+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.jdt.internal.compiler.ast;
-
-import org.eclipse.jdt.internal.compiler.ASTVisitor;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.flow.FlowContext;
-import org.eclipse.jdt.internal.compiler.flow.FlowInfo;
-import org.eclipse.jdt.internal.compiler.lookup.*;
-
-public class ThisReference extends Reference {
-
- public static ThisReference implicitThis(){
-
- ThisReference implicitThis = new ThisReference(0, 0);
- implicitThis.bits |= IsImplicitThisMask;
- return implicitThis;
- }
-
- public ThisReference(int sourceStart, int sourceEnd) {
-
- this.sourceStart = sourceStart;
- this.sourceEnd = sourceEnd;
- }
-
- /*
- * @see Reference#analyseAssignment(...)
- */
- public FlowInfo analyseAssignment(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, Assignment assignment, boolean isCompound) {
-
- return flowInfo; // this cannot be assigned
- }
-
- public boolean checkAccess(MethodScope methodScope) {
-
- // this/super cannot be used in constructor call
- if (methodScope.isConstructorCall) {
- methodScope.problemReporter().fieldsOrThisBeforeConstructorInvocation(this);
- return false;
- }
-
- // static may not refer to this/super
- if (methodScope.isStatic) {
- methodScope.problemReporter().errorThisSuperInStatic(this);
- return false;
- }
- return true;
- }
-
- /*
- * @see Reference#generateAssignment(...)
- */
- public void generateAssignment(BlockScope currentScope, CodeStream codeStream, Assignment assignment, boolean valueRequired) {
-
- // this cannot be assigned
- }
-
- public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
-
- int pc = codeStream.position;
- if (valueRequired)
- codeStream.aload_0();
- if ((this.bits & IsImplicitThisMask) == 0) codeStream.recordPositionsFrom(pc, this.sourceStart);
- }
-
- /*
- * @see Reference#generateCompoundAssignment(...)
- */
- public void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired) {
-
- // this cannot be assigned
- }
-
- /*
- * @see org.eclipse.jdt.internal.compiler.ast.Reference#generatePostIncrement()
- */
- public void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired) {
-
- // this cannot be assigned
- }
-
- public boolean isImplicitThis() {
-
- return (this.bits & IsImplicitThisMask) != 0;
- }
-
- public boolean isThis() {
-
- return true ;
- }
-
- public StringBuffer printExpression(int indent, StringBuffer output){
-
- if (this.isImplicitThis()) return output;
- return output.append("this"); //$NON-NLS-1$
- }
-
- public TypeBinding resolveType(BlockScope scope) {
-
- constant = NotAConstant;
- if (!this.isImplicitThis() &&!checkAccess(scope.methodScope())) {
- return null;
- }
- return this.resolvedType = scope.enclosingSourceType();
- }
-
- public void traverse(ASTVisitor visitor, BlockScope blockScope) {
-
- visitor.visit(this, blockScope);
- visitor.endVisit(this, blockScope);
- }
-}