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EDITING: cdesc-Racc.ri

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@fileI"ext/racc/cparse/cparse.c;T:0@omit_headings_from_table_of_contents_below0o;;[�;	I"lib/racc/debugflags.rb;T;
0o;;[�;	I"lib/racc/exception.rb;T;
0o;;[�;	I"lib/racc/grammar.rb;T;
0o;;[�;	I""lib/racc/grammarfileparser.rb;T;
0o;;[�;	I"lib/racc/info.rb;T;
0o;;[�;	I"lib/racc/iset.rb;T;
0o;;[�;	I"!lib/racc/logfilegenerator.rb;T;
0o;;[�;	I"lib/racc/parser-text.rb;T;
0o;;[�;	I"lib/racc/parser.rb;T;
0o;;[Io:RDoc::Markup::Paragraph;[I")Racc is a LALR(1) parser generator. ;TI"?It is written in Ruby itself, and generates Ruby programs.;To:RDoc::Markup::BlankLine�S:RDoc::Markup::Heading:
leveli:	textI"Command-line Reference;T@.o:RDoc::Markup::Verbatim;[I"Fracc [-o<var>filename</var>] [--output-file=<var>filename</var>]
;TI"E     [-e<var>rubypath</var>] [--executable=<var>rubypath</var>]
;TI"     [-v] [--verbose]
;TI"C     [-O<var>filename</var>] [--log-file=<var>filename</var>]
;TI"     [-g] [--debug]
;TI"     [-E] [--embedded]
;TI"#     [-l] [--no-line-convert]
;TI"$     [-c] [--line-convert-all]
;TI"#     [-a] [--no-omit-actions]
;TI"     [-C] [--check-only]
;TI"!     [-S] [--output-status]
;TI"D     [--version] [--copyright] [--help] <var>grammarfile</var>
;T:@format0o:RDoc::Markup::List:
@type:
LABEL:@items[o:RDoc::Markup::ListItem:@label[I"+grammarfile+;T;[o;;[I"3Racc grammar file. Any extension is permitted.;To;;[I")-o+outfile+, --output-file=+outfile+;T;[o;;[I":A filename for output. default is <+filename+>.tab.rb;To;;[I"(-O+filename+, --log-file=+filename+;T;[o;;[I".Place logging output in file +filename+. ;TI"2Default log file name is <+filename+>.output.;To;;[I"*-e+rubypath+, --executable=+rubypath+;T;[o;;[I"Loutput executable file(mode 755). where +path+ is the Ruby interpreter.;To;;[I"-v, --verbose;T;[o;;[I"Lverbose mode. create +filename+.output file, like yacc's y.output file.;To;;[I"-g, --debug;T;[o;;[I"Fadd debug code to parser class. To display debuggin information, ;TI"@use this '-g' option and set @yydebug true in parser class.;To;;[I"-E, --embedded;T;[o;;[I"EOutput parser which doesn't need runtime files (racc/parser.rb).;To;;[I"-C, --check-only;T;[o;;[I"0Check syntax of racc grammar file and quit.;To;;[I"-S, --output-status;T;[o;;[I"1Print messages time to time while compiling.;To;;[I"-l, --no-line-convert;T;[o;;[I"&turns off line number converting.;To;;[I"-c, --line-convert-all;T;[o;;[I">Convert line number of actions, inner, header and footer.;To;;[I"-a, --no-omit-actions;T;[o;;[I"2Call all actions, even if an action is empty.;To;;[I"--version;T;[o;;[I"!print Racc version and quit.;To;;[I"--copyright;T;[o;;[I"Print copyright and quit.;To;;[I"--help;T;[o;;[I"Print usage and quit.;T@.S;
;i;I"!Generating Parser Using Racc;T@.o;;[I"/To compile Racc grammar file, simply type:;T@.o;;[I"$ racc parse.y
;T;0o;;[I"_This creates Ruby script file "parse.tab.y". The -o option can change the output filename.;T@.S;
;i;I" Writing A Racc Grammar File;T@.o;;[
I"DIf you want your own parser, you have to write a grammar file. ;TI"TA grammar file contains the name of your parser class, grammar for the parser, ;TI"#user code, and anything else. ;TI"?When writing a grammar file, yacc's knowledge is helpful. ;TI"AIf you have not used yacc before, Racc is not too difficult.;T@.o;;[I")Here's an example Racc grammar file.;T@.o;;[I"class Calcparser
;TI"
rule
;TI"$  target: exp { print val[0] }
;TI"
;TI"  exp: exp '+' exp
;TI"     | exp '*' exp
;TI"     | '(' exp ')'
;TI"     | NUMBER
;TI"	end
;T;0o;;[	I"-Racc grammar files resemble yacc files. ;TI")But (of course), this is Ruby code. ;TI"-yacc's $$ is the 'result', $0, $1... is ;TI"Ian array called 'val', and $-1, $-2... is an array called '_values'.;T@.o;;[I"RSee the {Grammar File Reference}[rdoc-ref:lib/racc/rdoc/grammar.en.rdoc] for ;TI"'more information on grammar files.;T@.S;
;i;I"Parser;T@.o;;[I"JThen you must prepare the parse entry method. There are two types of ;TI"Jparse methods in Racc, Racc::Parser#do_parse and Racc::Parser#yyparse;T@.o;;[I"%Racc::Parser#do_parse is simple.;T@.o;;[
I"EIt's yyparse() of yacc, and Racc::Parser#next_token is yylex(). ;TI"FThis method must returns an array like [TOKENSYMBOL, ITS_VALUE]. ;TI"EOF is [false, false]. ;TI"J(TOKENSYMBOL is a Ruby symbol (taken from String#intern) by default. ;TI";If you want to change this, see the grammar reference.;T@.o;;[I"=Racc::Parser#yyparse is little complicated, but useful. ;TI"WIt does not use Racc::Parser#next_token, instead it gets tokens from any iterator.;T@.o;;[I":For example, <code>yyparse(obj, :scan)</code> causes ;TI"Tcalling +obj#scan+, and you can return tokens by yielding them from +obj#scan+.;T@.S;
;i;I"Debugging;T@.o;;[I"<When debugging, "-v" or/and the "-g" option is helpful.;T@.o;;[I"."-v" creates verbose log file (.output). ;TI"&"-g" creates a "Verbose Parser". ;TI"=Verbose Parser prints the internal status when parsing. ;TI"But it's _not_ automatic. ;TI"QYou must use -g option and set +@yydebug+ to +true+ in order to get output. ;TI"/-g option only creates the verbose parser.;T@.S;
;i;I" Racc reported syntax error.;T@.o;;[I"!Isn't there too many "end"? ;TI".grammar of racc file is changed in v0.10.;T@.o;;[I"KRacc does not use '%' mark, while yacc uses huge number of '%' marks..;T@.S;
;i;I"$Racc reported "XXXX conflicts".;T@.o;;[I"Try "racc -v xxxx.y". ;TI"?It causes producing racc's internal log file, xxxx.output.;T@.S;
;i;I".Generated parsers does not work correctly;T@.o;;[	I"Try "racc -g xxxx.y". ;TI"8This command let racc generate "debugging parser". ;TI",Then set @yydebug=true in your parser. ;TI".It produces a working log of your parser.;T@.S;
;i;I"!Re-distributing Racc runtime;T@.o;;[I"KA parser, which is created by Racc, requires the Racc runtime module; ;TI"racc/parser.rb.;T@.o;;[I"0Ruby 1.8.x comes with Racc runtime module, ;TI"0you need NOT distribute Racc runtime files.;T@.o;;[I"FIf you want to include the Racc runtime module with your parser. ;TI"+This can be done by using '-E' option:;T@.o;;[I"($ racc -E -omyparser.rb myparser.y
;T;0o;;[I"EThis command creates myparser.rb which `includes' Racc runtime. ;TI"FOnly you must do is to distribute your parser file (myparser.rb).;T@.o;;[I">Note: parser.rb is ruby license, but your parser is not. ;TI")Your own parser is completely yours.;T;	@';
0o;;[�;	I"$lib/racc/parserfilegenerator.rb;T;
0o;;[�;	I"lib/racc/sourcetext.rb;T;
0o;;[�;	I"lib/racc/state.rb;T;
0o;;[�;	I"%lib/racc/statetransitiontable.rb;T;
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CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📁 Accept/	DIR	—	2026-01-17 03:50
📁 ActionTable/	DIR	—	2026-01-17 03:50
📁 CompileError/	DIR	—	2026-01-17 03:50
📁 CparseParams/	DIR	—	2026-01-17 03:50
📁 DebugFlags/	DIR	—	2026-01-17 03:50
📁 Error/	DIR	—	2026-01-17 03:50
📁 Goto/	DIR	—	2026-01-17 03:50
📁 Grammar/	DIR	—	2026-01-17 03:50
📁 GrammarFileParser/	DIR	—	2026-01-17 03:50
📁 GrammarFileScanner/	DIR	—	2026-01-17 03:50
📁 ISet/	DIR	—	2026-01-17 03:50
📁 Item/	DIR	—	2026-01-17 03:50
📁 LocationPointer/	DIR	—	2026-01-17 03:50
📁 LogFileGenerator/	DIR	—	2026-01-17 03:50
📁 OrMark/	DIR	—	2026-01-17 03:50
📁 ParseError/	DIR	—	2026-01-17 03:50
📁 Parser/	DIR	—	2026-01-17 03:50
📁 ParserClassGenerator/	DIR	—	2026-01-17 03:50
📁 ParserFileGenerator/	DIR	—	2026-01-17 03:50
📁 Prec/	DIR	—	2026-01-17 03:50
📁 Reduce/	DIR	—	2026-01-17 03:50
📁 RRconflict/	DIR	—	2026-01-17 03:50
📁 Rule/	DIR	—	2026-01-17 03:50
📁 Shift/	DIR	—	2026-01-17 03:50
📁 SourceText/	DIR	—	2026-01-17 03:50
📁 SRconflict/	DIR	—	2026-01-17 03:50
📁 State/	DIR	—	2026-01-17 03:50
📁 States/	DIR	—	2026-01-17 03:50
📁 StateTransitionTable/	DIR	—	2026-01-17 03:50
📁 StateTransitionTableGenerator/	DIR	—	2026-01-17 03:50
📁 Sym/	DIR	—	2026-01-17 03:50
📁 SymbolTable/	DIR	—	2026-01-17 03:50
📁 UserAction/	DIR	—	2026-01-17 03:50
📄 cdesc-Racc.ri	RI	7.7 KB	2025-10-01 20:48	EDIT