add KotlinJavascriptMetaFileDecompiler and support for .meta files

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/JetClsFile.kt

@@ -16,45 +16,12 @@
 
 package org.jetbrains.kotlin.idea.decompiler
 
-import com.intellij.openapi.util.TextRange
-import com.intellij.psi.util.PsiTreeUtil
-import org.jetbrains.annotations.TestOnly
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
-import org.jetbrains.kotlin.psi.JetDeclaration
 import org.jetbrains.kotlin.idea.decompiler.textBuilder.buildDecompiledText
-import org.jetbrains.kotlin.idea.decompiler.textBuilder.descriptorToKey
+import org.jetbrains.kotlin.idea.decompiler.textBuilder.DecompiledText
 import org.jetbrains.kotlin.utils.concurrent.block.LockedClearableLazyValue
-import org.jetbrains.kotlin.psi.JetFile
 
-public class JetClsFile(val provider: JetClassFileViewProvider) : JetFile(provider, true) {
-    private val decompiledText = LockedClearableLazyValue(Any()) {
+public class JetClsFile(val provider: JetClassFileViewProvider) : KotlinClsFileBase(provider) {
+    protected override val decompiledText: LockedClearableLazyValue<DecompiledText> = LockedClearableLazyValue(Any()) {
         buildDecompiledText(getVirtualFile())
     }
-
-    public fun getDeclarationForDescriptor(descriptor: DeclarationDescriptor): JetDeclaration? {
-        val key = descriptorToKey(descriptor.getOriginal())
-
-        val range = decompiledText.get().renderedDescriptorsToRange[key]
-        return if (range != null) {
-            PsiTreeUtil.findElementOfClassAtRange(this, range.getStartOffset(), range.getEndOffset(), javaClass<JetDeclaration>())
-        }
-        else {
-            null
-        }
-    }
-
-    override fun getText(): String? {
-        return decompiledText.get().text
-    }
-
-    override fun onContentReload() {
-        super.onContentReload()
-
-        decompiledText.drop()
-    }
-
-    TestOnly
-    fun getRenderedDescriptorsToRange(): Map<String, TextRange> {
-        return decompiledText.get().renderedDescriptorsToRange
-    }
 }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/KotlinClsFileBase.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.decompiler
+
+import com.intellij.openapi.util.TextRange
+import com.intellij.psi.FileViewProvider
+import com.intellij.psi.util.PsiTreeUtil
+import org.jetbrains.annotations.TestOnly
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.idea.decompiler.textBuilder.DecompiledText
+import org.jetbrains.kotlin.psi.JetDeclaration
+import org.jetbrains.kotlin.idea.decompiler.textBuilder.descriptorToKey
+import org.jetbrains.kotlin.utils.concurrent.block.LockedClearableLazyValue
+import org.jetbrains.kotlin.psi.JetFile
+
+public abstract class KotlinClsFileBase(provider: FileViewProvider) : JetFile(provider, true) {
+    protected abstract val decompiledText: LockedClearableLazyValue<DecompiledText>
+
+    public fun getDeclarationForDescriptor(descriptor: DeclarationDescriptor): JetDeclaration? {
+        val key = descriptorToKey(descriptor.getOriginal())
+
+        val range = decompiledText.get().renderedDescriptorsToRange[key]
+        return if (range != null) {
+            PsiTreeUtil.findElementOfClassAtRange(this, range.getStartOffset(), range.getEndOffset(), javaClass<JetDeclaration>())
+        }
+        else {
+            null
+        }
+    }
+
+    override fun getText(): String? {
+        return decompiledText.get().text
+    }
+
+    override fun onContentReload() {
+        super.onContentReload()
+
+        decompiledText.drop()
+    }
+
+    TestOnly
+    fun getRenderedDescriptorsToRange(): Map<String, TextRange> {
+        return decompiledText.get().renderedDescriptorsToRange
+    }
+}

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/KotlinJavascriptMetaFile.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.decompiler
+
+import org.jetbrains.kotlin.idea.decompiler.textBuilder.buildDecompiledTextFromJsMetadata
+import org.jetbrains.kotlin.idea.decompiler.textBuilder.DecompiledText
+import org.jetbrains.kotlin.utils.concurrent.block.LockedClearableLazyValue
+
+public class KotlinJavascriptMetaFile(val provider: KotlinJavascriptMetaFileViewProvider) : KotlinClsFileBase(provider) {
+    protected override val decompiledText: LockedClearableLazyValue<DecompiledText> = LockedClearableLazyValue(Any()) {
+        buildDecompiledTextFromJsMetadata(getVirtualFile())
+    }
+}

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/KotlinJavascriptMetaFileDecompiler.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.decompiler;
+
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.psi.FileViewProvider;
+import com.intellij.psi.PsiManager;
+import com.intellij.psi.compiled.ClassFileDecompilers;
+import com.intellij.psi.compiled.ClsStubBuilder;
+import com.intellij.psi.stubs.PsiFileStub;
+import com.intellij.util.indexing.FileContent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.idea.decompiler.stubBuilder.KotlinClsStubBuilder;
+
+public class KotlinJavascriptMetaFileDecompiler extends ClassFileDecompilers.Full {
+    private final ClsStubBuilder stubBuilder = new KotlinClsStubBuilder() {
+        @Nullable
+        @Override
+        public PsiFileStub<?> buildFileStub(@NotNull FileContent fileContent) {
+            return null;
+        }
+    };
+
+    @Override
+    public boolean accepts(@NotNull VirtualFile file) {
+        return file.getName().endsWith(".meta");
+    }
+
+    @NotNull
+    @Override
+    public ClsStubBuilder getStubBuilder() {
+        return stubBuilder;
+    }
+
+    @NotNull
+    @Override
+    public FileViewProvider createFileViewProvider(@NotNull VirtualFile file, @NotNull PsiManager manager, boolean physical) {
+        return new KotlinJavascriptMetaFileViewProvider(manager, file, physical, DecompilerPackage.isKotlinInternalCompiledFile(file));
+    }
+}

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/KotlinJavascriptMetaFileViewProvider.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.decompiler
+
+import com.intellij.openapi.fileTypes.FileType
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.psi.PsiFile
+import com.intellij.psi.PsiManager
+import com.intellij.psi.SingleRootFileViewProvider
+import org.jetbrains.kotlin.idea.JetLanguage
+import kotlin.properties.Delegates
+
+public class KotlinJavascriptMetaFileViewProvider (
+        manager: PsiManager,
+        val file: VirtualFile,
+        physical: Boolean,
+        val isInternal: Boolean) : SingleRootFileViewProvider(manager, file, physical, JetLanguage.INSTANCE) {
+
+    val jetJsMetaFile by Delegates.blockingLazy(this) {
+        //TODO: check index that file is library file, as in ClassFileViewProvider
+        if (!isInternal) KotlinJavascriptMetaFile(this) else null
+    }
+
+    override fun getContents(): CharSequence {
+        return jetJsMetaFile?.getText() ?: ""
+    }
+
+    override fun createFile(project: Project, file: VirtualFile, fileType: FileType): PsiFile? = jetJsMetaFile
+
+    override fun createCopy(copy: VirtualFile): SingleRootFileViewProvider {
+        return KotlinJavascriptMetaFileViewProvider(getManager(), copy, false, isInternal)
+    }
+}

idea/src/META-INF/plugin.xml

@@ -432,6 +432,7 @@
     <stubIndex implementation="org.jetbrains.kotlin.idea.stubindex.JetProbablyNothingPropertyShortNameIndex"/>
 
     <psi.classFileDecompiler implementation="org.jetbrains.kotlin.idea.decompiler.JetClassFileDecompiler"/>
+    <psi.classFileDecompiler implementation="org.jetbrains.kotlin.idea.decompiler.KotlinJavascriptMetaFileDecompiler"/>
     
     <fileBasedIndex implementation="org.jetbrains.kotlin.idea.versions.KotlinAbiVersionIndex"/>
     <fileBasedIndex implementation="org.jetbrains.kotlin.idea.vfilefinder.KotlinClassFileIndex"/>