case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/search/PatternStrings.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2008 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.search;
  12
  13 import org.eclipse.jdt.core.IField;
  14 import org.eclipse.jdt.core.IJavaElement;
  15 import org.eclipse.jdt.core.IMethod;
  16 import org.eclipse.jdt.core.IType;
  17 import org.eclipse.jdt.core.Signature;
  18
  19 import org.eclipse.jdt.ui.JavaElementLabels;
  20
  21 public class PatternStrings {
  22
  23         public static String getSignature(IJavaElement element) {
  24                 if (element == null)
  25                         return null;
  26                 else
  27                         switch (element.getElementType()) {
  28                                 case IJavaElement.METHOD:
  29                                         return getMethodSignature((IMethod)element);
  30                                 case IJavaElement.TYPE:
  31                                         return getTypeSignature((IType) element);
  32                                 case IJavaElement.FIELD:
  33                                         return getFieldSignature((IField) element);
  34                                 default:
  35                                         return element.getElementName();
  36                         }
  37         }
  38
  39         public static String getMethodSignature(IMethod method) {
  40                 StringBuffer buffer= new StringBuffer();
  41                 buffer.append(JavaElementLabels.getElementLabel(
  42                         method.getDeclaringType(),
  43                         JavaElementLabels.T_FULLY_QUALIFIED | JavaElementLabels.USE_RESOLVED));
  44                 boolean isConstructor= method.getElementName().equals(method.getDeclaringType().getElementName());
  45                 if (!isConstructor) {
  46                         buffer.append('.');
  47                 }
  48                 buffer.append(getUnqualifiedMethodSignature(method, !isConstructor));
  49
  50                 return buffer.toString();
  51         }
  52
  53         private static String getUnqualifiedMethodSignature(IMethod method, boolean includeName) {
  54                 StringBuffer buffer= new StringBuffer();
  55                 if (includeName) {
  56                         buffer.append(method.getElementName());
  57                 }
  58                 buffer.append('(');
  59
  60                 String[] types= method.getParameterTypes();
  61                 for (int i= 0; i < types.length; i++) {
  62                         if (i > 0)
  63                                 buffer.append(", "); //$NON-NLS-1$
  64                         String typeSig= Signature.toString(types[i]);
  65                         buffer.append(typeSig);
  66                 }
  67                 buffer.append(')');
  68
  69                 return buffer.toString();
  70         }
  71
  72         public static String getUnqualifiedMethodSignature(IMethod method) {
  73                 return getUnqualifiedMethodSignature(method, true);
  74         }
  75
  76         public static String getTypeSignature(IType field) {
  77                 return JavaElementLabels.getElementLabel(field,
  78                         JavaElementLabels.T_FULLY_QUALIFIED | JavaElementLabels.T_TYPE_PARAMETERS | JavaElementLabels.USE_RESOLVED);
  79         }
  80
  81         public static String getFieldSignature(IField field) {
  82                 return JavaElementLabels.getElementLabel(field, JavaElementLabels.F_FULLY_QUALIFIED);
  83         }
  84 }