Class: PHP_ParserGenerator_ActionTable

Source Location: /PHP_ParserGenerator-0.1.7/ParserGenerator/ActionTable.php

Class Overview

The state of the yy_action table under construction is an instance of the following structure

Author(s):

Gregory Beaver <cellog at php.net>

Version:

Release: @package_version@

Copyright:

2006 Gregory Beaver

Inherited Variables

Inherited Methods

Class Details

[line 62]
The state of the yy_action table under construction is an instance of the following structure

Author: Gregory Beaver <cellog@php.net>
Version: Release: @package_version@
Copyright: 2006 Gregory Beaver
Link: http://pear.php.net/package/PHP_ParserGenerator
Since: Class available since Release 0.1.0
License: New BSD License

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Class Variables

$aAction = array(
        array(
            'lookahead' => -1,
            'action' => -1
        ))

[line 82]

The $yy_action table under construction.

Each entry is of format:

  array(

      'lookahead' => -1, // Value of the lookahead token (symbol index)
      'action' => -1     // Action to take on the given lookahead (action index)
  );

See: PHP_ParserGenerator_Data::compute_action()
Access: public

Type:

array

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$aLookahead = array(
        array(
            'lookahead' => 0,
            'action' => 0
        ))

[line 94]

A single new transaction set.

See: $aAction format of the internal array is described here
Access: public

Type:

array

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$mnAction = 0

[line 113]

The action associated with the smallest lookahead token.

See: PHP_ParserGenerator_ActionTable::$mnLookahead
Access: public

Type:

int

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$mnLookahead = 0

[line 107]

The smallest (minimum) value of any lookahead token in $aLookahead

The lowest non-terminal is always introduced earlier in the parser file, and is therefore a more significant token.

Access: public

Type:

int

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$mxLookahead = 0

[line 118]

The largest (maximum) value of any lookahead token in $aLookahead

Access: public

Type:

int

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$nAction = 0

[line 68]

Number of used slots in $aAction

Access: public

Type:

int

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$nLookahead = 0

[line 127]

The number of slots used in $aLookahead.

This is the same as count($aLookahead), but there was no pressing reason to change this when porting from C.

See: PHP_ParserGenerator_ActionTable::$mnLookahead
Access: public

Type:

int

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Method Detail

acttab_action [line 137]

void acttab_action(
int
$lookahead, int
$action)

Add a new action to the current transaction set

Parameters:

int	`$lookahead`	—
int	`$action`	—

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acttab_insert [line 171]

int acttab_insert(
)

Add the transaction set built up with prior calls to acttab_action() into the current action table. Then reset the transaction set back to an empty set in preparation for a new round of acttab_action() calls.

Return the offset into the action table of the new transaction.

Return: Return the offset that should be added to the lookahead in order to get the index into $yy_action of the action. This will be used in generation of $yy_ofst tables (reduce and shift)
Throws: Exception

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Class: PHP_ParserGenerator_ActionTable

Class Overview

Author(s):

Version:

Copyright:

Variables

Methods

Inherited Variables

Inherited Methods

Class Details

Class Variables

$aAction = array( array( 'lookahead' => -1, 'action' => -1 ))

$aLookahead = array( array( 'lookahead' => 0, 'action' => 0 ))

$mnAction = 0

$mnLookahead = 0

$mxLookahead = 0

$nAction = 0

$nLookahead = 0

Method Detail

acttab_action [line 137]

Parameters:

acttab_insert [line 171]

$aAction = array(
array(
'lookahead' => -1,
'action' => -1
))

$aLookahead = array(
array(
'lookahead' => 0,
'action' => 0
))