| /* |
| * Copyright (c) 2010, Wayne Meissner |
| * |
| * 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 <ffi.h> |
| #include "rbffi.h" |
| |
| #include "Type.h" |
| #include "MappedType.h" |
| |
| |
| static VALUE mapped_allocate(VALUE); |
| static VALUE mapped_initialize(VALUE, VALUE); |
| static void mapped_mark(MappedType *); |
| static ID id_native_type, id_to_native, id_from_native; |
| |
| VALUE rbffi_MappedTypeClass = Qnil; |
| |
| static VALUE |
| mapped_allocate(VALUE klass) |
| { |
| MappedType* m; |
| |
| VALUE obj = Data_Make_Struct(klass, MappedType, mapped_mark, -1, m); |
| |
| m->rbConverter = Qnil; |
| m->rbType = Qnil; |
| m->type = NULL; |
| m->base.nativeType = NATIVE_MAPPED; |
| m->base.ffiType = &ffi_type_void; |
| |
| return obj; |
| } |
| |
| /* |
| * call-seq: initialize(converter) |
| * @param [#native_type, #to_native, #from_native] converter +converter+ must respond to |
| * all these methods |
| * @return [self] |
| */ |
| static VALUE |
| mapped_initialize(VALUE self, VALUE rbConverter) |
| { |
| MappedType* m = NULL; |
| |
| if (!rb_respond_to(rbConverter, id_native_type)) { |
| rb_raise(rb_eNoMethodError, "native_type method not implemented"); |
| } |
| |
| if (!rb_respond_to(rbConverter, id_to_native)) { |
| rb_raise(rb_eNoMethodError, "to_native method not implemented"); |
| } |
| |
| if (!rb_respond_to(rbConverter, id_from_native)) { |
| rb_raise(rb_eNoMethodError, "from_native method not implemented"); |
| } |
| |
| Data_Get_Struct(self, MappedType, m); |
| m->rbType = rb_funcall2(rbConverter, id_native_type, 0, NULL); |
| if (!(rb_obj_is_kind_of(m->rbType, rbffi_TypeClass))) { |
| rb_raise(rb_eTypeError, "native_type did not return instance of FFI::Type"); |
| } |
| |
| m->rbConverter = rbConverter; |
| Data_Get_Struct(m->rbType, Type, m->type); |
| m->base.ffiType = m->type->ffiType; |
| |
| return self; |
| } |
| |
| static void |
| mapped_mark(MappedType* m) |
| { |
| rb_gc_mark(m->rbType); |
| rb_gc_mark(m->rbConverter); |
| } |
| |
| /* |
| * call-seq: mapped_type.native_type |
| * @return [Type] |
| * Get native type of mapped type. |
| */ |
| static VALUE |
| mapped_native_type(VALUE self) |
| { |
| MappedType*m = NULL; |
| Data_Get_Struct(self, MappedType, m); |
| |
| return m->rbType; |
| } |
| |
| /* |
| * call-seq: mapped_type.to_native(*args) |
| * @param args depends on {FFI::DataConverter} used to initialize +self+ |
| */ |
| static VALUE |
| mapped_to_native(int argc, VALUE* argv, VALUE self) |
| { |
| MappedType*m = NULL; |
| |
| Data_Get_Struct(self, MappedType, m); |
| |
| return rb_funcall2(m->rbConverter, id_to_native, argc, argv); |
| } |
| |
| /* |
| * call-seq: mapped_type.from_native(*args) |
| * @param args depends on {FFI::DataConverter} used to initialize +self+ |
| */ |
| static VALUE |
| mapped_from_native(int argc, VALUE* argv, VALUE self) |
| { |
| MappedType*m = NULL; |
| |
| Data_Get_Struct(self, MappedType, m); |
| |
| return rb_funcall2(m->rbConverter, id_from_native, argc, argv); |
| } |
| |
| void |
| rbffi_MappedType_Init(VALUE moduleFFI) |
| { |
| /* |
| * Document-class: FFI::Type::Mapped < FFI::Type |
| */ |
| rbffi_MappedTypeClass = rb_define_class_under(rbffi_TypeClass, "Mapped", rbffi_TypeClass); |
| |
| rb_global_variable(&rbffi_MappedTypeClass); |
| |
| id_native_type = rb_intern("native_type"); |
| id_to_native = rb_intern("to_native"); |
| id_from_native = rb_intern("from_native"); |
| |
| rb_define_alloc_func(rbffi_MappedTypeClass, mapped_allocate); |
| rb_define_method(rbffi_MappedTypeClass, "initialize", mapped_initialize, 1); |
| rb_define_method(rbffi_MappedTypeClass, "type", mapped_native_type, 0); |
| rb_define_method(rbffi_MappedTypeClass, "native_type", mapped_native_type, 0); |
| rb_define_method(rbffi_MappedTypeClass, "to_native", mapped_to_native, -1); |
| rb_define_method(rbffi_MappedTypeClass, "from_native", mapped_from_native, -1); |
| } |
| |