diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/lapi.js | 15 | ||||
| -rw-r--r-- | src/ltablib.js | 44 |
2 files changed, 58 insertions, 1 deletions
diff --git a/src/lapi.js b/src/lapi.js index 488fb58..b39046b 100644 --- a/src/lapi.js +++ b/src/lapi.js @@ -119,6 +119,11 @@ const lua_pushvalue = function(L, idx) { assert(L.top <= L.ci.top, "stack overflow"); }; +const lua_pushtvalue = function(L, tvalue) { + L.stack[L.top++] = tvalue; + assert(L.top <= L.ci.top, "stack overflow"); +}; + const lua_settop = function(L, idx) { let func = L.ci.funcOff; if (idx >= 0) { @@ -539,10 +544,15 @@ const lua_topointer = function(L, idx) { }; const lua_compare = function(L, index1, index2, op) { - let i = 0; let o1 = index2addr(L, index1); let o2 = index2addr(L, index1); + return lua_compare_(L, o1, o2, op); +}; + +const lua_compare_ = function(L, o1, o2, op) { + let i = 0; + if (!o1.ttisnil() && !o2.ttisnil()) { switch (op) { case lua.LUA_OPEQ: i = lvm.luaV_equalobj(L, o1, o2); break; @@ -757,12 +767,14 @@ const lua_getextraspace = function () { }; module.exports.index2addr = index2addr; +module.exports.index2addr_ = index2addr_; module.exports.lua_absindex = lua_absindex; module.exports.lua_atpanic = lua_atpanic; module.exports.lua_call = lua_call; module.exports.lua_callk = lua_callk; module.exports.lua_checkstack = lua_checkstack; module.exports.lua_compare = lua_compare; +module.exports.lua_compare_ = lua_compare_; module.exports.lua_concat = lua_concat; module.exports.lua_copy = lua_copy; module.exports.lua_createtable = lua_createtable; @@ -800,6 +812,7 @@ module.exports.lua_pushnil = lua_pushnil; module.exports.lua_pushnumber = lua_pushnumber; module.exports.lua_pushstring = lua_pushstring; module.exports.lua_pushthread = lua_pushthread; +module.exports.lua_pushtvalue = lua_pushtvalue; module.exports.lua_pushvalue = lua_pushvalue; module.exports.lua_rawequal = lua_rawequal; module.exports.lua_rawget = lua_rawget; diff --git a/src/ltablib.js b/src/ltablib.js index 97ecd65..fa43523 100644 --- a/src/ltablib.js +++ b/src/ltablib.js @@ -180,12 +180,56 @@ const unpack = function(L) { return n; }; + +// TODO: Maybe do the quicksort after all +const auxsort = function(L) { + let t = lapi.index2addr(L, 1); + + if (lapi.lua_type(L, 2) !== CT.LUA_TFUNCTION) { /* no function? */ + [...t.value.entries()] + .sort(function (a, b) { + if (typeof a[0] !== 'number') return 1; + else if (typeof b[0] !== 'number') return -1; + return lapi.lua_compare_(L, a[1], b[1], lua.LUA_OPLT) === 1 ? -1 : 1; /* a < b */ + }) + .forEach((e, i) => typeof e[0] === 'number' ? t.value.set(i, e[1]) : true); + } else { + [...t.value.entries()] + .sort(function (a, b) { + if (typeof a[0] !== 'number') return 1; + else if (typeof b[0] !== 'number') return -1; + + lapi.lua_pushvalue(L, 2); /* push function */ + lapi.lua_pushtvalue(L, a[1]); /* since we use Map.sort, a and b are not on the stack */ + lapi.lua_pushtvalue(L, b[1]); + lapi.lua_call(L, 2, 1); /* call function */ + let res = lapi.lua_toboolean(L, -1); /* get result */ + lapi.lua_pop(L, 1); /* pop result */ + return res ? -1 : 1; + }) + .forEach((e, i) => typeof e[0] === 'number' ? t.value.set(i, e[1]) : true); + } +}; + +const sort = function(L) { + let n = aux_getn(L, 1, TAB_RW); + if (n > 1) { /* non-trivial interval? */ + lauxlib.luaL_argcheck(L, n < Number.MAX_SAFE_INTEGER, 1, "array too big"); + if (!lapi.lua_isnoneornil(L, 2)) /* is there a 2nd argument? */ + lauxlib.luaL_checktype(L, 2, CT.LUA_TFUNCTION); /* must be a function */ + lapi.lua_settop(L, 2); /* make sure there are two arguments */ + auxsort(L); + } + return 0; +}; + const tab_funcs = { "concat": tconcat, "insert": tinsert, "move": tmove, "pack": pack, "remove": tremove, + "sort": sort, "unpack": unpack }; |