/*******************************************************************************
- * 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.CodeStream;
+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.MethodScope;
import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
-import net.sourceforge.phpdt.internal.compiler.lookup.SourceTypeBinding;
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) {
-
+
+ public QualifiedThisReference(TypeReference name, int sourceStart, int sourceEnd) {
+ super(sourceStart, sourceEnd);
qualification = name;
- this.sourceEnd = sourceEnd;
this.sourceStart = name.sourceStart;
}
FlowContext flowContext,
FlowInfo flowInfo) {
- manageEnclosingInstanceAccessIfNecessary(currentScope);
return flowInfo;
}
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 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)
- return 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 |= (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() {
}
public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
+ ASTVisitor visitor,
BlockScope blockScope) {
if (visitor.visit(this, blockScope)) {
}
visitor.endVisit(this, blockScope);
}
-}
\ No newline at end of file
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff