001 /*
002 * Copyright 2010-2016 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017 package org.jetbrains.kotlin.asJava;
018
019 import com.intellij.lang.Language;
020 import com.intellij.openapi.util.TextRange;
021 import com.intellij.psi.*;
022 import com.intellij.psi.search.GlobalSearchScope;
023 import com.intellij.psi.search.SearchScope;
024 import com.intellij.util.ArrayUtil;
025 import com.intellij.util.IncorrectOperationException;
026 import org.jetbrains.annotations.NonNls;
027 import org.jetbrains.annotations.NotNull;
028 import org.jetbrains.annotations.Nullable;
029 import org.jetbrains.kotlin.idea.KotlinLanguage;
030 import org.jetbrains.kotlin.psi.*;
031 import org.jetbrains.kotlin.psi.psiUtil.KtPsiUtilKt;
032
033 import java.util.List;
034
035 public class KtLightParameter extends LightParameter implements KtLightDeclaration<KtParameter, PsiParameter> {
036 private static String getName(PsiParameter delegate, int index) {
037 String name = delegate.getName();
038 return name != null ? name : "p" + index;
039 }
040
041 private final PsiModifierList modifierList;
042 private final PsiParameter delegate;
043 private final int index;
044 private final KtLightMethod method;
045 private KtLightIdentifier lightIdentifier = null;
046
047 public KtLightParameter(final PsiParameter delegate, int index, KtLightMethod method) {
048 super(getName(delegate, index), delegate.getType(), method, KotlinLanguage.INSTANCE);
049
050 this.delegate = delegate;
051 this.index = index;
052 this.method = method;
053
054 if (method.getLightMethodOrigin() instanceof LightMemberOriginForDeclaration) {
055 this.modifierList = new KtLightModifierListWithExplicitModifiers(this, ArrayUtil.EMPTY_STRING_ARRAY) {
056 @Override
057 public PsiAnnotationOwner getDelegate() {
058 return delegate.getModifierList();
059 }
060 };
061 }
062 else {
063 this.modifierList = super.getModifierList();
064 }
065 }
066
067 @NotNull
068 @Override
069 public PsiModifierList getModifierList() {
070 return modifierList;
071 }
072
073 @NotNull
074 @Override
075 public PsiParameter getClsDelegate() {
076 return delegate;
077 }
078
079 @Nullable
080 @Override
081 public KtParameter getKotlinOrigin() {
082 KtDeclaration declaration = method.getKotlinOrigin();
083 if (declaration == null) return null;
084
085 int jetIndex = KtPsiUtilKt.isExtensionDeclaration(declaration) ? index - 1 : index;
086 if (jetIndex < 0) return null;
087
088 if (declaration instanceof KtFunction) {
089 List<KtParameter> paramList = ((KtFunction) declaration).getValueParameters();
090 return jetIndex < paramList.size() ? paramList.get(jetIndex) : null;
091 }
092
093 if (jetIndex != 0) return null;
094
095 KtPropertyAccessor setter = null;
096 if (declaration instanceof KtPropertyAccessor) {
097 KtPropertyAccessor accessor = (KtPropertyAccessor) declaration;
098 setter = accessor.isSetter() ? accessor : null;
099 }
100 else if (declaration instanceof KtProperty) {
101 setter = ((KtProperty) declaration).getSetter();
102 }
103
104 return setter != null ? setter.getParameter() : null;
105 }
106
107 @NotNull
108 @Override
109 public PsiElement getNavigationElement() {
110 KtParameter origin = getKotlinOrigin();
111 return origin != null ? origin : super.getNavigationElement();
112 }
113
114 @Override
115 public boolean isValid() {
116 return method.isValid();
117 }
118
119 @Override
120 public PsiElement setName(@NonNls @NotNull String name) throws IncorrectOperationException {
121 KtParameter origin = getKotlinOrigin();
122 if (origin != null) {
123 origin.setName(name);
124 }
125 return this;
126 }
127
128 @Override
129 public PsiFile getContainingFile() {
130 return method.getContainingFile();
131 }
132
133 @NotNull
134 @Override
135 public Language getLanguage() {
136 return KotlinLanguage.INSTANCE;
137 }
138
139 @NotNull
140 @Override
141 public SearchScope getUseScope() {
142 KtParameter origin = getKotlinOrigin();
143 return origin != null ? origin.getUseScope() : GlobalSearchScope.EMPTY_SCOPE;
144 }
145
146 public KtLightMethod getMethod() {
147 return method;
148 }
149
150 @Override
151 public String getText() {
152 return "";
153 }
154
155 @Override
156 public TextRange getTextRange() {
157 KtParameter origin = getKotlinOrigin();
158 return origin != null ? origin.getTextRange() : TextRange.EMPTY_RANGE;
159 }
160
161 @Override
162 public PsiIdentifier getNameIdentifier() {
163 if (lightIdentifier == null) {
164 lightIdentifier = new KtLightIdentifier(this, getKotlinOrigin());
165 }
166 return lightIdentifier;
167 }
168
169 @Override
170 public PsiElement getParent() {
171 return getMethod().getParameterList();
172 }
173
174 @Override
175 public boolean isEquivalentTo(PsiElement another) {
176 KtParameter kotlinOrigin = getKotlinOrigin();
177 if (another instanceof KtLightParameter && kotlinOrigin != null) {
178 KtLightParameter anotherParam = (KtLightParameter) another;
179 return kotlinOrigin.equals(anotherParam.getKotlinOrigin()) && getClsDelegate().equals(anotherParam.getClsDelegate());
180 }
181 return super.isEquivalentTo(another);
182 }
183 }