| /* vi:set ts=8 sts=4 sw=4 noet: |
| * |
| * VIM - Vi IMproved by Bram Moolenaar |
| * |
| * Do ":help uganda" in Vim to read copying and usage conditions. |
| * Do ":help credits" in Vim to see a list of people who contributed. |
| * See README.txt for an overview of the Vim source code. |
| */ |
| |
| /* |
| * eval.c: Expression evaluation. |
| */ |
| #define USING_FLOAT_STUFF |
| |
| #include "vim.h" |
| |
| #if defined(FEAT_EVAL) || defined(PROTO) |
| |
| #ifdef VMS |
| # include <float.h> |
| #endif |
| |
| #define DICT_MAXNEST 100 /* maximum nesting of lists and dicts */ |
| |
| static char *e_letunexp = N_("E18: Unexpected characters in :let"); |
| static char *e_undefvar = N_("E121: Undefined variable: %s"); |
| static char *e_missbrac = N_("E111: Missing ']'"); |
| static char *e_dictrange = N_("E719: Cannot use [:] with a Dictionary"); |
| static char *e_letwrong = N_("E734: Wrong variable type for %s="); |
| static char *e_illvar = N_("E461: Illegal variable name: %s"); |
| #ifdef FEAT_FLOAT |
| static char *e_float_as_string = N_("E806: using Float as a String"); |
| #endif |
| |
| #define NAMESPACE_CHAR (char_u *)"abglstvw" |
| |
| static dictitem_T globvars_var; /* variable used for g: */ |
| #define globvarht globvardict.dv_hashtab |
| |
| /* |
| * Old Vim variables such as "v:version" are also available without the "v:". |
| * Also in functions. We need a special hashtable for them. |
| */ |
| static hashtab_T compat_hashtab; |
| |
| /* |
| * When recursively copying lists and dicts we need to remember which ones we |
| * have done to avoid endless recursiveness. This unique ID is used for that. |
| * The last bit is used for previous_funccal, ignored when comparing. |
| */ |
| static int current_copyID = 0; |
| |
| /* |
| * Array to hold the hashtab with variables local to each sourced script. |
| * Each item holds a variable (nameless) that points to the dict_T. |
| */ |
| typedef struct |
| { |
| dictitem_T sv_var; |
| dict_T sv_dict; |
| } scriptvar_T; |
| |
| static garray_T ga_scripts = {0, 0, sizeof(scriptvar_T *), 4, NULL}; |
| #define SCRIPT_SV(id) (((scriptvar_T **)ga_scripts.ga_data)[(id) - 1]) |
| #define SCRIPT_VARS(id) (SCRIPT_SV(id)->sv_dict.dv_hashtab) |
| |
| static int echo_attr = 0; /* attributes used for ":echo" */ |
| |
| /* The names of packages that once were loaded are remembered. */ |
| static garray_T ga_loaded = {0, 0, sizeof(char_u *), 4, NULL}; |
| |
| /* |
| * Info used by a ":for" loop. |
| */ |
| typedef struct |
| { |
| int fi_semicolon; /* TRUE if ending in '; var]' */ |
| int fi_varcount; /* nr of variables in the list */ |
| listwatch_T fi_lw; /* keep an eye on the item used. */ |
| list_T *fi_list; /* list being used */ |
| } forinfo_T; |
| |
| |
| /* |
| * Array to hold the value of v: variables. |
| * The value is in a dictitem, so that it can also be used in the v: scope. |
| * The reason to use this table anyway is for very quick access to the |
| * variables with the VV_ defines. |
| */ |
| |
| /* values for vv_flags: */ |
| #define VV_COMPAT 1 /* compatible, also used without "v:" */ |
| #define VV_RO 2 /* read-only */ |
| #define VV_RO_SBX 4 /* read-only in the sandbox */ |
| |
| #define VV_NAME(s, t) s, {{t, 0, {0}}, 0, {0}} |
| |
| static struct vimvar |
| { |
| char *vv_name; /* name of variable, without v: */ |
| dictitem16_T vv_di; /* value and name for key (max 16 chars!) */ |
| char vv_flags; /* VV_COMPAT, VV_RO, VV_RO_SBX */ |
| } vimvars[VV_LEN] = |
| { |
| /* |
| * The order here must match the VV_ defines in vim.h! |
| * Initializing a union does not work, leave tv.vval empty to get zero's. |
| */ |
| {VV_NAME("count", VAR_NUMBER), VV_COMPAT+VV_RO}, |
| {VV_NAME("count1", VAR_NUMBER), VV_RO}, |
| {VV_NAME("prevcount", VAR_NUMBER), VV_RO}, |
| {VV_NAME("errmsg", VAR_STRING), VV_COMPAT}, |
| {VV_NAME("warningmsg", VAR_STRING), 0}, |
| {VV_NAME("statusmsg", VAR_STRING), 0}, |
| {VV_NAME("shell_error", VAR_NUMBER), VV_COMPAT+VV_RO}, |
| {VV_NAME("this_session", VAR_STRING), VV_COMPAT}, |
| {VV_NAME("version", VAR_NUMBER), VV_COMPAT+VV_RO}, |
| {VV_NAME("lnum", VAR_NUMBER), VV_RO_SBX}, |
| {VV_NAME("termresponse", VAR_STRING), VV_RO}, |
| {VV_NAME("fname", VAR_STRING), VV_RO}, |
| {VV_NAME("lang", VAR_STRING), VV_RO}, |
| {VV_NAME("lc_time", VAR_STRING), VV_RO}, |
| {VV_NAME("ctype", VAR_STRING), VV_RO}, |
| {VV_NAME("charconvert_from", VAR_STRING), VV_RO}, |
| {VV_NAME("charconvert_to", VAR_STRING), VV_RO}, |
| {VV_NAME("fname_in", VAR_STRING), VV_RO}, |
| {VV_NAME("fname_out", VAR_STRING), VV_RO}, |
| {VV_NAME("fname_new", VAR_STRING), VV_RO}, |
| {VV_NAME("fname_diff", VAR_STRING), VV_RO}, |
| {VV_NAME("cmdarg", VAR_STRING), VV_RO}, |
| {VV_NAME("foldstart", VAR_NUMBER), VV_RO_SBX}, |
| {VV_NAME("foldend", VAR_NUMBER), VV_RO_SBX}, |
| {VV_NAME("folddashes", VAR_STRING), VV_RO_SBX}, |
| {VV_NAME("foldlevel", VAR_NUMBER), VV_RO_SBX}, |
| {VV_NAME("progname", VAR_STRING), VV_RO}, |
| {VV_NAME("servername", VAR_STRING), VV_RO}, |
| {VV_NAME("dying", VAR_NUMBER), VV_RO}, |
| {VV_NAME("exception", VAR_STRING), VV_RO}, |
| {VV_NAME("throwpoint", VAR_STRING), VV_RO}, |
| {VV_NAME("register", VAR_STRING), VV_RO}, |
| {VV_NAME("cmdbang", VAR_NUMBER), VV_RO}, |
| {VV_NAME("insertmode", VAR_STRING), VV_RO}, |
| {VV_NAME("val", VAR_UNKNOWN), VV_RO}, |
| {VV_NAME("key", VAR_UNKNOWN), VV_RO}, |
| {VV_NAME("profiling", VAR_NUMBER), VV_RO}, |
| {VV_NAME("fcs_reason", VAR_STRING), VV_RO}, |
| {VV_NAME("fcs_choice", VAR_STRING), 0}, |
| {VV_NAME("beval_bufnr", VAR_NUMBER), VV_RO}, |
| {VV_NAME("beval_winnr", VAR_NUMBER), VV_RO}, |
| {VV_NAME("beval_winid", VAR_NUMBER), VV_RO}, |
| {VV_NAME("beval_lnum", VAR_NUMBER), VV_RO}, |
| {VV_NAME("beval_col", VAR_NUMBER), VV_RO}, |
| {VV_NAME("beval_text", VAR_STRING), VV_RO}, |
| {VV_NAME("scrollstart", VAR_STRING), 0}, |
| {VV_NAME("swapname", VAR_STRING), VV_RO}, |
| {VV_NAME("swapchoice", VAR_STRING), 0}, |
| {VV_NAME("swapcommand", VAR_STRING), VV_RO}, |
| {VV_NAME("char", VAR_STRING), 0}, |
| {VV_NAME("mouse_win", VAR_NUMBER), 0}, |
| {VV_NAME("mouse_winid", VAR_NUMBER), 0}, |
| {VV_NAME("mouse_lnum", VAR_NUMBER), 0}, |
| {VV_NAME("mouse_col", VAR_NUMBER), 0}, |
| {VV_NAME("operator", VAR_STRING), VV_RO}, |
| {VV_NAME("searchforward", VAR_NUMBER), 0}, |
| {VV_NAME("hlsearch", VAR_NUMBER), 0}, |
| {VV_NAME("oldfiles", VAR_LIST), 0}, |
| {VV_NAME("windowid", VAR_NUMBER), VV_RO}, |
| {VV_NAME("progpath", VAR_STRING), VV_RO}, |
| {VV_NAME("completed_item", VAR_DICT), VV_RO}, |
| {VV_NAME("option_new", VAR_STRING), VV_RO}, |
| {VV_NAME("option_old", VAR_STRING), VV_RO}, |
| {VV_NAME("option_type", VAR_STRING), VV_RO}, |
| {VV_NAME("errors", VAR_LIST), 0}, |
| {VV_NAME("false", VAR_SPECIAL), VV_RO}, |
| {VV_NAME("true", VAR_SPECIAL), VV_RO}, |
| {VV_NAME("null", VAR_SPECIAL), VV_RO}, |
| {VV_NAME("none", VAR_SPECIAL), VV_RO}, |
| {VV_NAME("vim_did_enter", VAR_NUMBER), VV_RO}, |
| {VV_NAME("testing", VAR_NUMBER), 0}, |
| {VV_NAME("t_number", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_string", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_func", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_list", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_dict", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_float", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_bool", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_none", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_job", VAR_NUMBER), VV_RO}, |
| {VV_NAME("t_channel", VAR_NUMBER), VV_RO}, |
| }; |
| |
| /* shorthand */ |
| #define vv_type vv_di.di_tv.v_type |
| #define vv_nr vv_di.di_tv.vval.v_number |
| #define vv_float vv_di.di_tv.vval.v_float |
| #define vv_str vv_di.di_tv.vval.v_string |
| #define vv_list vv_di.di_tv.vval.v_list |
| #define vv_dict vv_di.di_tv.vval.v_dict |
| #define vv_tv vv_di.di_tv |
| |
| static dictitem_T vimvars_var; /* variable used for v: */ |
| #define vimvarht vimvardict.dv_hashtab |
| |
| static int ex_let_vars(char_u *arg, typval_T *tv, int copy, int semicolon, int var_count, char_u *nextchars); |
| static char_u *skip_var_list(char_u *arg, int *var_count, int *semicolon); |
| static char_u *skip_var_one(char_u *arg); |
| static void list_glob_vars(int *first); |
| static void list_buf_vars(int *first); |
| static void list_win_vars(int *first); |
| #ifdef FEAT_WINDOWS |
| static void list_tab_vars(int *first); |
| #endif |
| static void list_vim_vars(int *first); |
| static void list_script_vars(int *first); |
| static char_u *list_arg_vars(exarg_T *eap, char_u *arg, int *first); |
| static char_u *ex_let_one(char_u *arg, typval_T *tv, int copy, char_u *endchars, char_u *op); |
| static void set_var_lval(lval_T *lp, char_u *endp, typval_T *rettv, int copy, char_u *op); |
| static int tv_op(typval_T *tv1, typval_T *tv2, char_u *op); |
| static void ex_unletlock(exarg_T *eap, char_u *argstart, int deep); |
| static int do_unlet_var(lval_T *lp, char_u *name_end, int forceit); |
| static int do_lock_var(lval_T *lp, char_u *name_end, int deep, int lock); |
| static void item_lock(typval_T *tv, int deep, int lock); |
| |
| static int eval2(char_u **arg, typval_T *rettv, int evaluate); |
| static int eval3(char_u **arg, typval_T *rettv, int evaluate); |
| static int eval4(char_u **arg, typval_T *rettv, int evaluate); |
| static int eval5(char_u **arg, typval_T *rettv, int evaluate); |
| static int eval6(char_u **arg, typval_T *rettv, int evaluate, int want_string); |
| static int eval7(char_u **arg, typval_T *rettv, int evaluate, int want_string); |
| |
| static int eval_index(char_u **arg, typval_T *rettv, int evaluate, int verbose); |
| static int get_string_tv(char_u **arg, typval_T *rettv, int evaluate); |
| static int get_lit_string_tv(char_u **arg, typval_T *rettv, int evaluate); |
| static int free_unref_items(int copyID); |
| static int get_env_tv(char_u **arg, typval_T *rettv, int evaluate); |
| static int get_env_len(char_u **arg); |
| static char_u * make_expanded_name(char_u *in_start, char_u *expr_start, char_u *expr_end, char_u *in_end); |
| static void check_vars(char_u *name, int len); |
| static typval_T *alloc_string_tv(char_u *string); |
| static void delete_var(hashtab_T *ht, hashitem_T *hi); |
| static void list_one_var(dictitem_T *v, char_u *prefix, int *first); |
| static void list_one_var_a(char_u *prefix, char_u *name, int type, char_u *string, int *first); |
| static char_u *find_option_end(char_u **arg, int *opt_flags); |
| |
| #ifdef EBCDIC |
| static int compare_func_name(const void *s1, const void *s2); |
| static void sortFunctions(); |
| #endif |
| |
| /* for VIM_VERSION_ defines */ |
| #include "version.h" |
| |
| /* |
| * Initialize the global and v: variables. |
| */ |
| void |
| eval_init(void) |
| { |
| int i; |
| struct vimvar *p; |
| |
| init_var_dict(&globvardict, &globvars_var, VAR_DEF_SCOPE); |
| init_var_dict(&vimvardict, &vimvars_var, VAR_SCOPE); |
| vimvardict.dv_lock = VAR_FIXED; |
| hash_init(&compat_hashtab); |
| func_init(); |
| |
| for (i = 0; i < VV_LEN; ++i) |
| { |
| p = &vimvars[i]; |
| if (STRLEN(p->vv_name) > 16) |
| { |
| EMSG("INTERNAL: name too long, increase size of dictitem16_T"); |
| getout(1); |
| } |
| STRCPY(p->vv_di.di_key, p->vv_name); |
| if (p->vv_flags & VV_RO) |
| p->vv_di.di_flags = DI_FLAGS_RO | DI_FLAGS_FIX; |
| else if (p->vv_flags & VV_RO_SBX) |
| p->vv_di.di_flags = DI_FLAGS_RO_SBX | DI_FLAGS_FIX; |
| else |
| p->vv_di.di_flags = DI_FLAGS_FIX; |
| |
| /* add to v: scope dict, unless the value is not always available */ |
| if (p->vv_type != VAR_UNKNOWN) |
| hash_add(&vimvarht, p->vv_di.di_key); |
| if (p->vv_flags & VV_COMPAT) |
| /* add to compat scope dict */ |
| hash_add(&compat_hashtab, p->vv_di.di_key); |
| } |
| vimvars[VV_VERSION].vv_nr = VIM_VERSION_100; |
| |
| set_vim_var_nr(VV_SEARCHFORWARD, 1L); |
| set_vim_var_nr(VV_HLSEARCH, 1L); |
| set_vim_var_dict(VV_COMPLETED_ITEM, dict_alloc()); |
| set_vim_var_list(VV_ERRORS, list_alloc()); |
| |
| set_vim_var_nr(VV_FALSE, VVAL_FALSE); |
| set_vim_var_nr(VV_TRUE, VVAL_TRUE); |
| set_vim_var_nr(VV_NONE, VVAL_NONE); |
| set_vim_var_nr(VV_NULL, VVAL_NULL); |
| |
| set_vim_var_nr(VV_TYPE_NUMBER, VAR_TYPE_NUMBER); |
| set_vim_var_nr(VV_TYPE_STRING, VAR_TYPE_STRING); |
| set_vim_var_nr(VV_TYPE_FUNC, VAR_TYPE_FUNC); |
| set_vim_var_nr(VV_TYPE_LIST, VAR_TYPE_LIST); |
| set_vim_var_nr(VV_TYPE_DICT, VAR_TYPE_DICT); |
| set_vim_var_nr(VV_TYPE_FLOAT, VAR_TYPE_FLOAT); |
| set_vim_var_nr(VV_TYPE_BOOL, VAR_TYPE_BOOL); |
| set_vim_var_nr(VV_TYPE_NONE, VAR_TYPE_NONE); |
| set_vim_var_nr(VV_TYPE_JOB, VAR_TYPE_JOB); |
| set_vim_var_nr(VV_TYPE_CHANNEL, VAR_TYPE_CHANNEL); |
| |
| set_reg_var(0); /* default for v:register is not 0 but '"' */ |
| |
| #ifdef EBCDIC |
| /* |
| * Sort the function table, to enable binary search. |
| */ |
| sortFunctions(); |
| #endif |
| } |
| |
| #if defined(EXITFREE) || defined(PROTO) |
| void |
| eval_clear(void) |
| { |
| int i; |
| struct vimvar *p; |
| |
| for (i = 0; i < VV_LEN; ++i) |
| { |
| p = &vimvars[i]; |
| if (p->vv_di.di_tv.v_type == VAR_STRING) |
| { |
| vim_free(p->vv_str); |
| p->vv_str = NULL; |
| } |
| else if (p->vv_di.di_tv.v_type == VAR_LIST) |
| { |
| list_unref(p->vv_list); |
| p->vv_list = NULL; |
| } |
| } |
| hash_clear(&vimvarht); |
| hash_init(&vimvarht); /* garbage_collect() will access it */ |
| hash_clear(&compat_hashtab); |
| |
| free_scriptnames(); |
| # if defined(FEAT_CMDL_COMPL) |
| free_locales(); |
| # endif |
| |
| /* global variables */ |
| vars_clear(&globvarht); |
| |
| /* autoloaded script names */ |
| ga_clear_strings(&ga_loaded); |
| |
| /* Script-local variables. First clear all the variables and in a second |
| * loop free the scriptvar_T, because a variable in one script might hold |
| * a reference to the whole scope of another script. */ |
| for (i = 1; i <= ga_scripts.ga_len; ++i) |
| vars_clear(&SCRIPT_VARS(i)); |
| for (i = 1; i <= ga_scripts.ga_len; ++i) |
| vim_free(SCRIPT_SV(i)); |
| ga_clear(&ga_scripts); |
| |
| /* unreferenced lists and dicts */ |
| (void)garbage_collect(FALSE); |
| |
| /* functions */ |
| free_all_functions(); |
| } |
| #endif |
| |
| |
| /* |
| * Set an internal variable to a string value. Creates the variable if it does |
| * not already exist. |
| */ |
| void |
| set_internal_string_var(char_u *name, char_u *value) |
| { |
| char_u *val; |
| typval_T *tvp; |
| |
| val = vim_strsave(value); |
| if (val != NULL) |
| { |
| tvp = alloc_string_tv(val); |
| if (tvp != NULL) |
| { |
| set_var(name, tvp, FALSE); |
| free_tv(tvp); |
| } |
| } |
| } |
| |
| static lval_T *redir_lval = NULL; |
| #define EVALCMD_BUSY (redir_lval == (lval_T *)&redir_lval) |
| static garray_T redir_ga; /* only valid when redir_lval is not NULL */ |
| static char_u *redir_endp = NULL; |
| static char_u *redir_varname = NULL; |
| |
| /* |
| * Start recording command output to a variable |
| * When "append" is TRUE append to an existing variable. |
| * Returns OK if successfully completed the setup. FAIL otherwise. |
| */ |
| int |
| var_redir_start(char_u *name, int append) |
| { |
| int save_emsg; |
| int err; |
| typval_T tv; |
| |
| /* Catch a bad name early. */ |
| if (!eval_isnamec1(*name)) |
| { |
| EMSG(_(e_invarg)); |
| return FAIL; |
| } |
| |
| /* Make a copy of the name, it is used in redir_lval until redir ends. */ |
| redir_varname = vim_strsave(name); |
| if (redir_varname == NULL) |
| return FAIL; |
| |
| redir_lval = (lval_T *)alloc_clear((unsigned)sizeof(lval_T)); |
| if (redir_lval == NULL) |
| { |
| var_redir_stop(); |
| return FAIL; |
| } |
| |
| /* The output is stored in growarray "redir_ga" until redirection ends. */ |
| ga_init2(&redir_ga, (int)sizeof(char), 500); |
| |
| /* Parse the variable name (can be a dict or list entry). */ |
| redir_endp = get_lval(redir_varname, NULL, redir_lval, FALSE, FALSE, 0, |
| FNE_CHECK_START); |
| if (redir_endp == NULL || redir_lval->ll_name == NULL || *redir_endp != NUL) |
| { |
| clear_lval(redir_lval); |
| if (redir_endp != NULL && *redir_endp != NUL) |
| /* Trailing characters are present after the variable name */ |
| EMSG(_(e_trailing)); |
| else |
| EMSG(_(e_invarg)); |
| redir_endp = NULL; /* don't store a value, only cleanup */ |
| var_redir_stop(); |
| return FAIL; |
| } |
| |
| /* check if we can write to the variable: set it to or append an empty |
| * string */ |
| save_emsg = did_emsg; |
| did_emsg = FALSE; |
| tv.v_type = VAR_STRING; |
| tv.vval.v_string = (char_u *)""; |
| if (append) |
| set_var_lval(redir_lval, redir_endp, &tv, TRUE, (char_u *)"."); |
| else |
| set_var_lval(redir_lval, redir_endp, &tv, TRUE, (char_u *)"="); |
| clear_lval(redir_lval); |
| err = did_emsg; |
| did_emsg |= save_emsg; |
| if (err) |
| { |
| redir_endp = NULL; /* don't store a value, only cleanup */ |
| var_redir_stop(); |
| return FAIL; |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Append "value[value_len]" to the variable set by var_redir_start(). |
| * The actual appending is postponed until redirection ends, because the value |
| * appended may in fact be the string we write to, changing it may cause freed |
| * memory to be used: |
| * :redir => foo |
| * :let foo |
| * :redir END |
| */ |
| void |
| var_redir_str(char_u *value, int value_len) |
| { |
| int len; |
| |
| if (redir_lval == NULL) |
| return; |
| |
| if (value_len == -1) |
| len = (int)STRLEN(value); /* Append the entire string */ |
| else |
| len = value_len; /* Append only "value_len" characters */ |
| |
| if (ga_grow(&redir_ga, len) == OK) |
| { |
| mch_memmove((char *)redir_ga.ga_data + redir_ga.ga_len, value, len); |
| redir_ga.ga_len += len; |
| } |
| else |
| var_redir_stop(); |
| } |
| |
| /* |
| * Stop redirecting command output to a variable. |
| * Frees the allocated memory. |
| */ |
| void |
| var_redir_stop(void) |
| { |
| typval_T tv; |
| |
| if (EVALCMD_BUSY) |
| { |
| redir_lval = NULL; |
| return; |
| } |
| |
| if (redir_lval != NULL) |
| { |
| /* If there was no error: assign the text to the variable. */ |
| if (redir_endp != NULL) |
| { |
| ga_append(&redir_ga, NUL); /* Append the trailing NUL. */ |
| tv.v_type = VAR_STRING; |
| tv.vval.v_string = redir_ga.ga_data; |
| /* Call get_lval() again, if it's inside a Dict or List it may |
| * have changed. */ |
| redir_endp = get_lval(redir_varname, NULL, redir_lval, |
| FALSE, FALSE, 0, FNE_CHECK_START); |
| if (redir_endp != NULL && redir_lval->ll_name != NULL) |
| set_var_lval(redir_lval, redir_endp, &tv, FALSE, (char_u *)"."); |
| clear_lval(redir_lval); |
| } |
| |
| /* free the collected output */ |
| vim_free(redir_ga.ga_data); |
| redir_ga.ga_data = NULL; |
| |
| vim_free(redir_lval); |
| redir_lval = NULL; |
| } |
| vim_free(redir_varname); |
| redir_varname = NULL; |
| } |
| |
| # if defined(FEAT_MBYTE) || defined(PROTO) |
| int |
| eval_charconvert( |
| char_u *enc_from, |
| char_u *enc_to, |
| char_u *fname_from, |
| char_u *fname_to) |
| { |
| int err = FALSE; |
| |
| set_vim_var_string(VV_CC_FROM, enc_from, -1); |
| set_vim_var_string(VV_CC_TO, enc_to, -1); |
| set_vim_var_string(VV_FNAME_IN, fname_from, -1); |
| set_vim_var_string(VV_FNAME_OUT, fname_to, -1); |
| if (eval_to_bool(p_ccv, &err, NULL, FALSE)) |
| err = TRUE; |
| set_vim_var_string(VV_CC_FROM, NULL, -1); |
| set_vim_var_string(VV_CC_TO, NULL, -1); |
| set_vim_var_string(VV_FNAME_IN, NULL, -1); |
| set_vim_var_string(VV_FNAME_OUT, NULL, -1); |
| |
| if (err) |
| return FAIL; |
| return OK; |
| } |
| # endif |
| |
| # if defined(FEAT_POSTSCRIPT) || defined(PROTO) |
| int |
| eval_printexpr(char_u *fname, char_u *args) |
| { |
| int err = FALSE; |
| |
| set_vim_var_string(VV_FNAME_IN, fname, -1); |
| set_vim_var_string(VV_CMDARG, args, -1); |
| if (eval_to_bool(p_pexpr, &err, NULL, FALSE)) |
| err = TRUE; |
| set_vim_var_string(VV_FNAME_IN, NULL, -1); |
| set_vim_var_string(VV_CMDARG, NULL, -1); |
| |
| if (err) |
| { |
| mch_remove(fname); |
| return FAIL; |
| } |
| return OK; |
| } |
| # endif |
| |
| # if defined(FEAT_DIFF) || defined(PROTO) |
| void |
| eval_diff( |
| char_u *origfile, |
| char_u *newfile, |
| char_u *outfile) |
| { |
| int err = FALSE; |
| |
| set_vim_var_string(VV_FNAME_IN, origfile, -1); |
| set_vim_var_string(VV_FNAME_NEW, newfile, -1); |
| set_vim_var_string(VV_FNAME_OUT, outfile, -1); |
| (void)eval_to_bool(p_dex, &err, NULL, FALSE); |
| set_vim_var_string(VV_FNAME_IN, NULL, -1); |
| set_vim_var_string(VV_FNAME_NEW, NULL, -1); |
| set_vim_var_string(VV_FNAME_OUT, NULL, -1); |
| } |
| |
| void |
| eval_patch( |
| char_u *origfile, |
| char_u *difffile, |
| char_u *outfile) |
| { |
| int err; |
| |
| set_vim_var_string(VV_FNAME_IN, origfile, -1); |
| set_vim_var_string(VV_FNAME_DIFF, difffile, -1); |
| set_vim_var_string(VV_FNAME_OUT, outfile, -1); |
| (void)eval_to_bool(p_pex, &err, NULL, FALSE); |
| set_vim_var_string(VV_FNAME_IN, NULL, -1); |
| set_vim_var_string(VV_FNAME_DIFF, NULL, -1); |
| set_vim_var_string(VV_FNAME_OUT, NULL, -1); |
| } |
| # endif |
| |
| /* |
| * Top level evaluation function, returning a boolean. |
| * Sets "error" to TRUE if there was an error. |
| * Return TRUE or FALSE. |
| */ |
| int |
| eval_to_bool( |
| char_u *arg, |
| int *error, |
| char_u **nextcmd, |
| int skip) /* only parse, don't execute */ |
| { |
| typval_T tv; |
| varnumber_T retval = FALSE; |
| |
| if (skip) |
| ++emsg_skip; |
| if (eval0(arg, &tv, nextcmd, !skip) == FAIL) |
| *error = TRUE; |
| else |
| { |
| *error = FALSE; |
| if (!skip) |
| { |
| retval = (get_tv_number_chk(&tv, error) != 0); |
| clear_tv(&tv); |
| } |
| } |
| if (skip) |
| --emsg_skip; |
| |
| return (int)retval; |
| } |
| |
| /* |
| * Top level evaluation function, returning a string. If "skip" is TRUE, |
| * only parsing to "nextcmd" is done, without reporting errors. Return |
| * pointer to allocated memory, or NULL for failure or when "skip" is TRUE. |
| */ |
| char_u * |
| eval_to_string_skip( |
| char_u *arg, |
| char_u **nextcmd, |
| int skip) /* only parse, don't execute */ |
| { |
| typval_T tv; |
| char_u *retval; |
| |
| if (skip) |
| ++emsg_skip; |
| if (eval0(arg, &tv, nextcmd, !skip) == FAIL || skip) |
| retval = NULL; |
| else |
| { |
| retval = vim_strsave(get_tv_string(&tv)); |
| clear_tv(&tv); |
| } |
| if (skip) |
| --emsg_skip; |
| |
| return retval; |
| } |
| |
| /* |
| * Skip over an expression at "*pp". |
| * Return FAIL for an error, OK otherwise. |
| */ |
| int |
| skip_expr(char_u **pp) |
| { |
| typval_T rettv; |
| |
| *pp = skipwhite(*pp); |
| return eval1(pp, &rettv, FALSE); |
| } |
| |
| /* |
| * Top level evaluation function, returning a string. |
| * When "convert" is TRUE convert a List into a sequence of lines and convert |
| * a Float to a String. |
| * Return pointer to allocated memory, or NULL for failure. |
| */ |
| char_u * |
| eval_to_string( |
| char_u *arg, |
| char_u **nextcmd, |
| int convert) |
| { |
| typval_T tv; |
| char_u *retval; |
| garray_T ga; |
| #ifdef FEAT_FLOAT |
| char_u numbuf[NUMBUFLEN]; |
| #endif |
| |
| if (eval0(arg, &tv, nextcmd, TRUE) == FAIL) |
| retval = NULL; |
| else |
| { |
| if (convert && tv.v_type == VAR_LIST) |
| { |
| ga_init2(&ga, (int)sizeof(char), 80); |
| if (tv.vval.v_list != NULL) |
| { |
| list_join(&ga, tv.vval.v_list, (char_u *)"\n", TRUE, FALSE, 0); |
| if (tv.vval.v_list->lv_len > 0) |
| ga_append(&ga, NL); |
| } |
| ga_append(&ga, NUL); |
| retval = (char_u *)ga.ga_data; |
| } |
| #ifdef FEAT_FLOAT |
| else if (convert && tv.v_type == VAR_FLOAT) |
| { |
| vim_snprintf((char *)numbuf, NUMBUFLEN, "%g", tv.vval.v_float); |
| retval = vim_strsave(numbuf); |
| } |
| #endif |
| else |
| retval = vim_strsave(get_tv_string(&tv)); |
| clear_tv(&tv); |
| } |
| |
| return retval; |
| } |
| |
| /* |
| * Call eval_to_string() without using current local variables and using |
| * textlock. When "use_sandbox" is TRUE use the sandbox. |
| */ |
| char_u * |
| eval_to_string_safe( |
| char_u *arg, |
| char_u **nextcmd, |
| int use_sandbox) |
| { |
| char_u *retval; |
| void *save_funccalp; |
| |
| save_funccalp = save_funccal(); |
| if (use_sandbox) |
| ++sandbox; |
| ++textlock; |
| retval = eval_to_string(arg, nextcmd, FALSE); |
| if (use_sandbox) |
| --sandbox; |
| --textlock; |
| restore_funccal(save_funccalp); |
| return retval; |
| } |
| |
| /* |
| * Top level evaluation function, returning a number. |
| * Evaluates "expr" silently. |
| * Returns -1 for an error. |
| */ |
| varnumber_T |
| eval_to_number(char_u *expr) |
| { |
| typval_T rettv; |
| varnumber_T retval; |
| char_u *p = skipwhite(expr); |
| |
| ++emsg_off; |
| |
| if (eval1(&p, &rettv, TRUE) == FAIL) |
| retval = -1; |
| else |
| { |
| retval = get_tv_number_chk(&rettv, NULL); |
| clear_tv(&rettv); |
| } |
| --emsg_off; |
| |
| return retval; |
| } |
| |
| /* |
| * Prepare v: variable "idx" to be used. |
| * Save the current typeval in "save_tv". |
| * When not used yet add the variable to the v: hashtable. |
| */ |
| static void |
| prepare_vimvar(int idx, typval_T *save_tv) |
| { |
| *save_tv = vimvars[idx].vv_tv; |
| if (vimvars[idx].vv_type == VAR_UNKNOWN) |
| hash_add(&vimvarht, vimvars[idx].vv_di.di_key); |
| } |
| |
| /* |
| * Restore v: variable "idx" to typeval "save_tv". |
| * When no longer defined, remove the variable from the v: hashtable. |
| */ |
| static void |
| restore_vimvar(int idx, typval_T *save_tv) |
| { |
| hashitem_T *hi; |
| |
| vimvars[idx].vv_tv = *save_tv; |
| if (vimvars[idx].vv_type == VAR_UNKNOWN) |
| { |
| hi = hash_find(&vimvarht, vimvars[idx].vv_di.di_key); |
| if (HASHITEM_EMPTY(hi)) |
| EMSG2(_(e_intern2), "restore_vimvar()"); |
| else |
| hash_remove(&vimvarht, hi); |
| } |
| } |
| |
| #if defined(FEAT_SPELL) || defined(PROTO) |
| /* |
| * Evaluate an expression to a list with suggestions. |
| * For the "expr:" part of 'spellsuggest'. |
| * Returns NULL when there is an error. |
| */ |
| list_T * |
| eval_spell_expr(char_u *badword, char_u *expr) |
| { |
| typval_T save_val; |
| typval_T rettv; |
| list_T *list = NULL; |
| char_u *p = skipwhite(expr); |
| |
| /* Set "v:val" to the bad word. */ |
| prepare_vimvar(VV_VAL, &save_val); |
| vimvars[VV_VAL].vv_type = VAR_STRING; |
| vimvars[VV_VAL].vv_str = badword; |
| if (p_verbose == 0) |
| ++emsg_off; |
| |
| if (eval1(&p, &rettv, TRUE) == OK) |
| { |
| if (rettv.v_type != VAR_LIST) |
| clear_tv(&rettv); |
| else |
| list = rettv.vval.v_list; |
| } |
| |
| if (p_verbose == 0) |
| --emsg_off; |
| restore_vimvar(VV_VAL, &save_val); |
| |
| return list; |
| } |
| |
| /* |
| * "list" is supposed to contain two items: a word and a number. Return the |
| * word in "pp" and the number as the return value. |
| * Return -1 if anything isn't right. |
| * Used to get the good word and score from the eval_spell_expr() result. |
| */ |
| int |
| get_spellword(list_T *list, char_u **pp) |
| { |
| listitem_T *li; |
| |
| li = list->lv_first; |
| if (li == NULL) |
| return -1; |
| *pp = get_tv_string(&li->li_tv); |
| |
| li = li->li_next; |
| if (li == NULL) |
| return -1; |
| return (int)get_tv_number(&li->li_tv); |
| } |
| #endif |
| |
| /* |
| * Top level evaluation function. |
| * Returns an allocated typval_T with the result. |
| * Returns NULL when there is an error. |
| */ |
| typval_T * |
| eval_expr(char_u *arg, char_u **nextcmd) |
| { |
| typval_T *tv; |
| |
| tv = (typval_T *)alloc(sizeof(typval_T)); |
| if (tv != NULL && eval0(arg, tv, nextcmd, TRUE) == FAIL) |
| { |
| vim_free(tv); |
| tv = NULL; |
| } |
| |
| return tv; |
| } |
| |
| |
| /* |
| * Call some vimL function and return the result in "*rettv". |
| * Uses argv[argc] for the function arguments. Only Number and String |
| * arguments are currently supported. |
| * Returns OK or FAIL. |
| */ |
| int |
| call_vim_function( |
| char_u *func, |
| int argc, |
| char_u **argv, |
| int safe, /* use the sandbox */ |
| int str_arg_only, /* all arguments are strings */ |
| typval_T *rettv) |
| { |
| typval_T *argvars; |
| varnumber_T n; |
| int len; |
| int i; |
| int doesrange; |
| void *save_funccalp = NULL; |
| int ret; |
| |
| argvars = (typval_T *)alloc((unsigned)((argc + 1) * sizeof(typval_T))); |
| if (argvars == NULL) |
| return FAIL; |
| |
| for (i = 0; i < argc; i++) |
| { |
| /* Pass a NULL or empty argument as an empty string */ |
| if (argv[i] == NULL || *argv[i] == NUL) |
| { |
| argvars[i].v_type = VAR_STRING; |
| argvars[i].vval.v_string = (char_u *)""; |
| continue; |
| } |
| |
| if (str_arg_only) |
| len = 0; |
| else |
| /* Recognize a number argument, the others must be strings. */ |
| vim_str2nr(argv[i], NULL, &len, STR2NR_ALL, &n, NULL, 0); |
| if (len != 0 && len == (int)STRLEN(argv[i])) |
| { |
| argvars[i].v_type = VAR_NUMBER; |
| argvars[i].vval.v_number = n; |
| } |
| else |
| { |
| argvars[i].v_type = VAR_STRING; |
| argvars[i].vval.v_string = argv[i]; |
| } |
| } |
| |
| if (safe) |
| { |
| save_funccalp = save_funccal(); |
| ++sandbox; |
| } |
| |
| rettv->v_type = VAR_UNKNOWN; /* clear_tv() uses this */ |
| ret = call_func(func, (int)STRLEN(func), rettv, argc, argvars, NULL, |
| curwin->w_cursor.lnum, curwin->w_cursor.lnum, |
| &doesrange, TRUE, NULL, NULL); |
| if (safe) |
| { |
| --sandbox; |
| restore_funccal(save_funccalp); |
| } |
| vim_free(argvars); |
| |
| if (ret == FAIL) |
| clear_tv(rettv); |
| |
| return ret; |
| } |
| |
| /* |
| * Call vimL function "func" and return the result as a number. |
| * Returns -1 when calling the function fails. |
| * Uses argv[argc] for the function arguments. |
| */ |
| varnumber_T |
| call_func_retnr( |
| char_u *func, |
| int argc, |
| char_u **argv, |
| int safe) /* use the sandbox */ |
| { |
| typval_T rettv; |
| varnumber_T retval; |
| |
| /* All arguments are passed as strings, no conversion to number. */ |
| if (call_vim_function(func, argc, argv, safe, TRUE, &rettv) == FAIL) |
| return -1; |
| |
| retval = get_tv_number_chk(&rettv, NULL); |
| clear_tv(&rettv); |
| return retval; |
| } |
| |
| #if (defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)) \ |
| || defined(FEAT_COMPL_FUNC) || defined(PROTO) |
| |
| # if (defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)) || defined(PROTO) |
| /* |
| * Call vimL function "func" and return the result as a string. |
| * Returns NULL when calling the function fails. |
| * Uses argv[argc] for the function arguments. |
| */ |
| void * |
| call_func_retstr( |
| char_u *func, |
| int argc, |
| char_u **argv, |
| int safe) /* use the sandbox */ |
| { |
| typval_T rettv; |
| char_u *retval; |
| |
| /* All arguments are passed as strings, no conversion to number. */ |
| if (call_vim_function(func, argc, argv, safe, TRUE, &rettv) == FAIL) |
| return NULL; |
| |
| retval = vim_strsave(get_tv_string(&rettv)); |
| clear_tv(&rettv); |
| return retval; |
| } |
| # endif |
| |
| /* |
| * Call vimL function "func" and return the result as a List. |
| * Uses argv[argc] for the function arguments. |
| * Returns NULL when there is something wrong. |
| */ |
| void * |
| call_func_retlist( |
| char_u *func, |
| int argc, |
| char_u **argv, |
| int safe) /* use the sandbox */ |
| { |
| typval_T rettv; |
| |
| /* All arguments are passed as strings, no conversion to number. */ |
| if (call_vim_function(func, argc, argv, safe, TRUE, &rettv) == FAIL) |
| return NULL; |
| |
| if (rettv.v_type != VAR_LIST) |
| { |
| clear_tv(&rettv); |
| return NULL; |
| } |
| |
| return rettv.vval.v_list; |
| } |
| #endif |
| |
| |
| #ifdef FEAT_FOLDING |
| /* |
| * Evaluate 'foldexpr'. Returns the foldlevel, and any character preceding |
| * it in "*cp". Doesn't give error messages. |
| */ |
| int |
| eval_foldexpr(char_u *arg, int *cp) |
| { |
| typval_T tv; |
| varnumber_T retval; |
| char_u *s; |
| int use_sandbox = was_set_insecurely((char_u *)"foldexpr", |
| OPT_LOCAL); |
| |
| ++emsg_off; |
| if (use_sandbox) |
| ++sandbox; |
| ++textlock; |
| *cp = NUL; |
| if (eval0(arg, &tv, NULL, TRUE) == FAIL) |
| retval = 0; |
| else |
| { |
| /* If the result is a number, just return the number. */ |
| if (tv.v_type == VAR_NUMBER) |
| retval = tv.vval.v_number; |
| else if (tv.v_type != VAR_STRING || tv.vval.v_string == NULL) |
| retval = 0; |
| else |
| { |
| /* If the result is a string, check if there is a non-digit before |
| * the number. */ |
| s = tv.vval.v_string; |
| if (!VIM_ISDIGIT(*s) && *s != '-') |
| *cp = *s++; |
| retval = atol((char *)s); |
| } |
| clear_tv(&tv); |
| } |
| --emsg_off; |
| if (use_sandbox) |
| --sandbox; |
| --textlock; |
| |
| return (int)retval; |
| } |
| #endif |
| |
| /* |
| * ":let" list all variable values |
| * ":let var1 var2" list variable values |
| * ":let var = expr" assignment command. |
| * ":let var += expr" assignment command. |
| * ":let var -= expr" assignment command. |
| * ":let var .= expr" assignment command. |
| * ":let [var1, var2] = expr" unpack list. |
| */ |
| void |
| ex_let(exarg_T *eap) |
| { |
| char_u *arg = eap->arg; |
| char_u *expr = NULL; |
| typval_T rettv; |
| int i; |
| int var_count = 0; |
| int semicolon = 0; |
| char_u op[2]; |
| char_u *argend; |
| int first = TRUE; |
| |
| argend = skip_var_list(arg, &var_count, &semicolon); |
| if (argend == NULL) |
| return; |
| if (argend > arg && argend[-1] == '.') /* for var.='str' */ |
| --argend; |
| expr = skipwhite(argend); |
| if (*expr != '=' && !(vim_strchr((char_u *)"+-.", *expr) != NULL |
| && expr[1] == '=')) |
| { |
| /* |
| * ":let" without "=": list variables |
| */ |
| if (*arg == '[') |
| EMSG(_(e_invarg)); |
| else if (!ends_excmd(*arg)) |
| /* ":let var1 var2" */ |
| arg = list_arg_vars(eap, arg, &first); |
| else if (!eap->skip) |
| { |
| /* ":let" */ |
| list_glob_vars(&first); |
| list_buf_vars(&first); |
| list_win_vars(&first); |
| #ifdef FEAT_WINDOWS |
| list_tab_vars(&first); |
| #endif |
| list_script_vars(&first); |
| list_func_vars(&first); |
| list_vim_vars(&first); |
| } |
| eap->nextcmd = check_nextcmd(arg); |
| } |
| else |
| { |
| op[0] = '='; |
| op[1] = NUL; |
| if (*expr != '=') |
| { |
| if (vim_strchr((char_u *)"+-.", *expr) != NULL) |
| op[0] = *expr; /* +=, -= or .= */ |
| expr = skipwhite(expr + 2); |
| } |
| else |
| expr = skipwhite(expr + 1); |
| |
| if (eap->skip) |
| ++emsg_skip; |
| i = eval0(expr, &rettv, &eap->nextcmd, !eap->skip); |
| if (eap->skip) |
| { |
| if (i != FAIL) |
| clear_tv(&rettv); |
| --emsg_skip; |
| } |
| else if (i != FAIL) |
| { |
| (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count, |
| op); |
| clear_tv(&rettv); |
| } |
| } |
| } |
| |
| /* |
| * Assign the typevalue "tv" to the variable or variables at "arg_start". |
| * Handles both "var" with any type and "[var, var; var]" with a list type. |
| * When "nextchars" is not NULL it points to a string with characters that |
| * must appear after the variable(s). Use "+", "-" or "." for add, subtract |
| * or concatenate. |
| * Returns OK or FAIL; |
| */ |
| static int |
| ex_let_vars( |
| char_u *arg_start, |
| typval_T *tv, |
| int copy, /* copy values from "tv", don't move */ |
| int semicolon, /* from skip_var_list() */ |
| int var_count, /* from skip_var_list() */ |
| char_u *nextchars) |
| { |
| char_u *arg = arg_start; |
| list_T *l; |
| int i; |
| listitem_T *item; |
| typval_T ltv; |
| |
| if (*arg != '[') |
| { |
| /* |
| * ":let var = expr" or ":for var in list" |
| */ |
| if (ex_let_one(arg, tv, copy, nextchars, nextchars) == NULL) |
| return FAIL; |
| return OK; |
| } |
| |
| /* |
| * ":let [v1, v2] = list" or ":for [v1, v2] in listlist" |
| */ |
| if (tv->v_type != VAR_LIST || (l = tv->vval.v_list) == NULL) |
| { |
| EMSG(_(e_listreq)); |
| return FAIL; |
| } |
| |
| i = list_len(l); |
| if (semicolon == 0 && var_count < i) |
| { |
| EMSG(_("E687: Less targets than List items")); |
| return FAIL; |
| } |
| if (var_count - semicolon > i) |
| { |
| EMSG(_("E688: More targets than List items")); |
| return FAIL; |
| } |
| |
| item = l->lv_first; |
| while (*arg != ']') |
| { |
| arg = skipwhite(arg + 1); |
| arg = ex_let_one(arg, &item->li_tv, TRUE, (char_u *)",;]", nextchars); |
| item = item->li_next; |
| if (arg == NULL) |
| return FAIL; |
| |
| arg = skipwhite(arg); |
| if (*arg == ';') |
| { |
| /* Put the rest of the list (may be empty) in the var after ';'. |
| * Create a new list for this. */ |
| l = list_alloc(); |
| if (l == NULL) |
| return FAIL; |
| while (item != NULL) |
| { |
| list_append_tv(l, &item->li_tv); |
| item = item->li_next; |
| } |
| |
| ltv.v_type = VAR_LIST; |
| ltv.v_lock = 0; |
| ltv.vval.v_list = l; |
| l->lv_refcount = 1; |
| |
| arg = ex_let_one(skipwhite(arg + 1), <v, FALSE, |
| (char_u *)"]", nextchars); |
| clear_tv(<v); |
| if (arg == NULL) |
| return FAIL; |
| break; |
| } |
| else if (*arg != ',' && *arg != ']') |
| { |
| EMSG2(_(e_intern2), "ex_let_vars()"); |
| return FAIL; |
| } |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Skip over assignable variable "var" or list of variables "[var, var]". |
| * Used for ":let varvar = expr" and ":for varvar in expr". |
| * For "[var, var]" increment "*var_count" for each variable. |
| * for "[var, var; var]" set "semicolon". |
| * Return NULL for an error. |
| */ |
| static char_u * |
| skip_var_list( |
| char_u *arg, |
| int *var_count, |
| int *semicolon) |
| { |
| char_u *p, *s; |
| |
| if (*arg == '[') |
| { |
| /* "[var, var]": find the matching ']'. */ |
| p = arg; |
| for (;;) |
| { |
| p = skipwhite(p + 1); /* skip whites after '[', ';' or ',' */ |
| s = skip_var_one(p); |
| if (s == p) |
| { |
| EMSG2(_(e_invarg2), p); |
| return NULL; |
| } |
| ++*var_count; |
| |
| p = skipwhite(s); |
| if (*p == ']') |
| break; |
| else if (*p == ';') |
| { |
| if (*semicolon == 1) |
| { |
| EMSG(_("Double ; in list of variables")); |
| return NULL; |
| } |
| *semicolon = 1; |
| } |
| else if (*p != ',') |
| { |
| EMSG2(_(e_invarg2), p); |
| return NULL; |
| } |
| } |
| return p + 1; |
| } |
| else |
| return skip_var_one(arg); |
| } |
| |
| /* |
| * Skip one (assignable) variable name, including @r, $VAR, &option, d.key, |
| * l[idx]. |
| */ |
| static char_u * |
| skip_var_one(char_u *arg) |
| { |
| if (*arg == '@' && arg[1] != NUL) |
| return arg + 2; |
| return find_name_end(*arg == '$' || *arg == '&' ? arg + 1 : arg, |
| NULL, NULL, FNE_INCL_BR | FNE_CHECK_START); |
| } |
| |
| /* |
| * List variables for hashtab "ht" with prefix "prefix". |
| * If "empty" is TRUE also list NULL strings as empty strings. |
| */ |
| void |
| list_hashtable_vars( |
| hashtab_T *ht, |
| char_u *prefix, |
| int empty, |
| int *first) |
| { |
| hashitem_T *hi; |
| dictitem_T *di; |
| int todo; |
| |
| todo = (int)ht->ht_used; |
| for (hi = ht->ht_array; todo > 0 && !got_int; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| di = HI2DI(hi); |
| if (empty || di->di_tv.v_type != VAR_STRING |
| || di->di_tv.vval.v_string != NULL) |
| list_one_var(di, prefix, first); |
| } |
| } |
| } |
| |
| /* |
| * List global variables. |
| */ |
| static void |
| list_glob_vars(int *first) |
| { |
| list_hashtable_vars(&globvarht, (char_u *)"", TRUE, first); |
| } |
| |
| /* |
| * List buffer variables. |
| */ |
| static void |
| list_buf_vars(int *first) |
| { |
| char_u numbuf[NUMBUFLEN]; |
| |
| list_hashtable_vars(&curbuf->b_vars->dv_hashtab, (char_u *)"b:", |
| TRUE, first); |
| |
| sprintf((char *)numbuf, "%ld", (long)curbuf->b_changedtick); |
| list_one_var_a((char_u *)"b:", (char_u *)"changedtick", VAR_NUMBER, |
| numbuf, first); |
| } |
| |
| /* |
| * List window variables. |
| */ |
| static void |
| list_win_vars(int *first) |
| { |
| list_hashtable_vars(&curwin->w_vars->dv_hashtab, |
| (char_u *)"w:", TRUE, first); |
| } |
| |
| #ifdef FEAT_WINDOWS |
| /* |
| * List tab page variables. |
| */ |
| static void |
| list_tab_vars(int *first) |
| { |
| list_hashtable_vars(&curtab->tp_vars->dv_hashtab, |
| (char_u *)"t:", TRUE, first); |
| } |
| #endif |
| |
| /* |
| * List Vim variables. |
| */ |
| static void |
| list_vim_vars(int *first) |
| { |
| list_hashtable_vars(&vimvarht, (char_u *)"v:", FALSE, first); |
| } |
| |
| /* |
| * List script-local variables, if there is a script. |
| */ |
| static void |
| list_script_vars(int *first) |
| { |
| if (current_SID > 0 && current_SID <= ga_scripts.ga_len) |
| list_hashtable_vars(&SCRIPT_VARS(current_SID), |
| (char_u *)"s:", FALSE, first); |
| } |
| |
| /* |
| * List variables in "arg". |
| */ |
| static char_u * |
| list_arg_vars(exarg_T *eap, char_u *arg, int *first) |
| { |
| int error = FALSE; |
| int len; |
| char_u *name; |
| char_u *name_start; |
| char_u *arg_subsc; |
| char_u *tofree; |
| typval_T tv; |
| |
| while (!ends_excmd(*arg) && !got_int) |
| { |
| if (error || eap->skip) |
| { |
| arg = find_name_end(arg, NULL, NULL, FNE_INCL_BR | FNE_CHECK_START); |
| if (!vim_iswhite(*arg) && !ends_excmd(*arg)) |
| { |
| emsg_severe = TRUE; |
| EMSG(_(e_trailing)); |
| break; |
| } |
| } |
| else |
| { |
| /* get_name_len() takes care of expanding curly braces */ |
| name_start = name = arg; |
| len = get_name_len(&arg, &tofree, TRUE, TRUE); |
| if (len <= 0) |
| { |
| /* This is mainly to keep test 49 working: when expanding |
| * curly braces fails overrule the exception error message. */ |
| if (len < 0 && !aborting()) |
| { |
| emsg_severe = TRUE; |
| EMSG2(_(e_invarg2), arg); |
| break; |
| } |
| error = TRUE; |
| } |
| else |
| { |
| if (tofree != NULL) |
| name = tofree; |
| if (get_var_tv(name, len, &tv, NULL, TRUE, FALSE) == FAIL) |
| error = TRUE; |
| else |
| { |
| /* handle d.key, l[idx], f(expr) */ |
| arg_subsc = arg; |
| if (handle_subscript(&arg, &tv, TRUE, TRUE) == FAIL) |
| error = TRUE; |
| else |
| { |
| if (arg == arg_subsc && len == 2 && name[1] == ':') |
| { |
| switch (*name) |
| { |
| case 'g': list_glob_vars(first); break; |
| case 'b': list_buf_vars(first); break; |
| case 'w': list_win_vars(first); break; |
| #ifdef FEAT_WINDOWS |
| case 't': list_tab_vars(first); break; |
| #endif |
| case 'v': list_vim_vars(first); break; |
| case 's': list_script_vars(first); break; |
| case 'l': list_func_vars(first); break; |
| default: |
| EMSG2(_("E738: Can't list variables for %s"), name); |
| } |
| } |
| else |
| { |
| char_u numbuf[NUMBUFLEN]; |
| char_u *tf; |
| int c; |
| char_u *s; |
| |
| s = echo_string(&tv, &tf, numbuf, 0); |
| c = *arg; |
| *arg = NUL; |
| list_one_var_a((char_u *)"", |
| arg == arg_subsc ? name : name_start, |
| tv.v_type, |
| s == NULL ? (char_u *)"" : s, |
| first); |
| *arg = c; |
| vim_free(tf); |
| } |
| clear_tv(&tv); |
| } |
| } |
| } |
| |
| vim_free(tofree); |
| } |
| |
| arg = skipwhite(arg); |
| } |
| |
| return arg; |
| } |
| |
| /* |
| * Set one item of ":let var = expr" or ":let [v1, v2] = list" to its value. |
| * Returns a pointer to the char just after the var name. |
| * Returns NULL if there is an error. |
| */ |
| static char_u * |
| ex_let_one( |
| char_u *arg, /* points to variable name */ |
| typval_T *tv, /* value to assign to variable */ |
| int copy, /* copy value from "tv" */ |
| char_u *endchars, /* valid chars after variable name or NULL */ |
| char_u *op) /* "+", "-", "." or NULL*/ |
| { |
| int c1; |
| char_u *name; |
| char_u *p; |
| char_u *arg_end = NULL; |
| int len; |
| int opt_flags; |
| char_u *tofree = NULL; |
| |
| /* |
| * ":let $VAR = expr": Set environment variable. |
| */ |
| if (*arg == '$') |
| { |
| /* Find the end of the name. */ |
| ++arg; |
| name = arg; |
| len = get_env_len(&arg); |
| if (len == 0) |
| EMSG2(_(e_invarg2), name - 1); |
| else |
| { |
| if (op != NULL && (*op == '+' || *op == '-')) |
| EMSG2(_(e_letwrong), op); |
| else if (endchars != NULL |
| && vim_strchr(endchars, *skipwhite(arg)) == NULL) |
| EMSG(_(e_letunexp)); |
| else if (!check_secure()) |
| { |
| c1 = name[len]; |
| name[len] = NUL; |
| p = get_tv_string_chk(tv); |
| if (p != NULL && op != NULL && *op == '.') |
| { |
| int mustfree = FALSE; |
| char_u *s = vim_getenv(name, &mustfree); |
| |
| if (s != NULL) |
| { |
| p = tofree = concat_str(s, p); |
| if (mustfree) |
| vim_free(s); |
| } |
| } |
| if (p != NULL) |
| { |
| vim_setenv(name, p); |
| if (STRICMP(name, "HOME") == 0) |
| init_homedir(); |
| else if (didset_vim && STRICMP(name, "VIM") == 0) |
| didset_vim = FALSE; |
| else if (didset_vimruntime |
| && STRICMP(name, "VIMRUNTIME") == 0) |
| didset_vimruntime = FALSE; |
| arg_end = arg; |
| } |
| name[len] = c1; |
| vim_free(tofree); |
| } |
| } |
| } |
| |
| /* |
| * ":let &option = expr": Set option value. |
| * ":let &l:option = expr": Set local option value. |
| * ":let &g:option = expr": Set global option value. |
| */ |
| else if (*arg == '&') |
| { |
| /* Find the end of the name. */ |
| p = find_option_end(&arg, &opt_flags); |
| if (p == NULL || (endchars != NULL |
| && vim_strchr(endchars, *skipwhite(p)) == NULL)) |
| EMSG(_(e_letunexp)); |
| else |
| { |
| long n; |
| int opt_type; |
| long numval; |
| char_u *stringval = NULL; |
| char_u *s; |
| |
| c1 = *p; |
| *p = NUL; |
| |
| n = (long)get_tv_number(tv); |
| s = get_tv_string_chk(tv); /* != NULL if number or string */ |
| if (s != NULL && op != NULL && *op != '=') |
| { |
| opt_type = get_option_value(arg, &numval, |
| &stringval, opt_flags); |
| if ((opt_type == 1 && *op == '.') |
| || (opt_type == 0 && *op != '.')) |
| EMSG2(_(e_letwrong), op); |
| else |
| { |
| if (opt_type == 1) /* number */ |
| { |
| if (*op == '+') |
| n = numval + n; |
| else |
| n = numval - n; |
| } |
| else if (opt_type == 0 && stringval != NULL) /* string */ |
| { |
| s = concat_str(stringval, s); |
| vim_free(stringval); |
| stringval = s; |
| } |
| } |
| } |
| if (s != NULL) |
| { |
| set_option_value(arg, n, s, opt_flags); |
| arg_end = p; |
| } |
| *p = c1; |
| vim_free(stringval); |
| } |
| } |
| |
| /* |
| * ":let @r = expr": Set register contents. |
| */ |
| else if (*arg == '@') |
| { |
| ++arg; |
| if (op != NULL && (*op == '+' || *op == '-')) |
| EMSG2(_(e_letwrong), op); |
| else if (endchars != NULL |
| && vim_strchr(endchars, *skipwhite(arg + 1)) == NULL) |
| EMSG(_(e_letunexp)); |
| else |
| { |
| char_u *ptofree = NULL; |
| char_u *s; |
| |
| p = get_tv_string_chk(tv); |
| if (p != NULL && op != NULL && *op == '.') |
| { |
| s = get_reg_contents(*arg == '@' ? '"' : *arg, GREG_EXPR_SRC); |
| if (s != NULL) |
| { |
| p = ptofree = concat_str(s, p); |
| vim_free(s); |
| } |
| } |
| if (p != NULL) |
| { |
| write_reg_contents(*arg == '@' ? '"' : *arg, p, -1, FALSE); |
| arg_end = arg + 1; |
| } |
| vim_free(ptofree); |
| } |
| } |
| |
| /* |
| * ":let var = expr": Set internal variable. |
| * ":let {expr} = expr": Idem, name made with curly braces |
| */ |
| else if (eval_isnamec1(*arg) || *arg == '{') |
| { |
| lval_T lv; |
| |
| p = get_lval(arg, tv, &lv, FALSE, FALSE, 0, FNE_CHECK_START); |
| if (p != NULL && lv.ll_name != NULL) |
| { |
| if (endchars != NULL && vim_strchr(endchars, *skipwhite(p)) == NULL) |
| EMSG(_(e_letunexp)); |
| else |
| { |
| set_var_lval(&lv, p, tv, copy, op); |
| arg_end = p; |
| } |
| } |
| clear_lval(&lv); |
| } |
| |
| else |
| EMSG2(_(e_invarg2), arg); |
| |
| return arg_end; |
| } |
| |
| /* |
| * If "arg" is equal to "b:changedtick" give an error and return TRUE. |
| */ |
| int |
| check_changedtick(char_u *arg) |
| { |
| if (STRNCMP(arg, "b:changedtick", 13) == 0 && !eval_isnamec(arg[13])) |
| { |
| EMSG2(_(e_readonlyvar), arg); |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Get an lval: variable, Dict item or List item that can be assigned a value |
| * to: "name", "na{me}", "name[expr]", "name[expr:expr]", "name[expr][expr]", |
| * "name.key", "name.key[expr]" etc. |
| * Indexing only works if "name" is an existing List or Dictionary. |
| * "name" points to the start of the name. |
| * If "rettv" is not NULL it points to the value to be assigned. |
| * "unlet" is TRUE for ":unlet": slightly different behavior when something is |
| * wrong; must end in space or cmd separator. |
| * |
| * flags: |
| * GLV_QUIET: do not give error messages |
| * GLV_NO_AUTOLOAD: do not use script autoloading |
| * |
| * Returns a pointer to just after the name, including indexes. |
| * When an evaluation error occurs "lp->ll_name" is NULL; |
| * Returns NULL for a parsing error. Still need to free items in "lp"! |
| */ |
| char_u * |
| get_lval( |
| char_u *name, |
| typval_T *rettv, |
| lval_T *lp, |
| int unlet, |
| int skip, |
| int flags, /* GLV_ values */ |
| int fne_flags) /* flags for find_name_end() */ |
| { |
| char_u *p; |
| char_u *expr_start, *expr_end; |
| int cc; |
| dictitem_T *v; |
| typval_T var1; |
| typval_T var2; |
| int empty1 = FALSE; |
| listitem_T *ni; |
| char_u *key = NULL; |
| int len; |
| hashtab_T *ht; |
| int quiet = flags & GLV_QUIET; |
| |
| /* Clear everything in "lp". */ |
| vim_memset(lp, 0, sizeof(lval_T)); |
| |
| if (skip) |
| { |
| /* When skipping just find the end of the name. */ |
| lp->ll_name = name; |
| return find_name_end(name, NULL, NULL, FNE_INCL_BR | fne_flags); |
| } |
| |
| /* Find the end of the name. */ |
| p = find_name_end(name, &expr_start, &expr_end, fne_flags); |
| if (expr_start != NULL) |
| { |
| /* Don't expand the name when we already know there is an error. */ |
| if (unlet && !vim_iswhite(*p) && !ends_excmd(*p) |
| && *p != '[' && *p != '.') |
| { |
| EMSG(_(e_trailing)); |
| return NULL; |
| } |
| |
| lp->ll_exp_name = make_expanded_name(name, expr_start, expr_end, p); |
| if (lp->ll_exp_name == NULL) |
| { |
| /* Report an invalid expression in braces, unless the |
| * expression evaluation has been cancelled due to an |
| * aborting error, an interrupt, or an exception. */ |
| if (!aborting() && !quiet) |
| { |
| emsg_severe = TRUE; |
| EMSG2(_(e_invarg2), name); |
| return NULL; |
| } |
| } |
| lp->ll_name = lp->ll_exp_name; |
| } |
| else |
| lp->ll_name = name; |
| |
| /* Without [idx] or .key we are done. */ |
| if ((*p != '[' && *p != '.') || lp->ll_name == NULL) |
| return p; |
| |
| cc = *p; |
| *p = NUL; |
| v = find_var(lp->ll_name, &ht, flags & GLV_NO_AUTOLOAD); |
| if (v == NULL && !quiet) |
| EMSG2(_(e_undefvar), lp->ll_name); |
| *p = cc; |
| if (v == NULL) |
| return NULL; |
| |
| /* |
| * Loop until no more [idx] or .key is following. |
| */ |
| lp->ll_tv = &v->di_tv; |
| while (*p == '[' || (*p == '.' && lp->ll_tv->v_type == VAR_DICT)) |
| { |
| if (!(lp->ll_tv->v_type == VAR_LIST && lp->ll_tv->vval.v_list != NULL) |
| && !(lp->ll_tv->v_type == VAR_DICT |
| && lp->ll_tv->vval.v_dict != NULL)) |
| { |
| if (!quiet) |
| EMSG(_("E689: Can only index a List or Dictionary")); |
| return NULL; |
| } |
| if (lp->ll_range) |
| { |
| if (!quiet) |
| EMSG(_("E708: [:] must come last")); |
| return NULL; |
| } |
| |
| len = -1; |
| if (*p == '.') |
| { |
| key = p + 1; |
| for (len = 0; ASCII_ISALNUM(key[len]) || key[len] == '_'; ++len) |
| ; |
| if (len == 0) |
| { |
| if (!quiet) |
| EMSG(_(e_emptykey)); |
| return NULL; |
| } |
| p = key + len; |
| } |
| else |
| { |
| /* Get the index [expr] or the first index [expr: ]. */ |
| p = skipwhite(p + 1); |
| if (*p == ':') |
| empty1 = TRUE; |
| else |
| { |
| empty1 = FALSE; |
| if (eval1(&p, &var1, TRUE) == FAIL) /* recursive! */ |
| return NULL; |
| if (get_tv_string_chk(&var1) == NULL) |
| { |
| /* not a number or string */ |
| clear_tv(&var1); |
| return NULL; |
| } |
| } |
| |
| /* Optionally get the second index [ :expr]. */ |
| if (*p == ':') |
| { |
| if (lp->ll_tv->v_type == VAR_DICT) |
| { |
| if (!quiet) |
| EMSG(_(e_dictrange)); |
| if (!empty1) |
| clear_tv(&var1); |
| return NULL; |
| } |
| if (rettv != NULL && (rettv->v_type != VAR_LIST |
| || rettv->vval.v_list == NULL)) |
| { |
| if (!quiet) |
| EMSG(_("E709: [:] requires a List value")); |
| if (!empty1) |
| clear_tv(&var1); |
| return NULL; |
| } |
| p = skipwhite(p + 1); |
| if (*p == ']') |
| lp->ll_empty2 = TRUE; |
| else |
| { |
| lp->ll_empty2 = FALSE; |
| if (eval1(&p, &var2, TRUE) == FAIL) /* recursive! */ |
| { |
| if (!empty1) |
| clear_tv(&var1); |
| return NULL; |
| } |
| if (get_tv_string_chk(&var2) == NULL) |
| { |
| /* not a number or string */ |
| if (!empty1) |
| clear_tv(&var1); |
| clear_tv(&var2); |
| return NULL; |
| } |
| } |
| lp->ll_range = TRUE; |
| } |
| else |
| lp->ll_range = FALSE; |
| |
| if (*p != ']') |
| { |
| if (!quiet) |
| EMSG(_(e_missbrac)); |
| if (!empty1) |
| clear_tv(&var1); |
| if (lp->ll_range && !lp->ll_empty2) |
| clear_tv(&var2); |
| return NULL; |
| } |
| |
| /* Skip to past ']'. */ |
| ++p; |
| } |
| |
| if (lp->ll_tv->v_type == VAR_DICT) |
| { |
| if (len == -1) |
| { |
| /* "[key]": get key from "var1" */ |
| key = get_tv_string_chk(&var1); /* is number or string */ |
| if (key == NULL) |
| { |
| clear_tv(&var1); |
| return NULL; |
| } |
| } |
| lp->ll_list = NULL; |
| lp->ll_dict = lp->ll_tv->vval.v_dict; |
| lp->ll_di = dict_find(lp->ll_dict, key, len); |
| |
| /* When assigning to a scope dictionary check that a function and |
| * variable name is valid (only variable name unless it is l: or |
| * g: dictionary). Disallow overwriting a builtin function. */ |
| if (rettv != NULL && lp->ll_dict->dv_scope != 0) |
| { |
| int prevval; |
| int wrong; |
| |
| if (len != -1) |
| { |
| prevval = key[len]; |
| key[len] = NUL; |
| } |
| else |
| prevval = 0; /* avoid compiler warning */ |
| wrong = (lp->ll_dict->dv_scope == VAR_DEF_SCOPE |
| && rettv->v_type == VAR_FUNC |
| && var_check_func_name(key, lp->ll_di == NULL)) |
| || !valid_varname(key); |
| if (len != -1) |
| key[len] = prevval; |
| if (wrong) |
| return NULL; |
| } |
| |
| if (lp->ll_di == NULL) |
| { |
| /* Can't add "v:" variable. */ |
| if (lp->ll_dict == &vimvardict) |
| { |
| EMSG2(_(e_illvar), name); |
| return NULL; |
| } |
| |
| /* Key does not exist in dict: may need to add it. */ |
| if (*p == '[' || *p == '.' || unlet) |
| { |
| if (!quiet) |
| EMSG2(_(e_dictkey), key); |
| if (len == -1) |
| clear_tv(&var1); |
| return NULL; |
| } |
| if (len == -1) |
| lp->ll_newkey = vim_strsave(key); |
| else |
| lp->ll_newkey = vim_strnsave(key, len); |
| if (len == -1) |
| clear_tv(&var1); |
| if (lp->ll_newkey == NULL) |
| p = NULL; |
| break; |
| } |
| /* existing variable, need to check if it can be changed */ |
| else if (var_check_ro(lp->ll_di->di_flags, name, FALSE)) |
| return NULL; |
| |
| if (len == -1) |
| clear_tv(&var1); |
| lp->ll_tv = &lp->ll_di->di_tv; |
| } |
| else |
| { |
| /* |
| * Get the number and item for the only or first index of the List. |
| */ |
| if (empty1) |
| lp->ll_n1 = 0; |
| else |
| { |
| lp->ll_n1 = (long)get_tv_number(&var1); |
| /* is number or string */ |
| clear_tv(&var1); |
| } |
| lp->ll_dict = NULL; |
| lp->ll_list = lp->ll_tv->vval.v_list; |
| lp->ll_li = list_find(lp->ll_list, lp->ll_n1); |
| if (lp->ll_li == NULL) |
| { |
| if (lp->ll_n1 < 0) |
| { |
| lp->ll_n1 = 0; |
| lp->ll_li = list_find(lp->ll_list, lp->ll_n1); |
| } |
| } |
| if (lp->ll_li == NULL) |
| { |
| if (lp->ll_range && !lp->ll_empty2) |
| clear_tv(&var2); |
| if (!quiet) |
| EMSGN(_(e_listidx), lp->ll_n1); |
| return NULL; |
| } |
| |
| /* |
| * May need to find the item or absolute index for the second |
| * index of a range. |
| * When no index given: "lp->ll_empty2" is TRUE. |
| * Otherwise "lp->ll_n2" is set to the second index. |
| */ |
| if (lp->ll_range && !lp->ll_empty2) |
| { |
| lp->ll_n2 = (long)get_tv_number(&var2); |
| /* is number or string */ |
| clear_tv(&var2); |
| if (lp->ll_n2 < 0) |
| { |
| ni = list_find(lp->ll_list, lp->ll_n2); |
| if (ni == NULL) |
| { |
| if (!quiet) |
| EMSGN(_(e_listidx), lp->ll_n2); |
| return NULL; |
| } |
| lp->ll_n2 = list_idx_of_item(lp->ll_list, ni); |
| } |
| |
| /* Check that lp->ll_n2 isn't before lp->ll_n1. */ |
| if (lp->ll_n1 < 0) |
| lp->ll_n1 = list_idx_of_item(lp->ll_list, lp->ll_li); |
| if (lp->ll_n2 < lp->ll_n1) |
| { |
| if (!quiet) |
| EMSGN(_(e_listidx), lp->ll_n2); |
| return NULL; |
| } |
| } |
| |
| lp->ll_tv = &lp->ll_li->li_tv; |
| } |
| } |
| |
| return p; |
| } |
| |
| /* |
| * Clear lval "lp" that was filled by get_lval(). |
| */ |
| void |
| clear_lval(lval_T *lp) |
| { |
| vim_free(lp->ll_exp_name); |
| vim_free(lp->ll_newkey); |
| } |
| |
| /* |
| * Set a variable that was parsed by get_lval() to "rettv". |
| * "endp" points to just after the parsed name. |
| * "op" is NULL, "+" for "+=", "-" for "-=", "." for ".=" or "=" for "=". |
| */ |
| static void |
| set_var_lval( |
| lval_T *lp, |
| char_u *endp, |
| typval_T *rettv, |
| int copy, |
| char_u *op) |
| { |
| int cc; |
| listitem_T *ri; |
| dictitem_T *di; |
| |
| if (lp->ll_tv == NULL) |
| { |
| if (!check_changedtick(lp->ll_name)) |
| { |
| cc = *endp; |
| *endp = NUL; |
| if (op != NULL && *op != '=') |
| { |
| typval_T tv; |
| |
| /* handle +=, -= and .= */ |
| di = NULL; |
| if (get_var_tv(lp->ll_name, (int)STRLEN(lp->ll_name), |
| &tv, &di, TRUE, FALSE) == OK) |
| { |
| if ((di == NULL |
| || (!var_check_ro(di->di_flags, lp->ll_name, FALSE) |
| && !tv_check_lock(di->di_tv.v_lock, lp->ll_name, |
| FALSE))) |
| && tv_op(&tv, rettv, op) == OK) |
| set_var(lp->ll_name, &tv, FALSE); |
| clear_tv(&tv); |
| } |
| } |
| else |
| set_var(lp->ll_name, rettv, copy); |
| *endp = cc; |
| } |
| } |
| else if (tv_check_lock(lp->ll_newkey == NULL |
| ? lp->ll_tv->v_lock |
| : lp->ll_tv->vval.v_dict->dv_lock, lp->ll_name, FALSE)) |
| ; |
| else if (lp->ll_range) |
| { |
| listitem_T *ll_li = lp->ll_li; |
| int ll_n1 = lp->ll_n1; |
| |
| /* |
| * Check whether any of the list items is locked |
| */ |
| for (ri = rettv->vval.v_list->lv_first; ri != NULL && ll_li != NULL; ) |
| { |
| if (tv_check_lock(ll_li->li_tv.v_lock, lp->ll_name, FALSE)) |
| return; |
| ri = ri->li_next; |
| if (ri == NULL || (!lp->ll_empty2 && lp->ll_n2 == ll_n1)) |
| break; |
| ll_li = ll_li->li_next; |
| ++ll_n1; |
| } |
| |
| /* |
| * Assign the List values to the list items. |
| */ |
| for (ri = rettv->vval.v_list->lv_first; ri != NULL; ) |
| { |
| if (op != NULL && *op != '=') |
| tv_op(&lp->ll_li->li_tv, &ri->li_tv, op); |
| else |
| { |
| clear_tv(&lp->ll_li->li_tv); |
| copy_tv(&ri->li_tv, &lp->ll_li->li_tv); |
| } |
| ri = ri->li_next; |
| if (ri == NULL || (!lp->ll_empty2 && lp->ll_n2 == lp->ll_n1)) |
| break; |
| if (lp->ll_li->li_next == NULL) |
| { |
| /* Need to add an empty item. */ |
| if (list_append_number(lp->ll_list, 0) == FAIL) |
| { |
| ri = NULL; |
| break; |
| } |
| } |
| lp->ll_li = lp->ll_li->li_next; |
| ++lp->ll_n1; |
| } |
| if (ri != NULL) |
| EMSG(_("E710: List value has more items than target")); |
| else if (lp->ll_empty2 |
| ? (lp->ll_li != NULL && lp->ll_li->li_next != NULL) |
| : lp->ll_n1 != lp->ll_n2) |
| EMSG(_("E711: List value has not enough items")); |
| } |
| else |
| { |
| /* |
| * Assign to a List or Dictionary item. |
| */ |
| if (lp->ll_newkey != NULL) |
| { |
| if (op != NULL && *op != '=') |
| { |
| EMSG2(_(e_letwrong), op); |
| return; |
| } |
| |
| /* Need to add an item to the Dictionary. */ |
| di = dictitem_alloc(lp->ll_newkey); |
| if (di == NULL) |
| return; |
| if (dict_add(lp->ll_tv->vval.v_dict, di) == FAIL) |
| { |
| vim_free(di); |
| return; |
| } |
| lp->ll_tv = &di->di_tv; |
| } |
| else if (op != NULL && *op != '=') |
| { |
| tv_op(lp->ll_tv, rettv, op); |
| return; |
| } |
| else |
| clear_tv(lp->ll_tv); |
| |
| /* |
| * Assign the value to the variable or list item. |
| */ |
| if (copy) |
| copy_tv(rettv, lp->ll_tv); |
| else |
| { |
| *lp->ll_tv = *rettv; |
| lp->ll_tv->v_lock = 0; |
| init_tv(rettv); |
| } |
| } |
| } |
| |
| /* |
| * Handle "tv1 += tv2", "tv1 -= tv2" and "tv1 .= tv2" |
| * Returns OK or FAIL. |
| */ |
| static int |
| tv_op(typval_T *tv1, typval_T *tv2, char_u *op) |
| { |
| varnumber_T n; |
| char_u numbuf[NUMBUFLEN]; |
| char_u *s; |
| |
| /* Can't do anything with a Funcref, Dict, v:true on the right. */ |
| if (tv2->v_type != VAR_FUNC && tv2->v_type != VAR_DICT |
| && tv2->v_type != VAR_SPECIAL) |
| { |
| switch (tv1->v_type) |
| { |
| case VAR_UNKNOWN: |
| case VAR_DICT: |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| case VAR_SPECIAL: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| break; |
| |
| case VAR_LIST: |
| if (*op != '+' || tv2->v_type != VAR_LIST) |
| break; |
| /* List += List */ |
| if (tv1->vval.v_list != NULL && tv2->vval.v_list != NULL) |
| list_extend(tv1->vval.v_list, tv2->vval.v_list, NULL); |
| return OK; |
| |
| case VAR_NUMBER: |
| case VAR_STRING: |
| if (tv2->v_type == VAR_LIST) |
| break; |
| if (*op == '+' || *op == '-') |
| { |
| /* nr += nr or nr -= nr*/ |
| n = get_tv_number(tv1); |
| #ifdef FEAT_FLOAT |
| if (tv2->v_type == VAR_FLOAT) |
| { |
| float_T f = n; |
| |
| if (*op == '+') |
| f += tv2->vval.v_float; |
| else |
| f -= tv2->vval.v_float; |
| clear_tv(tv1); |
| tv1->v_type = VAR_FLOAT; |
| tv1->vval.v_float = f; |
| } |
| else |
| #endif |
| { |
| if (*op == '+') |
| n += get_tv_number(tv2); |
| else |
| n -= get_tv_number(tv2); |
| clear_tv(tv1); |
| tv1->v_type = VAR_NUMBER; |
| tv1->vval.v_number = n; |
| } |
| } |
| else |
| { |
| if (tv2->v_type == VAR_FLOAT) |
| break; |
| |
| /* str .= str */ |
| s = get_tv_string(tv1); |
| s = concat_str(s, get_tv_string_buf(tv2, numbuf)); |
| clear_tv(tv1); |
| tv1->v_type = VAR_STRING; |
| tv1->vval.v_string = s; |
| } |
| return OK; |
| |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| { |
| float_T f; |
| |
| if (*op == '.' || (tv2->v_type != VAR_FLOAT |
| && tv2->v_type != VAR_NUMBER |
| && tv2->v_type != VAR_STRING)) |
| break; |
| if (tv2->v_type == VAR_FLOAT) |
| f = tv2->vval.v_float; |
| else |
| f = get_tv_number(tv2); |
| if (*op == '+') |
| tv1->vval.v_float += f; |
| else |
| tv1->vval.v_float -= f; |
| } |
| #endif |
| return OK; |
| } |
| } |
| |
| EMSG2(_(e_letwrong), op); |
| return FAIL; |
| } |
| |
| /* |
| * Evaluate the expression used in a ":for var in expr" command. |
| * "arg" points to "var". |
| * Set "*errp" to TRUE for an error, FALSE otherwise; |
| * Return a pointer that holds the info. Null when there is an error. |
| */ |
| void * |
| eval_for_line( |
| char_u *arg, |
| int *errp, |
| char_u **nextcmdp, |
| int skip) |
| { |
| forinfo_T *fi; |
| char_u *expr; |
| typval_T tv; |
| list_T *l; |
| |
| *errp = TRUE; /* default: there is an error */ |
| |
| fi = (forinfo_T *)alloc_clear(sizeof(forinfo_T)); |
| if (fi == NULL) |
| return NULL; |
| |
| expr = skip_var_list(arg, &fi->fi_varcount, &fi->fi_semicolon); |
| if (expr == NULL) |
| return fi; |
| |
| expr = skipwhite(expr); |
| if (expr[0] != 'i' || expr[1] != 'n' || !vim_iswhite(expr[2])) |
| { |
| EMSG(_("E690: Missing \"in\" after :for")); |
| return fi; |
| } |
| |
| if (skip) |
| ++emsg_skip; |
| if (eval0(skipwhite(expr + 2), &tv, nextcmdp, !skip) == OK) |
| { |
| *errp = FALSE; |
| if (!skip) |
| { |
| l = tv.vval.v_list; |
| if (tv.v_type != VAR_LIST) |
| { |
| EMSG(_(e_listreq)); |
| clear_tv(&tv); |
| } |
| else if (l == NULL) |
| { |
| /* a null list is like an empty list: do nothing */ |
| clear_tv(&tv); |
| } |
| else |
| { |
| /* No need to increment the refcount, it's already set for the |
| * list being used in "tv". */ |
| fi->fi_list = l; |
| list_add_watch(l, &fi->fi_lw); |
| fi->fi_lw.lw_item = l->lv_first; |
| } |
| } |
| } |
| if (skip) |
| --emsg_skip; |
| |
| return fi; |
| } |
| |
| /* |
| * Use the first item in a ":for" list. Advance to the next. |
| * Assign the values to the variable (list). "arg" points to the first one. |
| * Return TRUE when a valid item was found, FALSE when at end of list or |
| * something wrong. |
| */ |
| int |
| next_for_item(void *fi_void, char_u *arg) |
| { |
| forinfo_T *fi = (forinfo_T *)fi_void; |
| int result; |
| listitem_T *item; |
| |
| item = fi->fi_lw.lw_item; |
| if (item == NULL) |
| result = FALSE; |
| else |
| { |
| fi->fi_lw.lw_item = item->li_next; |
| result = (ex_let_vars(arg, &item->li_tv, TRUE, |
| fi->fi_semicolon, fi->fi_varcount, NULL) == OK); |
| } |
| return result; |
| } |
| |
| /* |
| * Free the structure used to store info used by ":for". |
| */ |
| void |
| free_for_info(void *fi_void) |
| { |
| forinfo_T *fi = (forinfo_T *)fi_void; |
| |
| if (fi != NULL && fi->fi_list != NULL) |
| { |
| list_rem_watch(fi->fi_list, &fi->fi_lw); |
| list_unref(fi->fi_list); |
| } |
| vim_free(fi); |
| } |
| |
| #if defined(FEAT_CMDL_COMPL) || defined(PROTO) |
| |
| void |
| set_context_for_expression( |
| expand_T *xp, |
| char_u *arg, |
| cmdidx_T cmdidx) |
| { |
| int got_eq = FALSE; |
| int c; |
| char_u *p; |
| |
| if (cmdidx == CMD_let) |
| { |
| xp->xp_context = EXPAND_USER_VARS; |
| if (vim_strpbrk(arg, (char_u *)"\"'+-*/%.=!?~|&$([<>,#") == NULL) |
| { |
| /* ":let var1 var2 ...": find last space. */ |
| for (p = arg + STRLEN(arg); p >= arg; ) |
| { |
| xp->xp_pattern = p; |
| mb_ptr_back(arg, p); |
| if (vim_iswhite(*p)) |
| break; |
| } |
| return; |
| } |
| } |
| else |
| xp->xp_context = cmdidx == CMD_call ? EXPAND_FUNCTIONS |
| : EXPAND_EXPRESSION; |
| while ((xp->xp_pattern = vim_strpbrk(arg, |
| (char_u *)"\"'+-*/%.=!?~|&$([<>,#")) != NULL) |
| { |
| c = *xp->xp_pattern; |
| if (c == '&') |
| { |
| c = xp->xp_pattern[1]; |
| if (c == '&') |
| { |
| ++xp->xp_pattern; |
| xp->xp_context = cmdidx != CMD_let || got_eq |
| ? EXPAND_EXPRESSION : EXPAND_NOTHING; |
| } |
| else if (c != ' ') |
| { |
| xp->xp_context = EXPAND_SETTINGS; |
| if ((c == 'l' || c == 'g') && xp->xp_pattern[2] == ':') |
| xp->xp_pattern += 2; |
| |
| } |
| } |
| else if (c == '$') |
| { |
| /* environment variable */ |
| xp->xp_context = EXPAND_ENV_VARS; |
| } |
| else if (c == '=') |
| { |
| got_eq = TRUE; |
| xp->xp_context = EXPAND_EXPRESSION; |
| } |
| else if (c == '#' |
| && xp->xp_context == EXPAND_EXPRESSION) |
| { |
| /* Autoload function/variable contains '#'. */ |
| break; |
| } |
| else if ((c == '<' || c == '#') |
| && xp->xp_context == EXPAND_FUNCTIONS |
| && vim_strchr(xp->xp_pattern, '(') == NULL) |
| { |
| /* Function name can start with "<SNR>" and contain '#'. */ |
| break; |
| } |
| else if (cmdidx != CMD_let || got_eq) |
| { |
| if (c == '"') /* string */ |
| { |
| while ((c = *++xp->xp_pattern) != NUL && c != '"') |
| if (c == '\\' && xp->xp_pattern[1] != NUL) |
| ++xp->xp_pattern; |
| xp->xp_context = EXPAND_NOTHING; |
| } |
| else if (c == '\'') /* literal string */ |
| { |
| /* Trick: '' is like stopping and starting a literal string. */ |
| while ((c = *++xp->xp_pattern) != NUL && c != '\'') |
| /* skip */ ; |
| xp->xp_context = EXPAND_NOTHING; |
| } |
| else if (c == '|') |
| { |
| if (xp->xp_pattern[1] == '|') |
| { |
| ++xp->xp_pattern; |
| xp->xp_context = EXPAND_EXPRESSION; |
| } |
| else |
| xp->xp_context = EXPAND_COMMANDS; |
| } |
| else |
| xp->xp_context = EXPAND_EXPRESSION; |
| } |
| else |
| /* Doesn't look like something valid, expand as an expression |
| * anyway. */ |
| xp->xp_context = EXPAND_EXPRESSION; |
| arg = xp->xp_pattern; |
| if (*arg != NUL) |
| while ((c = *++arg) != NUL && (c == ' ' || c == '\t')) |
| /* skip */ ; |
| } |
| xp->xp_pattern = arg; |
| } |
| |
| #endif /* FEAT_CMDL_COMPL */ |
| |
| /* |
| * ":unlet[!] var1 ... " command. |
| */ |
| void |
| ex_unlet(exarg_T *eap) |
| { |
| ex_unletlock(eap, eap->arg, 0); |
| } |
| |
| /* |
| * ":lockvar" and ":unlockvar" commands |
| */ |
| void |
| ex_lockvar(exarg_T *eap) |
| { |
| char_u *arg = eap->arg; |
| int deep = 2; |
| |
| if (eap->forceit) |
| deep = -1; |
| else if (vim_isdigit(*arg)) |
| { |
| deep = getdigits(&arg); |
| arg = skipwhite(arg); |
| } |
| |
| ex_unletlock(eap, arg, deep); |
| } |
| |
| /* |
| * ":unlet", ":lockvar" and ":unlockvar" are quite similar. |
| */ |
| static void |
| ex_unletlock( |
| exarg_T *eap, |
| char_u *argstart, |
| int deep) |
| { |
| char_u *arg = argstart; |
| char_u *name_end; |
| int error = FALSE; |
| lval_T lv; |
| |
| do |
| { |
| /* Parse the name and find the end. */ |
| name_end = get_lval(arg, NULL, &lv, TRUE, eap->skip || error, 0, |
| FNE_CHECK_START); |
| if (lv.ll_name == NULL) |
| error = TRUE; /* error but continue parsing */ |
| if (name_end == NULL || (!vim_iswhite(*name_end) |
| && !ends_excmd(*name_end))) |
| { |
| if (name_end != NULL) |
| { |
| emsg_severe = TRUE; |
| EMSG(_(e_trailing)); |
| } |
| if (!(eap->skip || error)) |
| clear_lval(&lv); |
| break; |
| } |
| |
| if (!error && !eap->skip) |
| { |
| if (eap->cmdidx == CMD_unlet) |
| { |
| if (do_unlet_var(&lv, name_end, eap->forceit) == FAIL) |
| error = TRUE; |
| } |
| else |
| { |
| if (do_lock_var(&lv, name_end, deep, |
| eap->cmdidx == CMD_lockvar) == FAIL) |
| error = TRUE; |
| } |
| } |
| |
| if (!eap->skip) |
| clear_lval(&lv); |
| |
| arg = skipwhite(name_end); |
| } while (!ends_excmd(*arg)); |
| |
| eap->nextcmd = check_nextcmd(arg); |
| } |
| |
| static int |
| do_unlet_var( |
| lval_T *lp, |
| char_u *name_end, |
| int forceit) |
| { |
| int ret = OK; |
| int cc; |
| |
| if (lp->ll_tv == NULL) |
| { |
| cc = *name_end; |
| *name_end = NUL; |
| |
| /* Normal name or expanded name. */ |
| if (check_changedtick(lp->ll_name)) |
| ret = FAIL; |
| else if (do_unlet(lp->ll_name, forceit) == FAIL) |
| ret = FAIL; |
| *name_end = cc; |
| } |
| else if ((lp->ll_list != NULL |
| && tv_check_lock(lp->ll_list->lv_lock, lp->ll_name, FALSE)) |
| || (lp->ll_dict != NULL |
| && tv_check_lock(lp->ll_dict->dv_lock, lp->ll_name, FALSE))) |
| return FAIL; |
| else if (lp->ll_range) |
| { |
| listitem_T *li; |
| listitem_T *ll_li = lp->ll_li; |
| int ll_n1 = lp->ll_n1; |
| |
| while (ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= ll_n1)) |
| { |
| li = ll_li->li_next; |
| if (tv_check_lock(ll_li->li_tv.v_lock, lp->ll_name, FALSE)) |
| return FAIL; |
| ll_li = li; |
| ++ll_n1; |
| } |
| |
| /* Delete a range of List items. */ |
| while (lp->ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1)) |
| { |
| li = lp->ll_li->li_next; |
| listitem_remove(lp->ll_list, lp->ll_li); |
| lp->ll_li = li; |
| ++lp->ll_n1; |
| } |
| } |
| else |
| { |
| if (lp->ll_list != NULL) |
| /* unlet a List item. */ |
| listitem_remove(lp->ll_list, lp->ll_li); |
| else |
| /* unlet a Dictionary item. */ |
| dictitem_remove(lp->ll_dict, lp->ll_di); |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * "unlet" a variable. Return OK if it existed, FAIL if not. |
| * When "forceit" is TRUE don't complain if the variable doesn't exist. |
| */ |
| int |
| do_unlet(char_u *name, int forceit) |
| { |
| hashtab_T *ht; |
| hashitem_T *hi; |
| char_u *varname; |
| dict_T *d; |
| dictitem_T *di; |
| |
| ht = find_var_ht(name, &varname); |
| if (ht != NULL && *varname != NUL) |
| { |
| d = get_current_funccal_dict(ht); |
| if (d == NULL) |
| { |
| if (ht == &globvarht) |
| d = &globvardict; |
| else if (ht == &compat_hashtab) |
| d = &vimvardict; |
| else |
| { |
| di = find_var_in_ht(ht, *name, (char_u *)"", FALSE); |
| d = di == NULL ? NULL : di->di_tv.vval.v_dict; |
| } |
| if (d == NULL) |
| { |
| EMSG2(_(e_intern2), "do_unlet()"); |
| return FAIL; |
| } |
| } |
| hi = hash_find(ht, varname); |
| if (HASHITEM_EMPTY(hi)) |
| hi = find_hi_in_scoped_ht(name, &ht); |
| if (hi != NULL && !HASHITEM_EMPTY(hi)) |
| { |
| di = HI2DI(hi); |
| if (var_check_fixed(di->di_flags, name, FALSE) |
| || var_check_ro(di->di_flags, name, FALSE) |
| || tv_check_lock(d->dv_lock, name, FALSE)) |
| return FAIL; |
| |
| delete_var(ht, hi); |
| return OK; |
| } |
| } |
| if (forceit) |
| return OK; |
| EMSG2(_("E108: No such variable: \"%s\""), name); |
| return FAIL; |
| } |
| |
| /* |
| * Lock or unlock variable indicated by "lp". |
| * "deep" is the levels to go (-1 for unlimited); |
| * "lock" is TRUE for ":lockvar", FALSE for ":unlockvar". |
| */ |
| static int |
| do_lock_var( |
| lval_T *lp, |
| char_u *name_end, |
| int deep, |
| int lock) |
| { |
| int ret = OK; |
| int cc; |
| dictitem_T *di; |
| |
| if (deep == 0) /* nothing to do */ |
| return OK; |
| |
| if (lp->ll_tv == NULL) |
| { |
| cc = *name_end; |
| *name_end = NUL; |
| |
| /* Normal name or expanded name. */ |
| if (check_changedtick(lp->ll_name)) |
| ret = FAIL; |
| else |
| { |
| di = find_var(lp->ll_name, NULL, TRUE); |
| if (di == NULL) |
| ret = FAIL; |
| else |
| { |
| if (lock) |
| di->di_flags |= DI_FLAGS_LOCK; |
| else |
| di->di_flags &= ~DI_FLAGS_LOCK; |
| item_lock(&di->di_tv, deep, lock); |
| } |
| } |
| *name_end = cc; |
| } |
| else if (lp->ll_range) |
| { |
| listitem_T *li = lp->ll_li; |
| |
| /* (un)lock a range of List items. */ |
| while (li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1)) |
| { |
| item_lock(&li->li_tv, deep, lock); |
| li = li->li_next; |
| ++lp->ll_n1; |
| } |
| } |
| else if (lp->ll_list != NULL) |
| /* (un)lock a List item. */ |
| item_lock(&lp->ll_li->li_tv, deep, lock); |
| else |
| /* (un)lock a Dictionary item. */ |
| item_lock(&lp->ll_di->di_tv, deep, lock); |
| |
| return ret; |
| } |
| |
| /* |
| * Lock or unlock an item. "deep" is nr of levels to go. |
| */ |
| static void |
| item_lock(typval_T *tv, int deep, int lock) |
| { |
| static int recurse = 0; |
| list_T *l; |
| listitem_T *li; |
| dict_T *d; |
| hashitem_T *hi; |
| int todo; |
| |
| if (recurse >= DICT_MAXNEST) |
| { |
| EMSG(_("E743: variable nested too deep for (un)lock")); |
| return; |
| } |
| if (deep == 0) |
| return; |
| ++recurse; |
| |
| /* lock/unlock the item itself */ |
| if (lock) |
| tv->v_lock |= VAR_LOCKED; |
| else |
| tv->v_lock &= ~VAR_LOCKED; |
| |
| switch (tv->v_type) |
| { |
| case VAR_UNKNOWN: |
| case VAR_NUMBER: |
| case VAR_STRING: |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| case VAR_FLOAT: |
| case VAR_SPECIAL: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| break; |
| |
| case VAR_LIST: |
| if ((l = tv->vval.v_list) != NULL) |
| { |
| if (lock) |
| l->lv_lock |= VAR_LOCKED; |
| else |
| l->lv_lock &= ~VAR_LOCKED; |
| if (deep < 0 || deep > 1) |
| /* recursive: lock/unlock the items the List contains */ |
| for (li = l->lv_first; li != NULL; li = li->li_next) |
| item_lock(&li->li_tv, deep - 1, lock); |
| } |
| break; |
| case VAR_DICT: |
| if ((d = tv->vval.v_dict) != NULL) |
| { |
| if (lock) |
| d->dv_lock |= VAR_LOCKED; |
| else |
| d->dv_lock &= ~VAR_LOCKED; |
| if (deep < 0 || deep > 1) |
| { |
| /* recursive: lock/unlock the items the List contains */ |
| todo = (int)d->dv_hashtab.ht_used; |
| for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| item_lock(&HI2DI(hi)->di_tv, deep - 1, lock); |
| } |
| } |
| } |
| } |
| } |
| --recurse; |
| } |
| |
| #if (defined(FEAT_MENU) && defined(FEAT_MULTI_LANG)) || defined(PROTO) |
| /* |
| * Delete all "menutrans_" variables. |
| */ |
| void |
| del_menutrans_vars(void) |
| { |
| hashitem_T *hi; |
| int todo; |
| |
| hash_lock(&globvarht); |
| todo = (int)globvarht.ht_used; |
| for (hi = globvarht.ht_array; todo > 0 && !got_int; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| if (STRNCMP(HI2DI(hi)->di_key, "menutrans_", 10) == 0) |
| delete_var(&globvarht, hi); |
| } |
| } |
| hash_unlock(&globvarht); |
| } |
| #endif |
| |
| #if defined(FEAT_CMDL_COMPL) || defined(PROTO) |
| |
| /* |
| * Local string buffer for the next two functions to store a variable name |
| * with its prefix. Allocated in cat_prefix_varname(), freed later in |
| * get_user_var_name(). |
| */ |
| |
| static char_u *cat_prefix_varname(int prefix, char_u *name); |
| |
| static char_u *varnamebuf = NULL; |
| static int varnamebuflen = 0; |
| |
| /* |
| * Function to concatenate a prefix and a variable name. |
| */ |
| static char_u * |
| cat_prefix_varname(int prefix, char_u *name) |
| { |
| int len; |
| |
| len = (int)STRLEN(name) + 3; |
| if (len > varnamebuflen) |
| { |
| vim_free(varnamebuf); |
| len += 10; /* some additional space */ |
| varnamebuf = alloc(len); |
| if (varnamebuf == NULL) |
| { |
| varnamebuflen = 0; |
| return NULL; |
| } |
| varnamebuflen = len; |
| } |
| *varnamebuf = prefix; |
| varnamebuf[1] = ':'; |
| STRCPY(varnamebuf + 2, name); |
| return varnamebuf; |
| } |
| |
| /* |
| * Function given to ExpandGeneric() to obtain the list of user defined |
| * (global/buffer/window/built-in) variable names. |
| */ |
| char_u * |
| get_user_var_name(expand_T *xp, int idx) |
| { |
| static long_u gdone; |
| static long_u bdone; |
| static long_u wdone; |
| #ifdef FEAT_WINDOWS |
| static long_u tdone; |
| #endif |
| static int vidx; |
| static hashitem_T *hi; |
| hashtab_T *ht; |
| |
| if (idx == 0) |
| { |
| gdone = bdone = wdone = vidx = 0; |
| #ifdef FEAT_WINDOWS |
| tdone = 0; |
| #endif |
| } |
| |
| /* Global variables */ |
| if (gdone < globvarht.ht_used) |
| { |
| if (gdone++ == 0) |
| hi = globvarht.ht_array; |
| else |
| ++hi; |
| while (HASHITEM_EMPTY(hi)) |
| ++hi; |
| if (STRNCMP("g:", xp->xp_pattern, 2) == 0) |
| return cat_prefix_varname('g', hi->hi_key); |
| return hi->hi_key; |
| } |
| |
| /* b: variables */ |
| ht = &curbuf->b_vars->dv_hashtab; |
| if (bdone < ht->ht_used) |
| { |
| if (bdone++ == 0) |
| hi = ht->ht_array; |
| else |
| ++hi; |
| while (HASHITEM_EMPTY(hi)) |
| ++hi; |
| return cat_prefix_varname('b', hi->hi_key); |
| } |
| if (bdone == ht->ht_used) |
| { |
| ++bdone; |
| return (char_u *)"b:changedtick"; |
| } |
| |
| /* w: variables */ |
| ht = &curwin->w_vars->dv_hashtab; |
| if (wdone < ht->ht_used) |
| { |
| if (wdone++ == 0) |
| hi = ht->ht_array; |
| else |
| ++hi; |
| while (HASHITEM_EMPTY(hi)) |
| ++hi; |
| return cat_prefix_varname('w', hi->hi_key); |
| } |
| |
| #ifdef FEAT_WINDOWS |
| /* t: variables */ |
| ht = &curtab->tp_vars->dv_hashtab; |
| if (tdone < ht->ht_used) |
| { |
| if (tdone++ == 0) |
| hi = ht->ht_array; |
| else |
| ++hi; |
| while (HASHITEM_EMPTY(hi)) |
| ++hi; |
| return cat_prefix_varname('t', hi->hi_key); |
| } |
| #endif |
| |
| /* v: variables */ |
| if (vidx < VV_LEN) |
| return cat_prefix_varname('v', (char_u *)vimvars[vidx++].vv_name); |
| |
| vim_free(varnamebuf); |
| varnamebuf = NULL; |
| varnamebuflen = 0; |
| return NULL; |
| } |
| |
| #endif /* FEAT_CMDL_COMPL */ |
| |
| /* |
| * Return TRUE if "pat" matches "text". |
| * Does not use 'cpo' and always uses 'magic'. |
| */ |
| static int |
| pattern_match(char_u *pat, char_u *text, int ic) |
| { |
| int matches = FALSE; |
| char_u *save_cpo; |
| regmatch_T regmatch; |
| |
| /* avoid 'l' flag in 'cpoptions' */ |
| save_cpo = p_cpo; |
| p_cpo = (char_u *)""; |
| regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING); |
| if (regmatch.regprog != NULL) |
| { |
| regmatch.rm_ic = ic; |
| matches = vim_regexec_nl(®match, text, (colnr_T)0); |
| vim_regfree(regmatch.regprog); |
| } |
| p_cpo = save_cpo; |
| return matches; |
| } |
| |
| /* |
| * types for expressions. |
| */ |
| typedef enum |
| { |
| TYPE_UNKNOWN = 0 |
| , TYPE_EQUAL /* == */ |
| , TYPE_NEQUAL /* != */ |
| , TYPE_GREATER /* > */ |
| , TYPE_GEQUAL /* >= */ |
| , TYPE_SMALLER /* < */ |
| , TYPE_SEQUAL /* <= */ |
| , TYPE_MATCH /* =~ */ |
| , TYPE_NOMATCH /* !~ */ |
| } exptype_T; |
| |
| /* |
| * The "evaluate" argument: When FALSE, the argument is only parsed but not |
| * executed. The function may return OK, but the rettv will be of type |
| * VAR_UNKNOWN. The function still returns FAIL for a syntax error. |
| */ |
| |
| /* |
| * Handle zero level expression. |
| * This calls eval1() and handles error message and nextcmd. |
| * Put the result in "rettv" when returning OK and "evaluate" is TRUE. |
| * Note: "rettv.v_lock" is not set. |
| * Return OK or FAIL. |
| */ |
| int |
| eval0( |
| char_u *arg, |
| typval_T *rettv, |
| char_u **nextcmd, |
| int evaluate) |
| { |
| int ret; |
| char_u *p; |
| |
| p = skipwhite(arg); |
| ret = eval1(&p, rettv, evaluate); |
| if (ret == FAIL || !ends_excmd(*p)) |
| { |
| if (ret != FAIL) |
| clear_tv(rettv); |
| /* |
| * Report the invalid expression unless the expression evaluation has |
| * been cancelled due to an aborting error, an interrupt, or an |
| * exception. |
| */ |
| if (!aborting()) |
| EMSG2(_(e_invexpr2), arg); |
| ret = FAIL; |
| } |
| if (nextcmd != NULL) |
| *nextcmd = check_nextcmd(p); |
| |
| return ret; |
| } |
| |
| /* |
| * Handle top level expression: |
| * expr2 ? expr1 : expr1 |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Note: "rettv.v_lock" is not set. |
| * |
| * Return OK or FAIL. |
| */ |
| int |
| eval1(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| int result; |
| typval_T var2; |
| |
| /* |
| * Get the first variable. |
| */ |
| if (eval2(arg, rettv, evaluate) == FAIL) |
| return FAIL; |
| |
| if ((*arg)[0] == '?') |
| { |
| result = FALSE; |
| if (evaluate) |
| { |
| int error = FALSE; |
| |
| if (get_tv_number_chk(rettv, &error) != 0) |
| result = TRUE; |
| clear_tv(rettv); |
| if (error) |
| return FAIL; |
| } |
| |
| /* |
| * Get the second variable. |
| */ |
| *arg = skipwhite(*arg + 1); |
| if (eval1(arg, rettv, evaluate && result) == FAIL) /* recursive! */ |
| return FAIL; |
| |
| /* |
| * Check for the ":". |
| */ |
| if ((*arg)[0] != ':') |
| { |
| EMSG(_("E109: Missing ':' after '?'")); |
| if (evaluate && result) |
| clear_tv(rettv); |
| return FAIL; |
| } |
| |
| /* |
| * Get the third variable. |
| */ |
| *arg = skipwhite(*arg + 1); |
| if (eval1(arg, &var2, evaluate && !result) == FAIL) /* recursive! */ |
| { |
| if (evaluate && result) |
| clear_tv(rettv); |
| return FAIL; |
| } |
| if (evaluate && !result) |
| *rettv = var2; |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Handle first level expression: |
| * expr2 || expr2 || expr2 logical OR |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Return OK or FAIL. |
| */ |
| static int |
| eval2(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| typval_T var2; |
| long result; |
| int first; |
| int error = FALSE; |
| |
| /* |
| * Get the first variable. |
| */ |
| if (eval3(arg, rettv, evaluate) == FAIL) |
| return FAIL; |
| |
| /* |
| * Repeat until there is no following "||". |
| */ |
| first = TRUE; |
| result = FALSE; |
| while ((*arg)[0] == '|' && (*arg)[1] == '|') |
| { |
| if (evaluate && first) |
| { |
| if (get_tv_number_chk(rettv, &error) != 0) |
| result = TRUE; |
| clear_tv(rettv); |
| if (error) |
| return FAIL; |
| first = FALSE; |
| } |
| |
| /* |
| * Get the second variable. |
| */ |
| *arg = skipwhite(*arg + 2); |
| if (eval3(arg, &var2, evaluate && !result) == FAIL) |
| return FAIL; |
| |
| /* |
| * Compute the result. |
| */ |
| if (evaluate && !result) |
| { |
| if (get_tv_number_chk(&var2, &error) != 0) |
| result = TRUE; |
| clear_tv(&var2); |
| if (error) |
| return FAIL; |
| } |
| if (evaluate) |
| { |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = result; |
| } |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Handle second level expression: |
| * expr3 && expr3 && expr3 logical AND |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Return OK or FAIL. |
| */ |
| static int |
| eval3(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| typval_T var2; |
| long result; |
| int first; |
| int error = FALSE; |
| |
| /* |
| * Get the first variable. |
| */ |
| if (eval4(arg, rettv, evaluate) == FAIL) |
| return FAIL; |
| |
| /* |
| * Repeat until there is no following "&&". |
| */ |
| first = TRUE; |
| result = TRUE; |
| while ((*arg)[0] == '&' && (*arg)[1] == '&') |
| { |
| if (evaluate && first) |
| { |
| if (get_tv_number_chk(rettv, &error) == 0) |
| result = FALSE; |
| clear_tv(rettv); |
| if (error) |
| return FAIL; |
| first = FALSE; |
| } |
| |
| /* |
| * Get the second variable. |
| */ |
| *arg = skipwhite(*arg + 2); |
| if (eval4(arg, &var2, evaluate && result) == FAIL) |
| return FAIL; |
| |
| /* |
| * Compute the result. |
| */ |
| if (evaluate && result) |
| { |
| if (get_tv_number_chk(&var2, &error) == 0) |
| result = FALSE; |
| clear_tv(&var2); |
| if (error) |
| return FAIL; |
| } |
| if (evaluate) |
| { |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = result; |
| } |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Handle third level expression: |
| * var1 == var2 |
| * var1 =~ var2 |
| * var1 != var2 |
| * var1 !~ var2 |
| * var1 > var2 |
| * var1 >= var2 |
| * var1 < var2 |
| * var1 <= var2 |
| * var1 is var2 |
| * var1 isnot var2 |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Return OK or FAIL. |
| */ |
| static int |
| eval4(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| typval_T var2; |
| char_u *p; |
| int i; |
| exptype_T type = TYPE_UNKNOWN; |
| int type_is = FALSE; /* TRUE for "is" and "isnot" */ |
| int len = 2; |
| varnumber_T n1, n2; |
| char_u *s1, *s2; |
| char_u buf1[NUMBUFLEN], buf2[NUMBUFLEN]; |
| int ic; |
| |
| /* |
| * Get the first variable. |
| */ |
| if (eval5(arg, rettv, evaluate) == FAIL) |
| return FAIL; |
| |
| p = *arg; |
| switch (p[0]) |
| { |
| case '=': if (p[1] == '=') |
| type = TYPE_EQUAL; |
| else if (p[1] == '~') |
| type = TYPE_MATCH; |
| break; |
| case '!': if (p[1] == '=') |
| type = TYPE_NEQUAL; |
| else if (p[1] == '~') |
| type = TYPE_NOMATCH; |
| break; |
| case '>': if (p[1] != '=') |
| { |
| type = TYPE_GREATER; |
| len = 1; |
| } |
| else |
| type = TYPE_GEQUAL; |
| break; |
| case '<': if (p[1] != '=') |
| { |
| type = TYPE_SMALLER; |
| len = 1; |
| } |
| else |
| type = TYPE_SEQUAL; |
| break; |
| case 'i': if (p[1] == 's') |
| { |
| if (p[2] == 'n' && p[3] == 'o' && p[4] == 't') |
| len = 5; |
| i = p[len]; |
| if (!isalnum(i) && i != '_') |
| { |
| type = len == 2 ? TYPE_EQUAL : TYPE_NEQUAL; |
| type_is = TRUE; |
| } |
| } |
| break; |
| } |
| |
| /* |
| * If there is a comparative operator, use it. |
| */ |
| if (type != TYPE_UNKNOWN) |
| { |
| /* extra question mark appended: ignore case */ |
| if (p[len] == '?') |
| { |
| ic = TRUE; |
| ++len; |
| } |
| /* extra '#' appended: match case */ |
| else if (p[len] == '#') |
| { |
| ic = FALSE; |
| ++len; |
| } |
| /* nothing appended: use 'ignorecase' */ |
| else |
| ic = p_ic; |
| |
| /* |
| * Get the second variable. |
| */ |
| *arg = skipwhite(p + len); |
| if (eval5(arg, &var2, evaluate) == FAIL) |
| { |
| clear_tv(rettv); |
| return FAIL; |
| } |
| |
| if (evaluate) |
| { |
| if (type_is && rettv->v_type != var2.v_type) |
| { |
| /* For "is" a different type always means FALSE, for "notis" |
| * it means TRUE. */ |
| n1 = (type == TYPE_NEQUAL); |
| } |
| else if (rettv->v_type == VAR_LIST || var2.v_type == VAR_LIST) |
| { |
| if (type_is) |
| { |
| n1 = (rettv->v_type == var2.v_type |
| && rettv->vval.v_list == var2.vval.v_list); |
| if (type == TYPE_NEQUAL) |
| n1 = !n1; |
| } |
| else if (rettv->v_type != var2.v_type |
| || (type != TYPE_EQUAL && type != TYPE_NEQUAL)) |
| { |
| if (rettv->v_type != var2.v_type) |
| EMSG(_("E691: Can only compare List with List")); |
| else |
| EMSG(_("E692: Invalid operation for List")); |
| clear_tv(rettv); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| else |
| { |
| /* Compare two Lists for being equal or unequal. */ |
| n1 = list_equal(rettv->vval.v_list, var2.vval.v_list, |
| ic, FALSE); |
| if (type == TYPE_NEQUAL) |
| n1 = !n1; |
| } |
| } |
| |
| else if (rettv->v_type == VAR_DICT || var2.v_type == VAR_DICT) |
| { |
| if (type_is) |
| { |
| n1 = (rettv->v_type == var2.v_type |
| && rettv->vval.v_dict == var2.vval.v_dict); |
| if (type == TYPE_NEQUAL) |
| n1 = !n1; |
| } |
| else if (rettv->v_type != var2.v_type |
| || (type != TYPE_EQUAL && type != TYPE_NEQUAL)) |
| { |
| if (rettv->v_type != var2.v_type) |
| EMSG(_("E735: Can only compare Dictionary with Dictionary")); |
| else |
| EMSG(_("E736: Invalid operation for Dictionary")); |
| clear_tv(rettv); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| else |
| { |
| /* Compare two Dictionaries for being equal or unequal. */ |
| n1 = dict_equal(rettv->vval.v_dict, var2.vval.v_dict, |
| ic, FALSE); |
| if (type == TYPE_NEQUAL) |
| n1 = !n1; |
| } |
| } |
| |
| else if (rettv->v_type == VAR_FUNC || var2.v_type == VAR_FUNC |
| || rettv->v_type == VAR_PARTIAL || var2.v_type == VAR_PARTIAL) |
| { |
| if (type != TYPE_EQUAL && type != TYPE_NEQUAL) |
| { |
| EMSG(_("E694: Invalid operation for Funcrefs")); |
| clear_tv(rettv); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| if ((rettv->v_type == VAR_PARTIAL |
| && rettv->vval.v_partial == NULL) |
| || (var2.v_type == VAR_PARTIAL |
| && var2.vval.v_partial == NULL)) |
| /* when a partial is NULL assume not equal */ |
| n1 = FALSE; |
| else if (type_is) |
| { |
| if (rettv->v_type == VAR_FUNC && var2.v_type == VAR_FUNC) |
| /* strings are considered the same if their value is |
| * the same */ |
| n1 = tv_equal(rettv, &var2, ic, FALSE); |
| else if (rettv->v_type == VAR_PARTIAL |
| && var2.v_type == VAR_PARTIAL) |
| n1 = (rettv->vval.v_partial == var2.vval.v_partial); |
| else |
| n1 = FALSE; |
| } |
| else |
| n1 = tv_equal(rettv, &var2, ic, FALSE); |
| if (type == TYPE_NEQUAL) |
| n1 = !n1; |
| } |
| |
| #ifdef FEAT_FLOAT |
| /* |
| * If one of the two variables is a float, compare as a float. |
| * When using "=~" or "!~", always compare as string. |
| */ |
| else if ((rettv->v_type == VAR_FLOAT || var2.v_type == VAR_FLOAT) |
| && type != TYPE_MATCH && type != TYPE_NOMATCH) |
| { |
| float_T f1, f2; |
| |
| if (rettv->v_type == VAR_FLOAT) |
| f1 = rettv->vval.v_float; |
| else |
| f1 = get_tv_number(rettv); |
| if (var2.v_type == VAR_FLOAT) |
| f2 = var2.vval.v_float; |
| else |
| f2 = get_tv_number(&var2); |
| n1 = FALSE; |
| switch (type) |
| { |
| case TYPE_EQUAL: n1 = (f1 == f2); break; |
| case TYPE_NEQUAL: n1 = (f1 != f2); break; |
| case TYPE_GREATER: n1 = (f1 > f2); break; |
| case TYPE_GEQUAL: n1 = (f1 >= f2); break; |
| case TYPE_SMALLER: n1 = (f1 < f2); break; |
| case TYPE_SEQUAL: n1 = (f1 <= f2); break; |
| case TYPE_UNKNOWN: |
| case TYPE_MATCH: |
| case TYPE_NOMATCH: break; /* avoid gcc warning */ |
| } |
| } |
| #endif |
| |
| /* |
| * If one of the two variables is a number, compare as a number. |
| * When using "=~" or "!~", always compare as string. |
| */ |
| else if ((rettv->v_type == VAR_NUMBER || var2.v_type == VAR_NUMBER) |
| && type != TYPE_MATCH && type != TYPE_NOMATCH) |
| { |
| n1 = get_tv_number(rettv); |
| n2 = get_tv_number(&var2); |
| switch (type) |
| { |
| case TYPE_EQUAL: n1 = (n1 == n2); break; |
| case TYPE_NEQUAL: n1 = (n1 != n2); break; |
| case TYPE_GREATER: n1 = (n1 > n2); break; |
| case TYPE_GEQUAL: n1 = (n1 >= n2); break; |
| case TYPE_SMALLER: n1 = (n1 < n2); break; |
| case TYPE_SEQUAL: n1 = (n1 <= n2); break; |
| case TYPE_UNKNOWN: |
| case TYPE_MATCH: |
| case TYPE_NOMATCH: break; /* avoid gcc warning */ |
| } |
| } |
| else |
| { |
| s1 = get_tv_string_buf(rettv, buf1); |
| s2 = get_tv_string_buf(&var2, buf2); |
| if (type != TYPE_MATCH && type != TYPE_NOMATCH) |
| i = ic ? MB_STRICMP(s1, s2) : STRCMP(s1, s2); |
| else |
| i = 0; |
| n1 = FALSE; |
| switch (type) |
| { |
| case TYPE_EQUAL: n1 = (i == 0); break; |
| case TYPE_NEQUAL: n1 = (i != 0); break; |
| case TYPE_GREATER: n1 = (i > 0); break; |
| case TYPE_GEQUAL: n1 = (i >= 0); break; |
| case TYPE_SMALLER: n1 = (i < 0); break; |
| case TYPE_SEQUAL: n1 = (i <= 0); break; |
| |
| case TYPE_MATCH: |
| case TYPE_NOMATCH: |
| n1 = pattern_match(s2, s1, ic); |
| if (type == TYPE_NOMATCH) |
| n1 = !n1; |
| break; |
| |
| case TYPE_UNKNOWN: break; /* avoid gcc warning */ |
| } |
| } |
| clear_tv(rettv); |
| clear_tv(&var2); |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = n1; |
| } |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Handle fourth level expression: |
| * + number addition |
| * - number subtraction |
| * . string concatenation |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Return OK or FAIL. |
| */ |
| static int |
| eval5(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| typval_T var2; |
| typval_T var3; |
| int op; |
| varnumber_T n1, n2; |
| #ifdef FEAT_FLOAT |
| float_T f1 = 0, f2 = 0; |
| #endif |
| char_u *s1, *s2; |
| char_u buf1[NUMBUFLEN], buf2[NUMBUFLEN]; |
| char_u *p; |
| |
| /* |
| * Get the first variable. |
| */ |
| if (eval6(arg, rettv, evaluate, FALSE) == FAIL) |
| return FAIL; |
| |
| /* |
| * Repeat computing, until no '+', '-' or '.' is following. |
| */ |
| for (;;) |
| { |
| op = **arg; |
| if (op != '+' && op != '-' && op != '.') |
| break; |
| |
| if ((op != '+' || rettv->v_type != VAR_LIST) |
| #ifdef FEAT_FLOAT |
| && (op == '.' || rettv->v_type != VAR_FLOAT) |
| #endif |
| ) |
| { |
| /* For "list + ...", an illegal use of the first operand as |
| * a number cannot be determined before evaluating the 2nd |
| * operand: if this is also a list, all is ok. |
| * For "something . ...", "something - ..." or "non-list + ...", |
| * we know that the first operand needs to be a string or number |
| * without evaluating the 2nd operand. So check before to avoid |
| * side effects after an error. */ |
| if (evaluate && get_tv_string_chk(rettv) == NULL) |
| { |
| clear_tv(rettv); |
| return FAIL; |
| } |
| } |
| |
| /* |
| * Get the second variable. |
| */ |
| *arg = skipwhite(*arg + 1); |
| if (eval6(arg, &var2, evaluate, op == '.') == FAIL) |
| { |
| clear_tv(rettv); |
| return FAIL; |
| } |
| |
| if (evaluate) |
| { |
| /* |
| * Compute the result. |
| */ |
| if (op == '.') |
| { |
| s1 = get_tv_string_buf(rettv, buf1); /* already checked */ |
| s2 = get_tv_string_buf_chk(&var2, buf2); |
| if (s2 == NULL) /* type error ? */ |
| { |
| clear_tv(rettv); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| p = concat_str(s1, s2); |
| clear_tv(rettv); |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = p; |
| } |
| else if (op == '+' && rettv->v_type == VAR_LIST |
| && var2.v_type == VAR_LIST) |
| { |
| /* concatenate Lists */ |
| if (list_concat(rettv->vval.v_list, var2.vval.v_list, |
| &var3) == FAIL) |
| { |
| clear_tv(rettv); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| clear_tv(rettv); |
| *rettv = var3; |
| } |
| else |
| { |
| int error = FALSE; |
| |
| #ifdef FEAT_FLOAT |
| if (rettv->v_type == VAR_FLOAT) |
| { |
| f1 = rettv->vval.v_float; |
| n1 = 0; |
| } |
| else |
| #endif |
| { |
| n1 = get_tv_number_chk(rettv, &error); |
| if (error) |
| { |
| /* This can only happen for "list + non-list". For |
| * "non-list + ..." or "something - ...", we returned |
| * before evaluating the 2nd operand. */ |
| clear_tv(rettv); |
| return FAIL; |
| } |
| #ifdef FEAT_FLOAT |
| if (var2.v_type == VAR_FLOAT) |
| f1 = n1; |
| #endif |
| } |
| #ifdef FEAT_FLOAT |
| if (var2.v_type == VAR_FLOAT) |
| { |
| f2 = var2.vval.v_float; |
| n2 = 0; |
| } |
| else |
| #endif |
| { |
| n2 = get_tv_number_chk(&var2, &error); |
| if (error) |
| { |
| clear_tv(rettv); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| #ifdef FEAT_FLOAT |
| if (rettv->v_type == VAR_FLOAT) |
| f2 = n2; |
| #endif |
| } |
| clear_tv(rettv); |
| |
| #ifdef FEAT_FLOAT |
| /* If there is a float on either side the result is a float. */ |
| if (rettv->v_type == VAR_FLOAT || var2.v_type == VAR_FLOAT) |
| { |
| if (op == '+') |
| f1 = f1 + f2; |
| else |
| f1 = f1 - f2; |
| rettv->v_type = VAR_FLOAT; |
| rettv->vval.v_float = f1; |
| } |
| else |
| #endif |
| { |
| if (op == '+') |
| n1 = n1 + n2; |
| else |
| n1 = n1 - n2; |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = n1; |
| } |
| } |
| clear_tv(&var2); |
| } |
| } |
| return OK; |
| } |
| |
| /* |
| * Handle fifth level expression: |
| * * number multiplication |
| * / number division |
| * % number modulo |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Return OK or FAIL. |
| */ |
| static int |
| eval6( |
| char_u **arg, |
| typval_T *rettv, |
| int evaluate, |
| int want_string) /* after "." operator */ |
| { |
| typval_T var2; |
| int op; |
| varnumber_T n1, n2; |
| #ifdef FEAT_FLOAT |
| int use_float = FALSE; |
| float_T f1 = 0, f2; |
| #endif |
| int error = FALSE; |
| |
| /* |
| * Get the first variable. |
| */ |
| if (eval7(arg, rettv, evaluate, want_string) == FAIL) |
| return FAIL; |
| |
| /* |
| * Repeat computing, until no '*', '/' or '%' is following. |
| */ |
| for (;;) |
| { |
| op = **arg; |
| if (op != '*' && op != '/' && op != '%') |
| break; |
| |
| if (evaluate) |
| { |
| #ifdef FEAT_FLOAT |
| if (rettv->v_type == VAR_FLOAT) |
| { |
| f1 = rettv->vval.v_float; |
| use_float = TRUE; |
| n1 = 0; |
| } |
| else |
| #endif |
| n1 = get_tv_number_chk(rettv, &error); |
| clear_tv(rettv); |
| if (error) |
| return FAIL; |
| } |
| else |
| n1 = 0; |
| |
| /* |
| * Get the second variable. |
| */ |
| *arg = skipwhite(*arg + 1); |
| if (eval7(arg, &var2, evaluate, FALSE) == FAIL) |
| return FAIL; |
| |
| if (evaluate) |
| { |
| #ifdef FEAT_FLOAT |
| if (var2.v_type == VAR_FLOAT) |
| { |
| if (!use_float) |
| { |
| f1 = n1; |
| use_float = TRUE; |
| } |
| f2 = var2.vval.v_float; |
| n2 = 0; |
| } |
| else |
| #endif |
| { |
| n2 = get_tv_number_chk(&var2, &error); |
| clear_tv(&var2); |
| if (error) |
| return FAIL; |
| #ifdef FEAT_FLOAT |
| if (use_float) |
| f2 = n2; |
| #endif |
| } |
| |
| /* |
| * Compute the result. |
| * When either side is a float the result is a float. |
| */ |
| #ifdef FEAT_FLOAT |
| if (use_float) |
| { |
| if (op == '*') |
| f1 = f1 * f2; |
| else if (op == '/') |
| { |
| # ifdef VMS |
| /* VMS crashes on divide by zero, work around it */ |
| if (f2 == 0.0) |
| { |
| if (f1 == 0) |
| f1 = -1 * __F_FLT_MAX - 1L; /* similar to NaN */ |
| else if (f1 < 0) |
| f1 = -1 * __F_FLT_MAX; |
| else |
| f1 = __F_FLT_MAX; |
| } |
| else |
| f1 = f1 / f2; |
| # else |
| /* We rely on the floating point library to handle divide |
| * by zero to result in "inf" and not a crash. */ |
| f1 = f1 / f2; |
| # endif |
| } |
| else |
| { |
| EMSG(_("E804: Cannot use '%' with Float")); |
| return FAIL; |
| } |
| rettv->v_type = VAR_FLOAT; |
| rettv->vval.v_float = f1; |
| } |
| else |
| #endif |
| { |
| if (op == '*') |
| n1 = n1 * n2; |
| else if (op == '/') |
| { |
| if (n2 == 0) /* give an error message? */ |
| { |
| #ifdef FEAT_NUM64 |
| if (n1 == 0) |
| n1 = -0x7fffffffffffffffLL - 1; /* similar to NaN */ |
| else if (n1 < 0) |
| n1 = -0x7fffffffffffffffLL; |
| else |
| n1 = 0x7fffffffffffffffLL; |
| #else |
| if (n1 == 0) |
| n1 = -0x7fffffffL - 1L; /* similar to NaN */ |
| else if (n1 < 0) |
| n1 = -0x7fffffffL; |
| else |
| n1 = 0x7fffffffL; |
| #endif |
| } |
| else |
| n1 = n1 / n2; |
| } |
| else |
| { |
| if (n2 == 0) /* give an error message? */ |
| n1 = 0; |
| else |
| n1 = n1 % n2; |
| } |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = n1; |
| } |
| } |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Handle sixth level expression: |
| * number number constant |
| * "string" string constant |
| * 'string' literal string constant |
| * &option-name option value |
| * @r register contents |
| * identifier variable value |
| * function() function call |
| * $VAR environment variable |
| * (expression) nested expression |
| * [expr, expr] List |
| * {key: val, key: val} Dictionary |
| * |
| * Also handle: |
| * ! in front logical NOT |
| * - in front unary minus |
| * + in front unary plus (ignored) |
| * trailing [] subscript in String or List |
| * trailing .name entry in Dictionary |
| * |
| * "arg" must point to the first non-white of the expression. |
| * "arg" is advanced to the next non-white after the recognized expression. |
| * |
| * Return OK or FAIL. |
| */ |
| static int |
| eval7( |
| char_u **arg, |
| typval_T *rettv, |
| int evaluate, |
| int want_string UNUSED) /* after "." operator */ |
| { |
| varnumber_T n; |
| int len; |
| char_u *s; |
| char_u *start_leader, *end_leader; |
| int ret = OK; |
| char_u *alias; |
| |
| /* |
| * Initialise variable so that clear_tv() can't mistake this for a |
| * string and free a string that isn't there. |
| */ |
| rettv->v_type = VAR_UNKNOWN; |
| |
| /* |
| * Skip '!', '-' and '+' characters. They are handled later. |
| */ |
| start_leader = *arg; |
| while (**arg == '!' || **arg == '-' || **arg == '+') |
| *arg = skipwhite(*arg + 1); |
| end_leader = *arg; |
| |
| switch (**arg) |
| { |
| /* |
| * Number constant. |
| */ |
| case '0': |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| case '8': |
| case '9': |
| { |
| #ifdef FEAT_FLOAT |
| char_u *p = skipdigits(*arg + 1); |
| int get_float = FALSE; |
| |
| /* We accept a float when the format matches |
| * "[0-9]\+\.[0-9]\+\([eE][+-]\?[0-9]\+\)\?". This is very |
| * strict to avoid backwards compatibility problems. |
| * Don't look for a float after the "." operator, so that |
| * ":let vers = 1.2.3" doesn't fail. */ |
| if (!want_string && p[0] == '.' && vim_isdigit(p[1])) |
| { |
| get_float = TRUE; |
| p = skipdigits(p + 2); |
| if (*p == 'e' || *p == 'E') |
| { |
| ++p; |
| if (*p == '-' || *p == '+') |
| ++p; |
| if (!vim_isdigit(*p)) |
| get_float = FALSE; |
| else |
| p = skipdigits(p + 1); |
| } |
| if (ASCII_ISALPHA(*p) || *p == '.') |
| get_float = FALSE; |
| } |
| if (get_float) |
| { |
| float_T f; |
| |
| *arg += string2float(*arg, &f); |
| if (evaluate) |
| { |
| rettv->v_type = VAR_FLOAT; |
| rettv->vval.v_float = f; |
| } |
| } |
| else |
| #endif |
| { |
| vim_str2nr(*arg, NULL, &len, STR2NR_ALL, &n, NULL, 0); |
| *arg += len; |
| if (evaluate) |
| { |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = n; |
| } |
| } |
| break; |
| } |
| |
| /* |
| * String constant: "string". |
| */ |
| case '"': ret = get_string_tv(arg, rettv, evaluate); |
| break; |
| |
| /* |
| * Literal string constant: 'str''ing'. |
| */ |
| case '\'': ret = get_lit_string_tv(arg, rettv, evaluate); |
| break; |
| |
| /* |
| * List: [expr, expr] |
| */ |
| case '[': ret = get_list_tv(arg, rettv, evaluate); |
| break; |
| |
| /* |
| * Lambda: {arg, arg -> expr} |
| * Dictionary: {key: val, key: val} |
| */ |
| case '{': ret = get_lambda_tv(arg, rettv, evaluate); |
| if (ret == NOTDONE) |
| ret = get_dict_tv(arg, rettv, evaluate); |
| break; |
| |
| /* |
| * Option value: &name |
| */ |
| case '&': ret = get_option_tv(arg, rettv, evaluate); |
| break; |
| |
| /* |
| * Environment variable: $VAR. |
| */ |
| case '$': ret = get_env_tv(arg, rettv, evaluate); |
| break; |
| |
| /* |
| * Register contents: @r. |
| */ |
| case '@': ++*arg; |
| if (evaluate) |
| { |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = get_reg_contents(**arg, |
| GREG_EXPR_SRC); |
| } |
| if (**arg != NUL) |
| ++*arg; |
| break; |
| |
| /* |
| * nested expression: (expression). |
| */ |
| case '(': *arg = skipwhite(*arg + 1); |
| ret = eval1(arg, rettv, evaluate); /* recursive! */ |
| if (**arg == ')') |
| ++*arg; |
| else if (ret == OK) |
| { |
| EMSG(_("E110: Missing ')'")); |
| clear_tv(rettv); |
| ret = FAIL; |
| } |
| break; |
| |
| default: ret = NOTDONE; |
| break; |
| } |
| |
| if (ret == NOTDONE) |
| { |
| /* |
| * Must be a variable or function name. |
| * Can also be a curly-braces kind of name: {expr}. |
| */ |
| s = *arg; |
| len = get_name_len(arg, &alias, evaluate, TRUE); |
| if (alias != NULL) |
| s = alias; |
| |
| if (len <= 0) |
| ret = FAIL; |
| else |
| { |
| if (**arg == '(') /* recursive! */ |
| { |
| partial_T *partial; |
| |
| if (!evaluate) |
| check_vars(s, len); |
| |
| /* If "s" is the name of a variable of type VAR_FUNC |
| * use its contents. */ |
| s = deref_func_name(s, &len, &partial, !evaluate); |
| |
| /* Invoke the function. */ |
| ret = get_func_tv(s, len, rettv, arg, |
| curwin->w_cursor.lnum, curwin->w_cursor.lnum, |
| &len, evaluate, partial, NULL); |
| |
| /* If evaluate is FALSE rettv->v_type was not set in |
| * get_func_tv, but it's needed in handle_subscript() to parse |
| * what follows. So set it here. */ |
| if (rettv->v_type == VAR_UNKNOWN && !evaluate && **arg == '(') |
| { |
| rettv->vval.v_string = NULL; |
| rettv->v_type = VAR_FUNC; |
| } |
| |
| /* Stop the expression evaluation when immediately |
| * aborting on error, or when an interrupt occurred or |
| * an exception was thrown but not caught. */ |
| if (aborting()) |
| { |
| if (ret == OK) |
| clear_tv(rettv); |
| ret = FAIL; |
| } |
| } |
| else if (evaluate) |
| ret = get_var_tv(s, len, rettv, NULL, TRUE, FALSE); |
| else |
| { |
| check_vars(s, len); |
| ret = OK; |
| } |
| } |
| vim_free(alias); |
| } |
| |
| *arg = skipwhite(*arg); |
| |
| /* Handle following '[', '(' and '.' for expr[expr], expr.name, |
| * expr(expr). */ |
| if (ret == OK) |
| ret = handle_subscript(arg, rettv, evaluate, TRUE); |
| |
| /* |
| * Apply logical NOT and unary '-', from right to left, ignore '+'. |
| */ |
| if (ret == OK && evaluate && end_leader > start_leader) |
| { |
| int error = FALSE; |
| varnumber_T val = 0; |
| #ifdef FEAT_FLOAT |
| float_T f = 0.0; |
| |
| if (rettv->v_type == VAR_FLOAT) |
| f = rettv->vval.v_float; |
| else |
| #endif |
| val = get_tv_number_chk(rettv, &error); |
| if (error) |
| { |
| clear_tv(rettv); |
| ret = FAIL; |
| } |
| else |
| { |
| while (end_leader > start_leader) |
| { |
| --end_leader; |
| if (*end_leader == '!') |
| { |
| #ifdef FEAT_FLOAT |
| if (rettv->v_type == VAR_FLOAT) |
| f = !f; |
| else |
| #endif |
| val = !val; |
| } |
| else if (*end_leader == '-') |
| { |
| #ifdef FEAT_FLOAT |
| if (rettv->v_type == VAR_FLOAT) |
| f = -f; |
| else |
| #endif |
| val = -val; |
| } |
| } |
| #ifdef FEAT_FLOAT |
| if (rettv->v_type == VAR_FLOAT) |
| { |
| clear_tv(rettv); |
| rettv->vval.v_float = f; |
| } |
| else |
| #endif |
| { |
| clear_tv(rettv); |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = val; |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * Evaluate an "[expr]" or "[expr:expr]" index. Also "dict.key". |
| * "*arg" points to the '[' or '.'. |
| * Returns FAIL or OK. "*arg" is advanced to after the ']'. |
| */ |
| static int |
| eval_index( |
| char_u **arg, |
| typval_T *rettv, |
| int evaluate, |
| int verbose) /* give error messages */ |
| { |
| int empty1 = FALSE, empty2 = FALSE; |
| typval_T var1, var2; |
| long n1, n2 = 0; |
| long len = -1; |
| int range = FALSE; |
| char_u *s; |
| char_u *key = NULL; |
| |
| switch (rettv->v_type) |
| { |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| if (verbose) |
| EMSG(_("E695: Cannot index a Funcref")); |
| return FAIL; |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| if (verbose) |
| EMSG(_(e_float_as_string)); |
| return FAIL; |
| #endif |
| case VAR_SPECIAL: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| if (verbose) |
| EMSG(_("E909: Cannot index a special variable")); |
| return FAIL; |
| case VAR_UNKNOWN: |
| if (evaluate) |
| return FAIL; |
| /* FALLTHROUGH */ |
| |
| case VAR_STRING: |
| case VAR_NUMBER: |
| case VAR_LIST: |
| case VAR_DICT: |
| break; |
| } |
| |
| init_tv(&var1); |
| init_tv(&var2); |
| if (**arg == '.') |
| { |
| /* |
| * dict.name |
| */ |
| key = *arg + 1; |
| for (len = 0; ASCII_ISALNUM(key[len]) || key[len] == '_'; ++len) |
| ; |
| if (len == 0) |
| return FAIL; |
| *arg = skipwhite(key + len); |
| } |
| else |
| { |
| /* |
| * something[idx] |
| * |
| * Get the (first) variable from inside the []. |
| */ |
| *arg = skipwhite(*arg + 1); |
| if (**arg == ':') |
| empty1 = TRUE; |
| else if (eval1(arg, &var1, evaluate) == FAIL) /* recursive! */ |
| return FAIL; |
| else if (evaluate && get_tv_string_chk(&var1) == NULL) |
| { |
| /* not a number or string */ |
| clear_tv(&var1); |
| return FAIL; |
| } |
| |
| /* |
| * Get the second variable from inside the [:]. |
| */ |
| if (**arg == ':') |
| { |
| range = TRUE; |
| *arg = skipwhite(*arg + 1); |
| if (**arg == ']') |
| empty2 = TRUE; |
| else if (eval1(arg, &var2, evaluate) == FAIL) /* recursive! */ |
| { |
| if (!empty1) |
| clear_tv(&var1); |
| return FAIL; |
| } |
| else if (evaluate && get_tv_string_chk(&var2) == NULL) |
| { |
| /* not a number or string */ |
| if (!empty1) |
| clear_tv(&var1); |
| clear_tv(&var2); |
| return FAIL; |
| } |
| } |
| |
| /* Check for the ']'. */ |
| if (**arg != ']') |
| { |
| if (verbose) |
| EMSG(_(e_missbrac)); |
| clear_tv(&var1); |
| if (range) |
| clear_tv(&var2); |
| return FAIL; |
| } |
| *arg = skipwhite(*arg + 1); /* skip the ']' */ |
| } |
| |
| if (evaluate) |
| { |
| n1 = 0; |
| if (!empty1 && rettv->v_type != VAR_DICT) |
| { |
| n1 = get_tv_number(&var1); |
| clear_tv(&var1); |
| } |
| if (range) |
| { |
| if (empty2) |
| n2 = -1; |
| else |
| { |
| n2 = get_tv_number(&var2); |
| clear_tv(&var2); |
| } |
| } |
| |
| switch (rettv->v_type) |
| { |
| case VAR_UNKNOWN: |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| case VAR_FLOAT: |
| case VAR_SPECIAL: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| break; /* not evaluating, skipping over subscript */ |
| |
| case VAR_NUMBER: |
| case VAR_STRING: |
| s = get_tv_string(rettv); |
| len = (long)STRLEN(s); |
| if (range) |
| { |
| /* The resulting variable is a substring. If the indexes |
| * are out of range the result is empty. */ |
| if (n1 < 0) |
| { |
| n1 = len + n1; |
| if (n1 < 0) |
| n1 = 0; |
| } |
| if (n2 < 0) |
| n2 = len + n2; |
| else if (n2 >= len) |
| n2 = len; |
| if (n1 >= len || n2 < 0 || n1 > n2) |
| s = NULL; |
| else |
| s = vim_strnsave(s + n1, (int)(n2 - n1 + 1)); |
| } |
| else |
| { |
| /* The resulting variable is a string of a single |
| * character. If the index is too big or negative the |
| * result is empty. */ |
| if (n1 >= len || n1 < 0) |
| s = NULL; |
| else |
| s = vim_strnsave(s + n1, 1); |
| } |
| clear_tv(rettv); |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = s; |
| break; |
| |
| case VAR_LIST: |
| len = list_len(rettv->vval.v_list); |
| if (n1 < 0) |
| n1 = len + n1; |
| if (!empty1 && (n1 < 0 || n1 >= len)) |
| { |
| /* For a range we allow invalid values and return an empty |
| * list. A list index out of range is an error. */ |
| if (!range) |
| { |
| if (verbose) |
| EMSGN(_(e_listidx), n1); |
| return FAIL; |
| } |
| n1 = len; |
| } |
| if (range) |
| { |
| list_T *l; |
| listitem_T *item; |
| |
| if (n2 < 0) |
| n2 = len + n2; |
| else if (n2 >= len) |
| n2 = len - 1; |
| if (!empty2 && (n2 < 0 || n2 + 1 < n1)) |
| n2 = -1; |
| l = list_alloc(); |
| if (l == NULL) |
| return FAIL; |
| for (item = list_find(rettv->vval.v_list, n1); |
| n1 <= n2; ++n1) |
| { |
| if (list_append_tv(l, &item->li_tv) == FAIL) |
| { |
| list_free(l); |
| return FAIL; |
| } |
| item = item->li_next; |
| } |
| clear_tv(rettv); |
| rettv->v_type = VAR_LIST; |
| rettv->vval.v_list = l; |
| ++l->lv_refcount; |
| } |
| else |
| { |
| copy_tv(&list_find(rettv->vval.v_list, n1)->li_tv, &var1); |
| clear_tv(rettv); |
| *rettv = var1; |
| } |
| break; |
| |
| case VAR_DICT: |
| if (range) |
| { |
| if (verbose) |
| EMSG(_(e_dictrange)); |
| if (len == -1) |
| clear_tv(&var1); |
| return FAIL; |
| } |
| { |
| dictitem_T *item; |
| |
| if (len == -1) |
| { |
| key = get_tv_string_chk(&var1); |
| if (key == NULL) |
| { |
| clear_tv(&var1); |
| return FAIL; |
| } |
| } |
| |
| item = dict_find(rettv->vval.v_dict, key, (int)len); |
| |
| if (item == NULL && verbose) |
| EMSG2(_(e_dictkey), key); |
| if (len == -1) |
| clear_tv(&var1); |
| if (item == NULL) |
| return FAIL; |
| |
| copy_tv(&item->di_tv, &var1); |
| clear_tv(rettv); |
| *rettv = var1; |
| } |
| break; |
| } |
| } |
| |
| return OK; |
| } |
| |
| /* |
| * Get an option value. |
| * "arg" points to the '&' or '+' before the option name. |
| * "arg" is advanced to character after the option name. |
| * Return OK or FAIL. |
| */ |
| int |
| get_option_tv( |
| char_u **arg, |
| typval_T *rettv, /* when NULL, only check if option exists */ |
| int evaluate) |
| { |
| char_u *option_end; |
| long numval; |
| char_u *stringval; |
| int opt_type; |
| int c; |
| int working = (**arg == '+'); /* has("+option") */ |
| int ret = OK; |
| int opt_flags; |
| |
| /* |
| * Isolate the option name and find its value. |
| */ |
| option_end = find_option_end(arg, &opt_flags); |
| if (option_end == NULL) |
| { |
| if (rettv != NULL) |
| EMSG2(_("E112: Option name missing: %s"), *arg); |
| return FAIL; |
| } |
| |
| if (!evaluate) |
| { |
| *arg = option_end; |
| return OK; |
| } |
| |
| c = *option_end; |
| *option_end = NUL; |
| opt_type = get_option_value(*arg, &numval, |
| rettv == NULL ? NULL : &stringval, opt_flags); |
| |
| if (opt_type == -3) /* invalid name */ |
| { |
| if (rettv != NULL) |
| EMSG2(_("E113: Unknown option: %s"), *arg); |
| ret = FAIL; |
| } |
| else if (rettv != NULL) |
| { |
| if (opt_type == -2) /* hidden string option */ |
| { |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = NULL; |
| } |
| else if (opt_type == -1) /* hidden number option */ |
| { |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = 0; |
| } |
| else if (opt_type == 1) /* number option */ |
| { |
| rettv->v_type = VAR_NUMBER; |
| rettv->vval.v_number = numval; |
| } |
| else /* string option */ |
| { |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = stringval; |
| } |
| } |
| else if (working && (opt_type == -2 || opt_type == -1)) |
| ret = FAIL; |
| |
| *option_end = c; /* put back for error messages */ |
| *arg = option_end; |
| |
| return ret; |
| } |
| |
| /* |
| * Allocate a variable for a string constant. |
| * Return OK or FAIL. |
| */ |
| static int |
| get_string_tv(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| char_u *p; |
| char_u *name; |
| int extra = 0; |
| |
| /* |
| * Find the end of the string, skipping backslashed characters. |
| */ |
| for (p = *arg + 1; *p != NUL && *p != '"'; mb_ptr_adv(p)) |
| { |
| if (*p == '\\' && p[1] != NUL) |
| { |
| ++p; |
| /* A "\<x>" form occupies at least 4 characters, and produces up |
| * to 6 characters: reserve space for 2 extra */ |
| if (*p == '<') |
| extra += 2; |
| } |
| } |
| |
| if (*p != '"') |
| { |
| EMSG2(_("E114: Missing quote: %s"), *arg); |
| return FAIL; |
| } |
| |
| /* If only parsing, set *arg and return here */ |
| if (!evaluate) |
| { |
| *arg = p + 1; |
| return OK; |
| } |
| |
| /* |
| * Copy the string into allocated memory, handling backslashed |
| * characters. |
| */ |
| name = alloc((unsigned)(p - *arg + extra)); |
| if (name == NULL) |
| return FAIL; |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = name; |
| |
| for (p = *arg + 1; *p != NUL && *p != '"'; ) |
| { |
| if (*p == '\\') |
| { |
| switch (*++p) |
| { |
| case 'b': *name++ = BS; ++p; break; |
| case 'e': *name++ = ESC; ++p; break; |
| case 'f': *name++ = FF; ++p; break; |
| case 'n': *name++ = NL; ++p; break; |
| case 'r': *name++ = CAR; ++p; break; |
| case 't': *name++ = TAB; ++p; break; |
| |
| case 'X': /* hex: "\x1", "\x12" */ |
| case 'x': |
| case 'u': /* Unicode: "\u0023" */ |
| case 'U': |
| if (vim_isxdigit(p[1])) |
| { |
| int n, nr; |
| int c = toupper(*p); |
| |
| if (c == 'X') |
| n = 2; |
| else if (*p == 'u') |
| n = 4; |
| else |
| n = 8; |
| nr = 0; |
| while (--n >= 0 && vim_isxdigit(p[1])) |
| { |
| ++p; |
| nr = (nr << 4) + hex2nr(*p); |
| } |
| ++p; |
| #ifdef FEAT_MBYTE |
| /* For "\u" store the number according to |
| * 'encoding'. */ |
| if (c != 'X') |
| name += (*mb_char2bytes)(nr, name); |
| else |
| #endif |
| *name++ = nr; |
| } |
| break; |
| |
| /* octal: "\1", "\12", "\123" */ |
| case '0': |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': *name = *p++ - '0'; |
| if (*p >= '0' && *p <= '7') |
| { |
| *name = (*name << 3) + *p++ - '0'; |
| if (*p >= '0' && *p <= '7') |
| *name = (*name << 3) + *p++ - '0'; |
| } |
| ++name; |
| break; |
| |
| /* Special key, e.g.: "\<C-W>" */ |
| case '<': extra = trans_special(&p, name, TRUE, TRUE); |
| if (extra != 0) |
| { |
| name += extra; |
| break; |
| } |
| /* FALLTHROUGH */ |
| |
| default: MB_COPY_CHAR(p, name); |
| break; |
| } |
| } |
| else |
| MB_COPY_CHAR(p, name); |
| |
| } |
| *name = NUL; |
| if (*p != NUL) /* just in case */ |
| ++p; |
| *arg = p; |
| |
| return OK; |
| } |
| |
| /* |
| * Allocate a variable for a 'str''ing' constant. |
| * Return OK or FAIL. |
| */ |
| static int |
| get_lit_string_tv(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| char_u *p; |
| char_u *str; |
| int reduce = 0; |
| |
| /* |
| * Find the end of the string, skipping ''. |
| */ |
| for (p = *arg + 1; *p != NUL; mb_ptr_adv(p)) |
| { |
| if (*p == '\'') |
| { |
| if (p[1] != '\'') |
| break; |
| ++reduce; |
| ++p; |
| } |
| } |
| |
| if (*p != '\'') |
| { |
| EMSG2(_("E115: Missing quote: %s"), *arg); |
| return FAIL; |
| } |
| |
| /* If only parsing return after setting "*arg" */ |
| if (!evaluate) |
| { |
| *arg = p + 1; |
| return OK; |
| } |
| |
| /* |
| * Copy the string into allocated memory, handling '' to ' reduction. |
| */ |
| str = alloc((unsigned)((p - *arg) - reduce)); |
| if (str == NULL) |
| return FAIL; |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = str; |
| |
| for (p = *arg + 1; *p != NUL; ) |
| { |
| if (*p == '\'') |
| { |
| if (p[1] != '\'') |
| break; |
| ++p; |
| } |
| MB_COPY_CHAR(p, str); |
| } |
| *str = NUL; |
| *arg = p + 1; |
| |
| return OK; |
| } |
| |
| /* |
| * Return the function name of the partial. |
| */ |
| char_u * |
| partial_name(partial_T *pt) |
| { |
| if (pt->pt_name != NULL) |
| return pt->pt_name; |
| return pt->pt_func->uf_name; |
| } |
| |
| static void |
| partial_free(partial_T *pt) |
| { |
| int i; |
| |
| for (i = 0; i < pt->pt_argc; ++i) |
| clear_tv(&pt->pt_argv[i]); |
| vim_free(pt->pt_argv); |
| dict_unref(pt->pt_dict); |
| if (pt->pt_name != NULL) |
| { |
| func_unref(pt->pt_name); |
| vim_free(pt->pt_name); |
| } |
| else |
| func_ptr_unref(pt->pt_func); |
| vim_free(pt); |
| } |
| |
| /* |
| * Unreference a closure: decrement the reference count and free it when it |
| * becomes zero. |
| */ |
| void |
| partial_unref(partial_T *pt) |
| { |
| if (pt != NULL && --pt->pt_refcount <= 0) |
| partial_free(pt); |
| } |
| |
| static int tv_equal_recurse_limit; |
| |
| static int |
| func_equal( |
| typval_T *tv1, |
| typval_T *tv2, |
| int ic) /* ignore case */ |
| { |
| char_u *s1, *s2; |
| dict_T *d1, *d2; |
| int a1, a2; |
| int i; |
| |
| /* empty and NULL function name considered the same */ |
| s1 = tv1->v_type == VAR_FUNC ? tv1->vval.v_string |
| : partial_name(tv1->vval.v_partial); |
| if (s1 != NULL && *s1 == NUL) |
| s1 = NULL; |
| s2 = tv2->v_type == VAR_FUNC ? tv2->vval.v_string |
| : partial_name(tv2->vval.v_partial); |
| if (s2 != NULL && *s2 == NUL) |
| s2 = NULL; |
| if (s1 == NULL || s2 == NULL) |
| { |
| if (s1 != s2) |
| return FALSE; |
| } |
| else if (STRCMP(s1, s2) != 0) |
| return FALSE; |
| |
| /* empty dict and NULL dict is different */ |
| d1 = tv1->v_type == VAR_FUNC ? NULL : tv1->vval.v_partial->pt_dict; |
| d2 = tv2->v_type == VAR_FUNC ? NULL : tv2->vval.v_partial->pt_dict; |
| if (d1 == NULL || d2 == NULL) |
| { |
| if (d1 != d2) |
| return FALSE; |
| } |
| else if (!dict_equal(d1, d2, ic, TRUE)) |
| return FALSE; |
| |
| /* empty list and no list considered the same */ |
| a1 = tv1->v_type == VAR_FUNC ? 0 : tv1->vval.v_partial->pt_argc; |
| a2 = tv2->v_type == VAR_FUNC ? 0 : tv2->vval.v_partial->pt_argc; |
| if (a1 != a2) |
| return FALSE; |
| for (i = 0; i < a1; ++i) |
| if (!tv_equal(tv1->vval.v_partial->pt_argv + i, |
| tv2->vval.v_partial->pt_argv + i, ic, TRUE)) |
| return FALSE; |
| |
| return TRUE; |
| } |
| |
| /* |
| * Return TRUE if "tv1" and "tv2" have the same value. |
| * Compares the items just like "==" would compare them, but strings and |
| * numbers are different. Floats and numbers are also different. |
| */ |
| int |
| tv_equal( |
| typval_T *tv1, |
| typval_T *tv2, |
| int ic, /* ignore case */ |
| int recursive) /* TRUE when used recursively */ |
| { |
| char_u buf1[NUMBUFLEN], buf2[NUMBUFLEN]; |
| char_u *s1, *s2; |
| static int recursive_cnt = 0; /* catch recursive loops */ |
| int r; |
| |
| /* Catch lists and dicts that have an endless loop by limiting |
| * recursiveness to a limit. We guess they are equal then. |
| * A fixed limit has the problem of still taking an awful long time. |
| * Reduce the limit every time running into it. That should work fine for |
| * deeply linked structures that are not recursively linked and catch |
| * recursiveness quickly. */ |
| if (!recursive) |
| tv_equal_recurse_limit = 1000; |
| if (recursive_cnt >= tv_equal_recurse_limit) |
| { |
| --tv_equal_recurse_limit; |
| return TRUE; |
| } |
| |
| /* For VAR_FUNC and VAR_PARTIAL compare the function name, bound dict and |
| * arguments. */ |
| if ((tv1->v_type == VAR_FUNC |
| || (tv1->v_type == VAR_PARTIAL && tv1->vval.v_partial != NULL)) |
| && (tv2->v_type == VAR_FUNC |
| || (tv2->v_type == VAR_PARTIAL && tv2->vval.v_partial != NULL))) |
| { |
| ++recursive_cnt; |
| r = func_equal(tv1, tv2, ic); |
| --recursive_cnt; |
| return r; |
| } |
| |
| if (tv1->v_type != tv2->v_type) |
| return FALSE; |
| |
| switch (tv1->v_type) |
| { |
| case VAR_LIST: |
| ++recursive_cnt; |
| r = list_equal(tv1->vval.v_list, tv2->vval.v_list, ic, TRUE); |
| --recursive_cnt; |
| return r; |
| |
| case VAR_DICT: |
| ++recursive_cnt; |
| r = dict_equal(tv1->vval.v_dict, tv2->vval.v_dict, ic, TRUE); |
| --recursive_cnt; |
| return r; |
| |
| case VAR_NUMBER: |
| return tv1->vval.v_number == tv2->vval.v_number; |
| |
| case VAR_STRING: |
| s1 = get_tv_string_buf(tv1, buf1); |
| s2 = get_tv_string_buf(tv2, buf2); |
| return ((ic ? MB_STRICMP(s1, s2) : STRCMP(s1, s2)) == 0); |
| |
| case VAR_SPECIAL: |
| return tv1->vval.v_number == tv2->vval.v_number; |
| |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| return tv1->vval.v_float == tv2->vval.v_float; |
| #endif |
| case VAR_JOB: |
| #ifdef FEAT_JOB_CHANNEL |
| return tv1->vval.v_job == tv2->vval.v_job; |
| #endif |
| case VAR_CHANNEL: |
| #ifdef FEAT_JOB_CHANNEL |
| return tv1->vval.v_channel == tv2->vval.v_channel; |
| #endif |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| case VAR_UNKNOWN: |
| break; |
| } |
| |
| /* VAR_UNKNOWN can be the result of a invalid expression, let's say it |
| * does not equal anything, not even itself. */ |
| return FALSE; |
| } |
| |
| /* |
| * Return the next (unique) copy ID. |
| * Used for serializing nested structures. |
| */ |
| int |
| get_copyID(void) |
| { |
| current_copyID += COPYID_INC; |
| return current_copyID; |
| } |
| |
| /* |
| * Garbage collection for lists and dictionaries. |
| * |
| * We use reference counts to be able to free most items right away when they |
| * are no longer used. But for composite items it's possible that it becomes |
| * unused while the reference count is > 0: When there is a recursive |
| * reference. Example: |
| * :let l = [1, 2, 3] |
| * :let d = {9: l} |
| * :let l[1] = d |
| * |
| * Since this is quite unusual we handle this with garbage collection: every |
| * once in a while find out which lists and dicts are not referenced from any |
| * variable. |
| * |
| * Here is a good reference text about garbage collection (refers to Python |
| * but it applies to all reference-counting mechanisms): |
| * http://python.ca/nas/python/gc/ |
| */ |
| |
| /* |
| * Do garbage collection for lists and dicts. |
| * When "testing" is TRUE this is called from test_garbagecollect_now(). |
| * Return TRUE if some memory was freed. |
| */ |
| int |
| garbage_collect(int testing) |
| { |
| int copyID; |
| int abort = FALSE; |
| buf_T *buf; |
| win_T *wp; |
| int i; |
| int did_free = FALSE; |
| #ifdef FEAT_WINDOWS |
| tabpage_T *tp; |
| #endif |
| |
| if (!testing) |
| { |
| /* Only do this once. */ |
| want_garbage_collect = FALSE; |
| may_garbage_collect = FALSE; |
| garbage_collect_at_exit = FALSE; |
| } |
| |
| /* We advance by two because we add one for items referenced through |
| * previous_funccal. */ |
| copyID = get_copyID(); |
| |
| /* |
| * 1. Go through all accessible variables and mark all lists and dicts |
| * with copyID. |
| */ |
| |
| /* Don't free variables in the previous_funccal list unless they are only |
| * referenced through previous_funccal. This must be first, because if |
| * the item is referenced elsewhere the funccal must not be freed. */ |
| abort = abort || set_ref_in_previous_funccal(copyID); |
| |
| /* script-local variables */ |
| for (i = 1; i <= ga_scripts.ga_len; ++i) |
| abort = abort || set_ref_in_ht(&SCRIPT_VARS(i), copyID, NULL); |
| |
| /* buffer-local variables */ |
| FOR_ALL_BUFFERS(buf) |
| abort = abort || set_ref_in_item(&buf->b_bufvar.di_tv, copyID, |
| NULL, NULL); |
| |
| /* window-local variables */ |
| FOR_ALL_TAB_WINDOWS(tp, wp) |
| abort = abort || set_ref_in_item(&wp->w_winvar.di_tv, copyID, |
| NULL, NULL); |
| #ifdef FEAT_AUTOCMD |
| if (aucmd_win != NULL) |
| abort = abort || set_ref_in_item(&aucmd_win->w_winvar.di_tv, copyID, |
| NULL, NULL); |
| #endif |
| |
| #ifdef FEAT_WINDOWS |
| /* tabpage-local variables */ |
| FOR_ALL_TABPAGES(tp) |
| abort = abort || set_ref_in_item(&tp->tp_winvar.di_tv, copyID, |
| NULL, NULL); |
| #endif |
| |
| /* global variables */ |
| abort = abort || set_ref_in_ht(&globvarht, copyID, NULL); |
| |
| /* function-local variables */ |
| abort = abort || set_ref_in_call_stack(copyID); |
| |
| /* named functions (matters for closures) */ |
| abort = abort || set_ref_in_functions(copyID); |
| |
| /* function call arguments, if v:testing is set. */ |
| abort = abort || set_ref_in_func_args(copyID); |
| |
| /* v: vars */ |
| abort = abort || set_ref_in_ht(&vimvarht, copyID, NULL); |
| |
| #ifdef FEAT_LUA |
| abort = abort || set_ref_in_lua(copyID); |
| #endif |
| |
| #ifdef FEAT_PYTHON |
| abort = abort || set_ref_in_python(copyID); |
| #endif |
| |
| #ifdef FEAT_PYTHON3 |
| abort = abort || set_ref_in_python3(copyID); |
| #endif |
| |
| #ifdef FEAT_JOB_CHANNEL |
| abort = abort || set_ref_in_channel(copyID); |
| abort = abort || set_ref_in_job(copyID); |
| #endif |
| #ifdef FEAT_NETBEANS_INTG |
| abort = abort || set_ref_in_nb_channel(copyID); |
| #endif |
| |
| #ifdef FEAT_TIMERS |
| abort = abort || set_ref_in_timer(copyID); |
| #endif |
| |
| if (!abort) |
| { |
| /* |
| * 2. Free lists and dictionaries that are not referenced. |
| */ |
| did_free = free_unref_items(copyID); |
| |
| /* |
| * 3. Check if any funccal can be freed now. |
| * This may call us back recursively. |
| */ |
| free_unref_funccal(copyID, testing); |
| } |
| else if (p_verbose > 0) |
| { |
| verb_msg((char_u *)_("Not enough memory to set references, garbage collection aborted!")); |
| } |
| |
| return did_free; |
| } |
| |
| /* |
| * Free lists, dictionaries, channels and jobs that are no longer referenced. |
| */ |
| static int |
| free_unref_items(int copyID) |
| { |
| int did_free = FALSE; |
| |
| /* Let all "free" functions know that we are here. This means no |
| * dictionaries, lists, channels or jobs are to be freed, because we will |
| * do that here. */ |
| in_free_unref_items = TRUE; |
| |
| /* |
| * PASS 1: free the contents of the items. We don't free the items |
| * themselves yet, so that it is possible to decrement refcount counters |
| */ |
| |
| /* Go through the list of dicts and free items without the copyID. */ |
| did_free |= dict_free_nonref(copyID); |
| |
| /* Go through the list of lists and free items without the copyID. */ |
| did_free |= list_free_nonref(copyID); |
| |
| #ifdef FEAT_JOB_CHANNEL |
| /* Go through the list of jobs and free items without the copyID. This |
| * must happen before doing channels, because jobs refer to channels, but |
| * the reference from the channel to the job isn't tracked. */ |
| did_free |= free_unused_jobs_contents(copyID, COPYID_MASK); |
| |
| /* Go through the list of channels and free items without the copyID. */ |
| did_free |= free_unused_channels_contents(copyID, COPYID_MASK); |
| #endif |
| |
| /* |
| * PASS 2: free the items themselves. |
| */ |
| dict_free_items(copyID); |
| list_free_items(copyID); |
| |
| #ifdef FEAT_JOB_CHANNEL |
| /* Go through the list of jobs and free items without the copyID. This |
| * must happen before doing channels, because jobs refer to channels, but |
| * the reference from the channel to the job isn't tracked. */ |
| free_unused_jobs(copyID, COPYID_MASK); |
| |
| /* Go through the list of channels and free items without the copyID. */ |
| free_unused_channels(copyID, COPYID_MASK); |
| #endif |
| |
| in_free_unref_items = FALSE; |
| |
| return did_free; |
| } |
| |
| /* |
| * Mark all lists and dicts referenced through hashtab "ht" with "copyID". |
| * "list_stack" is used to add lists to be marked. Can be NULL. |
| * |
| * Returns TRUE if setting references failed somehow. |
| */ |
| int |
| set_ref_in_ht(hashtab_T *ht, int copyID, list_stack_T **list_stack) |
| { |
| int todo; |
| int abort = FALSE; |
| hashitem_T *hi; |
| hashtab_T *cur_ht; |
| ht_stack_T *ht_stack = NULL; |
| ht_stack_T *tempitem; |
| |
| cur_ht = ht; |
| for (;;) |
| { |
| if (!abort) |
| { |
| /* Mark each item in the hashtab. If the item contains a hashtab |
| * it is added to ht_stack, if it contains a list it is added to |
| * list_stack. */ |
| todo = (int)cur_ht->ht_used; |
| for (hi = cur_ht->ht_array; todo > 0; ++hi) |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| abort = abort || set_ref_in_item(&HI2DI(hi)->di_tv, copyID, |
| &ht_stack, list_stack); |
| } |
| } |
| |
| if (ht_stack == NULL) |
| break; |
| |
| /* take an item from the stack */ |
| cur_ht = ht_stack->ht; |
| tempitem = ht_stack; |
| ht_stack = ht_stack->prev; |
| free(tempitem); |
| } |
| |
| return abort; |
| } |
| |
| /* |
| * Mark all lists and dicts referenced through list "l" with "copyID". |
| * "ht_stack" is used to add hashtabs to be marked. Can be NULL. |
| * |
| * Returns TRUE if setting references failed somehow. |
| */ |
| int |
| set_ref_in_list(list_T *l, int copyID, ht_stack_T **ht_stack) |
| { |
| listitem_T *li; |
| int abort = FALSE; |
| list_T *cur_l; |
| list_stack_T *list_stack = NULL; |
| list_stack_T *tempitem; |
| |
| cur_l = l; |
| for (;;) |
| { |
| if (!abort) |
| /* Mark each item in the list. If the item contains a hashtab |
| * it is added to ht_stack, if it contains a list it is added to |
| * list_stack. */ |
| for (li = cur_l->lv_first; !abort && li != NULL; li = li->li_next) |
| abort = abort || set_ref_in_item(&li->li_tv, copyID, |
| ht_stack, &list_stack); |
| if (list_stack == NULL) |
| break; |
| |
| /* take an item from the stack */ |
| cur_l = list_stack->list; |
| tempitem = list_stack; |
| list_stack = list_stack->prev; |
| free(tempitem); |
| } |
| |
| return abort; |
| } |
| |
| /* |
| * Mark all lists and dicts referenced through typval "tv" with "copyID". |
| * "list_stack" is used to add lists to be marked. Can be NULL. |
| * "ht_stack" is used to add hashtabs to be marked. Can be NULL. |
| * |
| * Returns TRUE if setting references failed somehow. |
| */ |
| int |
| set_ref_in_item( |
| typval_T *tv, |
| int copyID, |
| ht_stack_T **ht_stack, |
| list_stack_T **list_stack) |
| { |
| int abort = FALSE; |
| |
| if (tv->v_type == VAR_DICT) |
| { |
| dict_T *dd = tv->vval.v_dict; |
| |
| if (dd != NULL && dd->dv_copyID != copyID) |
| { |
| /* Didn't see this dict yet. */ |
| dd->dv_copyID = copyID; |
| if (ht_stack == NULL) |
| { |
| abort = set_ref_in_ht(&dd->dv_hashtab, copyID, list_stack); |
| } |
| else |
| { |
| ht_stack_T *newitem = (ht_stack_T*)malloc(sizeof(ht_stack_T)); |
| if (newitem == NULL) |
| abort = TRUE; |
| else |
| { |
| newitem->ht = &dd->dv_hashtab; |
| newitem->prev = *ht_stack; |
| *ht_stack = newitem; |
| } |
| } |
| } |
| } |
| else if (tv->v_type == VAR_LIST) |
| { |
| list_T *ll = tv->vval.v_list; |
| |
| if (ll != NULL && ll->lv_copyID != copyID) |
| { |
| /* Didn't see this list yet. */ |
| ll->lv_copyID = copyID; |
| if (list_stack == NULL) |
| { |
| abort = set_ref_in_list(ll, copyID, ht_stack); |
| } |
| else |
| { |
| list_stack_T *newitem = (list_stack_T*)malloc( |
| sizeof(list_stack_T)); |
| if (newitem == NULL) |
| abort = TRUE; |
| else |
| { |
| newitem->list = ll; |
| newitem->prev = *list_stack; |
| *list_stack = newitem; |
| } |
| } |
| } |
| } |
| else if (tv->v_type == VAR_FUNC) |
| { |
| abort = set_ref_in_func(tv->vval.v_string, NULL, copyID); |
| } |
| else if (tv->v_type == VAR_PARTIAL) |
| { |
| partial_T *pt = tv->vval.v_partial; |
| int i; |
| |
| /* A partial does not have a copyID, because it cannot contain itself. |
| */ |
| if (pt != NULL) |
| { |
| abort = set_ref_in_func(pt->pt_name, pt->pt_func, copyID); |
| |
| if (pt->pt_dict != NULL) |
| { |
| typval_T dtv; |
| |
| dtv.v_type = VAR_DICT; |
| dtv.vval.v_dict = pt->pt_dict; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| |
| for (i = 0; i < pt->pt_argc; ++i) |
| abort = abort || set_ref_in_item(&pt->pt_argv[i], copyID, |
| ht_stack, list_stack); |
| } |
| } |
| #ifdef FEAT_JOB_CHANNEL |
| else if (tv->v_type == VAR_JOB) |
| { |
| job_T *job = tv->vval.v_job; |
| typval_T dtv; |
| |
| if (job != NULL && job->jv_copyID != copyID) |
| { |
| job->jv_copyID = copyID; |
| if (job->jv_channel != NULL) |
| { |
| dtv.v_type = VAR_CHANNEL; |
| dtv.vval.v_channel = job->jv_channel; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| if (job->jv_exit_partial != NULL) |
| { |
| dtv.v_type = VAR_PARTIAL; |
| dtv.vval.v_partial = job->jv_exit_partial; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| } |
| } |
| else if (tv->v_type == VAR_CHANNEL) |
| { |
| channel_T *ch =tv->vval.v_channel; |
| int part; |
| typval_T dtv; |
| jsonq_T *jq; |
| cbq_T *cq; |
| |
| if (ch != NULL && ch->ch_copyID != copyID) |
| { |
| ch->ch_copyID = copyID; |
| for (part = PART_SOCK; part <= PART_IN; ++part) |
| { |
| for (jq = ch->ch_part[part].ch_json_head.jq_next; jq != NULL; |
| jq = jq->jq_next) |
| set_ref_in_item(jq->jq_value, copyID, ht_stack, list_stack); |
| for (cq = ch->ch_part[part].ch_cb_head.cq_next; cq != NULL; |
| cq = cq->cq_next) |
| if (cq->cq_partial != NULL) |
| { |
| dtv.v_type = VAR_PARTIAL; |
| dtv.vval.v_partial = cq->cq_partial; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| if (ch->ch_part[part].ch_partial != NULL) |
| { |
| dtv.v_type = VAR_PARTIAL; |
| dtv.vval.v_partial = ch->ch_part[part].ch_partial; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| } |
| if (ch->ch_partial != NULL) |
| { |
| dtv.v_type = VAR_PARTIAL; |
| dtv.vval.v_partial = ch->ch_partial; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| if (ch->ch_close_partial != NULL) |
| { |
| dtv.v_type = VAR_PARTIAL; |
| dtv.vval.v_partial = ch->ch_close_partial; |
| set_ref_in_item(&dtv, copyID, ht_stack, list_stack); |
| } |
| } |
| } |
| #endif |
| return abort; |
| } |
| |
| static char * |
| get_var_special_name(int nr) |
| { |
| switch (nr) |
| { |
| case VVAL_FALSE: return "v:false"; |
| case VVAL_TRUE: return "v:true"; |
| case VVAL_NONE: return "v:none"; |
| case VVAL_NULL: return "v:null"; |
| } |
| EMSG2(_(e_intern2), "get_var_special_name()"); |
| return "42"; |
| } |
| |
| /* |
| * Return a string with the string representation of a variable. |
| * If the memory is allocated "tofree" is set to it, otherwise NULL. |
| * "numbuf" is used for a number. |
| * When "copyID" is not NULL replace recursive lists and dicts with "...". |
| * When both "echo_style" and "dict_val" are FALSE, put quotes around stings as |
| * "string()", otherwise does not put quotes around strings, as ":echo" |
| * displays values. |
| * When "restore_copyID" is FALSE, repeated items in dictionaries and lists |
| * are replaced with "...". |
| * May return NULL. |
| */ |
| char_u * |
| echo_string_core( |
| typval_T *tv, |
| char_u **tofree, |
| char_u *numbuf, |
| int copyID, |
| int echo_style, |
| int restore_copyID, |
| int dict_val) |
| { |
| static int recurse = 0; |
| char_u *r = NULL; |
| |
| if (recurse >= DICT_MAXNEST) |
| { |
| if (!did_echo_string_emsg) |
| { |
| /* Only give this message once for a recursive call to avoid |
| * flooding the user with errors. And stop iterating over lists |
| * and dicts. */ |
| did_echo_string_emsg = TRUE; |
| EMSG(_("E724: variable nested too deep for displaying")); |
| } |
| *tofree = NULL; |
| return (char_u *)"{E724}"; |
| } |
| ++recurse; |
| |
| switch (tv->v_type) |
| { |
| case VAR_STRING: |
| if (echo_style && !dict_val) |
| { |
| *tofree = NULL; |
| r = get_tv_string_buf(tv, numbuf); |
| } |
| else |
| { |
| *tofree = string_quote(tv->vval.v_string, FALSE); |
| r = *tofree; |
| } |
| break; |
| |
| case VAR_FUNC: |
| if (echo_style) |
| { |
| *tofree = NULL; |
| r = tv->vval.v_string; |
| } |
| else |
| { |
| *tofree = string_quote(tv->vval.v_string, TRUE); |
| r = *tofree; |
| } |
| break; |
| |
| case VAR_PARTIAL: |
| { |
| partial_T *pt = tv->vval.v_partial; |
| char_u *fname = string_quote(pt == NULL ? NULL |
| : partial_name(pt), FALSE); |
| garray_T ga; |
| int i; |
| char_u *tf; |
| |
| ga_init2(&ga, 1, 100); |
| ga_concat(&ga, (char_u *)"function("); |
| if (fname != NULL) |
| { |
| ga_concat(&ga, fname); |
| vim_free(fname); |
| } |
| if (pt != NULL && pt->pt_argc > 0) |
| { |
| ga_concat(&ga, (char_u *)", ["); |
| for (i = 0; i < pt->pt_argc; ++i) |
| { |
| if (i > 0) |
| ga_concat(&ga, (char_u *)", "); |
| ga_concat(&ga, |
| tv2string(&pt->pt_argv[i], &tf, numbuf, copyID)); |
| vim_free(tf); |
| } |
| ga_concat(&ga, (char_u *)"]"); |
| } |
| if (pt != NULL && pt->pt_dict != NULL) |
| { |
| typval_T dtv; |
| |
| ga_concat(&ga, (char_u *)", "); |
| dtv.v_type = VAR_DICT; |
| dtv.vval.v_dict = pt->pt_dict; |
| ga_concat(&ga, tv2string(&dtv, &tf, numbuf, copyID)); |
| vim_free(tf); |
| } |
| ga_concat(&ga, (char_u *)")"); |
| |
| *tofree = ga.ga_data; |
| r = *tofree; |
| break; |
| } |
| |
| case VAR_LIST: |
| if (tv->vval.v_list == NULL) |
| { |
| *tofree = NULL; |
| r = NULL; |
| } |
| else if (copyID != 0 && tv->vval.v_list->lv_copyID == copyID |
| && tv->vval.v_list->lv_len > 0) |
| { |
| *tofree = NULL; |
| r = (char_u *)"[...]"; |
| } |
| else |
| { |
| int old_copyID = tv->vval.v_list->lv_copyID; |
| |
| tv->vval.v_list->lv_copyID = copyID; |
| *tofree = list2string(tv, copyID, restore_copyID); |
| if (restore_copyID) |
| tv->vval.v_list->lv_copyID = old_copyID; |
| r = *tofree; |
| } |
| break; |
| |
| case VAR_DICT: |
| if (tv->vval.v_dict == NULL) |
| { |
| *tofree = NULL; |
| r = NULL; |
| } |
| else if (copyID != 0 && tv->vval.v_dict->dv_copyID == copyID |
| && tv->vval.v_dict->dv_hashtab.ht_used != 0) |
| { |
| *tofree = NULL; |
| r = (char_u *)"{...}"; |
| } |
| else |
| { |
| int old_copyID = tv->vval.v_dict->dv_copyID; |
| tv->vval.v_dict->dv_copyID = copyID; |
| *tofree = dict2string(tv, copyID, restore_copyID); |
| if (restore_copyID) |
| tv->vval.v_dict->dv_copyID = old_copyID; |
| r = *tofree; |
| } |
| break; |
| |
| case VAR_NUMBER: |
| case VAR_UNKNOWN: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| *tofree = NULL; |
| r = get_tv_string_buf(tv, numbuf); |
| break; |
| |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| *tofree = NULL; |
| vim_snprintf((char *)numbuf, NUMBUFLEN, "%g", tv->vval.v_float); |
| r = numbuf; |
| break; |
| #endif |
| |
| case VAR_SPECIAL: |
| *tofree = NULL; |
| r = (char_u *)get_var_special_name(tv->vval.v_number); |
| break; |
| } |
| |
| if (--recurse == 0) |
| did_echo_string_emsg = FALSE; |
| return r; |
| } |
| |
| /* |
| * Return a string with the string representation of a variable. |
| * If the memory is allocated "tofree" is set to it, otherwise NULL. |
| * "numbuf" is used for a number. |
| * Does not put quotes around strings, as ":echo" displays values. |
| * When "copyID" is not NULL replace recursive lists and dicts with "...". |
| * May return NULL. |
| */ |
| char_u * |
| echo_string( |
| typval_T *tv, |
| char_u **tofree, |
| char_u *numbuf, |
| int copyID) |
| { |
| return echo_string_core(tv, tofree, numbuf, copyID, TRUE, FALSE, FALSE); |
| } |
| |
| /* |
| * Return a string with the string representation of a variable. |
| * If the memory is allocated "tofree" is set to it, otherwise NULL. |
| * "numbuf" is used for a number. |
| * Puts quotes around strings, so that they can be parsed back by eval(). |
| * May return NULL. |
| */ |
| char_u * |
| tv2string( |
| typval_T *tv, |
| char_u **tofree, |
| char_u *numbuf, |
| int copyID) |
| { |
| return echo_string_core(tv, tofree, numbuf, copyID, FALSE, TRUE, FALSE); |
| } |
| |
| /* |
| * Return string "str" in ' quotes, doubling ' characters. |
| * If "str" is NULL an empty string is assumed. |
| * If "function" is TRUE make it function('string'). |
| */ |
| char_u * |
| string_quote(char_u *str, int function) |
| { |
| unsigned len; |
| char_u *p, *r, *s; |
| |
| len = (function ? 13 : 3); |
| if (str != NULL) |
| { |
| len += (unsigned)STRLEN(str); |
| for (p = str; *p != NUL; mb_ptr_adv(p)) |
| if (*p == '\'') |
| ++len; |
| } |
| s = r = alloc(len); |
| if (r != NULL) |
| { |
| if (function) |
| { |
| STRCPY(r, "function('"); |
| r += 10; |
| } |
| else |
| *r++ = '\''; |
| if (str != NULL) |
| for (p = str; *p != NUL; ) |
| { |
| if (*p == '\'') |
| *r++ = '\''; |
| MB_COPY_CHAR(p, r); |
| } |
| *r++ = '\''; |
| if (function) |
| *r++ = ')'; |
| *r++ = NUL; |
| } |
| return s; |
| } |
| |
| #if defined(FEAT_FLOAT) || defined(PROTO) |
| /* |
| * Convert the string "text" to a floating point number. |
| * This uses strtod(). setlocale(LC_NUMERIC, "C") has been used to make sure |
| * this always uses a decimal point. |
| * Returns the length of the text that was consumed. |
| */ |
| int |
| string2float( |
| char_u *text, |
| float_T *value) /* result stored here */ |
| { |
| char *s = (char *)text; |
| float_T f; |
| |
| f = strtod(s, &s); |
| *value = f; |
| return (int)((char_u *)s - text); |
| } |
| #endif |
| |
| /* |
| * Get the value of an environment variable. |
| * "arg" is pointing to the '$'. It is advanced to after the name. |
| * If the environment variable was not set, silently assume it is empty. |
| * Return FAIL if the name is invalid. |
| */ |
| static int |
| get_env_tv(char_u **arg, typval_T *rettv, int evaluate) |
| { |
| char_u *string = NULL; |
| int len; |
| int cc; |
| char_u *name; |
| int mustfree = FALSE; |
| |
| ++*arg; |
| name = *arg; |
| len = get_env_len(arg); |
| if (evaluate) |
| { |
| if (len == 0) |
| return FAIL; /* invalid empty name */ |
| |
| cc = name[len]; |
| name[len] = NUL; |
| /* first try vim_getenv(), fast for normal environment vars */ |
| string = vim_getenv(name, &mustfree); |
| if (string != NULL && *string != NUL) |
| { |
| if (!mustfree) |
| string = vim_strsave(string); |
| } |
| else |
| { |
| if (mustfree) |
| vim_free(string); |
| |
| /* next try expanding things like $VIM and ${HOME} */ |
| string = expand_env_save(name - 1); |
| if (string != NULL && *string == '$') |
| { |
| vim_free(string); |
| string = NULL; |
| } |
| } |
| name[len] = cc; |
| |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = string; |
| } |
| |
| return OK; |
| } |
| |
| |
| |
| /* |
| * Translate a String variable into a position. |
| * Returns NULL when there is an error. |
| */ |
| pos_T * |
| var2fpos( |
| typval_T *varp, |
| int dollar_lnum, /* TRUE when $ is last line */ |
| int *fnum) /* set to fnum for '0, 'A, etc. */ |
| { |
| char_u *name; |
| static pos_T pos; |
| pos_T *pp; |
| |
| /* Argument can be [lnum, col, coladd]. */ |
| if (varp->v_type == VAR_LIST) |
| { |
| list_T *l; |
| int len; |
| int error = FALSE; |
| listitem_T *li; |
| |
| l = varp->vval.v_list; |
| if (l == NULL) |
| return NULL; |
| |
| /* Get the line number */ |
| pos.lnum = list_find_nr(l, 0L, &error); |
| if (error || pos.lnum <= 0 || pos.lnum > curbuf->b_ml.ml_line_count) |
| return NULL; /* invalid line number */ |
| |
| /* Get the column number */ |
| pos.col = list_find_nr(l, 1L, &error); |
| if (error) |
| return NULL; |
| len = (long)STRLEN(ml_get(pos.lnum)); |
| |
| /* We accept "$" for the column number: last column. */ |
| li = list_find(l, 1L); |
| if (li != NULL && li->li_tv.v_type == VAR_STRING |
| && li->li_tv.vval.v_string != NULL |
| && STRCMP(li->li_tv.vval.v_string, "$") == 0) |
| pos.col = len + 1; |
| |
| /* Accept a position up to the NUL after the line. */ |
| if (pos.col == 0 || (int)pos.col > len + 1) |
| return NULL; /* invalid column number */ |
| --pos.col; |
| |
| #ifdef FEAT_VIRTUALEDIT |
| /* Get the virtual offset. Defaults to zero. */ |
| pos.coladd = list_find_nr(l, 2L, &error); |
| if (error) |
| pos.coladd = 0; |
| #endif |
| |
| return &pos; |
| } |
| |
| name = get_tv_string_chk(varp); |
| if (name == NULL) |
| return NULL; |
| if (name[0] == '.') /* cursor */ |
| return &curwin->w_cursor; |
| if (name[0] == 'v' && name[1] == NUL) /* Visual start */ |
| { |
| if (VIsual_active) |
| return &VIsual; |
| return &curwin->w_cursor; |
| } |
| if (name[0] == '\'') /* mark */ |
| { |
| pp = getmark_buf_fnum(curbuf, name[1], FALSE, fnum); |
| if (pp == NULL || pp == (pos_T *)-1 || pp->lnum <= 0) |
| return NULL; |
| return pp; |
| } |
| |
| #ifdef FEAT_VIRTUALEDIT |
| pos.coladd = 0; |
| #endif |
| |
| if (name[0] == 'w' && dollar_lnum) |
| { |
| pos.col = 0; |
| if (name[1] == '0') /* "w0": first visible line */ |
| { |
| update_topline(); |
| pos.lnum = curwin->w_topline; |
| return &pos; |
| } |
| else if (name[1] == '$') /* "w$": last visible line */ |
| { |
| validate_botline(); |
| pos.lnum = curwin->w_botline - 1; |
| return &pos; |
| } |
| } |
| else if (name[0] == '$') /* last column or line */ |
| { |
| if (dollar_lnum) |
| { |
| pos.lnum = curbuf->b_ml.ml_line_count; |
| pos.col = 0; |
| } |
| else |
| { |
| pos.lnum = curwin->w_cursor.lnum; |
| pos.col = (colnr_T)STRLEN(ml_get_curline()); |
| } |
| return &pos; |
| } |
| return NULL; |
| } |
| |
| /* |
| * Convert list in "arg" into a position and optional file number. |
| * When "fnump" is NULL there is no file number, only 3 items. |
| * Note that the column is passed on as-is, the caller may want to decrement |
| * it to use 1 for the first column. |
| * Return FAIL when conversion is not possible, doesn't check the position for |
| * validity. |
| */ |
| int |
| list2fpos( |
| typval_T *arg, |
| pos_T *posp, |
| int *fnump, |
| colnr_T *curswantp) |
| { |
| list_T *l = arg->vval.v_list; |
| long i = 0; |
| long n; |
| |
| /* List must be: [fnum, lnum, col, coladd, curswant], where "fnum" is only |
| * there when "fnump" isn't NULL; "coladd" and "curswant" are optional. */ |
| if (arg->v_type != VAR_LIST |
| || l == NULL |
| || l->lv_len < (fnump == NULL ? 2 : 3) |
| || l->lv_len > (fnump == NULL ? 4 : 5)) |
| return FAIL; |
| |
| if (fnump != NULL) |
| { |
| n = list_find_nr(l, i++, NULL); /* fnum */ |
| if (n < 0) |
| return FAIL; |
| if (n == 0) |
| n = curbuf->b_fnum; /* current buffer */ |
| *fnump = n; |
| } |
| |
| n = list_find_nr(l, i++, NULL); /* lnum */ |
| if (n < 0) |
| return FAIL; |
| posp->lnum = n; |
| |
| n = list_find_nr(l, i++, NULL); /* col */ |
| if (n < 0) |
| return FAIL; |
| posp->col = n; |
| |
| #ifdef FEAT_VIRTUALEDIT |
| n = list_find_nr(l, i, NULL); /* off */ |
| if (n < 0) |
| posp->coladd = 0; |
| else |
| posp->coladd = n; |
| #endif |
| |
| if (curswantp != NULL) |
| *curswantp = list_find_nr(l, i + 1, NULL); /* curswant */ |
| |
| return OK; |
| } |
| |
| /* |
| * Get the length of an environment variable name. |
| * Advance "arg" to the first character after the name. |
| * Return 0 for error. |
| */ |
| static int |
| get_env_len(char_u **arg) |
| { |
| char_u *p; |
| int len; |
| |
| for (p = *arg; vim_isIDc(*p); ++p) |
| ; |
| if (p == *arg) /* no name found */ |
| return 0; |
| |
| len = (int)(p - *arg); |
| *arg = p; |
| return len; |
| } |
| |
| /* |
| * Get the length of the name of a function or internal variable. |
| * "arg" is advanced to the first non-white character after the name. |
| * Return 0 if something is wrong. |
| */ |
| int |
| get_id_len(char_u **arg) |
| { |
| char_u *p; |
| int len; |
| |
| /* Find the end of the name. */ |
| for (p = *arg; eval_isnamec(*p); ++p) |
| { |
| if (*p == ':') |
| { |
| /* "s:" is start of "s:var", but "n:" is not and can be used in |
| * slice "[n:]". Also "xx:" is not a namespace. */ |
| len = (int)(p - *arg); |
| if ((len == 1 && vim_strchr(NAMESPACE_CHAR, **arg) == NULL) |
| || len > 1) |
| break; |
| } |
| } |
| if (p == *arg) /* no name found */ |
| return 0; |
| |
| len = (int)(p - *arg); |
| *arg = skipwhite(p); |
| |
| return len; |
| } |
| |
| /* |
| * Get the length of the name of a variable or function. |
| * Only the name is recognized, does not handle ".key" or "[idx]". |
| * "arg" is advanced to the first non-white character after the name. |
| * Return -1 if curly braces expansion failed. |
| * Return 0 if something else is wrong. |
| * If the name contains 'magic' {}'s, expand them and return the |
| * expanded name in an allocated string via 'alias' - caller must free. |
| */ |
| int |
| get_name_len( |
| char_u **arg, |
| char_u **alias, |
| int evaluate, |
| int verbose) |
| { |
| int len; |
| char_u *p; |
| char_u *expr_start; |
| char_u *expr_end; |
| |
| *alias = NULL; /* default to no alias */ |
| |
| if ((*arg)[0] == K_SPECIAL && (*arg)[1] == KS_EXTRA |
| && (*arg)[2] == (int)KE_SNR) |
| { |
| /* hard coded <SNR>, already translated */ |
| *arg += 3; |
| return get_id_len(arg) + 3; |
| } |
| len = eval_fname_script(*arg); |
| if (len > 0) |
| { |
| /* literal "<SID>", "s:" or "<SNR>" */ |
| *arg += len; |
| } |
| |
| /* |
| * Find the end of the name; check for {} construction. |
| */ |
| p = find_name_end(*arg, &expr_start, &expr_end, |
| len > 0 ? 0 : FNE_CHECK_START); |
| if (expr_start != NULL) |
| { |
| char_u *temp_string; |
| |
| if (!evaluate) |
| { |
| len += (int)(p - *arg); |
| *arg = skipwhite(p); |
| return len; |
| } |
| |
| /* |
| * Include any <SID> etc in the expanded string: |
| * Thus the -len here. |
| */ |
| temp_string = make_expanded_name(*arg - len, expr_start, expr_end, p); |
| if (temp_string == NULL) |
| return -1; |
| *alias = temp_string; |
| *arg = skipwhite(p); |
| return (int)STRLEN(temp_string); |
| } |
| |
| len += get_id_len(arg); |
| if (len == 0 && verbose) |
| EMSG2(_(e_invexpr2), *arg); |
| |
| return len; |
| } |
| |
| /* |
| * Find the end of a variable or function name, taking care of magic braces. |
| * If "expr_start" is not NULL then "expr_start" and "expr_end" are set to the |
| * start and end of the first magic braces item. |
| * "flags" can have FNE_INCL_BR and FNE_CHECK_START. |
| * Return a pointer to just after the name. Equal to "arg" if there is no |
| * valid name. |
| */ |
| char_u * |
| find_name_end( |
| char_u *arg, |
| char_u **expr_start, |
| char_u **expr_end, |
| int flags) |
| { |
| int mb_nest = 0; |
| int br_nest = 0; |
| char_u *p; |
| int len; |
| |
| if (expr_start != NULL) |
| { |
| *expr_start = NULL; |
| *expr_end = NULL; |
| } |
| |
| /* Quick check for valid starting character. */ |
| if ((flags & FNE_CHECK_START) && !eval_isnamec1(*arg) && *arg != '{') |
| return arg; |
| |
| for (p = arg; *p != NUL |
| && (eval_isnamec(*p) |
| || *p == '{' |
| || ((flags & FNE_INCL_BR) && (*p == '[' || *p == '.')) |
| || mb_nest != 0 |
| || br_nest != 0); mb_ptr_adv(p)) |
| { |
| if (*p == '\'') |
| { |
| /* skip over 'string' to avoid counting [ and ] inside it. */ |
| for (p = p + 1; *p != NUL && *p != '\''; mb_ptr_adv(p)) |
| ; |
| if (*p == NUL) |
| break; |
| } |
| else if (*p == '"') |
| { |
| /* skip over "str\"ing" to avoid counting [ and ] inside it. */ |
| for (p = p + 1; *p != NUL && *p != '"'; mb_ptr_adv(p)) |
| if (*p == '\\' && p[1] != NUL) |
| ++p; |
| if (*p == NUL) |
| break; |
| } |
| else if (br_nest == 0 && mb_nest == 0 && *p == ':') |
| { |
| /* "s:" is start of "s:var", but "n:" is not and can be used in |
| * slice "[n:]". Also "xx:" is not a namespace. But {ns}: is. */ |
| len = (int)(p - arg); |
| if ((len == 1 && vim_strchr(NAMESPACE_CHAR, *arg) == NULL) |
| || (len > 1 && p[-1] != '}')) |
| break; |
| } |
| |
| if (mb_nest == 0) |
| { |
| if (*p == '[') |
| ++br_nest; |
| else if (*p == ']') |
| --br_nest; |
| } |
| |
| if (br_nest == 0) |
| { |
| if (*p == '{') |
| { |
| mb_nest++; |
| if (expr_start != NULL && *expr_start == NULL) |
| *expr_start = p; |
| } |
| else if (*p == '}') |
| { |
| mb_nest--; |
| if (expr_start != NULL && mb_nest == 0 && *expr_end == NULL) |
| *expr_end = p; |
| } |
| } |
| } |
| |
| return p; |
| } |
| |
| /* |
| * Expands out the 'magic' {}'s in a variable/function name. |
| * Note that this can call itself recursively, to deal with |
| * constructs like foo{bar}{baz}{bam} |
| * The four pointer arguments point to "foo{expre}ss{ion}bar" |
| * "in_start" ^ |
| * "expr_start" ^ |
| * "expr_end" ^ |
| * "in_end" ^ |
| * |
| * Returns a new allocated string, which the caller must free. |
| * Returns NULL for failure. |
| */ |
| static char_u * |
| make_expanded_name( |
| char_u *in_start, |
| char_u *expr_start, |
| char_u *expr_end, |
| char_u *in_end) |
| { |
| char_u c1; |
| char_u *retval = NULL; |
| char_u *temp_result; |
| char_u *nextcmd = NULL; |
| |
| if (expr_end == NULL || in_end == NULL) |
| return NULL; |
| *expr_start = NUL; |
| *expr_end = NUL; |
| c1 = *in_end; |
| *in_end = NUL; |
| |
| temp_result = eval_to_string(expr_start + 1, &nextcmd, FALSE); |
| if (temp_result != NULL && nextcmd == NULL) |
| { |
| retval = alloc((unsigned)(STRLEN(temp_result) + (expr_start - in_start) |
| + (in_end - expr_end) + 1)); |
| if (retval != NULL) |
| { |
| STRCPY(retval, in_start); |
| STRCAT(retval, temp_result); |
| STRCAT(retval, expr_end + 1); |
| } |
| } |
| vim_free(temp_result); |
| |
| *in_end = c1; /* put char back for error messages */ |
| *expr_start = '{'; |
| *expr_end = '}'; |
| |
| if (retval != NULL) |
| { |
| temp_result = find_name_end(retval, &expr_start, &expr_end, 0); |
| if (expr_start != NULL) |
| { |
| /* Further expansion! */ |
| temp_result = make_expanded_name(retval, expr_start, |
| expr_end, temp_result); |
| vim_free(retval); |
| retval = temp_result; |
| } |
| } |
| |
| return retval; |
| } |
| |
| /* |
| * Return TRUE if character "c" can be used in a variable or function name. |
| * Does not include '{' or '}' for magic braces. |
| */ |
| int |
| eval_isnamec(int c) |
| { |
| return (ASCII_ISALNUM(c) || c == '_' || c == ':' || c == AUTOLOAD_CHAR); |
| } |
| |
| /* |
| * Return TRUE if character "c" can be used as the first character in a |
| * variable or function name (excluding '{' and '}'). |
| */ |
| int |
| eval_isnamec1(int c) |
| { |
| return (ASCII_ISALPHA(c) || c == '_'); |
| } |
| |
| /* |
| * Set number v: variable to "val". |
| */ |
| void |
| set_vim_var_nr(int idx, varnumber_T val) |
| { |
| vimvars[idx].vv_nr = val; |
| } |
| |
| /* |
| * Get number v: variable value. |
| */ |
| varnumber_T |
| get_vim_var_nr(int idx) |
| { |
| return vimvars[idx].vv_nr; |
| } |
| |
| /* |
| * Get string v: variable value. Uses a static buffer, can only be used once. |
| */ |
| char_u * |
| get_vim_var_str(int idx) |
| { |
| return get_tv_string(&vimvars[idx].vv_tv); |
| } |
| |
| /* |
| * Get List v: variable value. Caller must take care of reference count when |
| * needed. |
| */ |
| list_T * |
| get_vim_var_list(int idx) |
| { |
| return vimvars[idx].vv_list; |
| } |
| |
| /* |
| * Set v:char to character "c". |
| */ |
| void |
| set_vim_var_char(int c) |
| { |
| char_u buf[MB_MAXBYTES + 1]; |
| |
| #ifdef FEAT_MBYTE |
| if (has_mbyte) |
| buf[(*mb_char2bytes)(c, buf)] = NUL; |
| else |
| #endif |
| { |
| buf[0] = c; |
| buf[1] = NUL; |
| } |
| set_vim_var_string(VV_CHAR, buf, -1); |
| } |
| |
| /* |
| * Set v:count to "count" and v:count1 to "count1". |
| * When "set_prevcount" is TRUE first set v:prevcount from v:count. |
| */ |
| void |
| set_vcount( |
| long count, |
| long count1, |
| int set_prevcount) |
| { |
| if (set_prevcount) |
| vimvars[VV_PREVCOUNT].vv_nr = vimvars[VV_COUNT].vv_nr; |
| vimvars[VV_COUNT].vv_nr = count; |
| vimvars[VV_COUNT1].vv_nr = count1; |
| } |
| |
| /* |
| * Set string v: variable to a copy of "val". |
| */ |
| void |
| set_vim_var_string( |
| int idx, |
| char_u *val, |
| int len) /* length of "val" to use or -1 (whole string) */ |
| { |
| clear_tv(&vimvars[idx].vv_di.di_tv); |
| vimvars[idx].vv_type = VAR_STRING; |
| if (val == NULL) |
| vimvars[idx].vv_str = NULL; |
| else if (len == -1) |
| vimvars[idx].vv_str = vim_strsave(val); |
| else |
| vimvars[idx].vv_str = vim_strnsave(val, len); |
| } |
| |
| /* |
| * Set List v: variable to "val". |
| */ |
| void |
| set_vim_var_list(int idx, list_T *val) |
| { |
| clear_tv(&vimvars[idx].vv_di.di_tv); |
| vimvars[idx].vv_type = VAR_LIST; |
| vimvars[idx].vv_list = val; |
| if (val != NULL) |
| ++val->lv_refcount; |
| } |
| |
| /* |
| * Set Dictionary v: variable to "val". |
| */ |
| void |
| set_vim_var_dict(int idx, dict_T *val) |
| { |
| int todo; |
| hashitem_T *hi; |
| |
| clear_tv(&vimvars[idx].vv_di.di_tv); |
| vimvars[idx].vv_type = VAR_DICT; |
| vimvars[idx].vv_dict = val; |
| if (val != NULL) |
| { |
| ++val->dv_refcount; |
| |
| /* Set readonly */ |
| todo = (int)val->dv_hashtab.ht_used; |
| for (hi = val->dv_hashtab.ht_array; todo > 0 ; ++hi) |
| { |
| if (HASHITEM_EMPTY(hi)) |
| continue; |
| --todo; |
| HI2DI(hi)->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX; |
| } |
| } |
| } |
| |
| /* |
| * Set v:register if needed. |
| */ |
| void |
| set_reg_var(int c) |
| { |
| char_u regname; |
| |
| if (c == 0 || c == ' ') |
| regname = '"'; |
| else |
| regname = c; |
| /* Avoid free/alloc when the value is already right. */ |
| if (vimvars[VV_REG].vv_str == NULL || vimvars[VV_REG].vv_str[0] != c) |
| set_vim_var_string(VV_REG, ®name, 1); |
| } |
| |
| /* |
| * Get or set v:exception. If "oldval" == NULL, return the current value. |
| * Otherwise, restore the value to "oldval" and return NULL. |
| * Must always be called in pairs to save and restore v:exception! Does not |
| * take care of memory allocations. |
| */ |
| char_u * |
| v_exception(char_u *oldval) |
| { |
| if (oldval == NULL) |
| return vimvars[VV_EXCEPTION].vv_str; |
| |
| vimvars[VV_EXCEPTION].vv_str = oldval; |
| return NULL; |
| } |
| |
| /* |
| * Get or set v:throwpoint. If "oldval" == NULL, return the current value. |
| * Otherwise, restore the value to "oldval" and return NULL. |
| * Must always be called in pairs to save and restore v:throwpoint! Does not |
| * take care of memory allocations. |
| */ |
| char_u * |
| v_throwpoint(char_u *oldval) |
| { |
| if (oldval == NULL) |
| return vimvars[VV_THROWPOINT].vv_str; |
| |
| vimvars[VV_THROWPOINT].vv_str = oldval; |
| return NULL; |
| } |
| |
| #if defined(FEAT_AUTOCMD) || defined(PROTO) |
| /* |
| * Set v:cmdarg. |
| * If "eap" != NULL, use "eap" to generate the value and return the old value. |
| * If "oldarg" != NULL, restore the value to "oldarg" and return NULL. |
| * Must always be called in pairs! |
| */ |
| char_u * |
| set_cmdarg(exarg_T *eap, char_u *oldarg) |
| { |
| char_u *oldval; |
| char_u *newval; |
| unsigned len; |
| |
| oldval = vimvars[VV_CMDARG].vv_str; |
| if (eap == NULL) |
| { |
| vim_free(oldval); |
| vimvars[VV_CMDARG].vv_str = oldarg; |
| return NULL; |
| } |
| |
| if (eap->force_bin == FORCE_BIN) |
| len = 6; |
| else if (eap->force_bin == FORCE_NOBIN) |
| len = 8; |
| else |
| len = 0; |
| |
| if (eap->read_edit) |
| len += 7; |
| |
| if (eap->force_ff != 0) |
| len += (unsigned)STRLEN(eap->cmd + eap->force_ff) + 6; |
| # ifdef FEAT_MBYTE |
| if (eap->force_enc != 0) |
| len += (unsigned)STRLEN(eap->cmd + eap->force_enc) + 7; |
| if (eap->bad_char != 0) |
| len += 7 + 4; /* " ++bad=" + "keep" or "drop" */ |
| # endif |
| |
| newval = alloc(len + 1); |
| if (newval == NULL) |
| return NULL; |
| |
| if (eap->force_bin == FORCE_BIN) |
| sprintf((char *)newval, " ++bin"); |
| else if (eap->force_bin == FORCE_NOBIN) |
| sprintf((char *)newval, " ++nobin"); |
| else |
| *newval = NUL; |
| |
| if (eap->read_edit) |
| STRCAT(newval, " ++edit"); |
| |
| if (eap->force_ff != 0) |
| sprintf((char *)newval + STRLEN(newval), " ++ff=%s", |
| eap->cmd + eap->force_ff); |
| # ifdef FEAT_MBYTE |
| if (eap->force_enc != 0) |
| sprintf((char *)newval + STRLEN(newval), " ++enc=%s", |
| eap->cmd + eap->force_enc); |
| if (eap->bad_char == BAD_KEEP) |
| STRCPY(newval + STRLEN(newval), " ++bad=keep"); |
| else if (eap->bad_char == BAD_DROP) |
| STRCPY(newval + STRLEN(newval), " ++bad=drop"); |
| else if (eap->bad_char != 0) |
| sprintf((char *)newval + STRLEN(newval), " ++bad=%c", eap->bad_char); |
| # endif |
| vimvars[VV_CMDARG].vv_str = newval; |
| return oldval; |
| } |
| #endif |
| |
| /* |
| * Get the value of internal variable "name". |
| * Return OK or FAIL. |
| */ |
| int |
| get_var_tv( |
| char_u *name, |
| int len, /* length of "name" */ |
| typval_T *rettv, /* NULL when only checking existence */ |
| dictitem_T **dip, /* non-NULL when typval's dict item is needed */ |
| int verbose, /* may give error message */ |
| int no_autoload) /* do not use script autoloading */ |
| { |
| int ret = OK; |
| typval_T *tv = NULL; |
| typval_T atv; |
| dictitem_T *v; |
| int cc; |
| |
| /* truncate the name, so that we can use strcmp() */ |
| cc = name[len]; |
| name[len] = NUL; |
| |
| /* |
| * Check for "b:changedtick". |
| */ |
| if (STRCMP(name, "b:changedtick") == 0) |
| { |
| atv.v_type = VAR_NUMBER; |
| atv.vval.v_number = curbuf->b_changedtick; |
| tv = &atv; |
| } |
| |
| /* |
| * Check for user-defined variables. |
| */ |
| else |
| { |
| v = find_var(name, NULL, no_autoload); |
| if (v != NULL) |
| { |
| tv = &v->di_tv; |
| if (dip != NULL) |
| *dip = v; |
| } |
| } |
| |
| if (tv == NULL) |
| { |
| if (rettv != NULL && verbose) |
| EMSG2(_(e_undefvar), name); |
| ret = FAIL; |
| } |
| else if (rettv != NULL) |
| copy_tv(tv, rettv); |
| |
| name[len] = cc; |
| |
| return ret; |
| } |
| |
| /* |
| * Check if variable "name[len]" is a local variable or an argument. |
| * If so, "*eval_lavars_used" is set to TRUE. |
| */ |
| static void |
| check_vars(char_u *name, int len) |
| { |
| int cc; |
| char_u *varname; |
| hashtab_T *ht; |
| |
| if (eval_lavars_used == NULL) |
| return; |
| |
| /* truncate the name, so that we can use strcmp() */ |
| cc = name[len]; |
| name[len] = NUL; |
| |
| ht = find_var_ht(name, &varname); |
| if (ht == get_funccal_local_ht() || ht == get_funccal_args_ht()) |
| { |
| if (find_var(name, NULL, TRUE) != NULL) |
| *eval_lavars_used = TRUE; |
| } |
| |
| name[len] = cc; |
| } |
| |
| /* |
| * Handle expr[expr], expr[expr:expr] subscript and .name lookup. |
| * Also handle function call with Funcref variable: func(expr) |
| * Can all be combined: dict.func(expr)[idx]['func'](expr) |
| */ |
| int |
| handle_subscript( |
| char_u **arg, |
| typval_T *rettv, |
| int evaluate, /* do more than finding the end */ |
| int verbose) /* give error messages */ |
| { |
| int ret = OK; |
| dict_T *selfdict = NULL; |
| char_u *s; |
| int len; |
| typval_T functv; |
| |
| while (ret == OK |
| && (**arg == '[' |
| || (**arg == '.' && rettv->v_type == VAR_DICT) |
| || (**arg == '(' && (!evaluate || rettv->v_type == VAR_FUNC |
| || rettv->v_type == VAR_PARTIAL))) |
| && !vim_iswhite(*(*arg - 1))) |
| { |
| if (**arg == '(') |
| { |
| partial_T *pt = NULL; |
| |
| /* need to copy the funcref so that we can clear rettv */ |
| if (evaluate) |
| { |
| functv = *rettv; |
| rettv->v_type = VAR_UNKNOWN; |
| |
| /* Invoke the function. Recursive! */ |
| if (functv.v_type == VAR_PARTIAL) |
| { |
| pt = functv.vval.v_partial; |
| s = partial_name(pt); |
| } |
| else |
| s = functv.vval.v_string; |
| } |
| else |
| s = (char_u *)""; |
| ret = get_func_tv(s, (int)STRLEN(s), rettv, arg, |
| curwin->w_cursor.lnum, curwin->w_cursor.lnum, |
| &len, evaluate, pt, selfdict); |
| |
| /* Clear the funcref afterwards, so that deleting it while |
| * evaluating the arguments is possible (see test55). */ |
| if (evaluate) |
| clear_tv(&functv); |
| |
| /* Stop the expression evaluation when immediately aborting on |
| * error, or when an interrupt occurred or an exception was thrown |
| * but not caught. */ |
| if (aborting()) |
| { |
| if (ret == OK) |
| clear_tv(rettv); |
| ret = FAIL; |
| } |
| dict_unref(selfdict); |
| selfdict = NULL; |
| } |
| else /* **arg == '[' || **arg == '.' */ |
| { |
| dict_unref(selfdict); |
| if (rettv->v_type == VAR_DICT) |
| { |
| selfdict = rettv->vval.v_dict; |
| if (selfdict != NULL) |
| ++selfdict->dv_refcount; |
| } |
| else |
| selfdict = NULL; |
| if (eval_index(arg, rettv, evaluate, verbose) == FAIL) |
| { |
| clear_tv(rettv); |
| ret = FAIL; |
| } |
| } |
| } |
| |
| /* Turn "dict.Func" into a partial for "Func" bound to "dict". |
| * Don't do this when "Func" is already a partial that was bound |
| * explicitly (pt_auto is FALSE). */ |
| if (selfdict != NULL |
| && (rettv->v_type == VAR_FUNC |
| || (rettv->v_type == VAR_PARTIAL |
| && (rettv->vval.v_partial->pt_auto |
| || rettv->vval.v_partial->pt_dict == NULL)))) |
| selfdict = make_partial(selfdict, rettv); |
| |
| dict_unref(selfdict); |
| return ret; |
| } |
| |
| /* |
| * Allocate memory for a variable type-value, and make it empty (0 or NULL |
| * value). |
| */ |
| typval_T * |
| alloc_tv(void) |
| { |
| return (typval_T *)alloc_clear((unsigned)sizeof(typval_T)); |
| } |
| |
| /* |
| * Allocate memory for a variable type-value, and assign a string to it. |
| * The string "s" must have been allocated, it is consumed. |
| * Return NULL for out of memory, the variable otherwise. |
| */ |
| static typval_T * |
| alloc_string_tv(char_u *s) |
| { |
| typval_T *rettv; |
| |
| rettv = alloc_tv(); |
| if (rettv != NULL) |
| { |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = s; |
| } |
| else |
| vim_free(s); |
| return rettv; |
| } |
| |
| /* |
| * Free the memory for a variable type-value. |
| */ |
| void |
| free_tv(typval_T *varp) |
| { |
| if (varp != NULL) |
| { |
| switch (varp->v_type) |
| { |
| case VAR_FUNC: |
| func_unref(varp->vval.v_string); |
| /*FALLTHROUGH*/ |
| case VAR_STRING: |
| vim_free(varp->vval.v_string); |
| break; |
| case VAR_PARTIAL: |
| partial_unref(varp->vval.v_partial); |
| break; |
| case VAR_LIST: |
| list_unref(varp->vval.v_list); |
| break; |
| case VAR_DICT: |
| dict_unref(varp->vval.v_dict); |
| break; |
| case VAR_JOB: |
| #ifdef FEAT_JOB_CHANNEL |
| job_unref(varp->vval.v_job); |
| break; |
| #endif |
| case VAR_CHANNEL: |
| #ifdef FEAT_JOB_CHANNEL |
| channel_unref(varp->vval.v_channel); |
| break; |
| #endif |
| case VAR_NUMBER: |
| case VAR_FLOAT: |
| case VAR_UNKNOWN: |
| case VAR_SPECIAL: |
| break; |
| } |
| vim_free(varp); |
| } |
| } |
| |
| /* |
| * Free the memory for a variable value and set the value to NULL or 0. |
| */ |
| void |
| clear_tv(typval_T *varp) |
| { |
| if (varp != NULL) |
| { |
| switch (varp->v_type) |
| { |
| case VAR_FUNC: |
| func_unref(varp->vval.v_string); |
| /*FALLTHROUGH*/ |
| case VAR_STRING: |
| vim_free(varp->vval.v_string); |
| varp->vval.v_string = NULL; |
| break; |
| case VAR_PARTIAL: |
| partial_unref(varp->vval.v_partial); |
| varp->vval.v_partial = NULL; |
| break; |
| case VAR_LIST: |
| list_unref(varp->vval.v_list); |
| varp->vval.v_list = NULL; |
| break; |
| case VAR_DICT: |
| dict_unref(varp->vval.v_dict); |
| varp->vval.v_dict = NULL; |
| break; |
| case VAR_NUMBER: |
| case VAR_SPECIAL: |
| varp->vval.v_number = 0; |
| break; |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| varp->vval.v_float = 0.0; |
| break; |
| #endif |
| case VAR_JOB: |
| #ifdef FEAT_JOB_CHANNEL |
| job_unref(varp->vval.v_job); |
| varp->vval.v_job = NULL; |
| #endif |
| break; |
| case VAR_CHANNEL: |
| #ifdef FEAT_JOB_CHANNEL |
| channel_unref(varp->vval.v_channel); |
| varp->vval.v_channel = NULL; |
| #endif |
| case VAR_UNKNOWN: |
| break; |
| } |
| varp->v_lock = 0; |
| } |
| } |
| |
| /* |
| * Set the value of a variable to NULL without freeing items. |
| */ |
| void |
| init_tv(typval_T *varp) |
| { |
| if (varp != NULL) |
| vim_memset(varp, 0, sizeof(typval_T)); |
| } |
| |
| /* |
| * Get the number value of a variable. |
| * If it is a String variable, uses vim_str2nr(). |
| * For incompatible types, return 0. |
| * get_tv_number_chk() is similar to get_tv_number(), but informs the |
| * caller of incompatible types: it sets *denote to TRUE if "denote" |
| * is not NULL or returns -1 otherwise. |
| */ |
| varnumber_T |
| get_tv_number(typval_T *varp) |
| { |
| int error = FALSE; |
| |
| return get_tv_number_chk(varp, &error); /* return 0L on error */ |
| } |
| |
| varnumber_T |
| get_tv_number_chk(typval_T *varp, int *denote) |
| { |
| varnumber_T n = 0L; |
| |
| switch (varp->v_type) |
| { |
| case VAR_NUMBER: |
| return varp->vval.v_number; |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| EMSG(_("E805: Using a Float as a Number")); |
| break; |
| #endif |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| EMSG(_("E703: Using a Funcref as a Number")); |
| break; |
| case VAR_STRING: |
| if (varp->vval.v_string != NULL) |
| vim_str2nr(varp->vval.v_string, NULL, NULL, |
| STR2NR_ALL, &n, NULL, 0); |
| return n; |
| case VAR_LIST: |
| EMSG(_("E745: Using a List as a Number")); |
| break; |
| case VAR_DICT: |
| EMSG(_("E728: Using a Dictionary as a Number")); |
| break; |
| case VAR_SPECIAL: |
| return varp->vval.v_number == VVAL_TRUE ? 1 : 0; |
| break; |
| case VAR_JOB: |
| #ifdef FEAT_JOB_CHANNEL |
| EMSG(_("E910: Using a Job as a Number")); |
| break; |
| #endif |
| case VAR_CHANNEL: |
| #ifdef FEAT_JOB_CHANNEL |
| EMSG(_("E913: Using a Channel as a Number")); |
| break; |
| #endif |
| case VAR_UNKNOWN: |
| EMSG2(_(e_intern2), "get_tv_number(UNKNOWN)"); |
| break; |
| } |
| if (denote == NULL) /* useful for values that must be unsigned */ |
| n = -1; |
| else |
| *denote = TRUE; |
| return n; |
| } |
| |
| #ifdef FEAT_FLOAT |
| float_T |
| get_tv_float(typval_T *varp) |
| { |
| switch (varp->v_type) |
| { |
| case VAR_NUMBER: |
| return (float_T)(varp->vval.v_number); |
| case VAR_FLOAT: |
| return varp->vval.v_float; |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| EMSG(_("E891: Using a Funcref as a Float")); |
| break; |
| case VAR_STRING: |
| EMSG(_("E892: Using a String as a Float")); |
| break; |
| case VAR_LIST: |
| EMSG(_("E893: Using a List as a Float")); |
| break; |
| case VAR_DICT: |
| EMSG(_("E894: Using a Dictionary as a Float")); |
| break; |
| case VAR_SPECIAL: |
| EMSG(_("E907: Using a special value as a Float")); |
| break; |
| case VAR_JOB: |
| # ifdef FEAT_JOB_CHANNEL |
| EMSG(_("E911: Using a Job as a Float")); |
| break; |
| # endif |
| case VAR_CHANNEL: |
| # ifdef FEAT_JOB_CHANNEL |
| EMSG(_("E914: Using a Channel as a Float")); |
| break; |
| # endif |
| case VAR_UNKNOWN: |
| EMSG2(_(e_intern2), "get_tv_float(UNKNOWN)"); |
| break; |
| } |
| return 0; |
| } |
| #endif |
| |
| /* |
| * Get the string value of a variable. |
| * If it is a Number variable, the number is converted into a string. |
| * get_tv_string() uses a single, static buffer. YOU CAN ONLY USE IT ONCE! |
| * get_tv_string_buf() uses a given buffer. |
| * If the String variable has never been set, return an empty string. |
| * Never returns NULL; |
| * get_tv_string_chk() and get_tv_string_buf_chk() are similar, but return |
| * NULL on error. |
| */ |
| char_u * |
| get_tv_string(typval_T *varp) |
| { |
| static char_u mybuf[NUMBUFLEN]; |
| |
| return get_tv_string_buf(varp, mybuf); |
| } |
| |
| char_u * |
| get_tv_string_buf(typval_T *varp, char_u *buf) |
| { |
| char_u *res = get_tv_string_buf_chk(varp, buf); |
| |
| return res != NULL ? res : (char_u *)""; |
| } |
| |
| /* |
| * Careful: This uses a single, static buffer. YOU CAN ONLY USE IT ONCE! |
| */ |
| char_u * |
| get_tv_string_chk(typval_T *varp) |
| { |
| static char_u mybuf[NUMBUFLEN]; |
| |
| return get_tv_string_buf_chk(varp, mybuf); |
| } |
| |
| char_u * |
| get_tv_string_buf_chk(typval_T *varp, char_u *buf) |
| { |
| switch (varp->v_type) |
| { |
| case VAR_NUMBER: |
| vim_snprintf((char *)buf, NUMBUFLEN, "%lld", |
| (varnumber_T)varp->vval.v_number); |
| return buf; |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| EMSG(_("E729: using Funcref as a String")); |
| break; |
| case VAR_LIST: |
| EMSG(_("E730: using List as a String")); |
| break; |
| case VAR_DICT: |
| EMSG(_("E731: using Dictionary as a String")); |
| break; |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| EMSG(_(e_float_as_string)); |
| break; |
| #endif |
| case VAR_STRING: |
| if (varp->vval.v_string != NULL) |
| return varp->vval.v_string; |
| return (char_u *)""; |
| case VAR_SPECIAL: |
| STRCPY(buf, get_var_special_name(varp->vval.v_number)); |
| return buf; |
| case VAR_JOB: |
| #ifdef FEAT_JOB_CHANNEL |
| { |
| job_T *job = varp->vval.v_job; |
| char *status; |
| |
| if (job == NULL) |
| return (char_u *)"no process"; |
| status = job->jv_status == JOB_FAILED ? "fail" |
| : job->jv_status == JOB_ENDED ? "dead" |
| : "run"; |
| # ifdef UNIX |
| vim_snprintf((char *)buf, NUMBUFLEN, |
| "process %ld %s", (long)job->jv_pid, status); |
| # elif defined(WIN32) |
| vim_snprintf((char *)buf, NUMBUFLEN, |
| "process %ld %s", |
| (long)job->jv_proc_info.dwProcessId, |
| status); |
| # else |
| /* fall-back */ |
| vim_snprintf((char *)buf, NUMBUFLEN, "process ? %s", status); |
| # endif |
| return buf; |
| } |
| #endif |
| break; |
| case VAR_CHANNEL: |
| #ifdef FEAT_JOB_CHANNEL |
| { |
| channel_T *channel = varp->vval.v_channel; |
| char *status = channel_status(channel); |
| |
| if (channel == NULL) |
| vim_snprintf((char *)buf, NUMBUFLEN, "channel %s", status); |
| else |
| vim_snprintf((char *)buf, NUMBUFLEN, |
| "channel %d %s", channel->ch_id, status); |
| return buf; |
| } |
| #endif |
| break; |
| case VAR_UNKNOWN: |
| EMSG(_("E908: using an invalid value as a String")); |
| break; |
| } |
| return NULL; |
| } |
| |
| /* |
| * Find variable "name" in the list of variables. |
| * Return a pointer to it if found, NULL if not found. |
| * Careful: "a:0" variables don't have a name. |
| * When "htp" is not NULL we are writing to the variable, set "htp" to the |
| * hashtab_T used. |
| */ |
| dictitem_T * |
| find_var(char_u *name, hashtab_T **htp, int no_autoload) |
| { |
| char_u *varname; |
| hashtab_T *ht; |
| dictitem_T *ret = NULL; |
| |
| ht = find_var_ht(name, &varname); |
| if (htp != NULL) |
| *htp = ht; |
| if (ht == NULL) |
| return NULL; |
| ret = find_var_in_ht(ht, *name, varname, no_autoload || htp != NULL); |
| if (ret != NULL) |
| return ret; |
| |
| /* Search in parent scope for lambda */ |
| return find_var_in_scoped_ht(name, no_autoload || htp != NULL); |
| } |
| |
| /* |
| * Find variable "varname" in hashtab "ht" with name "htname". |
| * Returns NULL if not found. |
| */ |
| dictitem_T * |
| find_var_in_ht( |
| hashtab_T *ht, |
| int htname, |
| char_u *varname, |
| int no_autoload) |
| { |
| hashitem_T *hi; |
| |
| if (*varname == NUL) |
| { |
| /* Must be something like "s:", otherwise "ht" would be NULL. */ |
| switch (htname) |
| { |
| case 's': return &SCRIPT_SV(current_SID)->sv_var; |
| case 'g': return &globvars_var; |
| case 'v': return &vimvars_var; |
| case 'b': return &curbuf->b_bufvar; |
| case 'w': return &curwin->w_winvar; |
| #ifdef FEAT_WINDOWS |
| case 't': return &curtab->tp_winvar; |
| #endif |
| case 'l': return get_funccal_local_var(); |
| case 'a': return get_funccal_args_var(); |
| } |
| return NULL; |
| } |
| |
| hi = hash_find(ht, varname); |
| if (HASHITEM_EMPTY(hi)) |
| { |
| /* For global variables we may try auto-loading the script. If it |
| * worked find the variable again. Don't auto-load a script if it was |
| * loaded already, otherwise it would be loaded every time when |
| * checking if a function name is a Funcref variable. */ |
| if (ht == &globvarht && !no_autoload) |
| { |
| /* Note: script_autoload() may make "hi" invalid. It must either |
| * be obtained again or not used. */ |
| if (!script_autoload(varname, FALSE) || aborting()) |
| return NULL; |
| hi = hash_find(ht, varname); |
| } |
| if (HASHITEM_EMPTY(hi)) |
| return NULL; |
| } |
| return HI2DI(hi); |
| } |
| |
| /* |
| * Find the hashtab used for a variable name. |
| * Return NULL if the name is not valid. |
| * Set "varname" to the start of name without ':'. |
| */ |
| hashtab_T * |
| find_var_ht(char_u *name, char_u **varname) |
| { |
| hashitem_T *hi; |
| hashtab_T *ht; |
| |
| if (name[0] == NUL) |
| return NULL; |
| if (name[1] != ':') |
| { |
| /* The name must not start with a colon or #. */ |
| if (name[0] == ':' || name[0] == AUTOLOAD_CHAR) |
| return NULL; |
| *varname = name; |
| |
| /* "version" is "v:version" in all scopes */ |
| hi = hash_find(&compat_hashtab, name); |
| if (!HASHITEM_EMPTY(hi)) |
| return &compat_hashtab; |
| |
| ht = get_funccal_local_ht(); |
| if (ht == NULL) |
| return &globvarht; /* global variable */ |
| return ht; /* local variable */ |
| } |
| *varname = name + 2; |
| if (*name == 'g') /* global variable */ |
| return &globvarht; |
| /* There must be no ':' or '#' in the rest of the name, unless g: is used |
| */ |
| if (vim_strchr(name + 2, ':') != NULL |
| || vim_strchr(name + 2, AUTOLOAD_CHAR) != NULL) |
| return NULL; |
| if (*name == 'b') /* buffer variable */ |
| return &curbuf->b_vars->dv_hashtab; |
| if (*name == 'w') /* window variable */ |
| return &curwin->w_vars->dv_hashtab; |
| #ifdef FEAT_WINDOWS |
| if (*name == 't') /* tab page variable */ |
| return &curtab->tp_vars->dv_hashtab; |
| #endif |
| if (*name == 'v') /* v: variable */ |
| return &vimvarht; |
| if (*name == 'a') /* a: function argument */ |
| return get_funccal_args_ht(); |
| if (*name == 'l') /* l: local function variable */ |
| return get_funccal_local_ht(); |
| if (*name == 's' /* script variable */ |
| && current_SID > 0 && current_SID <= ga_scripts.ga_len) |
| return &SCRIPT_VARS(current_SID); |
| return NULL; |
| } |
| |
| /* |
| * Get the string value of a (global/local) variable. |
| * Note: see get_tv_string() for how long the pointer remains valid. |
| * Returns NULL when it doesn't exist. |
| */ |
| char_u * |
| get_var_value(char_u *name) |
| { |
| dictitem_T *v; |
| |
| v = find_var(name, NULL, FALSE); |
| if (v == NULL) |
| return NULL; |
| return get_tv_string(&v->di_tv); |
| } |
| |
| /* |
| * Allocate a new hashtab for a sourced script. It will be used while |
| * sourcing this script and when executing functions defined in the script. |
| */ |
| void |
| new_script_vars(scid_T id) |
| { |
| int i; |
| hashtab_T *ht; |
| scriptvar_T *sv; |
| |
| if (ga_grow(&ga_scripts, (int)(id - ga_scripts.ga_len)) == OK) |
| { |
| /* Re-allocating ga_data means that an ht_array pointing to |
| * ht_smallarray becomes invalid. We can recognize this: ht_mask is |
| * at its init value. Also reset "v_dict", it's always the same. */ |
| for (i = 1; i <= ga_scripts.ga_len; ++i) |
| { |
| ht = &SCRIPT_VARS(i); |
| if (ht->ht_mask == HT_INIT_SIZE - 1) |
| ht->ht_array = ht->ht_smallarray; |
| sv = SCRIPT_SV(i); |
| sv->sv_var.di_tv.vval.v_dict = &sv->sv_dict; |
| } |
| |
| while (ga_scripts.ga_len < id) |
| { |
| sv = SCRIPT_SV(ga_scripts.ga_len + 1) = |
| (scriptvar_T *)alloc_clear(sizeof(scriptvar_T)); |
| init_var_dict(&sv->sv_dict, &sv->sv_var, VAR_SCOPE); |
| ++ga_scripts.ga_len; |
| } |
| } |
| } |
| |
| /* |
| * Initialize dictionary "dict" as a scope and set variable "dict_var" to |
| * point to it. |
| */ |
| void |
| init_var_dict(dict_T *dict, dictitem_T *dict_var, int scope) |
| { |
| hash_init(&dict->dv_hashtab); |
| dict->dv_lock = 0; |
| dict->dv_scope = scope; |
| dict->dv_refcount = DO_NOT_FREE_CNT; |
| dict->dv_copyID = 0; |
| dict_var->di_tv.vval.v_dict = dict; |
| dict_var->di_tv.v_type = VAR_DICT; |
| dict_var->di_tv.v_lock = VAR_FIXED; |
| dict_var->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX; |
| dict_var->di_key[0] = NUL; |
| } |
| |
| /* |
| * Unreference a dictionary initialized by init_var_dict(). |
| */ |
| void |
| unref_var_dict(dict_T *dict) |
| { |
| /* Now the dict needs to be freed if no one else is using it, go back to |
| * normal reference counting. */ |
| dict->dv_refcount -= DO_NOT_FREE_CNT - 1; |
| dict_unref(dict); |
| } |
| |
| /* |
| * Clean up a list of internal variables. |
| * Frees all allocated variables and the value they contain. |
| * Clears hashtab "ht", does not free it. |
| */ |
| void |
| vars_clear(hashtab_T *ht) |
| { |
| vars_clear_ext(ht, TRUE); |
| } |
| |
| /* |
| * Like vars_clear(), but only free the value if "free_val" is TRUE. |
| */ |
| void |
| vars_clear_ext(hashtab_T *ht, int free_val) |
| { |
| int todo; |
| hashitem_T *hi; |
| dictitem_T *v; |
| |
| hash_lock(ht); |
| todo = (int)ht->ht_used; |
| for (hi = ht->ht_array; todo > 0; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| |
| /* Free the variable. Don't remove it from the hashtab, |
| * ht_array might change then. hash_clear() takes care of it |
| * later. */ |
| v = HI2DI(hi); |
| if (free_val) |
| clear_tv(&v->di_tv); |
| if (v->di_flags & DI_FLAGS_ALLOC) |
| vim_free(v); |
| } |
| } |
| hash_clear(ht); |
| ht->ht_used = 0; |
| } |
| |
| /* |
| * Delete a variable from hashtab "ht" at item "hi". |
| * Clear the variable value and free the dictitem. |
| */ |
| static void |
| delete_var(hashtab_T *ht, hashitem_T *hi) |
| { |
| dictitem_T *di = HI2DI(hi); |
| |
| hash_remove(ht, hi); |
| clear_tv(&di->di_tv); |
| vim_free(di); |
| } |
| |
| /* |
| * List the value of one internal variable. |
| */ |
| static void |
| list_one_var(dictitem_T *v, char_u *prefix, int *first) |
| { |
| char_u *tofree; |
| char_u *s; |
| char_u numbuf[NUMBUFLEN]; |
| |
| s = echo_string(&v->di_tv, &tofree, numbuf, get_copyID()); |
| list_one_var_a(prefix, v->di_key, v->di_tv.v_type, |
| s == NULL ? (char_u *)"" : s, first); |
| vim_free(tofree); |
| } |
| |
| static void |
| list_one_var_a( |
| char_u *prefix, |
| char_u *name, |
| int type, |
| char_u *string, |
| int *first) /* when TRUE clear rest of screen and set to FALSE */ |
| { |
| /* don't use msg() or msg_attr() to avoid overwriting "v:statusmsg" */ |
| msg_start(); |
| msg_puts(prefix); |
| if (name != NULL) /* "a:" vars don't have a name stored */ |
| msg_puts(name); |
| msg_putchar(' '); |
| msg_advance(22); |
| if (type == VAR_NUMBER) |
| msg_putchar('#'); |
| else if (type == VAR_FUNC || type == VAR_PARTIAL) |
| msg_putchar('*'); |
| else if (type == VAR_LIST) |
| { |
| msg_putchar('['); |
| if (*string == '[') |
| ++string; |
| } |
| else if (type == VAR_DICT) |
| { |
| msg_putchar('{'); |
| if (*string == '{') |
| ++string; |
| } |
| else |
| msg_putchar(' '); |
| |
| msg_outtrans(string); |
| |
| if (type == VAR_FUNC || type == VAR_PARTIAL) |
| msg_puts((char_u *)"()"); |
| if (*first) |
| { |
| msg_clr_eos(); |
| *first = FALSE; |
| } |
| } |
| |
| /* |
| * Set variable "name" to value in "tv". |
| * If the variable already exists, the value is updated. |
| * Otherwise the variable is created. |
| */ |
| void |
| set_var( |
| char_u *name, |
| typval_T *tv, |
| int copy) /* make copy of value in "tv" */ |
| { |
| dictitem_T *v; |
| char_u *varname; |
| hashtab_T *ht; |
| |
| ht = find_var_ht(name, &varname); |
| if (ht == NULL || *varname == NUL) |
| { |
| EMSG2(_(e_illvar), name); |
| return; |
| } |
| v = find_var_in_ht(ht, 0, varname, TRUE); |
| |
| /* Search in parent scope which is possible to reference from lambda */ |
| if (v == NULL) |
| v = find_var_in_scoped_ht(name, TRUE); |
| |
| if ((tv->v_type == VAR_FUNC || tv->v_type == VAR_PARTIAL) |
| && var_check_func_name(name, v == NULL)) |
| return; |
| |
| if (v != NULL) |
| { |
| /* existing variable, need to clear the value */ |
| if (var_check_ro(v->di_flags, name, FALSE) |
| || tv_check_lock(v->di_tv.v_lock, name, FALSE)) |
| return; |
| |
| /* |
| * Handle setting internal v: variables separately where needed to |
| * prevent changing the type. |
| */ |
| if (ht == &vimvarht) |
| { |
| if (v->di_tv.v_type == VAR_STRING) |
| { |
| vim_free(v->di_tv.vval.v_string); |
| if (copy || tv->v_type != VAR_STRING) |
| v->di_tv.vval.v_string = vim_strsave(get_tv_string(tv)); |
| else |
| { |
| /* Take over the string to avoid an extra alloc/free. */ |
| v->di_tv.vval.v_string = tv->vval.v_string; |
| tv->vval.v_string = NULL; |
| } |
| return; |
| } |
| else if (v->di_tv.v_type == VAR_NUMBER) |
| { |
| v->di_tv.vval.v_number = get_tv_number(tv); |
| if (STRCMP(varname, "searchforward") == 0) |
| set_search_direction(v->di_tv.vval.v_number ? '/' : '?'); |
| #ifdef FEAT_SEARCH_EXTRA |
| else if (STRCMP(varname, "hlsearch") == 0) |
| { |
| no_hlsearch = !v->di_tv.vval.v_number; |
| redraw_all_later(SOME_VALID); |
| } |
| #endif |
| return; |
| } |
| else if (v->di_tv.v_type != tv->v_type) |
| EMSG2(_(e_intern2), "set_var()"); |
| } |
| |
| clear_tv(&v->di_tv); |
| } |
| else /* add a new variable */ |
| { |
| /* Can't add "v:" variable. */ |
| if (ht == &vimvarht) |
| { |
| EMSG2(_(e_illvar), name); |
| return; |
| } |
| |
| /* Make sure the variable name is valid. */ |
| if (!valid_varname(varname)) |
| return; |
| |
| v = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T) |
| + STRLEN(varname))); |
| if (v == NULL) |
| return; |
| STRCPY(v->di_key, varname); |
| if (hash_add(ht, DI2HIKEY(v)) == FAIL) |
| { |
| vim_free(v); |
| return; |
| } |
| v->di_flags = DI_FLAGS_ALLOC; |
| } |
| |
| if (copy || tv->v_type == VAR_NUMBER || tv->v_type == VAR_FLOAT) |
| copy_tv(tv, &v->di_tv); |
| else |
| { |
| v->di_tv = *tv; |
| v->di_tv.v_lock = 0; |
| init_tv(tv); |
| } |
| } |
| |
| /* |
| * Return TRUE if di_flags "flags" indicates variable "name" is read-only. |
| * Also give an error message. |
| */ |
| int |
| var_check_ro(int flags, char_u *name, int use_gettext) |
| { |
| if (flags & DI_FLAGS_RO) |
| { |
| EMSG2(_(e_readonlyvar), use_gettext ? (char_u *)_(name) : name); |
| return TRUE; |
| } |
| if ((flags & DI_FLAGS_RO_SBX) && sandbox) |
| { |
| EMSG2(_(e_readonlysbx), use_gettext ? (char_u *)_(name) : name); |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Return TRUE if di_flags "flags" indicates variable "name" is fixed. |
| * Also give an error message. |
| */ |
| int |
| var_check_fixed(int flags, char_u *name, int use_gettext) |
| { |
| if (flags & DI_FLAGS_FIX) |
| { |
| EMSG2(_("E795: Cannot delete variable %s"), |
| use_gettext ? (char_u *)_(name) : name); |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Check if a funcref is assigned to a valid variable name. |
| * Return TRUE and give an error if not. |
| */ |
| int |
| var_check_func_name( |
| char_u *name, /* points to start of variable name */ |
| int new_var) /* TRUE when creating the variable */ |
| { |
| /* Allow for w: b: s: and t:. */ |
| if (!(vim_strchr((char_u *)"wbst", name[0]) != NULL && name[1] == ':') |
| && !ASCII_ISUPPER((name[0] != NUL && name[1] == ':') |
| ? name[2] : name[0])) |
| { |
| EMSG2(_("E704: Funcref variable name must start with a capital: %s"), |
| name); |
| return TRUE; |
| } |
| /* Don't allow hiding a function. When "v" is not NULL we might be |
| * assigning another function to the same var, the type is checked |
| * below. */ |
| if (new_var && function_exists(name, FALSE)) |
| { |
| EMSG2(_("E705: Variable name conflicts with existing function: %s"), |
| name); |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Check if a variable name is valid. |
| * Return FALSE and give an error if not. |
| */ |
| int |
| valid_varname(char_u *varname) |
| { |
| char_u *p; |
| |
| for (p = varname; *p != NUL; ++p) |
| if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p)) |
| && *p != AUTOLOAD_CHAR) |
| { |
| EMSG2(_(e_illvar), varname); |
| return FALSE; |
| } |
| return TRUE; |
| } |
| |
| /* |
| * Return TRUE if typeval "tv" is set to be locked (immutable). |
| * Also give an error message, using "name" or _("name") when use_gettext is |
| * TRUE. |
| */ |
| int |
| tv_check_lock(int lock, char_u *name, int use_gettext) |
| { |
| if (lock & VAR_LOCKED) |
| { |
| EMSG2(_("E741: Value is locked: %s"), |
| name == NULL ? (char_u *)_("Unknown") |
| : use_gettext ? (char_u *)_(name) |
| : name); |
| return TRUE; |
| } |
| if (lock & VAR_FIXED) |
| { |
| EMSG2(_("E742: Cannot change value of %s"), |
| name == NULL ? (char_u *)_("Unknown") |
| : use_gettext ? (char_u *)_(name) |
| : name); |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Copy the values from typval_T "from" to typval_T "to". |
| * When needed allocates string or increases reference count. |
| * Does not make a copy of a list or dict but copies the reference! |
| * It is OK for "from" and "to" to point to the same item. This is used to |
| * make a copy later. |
| */ |
| void |
| copy_tv(typval_T *from, typval_T *to) |
| { |
| to->v_type = from->v_type; |
| to->v_lock = 0; |
| switch (from->v_type) |
| { |
| case VAR_NUMBER: |
| case VAR_SPECIAL: |
| to->vval.v_number = from->vval.v_number; |
| break; |
| case VAR_FLOAT: |
| #ifdef FEAT_FLOAT |
| to->vval.v_float = from->vval.v_float; |
| break; |
| #endif |
| case VAR_JOB: |
| #ifdef FEAT_JOB_CHANNEL |
| to->vval.v_job = from->vval.v_job; |
| if (to->vval.v_job != NULL) |
| ++to->vval.v_job->jv_refcount; |
| break; |
| #endif |
| case VAR_CHANNEL: |
| #ifdef FEAT_JOB_CHANNEL |
| to->vval.v_channel = from->vval.v_channel; |
| if (to->vval.v_channel != NULL) |
| ++to->vval.v_channel->ch_refcount; |
| break; |
| #endif |
| case VAR_STRING: |
| case VAR_FUNC: |
| if (from->vval.v_string == NULL) |
| to->vval.v_string = NULL; |
| else |
| { |
| to->vval.v_string = vim_strsave(from->vval.v_string); |
| if (from->v_type == VAR_FUNC) |
| func_ref(to->vval.v_string); |
| } |
| break; |
| case VAR_PARTIAL: |
| if (from->vval.v_partial == NULL) |
| to->vval.v_partial = NULL; |
| else |
| { |
| to->vval.v_partial = from->vval.v_partial; |
| ++to->vval.v_partial->pt_refcount; |
| } |
| break; |
| case VAR_LIST: |
| if (from->vval.v_list == NULL) |
| to->vval.v_list = NULL; |
| else |
| { |
| to->vval.v_list = from->vval.v_list; |
| ++to->vval.v_list->lv_refcount; |
| } |
| break; |
| case VAR_DICT: |
| if (from->vval.v_dict == NULL) |
| to->vval.v_dict = NULL; |
| else |
| { |
| to->vval.v_dict = from->vval.v_dict; |
| ++to->vval.v_dict->dv_refcount; |
| } |
| break; |
| case VAR_UNKNOWN: |
| EMSG2(_(e_intern2), "copy_tv(UNKNOWN)"); |
| break; |
| } |
| } |
| |
| /* |
| * Make a copy of an item. |
| * Lists and Dictionaries are also copied. A deep copy if "deep" is set. |
| * For deepcopy() "copyID" is zero for a full copy or the ID for when a |
| * reference to an already copied list/dict can be used. |
| * Returns FAIL or OK. |
| */ |
| int |
| item_copy( |
| typval_T *from, |
| typval_T *to, |
| int deep, |
| int copyID) |
| { |
| static int recurse = 0; |
| int ret = OK; |
| |
| if (recurse >= DICT_MAXNEST) |
| { |
| EMSG(_("E698: variable nested too deep for making a copy")); |
| return FAIL; |
| } |
| ++recurse; |
| |
| switch (from->v_type) |
| { |
| case VAR_NUMBER: |
| case VAR_FLOAT: |
| case VAR_STRING: |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| case VAR_SPECIAL: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| copy_tv(from, to); |
| break; |
| case VAR_LIST: |
| to->v_type = VAR_LIST; |
| to->v_lock = 0; |
| if (from->vval.v_list == NULL) |
| to->vval.v_list = NULL; |
| else if (copyID != 0 && from->vval.v_list->lv_copyID == copyID) |
| { |
| /* use the copy made earlier */ |
| to->vval.v_list = from->vval.v_list->lv_copylist; |
| ++to->vval.v_list->lv_refcount; |
| } |
| else |
| to->vval.v_list = list_copy(from->vval.v_list, deep, copyID); |
| if (to->vval.v_list == NULL) |
| ret = FAIL; |
| break; |
| case VAR_DICT: |
| to->v_type = VAR_DICT; |
| to->v_lock = 0; |
| if (from->vval.v_dict == NULL) |
| to->vval.v_dict = NULL; |
| else if (copyID != 0 && from->vval.v_dict->dv_copyID == copyID) |
| { |
| /* use the copy made earlier */ |
| to->vval.v_dict = from->vval.v_dict->dv_copydict; |
| ++to->vval.v_dict->dv_refcount; |
| } |
| else |
| to->vval.v_dict = dict_copy(from->vval.v_dict, deep, copyID); |
| if (to->vval.v_dict == NULL) |
| ret = FAIL; |
| break; |
| case VAR_UNKNOWN: |
| EMSG2(_(e_intern2), "item_copy(UNKNOWN)"); |
| ret = FAIL; |
| } |
| --recurse; |
| return ret; |
| } |
| |
| /* |
| * This function is used by f_input() and f_inputdialog() functions. The third |
| * argument to f_input() specifies the type of completion to use at the |
| * prompt. The third argument to f_inputdialog() specifies the value to return |
| * when the user cancels the prompt. |
| */ |
| void |
| get_user_input( |
| typval_T *argvars, |
| typval_T *rettv, |
| int inputdialog, |
| int secret) |
| { |
| char_u *prompt = get_tv_string_chk(&argvars[0]); |
| char_u *p = NULL; |
| int c; |
| char_u buf[NUMBUFLEN]; |
| int cmd_silent_save = cmd_silent; |
| char_u *defstr = (char_u *)""; |
| int xp_type = EXPAND_NOTHING; |
| char_u *xp_arg = NULL; |
| |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = NULL; |
| |
| #ifdef NO_CONSOLE_INPUT |
| /* While starting up, there is no place to enter text. */ |
| if (no_console_input()) |
| return; |
| #endif |
| |
| cmd_silent = FALSE; /* Want to see the prompt. */ |
| if (prompt != NULL) |
| { |
| /* Only the part of the message after the last NL is considered as |
| * prompt for the command line */ |
| p = vim_strrchr(prompt, '\n'); |
| if (p == NULL) |
| p = prompt; |
| else |
| { |
| ++p; |
| c = *p; |
| *p = NUL; |
| msg_start(); |
| msg_clr_eos(); |
| msg_puts_attr(prompt, echo_attr); |
| msg_didout = FALSE; |
| msg_starthere(); |
| *p = c; |
| } |
| cmdline_row = msg_row; |
| |
| if (argvars[1].v_type != VAR_UNKNOWN) |
| { |
| defstr = get_tv_string_buf_chk(&argvars[1], buf); |
| if (defstr != NULL) |
| stuffReadbuffSpec(defstr); |
| |
| if (!inputdialog && argvars[2].v_type != VAR_UNKNOWN) |
| { |
| char_u *xp_name; |
| int xp_namelen; |
| long argt; |
| |
| /* input() with a third argument: completion */ |
| rettv->vval.v_string = NULL; |
| |
| xp_name = get_tv_string_buf_chk(&argvars[2], buf); |
| if (xp_name == NULL) |
| return; |
| |
| xp_namelen = (int)STRLEN(xp_name); |
| |
| if (parse_compl_arg(xp_name, xp_namelen, &xp_type, &argt, |
| &xp_arg) == FAIL) |
| return; |
| } |
| } |
| |
| if (defstr != NULL) |
| { |
| int save_ex_normal_busy = ex_normal_busy; |
| ex_normal_busy = 0; |
| rettv->vval.v_string = |
| getcmdline_prompt(secret ? NUL : '@', p, echo_attr, |
| xp_type, xp_arg); |
| ex_normal_busy = save_ex_normal_busy; |
| } |
| if (inputdialog && rettv->vval.v_string == NULL |
| && argvars[1].v_type != VAR_UNKNOWN |
| && argvars[2].v_type != VAR_UNKNOWN) |
| rettv->vval.v_string = vim_strsave(get_tv_string_buf( |
| &argvars[2], buf)); |
| |
| vim_free(xp_arg); |
| |
| /* since the user typed this, no need to wait for return */ |
| need_wait_return = FALSE; |
| msg_didout = FALSE; |
| } |
| cmd_silent = cmd_silent_save; |
| } |
| |
| /* |
| * ":echo expr1 ..." print each argument separated with a space, add a |
| * newline at the end. |
| * ":echon expr1 ..." print each argument plain. |
| */ |
| void |
| ex_echo(exarg_T *eap) |
| { |
| char_u *arg = eap->arg; |
| typval_T rettv; |
| char_u *tofree; |
| char_u *p; |
| int needclr = TRUE; |
| int atstart = TRUE; |
| char_u numbuf[NUMBUFLEN]; |
| |
| if (eap->skip) |
| ++emsg_skip; |
| while (*arg != NUL && *arg != '|' && *arg != '\n' && !got_int) |
| { |
| /* If eval1() causes an error message the text from the command may |
| * still need to be cleared. E.g., "echo 22,44". */ |
| need_clr_eos = needclr; |
| |
| p = arg; |
| if (eval1(&arg, &rettv, !eap->skip) == FAIL) |
| { |
| /* |
| * Report the invalid expression unless the expression evaluation |
| * has been cancelled due to an aborting error, an interrupt, or an |
| * exception. |
| */ |
| if (!aborting()) |
| EMSG2(_(e_invexpr2), p); |
| need_clr_eos = FALSE; |
| break; |
| } |
| need_clr_eos = FALSE; |
| |
| if (!eap->skip) |
| { |
| if (atstart) |
| { |
| atstart = FALSE; |
| /* Call msg_start() after eval1(), evaluating the expression |
| * may cause a message to appear. */ |
| if (eap->cmdidx == CMD_echo) |
| { |
| /* Mark the saved text as finishing the line, so that what |
| * follows is displayed on a new line when scrolling back |
| * at the more prompt. */ |
| msg_sb_eol(); |
| msg_start(); |
| } |
| } |
| else if (eap->cmdidx == CMD_echo) |
| msg_puts_attr((char_u *)" ", echo_attr); |
| p = echo_string(&rettv, &tofree, numbuf, get_copyID()); |
| if (p != NULL) |
| for ( ; *p != NUL && !got_int; ++p) |
| { |
| if (*p == '\n' || *p == '\r' || *p == TAB) |
| { |
| if (*p != TAB && needclr) |
| { |
| /* remove any text still there from the command */ |
| msg_clr_eos(); |
| needclr = FALSE; |
| } |
| msg_putchar_attr(*p, echo_attr); |
| } |
| else |
| { |
| #ifdef FEAT_MBYTE |
| if (has_mbyte) |
| { |
| int i = (*mb_ptr2len)(p); |
| |
| (void)msg_outtrans_len_attr(p, i, echo_attr); |
| p += i - 1; |
| } |
| else |
| #endif |
| (void)msg_outtrans_len_attr(p, 1, echo_attr); |
| } |
| } |
| vim_free(tofree); |
| } |
| clear_tv(&rettv); |
| arg = skipwhite(arg); |
| } |
| eap->nextcmd = check_nextcmd(arg); |
| |
| if (eap->skip) |
| --emsg_skip; |
| else |
| { |
| /* remove text that may still be there from the command */ |
| if (needclr) |
| msg_clr_eos(); |
| if (eap->cmdidx == CMD_echo) |
| msg_end(); |
| } |
| } |
| |
| /* |
| * ":echohl {name}". |
| */ |
| void |
| ex_echohl(exarg_T *eap) |
| { |
| int id; |
| |
| id = syn_name2id(eap->arg); |
| if (id == 0) |
| echo_attr = 0; |
| else |
| echo_attr = syn_id2attr(id); |
| } |
| |
| /* |
| * ":execute expr1 ..." execute the result of an expression. |
| * ":echomsg expr1 ..." Print a message |
| * ":echoerr expr1 ..." Print an error |
| * Each gets spaces around each argument and a newline at the end for |
| * echo commands |
| */ |
| void |
| ex_execute(exarg_T *eap) |
| { |
| char_u *arg = eap->arg; |
| typval_T rettv; |
| int ret = OK; |
| char_u *p; |
| garray_T ga; |
| int len; |
| int save_did_emsg; |
| |
| ga_init2(&ga, 1, 80); |
| |
| if (eap->skip) |
| ++emsg_skip; |
| while (*arg != NUL && *arg != '|' && *arg != '\n') |
| { |
| p = arg; |
| if (eval1(&arg, &rettv, !eap->skip) == FAIL) |
| { |
| /* |
| * Report the invalid expression unless the expression evaluation |
| * has been cancelled due to an aborting error, an interrupt, or an |
| * exception. |
| */ |
| if (!aborting()) |
| EMSG2(_(e_invexpr2), p); |
| ret = FAIL; |
| break; |
| } |
| |
| if (!eap->skip) |
| { |
| p = get_tv_string(&rettv); |
| len = (int)STRLEN(p); |
| if (ga_grow(&ga, len + 2) == FAIL) |
| { |
| clear_tv(&rettv); |
| ret = FAIL; |
| break; |
| } |
| if (ga.ga_len) |
| ((char_u *)(ga.ga_data))[ga.ga_len++] = ' '; |
| STRCPY((char_u *)(ga.ga_data) + ga.ga_len, p); |
| ga.ga_len += len; |
| } |
| |
| clear_tv(&rettv); |
| arg = skipwhite(arg); |
| } |
| |
| if (ret != FAIL && ga.ga_data != NULL) |
| { |
| if (eap->cmdidx == CMD_echomsg) |
| { |
| MSG_ATTR(ga.ga_data, echo_attr); |
| out_flush(); |
| } |
| else if (eap->cmdidx == CMD_echoerr) |
| { |
| /* We don't want to abort following commands, restore did_emsg. */ |
| save_did_emsg = did_emsg; |
| EMSG((char_u *)ga.ga_data); |
| if (!force_abort) |
| did_emsg = save_did_emsg; |
| } |
| else if (eap->cmdidx == CMD_execute) |
| do_cmdline((char_u *)ga.ga_data, |
| eap->getline, eap->cookie, DOCMD_NOWAIT|DOCMD_VERBOSE); |
| } |
| |
| ga_clear(&ga); |
| |
| if (eap->skip) |
| --emsg_skip; |
| |
| eap->nextcmd = check_nextcmd(arg); |
| } |
| |
| /* |
| * Find window specified by "vp" in tabpage "tp". |
| */ |
| win_T * |
| find_win_by_nr( |
| typval_T *vp, |
| tabpage_T *tp UNUSED) /* NULL for current tab page */ |
| { |
| #ifdef FEAT_WINDOWS |
| win_T *wp; |
| #endif |
| int nr; |
| |
| nr = (int)get_tv_number_chk(vp, NULL); |
| |
| #ifdef FEAT_WINDOWS |
| if (nr < 0) |
| return NULL; |
| if (nr == 0) |
| return curwin; |
| |
| FOR_ALL_WINDOWS_IN_TAB(tp, wp) |
| { |
| if (nr >= LOWEST_WIN_ID) |
| { |
| if (wp->w_id == nr) |
| return wp; |
| } |
| else if (--nr <= 0) |
| break; |
| } |
| if (nr >= LOWEST_WIN_ID) |
| return NULL; |
| return wp; |
| #else |
| if (nr == 0 || nr == 1 || nr == curwin->w_id) |
| return curwin; |
| return NULL; |
| #endif |
| } |
| |
| /* |
| * Find window specified by "wvp" in tabpage "tvp". |
| */ |
| win_T * |
| find_tabwin( |
| typval_T *wvp, /* VAR_UNKNOWN for current window */ |
| typval_T *tvp) /* VAR_UNKNOWN for current tab page */ |
| { |
| win_T *wp = NULL; |
| tabpage_T *tp = NULL; |
| long n; |
| |
| if (wvp->v_type != VAR_UNKNOWN) |
| { |
| if (tvp->v_type != VAR_UNKNOWN) |
| { |
| n = (long)get_tv_number(tvp); |
| if (n >= 0) |
| tp = find_tabpage(n); |
| } |
| else |
| tp = curtab; |
| |
| if (tp != NULL) |
| wp = find_win_by_nr(wvp, tp); |
| } |
| else |
| wp = curwin; |
| |
| return wp; |
| } |
| |
| /* |
| * getwinvar() and gettabwinvar() |
| */ |
| void |
| getwinvar( |
| typval_T *argvars, |
| typval_T *rettv, |
| int off) /* 1 for gettabwinvar() */ |
| { |
| win_T *win; |
| char_u *varname; |
| dictitem_T *v; |
| tabpage_T *tp = NULL; |
| int done = FALSE; |
| #ifdef FEAT_WINDOWS |
| win_T *oldcurwin; |
| tabpage_T *oldtabpage; |
| int need_switch_win; |
| #endif |
| |
| #ifdef FEAT_WINDOWS |
| if (off == 1) |
| tp = find_tabpage((int)get_tv_number_chk(&argvars[0], NULL)); |
| else |
| tp = curtab; |
| #endif |
| win = find_win_by_nr(&argvars[off], tp); |
| varname = get_tv_string_chk(&argvars[off + 1]); |
| ++emsg_off; |
| |
| rettv->v_type = VAR_STRING; |
| rettv->vval.v_string = NULL; |
| |
| if (win != NULL && varname != NULL) |
| { |
| #ifdef FEAT_WINDOWS |
| /* Set curwin to be our win, temporarily. Also set the tabpage, |
| * otherwise the window is not valid. Only do this when needed, |
| * autocommands get blocked. */ |
| need_switch_win = !(tp == curtab && win == curwin); |
| if (!need_switch_win |
| || switch_win(&oldcurwin, &oldtabpage, win, tp, TRUE) == OK) |
| #endif |
| { |
| if (*varname == '&') |
| { |
| if (varname[1] == NUL) |
| { |
| /* get all window-local options in a dict */ |
| dict_T *opts = get_winbuf_options(FALSE); |
| |
| if (opts != NULL) |
| { |
| rettv->v_type = VAR_DICT; |
| rettv->vval.v_dict = opts; |
| ++opts->dv_refcount; |
| done = TRUE; |
| } |
| } |
| else if (get_option_tv(&varname, rettv, 1) == OK) |
| /* window-local-option */ |
| done = TRUE; |
| } |
| else |
| { |
| /* Look up the variable. */ |
| /* Let getwinvar({nr}, "") return the "w:" dictionary. */ |
| v = find_var_in_ht(&win->w_vars->dv_hashtab, 'w', |
| varname, FALSE); |
| if (v != NULL) |
| { |
| copy_tv(&v->di_tv, rettv); |
| done = TRUE; |
| } |
| } |
| } |
| |
| #ifdef FEAT_WINDOWS |
| if (need_switch_win) |
| /* restore previous notion of curwin */ |
| restore_win(oldcurwin, oldtabpage, TRUE); |
| #endif |
| } |
| |
| if (!done && argvars[off + 2].v_type != VAR_UNKNOWN) |
| /* use the default return value */ |
| copy_tv(&argvars[off + 2], rettv); |
| |
| --emsg_off; |
| } |
| |
| /* |
| * "setwinvar()" and "settabwinvar()" functions |
| */ |
| void |
| setwinvar(typval_T *argvars, typval_T *rettv UNUSED, int off) |
| { |
| win_T *win; |
| #ifdef FEAT_WINDOWS |
| win_T *save_curwin; |
| tabpage_T *save_curtab; |
| int need_switch_win; |
| #endif |
| char_u *varname, *winvarname; |
| typval_T *varp; |
| char_u nbuf[NUMBUFLEN]; |
| tabpage_T *tp = NULL; |
| |
| if (check_restricted() || check_secure()) |
| return; |
| |
| #ifdef FEAT_WINDOWS |
| if (off == 1) |
| tp = find_tabpage((int)get_tv_number_chk(&argvars[0], NULL)); |
| else |
| tp = curtab; |
| #endif |
| win = find_win_by_nr(&argvars[off], tp); |
| varname = get_tv_string_chk(&argvars[off + 1]); |
| varp = &argvars[off + 2]; |
| |
| if (win != NULL && varname != NULL && varp != NULL) |
| { |
| #ifdef FEAT_WINDOWS |
| need_switch_win = !(tp == curtab && win == curwin); |
| if (!need_switch_win |
| || switch_win(&save_curwin, &save_curtab, win, tp, TRUE) == OK) |
| #endif |
| { |
| if (*varname == '&') |
| { |
| long numval; |
| char_u *strval; |
| int error = FALSE; |
| |
| ++varname; |
| numval = (long)get_tv_number_chk(varp, &error); |
| strval = get_tv_string_buf_chk(varp, nbuf); |
| if (!error && strval != NULL) |
| set_option_value(varname, numval, strval, OPT_LOCAL); |
| } |
| else |
| { |
| winvarname = alloc((unsigned)STRLEN(varname) + 3); |
| if (winvarname != NULL) |
| { |
| STRCPY(winvarname, "w:"); |
| STRCPY(winvarname + 2, varname); |
| set_var(winvarname, varp, TRUE); |
| vim_free(winvarname); |
| } |
| } |
| } |
| #ifdef FEAT_WINDOWS |
| if (need_switch_win) |
| restore_win(save_curwin, save_curtab, TRUE); |
| #endif |
| } |
| } |
| |
| /* |
| * Skip over the name of an option: "&option", "&g:option" or "&l:option". |
| * "arg" points to the "&" or '+' when called, to "option" when returning. |
| * Returns NULL when no option name found. Otherwise pointer to the char |
| * after the option name. |
| */ |
| static char_u * |
| find_option_end(char_u **arg, int *opt_flags) |
| { |
| char_u *p = *arg; |
| |
| ++p; |
| if (*p == 'g' && p[1] == ':') |
| { |
| *opt_flags = OPT_GLOBAL; |
| p += 2; |
| } |
| else if (*p == 'l' && p[1] == ':') |
| { |
| *opt_flags = OPT_LOCAL; |
| p += 2; |
| } |
| else |
| *opt_flags = 0; |
| |
| if (!ASCII_ISALPHA(*p)) |
| return NULL; |
| *arg = p; |
| |
| if (p[0] == 't' && p[1] == '_' && p[2] != NUL && p[3] != NUL) |
| p += 4; /* termcap option */ |
| else |
| while (ASCII_ISALPHA(*p)) |
| ++p; |
| return p; |
| } |
| |
| /* |
| * Return the autoload script name for a function or variable name. |
| * Returns NULL when out of memory. |
| */ |
| char_u * |
| autoload_name(char_u *name) |
| { |
| char_u *p; |
| char_u *scriptname; |
| |
| /* Get the script file name: replace '#' with '/', append ".vim". */ |
| scriptname = alloc((unsigned)(STRLEN(name) + 14)); |
| if (scriptname == NULL) |
| return FALSE; |
| STRCPY(scriptname, "autoload/"); |
| STRCAT(scriptname, name); |
| *vim_strrchr(scriptname, AUTOLOAD_CHAR) = NUL; |
| STRCAT(scriptname, ".vim"); |
| while ((p = vim_strchr(scriptname, AUTOLOAD_CHAR)) != NULL) |
| *p = '/'; |
| return scriptname; |
| } |
| |
| /* |
| * If "name" has a package name try autoloading the script for it. |
| * Return TRUE if a package was loaded. |
| */ |
| int |
| script_autoload( |
| char_u *name, |
| int reload) /* load script again when already loaded */ |
| { |
| char_u *p; |
| char_u *scriptname, *tofree; |
| int ret = FALSE; |
| int i; |
| |
| /* If there is no '#' after name[0] there is no package name. */ |
| p = vim_strchr(name, AUTOLOAD_CHAR); |
| if (p == NULL || p == name) |
| return FALSE; |
| |
| tofree = scriptname = autoload_name(name); |
| |
| /* Find the name in the list of previously loaded package names. Skip |
| * "autoload/", it's always the same. */ |
| for (i = 0; i < ga_loaded.ga_len; ++i) |
| if (STRCMP(((char_u **)ga_loaded.ga_data)[i] + 9, scriptname + 9) == 0) |
| break; |
| if (!reload && i < ga_loaded.ga_len) |
| ret = FALSE; /* was loaded already */ |
| else |
| { |
| /* Remember the name if it wasn't loaded already. */ |
| if (i == ga_loaded.ga_len && ga_grow(&ga_loaded, 1) == OK) |
| { |
| ((char_u **)ga_loaded.ga_data)[ga_loaded.ga_len++] = scriptname; |
| tofree = NULL; |
| } |
| |
| /* Try loading the package from $VIMRUNTIME/autoload/<name>.vim */ |
| if (source_runtime(scriptname, 0) == OK) |
| ret = TRUE; |
| } |
| |
| vim_free(tofree); |
| return ret; |
| } |
| |
| #if defined(FEAT_VIMINFO) || defined(FEAT_SESSION) |
| typedef enum |
| { |
| VAR_FLAVOUR_DEFAULT, /* doesn't start with uppercase */ |
| VAR_FLAVOUR_SESSION, /* starts with uppercase, some lower */ |
| VAR_FLAVOUR_VIMINFO /* all uppercase */ |
| } var_flavour_T; |
| |
| static var_flavour_T var_flavour(char_u *varname); |
| |
| static var_flavour_T |
| var_flavour(char_u *varname) |
| { |
| char_u *p = varname; |
| |
| if (ASCII_ISUPPER(*p)) |
| { |
| while (*(++p)) |
| if (ASCII_ISLOWER(*p)) |
| return VAR_FLAVOUR_SESSION; |
| return VAR_FLAVOUR_VIMINFO; |
| } |
| else |
| return VAR_FLAVOUR_DEFAULT; |
| } |
| #endif |
| |
| #if defined(FEAT_VIMINFO) || defined(PROTO) |
| /* |
| * Restore global vars that start with a capital from the viminfo file |
| */ |
| int |
| read_viminfo_varlist(vir_T *virp, int writing) |
| { |
| char_u *tab; |
| int type = VAR_NUMBER; |
| typval_T tv; |
| void *save_funccal; |
| |
| if (!writing && (find_viminfo_parameter('!') != NULL)) |
| { |
| tab = vim_strchr(virp->vir_line + 1, '\t'); |
| if (tab != NULL) |
| { |
| *tab++ = '\0'; /* isolate the variable name */ |
| switch (*tab) |
| { |
| case 'S': type = VAR_STRING; break; |
| #ifdef FEAT_FLOAT |
| case 'F': type = VAR_FLOAT; break; |
| #endif |
| case 'D': type = VAR_DICT; break; |
| case 'L': type = VAR_LIST; break; |
| case 'X': type = VAR_SPECIAL; break; |
| } |
| |
| tab = vim_strchr(tab, '\t'); |
| if (tab != NULL) |
| { |
| tv.v_type = type; |
| if (type == VAR_STRING || type == VAR_DICT || type == VAR_LIST) |
| tv.vval.v_string = viminfo_readstring(virp, |
| (int)(tab - virp->vir_line + 1), TRUE); |
| #ifdef FEAT_FLOAT |
| else if (type == VAR_FLOAT) |
| (void)string2float(tab + 1, &tv.vval.v_float); |
| #endif |
| else |
| tv.vval.v_number = atol((char *)tab + 1); |
| if (type == VAR_DICT || type == VAR_LIST) |
| { |
| typval_T *etv = eval_expr(tv.vval.v_string, NULL); |
| |
| if (etv == NULL) |
| /* Failed to parse back the dict or list, use it as a |
| * string. */ |
| tv.v_type = VAR_STRING; |
| else |
| { |
| vim_free(tv.vval.v_string); |
| tv = *etv; |
| vim_free(etv); |
| } |
| } |
| |
| /* when in a function use global variables */ |
| save_funccal = clear_current_funccal(); |
| set_var(virp->vir_line + 1, &tv, FALSE); |
| restore_current_funccal(save_funccal); |
| |
| if (tv.v_type == VAR_STRING) |
| vim_free(tv.vval.v_string); |
| else if (tv.v_type == VAR_DICT || tv.v_type == VAR_LIST) |
| clear_tv(&tv); |
| } |
| } |
| } |
| |
| return viminfo_readline(virp); |
| } |
| |
| /* |
| * Write global vars that start with a capital to the viminfo file |
| */ |
| void |
| write_viminfo_varlist(FILE *fp) |
| { |
| hashitem_T *hi; |
| dictitem_T *this_var; |
| int todo; |
| char *s = ""; |
| char_u *p; |
| char_u *tofree; |
| char_u numbuf[NUMBUFLEN]; |
| |
| if (find_viminfo_parameter('!') == NULL) |
| return; |
| |
| fputs(_("\n# global variables:\n"), fp); |
| |
| todo = (int)globvarht.ht_used; |
| for (hi = globvarht.ht_array; todo > 0; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| this_var = HI2DI(hi); |
| if (var_flavour(this_var->di_key) == VAR_FLAVOUR_VIMINFO) |
| { |
| switch (this_var->di_tv.v_type) |
| { |
| case VAR_STRING: s = "STR"; break; |
| case VAR_NUMBER: s = "NUM"; break; |
| case VAR_FLOAT: s = "FLO"; break; |
| case VAR_DICT: s = "DIC"; break; |
| case VAR_LIST: s = "LIS"; break; |
| case VAR_SPECIAL: s = "XPL"; break; |
| |
| case VAR_UNKNOWN: |
| case VAR_FUNC: |
| case VAR_PARTIAL: |
| case VAR_JOB: |
| case VAR_CHANNEL: |
| continue; |
| } |
| fprintf(fp, "!%s\t%s\t", this_var->di_key, s); |
| p = echo_string(&this_var->di_tv, &tofree, numbuf, 0); |
| if (p != NULL) |
| viminfo_writestring(fp, p); |
| vim_free(tofree); |
| } |
| } |
| } |
| } |
| #endif |
| |
| #if defined(FEAT_SESSION) || defined(PROTO) |
| int |
| store_session_globals(FILE *fd) |
| { |
| hashitem_T *hi; |
| dictitem_T *this_var; |
| int todo; |
| char_u *p, *t; |
| |
| todo = (int)globvarht.ht_used; |
| for (hi = globvarht.ht_array; todo > 0; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| --todo; |
| this_var = HI2DI(hi); |
| if ((this_var->di_tv.v_type == VAR_NUMBER |
| || this_var->di_tv.v_type == VAR_STRING) |
| && var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION) |
| { |
| /* Escape special characters with a backslash. Turn a LF and |
| * CR into \n and \r. */ |
| p = vim_strsave_escaped(get_tv_string(&this_var->di_tv), |
| (char_u *)"\\\"\n\r"); |
| if (p == NULL) /* out of memory */ |
| break; |
| for (t = p; *t != NUL; ++t) |
| if (*t == '\n') |
| *t = 'n'; |
| else if (*t == '\r') |
| *t = 'r'; |
| if ((fprintf(fd, "let %s = %c%s%c", |
| this_var->di_key, |
| (this_var->di_tv.v_type == VAR_STRING) ? '"' |
| : ' ', |
| p, |
| (this_var->di_tv.v_type == VAR_STRING) ? '"' |
| : ' ') < 0) |
| || put_eol(fd) == FAIL) |
| { |
| vim_free(p); |
| return FAIL; |
| } |
| vim_free(p); |
| } |
| #ifdef FEAT_FLOAT |
| else if (this_var->di_tv.v_type == VAR_FLOAT |
| && var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION) |
| { |
| float_T f = this_var->di_tv.vval.v_float; |
| int sign = ' '; |
| |
| if (f < 0) |
| { |
| f = -f; |
| sign = '-'; |
| } |
| if ((fprintf(fd, "let %s = %c%f", |
| this_var->di_key, sign, f) < 0) |
| || put_eol(fd) == FAIL) |
| return FAIL; |
| } |
| #endif |
| } |
| } |
| return OK; |
| } |
| #endif |
| |
| /* |
| * Display script name where an item was last set. |
| * Should only be invoked when 'verbose' is non-zero. |
| */ |
| void |
| last_set_msg(scid_T scriptID) |
| { |
| char_u *p; |
| |
| if (scriptID != 0) |
| { |
| p = home_replace_save(NULL, get_scriptname(scriptID)); |
| if (p != NULL) |
| { |
| verbose_enter(); |
| MSG_PUTS(_("\n\tLast set from ")); |
| MSG_PUTS(p); |
| vim_free(p); |
| verbose_leave(); |
| } |
| } |
| } |
| |
| /* reset v:option_new, v:option_old and v:option_type */ |
| void |
| reset_v_option_vars(void) |
| { |
| set_vim_var_string(VV_OPTION_NEW, NULL, -1); |
| set_vim_var_string(VV_OPTION_OLD, NULL, -1); |
| set_vim_var_string(VV_OPTION_TYPE, NULL, -1); |
| } |
| |
| /* |
| * Prepare "gap" for an assert error and add the sourcing position. |
| */ |
| void |
| prepare_assert_error(garray_T *gap) |
| { |
| char buf[NUMBUFLEN]; |
| |
| ga_init2(gap, 1, 100); |
| if (sourcing_name != NULL) |
| { |
| ga_concat(gap, sourcing_name); |
| if (sourcing_lnum > 0) |
| ga_concat(gap, (char_u *)" "); |
| } |
| if (sourcing_lnum > 0) |
| { |
| sprintf(buf, "line %ld", (long)sourcing_lnum); |
| ga_concat(gap, (char_u *)buf); |
| } |
| if (sourcing_name != NULL || sourcing_lnum > 0) |
| ga_concat(gap, (char_u *)": "); |
| } |
| |
| /* |
| * Add an assert error to v:errors. |
| */ |
| void |
| assert_error(garray_T *gap) |
| { |
| struct vimvar *vp = &vimvars[VV_ERRORS]; |
| |
| if (vp->vv_type != VAR_LIST || vimvars[VV_ERRORS].vv_list == NULL) |
| /* Make sure v:errors is a list. */ |
| set_vim_var_list(VV_ERRORS, list_alloc()); |
| list_append_string(vimvars[VV_ERRORS].vv_list, gap->ga_data, gap->ga_len); |
| } |
| |
| void |
| assert_equal_common(typval_T *argvars, assert_type_T atype) |
| { |
| garray_T ga; |
| |
| if (tv_equal(&argvars[0], &argvars[1], FALSE, FALSE) |
| != (atype == ASSERT_EQUAL)) |
| { |
| prepare_assert_error(&ga); |
| fill_assert_error(&ga, &argvars[2], NULL, &argvars[0], &argvars[1], |
| atype); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| } |
| |
| void |
| assert_match_common(typval_T *argvars, assert_type_T atype) |
| { |
| garray_T ga; |
| char_u buf1[NUMBUFLEN]; |
| char_u buf2[NUMBUFLEN]; |
| char_u *pat = get_tv_string_buf_chk(&argvars[0], buf1); |
| char_u *text = get_tv_string_buf_chk(&argvars[1], buf2); |
| |
| if (pat == NULL || text == NULL) |
| EMSG(_(e_invarg)); |
| else if (pattern_match(pat, text, FALSE) != (atype == ASSERT_MATCH)) |
| { |
| prepare_assert_error(&ga); |
| fill_assert_error(&ga, &argvars[2], NULL, &argvars[0], &argvars[1], |
| atype); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| } |
| |
| void |
| assert_inrange(typval_T *argvars) |
| { |
| garray_T ga; |
| int error = FALSE; |
| varnumber_T lower = get_tv_number_chk(&argvars[0], &error); |
| varnumber_T upper = get_tv_number_chk(&argvars[1], &error); |
| varnumber_T actual = get_tv_number_chk(&argvars[2], &error); |
| char_u *tofree; |
| char msg[200]; |
| char_u numbuf[NUMBUFLEN]; |
| |
| if (error) |
| return; |
| if (actual < lower || actual > upper) |
| { |
| prepare_assert_error(&ga); |
| if (argvars[3].v_type != VAR_UNKNOWN) |
| { |
| ga_concat(&ga, tv2string(&argvars[3], &tofree, numbuf, 0)); |
| vim_free(tofree); |
| } |
| else |
| { |
| vim_snprintf(msg, 200, "Expected range %ld - %ld, but got %ld", |
| (long)lower, (long)upper, (long)actual); |
| ga_concat(&ga, (char_u *)msg); |
| } |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| } |
| |
| /* |
| * Common for assert_true() and assert_false(). |
| */ |
| void |
| assert_bool(typval_T *argvars, int isTrue) |
| { |
| int error = FALSE; |
| garray_T ga; |
| |
| if (argvars[0].v_type == VAR_SPECIAL |
| && argvars[0].vval.v_number == (isTrue ? VVAL_TRUE : VVAL_FALSE)) |
| return; |
| if (argvars[0].v_type != VAR_NUMBER |
| || (get_tv_number_chk(&argvars[0], &error) == 0) == isTrue |
| || error) |
| { |
| prepare_assert_error(&ga); |
| fill_assert_error(&ga, &argvars[1], |
| (char_u *)(isTrue ? "True" : "False"), |
| NULL, &argvars[0], ASSERT_OTHER); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| } |
| |
| void |
| assert_exception(typval_T *argvars) |
| { |
| garray_T ga; |
| char_u *error = get_tv_string_chk(&argvars[0]); |
| |
| if (vimvars[VV_EXCEPTION].vv_str == NULL) |
| { |
| prepare_assert_error(&ga); |
| ga_concat(&ga, (char_u *)"v:exception is not set"); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| else if (error != NULL |
| && strstr((char *)vimvars[VV_EXCEPTION].vv_str, (char *)error) == NULL) |
| { |
| prepare_assert_error(&ga); |
| fill_assert_error(&ga, &argvars[1], NULL, &argvars[0], |
| &vimvars[VV_EXCEPTION].vv_tv, ASSERT_OTHER); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| } |
| |
| void |
| assert_fails(typval_T *argvars) |
| { |
| char_u *cmd = get_tv_string_chk(&argvars[0]); |
| garray_T ga; |
| |
| called_emsg = FALSE; |
| suppress_errthrow = TRUE; |
| emsg_silent = TRUE; |
| do_cmdline_cmd(cmd); |
| if (!called_emsg) |
| { |
| prepare_assert_error(&ga); |
| ga_concat(&ga, (char_u *)"command did not fail: "); |
| ga_concat(&ga, cmd); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| else if (argvars[1].v_type != VAR_UNKNOWN) |
| { |
| char_u buf[NUMBUFLEN]; |
| char *error = (char *)get_tv_string_buf_chk(&argvars[1], buf); |
| |
| if (error == NULL |
| || strstr((char *)vimvars[VV_ERRMSG].vv_str, error) == NULL) |
| { |
| prepare_assert_error(&ga); |
| fill_assert_error(&ga, &argvars[2], NULL, &argvars[1], |
| &vimvars[VV_ERRMSG].vv_tv, ASSERT_OTHER); |
| assert_error(&ga); |
| ga_clear(&ga); |
| } |
| } |
| |
| called_emsg = FALSE; |
| suppress_errthrow = FALSE; |
| emsg_silent = FALSE; |
| emsg_on_display = FALSE; |
| set_vim_var_string(VV_ERRMSG, NULL, 0); |
| } |
| |
| /* |
| * Append "str" to "gap", escaping unprintable characters. |
| * Changes NL to \n, CR to \r, etc. |
| */ |
| static void |
| ga_concat_esc(garray_T *gap, char_u *str) |
| { |
| char_u *p; |
| char_u buf[NUMBUFLEN]; |
| |
| if (str == NULL) |
| { |
| ga_concat(gap, (char_u *)"NULL"); |
| return; |
| } |
| |
| for (p = str; *p != NUL; ++p) |
| switch (*p) |
| { |
| case BS: ga_concat(gap, (char_u *)"\\b"); break; |
| case ESC: ga_concat(gap, (char_u *)"\\e"); break; |
| case FF: ga_concat(gap, (char_u *)"\\f"); break; |
| case NL: ga_concat(gap, (char_u *)"\\n"); break; |
| case TAB: ga_concat(gap, (char_u *)"\\t"); break; |
| case CAR: ga_concat(gap, (char_u *)"\\r"); break; |
| case '\\': ga_concat(gap, (char_u *)"\\\\"); break; |
| default: |
| if (*p < ' ') |
| { |
| vim_snprintf((char *)buf, NUMBUFLEN, "\\x%02x", *p); |
| ga_concat(gap, buf); |
| } |
| else |
| ga_append(gap, *p); |
| break; |
| } |
| } |
| |
| /* |
| * Fill "gap" with information about an assert error. |
| */ |
| void |
| fill_assert_error( |
| garray_T *gap, |
| typval_T *opt_msg_tv, |
| char_u *exp_str, |
| typval_T *exp_tv, |
| typval_T *got_tv, |
| assert_type_T atype) |
| { |
| char_u numbuf[NUMBUFLEN]; |
| char_u *tofree; |
| |
| if (opt_msg_tv->v_type != VAR_UNKNOWN) |
| { |
| ga_concat(gap, tv2string(opt_msg_tv, &tofree, numbuf, 0)); |
| vim_free(tofree); |
| } |
| else |
| { |
| if (atype == ASSERT_MATCH || atype == ASSERT_NOTMATCH) |
| ga_concat(gap, (char_u *)"Pattern "); |
| else |
| ga_concat(gap, (char_u *)"Expected "); |
| if (exp_str == NULL) |
| { |
| ga_concat_esc(gap, tv2string(exp_tv, &tofree, numbuf, 0)); |
| vim_free(tofree); |
| } |
| else |
| ga_concat_esc(gap, exp_str); |
| if (atype == ASSERT_MATCH) |
| ga_concat(gap, (char_u *)" does not match "); |
| else if (atype == ASSERT_NOTMATCH) |
| ga_concat(gap, (char_u *)" does match "); |
| else if (atype == ASSERT_NOTEQUAL) |
| ga_concat(gap, (char_u *)" differs from "); |
| else |
| ga_concat(gap, (char_u *)" but got "); |
| ga_concat_esc(gap, tv2string(got_tv, &tofree, numbuf, 0)); |
| vim_free(tofree); |
| } |
| } |
| |
| |
| #endif /* FEAT_EVAL */ |
| |
| |
| #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) || defined(PROTO) |
| |
| #ifdef WIN3264 |
| /* |
| * Functions for ":8" filename modifier: get 8.3 version of a filename. |
| */ |
| static int get_short_pathname(char_u **fnamep, char_u **bufp, int *fnamelen); |
| static int shortpath_for_invalid_fname(char_u **fname, char_u **bufp, int *fnamelen); |
| static int shortpath_for_partial(char_u **fnamep, char_u **bufp, int *fnamelen); |
| |
| /* |
| * Get the short path (8.3) for the filename in "fnamep". |
| * Only works for a valid file name. |
| * When the path gets longer "fnamep" is changed and the allocated buffer |
| * is put in "bufp". |
| * *fnamelen is the length of "fnamep" and set to 0 for a nonexistent path. |
| * Returns OK on success, FAIL on failure. |
| */ |
| static int |
| get_short_pathname(char_u **fnamep, char_u **bufp, int *fnamelen) |
| { |
| int l, len; |
| char_u *newbuf; |
| |
| len = *fnamelen; |
| l = GetShortPathName((LPSTR)*fnamep, (LPSTR)*fnamep, len); |
| if (l > len - 1) |
| { |
| /* If that doesn't work (not enough space), then save the string |
| * and try again with a new buffer big enough. */ |
| newbuf = vim_strnsave(*fnamep, l); |
| if (newbuf == NULL) |
| return FAIL; |
| |
| vim_free(*bufp); |
| *fnamep = *bufp = newbuf; |
| |
| /* Really should always succeed, as the buffer is big enough. */ |
| l = GetShortPathName((LPSTR)*fnamep, (LPSTR)*fnamep, l+1); |
| } |
| |
| *fnamelen = l; |
| return OK; |
| } |
| |
| /* |
| * Get the short path (8.3) for the filename in "fname". The converted |
| * path is returned in "bufp". |
| * |
| * Some of the directories specified in "fname" may not exist. This function |
| * will shorten the existing directories at the beginning of the path and then |
| * append the remaining non-existing path. |
| * |
| * fname - Pointer to the filename to shorten. On return, contains the |
| * pointer to the shortened pathname |
| * bufp - Pointer to an allocated buffer for the filename. |
| * fnamelen - Length of the filename pointed to by fname |
| * |
| * Returns OK on success (or nothing done) and FAIL on failure (out of memory). |
| */ |
| static int |
| shortpath_for_invalid_fname( |
| char_u **fname, |
| char_u **bufp, |
| int *fnamelen) |
| { |
| char_u *short_fname, *save_fname, *pbuf_unused; |
| char_u *endp, *save_endp; |
| char_u ch; |
| int old_len, len; |
| int new_len, sfx_len; |
| int retval = OK; |
| |
| /* Make a copy */ |
| old_len = *fnamelen; |
| save_fname = vim_strnsave(*fname, old_len); |
| pbuf_unused = NULL; |
| short_fname = NULL; |
| |
| endp = save_fname + old_len - 1; /* Find the end of the copy */ |
| save_endp = endp; |
| |
| /* |
| * Try shortening the supplied path till it succeeds by removing one |
| * directory at a time from the tail of the path. |
| */ |
| len = 0; |
| for (;;) |
| { |
| /* go back one path-separator */ |
| while (endp > save_fname && !after_pathsep(save_fname, endp + 1)) |
| --endp; |
| if (endp <= save_fname) |
| break; /* processed the complete path */ |
| |
| /* |
| * Replace the path separator with a NUL and try to shorten the |
| * resulting path. |
| */ |
| ch = *endp; |
| *endp = 0; |
| short_fname = save_fname; |
| len = (int)STRLEN(short_fname) + 1; |
| if (get_short_pathname(&short_fname, &pbuf_unused, &len) == FAIL) |
| { |
| retval = FAIL; |
| goto theend; |
| } |
| *endp = ch; /* preserve the string */ |
| |
| if (len > 0) |
| break; /* successfully shortened the path */ |
| |
| /* failed to shorten the path. Skip the path separator */ |
| --endp; |
| } |
| |
| if (len > 0) |
| { |
| /* |
| * Succeeded in shortening the path. Now concatenate the shortened |
| * path with the remaining path at the tail. |
| */ |
| |
| /* Compute the length of the new path. */ |
| sfx_len = (int)(save_endp - endp) + 1; |
| new_len = len + sfx_len; |
| |
| *fnamelen = new_len; |
| vim_free(*bufp); |
| if (new_len > old_len) |
| { |
| /* There is not enough space in the currently allocated string, |
| * copy it to a buffer big enough. */ |
| *fname = *bufp = vim_strnsave(short_fname, new_len); |
| if (*fname == NULL) |
| { |
| retval = FAIL; |
| goto theend; |
| } |
| } |
| else |
| { |
| /* Transfer short_fname to the main buffer (it's big enough), |
| * unless get_short_pathname() did its work in-place. */ |
| *fname = *bufp = save_fname; |
| if (short_fname != save_fname) |
| vim_strncpy(save_fname, short_fname, len); |
| save_fname = NULL; |
| } |
| |
| /* concat the not-shortened part of the path */ |
| vim_strncpy(*fname + len, endp, sfx_len); |
| (*fname)[new_len] = NUL; |
| } |
| |
| theend: |
| vim_free(pbuf_unused); |
| vim_free(save_fname); |
| |
| return retval; |
| } |
| |
| /* |
| * Get a pathname for a partial path. |
| * Returns OK for success, FAIL for failure. |
| */ |
| static int |
| shortpath_for_partial( |
| char_u **fnamep, |
| char_u **bufp, |
| int *fnamelen) |
| { |
| int sepcount, len, tflen; |
| char_u *p; |
| char_u *pbuf, *tfname; |
| int hasTilde; |
| |
| /* Count up the path separators from the RHS.. so we know which part |
| * of the path to return. */ |
| sepcount = 0; |
| for (p = *fnamep; p < *fnamep + *fnamelen; mb_ptr_adv(p)) |
| if (vim_ispathsep(*p)) |
| ++sepcount; |
| |
| /* Need full path first (use expand_env() to remove a "~/") */ |
| hasTilde = (**fnamep == '~'); |
| if (hasTilde) |
| pbuf = tfname = expand_env_save(*fnamep); |
| else |
| pbuf = tfname = FullName_save(*fnamep, FALSE); |
| |
| len = tflen = (int)STRLEN(tfname); |
| |
| if (get_short_pathname(&tfname, &pbuf, &len) == FAIL) |
| return FAIL; |
| |
| if (len == 0) |
| { |
| /* Don't have a valid filename, so shorten the rest of the |
| * path if we can. This CAN give us invalid 8.3 filenames, but |
| * there's not a lot of point in guessing what it might be. |
| */ |
| len = tflen; |
| if (shortpath_for_invalid_fname(&tfname, &pbuf, &len) == FAIL) |
| return FAIL; |
| } |
| |
| /* Count the paths backward to find the beginning of the desired string. */ |
| for (p = tfname + len - 1; p >= tfname; --p) |
| { |
| #ifdef FEAT_MBYTE |
| if (has_mbyte) |
| p -= mb_head_off(tfname, p); |
| #endif |
| if (vim_ispathsep(*p)) |
| { |
| if (sepcount == 0 || (hasTilde && sepcount == 1)) |
| break; |
| else |
| sepcount --; |
| } |
| } |
| if (hasTilde) |
| { |
| --p; |
| if (p >= tfname) |
| *p = '~'; |
| else |
| return FAIL; |
| } |
| else |
| ++p; |
| |
| /* Copy in the string - p indexes into tfname - allocated at pbuf */ |
| vim_free(*bufp); |
| *fnamelen = (int)STRLEN(p); |
| *bufp = pbuf; |
| *fnamep = p; |
| |
| return OK; |
| } |
| #endif /* WIN3264 */ |
| |
| /* |
| * Adjust a filename, according to a string of modifiers. |
| * *fnamep must be NUL terminated when called. When returning, the length is |
| * determined by *fnamelen. |
| * Returns VALID_ flags or -1 for failure. |
| * When there is an error, *fnamep is set to NULL. |
| */ |
| int |
| modify_fname( |
| char_u *src, /* string with modifiers */ |
| int *usedlen, /* characters after src that are used */ |
| char_u **fnamep, /* file name so far */ |
| char_u **bufp, /* buffer for allocated file name or NULL */ |
| int *fnamelen) /* length of fnamep */ |
| { |
| int valid = 0; |
| char_u *tail; |
| char_u *s, *p, *pbuf; |
| char_u dirname[MAXPATHL]; |
| int c; |
| int has_fullname = 0; |
| #ifdef WIN3264 |
| char_u *fname_start = *fnamep; |
| int has_shortname = 0; |
| #endif |
| |
| repeat: |
| /* ":p" - full path/file_name */ |
| if (src[*usedlen] == ':' && src[*usedlen + 1] == 'p') |
| { |
| has_fullname = 1; |
| |
| valid |= VALID_PATH; |
| *usedlen += 2; |
| |
| /* Expand "~/path" for all systems and "~user/path" for Unix and VMS */ |
| if ((*fnamep)[0] == '~' |
| #if !defined(UNIX) && !(defined(VMS) && defined(USER_HOME)) |
| && ((*fnamep)[1] == '/' |
| # ifdef BACKSLASH_IN_FILENAME |
| || (*fnamep)[1] == '\\' |
| # endif |
| || (*fnamep)[1] == NUL) |
| |
| #endif |
| ) |
| { |
| *fnamep = expand_env_save(*fnamep); |
| vim_free(*bufp); /* free any allocated file name */ |
| *bufp = *fnamep; |
| if (*fnamep == NULL) |
| return -1; |
| } |
| |
| /* When "/." or "/.." is used: force expansion to get rid of it. */ |
| for (p = *fnamep; *p != NUL; mb_ptr_adv(p)) |
| { |
| if (vim_ispathsep(*p) |
| && p[1] == '.' |
| && (p[2] == NUL |
| || vim_ispathsep(p[2]) |
| || (p[2] == '.' |
| && (p[3] == NUL || vim_ispathsep(p[3]))))) |
| break; |
| } |
| |
| /* FullName_save() is slow, don't use it when not needed. */ |
| if (*p != NUL || !vim_isAbsName(*fnamep)) |
| { |
| *fnamep = FullName_save(*fnamep, *p != NUL); |
| vim_free(*bufp); /* free any allocated file name */ |
| *bufp = *fnamep; |
| if (*fnamep == NULL) |
| return -1; |
| } |
| |
| #ifdef WIN3264 |
| # if _WIN32_WINNT >= 0x0500 |
| if (vim_strchr(*fnamep, '~') != NULL) |
| { |
| /* Expand 8.3 filename to full path. Needed to make sure the same |
| * file does not have two different names. |
| * Note: problem does not occur if _WIN32_WINNT < 0x0500. */ |
| p = alloc(_MAX_PATH + 1); |
| if (p != NULL) |
| { |
| if (GetLongPathName((LPSTR)*fnamep, (LPSTR)p, _MAX_PATH)) |
| { |
| vim_free(*bufp); |
| *bufp = *fnamep = p; |
| } |
| else |
| vim_free(p); |
| } |
| } |
| # endif |
| #endif |
| /* Append a path separator to a directory. */ |
| if (mch_isdir(*fnamep)) |
| { |
| /* Make room for one or two extra characters. */ |
| *fnamep = vim_strnsave(*fnamep, (int)STRLEN(*fnamep) + 2); |
| vim_free(*bufp); /* free any allocated file name */ |
| *bufp = *fnamep; |
| if (*fnamep == NULL) |
| return -1; |
| add_pathsep(*fnamep); |
| } |
| } |
| |
| /* ":." - path relative to the current directory */ |
| /* ":~" - path relative to the home directory */ |
| /* ":8" - shortname path - postponed till after */ |
| while (src[*usedlen] == ':' |
| && ((c = src[*usedlen + 1]) == '.' || c == '~' || c == '8')) |
| { |
| *usedlen += 2; |
| if (c == '8') |
| { |
| #ifdef WIN3264 |
| has_shortname = 1; /* Postpone this. */ |
| #endif |
| continue; |
| } |
| pbuf = NULL; |
| /* Need full path first (use expand_env() to remove a "~/") */ |
| if (!has_fullname) |
| { |
| if (c == '.' && **fnamep == '~') |
| p = pbuf = expand_env_save(*fnamep); |
| else |
| p = pbuf = FullName_save(*fnamep, FALSE); |
| } |
| else |
| p = *fnamep; |
| |
| has_fullname = 0; |
| |
| if (p != NULL) |
| { |
| if (c == '.') |
| { |
| mch_dirname(dirname, MAXPATHL); |
| s = shorten_fname(p, dirname); |
| if (s != NULL) |
| { |
| *fnamep = s; |
| if (pbuf != NULL) |
| { |
| vim_free(*bufp); /* free any allocated file name */ |
| *bufp = pbuf; |
| pbuf = NULL; |
| } |
| } |
| } |
| else |
| { |
| home_replace(NULL, p, dirname, MAXPATHL, TRUE); |
| /* Only replace it when it starts with '~' */ |
| if (*dirname == '~') |
| { |
| s = vim_strsave(dirname); |
| if (s != NULL) |
| { |
| *fnamep = s; |
| vim_free(*bufp); |
| *bufp = s; |
| } |
| } |
| } |
| vim_free(pbuf); |
| } |
| } |
| |
| tail = gettail(*fnamep); |
| *fnamelen = (int)STRLEN(*fnamep); |
| |
| /* ":h" - head, remove "/file_name", can be repeated */ |
| /* Don't remove the first "/" or "c:\" */ |
| while (src[*usedlen] == ':' && src[*usedlen + 1] == 'h') |
| { |
| valid |= VALID_HEAD; |
| *usedlen += 2; |
| s = get_past_head(*fnamep); |
| while (tail > s && after_pathsep(s, tail)) |
| mb_ptr_back(*fnamep, tail); |
| *fnamelen = (int)(tail - *fnamep); |
| #ifdef VMS |
| if (*fnamelen > 0) |
| *fnamelen += 1; /* the path separator is part of the path */ |
| #endif |
| if (*fnamelen == 0) |
| { |
| /* Result is empty. Turn it into "." to make ":cd %:h" work. */ |
| p = vim_strsave((char_u *)"."); |
| if (p == NULL) |
| return -1; |
| vim_free(*bufp); |
| *bufp = *fnamep = tail = p; |
| *fnamelen = 1; |
| } |
| else |
| { |
| while (tail > s && !after_pathsep(s, tail)) |
| mb_ptr_back(*fnamep, tail); |
| } |
| } |
| |
| /* ":8" - shortname */ |
| if (src[*usedlen] == ':' && src[*usedlen + 1] == '8') |
| { |
| *usedlen += 2; |
| #ifdef WIN3264 |
| has_shortname = 1; |
| #endif |
| } |
| |
| #ifdef WIN3264 |
| /* |
| * Handle ":8" after we have done 'heads' and before we do 'tails'. |
| */ |
| if (has_shortname) |
| { |
| /* Copy the string if it is shortened by :h and when it wasn't copied |
| * yet, because we are going to change it in place. Avoids changing |
| * the buffer name for "%:8". */ |
| if (*fnamelen < (int)STRLEN(*fnamep) || *fnamep == fname_start) |
| { |
| p = vim_strnsave(*fnamep, *fnamelen); |
| if (p == NULL) |
| return -1; |
| vim_free(*bufp); |
| *bufp = *fnamep = p; |
| } |
| |
| /* Split into two implementations - makes it easier. First is where |
| * there isn't a full name already, second is where there is. */ |
| if (!has_fullname && !vim_isAbsName(*fnamep)) |
| { |
| if (shortpath_for_partial(fnamep, bufp, fnamelen) == FAIL) |
| return -1; |
| } |
| else |
| { |
| int l = *fnamelen; |
| |
| /* Simple case, already have the full-name. |
| * Nearly always shorter, so try first time. */ |
| if (get_short_pathname(fnamep, bufp, &l) == FAIL) |
| return -1; |
| |
| if (l == 0) |
| { |
| /* Couldn't find the filename, search the paths. */ |
| l = *fnamelen; |
| if (shortpath_for_invalid_fname(fnamep, bufp, &l) == FAIL) |
| return -1; |
| } |
| *fnamelen = l; |
| } |
| } |
| #endif /* WIN3264 */ |
| |
| /* ":t" - tail, just the basename */ |
| if (src[*usedlen] == ':' && src[*usedlen + 1] == 't') |
| { |
| *usedlen += 2; |
| *fnamelen -= (int)(tail - *fnamep); |
| *fnamep = tail; |
| } |
| |
| /* ":e" - extension, can be repeated */ |
| /* ":r" - root, without extension, can be repeated */ |
| while (src[*usedlen] == ':' |
| && (src[*usedlen + 1] == 'e' || src[*usedlen + 1] == 'r')) |
| { |
| /* find a '.' in the tail: |
| * - for second :e: before the current fname |
| * - otherwise: The last '.' |
| */ |
| if (src[*usedlen + 1] == 'e' && *fnamep > tail) |
| s = *fnamep - 2; |
| else |
| s = *fnamep + *fnamelen - 1; |
| for ( ; s > tail; --s) |
| if (s[0] == '.') |
| break; |
| if (src[*usedlen + 1] == 'e') /* :e */ |
| { |
| if (s > tail) |
| { |
| *fnamelen += (int)(*fnamep - (s + 1)); |
| *fnamep = s + 1; |
| #ifdef VMS |
| /* cut version from the extension */ |
| s = *fnamep + *fnamelen - 1; |
| for ( ; s > *fnamep; --s) |
| if (s[0] == ';') |
| break; |
| if (s > *fnamep) |
| *fnamelen = s - *fnamep; |
| #endif |
| } |
| else if (*fnamep <= tail) |
| *fnamelen = 0; |
| } |
| else /* :r */ |
| { |
| if (s > tail) /* remove one extension */ |
| *fnamelen = (int)(s - *fnamep); |
| } |
| *usedlen += 2; |
| } |
| |
| /* ":s?pat?foo?" - substitute */ |
| /* ":gs?pat?foo?" - global substitute */ |
| if (src[*usedlen] == ':' |
| && (src[*usedlen + 1] == 's' |
| || (src[*usedlen + 1] == 'g' && src[*usedlen + 2] == 's'))) |
| { |
| char_u *str; |
| char_u *pat; |
| char_u *sub; |
| int sep; |
| char_u *flags; |
| int didit = FALSE; |
| |
| flags = (char_u *)""; |
| s = src + *usedlen + 2; |
| if (src[*usedlen + 1] == 'g') |
| { |
| flags = (char_u *)"g"; |
| ++s; |
| } |
| |
| sep = *s++; |
| if (sep) |
| { |
| /* find end of pattern */ |
| p = vim_strchr(s, sep); |
| if (p != NULL) |
| { |
| pat = vim_strnsave(s, (int)(p - s)); |
| if (pat != NULL) |
| { |
| s = p + 1; |
| /* find end of substitution */ |
| p = vim_strchr(s, sep); |
| if (p != NULL) |
| { |
| sub = vim_strnsave(s, (int)(p - s)); |
| str = vim_strnsave(*fnamep, *fnamelen); |
| if (sub != NULL && str != NULL) |
| { |
| *usedlen = (int)(p + 1 - src); |
| s = do_string_sub(str, pat, sub, NULL, flags); |
| if (s != NULL) |
| { |
| *fnamep = s; |
| *fnamelen = (int)STRLEN(s); |
| vim_free(*bufp); |
| *bufp = s; |
| didit = TRUE; |
| } |
| } |
| vim_free(sub); |
| vim_free(str); |
| } |
| vim_free(pat); |
| } |
| } |
| /* after using ":s", repeat all the modifiers */ |
| if (didit) |
| goto repeat; |
| } |
| } |
| |
| if (src[*usedlen] == ':' && src[*usedlen + 1] == 'S') |
| { |
| /* vim_strsave_shellescape() needs a NUL terminated string. */ |
| c = (*fnamep)[*fnamelen]; |
| if (c != NUL) |
| (*fnamep)[*fnamelen] = NUL; |
| p = vim_strsave_shellescape(*fnamep, FALSE, FALSE); |
| if (c != NUL) |
| (*fnamep)[*fnamelen] = c; |
| if (p == NULL) |
| return -1; |
| vim_free(*bufp); |
| *bufp = *fnamep = p; |
| *fnamelen = (int)STRLEN(p); |
| *usedlen += 2; |
| } |
| |
| return valid; |
| } |
| |
| /* |
| * Perform a substitution on "str" with pattern "pat" and substitute "sub". |
| * When "sub" is NULL "expr" is used, must be a VAR_FUNC or VAR_PARTIAL. |
| * "flags" can be "g" to do a global substitute. |
| * Returns an allocated string, NULL for error. |
| */ |
| char_u * |
| do_string_sub( |
| char_u *str, |
| char_u *pat, |
| char_u *sub, |
| typval_T *expr, |
| char_u *flags) |
| { |
| int sublen; |
| regmatch_T regmatch; |
| int i; |
| int do_all; |
| char_u *tail; |
| char_u *end; |
| garray_T ga; |
| char_u *ret; |
| char_u *save_cpo; |
| char_u *zero_width = NULL; |
| |
| /* Make 'cpoptions' empty, so that the 'l' flag doesn't work here */ |
| save_cpo = p_cpo; |
| p_cpo = empty_option; |
| |
| ga_init2(&ga, 1, 200); |
| |
| do_all = (flags[0] == 'g'); |
| |
| regmatch.rm_ic = p_ic; |
| regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING); |
| if (regmatch.regprog != NULL) |
| { |
| tail = str; |
| end = str + STRLEN(str); |
| while (vim_regexec_nl(®match, str, (colnr_T)(tail - str))) |
| { |
| /* Skip empty match except for first match. */ |
| if (regmatch.startp[0] == regmatch.endp[0]) |
| { |
| if (zero_width == regmatch.startp[0]) |
| { |
| /* avoid getting stuck on a match with an empty string */ |
| i = MB_PTR2LEN(tail); |
| mch_memmove((char_u *)ga.ga_data + ga.ga_len, tail, |
| (size_t)i); |
| ga.ga_len += i; |
| tail += i; |
| continue; |
| } |
| zero_width = regmatch.startp[0]; |
| } |
| |
| /* |
| * Get some space for a temporary buffer to do the substitution |
| * into. It will contain: |
| * - The text up to where the match is. |
| * - The substituted text. |
| * - The text after the match. |
| */ |
| sublen = vim_regsub(®match, sub, expr, tail, FALSE, TRUE, FALSE); |
| if (ga_grow(&ga, (int)((end - tail) + sublen - |
| (regmatch.endp[0] - regmatch.startp[0]))) == FAIL) |
| { |
| ga_clear(&ga); |
| break; |
| } |
| |
| /* copy the text up to where the match is */ |
| i = (int)(regmatch.startp[0] - tail); |
| mch_memmove((char_u *)ga.ga_data + ga.ga_len, tail, (size_t)i); |
| /* add the substituted text */ |
| (void)vim_regsub(®match, sub, expr, (char_u *)ga.ga_data |
| + ga.ga_len + i, TRUE, TRUE, FALSE); |
| ga.ga_len += i + sublen - 1; |
| tail = regmatch.endp[0]; |
| if (*tail == NUL) |
| break; |
| if (!do_all) |
| break; |
| } |
| |
| if (ga.ga_data != NULL) |
| STRCPY((char *)ga.ga_data + ga.ga_len, tail); |
| |
| vim_regfree(regmatch.regprog); |
| } |
| |
| ret = vim_strsave(ga.ga_data == NULL ? str : (char_u *)ga.ga_data); |
| ga_clear(&ga); |
| if (p_cpo == empty_option) |
| p_cpo = save_cpo; |
| else |
| /* Darn, evaluating {sub} expression or {expr} changed the value. */ |
| free_string_option(save_cpo); |
| |
| return ret; |
| } |
| |
| static int |
| filter_map_one(typval_T *tv, typval_T *expr, int map, int *remp) |
| { |
| typval_T rettv; |
| typval_T argv[3]; |
| char_u buf[NUMBUFLEN]; |
| char_u *s; |
| int retval = FAIL; |
| int dummy; |
| |
| copy_tv(tv, &vimvars[VV_VAL].vv_tv); |
| argv[0] = vimvars[VV_KEY].vv_tv; |
| argv[1] = vimvars[VV_VAL].vv_tv; |
| if (expr->v_type == VAR_FUNC) |
| { |
| s = expr->vval.v_string; |
| if (call_func(s, (int)STRLEN(s), &rettv, 2, argv, NULL, |
| 0L, 0L, &dummy, TRUE, NULL, NULL) == FAIL) |
| goto theend; |
| } |
| else if (expr->v_type == VAR_PARTIAL) |
| { |
| partial_T *partial = expr->vval.v_partial; |
| |
| s = partial_name(partial); |
| if (call_func(s, (int)STRLEN(s), &rettv, 2, argv, NULL, |
| 0L, 0L, &dummy, TRUE, partial, NULL) == FAIL) |
| goto theend; |
| } |
| else |
| { |
| s = get_tv_string_buf_chk(expr, buf); |
| if (s == NULL) |
| goto theend; |
| s = skipwhite(s); |
| if (eval1(&s, &rettv, TRUE) == FAIL) |
| goto theend; |
| if (*s != NUL) /* check for trailing chars after expr */ |
| { |
| EMSG2(_(e_invexpr2), s); |
| goto theend; |
| } |
| } |
| if (map) |
| { |
| /* map(): replace the list item value */ |
| clear_tv(tv); |
| rettv.v_lock = 0; |
| *tv = rettv; |
| } |
| else |
| { |
| int error = FALSE; |
| |
| /* filter(): when expr is zero remove the item */ |
| *remp = (get_tv_number_chk(&rettv, &error) == 0); |
| clear_tv(&rettv); |
| /* On type error, nothing has been removed; return FAIL to stop the |
| * loop. The error message was given by get_tv_number_chk(). */ |
| if (error) |
| goto theend; |
| } |
| retval = OK; |
| theend: |
| clear_tv(&vimvars[VV_VAL].vv_tv); |
| return retval; |
| } |
| |
| |
| /* |
| * Implementation of map() and filter(). |
| */ |
| void |
| filter_map(typval_T *argvars, typval_T *rettv, int map) |
| { |
| typval_T *expr; |
| listitem_T *li, *nli; |
| list_T *l = NULL; |
| dictitem_T *di; |
| hashtab_T *ht; |
| hashitem_T *hi; |
| dict_T *d = NULL; |
| typval_T save_val; |
| typval_T save_key; |
| int rem; |
| int todo; |
| char_u *ermsg = (char_u *)(map ? "map()" : "filter()"); |
| char_u *arg_errmsg = (char_u *)(map ? N_("map() argument") |
| : N_("filter() argument")); |
| int save_did_emsg; |
| int idx = 0; |
| |
| if (argvars[0].v_type == VAR_LIST) |
| { |
| if ((l = argvars[0].vval.v_list) == NULL |
| || (!map && tv_check_lock(l->lv_lock, arg_errmsg, TRUE))) |
| return; |
| } |
| else if (argvars[0].v_type == VAR_DICT) |
| { |
| if ((d = argvars[0].vval.v_dict) == NULL |
| || (!map && tv_check_lock(d->dv_lock, arg_errmsg, TRUE))) |
| return; |
| } |
| else |
| { |
| EMSG2(_(e_listdictarg), ermsg); |
| return; |
| } |
| |
| expr = &argvars[1]; |
| /* On type errors, the preceding call has already displayed an error |
| * message. Avoid a misleading error message for an empty string that |
| * was not passed as argument. */ |
| if (expr->v_type != VAR_UNKNOWN) |
| { |
| prepare_vimvar(VV_VAL, &save_val); |
| |
| /* We reset "did_emsg" to be able to detect whether an error |
| * occurred during evaluation of the expression. */ |
| save_did_emsg = did_emsg; |
| did_emsg = FALSE; |
| |
| prepare_vimvar(VV_KEY, &save_key); |
| if (argvars[0].v_type == VAR_DICT) |
| { |
| vimvars[VV_KEY].vv_type = VAR_STRING; |
| |
| ht = &d->dv_hashtab; |
| hash_lock(ht); |
| todo = (int)ht->ht_used; |
| for (hi = ht->ht_array; todo > 0; ++hi) |
| { |
| if (!HASHITEM_EMPTY(hi)) |
| { |
| int r; |
| |
| --todo; |
| di = HI2DI(hi); |
| if (map && |
| (tv_check_lock(di->di_tv.v_lock, arg_errmsg, TRUE) |
| || var_check_ro(di->di_flags, arg_errmsg, TRUE))) |
| break; |
| vimvars[VV_KEY].vv_str = vim_strsave(di->di_key); |
| r = filter_map_one(&di->di_tv, expr, map, &rem); |
| clear_tv(&vimvars[VV_KEY].vv_tv); |
| if (r == FAIL || did_emsg) |
| break; |
| if (!map && rem) |
| { |
| if (var_check_fixed(di->di_flags, arg_errmsg, TRUE) |
| || var_check_ro(di->di_flags, arg_errmsg, TRUE)) |
| break; |
| dictitem_remove(d, di); |
| } |
| } |
| } |
| hash_unlock(ht); |
| } |
| else |
| { |
| vimvars[VV_KEY].vv_type = VAR_NUMBER; |
| |
| for (li = l->lv_first; li != NULL; li = nli) |
| { |
| if (map && tv_check_lock(li->li_tv.v_lock, arg_errmsg, TRUE)) |
| break; |
| nli = li->li_next; |
| vimvars[VV_KEY].vv_nr = idx; |
| if (filter_map_one(&li->li_tv, expr, map, &rem) == FAIL |
| || did_emsg) |
| break; |
| if (!map && rem) |
| listitem_remove(l, li); |
| ++idx; |
| } |
| } |
| |
| restore_vimvar(VV_KEY, &save_key); |
| restore_vimvar(VV_VAL, &save_val); |
| |
| did_emsg |= save_did_emsg; |
| } |
| |
| copy_tv(&argvars[0], rettv); |
| } |
| |
| #endif /* defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) */ |