1 files changed, 101 insertions, 0 deletions
diff --git a/tests/indy/three/Generator.java b/tests/indy/three/Generator.java
new file mode 100644
index 000000000..77f1e1807
--- /dev/null
+++ b/tests/indy/three/Generator.java
@@ -0,0 +1,101 @@
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.lang.invoke.CallSite;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+
+import org.objectweb.asm.*;
+
+public class Generator implements Opcodes {
+
+	private String generatedRunnerTypename,linkClassName,dynMethodName,dynMethodDescriptor;
+	private byte[] bytes;
+	
+	/**
+	 * Main entry point generates a default thing, in this case a class called 'Invoker' that will use the bootstrap method on Code1 to run 'foo()'
+	 * @param args
+	 * @throws Throwable
+	 */
+	public static void main(String[] args) throws Throwable {
+		Generator g = new Generator("Invoker","Code1","foo","()V");
+		g.dump();
+	}
+	
+	public byte[] getBytes() {
+		return bytes;
+	}
+
+	public Generator(String generatedRunnerTypename, String linkClassName, String dynMethodName, String dynMethodDescriptor) {
+		this.generatedRunnerTypename = generatedRunnerTypename;
+		this.linkClassName = linkClassName;
+		this.dynMethodName = dynMethodName;
+		this.dynMethodDescriptor = dynMethodDescriptor;
+		this.bytes = generateClass();
+	}
+
+	public void dump() {
+		try {
+			FileOutputStream fos
+			 = new FileOutputStream(new File(generatedRunnerTypename+".class"));
+			fos.write(bytes);
+			fos.close();
+		} catch (FileNotFoundException e) {
+			e.printStackTrace();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+	
+	public byte[] generateClass() {
+		ClassWriter cw = new ClassWriter(0);
+		cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, generatedRunnerTypename, null, "java/lang/Object", null);
+		createConstructor(cw);
+		createMain(cw);
+		cw.visitEnd();
+		return cw.toByteArray();
+	}
+
+	private void createMain(ClassWriter cw) {
+		MethodVisitor mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
+		mv.visitCode();
+		MethodType mt = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class,
+				MethodType.class);
+		Handle bootstrap = new Handle(Opcodes.H_INVOKESTATIC, this.linkClassName, "bootstrap",
+				mt.toMethodDescriptorString());
+		int maxStackSize = 0;//addMethodParameters(mv);
+		mv.visitInvokeDynamicInsn(dynMethodName, dynMethodDescriptor, bootstrap);
+		mv.visitInsn(RETURN);
+		mv.visitMaxs(maxStackSize, 1);
+		mv.visitEnd();
+	}
+	
+//	public byte[] dump(String dynamicInvokerClassName, String dynamicLinkageClassName, String bootstrapMethodName, String targetMethodDescriptor)
+//			throws Exception {
+//		ClassWriter cw = new ClassWriter(0);
+//		cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, dynamicInvokerClassName, null, "java/lang/Object", null);
+//		createConstructor(cw);
+//		createMain(dynamicLinkageClassName, bootstrapMethodName, targetMethodDescriptor, cw);
+//		cw.visitEnd();
+//		return cw.toByteArray();
+//	}
+
+
+
+//	protected int addMethodParameters(MethodVisitor mv) {
+//		return 0;
+//	}
+
+
+	private void createConstructor(ClassWriter cw) {
+		MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
+		mv.visitCode();
+		mv.visitVarInsn(ALOAD, 0);
+		mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
+		mv.visitInsn(RETURN);
+		mv.visitMaxs(1, 1);
+		mv.visitEnd();
+	}
+}
+\ No newline at end of file