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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/tl/tl_config.h"
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <map>
#include <memory>
#include <string>
#include <vector>
namespace td {
namespace tl {
namespace simple {
// TL type is
std::string gen_cpp_name(std::string name) {
for (std::size_t i = 0; i < name.size(); i++) {
if ((name[i] < '0' || '9' < name[i]) && (name[i] < 'a' || 'z' < name[i]) && (name[i] < 'A' || 'Z' < name[i])) {
name[i] = '_';
}
}
assert(name.size() > 0);
assert(name[name.size() - 1] != '_');
return name;
}
std::string gen_cpp_field_name(std::string name) {
return gen_cpp_name(name) + "_";
}
struct CustomType;
struct Type {
enum { Int32, Int53, Int64, Double, String, Bytes, Vector, Bool, Custom } type;
// type == Custom
bool is_bare{false};
const CustomType *custom{nullptr};
// type == Vector
const Type *vector_value_type{nullptr};
}; // namespace simple
struct Arg {
const Type *type;
std::string name;
};
struct Constructor {
std::string name;
std::int32_t id;
std::vector<Arg> args;
const CustomType *type;
};
struct CustomType {
std::string name;
std::vector<const Constructor *> constructors;
};
struct Function {
std::string name;
std::int32_t id;
std::vector<Arg> args;
const Type *type;
};
class Schema {
public:
explicit Schema(const tl_config &config) {
config_ = &config;
for (std::size_t type_num = 0, type_count = config.get_type_count(); type_num < type_count; type_num++) {
auto *from_type = config.get_type_by_num(type_num);
if (from_type->name == "Vector") {
continue;
}
auto *type = get_type(from_type);
if (type->type == Type::Custom) {
custom_types.push_back(type->custom);
}
}
for (std::size_t function_num = 0, function_count = config.get_function_count(); function_num < function_count;
function_num++) {
auto *from_function = config.get_function_by_num(function_num);
functions.push_back(get_function(from_function));
}
}
std::vector<const CustomType *> custom_types;
std::vector<const Function *> functions;
private:
std::vector<std::unique_ptr<Function>> functions_;
std::vector<std::unique_ptr<Constructor>> constructors_;
std::vector<std::unique_ptr<CustomType>> custom_types_;
std::vector<std::unique_ptr<Type>> types_;
const tl_config *config_{nullptr};
std::map<std::int32_t, Type *> type_by_id;
std::map<std::int32_t, Constructor *> constructor_by_id;
std::map<std::int32_t, Function *> function_by_id;
const Type *get_type(const tl_type *from_type) {
auto &type = type_by_id[from_type->id];
if (!type) {
types_.push_back(std::make_unique<Type>());
type = types_.back().get();
if (from_type->name == "Int32") {
type->type = Type::Int32;
} else if (from_type->name == "Int53") {
type->type = Type::Int53;
} else if (from_type->name == "Int64") {
type->type = Type::Int64;
} else if (from_type->name == "Double") {
type->type = Type::Double;
} else if (from_type->name == "String") {
type->type = Type::String;
} else if (from_type->name == "Bytes") {
type->type = Type::Bytes;
} else if (from_type->name == "Bool") {
type->type = Type::Bool;
} else if (from_type->name == "Vector") {
assert(false); // unreachable
} else {
type->type = Type::Custom;
custom_types_.push_back(std::make_unique<CustomType>());
auto *custom_type = custom_types_.back().get();
type->custom = custom_type;
custom_type->name = from_type->name;
for (auto *constructor : from_type->constructors) {
custom_type->constructors.push_back(get_constructor(constructor));
}
}
}
return type;
}
const CustomType *get_custom_type(const tl_type *from_type) {
auto *type = get_type(from_type);
assert(type->type == Type::Custom);
return type->custom;
}
const Constructor *get_constructor(const tl_combinator *from) {
auto &constructor = constructor_by_id[from->id];
if (!constructor) {
constructors_.push_back(std::make_unique<Constructor>());
constructor = constructors_.back().get();
constructor->id = from->id;
constructor->name = from->name;
constructor->type = get_custom_type(config_->get_type(from->type_id));
for (auto &from_arg : from->args) {
Arg arg;
arg.name = from_arg.name;
arg.type = get_type(from_arg.type);
constructor->args.push_back(std::move(arg));
}
}
return constructor;
}
const Function *get_function(const tl_combinator *from) {
auto &function = function_by_id[from->id];
if (!function) {
functions_.push_back(std::make_unique<Function>());
function = functions_.back().get();
function->id = from->id;
function->name = from->name;
function->type = get_type(config_->get_type(from->type_id));
for (auto &from_arg : from->args) {
Arg arg;
arg.name = from_arg.name;
arg.type = get_type(from_arg.type);
function->args.push_back(std::move(arg));
}
}
return function;
}
const Type *get_type(const tl_tree *tree) {
assert(tree->get_type() == NODE_TYPE_TYPE);
auto *type_tree = static_cast<const tl_tree_type *>(tree);
if (type_tree->type->name == "Vector") {
assert(type_tree->children.size() == 1);
types_.push_back(std::make_unique<Type>());
auto *type = types_.back().get();
type->type = Type::Vector;
type->vector_value_type = get_type(type_tree->children[0]);
return type;
} else {
assert(type_tree->children.empty());
return get_type(type_tree->type);
}
}
};
} // namespace simple
} // namespace tl
} // namespace td
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