removed Makefile; lifted repo/org.ibex.tool/src/ to src/

[org.ibex.tool.git] / src / org / eclipse / jdt / internal / compiler / ast / ThisReference.java

diff --git a/src/org/eclipse/jdt/internal/compiler/ast/ThisReference.java b/src/org/eclipse/jdt/internal/compiler/ast/ThisReference.java
new file mode 100644 (file)
index 0000000..78ccdfa
--- /dev/null
+++ b/src/org/eclipse/jdt/internal/compiler/ast/ThisReference.java
@@ -0,0 +1,120 @@
+/*******************************************************************************
+ * 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);
+       }
+}