This commit is contained in:
Akim Demaille
2001-08-10 09:35:01 +00:00
parent 6f42a3e682
commit a940e84e29
6 changed files with 401 additions and 364 deletions

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@@ -28,6 +28,215 @@ License", "Conditions for Using Bison" and this permission notice may be
included in translations approved by the Free Software Foundation
instead of in the original English.

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.

File: bison.info, Node: Glossary, Next: Index, Prev: Table of Symbols, Up: Top