net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Argument.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.compiler.ast;
  12
  13 import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
  14 import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
  15 import net.sourceforge.phpdt.internal.compiler.lookup.LocalVariableBinding;
  16 import net.sourceforge.phpdt.internal.compiler.lookup.MethodScope;
  17 import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
  18
  19 public class Argument extends LocalDeclaration {
  20
  21         public Argument(char[] name, long posNom, TypeReference tr, int modifiers) {
  22
  23                 super(null, name, (int) (posNom >>> 32), (int) posNom);
  24                 this.declarationSourceEnd = (int) posNom;
  25                 this.modifiers = modifiers;
  26                 type = tr;
  27                 this.bits |= IsLocalDeclarationReachableMASK;
  28         }
  29
  30         public void bind(MethodScope scope, TypeBinding typeBinding, boolean used) {
  31
  32                 if (this.type != null)
  33                         this.type.resolvedType = typeBinding;
  34                 // record the resolved type into the type reference
  35                 int modifierFlag = this.modifiers;
  36                 if ((this.binding = scope.duplicateName(this.name)) != null) {
  37                         //the name already exist....may carry on with the first binding ....
  38                         scope.problemReporter().redefineArgument(this);
  39                 } else {
  40                         scope.addLocalVariable(
  41                                 this.binding =
  42                                         new LocalVariableBinding(this, typeBinding, modifierFlag, true));
  43                         //true stand for argument instead of just local
  44                         if (typeBinding != null && isTypeUseDeprecated(typeBinding, scope))
  45                                 scope.problemReporter().deprecatedType(typeBinding, this.type);
  46                         this.binding.declaration = this;
  47                         this.binding.useFlag = used ? LocalVariableBinding.USED : LocalVariableBinding.UNUSED;
  48                 }
  49         }
  50
  51         public TypeBinding resolveForCatch(BlockScope scope) {
  52
  53                 // resolution on an argument of a catch clause
  54                 // provide the scope with a side effect : insertion of a LOCAL
  55                 // that represents the argument. The type must be from JavaThrowable
  56
  57                 TypeBinding tb = type.resolveTypeExpecting(scope, scope.getJavaLangThrowable());
  58                 if (tb == null)
  59                         return null;
  60                 if ((binding = scope.duplicateName(name)) != null) {
  61                         // the name already exists....may carry on with the first binding ....
  62                         scope.problemReporter().redefineArgument(this);
  63                         return null;
  64                 }
  65                 binding = new LocalVariableBinding(this, tb, modifiers, false); // argument decl, but local var  (where isArgument = false)
  66                 scope.addLocalVariable(binding);
  67                 binding.constant = NotAConstant;
  68                 return tb;
  69         }
  70
  71         public String toString(int tab) {
  72
  73                 String s = ""; //$NON-NLS-1$
  74                 if (modifiers != AccDefault) {
  75                         s += modifiersString(modifiers);
  76                 }
  77                 if (type == null) {
  78                         s += "<no type> "; //$NON-NLS-1$
  79                 } else {
  80                         s += type.toString(tab) + " "; //$NON-NLS-1$
  81                 }
  82                 s += new String(name);
  83                 return s;
  84         }
  85
  86         public void traverse(ASTVisitor visitor, BlockScope scope) {
  87
  88                 if (visitor.visit(this, scope)) {
  89                         if (type != null)
  90                                 type.traverse(visitor, scope);
  91                         if (initialization != null)
  92                                 initialization.traverse(visitor, scope);
  93                 }
  94                 visitor.endVisit(this, scope);
  95         }
  96 }