picasso.parser
Class UnaryFunctionAnalyzer

java.lang.Object
  picasso.parser.UnaryFunctionAnalyzer

All Implemented Interfaces:

SemanticAnalyzerInterface

Direct Known Subclasses:

AbsAnalyzer, AtanAnalyzer, CeilAnalyzer, ClampAnalyzer, CosAnalyzer, ExpAnalyzer, FloorAnalyzer, LogAnalyzer, NegateAnalyzer, RandomColorAnalyzer, RgbToYCrCbAnalyzer, SinAnalyzer, WrapAnalyzer, YCRC2RGBRAnalyzer

public abstract class UnaryFunctionAnalyzer
extends java.lang.Object
implements SemanticAnalyzerInterface

Parses a function that takes one expression as a parameter. XXX: Not sure if this class is necessary.

Author:

Sara Sprenkle

Constructor Summary

UnaryFunctionAnalyzer()

Method Summary

abstract ExpressionTreeNode

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

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryFunctionAnalyzer

public UnaryFunctionAnalyzer()

Method Detail

generateExpressionTree

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

Specified by:

generateExpressionTree in interface SemanticAnalyzerInterface

Parameters:

tokens - , in postfix order

Returns:

the root node for the expression represented by the top token