| /* Source-language-related definitions for GDB. |
| Copyright 1991, 1992 Free Software Foundation, Inc. |
| Contributed by the Department of Computer Science at the State University |
| of New York at Buffalo. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #if !defined (LANGUAGE_H) |
| #define LANGUAGE_H 1 |
| |
| #ifdef __STDC__ /* Forward decls for prototypes */ |
| struct value; |
| struct objfile; |
| struct expression; |
| /* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */ |
| #endif |
| |
| /* This used to be included to configure GDB for one or more specific |
| languages. Now it is shortcutted to configure for all of them. FIXME. */ |
| /* #include "lang_def.h" */ |
| #define _LANG_c |
| #define _LANG_m2 |
| #define _LANG_chill |
| #define _LANG_fortran |
| |
| #define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims */ |
| |
| /* range_mode == |
| range_mode_auto: range_check set automatically to default of language. |
| range_mode_manual: range_check set manually by user. */ |
| |
| extern enum range_mode {range_mode_auto, range_mode_manual} range_mode; |
| |
| /* range_check == |
| range_check_on: Ranges are checked in GDB expressions, producing errors. |
| range_check_warn: Ranges are checked, producing warnings. |
| range_check_off: Ranges are not checked in GDB expressions. */ |
| |
| extern enum range_check |
| {range_check_off, range_check_warn, range_check_on} range_check; |
| |
| /* type_mode == |
| type_mode_auto: type_check set automatically to default of language |
| type_mode_manual: type_check set manually by user. */ |
| |
| extern enum type_mode {type_mode_auto, type_mode_manual} type_mode; |
| |
| /* type_check == |
| type_check_on: Types are checked in GDB expressions, producing errors. |
| type_check_warn: Types are checked, producing warnings. |
| type_check_off: Types are not checked in GDB expressions. */ |
| |
| extern enum type_check |
| {type_check_off, type_check_warn, type_check_on} type_check; |
| |
| /* Information for doing language dependent formatting of printed values. */ |
| |
| struct language_format_info |
| { |
| /* The format that can be passed directly to standard C printf functions |
| to generate a completely formatted value in the format appropriate for |
| the language. */ |
| |
| char *la_format; |
| |
| /* The prefix to be used when directly printing a value, or constructing |
| a standard C printf format. This generally is everything up to the |
| conversion specification (the part introduced by the '%' character |
| and terminated by the conversion specifier character). */ |
| |
| char *la_format_prefix; |
| |
| /* The conversion specifier. This is generally everything after the |
| field width and precision, typically only a single character such |
| as 'o' for octal format or 'x' for hexadecimal format. */ |
| |
| char *la_format_specifier; |
| |
| /* The suffix to be used when directly printing a value, or constructing |
| a standard C printf format. This generally is everything after the |
| conversion specification (the part introduced by the '%' character |
| and terminated by the conversion specifier character). */ |
| |
| char *la_format_suffix; /* Suffix for custom format string */ |
| }; |
| |
| /* Structure tying together assorted information about a language. */ |
| |
| struct language_defn |
| { |
| /* Name of the language */ |
| |
| char *la_name; |
| |
| /* its symtab language-enum (defs.h) */ |
| |
| enum language la_language; |
| |
| /* Its builtin types. This is a vector ended by a NULL pointer. These |
| types can be specified by name in parsing types in expressions, |
| regardless of whether the program being debugged actually defines |
| such a type. */ |
| |
| struct type ** const *la_builtin_type_vector; |
| |
| /* Default range checking */ |
| |
| enum range_check la_range_check; |
| |
| /* Default type checking */ |
| |
| enum type_check la_type_check; |
| |
| /* Parser function. */ |
| |
| int (*la_parser) PARAMS((void)); |
| |
| /* Parser error function */ |
| |
| void (*la_error) PARAMS ((char *)); |
| |
| /* Evaluate an expression. */ |
| struct value * (*evaluate_exp) PARAMS ((struct type *, struct expression *, |
| int *, enum noside)); |
| |
| void (*la_printchar) PARAMS ((int ch, GDB_FILE *stream)); |
| |
| void (*la_printstr) PARAMS ((GDB_FILE *stream, char *string, |
| unsigned int length, int width, |
| int force_ellipses)); |
| |
| void (*la_emitchar) PARAMS ((int ch, GDB_FILE *stream, int quoter)); |
| |
| struct type *(*la_fund_type) PARAMS ((struct objfile *, int)); |
| |
| /* Print a type using syntax appropriate for this language. */ |
| |
| void (*la_print_type) PARAMS ((struct type *, char *, GDB_FILE *, int, int)); |
| |
| /* Print a value using syntax appropriate for this language. */ |
| |
| int (*la_val_print) PARAMS ((struct type *, char *, int, CORE_ADDR, GDB_FILE *, |
| int, int, int, enum val_prettyprint)); |
| |
| /* Print a top-level value using syntax appropriate for this language. */ |
| |
| int (*la_value_print) PARAMS ((struct value *, GDB_FILE *, |
| int, enum val_prettyprint)); |
| |
| /* Base 2 (binary) formats. */ |
| |
| struct language_format_info la_binary_format; |
| |
| /* Base 8 (octal) formats. */ |
| |
| struct language_format_info la_octal_format; |
| |
| /* Base 10 (decimal) formats */ |
| |
| struct language_format_info la_decimal_format; |
| |
| /* Base 16 (hexadecimal) formats */ |
| |
| struct language_format_info la_hex_format; |
| |
| /* Table for printing expressions */ |
| |
| const struct op_print *la_op_print_tab; |
| |
| /* Zero if the language has first-class arrays. True if there are no |
| array values, and array objects decay to pointers, as in C. */ |
| |
| char c_style_arrays; |
| |
| /* Index to use for extracting the first element of a string. */ |
| char string_lower_bound; |
| |
| /* Type of elements of strings. */ |
| struct type **string_char_type; |
| |
| /* Add fields above this point, so the magic number is always last. */ |
| /* Magic number for compat checking */ |
| |
| long la_magic; |
| |
| }; |
| |
| #define LANG_MAGIC 910823L |
| |
| /* Pointer to the language_defn for our current language. This pointer |
| always points to *some* valid struct; it can be used without checking |
| it for validity. |
| |
| The current language affects expression parsing and evaluation |
| (FIXME: it might be cleaner to make the evaluation-related stuff |
| separate exp_opcodes for each different set of semantics. We |
| should at least think this through more clearly with respect to |
| what happens if the language is changed between parsing and |
| evaluation) and printing of things like types and arrays. It does |
| *not* affect symbol-reading-- each source file in a symbol-file has |
| its own language and we should keep track of that regardless of the |
| language when symbols are read. If we want some manual setting for |
| the language of symbol files (e.g. detecting when ".c" files are |
| C++), it should be a seprate setting from the current_language. */ |
| |
| extern const struct language_defn *current_language; |
| |
| /* Pointer to the language_defn expected by the user, e.g. the language |
| of main(), or the language we last mentioned in a message, or C. */ |
| |
| extern const struct language_defn *expected_language; |
| |
| /* language_mode == |
| language_mode_auto: current_language automatically set upon selection |
| of scope (e.g. stack frame) |
| language_mode_manual: current_language set only by user. */ |
| |
| extern enum language_mode |
| {language_mode_auto, language_mode_manual} language_mode; |
| |
| /* These macros define the behaviour of the expression |
| evaluator. */ |
| |
| /* Should we strictly type check expressions? */ |
| #define STRICT_TYPE (type_check != type_check_off) |
| |
| /* Should we range check values against the domain of their type? */ |
| #define RANGE_CHECK (range_check != range_check_off) |
| |
| /* "cast" really means conversion */ |
| /* FIXME -- should be a setting in language_defn */ |
| #define CAST_IS_CONVERSION (current_language->la_language == language_c || \ |
| current_language->la_language == language_cplus) |
| |
| extern void |
| language_info PARAMS ((int)); |
| |
| extern enum language |
| set_language PARAMS ((enum language)); |
| |
| |
| /* This page contains functions that return things that are |
| specific to languages. Each of these functions is based on |
| the current setting of working_lang, which the user sets |
| with the "set language" command. */ |
| |
| #define create_fundamental_type(objfile,typeid) \ |
| (current_language->la_fund_type(objfile, typeid)) |
| |
| #define LA_PRINT_TYPE(type,varstring,stream,show,level) \ |
| (current_language->la_print_type(type,varstring,stream,show,level)) |
| |
| #define LA_VAL_PRINT(type,valaddr,offset,addr,stream,fmt,deref,recurse,pretty) \ |
| (current_language->la_val_print(type,valaddr,offset,addr,stream,fmt,deref, \ |
| recurse,pretty)) |
| #define LA_VALUE_PRINT(val,stream,fmt,pretty) \ |
| (current_language->la_value_print(val,stream,fmt,pretty)) |
| |
| /* Return a format string for printf that will print a number in one of |
| the local (language-specific) formats. Result is static and is |
| overwritten by the next call. Takes printf options like "08" or "l" |
| (to produce e.g. %08x or %lx). */ |
| |
| #define local_binary_format() \ |
| (current_language->la_binary_format.la_format) |
| #define local_binary_format_prefix() \ |
| (current_language->la_binary_format.la_format_prefix) |
| #define local_binary_format_specifier() \ |
| (current_language->la_binary_format.la_format_specifier) |
| #define local_binary_format_suffix() \ |
| (current_language->la_binary_format.la_format_suffix) |
| |
| #define local_octal_format() \ |
| (current_language->la_octal_format.la_format) |
| #define local_octal_format_prefix() \ |
| (current_language->la_octal_format.la_format_prefix) |
| #define local_octal_format_specifier() \ |
| (current_language->la_octal_format.la_format_specifier) |
| #define local_octal_format_suffix() \ |
| (current_language->la_octal_format.la_format_suffix) |
| |
| #define local_decimal_format() \ |
| (current_language->la_decimal_format.la_format) |
| #define local_decimal_format_prefix() \ |
| (current_language->la_decimal_format.la_format_prefix) |
| #define local_decimal_format_specifier() \ |
| (current_language->la_decimal_format.la_format_specifier) |
| #define local_decimal_format_suffix() \ |
| (current_language->la_decimal_format.la_format_suffix) |
| |
| #define local_hex_format() \ |
| (current_language->la_hex_format.la_format) |
| #define local_hex_format_prefix() \ |
| (current_language->la_hex_format.la_format_prefix) |
| #define local_hex_format_specifier() \ |
| (current_language->la_hex_format.la_format_specifier) |
| #define local_hex_format_suffix() \ |
| (current_language->la_hex_format.la_format_suffix) |
| |
| #define LA_PRINT_CHAR(ch, stream) \ |
| (current_language->la_printchar(ch, stream)) |
| #define LA_PRINT_STRING(stream, string, length, width, force_ellipses) \ |
| (current_language->la_printstr(stream, string, length, width, force_ellipses)) |
| #define LA_EMIT_CHAR(ch, stream, quoter) \ |
| (current_language->la_emitchar(ch, stream, quoter)) |
| |
| /* Test a character to decide whether it can be printed in literal form |
| or needs to be printed in another representation. For example, |
| in C the literal form of the character with octal value 141 is 'a' |
| and the "other representation" is '\141'. The "other representation" |
| is program language dependent. */ |
| |
| #define PRINT_LITERAL_FORM(c) \ |
| ((c) >= 0x20 \ |
| && ((c) < 0x7F || (c) >= 0xA0) \ |
| && (!sevenbit_strings || (c) < 0x80)) |
| |
| /* Return a format string for printf that will print a number in one of |
| the local (language-specific) formats. Result is static and is |
| overwritten by the next call. Takes printf options like "08" or "l" |
| (to produce e.g. %08x or %lx). */ |
| |
| extern char * |
| local_decimal_format_custom PARAMS ((char *)); /* language.c */ |
| |
| extern char * |
| local_octal_format_custom PARAMS ((char *)); /* language.c */ |
| |
| extern char * |
| local_hex_format_custom PARAMS ((char *)); /* language.c */ |
| |
| /* Return a string that contains a number formatted in one of the local |
| (language-specific) formats. Result is static and is overwritten by |
| the next call. Takes printf options like "08" or "l". */ |
| |
| extern char * |
| local_hex_string PARAMS ((unsigned long)); /* language.c */ |
| |
| extern char * |
| local_hex_string_custom PARAMS ((unsigned long, char *)); /* language.c */ |
| |
| /* Type predicates */ |
| |
| extern int |
| simple_type PARAMS ((struct type *)); |
| |
| extern int |
| ordered_type PARAMS ((struct type *)); |
| |
| extern int |
| same_type PARAMS ((struct type *, struct type *)); |
| |
| extern int |
| integral_type PARAMS ((struct type *)); |
| |
| extern int |
| numeric_type PARAMS ((struct type *)); |
| |
| extern int |
| character_type PARAMS ((struct type *)); |
| |
| extern int |
| boolean_type PARAMS ((struct type *)); |
| |
| extern int |
| float_type PARAMS ((struct type *)); |
| |
| extern int |
| pointer_type PARAMS ((struct type *)); |
| |
| extern int |
| structured_type PARAMS ((struct type *)); |
| |
| /* Checks Binary and Unary operations for semantic type correctness */ |
| /* FIXME: Does not appear to be used */ |
| #define unop_type_check(v,o) binop_type_check((v),NULL,(o)) |
| |
| extern void |
| binop_type_check PARAMS ((struct value *, struct value *, int)); |
| |
| /* Error messages */ |
| |
| extern void |
| op_error PARAMS ((char *fmt, enum exp_opcode, int)); |
| |
| #define type_op_error(f,o) \ |
| op_error((f),(o),type_check==type_check_on ? 1 : 0) |
| #define range_op_error(f,o) \ |
| op_error((f),(o),range_check==range_check_on ? 1 : 0) |
| |
| extern void |
| type_error PARAMS ((char *, ...)) |
| ATTR_FORMAT(printf, 1, 2); |
| |
| void |
| range_error PARAMS ((char *, ...)) |
| ATTR_FORMAT(printf, 1, 2); |
| |
| /* Data: Does this value represent "truth" to the current language? */ |
| |
| extern int |
| value_true PARAMS ((struct value *)); |
| |
| extern struct type * lang_bool_type PARAMS ((void)); |
| |
| /* The type used for Boolean values in the current language. */ |
| #define LA_BOOL_TYPE lang_bool_type () |
| |
| /* Misc: The string representing a particular enum language. */ |
| |
| extern enum language language_enum PARAMS ((char *str)); |
| |
| extern const struct language_defn *language_def PARAMS ((enum language)); |
| |
| extern char *language_str PARAMS ((enum language)); |
| |
| /* Add a language to the set known by GDB (at initialization time). */ |
| |
| extern void |
| add_language PARAMS ((const struct language_defn *)); |
| |
| extern enum language |
| get_frame_language PARAMS ((void)); /* In stack.c */ |
| |
| #endif /* defined (LANGUAGE_H) */ |