static FunctionInvoker getFunctionInvoker(Type returnType) {
if (returnType instanceof Type.Builtin) {
return getFunctionInvoker(returnType.getNativeType());
} else if (returnType instanceof CallbackInfo) {
return new CallbackInvoker((CallbackInfo) returnType);
} else if (returnType instanceof org.jruby.ext.ffi.Enum) {
return new EnumInvoker((org.jruby.ext.ffi.Enum) returnType);
} else if (returnType instanceof StructByValue) {
return new StructByValueInvoker((StructByValue) returnType);
}
throw returnType.getRuntime().newArgumentError("Cannot get FunctionInvoker for " + returnType);
}
/**
* Gets a marshaller to convert from a ruby type to a native type.
*
* @param type The native type to convert to.
* @return A new <tt>Marshaller</tt>
*/
static final ParameterMarshaller getMarshaller(
Type type, CallingConvention convention, IRubyObject enums) {
if (type instanceof Type.Builtin) {
return enums != null && !enums.isNil()
? getEnumMarshaller(type, enums)
: getMarshaller(type.getNativeType());
} else if (type instanceof org.jruby.ext.ffi.CallbackInfo) {
return new CallbackMarshaller((org.jruby.ext.ffi.CallbackInfo) type, convention);
} else if (type instanceof org.jruby.ext.ffi.Enum) {
return getEnumMarshaller(
type, type.callMethod(type.getRuntime().getCurrentContext(), "to_hash"));
} else if (type instanceof org.jruby.ext.ffi.StructByValue) {
return StructByValueMarshaller.INSTANCE;
} else {
return null;
}
}
/**
* Gets a marshaller to convert from a ruby type to a native type.
*
* @param type The native type to convert to.
* @param enums The enum map
* @return A new <tt>ParameterMarshaller</tt>
*/
static final ParameterMarshaller getEnumMarshaller(Type type, IRubyObject enums) {
switch (type.getNativeType()) {
case INT8:
case UINT8:
case INT16:
case UINT16:
case INT32:
case UINT32:
case INT64:
case UINT64:
if (!(enums instanceof RubyHash)) {
throw type.getRuntime()
.newArgumentError(
"wrong argument type " + enums.getMetaClass().getName() + " (expected Hash)");
}
return new EnumMarshaller(getMarshaller(type.getNativeType()), (RubyHash) enums);
default:
return getMarshaller(type.getNativeType());
}
}
final boolean isFastIntParam(Type paramType) {
if (paramType instanceof Type.Builtin) {
switch (paramType.getNativeType()) {
case CHAR:
case UCHAR:
case SHORT:
case USHORT:
case INT:
case UINT:
case BOOL:
// case FLOAT:
return true;
case LONG:
case ULONG:
return Platform.getPlatform().longSize() == 32;
}
}
return false;
}
static boolean isEnumConversionRequired(Type type, Enums enums) {
if (type instanceof Type.Builtin && enums != null && !enums.isEmpty()) {
switch (type.getNativeType()) {
case CHAR:
case UCHAR:
case SHORT:
case USHORT:
case INT:
case UINT:
case LONG:
case ULONG:
case LONG_LONG:
case ULONG_LONG:
return true;
default:
return false;
}
}
return false;
}
final boolean isFastIntResult(Type type) {
if (type instanceof Type.Builtin) {
switch (type.getNativeType()) {
case VOID:
case CHAR:
case UCHAR:
case SHORT:
case USHORT:
case INT:
case UINT:
case BOOL:
return true;
case POINTER:
case STRING:
return Platform.getPlatform().addressSize() == 32;
case LONG:
case ULONG:
return Platform.getPlatform().longSize() == 32;
}
}
return false;
}
final IntResultConverter getIntResultConverter(Type type) {
return type instanceof Type.Builtin ? getIntResultConverter(type.getNativeType()) : null;
}