upb/upb/bindings/lua/main.c

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/*
 * Copyright (c) 2009-2021, Google LLC
 * 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 Google LLC 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 Google LLC BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <lauxlib.h>
#include <lua.h>
#include <lualib.h>
#include <signal.h>
 
#include "upb/bindings/lua/upb.h"
 
lua_State* L;
 
static void interrupt(lua_State* L, lua_Debug* ar) {
  (void)ar;
  lua_sethook(L, NULL, 0, 0);
  luaL_error(L, "SIGINT");
}
 
static void sighandler(int i) {
  fprintf(stderr, "Signal!\n");
  signal(i, SIG_DFL);
  lua_sethook(L, interrupt, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
}
 
const char* init =
    "package.preload['lupb'] = ... "
    "package.path = '"
    "./?.lua;"
    "./third_party/lunit/?.lua;"
    "external/com_google_protobuf/?.lua;"
    "external/com_google_protobuf/src/?.lua;"
    "bazel-bin/?.lua;"
    "bazel-bin/external/com_google_protobuf/src/?.lua;"
    "bazel-bin/external/com_google_protobuf/?.lua;"
    "bazel-bin/external/com_google_protobuf/?.lua;"
    "upb/bindings/lua/?.lua"
    "'";
 
int main(int argc, char** argv) {
  int ret = 0;
  L = luaL_newstate();
  luaL_openlibs(L);
  lua_pushcfunction(L, luaopen_lupb);
  ret = luaL_loadstring(L, init);
  lua_pushcfunction(L, luaopen_lupb);
 
  signal(SIGINT, sighandler);
  ret = ret || lua_pcall(L, 1, LUA_MULTRET, 0) ||
        luaL_dofile(L, "upb/bindings/lua/test_upb.lua");
  signal(SIGINT, SIG_DFL);
 
  if (ret) {
    fprintf(stderr, "error testing Lua: %s\n", lua_tostring(L, -1));
    ret = 1;
  }
 
  lua_close(L);
  return ret;
}