+\1f
+File: bison.info, Node: Table of Symbols, Next: Glossary, Prev: Invocation, Up: Top
+
+Bison Symbols
+*************
+
+`error'
+ A token name reserved for error recovery. This token may be used
+ in grammar rules so as to allow the Bison parser to recognize an
+ error in the grammar without halting the process. In effect, a
+ sentence containing an error may be recognized as valid. On a
+ parse error, the token `error' becomes the current look-ahead
+ token. Actions corresponding to `error' are then executed, and
+ the look-ahead token is reset to the token that originally caused
+ the violation. *Note Error Recovery::.
+
+`YYABORT'
+ Macro to pretend that an unrecoverable syntax error has occurred,
+ by making `yyparse' return 1 immediately. The error reporting
+ function `yyerror' is not called. *Note The Parser Function
+ `yyparse': Parser Function.
+
+`YYACCEPT'
+ Macro to pretend that a complete utterance of the language has been
+ read, by making `yyparse' return 0 immediately. *Note The Parser
+ Function `yyparse': Parser Function.
+
+`YYBACKUP'
+ Macro to discard a value from the parser stack and fake a
+ look-ahead token. *Note Special Features for Use in Actions:
+ Action Features.
+
+`YYERROR'
+ Macro to pretend that a syntax error has just been detected: call
+ `yyerror' and then perform normal error recovery if possible
+ (*note Error Recovery::), or (if recovery is impossible) make
+ `yyparse' return 1. *Note Error Recovery::.
+
+`YYERROR_VERBOSE'
+ Macro that you define with `#define' in the Bison declarations
+ section to request verbose, specific error message strings when
+ `yyerror' is called.
+
+`YYINITDEPTH'
+ Macro for specifying the initial size of the parser stack. *Note
+ Stack Overflow::.
+
+`YYLEX_PARAM'
+ Macro for specifying an extra argument (or list of extra
+ arguments) for `yyparse' to pass to `yylex'. *Note Calling
+ Conventions for Pure Parsers: Pure Calling.
+
+`YYLTYPE'
+ Macro for the data type of `yylloc'; a structure with four
+ members. *Note Data Types of Locations: Location Type.
+
+`yyltype'
+ Default value for YYLTYPE.
+
+`YYMAXDEPTH'
+ Macro for specifying the maximum size of the parser stack. *Note
+ Stack Overflow::.
+
+`YYPARSE_PARAM'
+ Macro for specifying the name of a parameter that `yyparse' should
+ accept. *Note Calling Conventions for Pure Parsers: Pure Calling.
+
+`YYRECOVERING'
+ Macro whose value indicates whether the parser is recovering from a
+ syntax error. *Note Special Features for Use in Actions: Action
+ Features.
+
+`YYSTYPE'
+ Macro for the data type of semantic values; `int' by default.
+ *Note Data Types of Semantic Values: Value Type.
+
+`yychar'
+ External integer variable that contains the integer value of the
+ current look-ahead token. (In a pure parser, it is a local
+ variable within `yyparse'.) Error-recovery rule actions may
+ examine this variable. *Note Special Features for Use in Actions:
+ Action Features.
+
+`yyclearin'
+ Macro used in error-recovery rule actions. It clears the previous
+ look-ahead token. *Note Error Recovery::.
+
+`yydebug'
+ External integer variable set to zero by default. If `yydebug' is
+ given a nonzero value, the parser will output information on input
+ symbols and parser action. *Note Debugging Your Parser: Debugging.
+
+`yyerrok'
+ Macro to cause parser to recover immediately to its normal mode
+ after a parse error. *Note Error Recovery::.
+
+`yyerror'
+ User-supplied function to be called by `yyparse' on error. The
+ function receives one argument, a pointer to a character string
+ containing an error message. *Note The Error Reporting Function
+ `yyerror': Error Reporting.
+
+`yylex'
+ User-supplied lexical analyzer function, called with no arguments
+ to get the next token. *Note The Lexical Analyzer Function
+ `yylex': Lexical.
+
+`yylval'
+ External variable in which `yylex' should place the semantic value
+ associated with a token. (In a pure parser, it is a local
+ variable within `yyparse', and its address is passed to `yylex'.)
+ *Note Semantic Values of Tokens: Token Values.
+
+`yylloc'
+ External variable in which `yylex' should place the line and column
+ numbers associated with a token. (In a pure parser, it is a local
+ variable within `yyparse', and its address is passed to `yylex'.)
+ You can ignore this variable if you don't use the `@' feature in
+ the grammar actions. *Note Textual Positions of Tokens: Token
+ Positions.
+
+`yynerrs'
+ Global variable which Bison increments each time there is a parse
+ error. (In a pure parser, it is a local variable within
+ `yyparse'.) *Note The Error Reporting Function `yyerror': Error
+ Reporting.
+
+`yyparse'
+ The parser function produced by Bison; call this function to start
+ parsing. *Note The Parser Function `yyparse': Parser Function.
+
+`%debug'
+ Equip the parser for debugging. *Note Decl Summary::.
+
+`%defines'
+ Bison declaration to create a header file meant for the scanner.
+ *Note Decl Summary::.
+
+`%left'
+ Bison declaration to assign left associativity to token(s). *Note
+ Operator Precedence: Precedence Decl.
+
+`%no_lines'
+ Bison declaration to avoid generating `#line' directives in the
+ parser file. *Note Decl Summary::.
+
+`%nonassoc'
+ Bison declaration to assign non-associativity to token(s). *Note
+ Operator Precedence: Precedence Decl.
+
+`%prec'
+ Bison declaration to assign a precedence to a specific rule.
+ *Note Context-Dependent Precedence: Contextual Precedence.
+
+`%pure_parser'
+ Bison declaration to request a pure (reentrant) parser. *Note A
+ Pure (Reentrant) Parser: Pure Decl.
+
+`%right'
+ Bison declaration to assign right associativity to token(s).
+ *Note Operator Precedence: Precedence Decl.
+
+`%start'
+ Bison declaration to specify the start symbol. *Note The
+ Start-Symbol: Start Decl.
+
+`%token'
+ Bison declaration to declare token(s) without specifying
+ precedence. *Note Token Type Names: Token Decl.
+
+`%token_table'
+ Bison declaration to include a token name table in the parser file.
+ *Note Decl Summary::.
+
+`%type'
+ Bison declaration to declare nonterminals. *Note Nonterminal
+ Symbols: Type Decl.
+
+`%union'
+ Bison declaration to specify several possible data types for
+ semantic values. *Note The Collection of Value Types: Union Decl.
+
+ These are the punctuation and delimiters used in Bison input:
+
+`%%'
+ Delimiter used to separate the grammar rule section from the Bison
+ declarations section or the additional C code section. *Note The
+ Overall Layout of a Bison Grammar: Grammar Layout.
+
+`%{ %}'
+ All code listed between `%{' and `%}' is copied directly to the
+ output file uninterpreted. Such code forms the "C declarations"
+ section of the input file. *Note Outline of a Bison Grammar:
+ Grammar Outline.
+
+`/*...*/'
+ Comment delimiters, as in C.
+
+`:'
+ Separates a rule's result from its components. *Note Syntax of
+ Grammar Rules: Rules.
+
+`;'
+ Terminates a rule. *Note Syntax of Grammar Rules: Rules.
+
+`|'
+ Separates alternate rules for the same result nonterminal. *Note
+ Syntax of Grammar Rules: Rules.
+
projects / bison.git / blobdiff