From 6df469b66f4575df8ec3d1bd12a4ab1e79d41394 Mon Sep 17 00:00:00 2001
From: Nikolay Krasko <nikolay.krasko@jetbrains.com>
Date: Fri, 18 Oct 2013 16:17:52 +0400
Subject: [PATCH] KT-4058 Don't check Java annotation in modules with no Kotlin
 runtime configured

 #KT-4058 Fixed
---
 .../KotlinSignatureInJavaMarkerProvider.java  | 12 ++++++++
 .../plugin/project/ProjectStructureUtil.java  | 30 +++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java b/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java
index 528f624ab37..a9880956bec 100644
--- a/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java
+++ b/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java
@@ -26,6 +26,8 @@ import com.intellij.ide.util.PropertiesComponent;
 import com.intellij.openapi.actionSystem.ActionGroup;
 import com.intellij.openapi.actionSystem.DefaultActionGroup;
 import com.intellij.openapi.editor.markup.GutterIconRenderer;
+import com.intellij.openapi.module.Module;
+import com.intellij.openapi.module.ModuleUtilCore;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.psi.*;
@@ -49,6 +51,7 @@ import org.jetbrains.jet.lang.resolve.scopes.JetScope;
 import org.jetbrains.jet.plugin.JetIcons;
 import org.jetbrains.jet.plugin.caches.resolve.KotlinCacheManager;
 import org.jetbrains.jet.plugin.caches.resolve.KotlinDeclarationsCache;
+import org.jetbrains.jet.plugin.project.ProjectStructureUtil;
 import org.jetbrains.jet.plugin.project.TargetPlatform;
 
 import java.awt.event.MouseEvent;
@@ -86,6 +89,15 @@ public class KotlinSignatureInJavaMarkerProvider implements LineMarkerProvider {
             return;
         }
 
+        Module module = ModuleUtilCore.findModuleForPsiElement(elements.get(0));
+        if (module == null) {
+            return;
+        }
+
+        if (!ProjectStructureUtil.isUsedInKotlinJavaModule(module)) {
+            return;
+        }
+
         BindingTrace trace = createDelegatingTrace(project);
         InjectorForJavaDescriptorResolver injector = new InjectorForJavaDescriptorResolver(project, trace);
 
diff --git a/idea/src/org/jetbrains/jet/plugin/project/ProjectStructureUtil.java b/idea/src/org/jetbrains/jet/plugin/project/ProjectStructureUtil.java
index 33a716ef3e0..01325ab3fcf 100644
--- a/idea/src/org/jetbrains/jet/plugin/project/ProjectStructureUtil.java
+++ b/idea/src/org/jetbrains/jet/plugin/project/ProjectStructureUtil.java
@@ -47,11 +47,13 @@ import org.jetbrains.jet.plugin.framework.LibraryPresentationProviderUtil;
 import org.jetbrains.jet.plugin.versions.KotlinRuntimeLibraryUtil;
 
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
 public class ProjectStructureUtil {
     private static final Key<CachedValue<Boolean>> IS_KOTLIN_JS_MODULE = Key.create("IS_KOTLIN_JS_MODULE");
+    private static final Key<CachedValue<Boolean>> IS_DEPEND_ON_JVM_KOTLIN = Key.create("KOTLIN_IS_DEPEND_ON_JVM_KOTLIN");
 
     private ProjectStructureUtil() {
     }
@@ -84,6 +86,34 @@ public class ProjectStructureUtil {
         return result.getValue();
     }
 
+    public static boolean isUsedInKotlinJavaModule(@NotNull final Module module) {
+        CachedValue<Boolean> result = module.getUserData(IS_DEPEND_ON_JVM_KOTLIN);
+        if (result == null) {
+            result = CachedValuesManager.getManager(module.getProject()).createCachedValue(new CachedValueProvider<Boolean>() {
+                @Override
+                public Result<Boolean> compute() {
+                    boolean usedInKotlinModule = false;
+
+                    Set<Module> dependentModules = new HashSet<Module>();
+                    ModuleUtilCore.collectModulesDependsOn(module, dependentModules);
+
+                    for (Module module : dependentModules) {
+                        if (isJavaKotlinModule(module)) {
+                            usedInKotlinModule = true;
+                            break;
+                        }
+                    }
+
+                    return Result.create(usedInKotlinModule, ProjectRootModificationTracker.getInstance(module.getProject()));
+                }
+            }, false);
+
+            module.putUserData(IS_DEPEND_ON_JVM_KOTLIN, result);
+        }
+
+        return result.getValue();
+    }
+
     @NotNull
     public static List<String> getLibLocationForProject(@NotNull Project project) {
         Module[] modules = ModuleManager.getInstance(project).getModules();