| /******************************************************************************* |
| * Copyright (c) 2000, 2008 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.classfmt.ClassFileConstants; |
| 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.LocalVariableBinding; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.MethodBinding; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.NestedTypeBinding; |
| 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.ReferenceBinding; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.SourceTypeBinding; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.SyntheticArgumentBinding; |
| import org.eclipse.wst.jsdt.internal.compiler.lookup.TagBits; |
| 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) |
| MethodBinding syntheticAccessor; // synthetic accessor for inner-emulation |
| public TypeReference[] typeArguments; |
| public TypeBinding[] genericTypeArguments; |
| public FieldDeclaration enumConstant; // for enum constant initializations |
| public Expression member; |
| public boolean isShort; |
| |
| |
| public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) { |
| // check captured variables are initialized in current context (26134) |
| // checkCapturedLocalInitializationIfNecessary((ReferenceBinding)this.binding.declaringClass.erasure(), currentScope, 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(); |
| } |
| } |
| // record some dependency information for exception types |
| ReferenceBinding[] thrownExceptions; |
| if (((thrownExceptions = this.binding.thrownExceptions).length) != 0) { |
| // check exception handling |
| flowContext.checkExceptionHandlers( |
| thrownExceptions, |
| this, |
| flowInfo.unconditionalCopy(), |
| currentScope); |
| } |
| // manageEnclosingInstanceAccessIfNecessary(currentScope, flowInfo); |
| // manageSyntheticAccessIfNecessary(currentScope, flowInfo); |
| |
| return flowInfo; |
| } |
| |
| public void checkCapturedLocalInitializationIfNecessary(ReferenceBinding checkedType, BlockScope currentScope, FlowInfo flowInfo) { |
| if (checkedType.isLocalType() |
| && !checkedType.isAnonymousType() |
| && !currentScope.isDefinedInType(checkedType)) { // only check external allocations |
| NestedTypeBinding nestedType = (NestedTypeBinding) checkedType; |
| SyntheticArgumentBinding[] syntheticArguments = nestedType.syntheticOuterLocalVariables(); |
| if (syntheticArguments != null) |
| for (int i = 0, count = syntheticArguments.length; i < count; i++){ |
| SyntheticArgumentBinding syntheticArgument = syntheticArguments[i]; |
| LocalVariableBinding targetLocal; |
| if ((targetLocal = syntheticArgument.actualOuterLocalVariable) == null) continue; |
| if (targetLocal.declaration != null && !flowInfo.isDefinitelyAssigned(targetLocal)){ |
| currentScope.problemReporter().uninitializedLocalVariable(targetLocal, this); |
| } |
| } |
| } |
| } |
| |
| public Expression enclosingInstance() { |
| return null; |
| } |
| |
| /** |
| * @see org.eclipse.wst.jsdt.internal.compiler.lookup.InvocationSite#genericTypeArguments() |
| */ |
| public TypeBinding[] genericTypeArguments() { |
| return this.genericTypeArguments; |
| } |
| |
| 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 = (ReferenceBinding) binding.declaringClass.erasure(); |
| |
| // 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 |
| } else { |
| // locally propagate, since we already now the desired shape for sure |
| currentScope.propagateInnerEmulation(allocatedTypeErasure, false); |
| // request cascade of accesses |
| } |
| } |
| } |
| |
| public void manageSyntheticAccessIfNecessary(BlockScope currentScope, FlowInfo flowInfo) { |
| if ((flowInfo.tagBits & FlowInfo.UNREACHABLE) != 0) return; |
| // if constructor from parameterized type got found, use the original constructor at codegen time |
| this.codegenBinding = this.binding.original(); |
| |
| ReferenceBinding declaringClass; |
| if (this.codegenBinding.isPrivate() && currentScope.enclosingSourceType() != (declaringClass = this.codegenBinding.declaringClass)) { |
| |
| // from 1.4 on, local type constructor can lose their private flag to ease emulation |
| if ((declaringClass.tagBits & TagBits.IsLocalType) != 0 && currentScope.compilerOptions().complianceLevel >= ClassFileConstants.JDK1_4) { |
| // constructor will not be dumped as private, no emulation required thus |
| this.codegenBinding.tagBits |= TagBits.ClearPrivateModifier; |
| } else { |
| syntheticAccessor = ((SourceTypeBinding) declaringClass).addSyntheticMethod(this.codegenBinding, isSuperAccess()); |
| currentScope.problemReporter().needToEmulateMethodAccess(this.codegenBinding, this); |
| } |
| } |
| } |
| |
| public StringBuffer printExpression(int indent, StringBuffer output) { |
| // if (this.type != null) { // type null for enum constant initializations |
| output.append("new "); //$NON-NLS-1$ |
| member.print(indent, output); |
| // } |
| if (typeArguments != null) { |
| output.append('<'); |
| int max = typeArguments.length - 1; |
| for (int j = 0; j < max; j++) { |
| typeArguments[j].print(0, output); |
| output.append(", ");//$NON-NLS-1$ |
| } |
| typeArguments[max].print(0, output); |
| output.append('>'); |
| } |
| 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*/); |
| checkParameterizedAllocation: { |
| if (this.type instanceof ParameterizedQualifiedTypeReference) { // disallow new X<String>.Y<Integer>() |
| ReferenceBinding currentType = (ReferenceBinding)this.resolvedType; |
| if (currentType == null) return null; |
| do { |
| // isStatic() is answering true for toplevel types |
| if ((currentType.modifiers & ClassFileConstants.AccStatic) != 0) break checkParameterizedAllocation; |
| if (currentType.isRawType()) break checkParameterizedAllocation; |
| } while ((currentType = currentType.enclosingType())!= null); |
| ParameterizedQualifiedTypeReference qRef = (ParameterizedQualifiedTypeReference) this.type; |
| for (int i = qRef.typeArguments.length - 2; i >= 0; i--) { |
| if (qRef.typeArguments[i] != null) { |
| scope.problemReporter().illegalQualifiedParameterizedTypeAllocation(this.type, this.resolvedType); |
| break; |
| } |
| } |
| } |
| } |
| } |
| // will check for null after args are resolved |
| |
| // resolve type arguments (for generic constructor call) |
| if (this.typeArguments != null) { |
| int length = this.typeArguments.length; |
| boolean argHasError = false; // typeChecks all arguments |
| this.genericTypeArguments = new TypeBinding[length]; |
| for (int i = 0; i < length; i++) { |
| if ((this.genericTypeArguments[i] = this.typeArguments[i].resolveType(scope, true /* check bounds*/)) == null) { |
| argHasError = true; |
| } |
| } |
| if (argHasError) { |
| return null; |
| } |
| } |
| |
| // 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 (argument instanceof CastExpression) { |
| argument.bits |= DisableUnnecessaryCastCheck; // will check later on |
| argsContainCast = true; |
| } |
| 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.binding= new ProblemMethodBinding( |
| TypeConstants.INIT, |
| Binding.NO_PARAMETERS, |
| ProblemReasons.NotFound); |
| this.resolvedType=TypeBinding.UNKNOWN; |
| return this.resolvedType; |
| |
| } |
| |
| // null type denotes fake allocation for enum constant inits |
| if (this.type != null && !this.resolvedType.canBeInstantiated()) { |
| scope.problemReporter().cannotInstantiate(type, this.resolvedType); |
| 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.typeArguments != null) { |
| for (int i = 0, typeArgumentsLength = this.typeArguments.length; i < typeArgumentsLength; i++) { |
| this.typeArguments[i].traverse(visitor, 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; |
| } |
| } |
