openjava.ptree
Class CastExpression

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

All Implemented Interfaces:

Cloneable, Expression, ParseTree, VariableInitializer

public class CastExpression

extends NonLeaf

implements Expression

The CastExpression class represents a cast expression of parse tree.
If the operator in the expression of the right operand has week unity, this automatically produces the code in which the right operand is enclosed by parenthesises.
In the case the caster is int and the right operand to be casted is p + q, this produces the code :

     (int) (p + q)
 

See Also:

NonLeaf, Expression, TypeName

Field Summary

Fields inherited from class openjava.ptree.NonLeaf

Fields inherited from class openjava.ptree.ParseTreeObject

debugFlag, debugLevel, LN, out, writerStack

Constructor Summary

(package private)	CastExpression()
	CastExpression(OJClass type, Expression expr)
	CastExpression(TypeName ts, Expression expr) Allocates a new object.

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	getExpression() Gets the expression of the operand to be casted in this expression.
OJClass	getType(Environment env)
TypeName	getTypeSpecifier() Gets the type specifier to cast in this expression.
void	setExpression(Expression expr) Sets the expression of the operand to be casted in this expression.
void	setTypeSpecifier(TypeName tspec) Sets the type specifier to cast in this expression.
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, makeRecursiveCopy, 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, makeCopy, 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, makeCopy, makeRecursiveCopy, replace, toFlattenString, toString

Constructor Detail

CastExpression

public CastExpression(TypeName ts,
                      Expression expr)

Allocates a new object.

Parameters:

ts - the type specifier to cast in this expression.

expr - the expression to be casted in this expression.

CastExpression

public CastExpression(OJClass type,
                      Expression expr)

CastExpression

CastExpression()

Method Detail

writeCode

public void writeCode()

Deprecated.

Description copied from class: NonLeaf

Writes the code this parse-tree presents for.

Specified by:

writeCode in interface ParseTree

Overrides:

writeCode in class NonLeaf

getTypeSpecifier

public TypeName getTypeSpecifier()

Gets the type specifier to cast in this expression.

Returns:

the type specifier.

setTypeSpecifier

public void setTypeSpecifier(TypeName tspec)

Sets the type specifier to cast in this expression.

Parameters:

tspec - the type specifier.

getExpression

public Expression getExpression()

Gets the expression of the operand to be casted in this expression.

Returns:

the expression.

setExpression

public void setExpression(Expression expr)

Sets the expression of the operand to be casted in this expression.

Parameters:

expr - the expression.

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