jeops.expressions
Class BinaryJavaExpr

java.lang.Object
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        +--jeops.expressions.BinaryJavaExpr

public class BinaryJavaExpr

extends JavaExpr

This class models a binary expression of (our subset of) the java language. The unary expressions currently supported are:

• Boolean expressions
  • Logical OR (||)
  • Logical AND (&&)
• Relational expressions
  • Equality (==)
  • Inequality (!=)
  • Greater Than (>)
  • Greater or Equals (>=)
  • Less Than (<)
  • Less or Equals (<=)
• Arithmetic expressions
  • Sum (+)
  • Subtraction (-)
  • Product (*)
  • Division (/)

Version:

0.01 02 Mar 1999

Author:

Carlos Figueira Filho (csff@di.ufpe.br)

Field Summary

static int	DIV Constant used to indicate that this expression represents a division.
static int	EQ Constant used to indicate that this expression represents an equality comparison.
static int	GEQ Constant used to indicate that this expression represents a greater than or equals comparison.
static int	GT Constant used to indicate that this expression represents a greater than comparison.
static int	LAND Constant used to indicate that this expression represents a logical AND.
static int	LEQ Constant used to indicate that this expression represents a less than or equals comparison.
static int	LOR Constant used to indicate that this expression represents a logical OR.
static int	LT Constant used to indicate that this expression represents a less than comparison.
static int	MUL Constant used to indicate that this expression represents a multiplication.
static int	NEQ Constant used to indicate that this expression represents an inequality comparison.
static int	SUB Constant used to indicate that this expression represents a subtraction.
static int	SUM Constant used to indicate that this expression represents a sum.

Fields inherited from class jeops.expressions.JavaExpr

BOOL, INT, OBJ

Constructor Summary

BinaryJavaExpr(JavaExpr left, JavaExpr right, int binaryType)
Class constructor.

Method Summary

void	dump(int spaces) Prints the tree of this expression with the given identation.
java.lang.Class	getClasse() Returns an object representing the class of this expression.

Methods inherited from class jeops.expressions.JavaExpr

dump, evaluateBool, evaluateInt, evaluateObj, identObjetos, numIdentObjetos, tipo

Methods inherited from class java.lang.Object

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

Field Detail

LOR

public static final int LOR

Constant used to indicate that this expression represents a logical OR.

LAND

public static final int LAND

Constant used to indicate that this expression represents a logical AND.

EQ

public static final int EQ

Constant used to indicate that this expression represents an equality comparison.

NEQ

public static final int NEQ

Constant used to indicate that this expression represents an inequality comparison.

GT

public static final int GT

Constant used to indicate that this expression represents a greater than comparison.

GEQ

public static final int GEQ

Constant used to indicate that this expression represents a greater than or equals comparison.

LT

public static final int LT

Constant used to indicate that this expression represents a less than comparison.

LEQ

public static final int LEQ

Constant used to indicate that this expression represents a less than or equals comparison.

SUM

public static final int SUM

Constant used to indicate that this expression represents a sum.

SUB

public static final int SUB

Constant used to indicate that this expression represents a subtraction.

MUL

public static final int MUL

Constant used to indicate that this expression represents a multiplication.

DIV

public static final int DIV

Constant used to indicate that this expression represents a division.

Constructor Detail

BinaryJavaExpr

public BinaryJavaExpr(JavaExpr left,
                      JavaExpr right,
                      int binaryType)

Class constructor.

Parameters:

left - the left subexpression of this binary expression.

right - the right subexpression of this binary expression.

binaryType - the type of this expression.

See Also:

LOR, LAND, EQ, NEQ, GT, GEQ, LT, LEQ, SUM, SUB, MUL, DIV

Method Detail

dump

public void dump(int spaces)

Prints the tree of this expression with the given identation. Useful for debugging.

Overrides:

dump in class JavaExpr

Parameters:

spaces - the identation level for this dumping.

getClasse

public java.lang.Class getClasse()

Returns an object representing the class of this expression.

Overrides:

getClasse in class JavaExpr