/*******************************************************************************
- * 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 {
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;
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;
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()) {
- // ----- (castTb.isInterface) expressionTb.isClass -------
- if (((ReferenceBinding) expressionTb).isFinal()) {
- //no subclass for expressionTb, thus compile-time check is valid
- if (scope.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 {
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 (scope.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;
}
}
}
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);
}
visitor.endVisit(this, scope);
}
-}
\ No newline at end of file
+}
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