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/*
* Copyright (c) 2009, Wayne Meissner
* Copyright (c) 2009, Luc Heinrich
* Copyright (c) 2009, Aman Gupta.
*
* Copyright (c) 2008-2013, Ruby FFI project contributors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Ruby FFI project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <ruby.h>
#include "Pointer.h"
#include "rbffi.h"
#include "Function.h"
#include "StructByValue.h"
#include "Types.h"
#include "Struct.h"
#include "MappedType.h"
#include "MemoryPointer.h"
#include "LongDouble.h"
static ID id_from_native = 0;
VALUE
rbffi_NativeValue_ToRuby(Type* type, VALUE rbType, const void* ptr)
{
switch (type->nativeType) {
case NATIVE_VOID:
return Qnil;
case NATIVE_INT8:
return INT2NUM((signed char) *(ffi_sarg *) ptr);
case NATIVE_INT16:
return INT2NUM((signed short) *(ffi_sarg *) ptr);
case NATIVE_INT32:
return INT2NUM((signed int) *(ffi_sarg *) ptr);
case NATIVE_LONG:
return LONG2NUM((signed long) *(ffi_sarg *) ptr);
case NATIVE_INT64:
return LL2NUM(*(signed long long *) ptr);
case NATIVE_UINT8:
return UINT2NUM((unsigned char) *(ffi_arg *) ptr);
case NATIVE_UINT16:
return UINT2NUM((unsigned short) *(ffi_arg *) ptr);
case NATIVE_UINT32:
return UINT2NUM((unsigned int) *(ffi_arg *) ptr);
case NATIVE_ULONG:
return ULONG2NUM((unsigned long) *(ffi_arg *) ptr);
case NATIVE_UINT64:
return ULL2NUM(*(unsigned long long *) ptr);
case NATIVE_FLOAT32:
return rb_float_new(*(float *) ptr);
case NATIVE_FLOAT64:
return rb_float_new(*(double *) ptr);
case NATIVE_LONGDOUBLE:
return rbffi_longdouble_new(*(long double *) ptr);
case NATIVE_STRING:
return (*(void **) ptr != NULL) ? rb_tainted_str_new2(*(char **) ptr) : Qnil;
case NATIVE_POINTER:
return rbffi_Pointer_NewInstance(*(void **) ptr);
case NATIVE_BOOL:
return ((unsigned char) *(ffi_arg *) ptr) ? Qtrue : Qfalse;
case NATIVE_FUNCTION:
case NATIVE_CALLBACK: {
return *(void **) ptr != NULL
? rbffi_Function_NewInstance(rbType, rbffi_Pointer_NewInstance(*(void **) ptr))
: Qnil;
}
case NATIVE_STRUCT: {
StructByValue* sbv = (StructByValue *)type;
AbstractMemory* mem;
VALUE rbMemory = rbffi_MemoryPointer_NewInstance(1, sbv->base.ffiType->size, false);
Data_Get_Struct(rbMemory, AbstractMemory, mem);
memcpy(mem->address, ptr, sbv->base.ffiType->size);
RB_GC_GUARD(rbMemory);
RB_GC_GUARD(rbType);
return rb_class_new_instance(1, &rbMemory, sbv->rbStructClass);
}
case NATIVE_MAPPED: {
/*
* For mapped types, first convert to the real native type, then upcall to
* ruby to convert to the expected return type
*/
MappedType* m = (MappedType *) type;
VALUE values[2], rbReturnValue;
values[0] = rbffi_NativeValue_ToRuby(m->type, m->rbType, ptr);
values[1] = Qnil;
rbReturnValue = rb_funcall2(m->rbConverter, id_from_native, 2, values);
RB_GC_GUARD(values[0]);
RB_GC_GUARD(rbType);
return rbReturnValue;
}
default:
rb_raise(rb_eRuntimeError, "Unknown type: %d", type->nativeType);
return Qnil;
}
}
void
rbffi_Types_Init(VALUE moduleFFI)
{
id_from_native = rb_intern("from_native");
}
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