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

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v0.5
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v05.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.IAbstractSyntaxTreeVisitor;
  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.modifiers = modifiers;
  25                 type = tr;
  26                 this.bits |= IsLocalDeclarationReachableMASK;
  27         }
  28
  29         public void bind(MethodScope scope, TypeBinding typeBinding, boolean used) {
  30
  31                 if (this.type != null)
  32                         this.type.binding = typeBinding;
  33                 // record the resolved type into the type reference
  34                 int modifierFlag = this.modifiers;
  35                 if ((this.binding = scope.duplicateName(this.name)) != null) {
  36                         //the name already exist....may carry on with the first binding ....
  37                         scope.problemReporter().redefineArgument(this);
  38                 } else {
  39                         scope.addLocalVariable(
  40                                 this.binding =
  41                                         new LocalVariableBinding(this, typeBinding, modifierFlag, true));
  42                         //true stand for argument instead of just local
  43                         if (typeBinding != null && isTypeUseDeprecated(typeBinding, scope))
  44                                 scope.problemReporter().deprecatedType(typeBinding, this.type);
  45                         this.binding.declaration = this;
  46                         this.binding.used = used;
  47                 }
  48         }
  49
  50         public TypeBinding resolveForCatch(BlockScope scope) {
  51
  52                 // resolution on an argument of a catch clause
  53                 // provide the scope with a side effect : insertion of a LOCAL
  54                 // that represents the argument. The type must be from JavaThrowable
  55
  56                 TypeBinding tb = type.resolveTypeExpecting(scope, scope.getJavaLangThrowable());
  57                 if (tb == null)
  58                         return null;
  59                 if ((binding = scope.duplicateName(name)) != null) {
  60                         // the name already exists....may carry on with the first binding ....
  61                         scope.problemReporter().redefineArgument(this);
  62                         return null;
  63                 }
  64                 binding = new LocalVariableBinding(this, tb, modifiers, false); // argument decl, but local var  (i.e. isArgument = false)
  65                 scope.addLocalVariable(binding);
  66                 binding.constant = NotAConstant;
  67                 return tb;
  68         }
  69
  70         public String toString(int tab) {
  71
  72                 String s = ""; //$NON-NLS-1$
  73                 if (modifiers != AccDefault) {
  74                         s += modifiersString(modifiers);
  75                 }
  76                 if (type == null) {
  77                         s += "<no type> "; //$NON-NLS-1$
  78                 } else {
  79                         s += type.toString(tab) + " "; //$NON-NLS-1$
  80                 }
  81                 s += new String(name);
  82                 return s;
  83         }
  84
  85         public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
  86
  87                 if (visitor.visit(this, scope)) {
  88                         if (type != null)
  89                                 type.traverse(visitor, scope);
  90                         if (initialization != null)
  91                                 initialization.traverse(visitor, scope);
  92                 }
  93                 visitor.endVisit(this, scope);
  94         }
  95 }