picasso.parser
Class SemanticAnalyzer

java.lang.Object
  picasso.parser.SemanticAnalyzer

All Implemented Interfaces:

SemanticAnalyzerInterface

public class SemanticAnalyzer
extends java.lang.Object
implements SemanticAnalyzerInterface

SemanticAnalyzer calls appropriate SemanticAnalyzer for the given token

Author:

Sara Sprenkle

Method Summary

ExpressionTreeNode	generateExpressionTree(java.util.Stack<Token> tokens) From a stack of tokens in postfix order, creates an expression tree
static SemanticAnalyzer	getInstance()

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static SemanticAnalyzer getInstance()

generateExpressionTree

public ExpressionTreeNode generateExpressionTree(java.util.Stack<Token> tokens)

From a stack of tokens in postfix order, creates an expression tree

Specified by:

generateExpressionTree in interface SemanticAnalyzerInterface

Parameters:

tokens - in postfix order

Returns:

the root node of the expression tree.