java/openapi/src/com/intellij/patterns/PsiJavaElementPattern.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.patterns;
  17
  18 import com.intellij.psi.*;
  19 import com.intellij.util.ProcessingContext;
  20 import org.jetbrains.annotations.NonNls;
  21 import org.jetbrains.annotations.NotNull;
  22
  23 /**
  24  * @author peter
  25  */
  26 public class PsiJavaElementPattern<T extends PsiElement,Self extends PsiJavaElementPattern<T,Self>> extends PsiElementPattern<T,Self> {
  27   private static final @NonNls String VALUE = "value";
  28
  29   public PsiJavaElementPattern(final Class<T> aClass) {
  30     super(aClass);
  31   }
  32
  33   public PsiJavaElementPattern(@NotNull final InitialPatternCondition<T> condition) {
  34     super(condition);
  35   }
  36
  37   public Self annotationParam(@NonNls final String annotationQualifiedName, @NonNls final String parameterName) {
  38     return annotationParam(StandardPatterns.string().equalTo(annotationQualifiedName), parameterName);
  39   }
  40
  41   public Self annotationParam(@NonNls final String annotationQualifiedName) {
  42     return annotationParam(annotationQualifiedName, VALUE);
  43   }
  44
  45   public Self annotationParam(final ElementPattern<String> annotationQualifiedName, @NonNls final String parameterName) {
  46     return withParent(
  47       PsiJavaPatterns.psiNameValuePair().withName(parameterName).withParent(
  48         PlatformPatterns.psiElement(PsiAnnotationParameterList.class).withParent(
  49           PsiJavaPatterns.psiAnnotation().qName(annotationQualifiedName))));
  50   }
  51
  52   public Self insideAnnotationParam(final ElementPattern<String> annotationQualifiedName, @NonNls final String parameterName) {
  53     return inside(true,
  54       PsiJavaPatterns.psiNameValuePair().withName(parameterName).withParent(
  55         PlatformPatterns.psiElement(PsiAnnotationParameterList.class).withParent(
  56           PsiJavaPatterns.psiAnnotation().qName(annotationQualifiedName))));
  57   }
  58
  59   public Self insideAnnotationParam(final ElementPattern<String> annotationQualifiedName) {
  60     return insideAnnotationParam(annotationQualifiedName, VALUE);
  61   }
  62
  63   public Self nameIdentifierOf(final Class<? extends PsiMember> aClass) {
  64     return nameIdentifierOf(PsiJavaPatterns.instanceOf(aClass));
  65   }
  66
  67   public Self nameIdentifierOf(final ElementPattern<? extends PsiMember> pattern) {
  68     return with(new PatternCondition<T>("nameIdentifierOf") {
  69       public boolean accepts(@NotNull final T t, final ProcessingContext context) {
  70         if (!(t instanceof PsiIdentifier)) return false;
  71
  72         final PsiElement parent = t.getParent();
  73         if (parent instanceof PsiClass && t != ((PsiClass) parent).getNameIdentifier()) return false;
  74         if (parent instanceof PsiMethod && t != ((PsiMethod) parent).getNameIdentifier()) return false;
  75         if (parent instanceof PsiVariable && t != ((PsiVariable) parent).getNameIdentifier()) return false;
  76
  77         return pattern.getCondition().accepts(parent, context);
  78       }
  79     });
  80   }
  81
  82   public Self methodCallParameter(final int index, final ElementPattern<? extends PsiMethod> methodPattern) {
  83     return with(new PatternCondition<T>("methodCallParameter") {
  84       public boolean accepts(@NotNull final T literal, final ProcessingContext context) {
  85         final PsiElement parent = literal.getParent();
  86         if (parent instanceof PsiExpressionList) {
  87           final PsiExpressionList psiExpressionList = (PsiExpressionList)parent;
  88           final PsiExpression[] psiExpressions = psiExpressionList.getExpressions();
  89           if (!(psiExpressions.length > index && psiExpressions[index] == literal)) return false;
  90
  91           final PsiElement element = psiExpressionList.getParent();
  92           if (element instanceof PsiMethodCallExpression) {
  93             final JavaResolveResult[] results = ((PsiMethodCallExpression)element).getMethodExpression().multiResolve(false);
  94             for (JavaResolveResult result : results) {
  95               final PsiElement psiElement = result.getElement();
  96               if (methodPattern.getCondition().accepts(psiElement, context)) {
  97                 return true;
  98               }
  99             }
 100           }
 101         }
 102         return false;
 103       }
 104     });
 105   }
 106
 107   public static class Capture<T extends PsiElement> extends PsiJavaElementPattern<T, Capture<T>> {
 108     public Capture(final Class<T> aClass) {
 109       super(aClass);
 110     }
 111
 112     public Capture(@NotNull final InitialPatternCondition<T> condition) {
 113       super(condition);
 114     }
 115   }
 116
 117
 118
 119 }