DynamicMethod createMethod(
RubyModule module, Function function, Type returnType, Type[] parameterTypes) {
FastIntMethodFactory factory = this;
IntParameterConverter[] parameterConverters = new IntParameterConverter[parameterTypes.length];
IntResultConverter resultConverter = factory.getIntResultConverter(returnType);
for (int i = 0; i < parameterConverters.length; ++i) {
parameterConverters[i] = factory.getIntParameterConverter(parameterTypes[i]);
}
switch (parameterTypes.length) {
case 0:
return new FastIntMethodZeroArg(module, function, resultConverter, parameterConverters);
case 1:
return new FastIntMethodOneArg(module, function, resultConverter, parameterConverters);
case 2:
return new FastIntMethodTwoArg(module, function, resultConverter, parameterConverters);
case 3:
return new FastIntMethodThreeArg(module, function, resultConverter, parameterConverters);
default:
throw module
.getRuntime()
.newRuntimeError("Arity " + parameterTypes.length + " not implemented");
}
}
DynamicMethod createMethod(
RubyModule module,
Function function,
Type returnType,
Type[] parameterTypes,
CallingConvention convention,
IRubyObject enums) {
FunctionInvoker functionInvoker = getFunctionInvoker(returnType);
ParameterMarshaller[] marshallers = new ParameterMarshaller[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; ++i) {
marshallers[i] = getMarshaller(parameterTypes[i], convention, enums);
if (marshallers[i] == null) {
throw module
.getRuntime()
.newTypeError("Could not create marshaller for " + parameterTypes[i]);
}
}
/*
* If there is exactly _one_ callback argument to the function,
* then a block can be given and automatically subsituted for the callback
* parameter.
*/
if (marshallers.length > 0) {
int cbcount = 0, cbindex = -1;
for (int i = 0; i < marshallers.length; ++i) {
if (marshallers[i] instanceof CallbackMarshaller) {
cbcount++;
cbindex = i;
}
}
if (cbcount == 1) {
return new CallbackMethodWithBlock(module, function, functionInvoker, marshallers, cbindex);
}
}
//
// Determine if the parameter might be passed as a 32bit int parameter.
// This just applies to buffer/pointer types.
//
FastIntMethodFactory fastIntFactory = FastIntMethodFactory.getFactory();
boolean canBeFastInt =
enums.isNil() && parameterTypes.length <= 3 && fastIntFactory.isFastIntResult(returnType);
for (int i = 0; canBeFastInt && i < parameterTypes.length; ++i) {
if (!(parameterTypes[i] instanceof Type.Builtin) || marshallers[i].needsInvocationSession()) {
canBeFastInt = false;
} else {
switch (parameterTypes[i].getNativeType()) {
case POINTER:
case BUFFER_IN:
case BUFFER_OUT:
case BUFFER_INOUT:
canBeFastInt = Platform.getPlatform().addressSize() == 32;
break;
default:
canBeFastInt = fastIntFactory.isFastIntParam(parameterTypes[i]);
break;
}
}
}
if (!canBeFastInt)
switch (parameterTypes.length) {
case 0:
return new DefaultMethodZeroArg(module, function, functionInvoker);
case 1:
return new DefaultMethodOneArg(module, function, functionInvoker, marshallers);
case 2:
return new DefaultMethodTwoArg(module, function, functionInvoker, marshallers);
case 3:
return new DefaultMethodThreeArg(module, function, functionInvoker, marshallers);
default:
return new DefaultMethod(module, function, functionInvoker, marshallers);
}
//
// Set up for potentially fast-int operations
//
IntResultConverter resultConverter = fastIntFactory.getIntResultConverter(returnType);
IntParameterConverter[] intParameterConverters =
new IntParameterConverter[parameterTypes.length];
for (int i = 0; i < parameterTypes.length; ++i) {
intParameterConverters[i] = fastIntFactory.getIntParameterConverter(parameterTypes[i]);
}
switch (parameterTypes.length) {
case 0:
return new FastIntMethodZeroArg(module, function, resultConverter, intParameterConverters);
case 1:
return new FastIntPointerMethodOneArg(
module, function, resultConverter, intParameterConverters, marshallers);
case 2:
return new FastIntPointerMethodTwoArg(
module, function, resultConverter, intParameterConverters, marshallers);
case 3:
return new FastIntPointerMethodThreeArg(
module, function, resultConverter, intParameterConverters, marshallers);
}
throw new IllegalArgumentException("Parameter types not supported");
}