Refactored packagename to net.sourceforge.phpdt.internal.compiler.ast

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / QualifiedThisReference.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/QualifiedThisReference.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/QualifiedThisReference.java
new file mode 100644 (file)
index 0000000..5dd3156
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/QualifiedThisReference.java
@@ -0,0 +1,118 @@
+/*******************************************************************************
+ * 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 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 net.sourceforge.phpdt.internal.compiler.ast;
+
+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 sourceStart, int sourceEnd) {
+               super(sourceStart, sourceEnd);
+               qualification = name;
+               this.sourceStart = name.sourceStart;
+       }
+
+       public FlowInfo analyseCode(
+               BlockScope currentScope,
+               FlowContext flowContext,
+               FlowInfo flowInfo) {
+
+               return flowInfo;
+       }
+
+       public FlowInfo analyseCode(
+               BlockScope currentScope,
+               FlowContext flowContext,
+               FlowInfo flowInfo,
+               boolean valueRequired) {
+
+               return flowInfo;
+       }
+
+       /**
+        * Code generation for QualifiedThisReference
+        *
+        * @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.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;
+               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;
+               this.currentCompatibleType = scope.referenceType().binding;
+               while (this.currentCompatibleType != null
+                       && this.currentCompatibleType != this.resolvedType) {
+                       depth++;
+                       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 (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) {
+                       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(
+           ASTVisitor visitor,
+               BlockScope blockScope) {
+
+               if (visitor.visit(this, blockScope)) {
+                       qualification.traverse(visitor, blockScope);
+               }
+               visitor.endVisit(this, blockScope);
+       }
+}