prosody
86c431650dfd
util-src/compat.c

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util-src/compat.c @ 9659:86c431650dfd

net.websocket.frames: Prefer Lua 5.2 built-in bit module over LuaJIT version When running on Lua 5.2 this makes sense since bit32 is usually already loaded. It's sensible to prefer this going forward in case of incompatibilities between the two variants.
author Kim Alvefur <zash@zash.se>
date Thu, 29 Nov 2018 16:53:22 +0100
parent 9561:cfc7b2f7251e
child 12976:a187600ec7d6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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9561
cfc7b2f7251e util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
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1
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2 #include <lua.h>
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3 #include <lauxlib.h>
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6 static int lc_xpcall (lua_State *L) {
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7 int ret;
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8 int n_arg = lua_gettop(L);
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9 /* f, msgh, p1, p2... */
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10 luaL_argcheck(L, n_arg >= 2, 2, "value expected");
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11 lua_pushvalue(L, 1); /* f to top */
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12 lua_pushvalue(L, 2); /* msgh to top */
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13 lua_replace(L, 1); /* msgh to 1 */
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14 lua_replace(L, 2); /* f to 2 */
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15 /* msgh, f, p1, p2... */
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16 ret = lua_pcall(L, n_arg - 2, LUA_MULTRET, 1);
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17 lua_pushboolean(L, ret == 0);
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18 lua_replace(L, 1);
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19 return lua_gettop(L);
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20 }
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21
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22 int luaopen_util_compat(lua_State *L) {
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23 lua_createtable(L, 0, 2);
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24 {
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25 lua_pushcfunction(L, lc_xpcall);
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26 lua_setfield(L, -2, "xpcall");
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27 }
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28 return 1;
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29 }