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ruby--ruby/ext/fiddle/conversions.c
Kenta Murata 9b0c36b390
Import fiddle-1.0.4 (#3860) 
I don't use tool/sync_default_gem.rb because the last sync was incomplete.

Co-authored-by: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
Co-authored-by: sinisterchipmunk <sinisterchipmunk@gmail.com>
Co-authored-by: Sutou Kouhei <kou@clear-code.com>
2020-12-11 09:41:12 +09:00

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#include <fiddle.h>
VALUE
rb_fiddle_type_ensure(VALUE type)
{
VALUE original_type = type;
if (!RB_SYMBOL_P(type)) {
VALUE type_string = rb_check_string_type(type);
if (!NIL_P(type_string)) {
type = rb_to_symbol(type_string);
}
}
if (RB_SYMBOL_P(type)) {
ID type_id = rb_sym2id(type);
ID void_id;
ID voidp_id;
ID char_id;
ID short_id;
ID int_id;
ID long_id;
#ifdef TYPE_LONG_LONG
ID long_long_id;
#endif
#ifdef TYPE_INT8_T
ID int8_t_id;
#endif
#ifdef TYPE_INT16_T
ID int16_t_id;
#endif
#ifdef TYPE_INT32_T
ID int32_t_id;
#endif
#ifdef TYPE_INT64_T
ID int64_t_id;
#endif
ID float_id;
ID double_id;
ID variadic_id;
ID const_string_id;
ID size_t_id;
ID ssize_t_id;
ID ptrdiff_t_id;
ID intptr_t_id;
ID uintptr_t_id;
RUBY_CONST_ID(void_id, "void");
RUBY_CONST_ID(voidp_id, "voidp");
RUBY_CONST_ID(char_id, "char");
RUBY_CONST_ID(short_id, "short");
RUBY_CONST_ID(int_id, "int");
RUBY_CONST_ID(long_id, "long");
#ifdef TYPE_LONG_LONG
RUBY_CONST_ID(long_long_id, "long_long");
#endif
#ifdef TYPE_INT8_T
RUBY_CONST_ID(int8_t_id, "int8_t");
#endif
#ifdef TYPE_INT16_T
RUBY_CONST_ID(int16_t_id, "int16_t");
#endif
#ifdef TYPE_INT32_T
RUBY_CONST_ID(int32_t_id, "int32_t");
#endif
#ifdef TYPE_INT64_T
RUBY_CONST_ID(int64_t_id, "int64_t");
#endif
RUBY_CONST_ID(float_id, "float");
RUBY_CONST_ID(double_id, "double");
RUBY_CONST_ID(variadic_id, "variadic");
RUBY_CONST_ID(const_string_id, "const_string");
RUBY_CONST_ID(size_t_id, "size_t");
RUBY_CONST_ID(ssize_t_id, "ssize_t");
RUBY_CONST_ID(ptrdiff_t_id, "ptrdiff_t");
RUBY_CONST_ID(intptr_t_id, "intptr_t");
RUBY_CONST_ID(uintptr_t_id, "uintptr_t");
if (type_id == void_id) {
return INT2NUM(TYPE_VOID);
}
else if (type_id == voidp_id) {
return INT2NUM(TYPE_VOIDP);
}
else if (type_id == char_id) {
return INT2NUM(TYPE_CHAR);
}
else if (type_id == short_id) {
return INT2NUM(TYPE_SHORT);
}
else if (type_id == int_id) {
return INT2NUM(TYPE_INT);
}
else if (type_id == long_id) {
return INT2NUM(TYPE_LONG);
}
#ifdef TYPE_LONG_LONG
else if (type_id == long_long_id) {
return INT2NUM(TYPE_LONG_LONG);
}
#endif
#ifdef TYPE_INT8_T
else if (type_id == int8_t_id) {
return INT2NUM(TYPE_INT8_T);
}
#endif
#ifdef TYPE_INT16_T
else if (type_id == int16_t_id) {
return INT2NUM(TYPE_INT16_T);
}
#endif
#ifdef TYPE_INT32_T
else if (type_id == int32_t_id) {
return INT2NUM(TYPE_INT32_T);
}
#endif
#ifdef TYPE_INT64_T
else if (type_id == int64_t_id) {
return INT2NUM(TYPE_INT64_T);
}
#endif
else if (type_id == float_id) {
return INT2NUM(TYPE_FLOAT);
}
else if (type_id == double_id) {
return INT2NUM(TYPE_DOUBLE);
}
else if (type_id == variadic_id) {
return INT2NUM(TYPE_VARIADIC);
}
else if (type_id == const_string_id) {
return INT2NUM(TYPE_CONST_STRING);
}
else if (type_id == size_t_id) {
return INT2NUM(TYPE_SIZE_T);
}
else if (type_id == ssize_t_id) {
return INT2NUM(TYPE_SSIZE_T);
}
else if (type_id == ptrdiff_t_id) {
return INT2NUM(TYPE_PTRDIFF_T);
}
else if (type_id == intptr_t_id) {
return INT2NUM(TYPE_INTPTR_T);
}
else if (type_id == uintptr_t_id) {
return INT2NUM(TYPE_UINTPTR_T);
}
else {
type = original_type;
}
}
return rb_to_int(type);
}
ffi_type *
rb_fiddle_int_to_ffi_type(int type)
{
int signed_p = 1;
if (type < 0) {
type = -1 * type;
signed_p = 0;
}
#define rb_ffi_type_of(t) (signed_p ? &ffi_type_s##t : &ffi_type_u##t)
switch (type) {
case TYPE_VOID:
return &ffi_type_void;
case TYPE_VOIDP:
return &ffi_type_pointer;
case TYPE_CHAR:
return rb_ffi_type_of(char);
case TYPE_SHORT:
return rb_ffi_type_of(short);
case TYPE_INT:
return rb_ffi_type_of(int);
case TYPE_LONG:
return rb_ffi_type_of(long);
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
return rb_ffi_type_of(long_long);
#endif
case TYPE_FLOAT:
return &ffi_type_float;
case TYPE_DOUBLE:
return &ffi_type_double;
case TYPE_CONST_STRING:
return &ffi_type_pointer;
default:
rb_raise(rb_eRuntimeError, "unknown type %d", type);
}
return &ffi_type_pointer;
}
ffi_type *
int_to_ffi_type(int type)
{
return rb_fiddle_int_to_ffi_type(type);
}
void
rb_fiddle_value_to_generic(int type, VALUE *src, fiddle_generic *dst)
{
switch (type) {
case TYPE_VOID:
break;
case TYPE_VOIDP:
dst->pointer = NUM2PTR(rb_Integer(*src));
break;
case TYPE_CHAR:
dst->schar = (signed char)NUM2INT(*src);
break;
case -TYPE_CHAR:
dst->uchar = (unsigned char)NUM2UINT(*src);
break;
case TYPE_SHORT:
dst->sshort = (unsigned short)NUM2INT(*src);
break;
case -TYPE_SHORT:
dst->sshort = (signed short)NUM2UINT(*src);
break;
case TYPE_INT:
dst->sint = NUM2INT(*src);
break;
case -TYPE_INT:
dst->uint = NUM2UINT(*src);
break;
case TYPE_LONG:
dst->slong = NUM2LONG(*src);
break;
case -TYPE_LONG:
dst->ulong = NUM2ULONG(*src);
break;
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
dst->slong_long = NUM2LL(*src);
break;
case -TYPE_LONG_LONG:
dst->ulong_long = NUM2ULL(*src);
break;
#endif
case TYPE_FLOAT:
dst->ffloat = (float)NUM2DBL(*src);
break;
case TYPE_DOUBLE:
dst->ddouble = NUM2DBL(*src);
break;
case TYPE_CONST_STRING:
if (NIL_P(*src)) {
dst->pointer = NULL;
}
else {
dst->pointer = rb_string_value_cstr(src);
}
break;
default:
rb_raise(rb_eRuntimeError, "unknown type %d", type);
}
}
void
value_to_generic(int type, VALUE src, fiddle_generic *dst)
{
/* src isn't safe from GC when type is TYPE_CONST_STRING and src
* isn't String. */
rb_fiddle_value_to_generic(type, &src, dst);
}
VALUE
rb_fiddle_generic_to_value(VALUE rettype, fiddle_generic retval)
{
int type = NUM2INT(rettype);
VALUE cPointer;
cPointer = rb_const_get(mFiddle, rb_intern("Pointer"));
switch (type) {
case TYPE_VOID:
return Qnil;
case TYPE_VOIDP:
return rb_funcall(cPointer, rb_intern("[]"), 1,
PTR2NUM((void *)retval.pointer));
case TYPE_CHAR:
return INT2NUM((signed char)retval.fffi_sarg);
case -TYPE_CHAR:
return INT2NUM((unsigned char)retval.fffi_arg);
case TYPE_SHORT:
return INT2NUM((signed short)retval.fffi_sarg);
case -TYPE_SHORT:
return INT2NUM((unsigned short)retval.fffi_arg);
case TYPE_INT:
return INT2NUM((signed int)retval.fffi_sarg);
case -TYPE_INT:
return UINT2NUM((unsigned int)retval.fffi_arg);
case TYPE_LONG:
return LONG2NUM(retval.slong);
case -TYPE_LONG:
return ULONG2NUM(retval.ulong);
#if HAVE_LONG_LONG
case TYPE_LONG_LONG:
return LL2NUM(retval.slong_long);
case -TYPE_LONG_LONG:
return ULL2NUM(retval.ulong_long);
#endif
case TYPE_FLOAT:
return rb_float_new(retval.ffloat);
case TYPE_DOUBLE:
return rb_float_new(retval.ddouble);
case TYPE_CONST_STRING:
if (retval.pointer) {
return rb_str_new_cstr(retval.pointer);
}
else {
return Qnil;
}
default:
rb_raise(rb_eRuntimeError, "unknown type %d", type);
}
UNREACHABLE;
}
VALUE
generic_to_value(VALUE rettype, fiddle_generic retval)
{
return rb_fiddle_generic_to_value(rettype, retval);
}
/* vim: set noet sw=4 sts=4 */
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