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https://github.com/ruby/ruby.git
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127 lines
2.5 KiB
C
127 lines
2.5 KiB
C
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#include <fiddle.h>
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ffi_type *
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int_to_ffi_type(int type)
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{
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int signed_p = 1;
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if (type < 0) {
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type = -1 * type;
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signed_p = 0;
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}
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#define rb_ffi_type_of(t) (signed_p ? &ffi_type_s##t : &ffi_type_u##t)
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switch (type) {
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case TYPE_VOID:
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return &ffi_type_void;
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case TYPE_VOIDP:
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return &ffi_type_pointer;
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case TYPE_CHAR:
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return rb_ffi_type_of(char);
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case TYPE_SHORT:
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return rb_ffi_type_of(short);
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case TYPE_INT:
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return rb_ffi_type_of(int);
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case TYPE_LONG:
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return rb_ffi_type_of(long);
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#if HAVE_LONG_LONG
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case TYPE_LONG_LONG:
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return rb_ffi_type_of(int64);
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#endif
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case TYPE_FLOAT:
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return &ffi_type_float;
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case TYPE_DOUBLE:
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return &ffi_type_double;
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default:
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rb_raise(rb_eRuntimeError, "unknown type %d", type);
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}
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return &ffi_type_pointer;
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}
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void
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value_to_generic(int type, VALUE src, fiddle_generic * dst)
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{
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int signed_p = 1;
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if (type < 0) {
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type = -1 * type;
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signed_p = 0;
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}
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switch (type) {
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case TYPE_VOID:
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break;
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case TYPE_VOIDP:
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dst->pointer = NUM2PTR(rb_Integer(src));
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break;
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case TYPE_CHAR:
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case TYPE_SHORT:
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case TYPE_INT:
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dst->sint = NUM2INT(src);
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break;
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case TYPE_LONG:
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if (signed_p)
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dst->slong = NUM2LONG(src);
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else
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dst->ulong = NUM2LONG(src);
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break;
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#if HAVE_LONG_LONG
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case TYPE_LONG_LONG:
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dst->long_long = rb_big2ull(src);
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break;
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#endif
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case TYPE_FLOAT:
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dst->ffloat = (float)NUM2DBL(src);
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break;
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case TYPE_DOUBLE:
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dst->ddouble = NUM2DBL(src);
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break;
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default:
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rb_raise(rb_eRuntimeError, "unknown type %d", type);
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}
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}
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VALUE
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generic_to_value(VALUE rettype, fiddle_generic retval)
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{
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int signed_p = 1;
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int type = NUM2INT(rettype);
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VALUE cPointer;
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cPointer = rb_const_get(mFiddle, rb_intern("Pointer"));
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if (type < 0) {
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type = -1 * type;
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signed_p = 0;
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}
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switch (type) {
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case TYPE_VOID:
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return Qnil;
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case TYPE_VOIDP:
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return rb_funcall(cPointer, rb_intern("[]"), 1,
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PTR2NUM((void *)retval.pointer));
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case TYPE_CHAR:
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case TYPE_SHORT:
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case TYPE_INT:
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return INT2NUM(retval.sint);
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case TYPE_LONG:
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if (signed_p) return LONG2NUM(retval.slong);
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return ULONG2NUM(retval.ulong);
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#if HAVE_LONG_LONG
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case TYPE_LONG_LONG:
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return rb_ll2inum(retval.long_long);
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break;
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#endif
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case TYPE_FLOAT:
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return rb_float_new(retval.ffloat);
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case TYPE_DOUBLE:
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return rb_float_new(retval.ddouble);
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default:
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rb_raise(rb_eRuntimeError, "unknown type %d", type);
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}
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}
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/* vim: set noet sw=4 sts=4 */
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