| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * 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-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler.ast; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.internal.compiler.ASTVisitor; |
| import org.eclipse.jdt.internal.compiler.lookup.*; |
| |
| public class Argument extends LocalDeclaration { |
| |
| // prefix for setter method (to recognize special hiding argument) |
| private final static char[] SET = "set".toCharArray(); //$NON-NLS-1$ |
| public boolean isVarArgs; |
| |
| public Argument(char[] name, long posNom, TypeReference tr, int modifiers, boolean isVarArgs) { |
| |
| super(name, (int) (posNom >>> 32), (int) posNom); |
| this.declarationSourceEnd = (int) posNom; |
| this.modifiers = modifiers; |
| type = tr; |
| this.bits |= IsLocalDeclarationReachableMASK; |
| this.isVarArgs = isVarArgs; |
| } |
| |
| public void bind(MethodScope scope, TypeBinding typeBinding, boolean used) { |
| |
| if (this.type != null) |
| this.type.resolvedType = typeBinding; // TODO (philippe) no longer necessary as when binding got resolved, it was recorded already (SourceTypeBinding#resolveTypesFor(MethodBinding)) |
| // record the resolved type into the type reference |
| int modifierFlag = this.modifiers; |
| |
| Binding existingVariable = scope.getBinding(name, BindingIds.VARIABLE, this, false /*do not resolve hidden field*/); |
| if (existingVariable != null && existingVariable.isValidBinding()){ |
| if (existingVariable instanceof LocalVariableBinding && this.hiddenVariableDepth == 0) { |
| scope.problemReporter().redefineArgument(this); |
| return; |
| } |
| boolean isSpecialArgument = false; |
| if (existingVariable instanceof FieldBinding) { |
| if (scope.isInsideConstructor()) { |
| isSpecialArgument = true; // constructor argument |
| } else { |
| AbstractMethodDeclaration methodDecl = scope.referenceMethod(); |
| if (methodDecl != null && CharOperation.prefixEquals(SET, methodDecl.selector)) { |
| isSpecialArgument = true; // setter argument |
| } |
| } |
| } |
| scope.problemReporter().localVariableHiding(this, existingVariable, isSpecialArgument); |
| } |
| |
| scope.addLocalVariable( |
| this.binding = |
| new LocalVariableBinding(this, typeBinding, modifierFlag, true)); |
| //true stand for argument instead of just local |
| this.binding.declaration = this; |
| this.binding.useFlag = used ? LocalVariableBinding.USED : LocalVariableBinding.UNUSED; |
| } |
| |
| public StringBuffer print(int indent, StringBuffer output) { |
| |
| printIndent(indent, output); |
| printModifiers(this.modifiers, output); |
| if (type == null) { |
| output.append("<no type> "); //$NON-NLS-1$ |
| } else { |
| type.print(0, output).append(' '); |
| } |
| return output.append(this.name); |
| } |
| |
| public StringBuffer printStatement(int indent, StringBuffer output) { |
| |
| return print(indent, output).append(';'); |
| } |
| |
| public TypeBinding resolveForCatch(BlockScope scope) { |
| |
| // resolution on an argument of a catch clause |
| // provide the scope with a side effect : insertion of a LOCAL |
| // that represents the argument. The type must be from JavaThrowable |
| |
| TypeBinding exceptionType = this.type.resolveType(scope); |
| if (exceptionType == null) return null; |
| if (exceptionType.isGenericType() || exceptionType.isParameterizedType()) { |
| scope.problemReporter().invalidParameterizedExceptionType(exceptionType, this); |
| return null; |
| } |
| if (exceptionType.isTypeVariable()) { |
| scope.problemReporter().invalidTypeVariableAsException(exceptionType, this); |
| return null; |
| } |
| TypeBinding throwable = scope.getJavaLangThrowable(); |
| if (!exceptionType.isCompatibleWith(throwable)) { |
| scope.problemReporter().typeMismatchError(exceptionType, throwable, this); |
| return null; |
| } |
| |
| Binding existingVariable = scope.getBinding(name, BindingIds.VARIABLE, this, false /*do not resolve hidden field*/); |
| if (existingVariable != null && existingVariable.isValidBinding()){ |
| if (existingVariable instanceof LocalVariableBinding && this.hiddenVariableDepth == 0) { |
| scope.problemReporter().redefineArgument(this); |
| return null; |
| } |
| scope.problemReporter().localVariableHiding(this, existingVariable, false); |
| } |
| |
| binding = new LocalVariableBinding(this, exceptionType, modifiers, false); // argument decl, but local var (where isArgument = false) |
| scope.addLocalVariable(binding); |
| binding.setConstant(NotAConstant); |
| return exceptionType; |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| |
| if (visitor.visit(this, scope)) { |
| if (type != null) |
| type.traverse(visitor, scope); |
| if (initialization != null) |
| initialization.traverse(visitor, scope); |
| } |
| visitor.endVisit(this, scope); |
| } |
| } |