openjava.ptree
Class FieldAccess

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

All Implemented Interfaces:

Cloneable, Expression, ParseTree, VariableInitializer

Direct Known Subclasses:

TableReference

public class FieldAccess

extends NonLeaf

implements Expression

The FieldAccess class represents a field access.

Here is an example:

     f().str
 

In this field access, you can get f() by getReferenceExpr() and can get str by getName() .
Warning: this class may have bugs around the expression.

See Also:

NonLeaf, Expression

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)	FieldAccess()
	FieldAccess(Expression expr, String name) An access to the specified field of the given expression.
	FieldAccess(OJClass clazz, String name) An access to the specified static field of the type.
	FieldAccess(String name) An access to the specified field of self.
	FieldAccess(TypeName typename, String name) An access to the specified static field of the type.

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.
boolean	equals(ParseTree o) Tests if this parse-tree-node's value equals to the specified ptree-node's.
String	getName() Gets the field name.
ParseTree	getReference()
Expression	getReferenceExpr() Gets the expression accessed.
TypeName	getReferenceType()
OJClass	getType(Environment env)
boolean	isTypeReference()
private static OJField	pickupField(OJClass reftype, String name)
void	setName(String name) Sets the field name.
void	setReferenceExpr(Expression expr) Sets the expression accessed.
void	setReferenceType(TypeName typename)
void	writeCode() Writes the code this parse-tree presents for.

Methods inherited from class openjava.ptree.NonLeaf

childrenAccept, childrenAreEqual, elementAt, 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, getObjectID, makeCopy, makeRecursiveCopy, replace, toFlattenString, toString

Constructor Detail

FieldAccess

public FieldAccess(Expression expr,
                   String name)

An access to the specified field of the given expression.

FieldAccess

public FieldAccess(TypeName typename,
                   String name)

An access to the specified static field of the type.

FieldAccess

public FieldAccess(OJClass clazz,
                   String name)

An access to the specified static field of the type.

FieldAccess

public FieldAccess(String name)

An access to the specified field of self.

FieldAccess

FieldAccess()

Method Detail

equals

public boolean equals(ParseTree o)

Description copied from interface: ParseTree

Tests if this parse-tree-node's value equals to the specified ptree-node's.

Specified by:

equals in interface ParseTree

Overrides:

equals in class NonLeaf

Returns:

true if two values are same.

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

getReference

public ParseTree getReference()

isTypeReference

public boolean isTypeReference()

getReferenceExpr

public Expression getReferenceExpr()

Gets the expression accessed.

Returns:

the expression accessed.

setReferenceExpr

public void setReferenceExpr(Expression expr)

Sets the expression accessed.

Parameters:

expr - the expression accessed.

getReferenceType

public TypeName getReferenceType()

setReferenceType

public void setReferenceType(TypeName typename)

getName

public String getName()

Gets the field name.

Returns:

the field name.

setName

public void setName(String name)

Sets the field name.

Parameters:

name - the field name.

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

pickupField

private static OJField pickupField(OJClass reftype,
                                   String name)