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/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.compiler.ast;
import org.eclipse.wst.jsdt.core.ast.IASTNode;
import org.eclipse.wst.jsdt.core.ast.IAllocationExpression;
import org.eclipse.wst.jsdt.core.ast.IExpression;
import org.eclipse.wst.jsdt.internal.compiler.ASTVisitor;
import org.eclipse.wst.jsdt.internal.compiler.flow.FlowContext;
import org.eclipse.wst.jsdt.internal.compiler.flow.FlowInfo;
import org.eclipse.wst.jsdt.internal.compiler.impl.Constant;
import org.eclipse.wst.jsdt.internal.compiler.lookup.Binding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.BlockScope;
import org.eclipse.wst.jsdt.internal.compiler.lookup.InvocationSite;
import org.eclipse.wst.jsdt.internal.compiler.lookup.LocalTypeBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.MethodBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.ProblemMethodBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.ProblemReasons;
import org.eclipse.wst.jsdt.internal.compiler.lookup.ProblemReferenceBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.ReferenceBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.TypeBinding;
import org.eclipse.wst.jsdt.internal.compiler.lookup.TypeConstants;
public class AllocationExpression extends Expression implements InvocationSite, IAllocationExpression {
public TypeReference type;
public Expression[] arguments;
public MethodBinding binding; // exact binding resulting from lookup
protected MethodBinding codegenBinding; // actual binding used for code generation (if no synthetic accessor)
public Expression member;
public boolean isShort;
public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
if (this.member!=null)
flowInfo =
this.member
.analyseCode(currentScope, flowContext, flowInfo)
.unconditionalInits();
// process arguments
if (arguments != null) {
for (int i = 0, count = arguments.length; i < count; i++) {
flowInfo =
arguments[i]
.analyseCode(currentScope, flowContext, flowInfo)
.unconditionalInits();
}
}
return flowInfo;
}
public Expression enclosingInstance() {
return null;
}
public boolean isSuperAccess() {
return false;
}
public boolean isTypeAccess() {
return true;
}
/* Inner emulation consists in either recording a dependency
* link only, or performing one level of propagation.
*
* Dependency mechanism is used whenever dealing with source target
* types, since by the time we reach them, we might not yet know their
* exact need.
*/
public void manageEnclosingInstanceAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) {
if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) != 0) return;
ReferenceBinding allocatedTypeErasure = binding.declaringClass;
// perform some emulation work in case there is some and we are inside a local type only
if (allocatedTypeErasure.isNestedType()
&& currentScope.enclosingSourceType().isLocalType()) {
if (allocatedTypeErasure.isLocalType()) {
((LocalTypeBinding) allocatedTypeErasure).addInnerEmulationDependent(currentScope, false);
// request cascade of accesses
}
}
}
public StringBuffer printExpression(int indent, StringBuffer output) {
output.append("new "); //$NON-NLS-1$
member.print(indent, output);
if (type != null) { // type null for enum constant initializations
type.printExpression(0, output);
}
if (!isShort)
{
output.append('(');
if (arguments != null) {
for (int i = 0; i < arguments.length; i++) {
if (i > 0) output.append(", "); //$NON-NLS-1$
arguments[i].printExpression(0, output);
}
}
output.append(')');
}
return output;
}
public TypeBinding resolveType(BlockScope scope) {
// Propagate the type checking to the arguments, and check if the constructor is defined.
constant = Constant.NotAConstant;
if (this.member!=null) {
this.resolvedType=this.member.resolveForAllocation(scope, this);
if (this.resolvedType!=null && !this.resolvedType.isValidBinding()) {
scope.problemReporter().invalidType(this, this.resolvedType);
}
}
else if (this.type == null) {
// initialization of an enum constant
this.resolvedType = scope.enclosingReceiverType();
}
else {
this.resolvedType = this.type.resolveType(scope, true /* check bounds*/);
}
// will check for null after args are resolved
// buffering the arguments' types
boolean argsContainCast = false;
TypeBinding[] argumentTypes = Binding.NO_PARAMETERS;
if (arguments != null) {
boolean argHasError = false;
int length = arguments.length;
argumentTypes = new TypeBinding[length];
for (int i = 0; i < length; i++) {
Expression argument = this.arguments[i];
if ((argumentTypes[i] = argument.resolveType(scope)) == null) {
argHasError = true;
argumentTypes[i]=TypeBinding.UNKNOWN;
}
}
if (argHasError) {
// if (this.resolvedType instanceof ReferenceBinding) {
// // record a best guess, for clients who need hint about possible contructor match
// TypeBinding[] pseudoArgs = new TypeBinding[length];
// for (int i = length; --i >= 0;)
// pseudoArgs[i] = argumentTypes[i] == null ? this.resolvedType : argumentTypes[i]; // replace args with errors with receiver
// this.binding = scope.findMethod((ReferenceBinding) this.resolvedType, TypeConstants.INIT, pseudoArgs, this);
// }
// return this.resolvedType;
}
}
if (this.resolvedType == null || this.resolvedType.isAnyType()|| this.resolvedType instanceof ProblemReferenceBinding)
{
this.binding= new ProblemMethodBinding(
TypeConstants.INIT,
Binding.NO_PARAMETERS,
ProblemReasons.NotFound);
this.resolvedType=TypeBinding.UNKNOWN;
return this.resolvedType;
}
if (!this.resolvedType.isValidBinding())
return null;
if (this.resolvedType instanceof ReferenceBinding )
{
ReferenceBinding allocationType = (ReferenceBinding) this.resolvedType;
if (!(binding = scope.getConstructor(allocationType, argumentTypes, this)).isValidBinding()) {
if (binding.declaringClass == null)
binding.declaringClass = allocationType;
scope.problemReporter().invalidConstructor(this, binding);
return this.resolvedType;
}
if (argumentTypes.length!=binding.parameters.length)
scope.problemReporter().wrongNumberOfArguments(this, binding);
if (isMethodUseDeprecated(binding, scope, true))
scope.problemReporter().deprecatedMethod(binding, this);
checkInvocationArguments(scope, null, allocationType, this.binding, this.arguments, argumentTypes, argsContainCast, this);
}
return this.resolvedType;
}
public void setActualReceiverType(ReferenceBinding receiverType) {
// ignored
}
public void setDepth(int i) {
// ignored
}
public void setFieldIndex(int i) {
// ignored
}
public void traverse(ASTVisitor visitor, BlockScope scope) {
if (visitor.visit(this, scope)) {
if (this.member!=null)
this.member.traverse(visitor, scope);
else if (this.type != null) { // enum constant scenario
this.type.traverse(visitor, scope);
}
if (this.arguments != null) {
for (int i = 0, argumentsLength = this.arguments.length; i < argumentsLength; i++)
this.arguments[i].traverse(visitor, scope);
}
}
visitor.endVisit(this, scope);
}
public int getASTType() {
return IASTNode.ALLOCATION_EXPRESSION;
}
public IExpression getMember() {
return this.member;
}
}
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