/*******************************************************************************
- * 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.impl.*;
-import net.sourceforge.phpdt.internal.compiler.flow.*;
-import net.sourceforge.phpdt.internal.compiler.codegen.*;
-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.BindingIds;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.InvocationSite;
+import net.sourceforge.phpdt.internal.compiler.lookup.MethodBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.ProblemMethodBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.ReferenceBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.SourceTypeBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
public class MessageSend extends Expression implements InvocationSite {
public Expression receiver ;
// must verify that exceptions potentially thrown by this expression are caught in the method
flowContext.checkExceptionHandlers(thrownExceptions, this, flowInfo, currentScope);
}
- // if invoking through an enclosing instance, then must perform the field generation -- only if reachable
- manageEnclosingInstanceAccessIfNecessary(currentScope);
manageSyntheticAccessIfNecessary(currentScope);
return flowInfo;
}
/**
* MessageSend code generation
*
- * @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;
-
- // generate receiver/enclosing instance access
- boolean isStatic = codegenBinding.isStatic();
- // outer access ?
- if (!isStatic && ((bits & DepthMASK) != 0) && (receiver == ThisReference.ThisImplicit)){
- // outer method can be reached through emulation if implicit access
- Object[] path = currentScope.getExactEmulationPath(currentScope.enclosingSourceType().enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT));
- if (path == null) {
- // emulation was not possible (should not happen per construction)
- currentScope.problemReporter().needImplementation();
- } else {
- codeStream.generateOuterAccess(path, this, currentScope);
- }
- } else {
- receiver.generateCode(currentScope, codeStream, !isStatic);
- }
- // generate arguments
- if (arguments != null){
- for (int i = 0, max = arguments.length; i < max; i++){
- arguments[i].generateCode(currentScope, codeStream, true);
- }
- }
- // actual message invocation
- if (syntheticAccessor == null){
- if (isStatic){
- codeStream.invokestatic(codegenBinding);
- } else {
- if( (receiver.isSuper()) || codegenBinding.isPrivate()){
- codeStream.invokespecial(codegenBinding);
- } else {
- if (codegenBinding.declaringClass.isInterface()){
- codeStream.invokeinterface(codegenBinding);
- } else {
- codeStream.invokevirtual(codegenBinding);
- }
- }
- }
- } else {
- codeStream.invokestatic(syntheticAccessor);
- }
- // operation on the returned value
- if (valueRequired){
- // implicit conversion if necessary
- codeStream.generateImplicitConversion(implicitConversion);
- } else {
- // pop return value if any
- switch(binding.returnType.id){
- case T_long :
- case T_double :
- codeStream.pop2();
- break;
- case T_void :
- break;
- default:
- codeStream.pop();
- }
- }
- codeStream.recordPositionsFrom(pc, (int)(this.nameSourcePosition >>> 32)); // highlight selector
-}
+//public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
+//
+// int pc = codeStream.position;
+//
+// // generate receiver/enclosing instance access
+// boolean isStatic = codegenBinding.isStatic();
+// // outer access ?
+// if (!isStatic && ((bits & DepthMASK) != 0) && receiver.isImplicitThis()){
+// // outer method can be reached through emulation if implicit access
+// ReferenceBinding targetType = currentScope.enclosingSourceType().enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
+// Object[] path = currentScope.getEmulationPath(targetType, true /*only exact match*/, false/*consider enclosing arg*/);
+// codeStream.generateOuterAccess(path, this, targetType, currentScope);
+// } else {
+// receiver.generateCode(currentScope, codeStream, !isStatic);
+// }
+// // generate arguments
+// if (arguments != null){
+// for (int i = 0, max = arguments.length; i < max; i++){
+// arguments[i].generateCode(currentScope, codeStream, true);
+// }
+// }
+// // actual message invocation
+// if (syntheticAccessor == null){
+// if (isStatic){
+// codeStream.invokestatic(codegenBinding);
+// } else {
+// if( (receiver.isSuper()) || codegenBinding.isPrivate()){
+// codeStream.invokespecial(codegenBinding);
+// } else {
+// if (codegenBinding.declaringClass.isInterface()){
+// codeStream.invokeinterface(codegenBinding);
+// } else {
+// codeStream.invokevirtual(codegenBinding);
+// }
+// }
+// }
+// } else {
+// codeStream.invokestatic(syntheticAccessor);
+// }
+// // operation on the returned value
+// if (valueRequired){
+// // implicit conversion if necessary
+// codeStream.generateImplicitConversion(implicitConversion);
+// } else {
+// // pop return value if any
+// switch(binding.returnType.id){
+// case T_long :
+// case T_double :
+// codeStream.pop2();
+// break;
+// case T_void :
+// break;
+// default:
+// codeStream.pop();
+// }
+// }
+// codeStream.recordPositionsFrom(pc, (int)(this.nameSourcePosition >>> 32)); // highlight selector
+//}
public boolean isSuperAccess() {
return receiver.isSuper();
}
public boolean isTypeAccess() {
return receiver != null && receiver.isTypeReference();
}
-public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope) {
- if (((bits & DepthMASK) != 0) && !binding.isStatic() && (receiver == ThisReference.ThisImplicit)) {
- ReferenceBinding compatibleType = currentScope.enclosingSourceType();
- // the declaringClass of the target binding must be compatible with the enclosing
- // type at <depth> levels outside
- for (int i = 0, depth = (bits & DepthMASK) >> DepthSHIFT; i < depth; i++) {
- compatibleType = compatibleType.enclosingType();
- }
- currentScope.emulateOuterAccess((SourceTypeBinding) compatibleType, false); // request cascade of accesses
- }
-}
public void manageSyntheticAccessIfNecessary(BlockScope currentScope){
if (binding.isPrivate()){
// depth is set for both implicit and explicit access (see MethodBinding#canBeSeenBy)
if (currentScope.enclosingSourceType() != binding.declaringClass){
- syntheticAccessor = ((SourceTypeBinding)binding.declaringClass).addSyntheticMethod(binding);
+ syntheticAccessor = ((SourceTypeBinding)binding.declaringClass).addSyntheticMethod(binding, isSuperAccess());
currentScope.problemReporter().needToEmulateMethodAccess(binding, this);
return;
}
// qualified super need emulation always
SourceTypeBinding destinationType = (SourceTypeBinding)(((QualifiedSuperReference)receiver).currentCompatibleType);
- syntheticAccessor = destinationType.addSyntheticMethod(binding);
+ syntheticAccessor = destinationType.addSyntheticMethod(binding, isSuperAccess());
currentScope.problemReporter().needToEmulateMethodAccess(binding, this);
return;
!= (enclosingSourceType = currentScope.enclosingSourceType()).getPackage()){
SourceTypeBinding currentCompatibleType = (SourceTypeBinding)enclosingSourceType.enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
- syntheticAccessor = currentCompatibleType.addSyntheticMethod(binding);
+ syntheticAccessor = currentCompatibleType.addSyntheticMethod(binding, isSuperAccess());
currentScope.problemReporter().needToEmulateMethodAccess(binding, this);
return;
}
}
// if the binding declaring class is not visible, need special action
// for runtime compatibility on 1.2 VMs : change the declaring class of the binding
- // NOTE: from 1.4 on, method's declaring class is touched if any different from receiver type
+ // NOTE: from target 1.2 on, method's declaring class is touched if any different from receiver type
// and not from Object or implicit static method call.
- if (binding.declaringClass != this.qualifyingType
- && !this.qualifyingType.isArrayType()
- && ((currentScope.environment().options.complianceLevel >= CompilerOptions.JDK1_4
- && (receiver != ThisReference.ThisImplicit || !binding.isStatic())
- && binding.declaringClass.id != T_Object) // no change for Object methods
- || !binding.declaringClass.canBeSeenBy(currentScope))) {
-
- this.codegenBinding = currentScope.enclosingSourceType().getUpdatedMethodBinding(binding, (ReferenceBinding) this.qualifyingType);
+// if (binding.declaringClass != this.qualifyingType
+// && !this.qualifyingType.isArrayType()
+// && ((currentScope.environment().options.targetJDK >= CompilerOptions.JDK1_2
+// && (!receiver.isImplicitThis() || !binding.isStatic())
+// && binding.declaringClass.id != T_Object) // no change for Object methods
+// || !binding.declaringClass.canBeSeenBy(currentScope))) {
+//
+// this.codegenBinding = currentScope.enclosingSourceType().getUpdatedMethodBinding(binding, (ReferenceBinding) this.qualifyingType);
+// }
+}
+public StringBuffer printExpression(int indent, StringBuffer output){
+
+ if (!receiver.isImplicitThis()) receiver.printExpression(0, output).append('.');
+ output.append(selector).append('(') ; //$NON-NLS-1$
+ if (arguments != null) {
+ for (int i = 0; i < arguments.length ; i ++) {
+ if (i > 0) output.append(", "); //$NON-NLS-1$
+ arguments[i].printExpression(0, output);
+ }
}
+ return output.append(')');
}
-
public TypeBinding resolveType(BlockScope scope) {
// Answer the signature return type
// Base type promotion
}
}
if (argHasError){
- MethodBinding closestMethod = null;
if(receiverType instanceof ReferenceBinding) {
// record any selector match, for clients who may still need hint about possible method match
this.codegenBinding = this.binding = scope.findMethod((ReferenceBinding)receiverType, selector, new TypeBinding[]{}, this);
}
this.codegenBinding = this.binding =
- receiver == ThisReference.ThisImplicit
+ receiver.isImplicitThis()
? scope.getImplicitMethod(selector, argumentTypes, this)
: scope.getMethod(this.receiverType, selector, argumentTypes, this);
if (!binding.isValidBinding()) {
if (binding.declaringClass == null) {
if (this.receiverType instanceof ReferenceBinding) {
binding.declaringClass = (ReferenceBinding) this.receiverType;
- } else { // really bad error ....
+ } else {
scope.problemReporter().errorNoMethodFor(this, this.receiverType, argumentTypes);
return null;
}
}
scope.problemReporter().invalidMethod(this, binding);
// record the closest match, for clients who may still need hint about possible method match
- if (binding.problemId() == ProblemReasons.NotFound){
- this.codegenBinding = this.binding = ((ProblemMethodBinding)binding).closestMatch;
+ if (binding instanceof ProblemMethodBinding){
+ MethodBinding closestMatch = ((ProblemMethodBinding)binding).closestMatch;
+ if (closestMatch != null) this.codegenBinding = this.binding = closestMatch;
}
- return null;
+ return binding == null ? null : binding.returnType;
}
if (!binding.isStatic()) {
- // the "receiver" must not be a type, i.e. a NameReference that the TC has bound to a Type
- if (receiver instanceof NameReference) {
- if ((((NameReference) receiver).bits & BindingIds.TYPE) != 0) {
- scope.problemReporter().mustUseAStaticMethod(this, binding);
- return null;
- }
+ // the "receiver" must not be a type, in other words, a NameReference that the TC has bound to a Type
+ if (receiver instanceof NameReference
+ && (((NameReference) receiver).bits & BindingIds.TYPE) != 0) {
+ scope.problemReporter().mustUseAStaticMethod(this, binding);
+ }
+ } else {
+ // static message invoked through receiver? legal but unoptimal (optional warning).
+ if (!(receiver.isImplicitThis()
+ || receiver.isSuper()
+ || (receiver instanceof NameReference
+ && (((NameReference) receiver).bits & BindingIds.TYPE) != 0))) {
+ scope.problemReporter().unnecessaryReceiverForStaticMethod(this, binding);
}
}
if (arguments != null)
if (binding.isAbstract()) {
if (receiver.isSuper()) {
scope.problemReporter().cannotDireclyInvokeAbstractMethod(this, binding);
- return null;
}
// abstract private methods cannot occur nor abstract static............
}
if (isMethodUseDeprecated(binding, scope))
scope.problemReporter().deprecatedMethod(binding, this);
- return binding.returnType;
+ return this.resolvedType = binding.returnType;
}
public void setActualReceiverType(ReferenceBinding receiverType) {
this.qualifyingType = receiverType;
}
public void setDepth(int depth) {
+ bits &= ~DepthMASK; // flush previous depth if any
if (depth > 0) {
- bits &= ~DepthMASK; // flush previous depth if any
bits |= (depth & 0xFF) << DepthSHIFT; // encoded on 8 bits
}
}
public String toStringExpression(){
String s = ""; //$NON-NLS-1$
- if (receiver != ThisReference.ThisImplicit)
+ if (!receiver.isImplicitThis())
s = s + receiver.toStringExpression()+"."; //$NON-NLS-1$
s = s + new String(selector) + "(" ; //$NON-NLS-1$
if (arguments != null)
return s;
}
-public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope blockScope) {
+public void traverse(ASTVisitor visitor, BlockScope blockScope) {
if (visitor.visit(this, blockScope)) {
receiver.traverse(visitor, blockScope);
if (arguments != null) {
git://git.phpeclipse.com / phpeclipse.git / blobdiff