ability to compile text (not file)

compiler/cli/src/org/jetbrains/jet/compiler/CompileEnvironment.java

@@ -22,6 +22,8 @@ import com.intellij.openapi.util.Disposer;
 import com.intellij.openapi.util.io.FileUtil;
 import com.intellij.psi.JavaPsiFacade;
 import com.intellij.psi.search.GlobalSearchScope;
+import com.intellij.testFramework.LightVirtualFile;
+import com.intellij.util.LocalTimeCounter;
 import com.intellij.util.Processor;
 import jet.modules.AllModules;
 import jet.modules.Module;
@@ -32,6 +34,7 @@ import org.jetbrains.jet.codegen.GeneratedClassLoader;
 import org.jetbrains.jet.lang.psi.JetFile;
 import org.jetbrains.jet.lang.psi.JetPsiUtil;
 import org.jetbrains.jet.lang.resolve.java.JvmAbi;
+import org.jetbrains.jet.plugin.JetLanguage;
 import org.jetbrains.jet.plugin.JetMainDetector;
 import org.jetbrains.jet.plugin.compiler.PathUtil;
 
@@ -332,6 +335,18 @@ public class CompileEnvironment {
         }
     }
 
+    public ClassLoader compileText(String code) {
+        CompileSession session = new CompileSession(myEnvironment, myFileNameTransformer);
+        session.addSources(new LightVirtualFile("script" + LocalTimeCounter.currentTime() + ".kt", JetLanguage.INSTANCE, code));
+
+        if (!session.analyze(myErrorStream) && !ignoreErrors) {
+            return null;
+        }
+
+        ClassFileFactory factory = session.generate();
+        return new GeneratedClassLoader(factory);
+    }
+
     public boolean compileBunchOfSources(String sourceFileOrDir, String jar, String outputDir, boolean includeRuntime) {
         CompileSession session = new CompileSession(myEnvironment, myFileNameTransformer);
         session.addSources(sourceFileOrDir);

compiler/cli/src/org/jetbrains/jet/compiler/JetCoreEnvironment.java

@@ -26,6 +26,9 @@ import org.jetbrains.jet.lang.types.JetStandardLibrary;
 import org.jetbrains.jet.plugin.JetFileType;
 import org.jetbrains.jet.plugin.compiler.PathUtil;
 
+import java.io.File;
+import java.net.URL;
+import java.net.URLClassLoader;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -68,4 +71,18 @@ public class JetCoreEnvironment extends JavaCoreEnvironment {
     public void setCompilerPlugins(List<CompilerPlugin> compilerPlugins) {
         this.compilerPlugins = compilerPlugins;
     }
+
+    public void addToClasspathFromClassLoader(ClassLoader loader) {
+        ClassLoader parent = loader.getParent();
+        if(parent != null)
+            addToClasspathFromClassLoader(parent);
+        
+        if(loader instanceof URLClassLoader) {
+            for (URL url : ((URLClassLoader) loader).getURLs()) {
+                File file = new File(url.getPath());
+                if(!file.isFile() || file.getPath().endsWith(".jar"))
+                    addToClasspath(file);
+            }
+        }
+    }
 }

compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java

@@ -223,18 +223,4 @@ public abstract class CodegenTestCase extends JetLiteFixture {
         return loadClass(name, codegens);
     }
 
-    private static class MyClassLoader extends ClassLoader {
-      public MyClassLoader(ClassLoader parent) {
-        super(parent);
-      }
-
-      public Class doDefineClass(String name, byte[] data) {
-        return defineClass(name, data, 0, data.length);
-      }
-
-      @Override
-      public Class<?> loadClass(String name) throws ClassNotFoundException {
-        return super.loadClass(name);
-      }
-    }
 }

compiler/tests/org/jetbrains/jet/codegen/CompileTextTest.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2000-2012 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.jet.codegen;
+
+import junit.framework.TestCase;
+import org.jetbrains.jet.compiler.CompileEnvironment;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class CompileTextTest extends CodegenTestCase {
+    public void testMe() throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+        String text = "import org.jetbrains.jet.codegen.CompileTextTest; fun x() = CompileTextTest()";
+        CompileEnvironment compileEnvironment = new CompileEnvironment();
+        compileEnvironment.getMyEnvironment().addToClasspathFromClassLoader(getClass().getClassLoader());
+        ClassLoader classLoader = compileEnvironment.compileText(text);
+        Class<?> namespace = classLoader.loadClass("namespace");
+        Method x = namespace.getDeclaredMethod("x");
+        Object invoke = x.invoke(null);
+        assertTrue(invoke instanceof CompileTextTest);
+    }
+}