Package picasso.parser

Class EqualsAnalyzer

java.lang.Object

picasso.parser.BinaryFunctionAnalyzer

picasso.parser.EqualsAnalyzer

All Implemented Interfaces:

SemanticAnalyzerInterface

public class EqualsAnalyzer
extends BinaryFunctionAnalyzer

Constructor Summary

Constructors

Constructor	Description
EqualsAnalyzer()

Method Summary

Modifier and Type	Method	Description
protected ExpressionTreeNode	createBinaryFunctionNode(ExpressionTreeNode left, ExpressionTreeNode right)	Creates the specific binary function node.
ExpressionTreeNode	generateExpressionTree(Stack<Token> tokens)
protected boolean	isValidOperatorToken(Token token)	Checks if the given token is of the expected type.

Methods inherited from class java.lang.Object

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

Constructor Detail

EqualsAnalyzer

public EqualsAnalyzer()

Method Detail

isValidOperatorToken

protected boolean isValidOperatorToken(Token token)

Description copied from class: BinaryFunctionAnalyzer

Checks if the given token is of the expected type.

Specified by:

isValidOperatorToken in class BinaryFunctionAnalyzer

Parameters:

token - the token to validate

Returns:

true if the token matches the expected type, false otherwise

createBinaryFunctionNode

protected ExpressionTreeNode createBinaryFunctionNode(ExpressionTreeNode left,
                                                      ExpressionTreeNode right)

Description copied from class: BinaryFunctionAnalyzer

Creates the specific binary function node.

Specified by:

createBinaryFunctionNode in class BinaryFunctionAnalyzer

Parameters:

left - the left operand

right - the right operand

Returns:

the binary function node

generateExpressionTree

public ExpressionTreeNode generateExpressionTree(Stack<Token> tokens)

Specified by:

generateExpressionTree in interface SemanticAnalyzerInterface

Overrides:

generateExpressionTree in class BinaryFunctionAnalyzer

Parameters:

tokens - in postfix order

Returns:

the root node for the expression represented by the top token