Method generateMethod

src/bsh/ClassGeneratorUtil.java:318–372

Generate a delegate method - static or instance. The generated code packs the method arguments into an object array (wrapping primitive types in bsh.Primitive), invokes the static or instance namespace invokeMethod() method, and then unwraps / returns the result.

(String className, String fqClassName, String methodName, String returnType, String[] paramTypes, int modifiers, ClassWriter cw)

	 * the result.
	 */
	private static void generateMethod(String className, String fqClassName, String methodName, String returnType, String[] paramTypes, int modifiers, ClassWriter cw) {
		String[] exceptions = null;
		boolean isStatic = (modifiers & ACC_STATIC) != 0;

		if (returnType == null) // map loose return type to Object
		{
			returnType = OBJECT;
		}

		String methodDescriptor = getMethodDescriptor(returnType, paramTypes);

		// Generate method body
		CodeVisitor cv = cw.visitMethod(modifiers, methodName, methodDescriptor, exceptions);

		if ((modifiers & ACC_ABSTRACT) != 0) {
			return;
		}

		// Generate code to push the BSHTHIS or BSHSTATIC field
		if (isStatic) {
			cv.visitFieldInsn(GETSTATIC, fqClassName, BSHSTATIC + className, "Lbsh/This;");
		} else {
			// Push 'this'
			cv.visitVarInsn(ALOAD, 0);

			// Get the instance field
			cv.visitFieldInsn(GETFIELD, fqClassName, BSHTHIS + className, "Lbsh/This;");
		}

		// Push the name of the method as a constant
		cv.visitLdcInsn(methodName);

		// Generate code to push arguments as an object array
		generateParameterReifierCode(paramTypes, isStatic, cv);

		// Push nulls for various args of invokeMethod
		cv.visitInsn(ACONST_NULL); // interpreter
		cv.visitInsn(ACONST_NULL); // callstack
		cv.visitInsn(ACONST_NULL); // callerinfo

		// Push the boolean constant 'true' (for declaredOnly)
		cv.visitInsn(ICONST_1);

		// Invoke the method This.invokeMethod( name, Class [] sig, boolean )
		cv.visitMethodInsn(INVOKEVIRTUAL, "bsh/This", "invokeMethod", Type.getMethodDescriptor(Type.getType(Object.class), new Type[]{Type.getType(String.class), Type.getType(Object[].class), Type.getType(Interpreter.class), Type.getType(CallStack.class), Type.getType(SimpleNode.class), Type.getType(Boolean.TYPE)}));

		// Generate code to unwrap bsh Primitive types
		cv.visitMethodInsn(INVOKESTATIC, "bsh/Primitive", "unwrap", "(Ljava/lang/Object;)Ljava/lang/Object;");

		// Generate code to return the value
		generateReturnCode(returnType, cv);

		// Need to calculate this... just fudging here for now.
		cv.visitMaxs(20, 20);
	}


	/**