ConstantAnalyzer

java.lang.Object

picasso.parser.ConstantAnalyzer

All Implemented Interfaces:: SemanticAnalyzerInterface

public class ConstantAnalyzer extends Object implements SemanticAnalyzerInterface

Analyzer for a constant, must be between [-1, 1]

Author:: Sara Sprenkle

Field Summary

Fields

Modifier and Type

Field

Description

private static ConstantAnalyzer

singleton
Constructor Summary

Constructors

Constructor

Description

ConstantAnalyzer()
Method Summary

Modifier and Type

Method

Description

ExpressionTreeNode

generateExpressionTree(Stack<Token> tokens)

static ConstantAnalyzer

getInstance()

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- singleton
  
  private static ConstantAnalyzer singleton
Constructor Details
- ConstantAnalyzer
  
  public ConstantAnalyzer()
Method Details
- getInstance
  
  public static ConstantAnalyzer getInstance()
- generateExpressionTree
  
  public ExpressionTreeNode generateExpressionTree(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