001    /*
002     * Copyright 2010-2013 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.jet.lang.psi;
018    
019    import com.intellij.extapi.psi.PsiFileBase;
020    import com.intellij.lang.ASTNode;
021    import com.intellij.lang.FileASTNode;
022    import com.intellij.openapi.fileTypes.FileType;
023    import com.intellij.psi.FileViewProvider;
024    import com.intellij.psi.PsiClass;
025    import com.intellij.psi.PsiClassOwner;
026    import com.intellij.psi.PsiElementVisitor;
027    import com.intellij.psi.util.PsiTreeUtil;
028    import com.intellij.util.IncorrectOperationException;
029    import org.jetbrains.annotations.NotNull;
030    import org.jetbrains.annotations.Nullable;
031    import org.jetbrains.jet.JetNodeTypes;
032    import org.jetbrains.jet.lang.psi.stubs.PsiJetFileStub;
033    import org.jetbrains.jet.plugin.JetFileType;
034    import org.jetbrains.jet.plugin.JetLanguage;
035    
036    import java.util.Collections;
037    import java.util.List;
038    
039    public class JetFile extends PsiFileBase implements JetDeclarationContainer, JetElement, PsiClassOwner {
040    
041        private final boolean isCompiled;
042    
043        public JetFile(FileViewProvider viewProvider, boolean compiled) {
044            super(viewProvider, JetLanguage.INSTANCE);
045            this.isCompiled = compiled;
046        }
047    
048        @Override
049        public FileASTNode getNode() {
050            return super.getNode();
051        }
052    
053        public boolean isCompiled() {
054            return isCompiled;
055        }
056    
057        @Override
058        @NotNull
059        public FileType getFileType() {
060            return JetFileType.INSTANCE;
061        }
062    
063        @Override
064        public String toString() {
065            return "JetFile: " + getName();
066        }
067    
068        @NotNull
069        @Override
070        public List<JetDeclaration> getDeclarations() {
071            return PsiTreeUtil.getChildrenOfTypeAsList(this, JetDeclaration.class);
072        }
073    
074        @Nullable
075        public JetImportList getImportList() {
076            return findChildByClass(JetImportList.class);
077        }
078    
079        @NotNull
080        public List<JetImportDirective> getImportDirectives() {
081            JetImportList importList = getImportList();
082            return importList != null ? importList.getImports() : Collections.<JetImportDirective>emptyList();
083        }
084    
085        @Nullable
086        public JetImportDirective findImportByAlias(@NotNull String name) {
087            for (JetImportDirective directive : getImportDirectives()) {
088                if (name.equals(directive.getAliasName())) {
089                    return directive;
090                }
091            }
092            return null;
093        }
094    
095        // scripts have no package directive
096        @Nullable
097        public JetPackageDirective getPackageDirective() {
098            ASTNode ast = getNode().findChildByType(JetNodeTypes.PACKAGE_DIRECTIVE);
099            return ast != null ? (JetPackageDirective) ast.getPsi() : null;
100        }
101    
102        @Override
103        @Nullable
104        public String getPackageName() {
105            PsiJetFileStub stub = (PsiJetFileStub) getStub();
106            if (stub != null) {
107                return stub.getPackageName();
108            }
109    
110            JetPackageDirective directive = getPackageDirective();
111            return directive != null ? directive.getQualifiedName() : null;
112        }
113    
114        @NotNull
115        @Override
116        public PsiClass[] getClasses() {
117            return PsiClass.EMPTY_ARRAY;
118        }
119    
120        @Override
121        public void setPackageName(String packageName) { }
122    
123        @Nullable
124        public JetScript getScript() {
125            return PsiTreeUtil.getChildOfType(this, JetScript.class);
126        }
127    
128        public boolean isScript() {
129            PsiJetFileStub stub = (PsiJetFileStub) getStub();
130            if (stub != null) {
131                return stub.isScript();
132            }
133    
134            return getScript() != null;
135        }
136    
137        @NotNull
138        @Override
139        public String getName() {
140            return super.getName(); // TODO
141        }
142    
143        @Override
144        public void accept(@NotNull PsiElementVisitor visitor) {
145            if (visitor instanceof JetVisitor) {
146                accept((JetVisitor) visitor, null);
147            }
148            else {
149                visitor.visitFile(this);
150            }
151        }
152    
153        @Override
154        public <D> void acceptChildren(@NotNull JetTreeVisitor<D> visitor, D data) {
155            JetPsiUtil.visitChildren(this, visitor, data);
156        }
157    
158        @Override
159        public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
160            return visitor.visitJetFile(this, data);
161        }
162    }