gudusoft.gsqlparser

Class TCustomParser.ProofReduction

Object

gudusoft.gsqlparser.TCustomParser.ProofReduction

Enclosing class:

TCustomParser

public static final class TCustomParser.ProofReduction
extends Object

One reduction the automaton performed, recorded before the stack is popped.

Field Summary

Fields

Modifier and Type	Field and Description
int	length Number of stack entries the rule pops.
int	lhsSymbol LHS symbol the rule reduces to, as stored in the generated tables.
long	lookaheadOffset Character offset of the lookahead token in hand when the reduction ran, or -1 when the reduction needed no lookahead (a default reduction).
int	rule yacc rule number (positive).
int	stackDepthBeforePop Stack depth BEFORE the pop — the rule spans depths [depth-length+1, depth].

Method Summary

Modifier and Type	Method and Description
String	toString()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

rule

public final int rule

yacc rule number (positive).

length

public final int length

Number of stack entries the rule pops.

lhsSymbol

public final int lhsSymbol

LHS symbol the rule reduces to, as stored in the generated tables.

stackDepthBeforePop

public final int stackDepthBeforePop

Stack depth BEFORE the pop — the rule spans depths [depth-length+1, depth].

lookaheadOffset

public final long lookaheadOffset

Character offset of the lookahead token in hand when the reduction ran, or -1 when the reduction needed no lookahead (a default reduction). Only reductions taken with a STABLE lookahead — one that lies before the first hole — may be used as positive evidence.

Method Detail

toString

public String toString()

Overrides:

toString in class Object