| make_dparser(1) User Manuals make_dparser(1) |
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| NAME |
| make_dparser - D Parser Generator |
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| SYNOPSIS |
| make_dparser [options] grammar |
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| DESCRIPTION |
| 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. |
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| OPTIONS |
| -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) |
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| -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 lan- |
| guages which assume a tokenizer (e.g. ANSI C). (OFF by default) |
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| -H -1/0/1 |
| Write header, 0 : no, 1 : yes, -1 : only if not empty. |
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| -t 0/1 Token type, 0 : #define, 1 : enum. |
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| -C Toggle computing whitespace states. If 'whitespace' is defined |
| in the grammar, then use it as a subparser to consume whites- |
| pace. (ON by default) |
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| -A Toggle computing states for all non-terminals. Ensures that |
| there is a unique state for each non-terminal so that a sub- |
| parsers can be invoked for that non-terminal. (OFF by default) |
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| -i tag Tag for grammar data structures so that multiple sets of tables |
| can be included in one file/application. (defaults to 'gram') |
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| -b blocks |
| 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. |
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| -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) |
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| -r Toggle use of right recursion for EBNF productions. Do not |
| change this unless you really know what you are doing. (OFF by |
| default) |
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| -L Toggle writing of line numbers. Used to debug the parsing table |
| generator itself. (ON by default) |
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| -v Increase verbosity. |
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| -d Increase debugging. |
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| -h Display help. |
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| ENVIRONMENT |
| All the options are available through environment variables with the |
| names: |
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| 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. |
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| FEATURES |
| The features are covered in the documentation. See the README file. |
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| FILES |
| None. |
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| NO WARRANTIES |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of MER- |
| CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the COPYRIGHT |
| for more details. |
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| SEE ALSO |
| flex(1), yacc(1), bison(1) |
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| D Parser Home Page: http://dparser.sourceforge.net/ |
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| The BSD General Public License. |
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| AUTHOR |
| John Plevyak. Use <jplevyak at users.sourceforge.net> to contact. |
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| Unix Mar 2003 make_dparser(1) |
