Class: PHP_ParserGenerator_Parser

Source Location: /ParserGenerator/Parser.php

Class PHP_ParserGenerator_Parser

Class Overview

The grammar parser for lemon grammar files.

Located in /ParserGenerator/Parser.php [line 33]

Author(s):

Gregory Beaver <cellog@php.net>

Information Tags:

Since:	Class available since Release 0.1.0
License:	PHP License 3.01
Copyright:	2006 Gregory Beaver

Properties

Methods

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Constant Summary

INITIALIZE
IN_RHS
LHS_ALIAS_1
LHS_ALIAS_2
LHS_ALIAS_3
PRECEDENCE_MARK_1
PRECEDENCE_MARK_2
RESYNC_AFTER_DECL_ERROR
RESYNC_AFTER_RULE_ERROR
RHS_ALIAS_1
RHS_ALIAS_2
WAITING_FOR_ARROW
WAITING_FOR_DATATYPE_SYMBOL
WAITING_FOR_DECL_ARG
WAITING_FOR_DECL_KEYWORD
WAITING_FOR_DECL_OR_RULE
WAITING_FOR_DESTRUCTOR_SYMBOL
WAITING_FOR_FALLBACK_ID
WAITING_FOR_PRECEDENCE_SYMBOL

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Property Summary

array	$alias	Aliases for each RHS symbol name (or NULL)
mixed	$declargslot	Where the declaration argument should be put
mixed	$declassoc
string	$declkeyword	Keyword of a declaration
mixed	$decllnslot	Where the declaration linenumber is put
int	$errorcnt	Number of parsing errors so far
PHP_ParserGenerator_Symbol	$fallback	The fallback token
string	$filename	Name of the input file
PHP_ParserGenerator_Rule	$firstrule
PHP_ParserGenerator_Data	$gp	Global state vector
PHP_ParserGenerator_Rule	$lastrule
PHP_ParserGenerator_Symbol	$lhs	Left-hand side of the current rule
string	$lhsalias	Alias for the LHS
int	$nrhs	Number of right-hand side symbols seen
mixed	$preccounter
PHP_ParserGenerator_Rule	$prevrule	Previous rule parsed
array	$rhs	Right-hand side symbols
int	$state	Parser state (one of the class constants for this class)
int	$tokenlineno	Linenumber at which current token starts
int	$tokenstart	Index of current token within the input string

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Method Summary

PHP_ParserGenerator_Parser	__construct()
void	Parse()	In spite of its name, this function is really a scanner.
void	parseonetoken()	Parse a single token

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Properties

array $alias = array() [line 135]

Aliases for each RHS symbol name (or NULL)

API Tags:

Access:

public

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mixed $declargslot = array() [line 154]

Where the declaration argument should be put

This is assigned as a reference to an internal variable

API Tags:

Access:

public

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mixed $declassoc [line 163]

API Tags:

Access:

public

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string $declkeyword [line 147]

Keyword of a declaration

This is one of the %keyword keywords in the grammar file

API Tags:

Access:

public

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mixed $decllnslot [line 161]

Where the declaration linenumber is put

This is assigned as a reference to an internal variable

API Tags:

Access:

public

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int $errorcnt [line 70]

Number of parsing errors so far

API Tags:

Access:

public

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PHP_ParserGenerator_Symbol $fallback [line 110]

The fallback token

API Tags:

Access:

public

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string $filename [line 60]

Name of the input file

API Tags:

Access:

public

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PHP_ParserGenerator_Rule $firstrule [line 168]

API Tags:

Access:

public

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PHP_ParserGenerator_Data $gp [line 80]

Global state vector

API Tags:

Access:

public

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PHP_ParserGenerator_Rule $lastrule [line 172]

API Tags:

Access:

public

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PHP_ParserGenerator_Symbol $lhs [line 115]

Left-hand side of the current rule

API Tags:

Access:

public

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string $lhsalias [line 120]

Alias for the LHS

API Tags:

Access:

public

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int $nrhs [line 125]

Number of right-hand side symbols seen

API Tags:

Access:

public

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mixed $preccounter [line 164]

API Tags:

Access:

public

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PHP_ParserGenerator_Rule $prevrule [line 140]

Previous rule parsed

API Tags:

Access:

public

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array $rhs = array() [line 130]

Right-hand side symbols

API Tags:

Access:

public

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int $state [line 105]

Parser state (one of the class constants for this class)

PHP_ParserGenerator_Parser::INITIALIZE,
PHP_ParserGenerator_Parser::WAITING_FOR_DECL_OR_RULE,
PHP_ParserGenerator_Parser::WAITING_FOR_DECL_KEYWORD,
PHP_ParserGenerator_Parser::WAITING_FOR_DECL_ARG,
PHP_ParserGenerator_Parser::WAITING_FOR_PRECEDENCE_SYMBOL,
PHP_ParserGenerator_Parser::WAITING_FOR_ARROW,
PHP_ParserGenerator_Parser::IN_RHS,
PHP_ParserGenerator_Parser::LHS_ALIAS_1,
PHP_ParserGenerator_Parser::LHS_ALIAS_2,
PHP_ParserGenerator_Parser::LHS_ALIAS_3,
PHP_ParserGenerator_Parser::RHS_ALIAS_1,
PHP_ParserGenerator_Parser::RHS_ALIAS_2,
PHP_ParserGenerator_Parser::PRECEDENCE_MARK_1,
PHP_ParserGenerator_Parser::PRECEDENCE_MARK_2,
PHP_ParserGenerator_Parser::RESYNC_AFTER_RULE_ERROR,
PHP_ParserGenerator_Parser::RESYNC_AFTER_DECL_ERROR,
PHP_ParserGenerator_Parser::WAITING_FOR_DESTRUCTOR_SYMBOL,
PHP_ParserGenerator_Parser::WAITING_FOR_DATATYPE_SYMBOL,
PHP_ParserGenerator_Parser::WAITING_FOR_FALLBACK_ID

API Tags:

Access:

public

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int $tokenlineno [line 65]

Linenumber at which current token starts

API Tags:

Access:

public

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int $tokenstart [line 75]

Index of current token within the input string

API Tags:

Access:

public

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Methods

Constructor __construct [line 179]

PHP_ParserGenerator_Parser __construct(
PHP_ParserGenerator
$lem 
)

Parameters:

PHP_ParserGenerator

$lem:

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Parse [line 255]

void Parse(
PHP_ParserGenerator_Data
$gp 
)

In spite of its name, this function is really a scanner.

It reads in the entire input file (all at once) then tokenizes it. Each token is passed to the function "parseonetoken" which builds all the appropriate data structures in the global state vector "gp".

Parameters:

PHP_ParserGenerator_Data

$gp:

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parseonetoken [line 412]

void parseonetoken(
string
$token 
)

Parse a single token

Parameters:

string

$token:

token

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Constants

INITIALIZE = 1 [line 35]

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IN_RHS = 7 [line 41]

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LHS_ALIAS_1 = 8 [line 42]

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LHS_ALIAS_2 = 9 [line 43]

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LHS_ALIAS_3 = 10 [line 44]

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PRECEDENCE_MARK_1 = 13 [line 47]

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PRECEDENCE_MARK_2 = 14 [line 48]

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RESYNC_AFTER_DECL_ERROR = 16 [line 50]

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RESYNC_AFTER_RULE_ERROR = 15 [line 49]

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RHS_ALIAS_1 = 11 [line 45]

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RHS_ALIAS_2 = 12 [line 46]

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WAITING_FOR_ARROW = 6 [line 40]

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WAITING_FOR_DATATYPE_SYMBOL = 18 [line 52]

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WAITING_FOR_DECL_ARG = 4 [line 38]

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WAITING_FOR_DECL_KEYWORD = 3 [line 37]

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WAITING_FOR_DECL_OR_RULE = 2 [line 36]

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WAITING_FOR_DESTRUCTOR_SYMBOL = 17 [line 51]

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WAITING_FOR_FALLBACK_ID = 19 [line 53]

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WAITING_FOR_PRECEDENCE_SYMBOL = 5 [line 39]

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Documentation generated on Sun, 02 Jul 2006 09:11:02 -0400 by phpDocumentor 1.3.0

	PHP_ParserGenerator

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