From dd1dc67cfbd3f80eadd60e8b83f04257198003f1 Mon Sep 17 00:00:00 2001
From: Andrey Breslav <andrey.breslav@jetbrains.com>
Date: Fri, 18 Oct 2013 12:22:50 +0400
Subject: [PATCH] Do not fail on bad Kotlin configuration if there are no
 Kotlin files

Original commit: 61270e8ee569cd691ed1e3eaf1770c44b107f6a3
---
 .../jet/jps/build/KotlinBuilder.java          | 26 +++++++++++++++----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/jps/jps-plugin/src/org/jetbrains/jet/jps/build/KotlinBuilder.java b/jps/jps-plugin/src/org/jetbrains/jet/jps/build/KotlinBuilder.java
index 5c47f983ee1..d72e18d2df0 100644
--- a/jps/jps-plugin/src/org/jetbrains/jet/jps/build/KotlinBuilder.java
+++ b/jps/jps-plugin/src/org/jetbrains/jet/jps/build/KotlinBuilder.java
@@ -27,7 +27,10 @@ import org.jetbrains.jet.cli.common.arguments.K2JVMCompilerArguments;
 import org.jetbrains.jet.cli.common.messages.CompilerMessageLocation;
 import org.jetbrains.jet.cli.common.messages.CompilerMessageSeverity;
 import org.jetbrains.jet.cli.common.messages.MessageCollector;
-import org.jetbrains.jet.compiler.runner.*;
+import org.jetbrains.jet.compiler.runner.CompilerEnvironment;
+import org.jetbrains.jet.compiler.runner.CompilerRunnerConstants;
+import org.jetbrains.jet.compiler.runner.OutputItemsCollectorImpl;
+import org.jetbrains.jet.compiler.runner.SimpleOutputItem;
 import org.jetbrains.jet.jps.JpsKotlinCompilerSettings;
 import org.jetbrains.jet.utils.PathUtil;
 import org.jetbrains.jps.ModuleChunk;
@@ -49,10 +52,7 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Set;
 
-import static org.jetbrains.jet.cli.common.messages.CompilerMessageSeverity.EXCEPTION;
-import static org.jetbrains.jet.cli.common.messages.CompilerMessageSeverity.INFO;
-import static org.jetbrains.jet.cli.common.messages.CompilerMessageSeverity.WARNING;
-
+import static org.jetbrains.jet.cli.common.messages.CompilerMessageSeverity.*;
 import static org.jetbrains.jet.compiler.runner.KotlinCompilerRunner.runK2JsCompiler;
 import static org.jetbrains.jet.compiler.runner.KotlinCompilerRunner.runK2JvmCompiler;
 
@@ -105,6 +105,10 @@ public class KotlinBuilder extends ModuleLevelBuilder {
 
         CompilerEnvironment environment = CompilerEnvironment.getEnvironmentFor(PathUtil.getKotlinPathsForJpsPluginOrJpsTests(), outputDir);
         if (!environment.success()) {
+            if (!hasKotlinFiles(chunk)) {
+                // Configuration is bad, but there's nothing to compile anyways
+                return ExitCode.NOTHING_DONE;
+            }
             environment.reportErrorsTo(messageCollector);
             return ExitCode.ABORT;
         }
@@ -171,6 +175,18 @@ public class KotlinBuilder extends ModuleLevelBuilder {
         return ExitCode.OK;
     }
 
+    private static boolean hasKotlinFiles(@NotNull ModuleChunk chunk) {
+        boolean hasKotlinFiles = false;
+        for (ModuleBuildTarget target : chunk.getTargets()) {
+            List<File> sourceFiles = KotlinSourceFileCollector.getAllKotlinSourceFiles(target);
+            if (!sourceFiles.isEmpty()) {
+                hasKotlinFiles = true;
+                break;
+            }
+        }
+        return hasKotlinFiles;
+    }
+
     private static boolean isJavaPluginEnabled(@NotNull CompileContext context) {
         try {
             // Using reflection for backward compatibility with IDEA 12