cosmopolitan/third_party/lua/ltable.h
Michael Lenaghan 0dbf01bf1d
Bring Lua to 5.4.6. (#1214)
This essentially re-does the work of #875 on top of master.

This is what I did to check that Cosmo's Lua extensions still worked:

```
$ build/bootstrap/make MODE=aarch64 o/aarch64/third_party/lua/lua
$ ape o/aarch64/third_party/lua/lua
>: 10
10
>: 010
8
>: 0b10
2
>: string.byte("\e")
27
>: "Hello, %s" % {"world"}
Hello, world
>: "*" * 3
***
```

`luaL_traceback2` was used to show the stack trace with parameter
values; it's used in `LuaCallWithTrace`, which is used in Redbean to run
Lua code. You should be able to see the extended stack trace by running
something like this: `redbean -e "function a(b)c()end a(2)"` (with
"params" indicating the extended stack trace):

```
stack traceback:
 [string "function a(b)c()end a(2)"]:1: in function 'a', params: b = 2;
 [string "function a(b)c()end a(2)"]:1: in main chunk
```
@pkulchenko confirmed that I get the expected result with the updated
code.

This is what I did to check that Lua itself still worked:

```
$ cd third_party/lua/test/
$ ape ../../../o/aarch64/third_party/lua/lua all.lua
```

There's one test failure, in `files.lua`:

```
***** FILE 'files.lua'*****
testing i/o
../../../o/aarch64/third_party/lua/lua: files.lua:84: assertion failed!
stack traceback:
[C]: in function 'assert'
files.lua:84: in main chunk
(...tail calls...)
all.lua:195: in main chunk
[C]: in ?
.>>> closing state <<<
```

That isn't a result of these changes; the same test is failing in
master.

The failure is here:

```lua
if not _port then   -- invalid seek
  local status, msg, code = io.stdin:seek("set", 1000)
  assert(not status and type(msg) == "string" and type(code) == "number")
end
```

The test expects a seek to offset 1,000 on stdin to fail — but it
doesn't. `status` ends up being the new offset rather than `nil`.

If I comment out that one test, the remaining tests succeed.
2024-06-15 20:13:08 -04:00

59 lines
2.1 KiB
C

#ifndef ltable_h
#define ltable_h
#include "third_party/lua/lobject.h"
#define gnode(t,i) (&(t)->node[i])
#define gval(n) (&(n)->i_val)
#define gnext(n) ((n)->u.next)
/*
** Clear all bits of fast-access metamethods, which means that the table
** may have any of these metamethods. (First access that fails after the
** clearing will set the bit again.)
*/
#define invalidateTMcache(t) ((t)->flags &= ~maskflags)
/* true when 't' is using 'dummynode' as its hash part */
#define isdummy(t) ((t)->lastfree == NULL)
/* allocated size for hash nodes */
#define allocsizenode(t) (isdummy(t) ? 0 : sizenode(t))
/* returns the Node, given the value of a table entry */
#define nodefromval(v) cast(Node *, (v))
LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key,
TValue *value);
LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key);
LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
LUAI_FUNC void luaH_newkey (lua_State *L, Table *t, const TValue *key,
TValue *value);
LUAI_FUNC void luaH_set (lua_State *L, Table *t, const TValue *key,
TValue *value);
LUAI_FUNC void luaH_finishset (lua_State *L, Table *t, const TValue *key,
const TValue *slot, TValue *value);
LUAI_FUNC Table *luaH_new (lua_State *L);
LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
unsigned int nhsize);
LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize);
LUAI_FUNC void luaH_free (lua_State *L, Table *t);
LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
LUAI_FUNC lua_Unsigned luaH_getn (Table *t);
LUAI_FUNC unsigned int luaH_realasize (const Table *t);
#if defined(LUA_DEBUG)
LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
#endif
#endif