7262987147

Committed 19 Dec 2023 02:10PM UTC coverage: 88.225% (-0.4%) from 88.616%

Build # 7262987147

Build Type

push

github

Committed by

fckxorg

Commit Message

test: add tests for debugging extensions

This patch adds tests for LuaJIT debugging
extensions for lldb and gdb.

Run Details

5336 of 5969 branches covered (0.0%)

Branch coverage included in aggregate %.

20475 of 23287 relevant lines covered (87.92%)

1285545.26 hits per line

Source File
Press 'n' to go to next uncovered line, 'b' for previous

93.33

/src/luajit.c

/*
** LuaJIT frontend. Runs commands, scripts, read-eval-print (REPL) etc.
** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h
**
** Major portions taken verbatim or adapted from the Lua interpreter.
** Copyright (C) 1994-2008 Lua.org, PUC-Rio. See Copyright Notice in lua.h
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define luajit_c

#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#include "luajit.h"

#include "lj_arch.h"

#if LJ_TARGET_POSIX
#include <unistd.h>
#define lua_stdin_is_tty()        isatty(0)
#elif LJ_TARGET_WINDOWS
#include <io.h>
#ifdef __BORLANDC__
#define lua_stdin_is_tty()        isatty(_fileno(stdin))
#else
#define lua_stdin_is_tty()        _isatty(_fileno(stdin))
#endif
#else
#define lua_stdin_is_tty()        1
#endif

#if !LJ_TARGET_CONSOLE
#include <signal.h>
#endif

static lua_State *globalL = NULL;
static const char *progname = LUA_PROGNAME;

#if !LJ_TARGET_CONSOLE
static void lstop(lua_State *L, lua_Debug *ar)
{
  (void)ar;  /* unused arg. */
  lua_sethook(L, NULL, 0, 0);
  /* Avoid luaL_error -- a C hook doesn't add an extra frame. */
  luaL_where(L, 0);
  lua_pushfstring(L, "%sinterrupted!", lua_tostring(L, -1));
  lua_error(L);
}

static void laction(int i)
{
  signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
                         terminate process (default action) */
  lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
}
#endif

static void print_usage(void)
{
  fputs("usage: ", stderr);
  fputs(progname, stderr);
  fputs(" [options]... [script [args]...].\n"
  "Available options are:\n"
  "  -e chunk  Execute string " LUA_QL("chunk") ".\n"
  "  -l name   Require library " LUA_QL("name") ".\n"
  "  -b ...    Save or list bytecode.\n"
  "  -j cmd    Perform LuaJIT control command.\n"
  "  -O[opt]   Control LuaJIT optimizations.\n"
  "  -i        Enter interactive mode after executing " LUA_QL("script") ".\n"
  "  -v        Show version information.\n"
  "  -E        Ignore environment variables.\n"
  "  --        Stop handling options.\n"
  "  -         Execute stdin and stop handling options.\n", stderr);
  fflush(stderr);
}

static void l_message(const char *pname, const char *msg)
{
  if (pname) { fputs(pname, stderr); fputc(':', stderr); fputc(' ', stderr); }
  fputs(msg, stderr); fputc('\n', stderr);
  fflush(stderr);
}

static int report(lua_State *L, int status)
{
  if (status && !lua_isnil(L, -1)) {
    const char *msg = lua_tostring(L, -1);
    if (msg == NULL) msg = "(error object is not a string)";
    l_message(progname, msg);
    lua_pop(L, 1);
  }
  return status;
}

static int traceback(lua_State *L)
{
  if (!lua_isstring(L, 1)) { /* Non-string error object? Try metamethod. */
    if (lua_isnoneornil(L, 1) ||
        !luaL_callmeta(L, 1, "__tostring") ||
        !lua_isstring(L, -1))
      return 1;  /* Return non-string error object. */
    lua_remove(L, 1);  /* Replace object by result of __tostring metamethod. */
  }
  luaL_traceback(L, L, lua_tostring(L, 1), 1);
  return 1;
}

static int docall(lua_State *L, int narg, int clear)
{
  int status;
  int base = lua_gettop(L) - narg;  /* function index */
  lua_pushcfunction(L, traceback);  /* push traceback function */
  lua_insert(L, base);  /* put it under chunk and args */
#if !LJ_TARGET_CONSOLE
  signal(SIGINT, laction);
#endif
  status = lua_pcall(L, narg, (clear ? 0 : LUA_MULTRET), base);
#if !LJ_TARGET_CONSOLE
  signal(SIGINT, SIG_DFL);
#endif
  lua_remove(L, base);  /* remove traceback function */
  /* force a complete garbage collection in case of errors */
  if (status != LUA_OK) lua_gc(L, LUA_GCCOLLECT, 0);
  return status;
}

static void print_version(void)
{
  fputs(LUAJIT_VERSION " -- " LUAJIT_COPYRIGHT ". " LUAJIT_URL "\n", stdout);
}

static void print_jit_status(lua_State *L)
{
  int n;
  const char *s;
  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
  lua_getfield(L, -1, "jit");  /* Get jit.* module table. */
  lua_remove(L, -2);
  lua_getfield(L, -1, "status");
  lua_remove(L, -2);
  n = lua_gettop(L);
  lua_call(L, 0, LUA_MULTRET);
  fputs(lua_toboolean(L, n) ? "JIT: ON" : "JIT: OFF", stdout);
  for (n++; (s = lua_tostring(L, n)); n++) {
    putc(' ', stdout);
    fputs(s, stdout);
  }
  putc('\n', stdout);
}

static void createargtable(lua_State *L, char **argv, int argc, int argf)
{
  int i;
  lua_createtable(L, argc - argf, argf);
  for (i = 0; i < argc; i++) {
    lua_pushstring(L, argv[i]);
    lua_rawseti(L, -2, i - argf);
  }
  lua_setglobal(L, "arg");
}

static int dofile(lua_State *L, const char *name)
{
  int status = luaL_loadfile(L, name) || docall(L, 0, 1);
  return report(L, status);
}

static int dostring(lua_State *L, const char *s, const char *name)
{
  int status = luaL_loadbuffer(L, s, strlen(s), name) || docall(L, 0, 1);
  return report(L, status);
}

static int dolibrary(lua_State *L, const char *name)
{
  lua_getglobal(L, "require");
  lua_pushstring(L, name);
  return report(L, docall(L, 1, 1));
}

static void write_prompt(lua_State *L, int firstline)
{
  const char *p;
  lua_getfield(L, LUA_GLOBALSINDEX, firstline ? "_PROMPT" : "_PROMPT2");
  p = lua_tostring(L, -1);
  if (p == NULL) p = firstline ? LUA_PROMPT : LUA_PROMPT2;
  fputs(p, stdout);
  fflush(stdout);
  lua_pop(L, 1);  /* remove global */
}

static int incomplete(lua_State *L, int status)
{
  if (status == LUA_ERRSYNTAX) {
    size_t lmsg;
    const char *msg = lua_tolstring(L, -1, &lmsg);
    const char *tp = msg + lmsg - (sizeof(LUA_QL("<eof>")) - 1);
    if (strstr(msg, LUA_QL("<eof>")) == tp) {
      lua_pop(L, 1);
      return 1;
    }
  }
  return 0;  /* else... */
}

static int pushline(lua_State *L, int firstline)
{
  char buf[LUA_MAXINPUT];
  write_prompt(L, firstline);
  if (fgets(buf, LUA_MAXINPUT, stdin)) {
    size_t len = strlen(buf);
    if (len > 0 && buf[len-1] == '\n')
      buf[len-1] = '\0';
    if (firstline && buf[0] == '=')
      lua_pushfstring(L, "return %s", buf+1);
    else
      lua_pushstring(L, buf);
    return 1;
  }
  return 0;
}

static int loadline(lua_State *L)
{
  int status;
  lua_settop(L, 0);
  if (!pushline(L, 1))
    return -1;  /* no input */
  for (;;) {  /* repeat until gets a complete line */
    status = luaL_loadbuffer(L, lua_tostring(L, 1), lua_strlen(L, 1), "=stdin");
    if (!incomplete(L, status)) break;  /* cannot try to add lines? */
    if (!pushline(L, 0))  /* no more input? */
      return -1;
    lua_pushliteral(L, "\n");  /* add a new line... */
    lua_insert(L, -2);  /* ...between the two lines */
    lua_concat(L, 3);  /* join them */
  }
  lua_remove(L, 1);  /* remove line */
  return status;
}

static void dotty(lua_State *L)
{
  int status;
  const char *oldprogname = progname;
  progname = NULL;
  while ((status = loadline(L)) != -1) {
    if (status == LUA_OK) status = docall(L, 0, 0);
    report(L, status);
    if (status == LUA_OK && lua_gettop(L) > 0) {  /* any result to print? */
      lua_getglobal(L, "print");
      lua_insert(L, 1);
      if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != 0)
        l_message(progname,
          lua_pushfstring(L, "error calling " LUA_QL("print") " (%s)",
                              lua_tostring(L, -1)));
    }
  }
  lua_settop(L, 0);  /* clear stack */
  fputs("\n", stdout);
  fflush(stdout);
  progname = oldprogname;
}

static int handle_script(lua_State *L, char **argx)
{
  int status;
  const char *fname = argx[0];
  if (strcmp(fname, "-") == 0 && strcmp(argx[-1], "--") != 0)
    fname = NULL;  /* stdin */
  status = luaL_loadfile(L, fname);
  if (status == LUA_OK) {
    /* Fetch args from arg table. LUA_INIT or -e might have changed them. */
    int narg = 0;
    lua_getglobal(L, "arg");
    if (lua_istable(L, -1)) {
      do {
        narg++;
        lua_rawgeti(L, -narg, narg);
      } while (!lua_isnil(L, -1));
      lua_pop(L, 1);
      lua_remove(L, -narg);
      narg--;
    } else {
      lua_pop(L, 1);
    }
    status = docall(L, narg, 0);
  }
  return report(L, status);
}

/* Load add-on module. */
static int loadjitmodule(lua_State *L)
{
  lua_getglobal(L, "require");
  lua_pushliteral(L, "jit.");
  lua_pushvalue(L, -3);
  lua_concat(L, 2);
  if (lua_pcall(L, 1, 1, 0)) {
    const char *msg = lua_tostring(L, -1);
    if (msg && !strncmp(msg, "module ", 7))
      goto nomodule;
    return report(L, 1);
  }
  lua_getfield(L, -1, "start");
  if (lua_isnil(L, -1)) {
  nomodule:
    l_message(progname,
              "unknown luaJIT command or jit.* modules not installed");
    return 1;
  }
  lua_remove(L, -2);  /* Drop module table. */
  return 0;
}

/* Run command with options. */
static int runcmdopt(lua_State *L, const char *opt)
{
  int narg = 0;
  if (opt && *opt) {
    for (;;) {  /* Split arguments. */
      const char *p = strchr(opt, ',');
      narg++;
      if (!p) break;
      if (p == opt)
        lua_pushnil(L);
      else
        lua_pushlstring(L, opt, (size_t)(p - opt));
      opt = p + 1;
    }
    if (*opt)
      lua_pushstring(L, opt);
    else
      lua_pushnil(L);
  }
  return report(L, lua_pcall(L, narg, 0, 0));
}

/* JIT engine control command: try jit library first or load add-on module. */
static int dojitcmd(lua_State *L, const char *cmd)
{
  const char *opt = strchr(cmd, '=');
  lua_pushlstring(L, cmd, opt ? (size_t)(opt - cmd) : strlen(cmd));
  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
  lua_getfield(L, -1, "jit");  /* Get jit.* module table. */
  lua_remove(L, -2);
  lua_pushvalue(L, -2);
  lua_gettable(L, -2);  /* Lookup library function. */
  if (!lua_isfunction(L, -1)) {
    lua_pop(L, 2);  /* Drop non-function and jit.* table, keep module name. */
    if (loadjitmodule(L))
      return 1;
  } else {
    lua_remove(L, -2);  /* Drop jit.* table. */
  }
  lua_remove(L, -2);  /* Drop module name. */
  return runcmdopt(L, opt ? opt+1 : opt);
}

/* Optimization flags. */
static int dojitopt(lua_State *L, const char *opt)
{
  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
  lua_getfield(L, -1, "jit.opt");  /* Get jit.opt.* module table. */
  lua_remove(L, -2);
  lua_getfield(L, -1, "start");
  lua_remove(L, -2);
  return runcmdopt(L, opt);
}

/* Save or list bytecode. */
static int dobytecode(lua_State *L, char **argv)
{
  int narg = 0;
  lua_pushliteral(L, "bcsave");
  if (loadjitmodule(L))
    return 1;
  if (argv[0][2]) {
    narg++;
    argv[0][1] = '-';
    lua_pushstring(L, argv[0]+1);
  }
  for (argv++; *argv != NULL; narg++, argv++)
    lua_pushstring(L, *argv);
  report(L, lua_pcall(L, narg, 0, 0));
  return -1;
}

/* check that argument has no extra characters at the end */
#define notail(x)        {if ((x)[2] != '\0') return -1;}

#define FLAGS_INTERACTIVE        1
#define FLAGS_VERSION                2
#define FLAGS_EXEC                4
#define FLAGS_OPTION                8
#define FLAGS_NOENV                16

static int collectargs(char **argv, int *flags)
{
  int i;
  for (i = 1; argv[i] != NULL; i++) {
    if (argv[i][0] != '-')  /* Not an option? */
      return i;
    switch (argv[i][1]) {  /* Check option. */
    case '-':
      notail(argv[i]);
      return i+1;
    case '\0':
      return i;
    case 'i':
      notail(argv[i]);
      *flags |= FLAGS_INTERACTIVE;
      /* fallthrough */
    case 'v':
      notail(argv[i]);
      *flags |= FLAGS_VERSION;
      break;
    case 'e':
      *flags |= FLAGS_EXEC;
      /* fallthrough */
    case 'j':  /* LuaJIT extension */
    case 'l':
      *flags |= FLAGS_OPTION;
      if (argv[i][2] == '\0') {
        i++;
        if (argv[i] == NULL) return -1;
      }
      break;
    case 'O': break;  /* LuaJIT extension */
    case 'b':  /* LuaJIT extension */
      if (*flags) return -1;
      *flags |= FLAGS_EXEC;
      return i+1;
    case 'E':
      *flags |= FLAGS_NOENV;
      break;
    default: return -1;  /* invalid option */
    }
  }
  return i;
}

static int runargs(lua_State *L, char **argv, int argn)
{
  int i;
  for (i = 1; i < argn; i++) {
    if (argv[i] == NULL) continue;
    lua_assert(argv[i][0] == '-');
    switch (argv[i][1]) {
    case 'e': {
      const char *chunk = argv[i] + 2;
      if (*chunk == '\0') chunk = argv[++i];
      lua_assert(chunk != NULL);
      if (dostring(L, chunk, "=(command line)") != 0)
        return 1;
      break;
      }
    case 'l': {
      const char *filename = argv[i] + 2;
      if (*filename == '\0') filename = argv[++i];
      lua_assert(filename != NULL);
      if (dolibrary(L, filename))
        return 1;
      break;
      }
    case 'j': {  /* LuaJIT extension. */
      const char *cmd = argv[i] + 2;
      if (*cmd == '\0') cmd = argv[++i];
      lua_assert(cmd != NULL);
      if (dojitcmd(L, cmd))
        return 1;
      break;
      }
    case 'O':  /* LuaJIT extension. */
      if (dojitopt(L, argv[i] + 2))
        return 1;
      break;
    case 'b':  /* LuaJIT extension. */
      return dobytecode(L, argv+i);
    default: break;
    }
  }
  return LUA_OK;
}

static int handle_luainit(lua_State *L)
{
#if LJ_TARGET_CONSOLE
  const char *init = NULL;
#else
  const char *init = getenv(LUA_INIT);
#endif
  if (init == NULL)
    return LUA_OK;
  else if (init[0] == '@')
    return dofile(L, init+1);
  else
    return dostring(L, init, "=" LUA_INIT);
}

static struct Smain {
  char **argv;
  int argc;
  int status;
} smain;

static int pmain(lua_State *L)
{
  struct Smain *s = &smain;
  char **argv = s->argv;
  int argn;
  int flags = 0;
  globalL = L;
  if (argv[0] && argv[0][0]) progname = argv[0];

  LUAJIT_VERSION_SYM();  /* Linker-enforced version check. */

  argn = collectargs(argv, &flags);
  if (argn < 0) {  /* Invalid args? */
    print_usage();
    s->status = 1;
    return 0;
  }

  if ((flags & FLAGS_NOENV)) {
    lua_pushboolean(L, 1);
    lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
  }

  /* Stop collector during library initialization. */
  lua_gc(L, LUA_GCSTOP, 0);
  luaL_openlibs(L);
  lua_gc(L, LUA_GCRESTART, -1);

  createargtable(L, argv, s->argc, argn);

  if (!(flags & FLAGS_NOENV)) {
    s->status = handle_luainit(L);
    if (s->status != LUA_OK) return 0;
  }

  if ((flags & FLAGS_VERSION)) print_version();

  s->status = runargs(L, argv, argn);
  if (s->status != LUA_OK) return 0;

  if (s->argc > argn) {
    s->status = handle_script(L, argv + argn);
    if (s->status != LUA_OK) return 0;
  }

  if ((flags & FLAGS_INTERACTIVE)) {
    print_jit_status(L);
    dotty(L);
  } else if (s->argc == argn && !(flags & (FLAGS_EXEC|FLAGS_VERSION))) {
    if (lua_stdin_is_tty()) {
      print_version();
      print_jit_status(L);
      dotty(L);
    } else {
      dofile(L, NULL);  /* Executes stdin as a file. */
    }
  }
  return 0;
}

int main(int argc, char **argv)
{
  int status;
  lua_State *L = lua_open();
  if (L == NULL) {
    l_message(argv[0], "cannot create state: not enough memory");
    return EXIT_FAILURE;
  }
  smain.argc = argc;
  smain.argv = argv;
  status = lua_cpcall(L, pmain, NULL);
  report(L, status);
  lua_close(L);
  return (status || smain.status > 0) ? EXIT_FAILURE : EXIT_SUCCESS;
}


1	/*
2	** LuaJIT frontend. Runs commands, scripts, read-eval-print (REPL) etc.
3	** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h
4	**
5	** Major portions taken verbatim or adapted from the Lua interpreter.
6	** Copyright (C) 1994-2008 Lua.org, PUC-Rio. See Copyright Notice in lua.h
7	*/
8
9	#include <stdio.h>
10	#include <stdlib.h>
11	#include <string.h>
12
13	#define luajit_c
14
15	#include "lua.h"
16	#include "lauxlib.h"
17	#include "lualib.h"
18	#include "luajit.h"
19
20	#include "lj_arch.h"
21
22	#if LJ_TARGET_POSIX
23	#include <unistd.h>
24	#define lua_stdin_is_tty() isatty(0)
25	#elif LJ_TARGET_WINDOWS
26	#include <io.h>
27	#ifdef __BORLANDC__
28	#define lua_stdin_is_tty() isatty(_fileno(stdin))
29	#else
30	#define lua_stdin_is_tty() _isatty(_fileno(stdin))
31	#endif
32	#else
33	#define lua_stdin_is_tty() 1
34	#endif
35
36	#if !LJ_TARGET_CONSOLE
37	#include <signal.h>
38	#endif
39
40	static lua_State *globalL = NULL;
41	static const char *progname = LUA_PROGNAME;
42
43	#if !LJ_TARGET_CONSOLE
44	static void lstop(lua_State L, lua_Debug ar)	×
45	{
46	(void)ar; /* unused arg. */	×
47	lua_sethook(L, NULL, 0, 0);	×
48	/* Avoid luaL_error -- a C hook doesn't add an extra frame. */
49	luaL_where(L, 0);	×
50	lua_pushfstring(L, "%sinterrupted!", lua_tostring(L, -1));	×
51	lua_error(L);	×
52	}	×
53
54	static void laction(int i)	×
55	{
56	signal(i, SIG_DFL); /* if another SIGINT happens before lstop,	×
57	terminate process (default action) */
58	lua_sethook(globalL, lstop, LUA_MASKCALL \| LUA_MASKRET \| LUA_MASKCOUNT, 1);	×
59	}	×
60	#endif
61
62	static void print_usage(void)	5✔
63	{
64	fputs("usage: ", stderr);	5✔
65	fputs(progname, stderr);	5✔
66	fputs(" [options]... [script [args]...].\n"	5✔
67	"Available options are:\n"
68	" -e chunk Execute string " LUA_QL("chunk") ".\n"
69	" -l name Require library " LUA_QL("name") ".\n"
70	" -b ... Save or list bytecode.\n"
71	" -j cmd Perform LuaJIT control command.\n"
72	" -O[opt] Control LuaJIT optimizations.\n"
73	" -i Enter interactive mode after executing " LUA_QL("script") ".\n"
74	" -v Show version information.\n"
75	" -E Ignore environment variables.\n"
76	" -- Stop handling options.\n"
77	" - Execute stdin and stop handling options.\n", stderr);
78	fflush(stderr);	5✔
79	}	5✔
80
81	static void l_message(const char pname, const char msg)	6✔
82	{
83	if (pname) { fputs(pname, stderr); fputc(':', stderr); fputc(' ', stderr); }	6✔
84	fputs(msg, stderr); fputc('\n', stderr);	6✔
85	fflush(stderr);	6✔
86	}	6✔
87
88	static int report(lua_State *L, int status)	502✔
89	{
90	if (status && !lua_isnil(L, -1)) {	502✔
91	const char *msg = lua_tostring(L, -1);	5✔
92	if (msg == NULL) msg = "(error object is not a string)";	5✔
93	l_message(progname, msg);	5✔
94	lua_pop(L, 1);	5✔
95	}
96	return status;	502✔
97	}
98
99	static int traceback(lua_State *L)	3✔
100	{
101	if (!lua_isstring(L, 1)) { /* Non-string error object? Try metamethod. */	3✔
102	if (lua_isnoneornil(L, 1) \|\|	2✔
103	!luaL_callmeta(L, 1, "__tostring") \|\|	1✔
104	!lua_isstring(L, -1))	×
105	return 1; /* Return non-string error object. */	1✔
106	lua_remove(L, 1); /* Replace object by result of __tostring metamethod. */	×
107	}
108	luaL_traceback(L, L, lua_tostring(L, 1), 1);	2✔
109	return 1;	2✔
110	}
111
112	static int docall(lua_State *L, int narg, int clear)	450✔
113	{
114	int status;	450✔
115	int base = lua_gettop(L) - narg; /* function index */	450✔
116	lua_pushcfunction(L, traceback); /* push traceback function */	450✔
117	lua_insert(L, base); /* put it under chunk and args */	450✔
118	#if !LJ_TARGET_CONSOLE
119	signal(SIGINT, laction);	450✔
120	#endif
121	status = lua_pcall(L, narg, (clear ? 0 : LUA_MULTRET), base);	652✔
122	#if !LJ_TARGET_CONSOLE
123	signal(SIGINT, SIG_DFL);	349✔
124	#endif
125	lua_remove(L, base); /* remove traceback function */	349✔
126	/* force a complete garbage collection in case of errors */
127	if (status != LUA_OK) lua_gc(L, LUA_GCCOLLECT, 0);	349✔
128	return status;	349✔
129	}
130
131	static void print_version(void)	8✔
132	{
133	fputs(LUAJIT_VERSION " -- " LUAJIT_COPYRIGHT ". " LUAJIT_URL "\n", stdout);	8✔
134	}	8✔
135
136	static void print_jit_status(lua_State *L)	4✔
137	{
138	int n;	4✔
139	const char *s;	4✔
140	lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");	4✔
141	lua_getfield(L, -1, "jit"); /* Get jit.* module table. */	4✔
142	lua_remove(L, -2);	4✔
143	lua_getfield(L, -1, "status");	4✔
144	lua_remove(L, -2);	4✔
145	n = lua_gettop(L);	4✔
146	lua_call(L, 0, LUA_MULTRET);	4✔
147	fputs(lua_toboolean(L, n) ? "JIT: ON" : "JIT: OFF", stdout);	4✔
148	for (n++; (s = lua_tostring(L, n)); n++) {	60✔
149	putc(' ', stdout);	56✔
150	fputs(s, stdout);	56✔
151	}
152	putc('\n', stdout);	4✔
153	}	4✔
154
155	static void createargtable(lua_State L, char *argv, int argc, int argf)	227✔
156	{
157	int i;	227✔
158	lua_createtable(L, argc - argf, argf);	227✔
159	for (i = 0; i < argc; i++) {	1,466✔
160	lua_pushstring(L, argv[i]);	1,012✔
161	lua_rawseti(L, -2, i - argf);	1,012✔
162	}
163	lua_setglobal(L, "arg");	227✔
164	}	227✔
165
166	static int dofile(lua_State L, const char name)	1✔
167	{
168	int status = luaL_loadfile(L, name) \|\| docall(L, 0, 1);	1✔
169	return report(L, status);	1✔
170	}
171
172	static int dostring(lua_State L, const char s, const char *name)	192✔
173	{
174	int status = luaL_loadbuffer(L, s, strlen(s), name) \|\| docall(L, 0, 1);	192✔
175	return report(L, status);	189✔
176	}
177
178	static int dolibrary(lua_State L, const char name)	57✔
179	{
180	lua_getglobal(L, "require");	57✔
181	lua_pushstring(L, name);	57✔
182	return report(L, docall(L, 1, 1));	57✔
183	}
184
185	static void write_prompt(lua_State *L, int firstline)	131✔
186	{
187	const char *p;	131✔
188	lua_getfield(L, LUA_GLOBALSINDEX, firstline ? "_PROMPT" : "_PROMPT2");	240✔
189	p = lua_tostring(L, -1);	131✔
190	if (p == NULL) p = firstline ? LUA_PROMPT : LUA_PROMPT2;	131✔
191	fputs(p, stdout);	131✔
192	fflush(stdout);	131✔
193	lua_pop(L, 1); /* remove global */	131✔
194	}	131✔
195
196	static int incomplete(lua_State *L, int status)	127✔
197	{
198	if (status == LUA_ERRSYNTAX) {	127✔
199	size_t lmsg;	109✔
200	const char *msg = lua_tolstring(L, -1, &lmsg);	109✔
201	const char *tp = msg + lmsg - (sizeof(LUA_QL("<eof>")) - 1);	109✔
202	if (strstr(msg, LUA_QL("<eof>")) == tp) {	109✔
203	lua_pop(L, 1);	109✔
204	return 1;	109✔
205	}
206	}
207	return 0; /* else... */
208	}
209
210	static int pushline(lua_State *L, int firstline)	131✔
211	{
212	char buf[LUA_MAXINPUT];	131✔
213	write_prompt(L, firstline);	131✔
214	if (fgets(buf, LUA_MAXINPUT, stdin)) {	131✔
215	size_t len = strlen(buf);	127✔
216	if (len > 0 && buf[len-1] == '\n')	127✔
217	buf[len-1] = '\0';	125✔
218	if (firstline && buf[0] == '=')	127✔
219	lua_pushfstring(L, "return %s", buf+1);	5✔
220	else
221	lua_pushstring(L, buf);	122✔
222	return 1;	127✔
223	}
224	return 0;
225	}
226
227	static int loadline(lua_State *L)	22✔
228	{
229	int status;	22✔
230	lua_settop(L, 0);	22✔
231	if (!pushline(L, 1))	22✔
232	return -1; /* no input */
233	for (;;) { /* repeat until gets a complete line */	236✔
234	status = luaL_loadbuffer(L, lua_tostring(L, 1), lua_strlen(L, 1), "=stdin");	127✔
235	if (!incomplete(L, status)) break; /* cannot try to add lines? */	127✔
236	if (!pushline(L, 0)) /* no more input? */	109✔
237	return -1;
238	lua_pushliteral(L, "\n"); /* add a new line... */	109✔
239	lua_insert(L, -2); /* ...between the two lines */	109✔
240	lua_concat(L, 3); /* join them */	109✔
241	}
242	lua_remove(L, 1); /* remove line */	18✔
243	return status;	18✔
244	}
245
246	static void dotty(lua_State *L)	4✔
247	{
248	int status;	4✔
249	const char *oldprogname = progname;	4✔
250	progname = NULL;	4✔
251	while ((status = loadline(L)) != -1) {	26✔
252	if (status == LUA_OK) status = docall(L, 0, 0);	18✔
253	report(L, status);	18✔
254	if (status == LUA_OK && lua_gettop(L) > 0) { /* any result to print? */	18✔
255	lua_getglobal(L, "print");	5✔
256	lua_insert(L, 1);	5✔
257	if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != 0)	5✔
258	l_message(progname,	×
259	lua_pushfstring(L, "error calling " LUA_QL("print") " (%s)",
260	lua_tostring(L, -1)));
261	}
262	}
263	lua_settop(L, 0); /* clear stack */	4✔
264	fputs("\n", stdout);	4✔
265	fflush(stdout);	4✔
266	progname = oldprogname;	4✔
267	}	4✔
268
269	static int handle_script(lua_State L, char *argx)	185✔
270	{
271	int status;	185✔
272	const char *fname = argx[0];	185✔
273	if (strcmp(fname, "-") == 0 && strcmp(argx[-1], "--") != 0)	185✔
274	fname = NULL; /* stdin */	4✔
275	status = luaL_loadfile(L, fname);	185✔
276	if (status == LUA_OK) {	185✔
277	/* Fetch args from arg table. LUA_INIT or -e might have changed them. */
278	int narg = 0;	184✔
279	lua_getglobal(L, "arg");	184✔
280	if (lua_istable(L, -1)) {	184✔
281	do {	243✔
282	narg++;	243✔
283	lua_rawgeti(L, -narg, narg);	243✔
284	} while (!lua_isnil(L, -1));	243✔
285	lua_pop(L, 1);	184✔
286	lua_remove(L, -narg);	184✔
287	narg--;	184✔
288	} else {
289	lua_pop(L, 1);	×
290	}
291	status = docall(L, narg, 0);	184✔
292	}
293	return report(L, status);	87✔
294	}
295
296	/* Load add-on module. */
297	static int loadjitmodule(lua_State *L)	10✔
298	{
299	lua_getglobal(L, "require");	10✔
300	lua_pushliteral(L, "jit.");	10✔
301	lua_pushvalue(L, -3);	10✔
302	lua_concat(L, 2);	10✔
303	if (lua_pcall(L, 1, 1, 0)) {	10✔
304	const char *msg = lua_tostring(L, -1);	1✔
305	if (msg && !strncmp(msg, "module ", 7))	1✔
306	goto nomodule;	1✔
307	return report(L, 1);	×
308	}
309	lua_getfield(L, -1, "start");	9✔
310	if (lua_isnil(L, -1)) {	9✔
311	nomodule:	×
312	l_message(progname,	1✔
313	"unknown luaJIT command or jit.* modules not installed");
314	return 1;	1✔
315	}
316	lua_remove(L, -2); /* Drop module table. */	9✔
317	return 0;	9✔
318	}
319
320	/* Run command with options. */
321	static int runcmdopt(lua_State L, const char opt)	10✔
322	{
323	int narg = 0;	10✔
324	if (opt && *opt) {	10✔
325	for (;;) { /* Split arguments. */	10✔
326	const char *p = strchr(opt, ',');	8✔
327	narg++;	8✔
328	if (!p) break;	8✔
329	if (p == opt)	2✔
330	lua_pushnil(L);	×
331	else
332	lua_pushlstring(L, opt, (size_t)(p - opt));	2✔
333	opt = p + 1;	2✔
334	}
335	if (*opt)	6✔
336	lua_pushstring(L, opt);	6✔
337	else
338	lua_pushnil(L);	×
339	}
340	return report(L, lua_pcall(L, narg, 0, 0));	10✔
341	}
342
343	/* JIT engine control command: try jit library first or load add-on module. */
344	static int dojitcmd(lua_State L, const char cmd)	4✔
345	{
346	const char *opt = strchr(cmd, '=');	4✔
347	lua_pushlstring(L, cmd, opt ? (size_t)(opt - cmd) : strlen(cmd));	4✔
348	lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");	4✔
349	lua_getfield(L, -1, "jit"); /* Get jit.* module table. */	4✔
350	lua_remove(L, -2);	4✔
351	lua_pushvalue(L, -2);	4✔
352	lua_gettable(L, -2); /* Lookup library function. */	4✔
353	if (!lua_isfunction(L, -1)) {	4✔
354	lua_pop(L, 2); /* Drop non-function and jit.* table, keep module name. */	1✔
355	if (loadjitmodule(L))	1✔
356	return 1;
357	} else {
358	lua_remove(L, -2); /* Drop jit.* table. */	3✔
359	}
360	lua_remove(L, -2); /* Drop module name. */	3✔
361	return runcmdopt(L, opt ? opt+1 : opt);	3✔
362	}
363
364	/* Optimization flags. */
365	static int dojitopt(lua_State L, const char opt)	7✔
366	{
367	lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");	7✔
368	lua_getfield(L, -1, "jit.opt"); /* Get jit.opt.* module table. */	7✔
369	lua_remove(L, -2);	7✔
370	lua_getfield(L, -1, "start");	7✔
371	lua_remove(L, -2);	7✔
372	return runcmdopt(L, opt);	7✔
373	}
374
375	/* Save or list bytecode. */
376	static int dobytecode(lua_State L, char *argv)	9✔
377	{
378	int narg = 0;	9✔
379	lua_pushliteral(L, "bcsave");	9✔
380	if (loadjitmodule(L))	9✔
381	return 1;
382	if (argv[0][2]) {	9✔
383	narg++;	4✔
384	argv[0][1] = '-';	4✔
385	lua_pushstring(L, argv[0]+1);	4✔
386	}
387	for (argv++; *argv != NULL; narg++, argv++)	29✔
388	lua_pushstring(L, *argv);	20✔
389	report(L, lua_pcall(L, narg, 0, 0));	9✔
390	return -1;	9✔
391	}
392
393	/* check that argument has no extra characters at the end */
394	#define notail(x) {if ((x)[2] != '\0') return -1;}
395
396	#define FLAGS_INTERACTIVE 1
397	#define FLAGS_VERSION 2
398	#define FLAGS_EXEC 4
399	#define FLAGS_OPTION 8
400	#define FLAGS_NOENV 16
401
402	static int collectargs(char *argv, int flags)	232✔
403	{
404	int i;	232✔
405	for (i = 1; argv[i] != NULL; i++) {	501✔
406	if (argv[i][0] != '-') /* Not an option? */	471✔
407	return i;	182✔
408	switch (argv[i][1]) { /* Check option. */	289✔
409	case '-':	3✔
410	notail(argv[i]);	3✔
411	return i+1;	2✔
412	case '\0':
413	return i;
414	case 'i':	4✔
415	notail(argv[i]);	4✔
416	*flags \|= FLAGS_INTERACTIVE;	4✔
417	/* fallthrough */
418	case 'v':	8✔
419	notail(argv[i]);	8✔
420	*flags \|= FLAGS_VERSION;	8✔
421	break;	8✔
422	case 'e':	194✔
423	*flags \|= FLAGS_EXEC;	194✔
424	/* fallthrough */
425	case 'j': /* LuaJIT extension */	255✔
426	case 'l':
427	*flags \|= FLAGS_OPTION;	255✔
428	if (argv[i][2] == '\0') {	255✔
429	i++;	241✔
430	if (argv[i] == NULL) return -1;	241✔
431	}
432	break;
433	case 'O': break; /* LuaJIT extension */
434	case 'b': /* LuaJIT extension */	9✔
435	if (*flags) return -1;	9✔
436	*flags \|= FLAGS_EXEC;	9✔
437	return i+1;	9✔
438	case 'E':	1✔
439	*flags \|= FLAGS_NOENV;	1✔
440	break;	1✔
441	default: return -1; /* invalid option */
442	}
443	}
444	return i;
445	}
446
447	static int runargs(lua_State L, char *argv, int argn)	227✔
448	{
449	int i;	227✔
450	for (i = 1; i < argn; i++) {	490✔
451	if (argv[i] == NULL) continue;	280✔
452	lua_assert(argv[i][0] == '-');	280✔
453	switch (argv[i][1]) {	280✔
454	case 'e': {	192✔
455	const char *chunk = argv[i] + 2;	192✔
456	if (*chunk == '\0') chunk = argv[++i];	192✔
457	lua_assert(chunk != NULL);	192✔
458	if (dostring(L, chunk, "=(command line)") != 0)	192✔
459	return 1;
460	break;
461	}
462	case 'l': {	57✔
463	const char *filename = argv[i] + 2;	57✔
464	if (*filename == '\0') filename = argv[++i];	57✔
465	lua_assert(filename != NULL);	57✔
466	if (dolibrary(L, filename))	57✔
467	return 1;
468	break;
469	}
470	case 'j': { /* LuaJIT extension. */	4✔
471	const char *cmd = argv[i] + 2;	4✔
472	if (*cmd == '\0') cmd = argv[++i];	4✔
473	lua_assert(cmd != NULL);	4✔
474	if (dojitcmd(L, cmd))	4✔
475	return 1;
476	break;
477	}
478	case 'O': /* LuaJIT extension. */	7✔
479	if (dojitopt(L, argv[i] + 2))	7✔
480	return 1;
481	break;
482	case 'b': /* LuaJIT extension. */	9✔
483	return dobytecode(L, argv+i);	9✔
484	default: break;
485	}
486	}
487	return LUA_OK;
488	}
489
490	static int handle_luainit(lua_State *L)	226✔
491	{
492	#if LJ_TARGET_CONSOLE
493	const char *init = NULL;
494	#else
495	const char *init = getenv(LUA_INIT);	226✔
496	#endif
497	if (init == NULL)	226✔
498	return LUA_OK;
499	else if (init[0] == '@')	×
500	return dofile(L, init+1);	×
501	else
502	return dostring(L, init, "=" LUA_INIT);	×
503	}
504
505	static struct Smain {
506	char **argv;
507	int argc;
508	int status;
509	} smain;
510
511	static int pmain(lua_State *L)	232✔
512	{
513	struct Smain *s = &smain;	232✔
514	char **argv = s->argv;	232✔
515	int argn;	232✔
516	int flags = 0;	232✔
517	globalL = L;	232✔
518	if (argv[0] && argv[0][0]) progname = argv[0];	232✔
519
520	LUAJIT_VERSION_SYM(); /* Linker-enforced version check. */	232✔
521
522	argn = collectargs(argv, &flags);	232✔
523	if (argn < 0) { /* Invalid args? */	232✔
524	print_usage();	5✔
525	s->status = 1;	5✔
526	return 0;	5✔
527	}
528
529	if ((flags & FLAGS_NOENV)) {	227✔
530	lua_pushboolean(L, 1);	1✔
531	lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");	1✔
532	}
533
534	/* Stop collector during library initialization. */
535	lua_gc(L, LUA_GCSTOP, 0);	227✔
536	luaL_openlibs(L);	227✔
537	lua_gc(L, LUA_GCRESTART, -1);	227✔
538
539	createargtable(L, argv, s->argc, argn);	227✔
540
541	if (!(flags & FLAGS_NOENV)) {	227✔
542	s->status = handle_luainit(L);	226✔
543	if (s->status != LUA_OK) return 0;	226✔
544	}
545
546	if ((flags & FLAGS_VERSION)) print_version();	227✔
547
548	s->status = runargs(L, argv, argn);	227✔
549	if (s->status != LUA_OK) return 0;	224✔
550
551	if (s->argc > argn) {	210✔
552	s->status = handle_script(L, argv + argn);	185✔
553	if (s->status != LUA_OK) return 0;	87✔
554	}
555
556	if ((flags & FLAGS_INTERACTIVE)) {	111✔
557	print_jit_status(L);	4✔
558	dotty(L);	4✔
559	} else if (s->argc == argn && !(flags & (FLAGS_EXEC\|FLAGS_VERSION))) {	107✔
560	if (lua_stdin_is_tty()) {	1✔
561	print_version();	×
562	print_jit_status(L);	×
563	dotty(L);	×
564	} else {
565	dofile(L, NULL); /* Executes stdin as a file. */	1✔
566	}
567	}
568	return 0;
569	}
570
571	int main(int argc, char **argv)	232✔
572	{
573	int status;	232✔
574	lua_State *L = lua_open();	232✔
575	if (L == NULL) {	232✔
576	l_message(argv[0], "cannot create state: not enough memory");	×
577	return EXIT_FAILURE;	×
578	}
579	smain.argc = argc;	232✔
580	smain.argv = argv;	232✔
581	status = lua_cpcall(L, pmain, NULL);	232✔
582	report(L, status);	131✔
583	lua_close(L);	131✔
584	return (status \|\| smain.status > 0) ? EXIT_FAILURE : EXIT_SUCCESS;	131✔
585	}
586

tarantool / luajit / 7262987147

Source File Press 'n' to go to next uncovered line, 'b' for previous

Source File
Press 'n' to go to next uncovered line, 'b' for previous