/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v0.5
+ * 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-v05.html
+ * http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
- ******************************************************************************/
+ *******************************************************************************/
package net.sourceforge.phpdt.internal.compiler.ast;
-import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
-import net.sourceforge.phpdt.internal.compiler.codegen.*;
-import net.sourceforge.phpdt.internal.compiler.flow.*;
-import net.sourceforge.phpdt.internal.compiler.lookup.*;
+import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
public class QualifiedThisReference extends ThisReference {
-
+
public TypeReference qualification;
- ReferenceBinding currentCompatibleType;
- public QualifiedThisReference(TypeReference name, int pos, int sourceEnd) {
+ ReferenceBinding currentCompatibleType;
+ public QualifiedThisReference(TypeReference name, int sourceStart,
+ int sourceEnd) {
+ super(sourceStart, sourceEnd);
qualification = name;
- this.sourceEnd = sourceEnd;
this.sourceStart = name.sourceStart;
}
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo) {
- manageEnclosingInstanceAccessIfNecessary(currentScope);
return flowInfo;
}
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo,
- boolean valueRequired) {
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo, boolean valueRequired) {
- if (valueRequired) {
- manageEnclosingInstanceAccessIfNecessary(currentScope);
- }
return flowInfo;
}
- protected boolean checkAccess(
- MethodScope methodScope,
- TypeBinding targetType) {
-
- // 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().incorrectEnclosingInstanceReference(
- this,
- targetType);
- return false;
- }
- return true;
- }
-
/**
* Code generation for QualifiedThisReference
- *
- * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
- * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
- * @param valueRequired boolean
+ *
+ * @param currentScope
+ * net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
+ * @param codeStream
+ * net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
+ * @param valueRequired
+ * boolean
*/
- public void generateCode(
- BlockScope currentScope,
- CodeStream codeStream,
- boolean valueRequired) {
-
- int pc = codeStream.position;
- if (valueRequired) {
- if ((bits & DepthMASK) != 0) {
- Object[] emulationPath =
- currentScope.getExactEmulationPath(currentCompatibleType);
- if (emulationPath == null) {
- // internal error, per construction we should have found it
- currentScope.problemReporter().needImplementation();
- } else {
- codeStream.generateOuterAccess(emulationPath, this, currentScope);
- }
- } else {
- // nothing particular after all
- codeStream.aload_0();
- }
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
- }
-
- void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope) {
-
- currentScope.emulateOuterAccess(
- (SourceTypeBinding) currentCompatibleType,
- false);
- // request cascade of accesses
- }
-
+ // public void generateCode(
+ // BlockScope currentScope,
+ // CodeStream codeStream,
+ // boolean valueRequired) {
+ //
+ // int pc = codeStream.position;
+ // if (valueRequired) {
+ // if ((bits & DepthMASK) != 0) {
+ // Object[] emulationPath =
+ // currentScope.getEmulationPath(this.currentCompatibleType, true /*only
+ // exact match*/, false/*consider enclosing arg*/);
+ // codeStream.generateOuterAccess(emulationPath, this,
+ // this.currentCompatibleType, currentScope);
+ // } else {
+ // // nothing particular after all
+ // codeStream.aload_0();
+ // }
+ // }
+ // codeStream.recordPositionsFrom(pc, this.sourceStart);
+ // }
public TypeBinding resolveType(BlockScope scope) {
constant = NotAConstant;
- TypeBinding qualificationTb = qualification.resolveType(scope);
- if (qualificationTb == null)
+ this.resolvedType = qualification.resolveType(scope);
+ if (this.resolvedType == null)
return null;
// the qualification MUST exactly match some enclosing type name
// Its possible to qualify 'this' by the name of the current class
int depth = 0;
- currentCompatibleType = scope.referenceType().binding;
- while (currentCompatibleType != null
- && currentCompatibleType != qualificationTb) {
+ this.currentCompatibleType = scope.referenceType().binding;
+ while (this.currentCompatibleType != null
+ && this.currentCompatibleType != this.resolvedType) {
depth++;
- currentCompatibleType =
- currentCompatibleType.isStatic() ? null : currentCompatibleType.enclosingType();
+ this.currentCompatibleType = this.currentCompatibleType.isStatic() ? null
+ : this.currentCompatibleType.enclosingType();
}
- bits &= ~DepthMASK; // flush previous depth if any
+ bits &= ~DepthMASK; // flush previous depth if any
bits |= (depth & 0xFF) << DepthSHIFT; // encoded depth into 8 bits
- if (currentCompatibleType == null) {
- scope.problemReporter().incorrectEnclosingInstanceReference(
- this,
- qualificationTb);
- return null;
+ if (this.currentCompatibleType == null) {
+ scope.problemReporter().noSuchEnclosingInstance(this.resolvedType,
+ this, false);
+ return this.resolvedType;
}
// Ensure one cannot write code like: B() { super(B.this); }
if (depth == 0) {
- if (!checkAccess(scope.methodScope(), qualificationTb))
- return null;
- } else {
- // Could also be targeting an enclosing instance inside a super constructor invocation
- // class X {
- // public X(int i) {
- // this(new Object() { Object obj = X.this; });
- // }
- // }
-
- MethodScope methodScope = scope.methodScope();
- while (methodScope != null) {
- if (methodScope.enclosingSourceType() == currentCompatibleType) {
- if (!this.checkAccess(methodScope, qualificationTb))
- return null;
- break;
- }
- methodScope = methodScope.parent.methodScope();
- }
- }
- return qualificationTb;
+ checkAccess(scope.methodScope());
+ } // if depth>0, path emulation will diagnose bad scenarii
+ return this.resolvedType;
}
public String toStringExpression() {
return qualification.toString(0) + ".this"; //$NON-NLS-1$
}
- public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
- BlockScope blockScope) {
+ public void traverse(ASTVisitor visitor, BlockScope blockScope) {
if (visitor.visit(this, blockScope)) {
qualification.traverse(visitor, blockScope);
}
visitor.endVisit(this, blockScope);
}
-}
\ No newline at end of file
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff