| .TH make_dparser 1 "Mar 2003" Unix "User Manuals" |
| .SH NAME |
| .PP |
| make_dparser \- D Parser Generator |
| .SH SYNOPSIS |
| .PP |
| .B make_dparser |
| [\fIoptions\fP] \fIgrammar\fP |
| .SH DESCRIPTION |
| .PP |
| make_dparser is a scannerless GLR parser generator based on the Tomita |
| algorithm. It is self-hosted and very easy to use. Grammars are written in a |
| natural style of EBNF and regular expressions and support both speculative and |
| final actions. |
| .SH OPTIONS |
| .PP |
| .IP "-l" |
| Toggle longest match lexical ambiguity resolution. |
| When ON the scanner only recognizing the longest matching tokens |
| in a given state. This provides an easy way to build |
| grammars for languages which use longest match lexical |
| ambiguity resolution (e.g. ANSI-C, C++). (OFF by default) |
| .IP "-T" |
| Toggle building of a tokenizer for START. When ON, instead of generating |
| a unique scanner for each state (i.e. a 'scannerless' parser), |
| generate a single scanner (tokenizer) for the entire grammar. This provides |
| an easy way to build grammars for languages which assume a |
| tokenizer (e.g. ANSI C). (OFF by default) |
| .IP "-H \fI-1/0/1\fP" |
| Write header, 0 : no, 1 : yes, -1 : only if not empty. |
| .IP "-t \fI0/1\fP" |
| Token type, 0 : #define, 1 : enum. |
| .IP "-C" |
| Toggle computing whitespace states. If 'whitespace' is |
| defined in the grammar, then use it as a subparser to |
| consume whitespace. (ON by default) |
| .IP "-A" |
| Toggle computing states for all non-terminals. Ensures that there is a unique |
| state for each non-terminal so that a subparsers can be invoked for |
| that non-terminal. (OFF by default) |
| .IP "-i \fItag\fP" |
| Tag for grammar data structures so that multiple sets of tables can |
| be included in one file/application. (defaults to 'gram') |
| .IP "-b \fIblocks\fP" |
| Number of blocks to which scanner tables are broken up into. |
| Larger numbers permit more sharing with more overhead. 4 seems to be optimal |
| for most grammars. (defaults to 4) |
| files. |
| .IP "-p" |
| Toggle setting of operator priority from rules. Setting of operator |
| priorities on operator tokens can increase the size of the tables but |
| can permit unnecessary parse stacks to be pruned earlier. (OFF by default) |
| .IP "-r" |
| Toggle use of right recursion for EBNF productions. Do not change this |
| unless you really know what you are doing. (OFF by default) |
| .IP "-L" |
| Toggle writing of line numbers. Used to debug the parsing table |
| generator itself. (ON by default) |
| .IP "-v" |
| Increase verbosity. |
| .IP "-d" |
| Increase debugging. |
| .IP "-h" |
| Display help. |
| .SH ENVIRONMENT |
| .PP |
| All the options are available through environment variables |
| with the names: |
| |
| .na |
| .nh |
| D_MAKE_PARSER_HEADER, |
| D_MAKE_PARSER_TOKEN, |
| D_MAKE_PARSER_GRAMMAR_IDENT, |
| D_MAKE_PARSER_SCANNER_BLOCKS, |
| D_MAKE_PARSER_SET_PRIORITY, |
| D_MAKE_PARSER_WRITE_LINE_DIRECTIVES, |
| D_MAKE_PARSER_VERBOSE, |
| D_MAKE_PARSER_DEBUG. |
| .ad |
| .hy |
| .SH FEATURES |
| .PP |
| The features are covered in the documentation. See the README file. |
| .SH FILES |
| .PP |
| None. |
| .SH NO WARRANTIES |
| 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 |
| COPYRIGHT for more details. |
| .SH SEE ALSO |
| .PP |
| .BR flex (1), |
| .BR yacc (1), |
| .BR bison (1) |
| .PP |
| D Parser Home Page: http://dparser.sourceforge.net/ |
| .PP |
| The BSD General Public License. |
| .SH AUTHOR |
| .PP |
| John Plevyak. Use <jplevyak at users.sourceforge.net> to contact. |
| |
