hlt.language.syntax

Class ParserRule

java.lang.Object

hlt.language.util.Indexed

hlt.language.util.ArrayIndexed

hlt.language.syntax.ParserRule

public class ParserRule
extends ArrayIndexed

This is the class of production rules used by the parser at parse time. In contrast with a Grammar's Rule (the class of production rules used at parser construction time), this doesn't need to store the whole sequence of symbols in the rule's body. At parse time, all that is needed is:

1. the head symbol (what type of ParseNode to push on the parse stack);
2. the number of symbols in the rule (how far to pop the parse stack).

Other than that, the actual rule's body is never used by GenericParser or its subclasses, nor by the code of semanticAction generated by ParserGenerator.

Version:

Last modified on Fri Apr 13 20:10:39 2012 by hak

Author:

Hassan Aït-Kaci

See Also:

Rule, ParseNode, GenericParser, ParserGenerator

Copyright:

© by the author

Field Summary

Fields

Modifier and Type	Field and Description
ParserNonTerminal	head The head symbol (the rule's LHS).
int	length The number of symbols in the rule's RHS.

Fields inherited from class hlt.language.util.ArrayIndexed

set

Constructor Summary

Constructors

Constructor and Description
ParserRule(int head, int length, int index, int tagPosition)
ParserRule(int head, int length, int index, int precedence, int associativity)

Method Summary

Methods

Modifier and Type	Method and Description
ParserRule	addXmlInfo(int[] children)
ParserRule	addXmlInfo(int[][] xmlPaths)
ParserRule	addXmlInfo(java.lang.String[] attributeRefs)
ParserRule	addXmlInfo(XmlAttributeInfo[] attributes)
ParserRule	addXmlInfo(XmlTextInfo[][] infos)
ParserRule	addXmlInfo(XmlWrapper[][] wrapperPaths)
ParserRule	setXmlInfo(XmlInfo info)
java.lang.String	toString()

Methods inherited from class hlt.language.util.ArrayIndexed

equals

Methods inherited from class hlt.language.util.Indexed

hashCode, index

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

head

public ParserNonTerminal head

The head symbol (the rule's LHS).

length

public int length

The number of symbols in the rule's RHS.

Constructor Detail

ParserRule

public ParserRule(int head,
          int length,
          int index,
          int tagPosition)

ParserRule

public ParserRule(int head,
          int length,
          int index,
          int precedence,
          int associativity)

Method Detail

setXmlInfo

public ParserRule setXmlInfo(XmlInfo info)

addXmlInfo

public ParserRule addXmlInfo(int[] children)

addXmlInfo

public ParserRule addXmlInfo(int[][] xmlPaths)

addXmlInfo

public ParserRule addXmlInfo(XmlWrapper[][] wrapperPaths)

addXmlInfo

public ParserRule addXmlInfo(java.lang.String[] attributeRefs)

addXmlInfo

public ParserRule addXmlInfo(XmlAttributeInfo[] attributes)

addXmlInfo

public ParserRule addXmlInfo(XmlTextInfo[][] infos)

toString

public java.lang.String toString()

Overrides:

toString in class Indexed