openjava.ptree
Class AssignmentExpression

java.lang.Object
  |
  +--openjava.ptree.ParseTreeObject
        |
        +--openjava.ptree.NonLeaf
              |
              +--openjava.ptree.AssignmentExpression

All Implemented Interfaces:

Cloneable, Expression, ParseTree, VariableInitializer

public class AssignmentExpression

extends NonLeaf

implements Expression

The AssignmentExpression class represents an assignment expression with an assignment operator.

See Also:

Expression

Field Summary

static int	ADD
static int	AND
static int	DIVIDE
static int	EQUALS
static int	MOD
static int	MULT
private int	opr
(package private) static String[]	opr_string
static int	OR
static int	SHIFT_L
static int	SHIFT_R
static int	SHIFT_RR
static int	SUB
static int	XOR

Fields inherited from class openjava.ptree.NonLeaf

Fields inherited from class openjava.ptree.ParseTreeObject

debugFlag, debugLevel, LN, out, writerStack

Constructor Summary

AssignmentExpression()

AssignmentExpression(Expression lexp, int opr, Expression rexp)
Allocates a new object.

AssignmentExpression(Expression lexp, String opr, Expression rexp)

Method Summary

void	accept(ParseTreeVisitor v) Accepts a ParseTreeVisitor object as the role of a Visitor in the Visitor pattern, as the role of an Element in the Visitor pattern.
Expression	getLeft() Gets the expression of the left operand.
int	getOperator() Gets the id number of the operator.
Expression	getRight() Gets the expression of the right operand.
OJClass	getType(Environment env)
ParseTree	makeCopy() Makes a new copy of this nonleaf-node as a ptree-node.
ParseTree	makeRecursiveCopy() Makes a new copy (another object) of this nonleaf-node recursively.
String	operatorString()
void	setLeft(Expression lexpr) Sets the expression of the left operand.
void	setOperator(int opr) Sets the id number of the operator.
void	setRight(Expression rexpr) Sets the expression of the right operand.
void	writeCode() Writes the code this parse-tree presents for.

Methods inherited from class openjava.ptree.NonLeaf

childrenAccept, childrenAreEqual, elementAt, equals, getComment, getContents, getLength, getRowType, replaceChildWith, set, set, set, set, set, set, set, set, set, setComment, setElementAt

Methods inherited from class openjava.ptree.ParseTreeObject

clone, eq, eq, equal, flushPrintWriter, getDebugFlag, getNest, getObjectID, getParent, getPrintWriter, getTab, hashCode, lastObjectID, popNest, popPrintWriter, pushNest, pushPrintWriter, replace, setDebugFlag, setDebugLevel, setNest, setParent, setPrintStream, setTab, toFlattenString, toString, writeDebug, writeDebugL, writeDebugLln, writeDebugln, writeDebugLR, writeDebugR, writeDebugRln, writeTab

Methods inherited from class java.lang.Object

equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface openjava.ptree.Expression

getRowType

Methods inherited from interface openjava.ptree.ParseTree

childrenAccept, eq, equals, getObjectID, replace, toFlattenString, toString

Field Detail

EQUALS

public static final int EQUALS

See Also:

Constant Field Values

MULT

public static final int MULT

See Also:

Constant Field Values

DIVIDE

public static final int DIVIDE

See Also:

Constant Field Values

MOD

public static final int MOD

See Also:

Constant Field Values

ADD

public static final int ADD

See Also:

Constant Field Values

SUB

public static final int SUB

See Also:

Constant Field Values

SHIFT_L

public static final int SHIFT_L

See Also:

Constant Field Values

SHIFT_R

public static final int SHIFT_R

See Also:

Constant Field Values

SHIFT_RR

public static final int SHIFT_RR

See Also:

Constant Field Values

AND

public static final int AND

See Also:

Constant Field Values

XOR

public static final int XOR

See Also:

Constant Field Values

OR

public static final int OR

See Also:

Constant Field Values

opr_string

static final String[] opr_string

opr

private int opr

Constructor Detail

AssignmentExpression

public AssignmentExpression(Expression lexp,
                            int opr,
                            Expression rexp)

Allocates a new object.

Parameters:

lexp - the left expression.

opr - the id number of the operator.

rexp - the right expression.

AssignmentExpression

public AssignmentExpression(Expression lexp,
                            String opr,
                            Expression rexp)

AssignmentExpression

public AssignmentExpression()

Method Detail

makeRecursiveCopy

public ParseTree makeRecursiveCopy()

Description copied from interface: ParseTree

Makes a new copy (another object) of this nonleaf-node recursively. The objects contained by this object will also be copied.

Specified by:

makeRecursiveCopy in interface ParseTree

Overrides:

makeRecursiveCopy in class NonLeaf

Returns:

the copy of this nonleaf-node as a ptree-node.

makeCopy

public ParseTree makeCopy()

Description copied from interface: ParseTree

Makes a new copy of this nonleaf-node as a ptree-node. The objects contained by the new object are same as these contained by the original object.

Specified by:

makeCopy in interface ParseTree

Overrides:

makeCopy in class ParseTreeObject

Returns:

the copy of this nonleaf-node as a ptree-node.

writeCode

public void writeCode()

Description copied from class: NonLeaf

Writes the code this parse-tree presents for.

Specified by:

writeCode in interface ParseTree

Overrides:

writeCode in class NonLeaf

getLeft

public Expression getLeft()

Gets the expression of the left operand.

Returns:

the left expression.

setLeft

public void setLeft(Expression lexpr)

Sets the expression of the left operand.

Parameters:

lexpr - the left expression.

getRight

public Expression getRight()

Gets the expression of the right operand.

Returns:

the right expression.

setRight

public void setRight(Expression rexpr)

Sets the expression of the right operand.

Parameters:

rexpr - the right expression.

getOperator

public int getOperator()

Gets the id number of the operator.

Returns:

the id number of the operator.

setOperator

public void setOperator(int opr)

Sets the id number of the operator.

Parameters:

opr - the id number of the operator.

operatorString

public String operatorString()

accept

public void accept(ParseTreeVisitor v)
            throws ParseTreeException

Description copied from interface: ParseTree

Accepts a ParseTreeVisitor object as the role of a Visitor in the Visitor pattern, as the role of an Element in the Visitor pattern.

This invoke an appropriate visit() method on the accepted visitor.

Specified by:

accept in interface ParseTree

Specified by:

accept in class ParseTreeObject

Parameters:

v - a visitor

ParseTreeException

getType

public OJClass getType(Environment env)
                throws Exception

Specified by:

getType in interface Expression

Exception