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/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <unistd.h>
#include <cerrno>
#include <cstdio>
#include <filesystem>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <queue>
#include <regex>
#include <sstream>
#include <vector>
#include "declarations.h"
#include "struct_parser_generator.h"
#include "language_y.h"
int yylex_init(void**);
int yylex_destroy(void*);
void yyset_debug(int, void*);
void yyset_in(FILE*, void*);
bool generate_cpp_headers_one_file(
const Declarations& decls,
const std::filesystem::path& input_file,
const std::filesystem::path& include_dir,
const std::filesystem::path& out_dir,
const std::string& root_namespace);
bool generate_pybind11_sources_one_file(
const Declarations& decls,
const std::filesystem::path& input_file,
const std::filesystem::path& include_dir,
const std::filesystem::path& out_dir,
const std::string& root_namespace,
size_t num_shards);
bool generate_rust_source_one_file(
const Declarations& decls,
const std::filesystem::path& input_file,
const std::filesystem::path& include_dir,
const std::filesystem::path& out_dir,
const std::string& root_namespace);
bool parse_declarations_one_file(const std::filesystem::path& input_file, Declarations* declarations) {
void* scanner;
yylex_init(&scanner);
FILE* in_file = fopen(input_file.string().c_str(), "r");
if (in_file == nullptr) {
std::cerr << "can't open " << input_file << ": " << strerror(errno) << std::endl;
return false;
}
yyset_in(in_file, scanner);
int ret = yy::parser(scanner, declarations).parse();
if (ret != 0) {
std::cerr << "yylex parsing failed: returned " << ret << std::endl;
return false;
}
yylex_destroy(scanner);
fclose(in_file);
// Set endianess before returning
for (auto& s : declarations->type_defs_queue_) {
if (s.second->GetDefinitionType() == TypeDef::Type::STRUCT) {
auto* struct_def = static_cast<StructDef*>(s.second);
struct_def->SetEndianness(declarations->is_little_endian);
}
}
for (auto& packet_def : declarations->packet_defs_queue_) {
packet_def.second->SetEndianness(declarations->is_little_endian);
if (packet_def.second->parent_ != nullptr) {
packet_def.second->parent_->children_.push_back(packet_def.second);
}
}
return true;
}
// TODO(b/141583809): stop leaks
extern "C" const char* __asan_default_options() {
return "detect_leaks=0";
}
void usage(const char* prog) {
auto& ofs = std::cerr;
ofs << "Usage: " << prog << " [OPTIONS] file1 file2..." << std::endl;
ofs << std::setw(24) << "--out= ";
ofs << "Root directory for generated output (relative to cwd)." << std::endl;
ofs << std::setw(24) << "--include= ";
ofs << "Generate namespaces relative to this path per file." << std::endl;
ofs << std::setw(24) << "--root_namespace= ";
ofs << "Change root namespace (default = bluetooth)." << std::endl;
ofs << std::setw(24) << "--source_root= ";
ofs << "Root path to the source directory. Find input files relative to this." << std::endl;
ofs << std::setw(24) << "--num_shards= ";
ofs << "Number of shards per output pybind11 cc file." << std::endl;
}
int main(int argc, const char** argv) {
std::filesystem::path out_dir;
std::filesystem::path include_dir;
std::filesystem::path cwd = std::filesystem::current_path();
std::filesystem::path source_root = cwd;
std::string root_namespace = "bluetooth";
// Number of shards per output pybind11 cc file
size_t num_shards = 1;
bool generate_rust = false;
std::queue<std::filesystem::path> input_files;
const std::string arg_out = "--out=";
const std::string arg_include = "--include=";
const std::string arg_namespace = "--root_namespace=";
const std::string arg_num_shards = "--num_shards=";
const std::string arg_rust = "--rust";
const std::string arg_source_root = "--source_root=";
// Parse the source root first (if it exists) since it will be used for other
// paths.
for (int i = 1; i < argc; i++) {
std::string arg = argv[i];
if (arg.find(arg_source_root) == 0) {
source_root = std::filesystem::path(arg.substr(arg_source_root.size()));
}
}
for (int i = 1; i < argc; i++) {
std::string arg = argv[i];
if (arg.find(arg_out) == 0) {
out_dir = cwd / std::filesystem::path(arg.substr(arg_out.size()));
} else if (arg.find(arg_include) == 0) {
include_dir = source_root / std::filesystem::path(arg.substr(arg_include.size()));
} else if (arg.find(arg_namespace) == 0) {
root_namespace = arg.substr(arg_namespace.size());
} else if (arg.find(arg_num_shards) == 0) {
num_shards = std::stoul(arg.substr(arg_num_shards.size()));
} else if (arg.find(arg_rust) == 0) {
generate_rust = true;
} else if (arg.find(arg_source_root) == 0) {
// Do nothing (just don't treat it as input_files)
} else {
input_files.emplace(source_root / std::filesystem::path(arg));
}
}
if (out_dir == std::filesystem::path() || include_dir == std::filesystem::path() || num_shards == 0) {
usage(argv[0]);
return 1;
}
std::cout << "out dir: " << out_dir << std::endl;
while (!input_files.empty()) {
Declarations declarations;
std::cout << "parsing: " << input_files.front() << std::endl;
if (!parse_declarations_one_file(input_files.front(), &declarations)) {
std::cerr << "Cannot parse " << input_files.front() << " correctly" << std::endl;
return 2;
}
if (generate_rust) {
std::cout << "generating rust" << std::endl;
if (!generate_rust_source_one_file(declarations, input_files.front(), include_dir, out_dir, root_namespace)) {
std::cerr << "Didn't generate rust source for " << input_files.front() << std::endl;
return 5;
}
} else {
std::cout << "generating c++ and pybind11" << std::endl;
if (!generate_cpp_headers_one_file(declarations, input_files.front(), include_dir, out_dir, root_namespace)) {
std::cerr << "Didn't generate cpp headers for " << input_files.front() << std::endl;
return 3;
}
if (!generate_pybind11_sources_one_file(
declarations, input_files.front(), include_dir, out_dir, root_namespace, num_shards)) {
std::cerr << "Didn't generate pybind11 sources for " << input_files.front() << std::endl;
return 4;
}
}
input_files.pop();
}
return 0;
}
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