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Path: /opt/chef.upgrade/embedded/lib/ruby/gems/2.3.0/gems/ffi-1.9.18/ext/ffi_c/

Viewing File: DataConverter.c

#include <ruby.h>

#include <ffi.h>
#include "rbffi.h"

#include "Type.h"
#include "MappedType.h"


VALUE rbffi_DataConverterClass = Qnil;
static ID id_native_type_ivar;

/*
 * Get native type.
 * @overload native_type(type)
 *  @param [String, Symbol, Type] type
 *  @return [Type]
 *  Get native type from +type+.
 * @overload native_type
 *  @raise {NotImplementedError} This method must be overriden.
 */
static VALUE
conv_native_type(int argc, VALUE* argv, VALUE self)
{
    if (argc == 0) {
        if (!rb_ivar_defined(self, id_native_type_ivar)) {
            rb_raise(rb_eNotImpError, "native_type method not overridden and no native_type set");
        }

        return rb_ivar_get(self, id_native_type_ivar);

    } else if (argc == 1) {
        VALUE type = rbffi_Type_Find(argv[0]);

        rb_ivar_set(self, id_native_type_ivar, type);

        return type;

    } else {
        rb_raise(rb_eArgError, "incorrect arguments");
    }
}

/*
 * call-seq: to_native(value, ctx)
 * @param value
 * @param ctx
 * @return [value]
 * Convert to a native type.
 */
static VALUE
conv_to_native(VALUE self, VALUE value, VALUE ctx)
{
    return value;
}

/*
 * call-seq: from_native(value, ctx)
 * @param value
 * @param ctx
 * @return [value]
 * Convert from a native type.
 */
static VALUE
conv_from_native(VALUE self, VALUE value, VALUE ctx)
{
    return value;
}



void
rbffi_DataConverter_Init(VALUE moduleFFI)
{
    /*
     * Document-module: FFI::DataConverter
     * This module is used to extend somes classes and give then a common API.
     *
     * Most of methods defined here must be overriden.
     */
    rbffi_DataConverterClass = rb_define_module_under(moduleFFI, "DataConverter");

    rb_define_method(rbffi_DataConverterClass, "native_type", conv_native_type, -1);
    rb_define_method(rbffi_DataConverterClass, "to_native", conv_to_native, 2);
    rb_define_method(rbffi_DataConverterClass, "from_native", conv_from_native, 2);

    id_native_type_ivar = rb_intern("@native_type");
}