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-rw-r--r--src/lapi.js8
-rw-r--r--src/ltablib.js14
2 files changed, 21 insertions, 1 deletions
diff --git a/src/lapi.js b/src/lapi.js
index 6316326..f34216b 100644
--- a/src/lapi.js
+++ b/src/lapi.js
@@ -355,6 +355,13 @@ const lua_setfield = function(L, idx, k) {
auxsetstr(L, index2addr(L, idx), k)
};
+const lua_seti = function(L, idx, n) {
+ assert(1 < L.top - L.ci.funcOff, "not enough elements in the stack");
+ let t = index2addr(L, idx);
+ lvm.settable(L, t, n, L.stack[L.top - 1]);
+ L.top--; /* pop value */
+};
+
const lua_rawset = function(L, idx) {
assert(2 < L.top - L.ci.funcOff, "not enough elements in the stack");
let o = index2addr(L, idx);
@@ -780,6 +787,7 @@ module.exports.lua_remove = lua_remove;
module.exports.lua_rotate = lua_rotate;
module.exports.lua_setfield = lua_setfield;
module.exports.lua_setglobal = lua_setglobal;
+module.exports.lua_seti = lua_seti;
module.exports.lua_setmetatable = lua_setmetatable;
module.exports.lua_settable = lua_settable;
module.exports.lua_settop = lua_settop;
diff --git a/src/ltablib.js b/src/ltablib.js
index 8e1f758..ec7c578 100644
--- a/src/ltablib.js
+++ b/src/ltablib.js
@@ -80,8 +80,20 @@ const tconcat = function(L) {
return 1;
};
+const pack = function(L) {
+ let n = lapi.lua_gettop(L); /* number of elements to pack */
+ lapi.lua_createtable(L, n, 1); /* create result table */
+ lapi.lua_insert(L, 1); /* put it at index 1 */
+ for (let i = n; i >= 1; i--) /* assign elements */
+ lapi.lua_seti(L, 1, i);
+ lapi.lua_pushinteger(L, n);
+ lapi.lua_setfield(L, 1, "n"); /* t.n = number of elements */
+ return 1; /* return table */
+};
+
const tab_funcs = {
- "concat": tconcat
+ "concat": tconcat,
+ "pack": pack
};
const luaopen_table = function(L) {