src/org/eclipse/jdt/internal/compiler/lookup/SignatureWrapper.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 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 org.eclipse.jdt.internal.compiler.lookup;
  12
  13 import org.eclipse.jdt.core.compiler.CharOperation;
  14
  15 public class SignatureWrapper {
  16         public char[] signature;
  17         public int start;
  18         public int end;
  19         public int bracket;
  20
  21         public SignatureWrapper(char[] signature) {
  22                 this.signature = signature;
  23                 this.start = 0;
  24                 this.end = this.bracket = -1;
  25         }
  26         public boolean atEnd() {
  27                 return this.start < 0 || this.start >= this.signature.length;
  28         }
  29         public int computeEnd() {
  30                 int index = this.start;
  31                 while (this.signature[index] == '[')
  32                         index++;
  33                 switch (this.signature[index]) {
  34                         case 'L' :
  35                         case 'T' :
  36                                 this.end = CharOperation.indexOf(';', this.signature, this.start);
  37                                 if (this.bracket <= this.start) // already know it if its > start
  38                                         this.bracket = CharOperation.indexOf('<', this.signature, this.start);
  39
  40                                 if (this.bracket > this.start && this.bracket < this.end)
  41                                         this.end = this.bracket;
  42                                 else if (this.end == -1)
  43                                         this.end = this.signature.length + 1;
  44                                 break;
  45                         default :
  46                                 this.end = this.start;
  47                 }
  48
  49                 this.start = this.end + 1; // skip ';'
  50                 return this.end;
  51         }
  52         public char[] nextWord() {
  53                 this.end = CharOperation.indexOf(';', this.signature, this.start);
  54                 if (this.bracket <= this.start) // already know it if its > start
  55                         this.bracket = CharOperation.indexOf('<', this.signature, this.start);
  56                 int dot = CharOperation.indexOf('.', this.signature, this.start);
  57
  58                 if (this.bracket > this.start && this.bracket < this.end)
  59                         this.end = this.bracket;
  60                 if (dot > this.start && dot < this.end)
  61                         this.end = dot;
  62
  63                 return CharOperation.subarray(this.signature, this.start, this.start = this.end); // skip word
  64         }
  65         public String toString() {
  66                 return new String(this.signature) + " @ " + this.start; //$NON-NLS-1$
  67         }
  68 }