Class: FFI::Type
- Inherits:
-
Object
- Object
- FFI::Type
- Defined in:
- ext/ffi_c/Type.c,
ext/ffi_c/Type.c
Overview
This class manages C types.
It embbed Builtin objects as constants (for names, see NativeType).
Direct Known Subclasses
Defined Under Namespace
Constant Summary collapse
- Struct =
rbffi_StructByValueClass
Instance Method Summary collapse
-
#alignment ⇒ Fixnum
Get Type alignment.
- #initialize(value) ⇒ self constructor
-
#inspect ⇒ String
Inspect Type object.
-
#size ⇒ Fixnum
Return type’s size, in bytes.
Constructor Details
#initialize(value) ⇒ self
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# File 'ext/ffi_c/Type.c', line 113
static VALUE
type_initialize(VALUE self, VALUE value)
{
Type* type;
Type* other;
TypedData_Get_Struct(self, Type, &rbffi_type_data_type, type);
if (FIXNUM_P(value)) {
type->nativeType = FIX2INT(value);
} else if (rb_obj_is_kind_of(value, rbffi_TypeClass)) {
TypedData_Get_Struct(value, Type, &rbffi_type_data_type, other);
type->nativeType = other->nativeType;
type->ffiType = other->ffiType;
} else {
rb_raise(rb_eArgError, "wrong type");
}
rb_obj_freeze(self);
return self;
}
|
Instance Method Details
#alignment ⇒ Fixnum
Get Type alignment.
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# File 'ext/ffi_c/Type.c', line 156
static VALUE
type_alignment(VALUE self)
{
Type *type;
TypedData_Get_Struct(self, Type, &rbffi_type_data_type, type);
return INT2FIX(type->ffiType->alignment);
}
|
#inspect ⇒ String
Inspect FFI::Type object.
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# File 'ext/ffi_c/Type.c', line 171
static VALUE
type_inspect(VALUE self)
{
char buf[100];
Type *type;
TypedData_Get_Struct(self, Type, &rbffi_type_data_type, type);
snprintf(buf, sizeof(buf), "#<%s::%p size=%d alignment=%d>",
rb_obj_classname(self), type, (int) type->ffiType->size, (int) type->ffiType->alignment);
return rb_str_new2(buf);
}
|
#size ⇒ Fixnum
Return type’s size, in bytes.
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# File 'ext/ffi_c/Type.c', line 141
static VALUE
type_size(VALUE self)
{
Type *type;
TypedData_Get_Struct(self, Type, &rbffi_type_data_type, type);
return INT2FIX(type->ffiType->size);
}
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