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#include <forstio/core/error.h>
#include <forstio/core/templates.h>
#include <forstio/codec/schema.h>
#include <string>
#include <sstream>
#include <map>
#include <iostream>
namespace saw {
namespace impl {
template<typename Schema>
struct c_primitive_string {
static_assert(always_false<Schema>, "Not supported");
};
template<>
struct c_primitive_string<schema::Int8> {
static constexpr std::string_view value = "int8_t";
};
template<>
struct c_primitive_string<schema::Int16> {
static constexpr std::string_view value = "int16_t";
};
template<>
struct c_primitive_string<schema::Int32> {
static constexpr std::string_view value = "int32_t";
};
template<>
struct c_primitive_string<schema::Int64> {
static constexpr std::string_view value = "int64_t";
};
template<>
struct c_primitive_string<schema::UInt8> {
static constexpr std::string_view value = "uint8_t";
};
template<>
struct c_primitive_string<schema::UInt16> {
static constexpr std::string_view value = "uint16_t";
};
template<>
struct c_primitive_string<schema::UInt32> {
static constexpr std::string_view value = "uint32_t";
};
template<>
struct c_primitive_string<schema::UInt64> {
static constexpr std::string_view value = "uint64_t";
};
template<>
struct c_primitive_string<schema::Float32> {
static constexpr std::string_view value = "float";
};
template<>
struct c_primitive_string<schema::Float64> {
static constexpr std::string_view value = "double";
};
template<typename Schema>
struct c_data_translater {
static_assert(always_false<Schema>, "Not supported");
};
template<typename T, size_t N>
struct c_data_translater<schema::Primitive<T,N>> {
using Schema = schema::Primitive<T,N>;
static error_or<void> generate(std::map<std::string,std::string>& map_str, std::string& str, const std::string& prefix){
str += c_primitive_string<Schema>::value;
return void_t{};
}
};
template<typename T, size_t Dim>
struct c_data_translater<schema::Array<T,Dim>> {
static error_or<void> generate(std::map<std::string, std::string>& map_str, std::string& type_str, const std::string& prefix){
type_str = prefix + "_";
type_str += "array_";
std::string inner_type_str;
auto eov = impl::c_data_translater<T>::generate(map_str, inner_type_str, prefix);
if(eov.is_error()){
return eov;
}
type_str += inner_type_str;
if(Dim > 1){
type_str += "_";
type_str += std::to_string(Dim);
type_str += "d";
}
if(map_str.find(type_str) != map_str.end()){
return void_t{};
}
std::string str = "struct ";
str += type_str;
str += " {\n";
str += "\t" + inner_type_str + "* data;\n";
str += "\tsize_t size;\n";
if( Dim > 1 ){
str += "\tsize_t dims["+std::to_string(Dim)+"];\n";
}
str += "};\n";
map_str.insert(std::make_pair(std::move(type_str), std::move(str)));
return void_t{};
}
};
template<typename Interface>
struct c_rpc_translater {
static_assert(always_false<Interface>,"Not supported");
};
template<class Request, class Response>
struct c_rpc_translater<schema::Function<Request, Response>> {
using Map = std::map<std::string, std::string>;
static error_or<void> generate(const std::string& prefix, Map& type_map, Map& func_map){
return void_t{};
}
};
template<class... Requests, class... Responses, string_literal... Names>
struct c_rpc_translater<schema::Interface<schema::Member<schema::Function<Requests, Responses>, Names>...>> {
using Map = std::map<std::string, std::string>;
template<size_t i>
static error_or<void> generate_member(const std::string& prefix, Map& type_map, Map& func_map){
using Req = typename parameter_pack_type<i,Requests...>::type;
using Resp = typename parameter_pack_type<i,Responses...>::type;
constexpr string_literal lit = parameter_key_pack_type<i, Names...>::literal;
std::string func_name{lit.view()};
if(func_map.find(func_name) != func_map.end()){
return make_error<err::already_exists>();
}
{
std::string type_str;
auto eov = c_rpc_translater<schema::Function<Req, Resp>>::generate(prefix, type_map, func_map);
if(eov.is_error()){
return eov;
}
}
if constexpr ((i+1) < sizeof...(Requests) ){
return generate_member<i+1>(prefix, type_map, func_map);
}
return void_t{};
}
static error_or<void> generate(const std::string& prefix){
Map type_map, func_map;
if constexpr ( sizeof...(Requests) > 0 ){
return generate_member<0>(prefix, type_map, func_map);
}
return void_t{};
}
};
}
template<typename Interface>
error_or<std::string> generate_c_rpc_interface(){
std::stringstream iss;
auto eov = impl::c_rpc_translater<Interface>::generate(iss, "c_saw");
if(eov.is_error()){
return std::move(eov.get_error());
}
try {
return iss.str();
}catch(const std::exception& e){
// Do nothing for now
}
return make_error<err::out_of_memory>();
}
error_or<void> generate_array_example(){
using Schema = schema::Array<schema::Int32,2>;
using Schema2 = schema::Array<schema::Float64,5>;
using Schema3 = schema::Array<schema::UInt16,1>;
std::string prefix = "c_saw";
std::map<std::string,std::string> map_str;
{
std::string type_str;
auto eov = impl::c_data_translater<Schema>::generate(map_str, type_str, prefix);
if(eov.is_error()){
return eov;
}
}
{
std::string type_str;
auto eov = impl::c_data_translater<Schema2>::generate(map_str, type_str, prefix);
if(eov.is_error()){
return eov;
}
}
{
std::string type_str;
auto eov = impl::c_data_translater<Schema3>::generate(map_str, type_str, prefix);
if(eov.is_error()){
return eov;
}
}
std::cout<<"Prefix: "<<prefix<<std::endl;
for(auto& iter : map_str){
std::cout<<"\nType: \""<<iter.first<<"\""<<std::endl;
std::cout<<"Definition:\n\"\"\"\n";
std::cout<<iter.second;
std::cout<<"\"\"\""<<std::endl;
}
return void_t{};
}
}
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