1) Moved net.sourceforge.phpeclipse.ui\src\net\sourceforge\phpdt back to net.sourcefo...
[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / InstanceOfExpression.java
index 27c5e24..05ee78d 100644 (file)
@@ -1,17 +1,16 @@
 /*******************************************************************************
- * 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.ArrayBinding;
@@ -24,12 +23,11 @@ import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
 public class InstanceOfExpression extends OperatorExpression {
 
        public Expression expression;
+
        public TypeReference type;
 
-       public InstanceOfExpression(
-               Expression expression,
-               TypeReference type,
-               int operator) {
+       public InstanceOfExpression(Expression expression, TypeReference type,
+                       int operator) {
 
                this.expression = expression;
                this.type = type;
@@ -38,72 +36,74 @@ public class InstanceOfExpression extends OperatorExpression {
                this.sourceEnd = type.sourceEnd;
        }
 
-       public FlowInfo analyseCode(
-               BlockScope currentScope,
-               FlowContext flowContext,
-               FlowInfo flowInfo) {
+       public FlowInfo analyseCode(BlockScope currentScope,
+                       FlowContext flowContext, FlowInfo flowInfo) {
 
-               return expression
-                       .analyseCode(currentScope, flowContext, flowInfo)
-                       .unconditionalInits();
+               return expression.analyseCode(currentScope, flowContext, flowInfo)
+                               .unconditionalInits();
        }
 
-       public final boolean areTypesCastCompatible(
-               BlockScope scope,
-               TypeBinding castTb,
-               TypeBinding expressionTb) {
-
-               //      see specifications p.68
-               //A more cpmplete version of this method is provided on
-               //CastExpression (it deals with constant and need runtime checkcast)
-
-               //by grammatical construction, the first test is ALWAYS false
-               //if (castTb.isBaseType())
-               //{     if (expressionTb.isBaseType())
-               //      {       if (expression.isConstantValueOfTypeAssignableToType(expressionTb,castTb))
-               //              {       return true;}
-               //              else
-               //              {       if (expressionTb==castTb)
-               //                      {       return true;}
-               //                      else 
-               //                      {       if (scope.areTypesCompatible(expressionTb,castTb))
-               //                              {       return true; }
+       public final boolean areTypesCastCompatible(BlockScope scope,
+                       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())
+               // { if
+               // (expression.isConstantValueOfTypeAssignableToType(expressionTb,castTb))
+               // { return true;}
+               // else
+               // { if (expressionTb==castTb)
+               // { return true;}
+               // else
+               // { if (scope.areTypesCompatible(expressionTb,castTb))
+               // { return true; }
                //                              
-               //                              if (BaseTypeBinding.isNarrowing(castTb.id,expressionTb.id))
-               //                              {       return true;}
-               //                              return false;}}}
-               //      else
-               //      {       return false; }}
-               //else
-               { //-------------checkcast to something which is NOT a basetype----------------------------------       
-
-                       if (NullBinding == expressionTb)
-                               //null is compatible with every thing .... 
-                               {
+               // if (BaseTypeBinding.isNarrowing(castTb.id,expressionTb.id))
+               // { return true;}
+               // return false;}}}
+               // else
+               // { return false; }}
+               // else
+               { // -------------checkcast to something which is NOT a
+                       // basetype----------------------------------
+
+                       // null is compatible with every thing ....
+                       if (NullBinding == expressionType) {
                                return true;
                        }
-                       if (expressionTb.isArrayType()) {
-                               if (castTb.isArrayType()) {
-                                       //------- (castTb.isArray) expressionTb.isArray -----------
-                                       TypeBinding expressionEltTb = ((ArrayBinding) expressionTb).elementsType(scope);
+                       if (expressionType.isArrayType()) {
+                               if (castType.isArrayType()) {
+                                       // ------- (castTb.isArray) expressionTb.isArray -----------
+                                       TypeBinding expressionEltTb = ((ArrayBinding) expressionType)
+                                                       .elementsType(scope);
                                        if (expressionEltTb.isBaseType())
-                                               // <---stop the recursion------- 
-                                               return ((ArrayBinding) castTb).elementsType(scope) == expressionEltTb;
-                                       //recursivly on the elts...
-                                       return areTypesCastCompatible(
-                                               scope,
-                                               ((ArrayBinding) castTb).elementsType(scope),
-                                               expressionEltTb);
+                                               // <---stop the recursion-------
+                                               return ((ArrayBinding) castType).elementsType(scope) == expressionEltTb;
+                                       // recursivly on the elts...
+                                       return areTypesCastCompatible(scope,
+                                                       ((ArrayBinding) castType).elementsType(scope),
+                                                       expressionEltTb);
                                }
-                               if (castTb.isClass()) {
-                                       //------(castTb.isClass) expressionTb.isArray ---------------   
-                                       if (scope.isJavaLangObject(castTb))
+                               if (castType.isClass()) {
+                                       // ------(castTb.isClass) expressionTb.isArray
+                                       // ---------------
+                                       if (scope.isJavaLangObject(castType))
                                                return true;
                                        return false;
                                }
-                               if (castTb.isInterface()) {
-                                       //------- (castTb.isInterface) expressionTb.isArray -----------
-                                       if (scope.isJavaLangCloneable(castTb) || scope.isJavaIoSerializable(castTb)) {
+                               if (castType.isInterface()) {
+                                       // ------- (castTb.isInterface) expressionTb.isArray
+                                       // -----------
+                                       if (scope.isJavaLangCloneable(castType)
+                                                       || scope.isJavaIoSerializable(castType)) {
                                                return true;
                                        }
                                        return false;
@@ -111,33 +111,35 @@ 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 (BlockScope.areTypesCompatible(expressionTb, castTb))
+                               if (castType.isClass()) { // ----- (castTb.isClass)
+                                                                                       // expressionTb.isClass ------
+                                       if (expressionType.isCompatibleWith(castType))
                                                return true;
                                        else {
-                                               if (BlockScope.areTypesCompatible(castTb, expressionTb)) {
+                                               if (castType.isCompatibleWith(expressionType)) {
                                                        return true;
                                                }
                                                return false;
                                        }
                                }
-                               if (castTb.isInterface()) {
-                                       // ----- (castTb.isInterface) expressionTb.isClass -------  
-                                       if (((ReferenceBinding) expressionTb).isFinal()) {
-                                               //no subclass for expressionTb, thus compile-time check is valid
-                                               if (BlockScope.areTypesCompatible(expressionTb, castTb))
+                               if (castType.isInterface()) {
+                                       // ----- (castTb.isInterface) expressionTb.isClass -------
+                                       if (((ReferenceBinding) expressionType).isFinal()) {
+                                               // no subclass for expressionTb, thus compile-time check
+                                               // is valid
+                                               if (expressionType.isCompatibleWith(castType))
                                                        return true;
                                                return false;
                                        } else {
@@ -147,44 +149,47 @@ 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))
-                                               //potential runtime error
-                                               {
+                                       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()) {
-                                               //no subclass for castTb, thus compile-time check is valid
-                                               if (BlockScope.areTypesCompatible(castTb, expressionTb)) {
+                                       if (((ReferenceBinding) castType).isFinal()) {
+                                               // no subclass for castTb, thus compile-time check is
+                                               // valid
+                                               if (castType.isCompatibleWith(expressionType)) {
                                                        return true;
                                                }
                                                return false;
                                        }
                                        return true;
                                }
-                               if (castTb.isInterface()) {
-                                       // ----- (castTb.isInterface) expressionTb.isInterface -------
-                                       if (castTb != expressionTb
-                                               && (Scope.compareTypes(castTb, expressionTb) == NotRelated)) {
-                                               MethodBinding[] castTbMethods = ((ReferenceBinding) castTb).methods();
+                               if (castType.isInterface()) {
+                                       // ----- (castTb.isInterface) expressionTb.isInterface
+                                       // -------
+                                       if ((Scope.compareTypes(castType, expressionType) == NotRelated)) {
+                                               MethodBinding[] castTbMethods = ((ReferenceBinding) castType)
+                                                               .methods();
                                                int castTbMethodsLength = castTbMethods.length;
-                                               MethodBinding[] expressionTbMethods =
-                                                       ((ReferenceBinding) expressionTb).methods();
+                                               MethodBinding[] expressionTbMethods = ((ReferenceBinding) expressionType)
+                                                               .methods();
                                                int expressionTbMethodsLength = expressionTbMethods.length;
                                                for (int i = 0; i < castTbMethodsLength; i++) {
                                                        for (int j = 0; j < expressionTbMethodsLength; j++) {
                                                                if (castTbMethods[i].selector == expressionTbMethods[j].selector) {
                                                                        if (castTbMethods[i].returnType != expressionTbMethods[j].returnType) {
-                                                                               if (castTbMethods[i].areParametersEqual(expressionTbMethods[j])) {
+                                                                               if (castTbMethods[i]
+                                                                                               .areParametersEqual(expressionTbMethods[j])) {
                                                                                        return false;
                                                                                }
                                                                        }
@@ -196,54 +201,65 @@ public class InstanceOfExpression extends OperatorExpression {
                                }
 
                                return false;
-                       } 
+                       }
 
                        return false;
                }
        }
+
        /**
         * Code generation for instanceOfExpression
-        *
-        * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
-        * @param codeStream org.eclipse.jdt.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);
-       }
-
+        * 
+        * @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.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);
+                               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);
@@ -251,4 +267,4 @@ public class InstanceOfExpression extends OperatorExpression {
                }
                visitor.endVisit(this, scope);
        }
-}
\ No newline at end of file
+}