+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v0.5
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v05.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.flow.FlowContext;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
-import net.sourceforge.phpdt.internal.compiler.impl.CompilerOptions;
-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.ProblemReasons;
-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 ;
- public char[] selector ;
- public Expression[] arguments ;
- public MethodBinding binding, codegenBinding;
-
- public long nameSourcePosition ; //(start<<32)+end
-
- MethodBinding syntheticAccessor;
-
- public TypeBinding receiverType, qualifyingType;
-
-public MessageSend() {
-
-}
-public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
-
- flowInfo = receiver.analyseCode(currentScope, flowContext, flowInfo, !binding.isStatic()).unconditionalInits();
- if (arguments != null) {
- int length = arguments.length;
- for (int i = 0; i < length; i++) {
- flowInfo = arguments[i].analyseCode(currentScope, flowContext, flowInfo).unconditionalInits();
- }
- }
- ReferenceBinding[] thrownExceptions;
- if ((thrownExceptions = binding.thrownExceptions) != NoExceptions) {
- // 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 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 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);
- currentScope.problemReporter().needToEmulateMethodAccess(binding, this);
- return;
- }
-
- } else if (receiver instanceof QualifiedSuperReference){ // qualified super
-
- // qualified super need emulation always
- SourceTypeBinding destinationType = (SourceTypeBinding)(((QualifiedSuperReference)receiver).currentCompatibleType);
- syntheticAccessor = destinationType.addSyntheticMethod(binding);
- currentScope.problemReporter().needToEmulateMethodAccess(binding, this);
- return;
-
- } else if (binding.isProtected()){
-
- SourceTypeBinding enclosingSourceType;
- if (((bits & DepthMASK) != 0)
- && binding.declaringClass.getPackage()
- != (enclosingSourceType = currentScope.enclosingSourceType()).getPackage()){
-
- SourceTypeBinding currentCompatibleType = (SourceTypeBinding)enclosingSourceType.enclosingTypeAt((bits & DepthMASK) >> DepthSHIFT);
- syntheticAccessor = currentCompatibleType.addSyntheticMethod(binding);
- 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
- // 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);
- }
-}
-
-public TypeBinding resolveType(BlockScope scope) {
- // Answer the signature return type
- // Base type promotion
-
- constant = NotAConstant;
- this.qualifyingType = this.receiverType = receiver.resolveType(scope);
-
- // will check for null after args are resolved
- TypeBinding[] argumentTypes = NoParameters;
- if (arguments != null) {
- boolean argHasError = false; // typeChecks all arguments
- int length = arguments.length;
- argumentTypes = new TypeBinding[length];
- for (int i = 0; i < length; i++){
- if ((argumentTypes[i] = arguments[i].resolveType(scope)) == null){
- argHasError = true;
- }
- }
- 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);
- }
- return null;
- }
- }
- if (this.receiverType == null)
- return null;
-
- // base type cannot receive any message
- if (this.receiverType.isBaseType()) {
- scope.problemReporter().errorNoMethodFor(this, this.receiverType, argumentTypes);
- return null;
- }
-
- this.codegenBinding = this.binding =
- receiver == ThisReference.ThisImplicit
- ? 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 ....
- 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;
- }
- return null;
- }
- 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;
- }
- }
- }
- if (arguments != null)
- for (int i = 0; i < arguments.length; i++)
- arguments[i].implicitWidening(binding.parameters[i], argumentTypes[i]);
-
- //-------message send that are known to fail at compile time-----------
- 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;
-}
-public void setActualReceiverType(ReferenceBinding receiverType) {
- this.qualifyingType = receiverType;
-}
-public void setDepth(int depth) {
- if (depth > 0) {
- bits &= ~DepthMASK; // flush previous depth if any
- bits |= (depth & 0xFF) << DepthSHIFT; // encoded on 8 bits
- }
-}
-public void setFieldIndex(int depth) {
- // ignore for here
-}
-
-public String toStringExpression(){
-
- String s = ""; //$NON-NLS-1$
- if (receiver != ThisReference.ThisImplicit)
- s = s + receiver.toStringExpression()+"."; //$NON-NLS-1$
- s = s + new String(selector) + "(" ; //$NON-NLS-1$
- if (arguments != null)
- for (int i = 0; i < arguments.length ; i ++)
- { s = s + arguments[i].toStringExpression();
- if ( i != arguments.length -1 ) s = s + " , " ;};; //$NON-NLS-1$
- s =s + ")" ; //$NON-NLS-1$
- return s;
-}
-
-public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope blockScope) {
- if (visitor.visit(this, blockScope)) {
- receiver.traverse(visitor, blockScope);
- if (arguments != null) {
- int argumentsLength = arguments.length;
- for (int i = 0; i < argumentsLength; i++)
- arguments[i].traverse(visitor, blockScope);
- }
- }
- visitor.endVisit(this, blockScope);
-}
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff