xml/dom-openapi/src/com/intellij/patterns/DomPatterns.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.xml.XmlAttribute;
  19 import com.intellij.psi.xml.XmlElement;
  20 import com.intellij.psi.xml.XmlTag;
  21 import com.intellij.util.ProcessingContext;
  22 import com.intellij.util.xml.DomElement;
  23 import com.intellij.util.xml.DomManager;
  24 import com.intellij.util.xml.DomTarget;
  25 import com.intellij.pom.PomTargetPsiElement;
  26 import org.jetbrains.annotations.NotNull;
  27
  28 /**
  29  * @author peter
  30  */
  31 public class DomPatterns {
  32
  33   public static <T extends DomElement> DomElementPattern.Capture<T> domElement(Class<T> aClass) {
  34     return new DomElementPattern.Capture<T>(aClass);
  35   }
  36
  37   public static DomElementPattern.Capture<DomElement> domElement() {
  38     return domElement(DomElement.class);
  39   }
  40
  41   public static GenericDomValuePattern<?> genericDomValue() {
  42     return new GenericDomValuePattern();
  43   }
  44
  45   public static <T> GenericDomValuePattern<T> genericDomValue(ElementPattern<?> valuePattern) {
  46     return ((GenericDomValuePattern)genericDomValue()).withValue(valuePattern);
  47   }
  48
  49   public static <T> GenericDomValuePattern<T> genericDomValue(Class<T> aClass) {
  50     return new GenericDomValuePattern<T>(aClass);
  51   }
  52
  53   public static XmlElementPattern.Capture withDom(final ElementPattern<? extends DomElement> pattern) {
  54     return new XmlElementPattern.Capture().with(new PatternCondition<XmlElement>("tagWithDom") {
  55       public boolean accepts(@NotNull final XmlElement xmlElement, final ProcessingContext context) {
  56         final DomManager manager = DomManager.getDomManager(xmlElement.getProject());
  57         if (xmlElement instanceof XmlAttribute) {
  58           return pattern.getCondition().accepts(manager.getDomElement((XmlAttribute)xmlElement), context);
  59         }
  60         return xmlElement instanceof XmlTag && pattern.getCondition().accepts(manager.getDomElement((XmlTag)xmlElement), context);
  61       }
  62     });
  63   }
  64
  65   public static XmlTagPattern.Capture tagWithDom(String tagName, Class<? extends DomElement> aClass) {
  66     return tagWithDom(tagName, domElement(aClass));
  67   }
  68
  69   public static XmlTagPattern.Capture tagWithDom(String tagName, ElementPattern<? extends DomElement> domPattern) {
  70     return XmlPatterns.xmlTag().withLocalName(tagName).and(withDom(domPattern));
  71   }
  72
  73   public static PsiElementPattern.Capture<PomTargetPsiElement> domTargetElement(final ElementPattern<? extends DomElement> pattern) {
  74     return PlatformPatterns.pomElement(withDomTarget(pattern));
  75   }
  76
  77   public static ElementPattern<DomTarget> withDomTarget(final ElementPattern<? extends DomElement> pattern) {
  78     return new ObjectPattern.Capture<DomTarget>(DomTarget.class).with(new PatternCondition<DomTarget>("withDomTarget") {
  79       @Override
  80       public boolean accepts(@NotNull final DomTarget target, final ProcessingContext context) {
  81         return pattern.accepts(target.getDomElement(), context);
  82       }
  83     });
  84   }
  85
  86
  87 }