org.cheffo.jeplite.optimizer
Class ExpressionOptimizer

java.lang.Object
  |
  +--org.cheffo.jeplite.optimizer.ExpressionOptimizer

All Implemented Interfaces:

ParserVisitor

public class ExpressionOptimizer

extends java.lang.Object

implements ParserVisitor

Constructor Summary

ExpressionOptimizer(SimpleNode node)

Method Summary

void	addConst(java.lang.String constName) Marks a variable name to be a constant name.
void	clearConstants()
SimpleNode	optimize()
void	removeConst(java.lang.String constName) Unmarks a variable name to be a constant name.
java.lang.Object	visit(ASTConstant node, java.lang.Object data)
java.lang.Object	visit(ASTFunNode node, java.lang.Object data)
java.lang.Object	visit(ASTVarNode node, java.lang.Object data) If a var node is defined in the const table, make it to be a real constant.
java.lang.Object	visit(SimpleNode node, java.lang.Object data)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionOptimizer

public ExpressionOptimizer(SimpleNode node)

Method Detail

addConst

public void addConst(java.lang.String constName)

Marks a variable name to be a constant name.

removeConst

public void removeConst(java.lang.String constName)

Unmarks a variable name to be a constant name.

clearConstants

public void clearConstants()

optimize

public SimpleNode optimize()

visit

public java.lang.Object visit(ASTFunNode node,
                              java.lang.Object data)

Specified by:

visit in interface ParserVisitor

visit

public java.lang.Object visit(ASTVarNode node,
                              java.lang.Object data)

If a var node is defined in the const table, make it to be a real constant.

Specified by:

visit in interface ParserVisitor

visit

public java.lang.Object visit(ASTConstant node,
                              java.lang.Object data)

Specified by:

visit in interface ParserVisitor

visit

public java.lang.Object visit(SimpleNode node,
                              java.lang.Object data)

Specified by:

visit in interface ParserVisitor