Refactored packagename to net.sourceforge.phpdt.internal.compiler.ast
[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / InstanceOfExpression.java
index db4cd45..22e3e57 100644 (file)
@@ -1,19 +1,25 @@
 /*******************************************************************************
- * 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.ArrayBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.MethodBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.Scope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
+
 
 public class InstanceOfExpression extends OperatorExpression {
 
@@ -44,13 +50,15 @@ public class InstanceOfExpression extends OperatorExpression {
 
        public final boolean areTypesCastCompatible(
                BlockScope scope,
-               TypeBinding castTb,
-               TypeBinding expressionTb) {
+               TypeBinding castType,
+               TypeBinding expressionType) {
 
                //      see specifications p.68
                //A more cpmplete version of this method is provided on
                //CastExpression (it deals with constant and need runtime checkcast)
 
+               if (castType == expressionType) return true;
+               
                //by grammatical construction, the first test is ALWAYS false
                //if (castTb.isBaseType())
                //{     if (expressionTb.isBaseType())
@@ -71,33 +79,32 @@ public class InstanceOfExpression extends OperatorExpression {
                //else
                { //-------------checkcast to something which is NOT a basetype----------------------------------       
 
-                       if (NullBinding == expressionTb)
-                               //null is compatible with every thing .... 
-                               {
+                       //null is compatible with every thing .... 
+                       if (NullBinding == expressionType) {
                                return true;
                        }
-                       if (expressionTb.isArrayType()) {
-                               if (castTb.isArrayType()) {
+                       if (expressionType.isArrayType()) {
+                               if (castType.isArrayType()) {
                                        //------- (castTb.isArray) expressionTb.isArray -----------
-                                       TypeBinding expressionEltTb = ((ArrayBinding) expressionTb).elementsType(scope);
+                                       TypeBinding expressionEltTb = ((ArrayBinding) expressionType).elementsType(scope);
                                        if (expressionEltTb.isBaseType())
                                                // <---stop the recursion------- 
-                                               return ((ArrayBinding) castTb).elementsType(scope) == expressionEltTb;
+                                               return ((ArrayBinding) castType).elementsType(scope) == expressionEltTb;
                                        //recursivly on the elts...
                                        return areTypesCastCompatible(
                                                scope,
-                                               ((ArrayBinding) castTb).elementsType(scope),
+                                               ((ArrayBinding) castType).elementsType(scope),
                                                expressionEltTb);
                                }
-                               if (castTb.isClass()) {
+                               if (castType.isClass()) {
                                        //------(castTb.isClass) expressionTb.isArray ---------------   
-                                       if (scope.isJavaLangObject(castTb))
+                                       if (scope.isJavaLangObject(castType))
                                                return true;
                                        return false;
                                }
-                               if (castTb.isInterface()) {
+                               if (castType.isInterface()) {
                                        //------- (castTb.isInterface) expressionTb.isArray -----------
-                                       if (scope.isJavaLangCloneable(castTb) || scope.isJavaIoSerializable(castTb)) {
+                                       if (scope.isJavaLangCloneable(castType) || scope.isJavaIoSerializable(castType)) {
                                                return true;
                                        }
                                        return false;
@@ -105,33 +112,33 @@ public class InstanceOfExpression extends OperatorExpression {
 
                                return false;
                        }
-                       if (expressionTb.isBaseType()) {
+                       if (expressionType.isBaseType()) {
                                return false;
                        }
-                       if (expressionTb.isClass()) {
-                               if (castTb.isArrayType()) {
+                       if (expressionType.isClass()) {
+                               if (castType.isArrayType()) {
                                        // ---- (castTb.isArray) expressionTb.isClass -------
-                                       if (scope.isJavaLangObject(expressionTb)) {
+                                       if (scope.isJavaLangObject(expressionType)) {
                                                return true;
                                        } else {
                                                return false;
                                        }
                                }
-                               if (castTb.isClass()) { // ----- (castTb.isClass) expressionTb.isClass ------ 
-                                       if (scope.areTypesCompatible(expressionTb, castTb))
+                               if (castType.isClass()) { // ----- (castTb.isClass) expressionTb.isClass ------ 
+                                       if (expressionType.isCompatibleWith(castType))
                                                return true;
                                        else {
-                                               if (scope.areTypesCompatible(castTb, expressionTb)) {
+                                               if (castType.isCompatibleWith(expressionType)) {
                                                        return true;
                                                }
                                                return false;
                                        }
                                }
-                               if (castTb.isInterface()) {
+                               if (castType.isInterface()) {
                                        // ----- (castTb.isInterface) expressionTb.isClass -------  
-                                       if (((ReferenceBinding) expressionTb).isFinal()) {
+                                       if (((ReferenceBinding) expressionType).isFinal()) {
                                                //no subclass for expressionTb, thus compile-time check is valid
-                                               if (scope.areTypesCompatible(expressionTb, castTb))
+                                               if (expressionType.isCompatibleWith(castType))
                                                        return true;
                                                return false;
                                        } else {
@@ -141,38 +148,37 @@ public class InstanceOfExpression extends OperatorExpression {
 
                                return false;
                        }
-                       if (expressionTb.isInterface()) {
-                               if (castTb.isArrayType()) {
+                       if (expressionType.isInterface()) {
+                               if (castType.isArrayType()) {
                                        // ----- (castTb.isArray) expressionTb.isInterface ------
-                                       if (scope.isJavaLangCloneable(expressionTb)
-                                               || scope.isJavaIoSerializable(expressionTb))
+                                       if (scope.isJavaLangCloneable(expressionType)
+                                               || scope.isJavaIoSerializable(expressionType))
                                                //potential runtime error
                                                {
                                                return true;
                                        }
                                        return false;
                                }
-                               if (castTb.isClass()) {
+                               if (castType.isClass()) {
                                        // ----- (castTb.isClass) expressionTb.isInterface --------
-                                       if (scope.isJavaLangObject(castTb))
+                                       if (scope.isJavaLangObject(castType))
                                                return true;
-                                       if (((ReferenceBinding) castTb).isFinal()) {
+                                       if (((ReferenceBinding) castType).isFinal()) {
                                                //no subclass for castTb, thus compile-time check is valid
-                                               if (scope.areTypesCompatible(castTb, expressionTb)) {
+                                               if (castType.isCompatibleWith(expressionType)) {
                                                        return true;
                                                }
                                                return false;
                                        }
                                        return true;
                                }
-                               if (castTb.isInterface()) {
+                               if (castType.isInterface()) {
                                        // ----- (castTb.isInterface) expressionTb.isInterface -------
-                                       if (castTb != expressionTb
-                                               && (Scope.compareTypes(castTb, expressionTb) == NotRelated)) {
-                                               MethodBinding[] castTbMethods = ((ReferenceBinding) castTb).methods();
+                                       if ((Scope.compareTypes(castType, expressionType) == NotRelated)) {
+                                               MethodBinding[] castTbMethods = ((ReferenceBinding) castType).methods();
                                                int castTbMethodsLength = castTbMethods.length;
                                                MethodBinding[] expressionTbMethods =
-                                                       ((ReferenceBinding) expressionTb).methods();
+                                                       ((ReferenceBinding) expressionType).methods();
                                                int expressionTbMethodsLength = expressionTbMethods.length;
                                                for (int i = 0; i < castTbMethodsLength; i++) {
                                                        for (int j = 0; j < expressionTbMethodsLength; j++) {
@@ -198,46 +204,50 @@ public class InstanceOfExpression extends OperatorExpression {
        /**
         * Code generation for instanceOfExpression
         *
-        * @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;
-               expression.generateCode(currentScope, codeStream, true);
-               codeStream.instance_of(type.binding);
-               if (!valueRequired)
-                       codeStream.pop();
-               codeStream.recordPositionsFrom(pc, this.sourceStart);
-       }
+//     public void generateCode(
+//             BlockScope currentScope,
+//             CodeStream codeStream,
+//             boolean valueRequired) {
+//
+//             int pc = codeStream.position;
+//             expression.generateCode(currentScope, codeStream, true);
+//             codeStream.instance_of(type.resolvedType);
+//             if (!valueRequired)
+//                     codeStream.pop();
+//             codeStream.recordPositionsFrom(pc, this.sourceStart);
+//     }
 
        public TypeBinding resolveType(BlockScope scope) {
 
                constant = NotAConstant;
-               TypeBinding expressionTb = expression.resolveType(scope);
-               TypeBinding checkTb = type.resolveType(scope);
-               if (expressionTb == null || checkTb == null)
+               TypeBinding expressionType = expression.resolveType(scope);
+               TypeBinding checkType = type.resolveType(scope);
+               if (expressionType == null || checkType == null)
                        return null;
 
-               if (!areTypesCastCompatible(scope, checkTb, expressionTb)) {
-                       scope.problemReporter().notCompatibleTypesError(this, expressionTb, checkTb);
+               if (!areTypesCastCompatible(scope, checkType, expressionType)) {
+                       scope.problemReporter().notCompatibleTypesError(this, expressionType, checkType);
                        return null;
                }
-               this.typeBinding = BooleanBinding;
+               this.resolvedType = BooleanBinding;
                return BooleanBinding;
        }
+       public StringBuffer printExpressionNoParenthesis(int indent, StringBuffer output) {
 
+               expression.printExpression(indent, output).append(" instanceof "); //$NON-NLS-1$
+               return type.print(0, output);
+       }
        public String toStringExpressionNoParenthesis() {
 
                return expression.toStringExpression() + " instanceof " + //$NON-NLS-1$
                type.toString(0);
        }
 
-       public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
+       public void traverse(ASTVisitor visitor, BlockScope scope) {
 
                if (visitor.visit(this, scope)) {
                        expression.traverse(visitor, scope);
@@ -245,4 +255,4 @@ public class InstanceOfExpression extends OperatorExpression {
                }
                visitor.endVisit(this, scope);
        }
-}
\ No newline at end of file
+}