From 1dd101f362d1316487983c87d9b119953e7906da Mon Sep 17 00:00:00 2001
From: Michael Nedzelsky <Michael.Nedzelsky@jetbrains.com>
Date: Tue, 9 Jun 2015 16:29:31 +0300
Subject: [PATCH] add KotlinJavaScriptAbiVersionIndex

---
 idea/src/META-INF/plugin.xml                  |  1 +
 .../KotlinJavaScriptAbiVersionIndex.kt        | 74 +++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 idea/src/org/jetbrains/kotlin/idea/versions/KotlinJavaScriptAbiVersionIndex.kt

diff --git a/idea/src/META-INF/plugin.xml b/idea/src/META-INF/plugin.xml
index ccca40e7c8d..e5c1ab7a2b7 100644
--- a/idea/src/META-INF/plugin.xml
+++ b/idea/src/META-INF/plugin.xml
@@ -477,6 +477,7 @@
     <psi.classFileDecompiler implementation="org.jetbrains.kotlin.idea.decompiler.KotlinJavaScriptMetaFileDecompiler"/>
     
     <fileBasedIndex implementation="org.jetbrains.kotlin.idea.versions.KotlinAbiVersionIndex"/>
+    <fileBasedIndex implementation="org.jetbrains.kotlin.idea.versions.KotlinJavaScriptAbiVersionIndex"/>
     <fileBasedIndex implementation="org.jetbrains.kotlin.idea.vfilefinder.KotlinClassFileIndex"/>
     <fileBasedIndex implementation="org.jetbrains.kotlin.idea.vfilefinder.KotlinJavaScriptMetaFileIndex"/>
 
diff --git a/idea/src/org/jetbrains/kotlin/idea/versions/KotlinJavaScriptAbiVersionIndex.kt b/idea/src/org/jetbrains/kotlin/idea/versions/KotlinJavaScriptAbiVersionIndex.kt
new file mode 100644
index 00000000000..79b132155a5
--- /dev/null
+++ b/idea/src/org/jetbrains/kotlin/idea/versions/KotlinJavaScriptAbiVersionIndex.kt
@@ -0,0 +1,74 @@
+/*
+ * 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.versions
+
+import com.google.common.collect.Maps
+import com.intellij.openapi.diagnostic.Logger
+import com.intellij.openapi.vfs.VfsUtilCore
+import com.intellij.util.indexing.*
+import com.intellij.util.io.ExternalIntegerKeyDescriptor
+import org.jetbrains.kotlin.js.JavaScript
+import org.jetbrains.kotlin.load.java.AbiVersionUtil
+import org.jetbrains.kotlin.utils.KotlinJavascriptMetadata
+import org.jetbrains.kotlin.utils.KotlinJavascriptMetadataUtils
+import java.util.ArrayList
+
+/**
+ * Important! This is not a stub-based index. And it has its own version
+ */
+public object KotlinJavaScriptAbiVersionIndex : ScalarIndexExtension<Int>() {
+
+    override fun getName() = ID.create<Int, Void>(javaClass<KotlinJavaScriptAbiVersionIndex>().getCanonicalName())
+
+    override fun getIndexer() = INDEXER
+
+    override fun getKeyDescriptor() = ExternalIntegerKeyDescriptor()
+
+    override fun getInputFilter() = FileBasedIndex.InputFilter() { file -> JavaScript.EXTENSION == file.getExtension() }
+
+    override fun dependsOnFileContent() = true
+
+    override fun getVersion() = VERSION
+
+    private val VERSION = 1
+
+    private val LOG = Logger.getInstance(javaClass<KotlinJavaScriptAbiVersionIndex>())
+
+    private val INDEXER = DataIndexer() { inputData: FileContent ->
+        val result = Maps.newHashMap<Int, Void>()
+
+        try {
+            val text = VfsUtilCore.loadText(inputData.getFile())
+            val metadataList = ArrayList<KotlinJavascriptMetadata>()
+            KotlinJavascriptMetadataUtils.parseMetadata(text, metadataList)
+            for (metadata in metadataList) {
+                if (KotlinJavascriptMetadataUtils.isAbiVersionCompatible(metadata.abiVersion)) {
+                    result.put(metadata.abiVersion, null)
+                }
+                else {
+                    // Version is set to something weird
+                    result.put(AbiVersionUtil.INVALID_VERSION, null)
+                }
+            }
+        }
+        catch (e: Throwable) {
+            LOG.warn("Could not index ABI version for file " + inputData.getFile() + ": " + e.getMessage())
+        }
+
+        result
+    }
+}