/** Returns a fully qualified method name concatenated with its signature. */
private static String getMethodSignature(Method method, Class[] argTypes) {
StringBuffer sb = new StringBuffer();
appendMethodSignature(argTypes, method.getReturnType(), sb);
return sb.toString();
}
private static void generateMethod(
ClassFileWriter cfw, String genName, String methodName, Class[] parms, Class returnType) {
StringBuffer sb = new StringBuffer();
int paramsEnd = appendMethodSignature(parms, returnType, sb);
String methodSignature = sb.toString();
cfw.startMethod(methodName, methodSignature, ClassFileWriter.ACC_PUBLIC);
// Prepare stack to call method
// push factory
cfw.add(ByteCode.ALOAD_0);
cfw.add(ByteCode.GETFIELD, genName, "factory", "Lorg/mozilla/javascript/ContextFactory;");
// push self
cfw.add(ByteCode.ALOAD_0);
cfw.add(ByteCode.GETFIELD, genName, "self", "Lorg/mozilla/javascript/Scriptable;");
// push function
cfw.add(ByteCode.ALOAD_0);
cfw.add(ByteCode.GETFIELD, genName, "delegee", "Lorg/mozilla/javascript/Scriptable;");
cfw.addPush(methodName);
cfw.addInvoke(
ByteCode.INVOKESTATIC,
"org/mozilla/javascript/JavaAdapter",
"getFunction",
"(Lorg/mozilla/javascript/Scriptable;"
+ "Ljava/lang/String;"
+ ")Lorg/mozilla/javascript/Function;");
// push arguments
generatePushWrappedArgs(cfw, parms, parms.length);
// push bits to indicate which parameters should be wrapped
if (parms.length > 64) {
// If it will be an issue, then passing a static boolean array
// can be an option, but for now using simple bitmask
throw Context.reportRuntimeError0(
"JavaAdapter can not subclass methods with more then" + " 64 arguments.");
}
long convertionMask = 0;
for (int i = 0; i != parms.length; ++i) {
if (!parms[i].isPrimitive()) {
convertionMask |= (1 << i);
}
}
cfw.addPush(convertionMask);
// go through utility method, which creates a Context to run the
// method in.
cfw.addInvoke(
ByteCode.INVOKESTATIC,
"org/mozilla/javascript/JavaAdapter",
"callMethod",
"(Lorg/mozilla/javascript/ContextFactory;"
+ "Lorg/mozilla/javascript/Scriptable;"
+ "Lorg/mozilla/javascript/Function;"
+ "[Ljava/lang/Object;"
+ "J"
+ ")Ljava/lang/Object;");
generateReturnResult(cfw, returnType, true);
cfw.stopMethod((short) paramsEnd);
}