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Diffstat (limited to 'src/ltablib.js')
-rw-r--r--src/ltablib.js244
1 files changed, 144 insertions, 100 deletions
diff --git a/src/ltablib.js b/src/ltablib.js
index 70ff595..6f408da 100644
--- a/src/ltablib.js
+++ b/src/ltablib.js
@@ -1,11 +1,54 @@
"use strict";
-const assert = require('assert');
-
-const lua = require('./lua.js');
-const lauxlib = require('./lauxlib.js');
-const luaconf = require('./luaconf.js');
-
+const { LUA_MAXINTEGER } = require('./luaconf.js');
+const {
+ LUA_OPEQ,
+ LUA_OPLT,
+ LUA_TFUNCTION,
+ LUA_TNIL,
+ LUA_TTABLE,
+ lua_call,
+ lua_checkstack,
+ lua_compare,
+ lua_createtable,
+ lua_geti,
+ lua_getmetatable,
+ lua_gettop,
+ lua_insert,
+ lua_isnil,
+ lua_isnoneornil,
+ lua_isstring,
+ lua_pop,
+ lua_pushinteger,
+ lua_pushnil,
+ lua_pushstring,
+ lua_pushvalue,
+ lua_rawget,
+ lua_setfield,
+ lua_seti,
+ lua_settop,
+ lua_toboolean,
+ lua_type
+} = require('./lua.js');
+const {
+ luaL_Buffer,
+ luaL_addlstring,
+ luaL_addvalue,
+ luaL_argcheck,
+ luaL_buffinit,
+ luaL_checkinteger,
+ luaL_checktype,
+ luaL_error,
+ luaL_len,
+ luaL_newlib,
+ luaL_opt,
+ luaL_optinteger,
+ luaL_optlstring,
+ luaL_pushresult,
+ luaL_typename
+} = require('./lauxlib.js');
+const lualib = require('./lualib.js');
+const { to_luastring } = require("./fengaricore.js");
/*
** Operations that an object must define to mimic a table
@@ -17,8 +60,8 @@ const TAB_L = 4; /* length */
const TAB_RW = (TAB_R | TAB_W); /* read/write */
const checkfield = function(L, key, n) {
- lua.lua_pushstring(L, key);
- return lua.lua_rawget(L, -n) !== lua.LUA_TNIL;
+ lua_pushstring(L, key);
+ return lua_rawget(L, -n) !== LUA_TNIL;
};
/*
@@ -26,70 +69,70 @@ const checkfield = function(L, key, n) {
** has a metatable with the required metamethods)
*/
const checktab = function(L, arg, what) {
- if (lua.lua_type(L, arg) !== lua.LUA_TTABLE) { /* is it not a table? */
+ if (lua_type(L, arg) !== LUA_TTABLE) { /* is it not a table? */
let n = 1;
- if (lua.lua_getmetatable(L, arg) && /* must have metatable */
- (!(what & TAB_R) || checkfield(L, lua.to_luastring("__index", true), ++n)) &&
- (!(what & TAB_W) || checkfield(L, lua.to_luastring("__newindex", true), ++n)) &&
- (!(what & TAB_L) || checkfield(L, lua.to_luastring("__len", true), ++n))) {
- lua.lua_pop(L, n); /* pop metatable and tested metamethods */
+ if (lua_getmetatable(L, arg) && /* must have metatable */
+ (!(what & TAB_R) || checkfield(L, to_luastring("__index", true), ++n)) &&
+ (!(what & TAB_W) || checkfield(L, to_luastring("__newindex", true), ++n)) &&
+ (!(what & TAB_L) || checkfield(L, to_luastring("__len", true), ++n))) {
+ lua_pop(L, n); /* pop metatable and tested metamethods */
}
else
- lauxlib.luaL_checktype(L, arg, lua.LUA_TTABLE); /* force an error */
+ luaL_checktype(L, arg, LUA_TTABLE); /* force an error */
}
};
const aux_getn = function(L, n, w) {
checktab(L, n, w | TAB_L);
- return lauxlib.luaL_len(L, n);
+ return luaL_len(L, n);
};
const addfield = function(L, b, i) {
- lua.lua_geti(L, 1, i);
- if (!lua.lua_isstring(L, -1))
- lauxlib.luaL_error(L, lua.to_luastring("invalid value (%s) at index %d in table for 'concat'"),
- lauxlib.luaL_typename(L, -1), i);
+ lua_geti(L, 1, i);
+ if (!lua_isstring(L, -1))
+ luaL_error(L, to_luastring("invalid value (%s) at index %d in table for 'concat'"),
+ luaL_typename(L, -1), i);
- lauxlib.luaL_addvalue(b);
+ luaL_addvalue(b);
};
const tinsert = function(L) {
let e = aux_getn(L, 1, TAB_RW) + 1; /* first empty element */
let pos;
- switch (lua.lua_gettop(L)) {
+ switch (lua_gettop(L)) {
case 2:
pos = e;
break;
case 3: {
- pos = lauxlib.luaL_checkinteger(L, 2); /* 2nd argument is the position */
- lauxlib.luaL_argcheck(L, 1 <= pos && pos <= e, 2, lua.to_luastring("position out of bounds", true));
+ pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */
+ luaL_argcheck(L, 1 <= pos && pos <= e, 2, to_luastring("position out of bounds", true));
for (let i = e; i > pos; i--) { /* move up elements */
- lua.lua_geti(L, 1, i - 1);
- lua.lua_seti(L, 1, i); /* t[i] = t[i - 1] */
+ lua_geti(L, 1, i - 1);
+ lua_seti(L, 1, i); /* t[i] = t[i - 1] */
}
break;
}
default: {
- return lauxlib.luaL_error(L, lua.to_luastring("wrong number of arguments to 'insert'", true));
+ return luaL_error(L, to_luastring("wrong number of arguments to 'insert'", true));
}
}
- lua.lua_seti(L, 1, pos); /* t[pos] = v */
+ lua_seti(L, 1, pos); /* t[pos] = v */
return 0;
};
const tremove = function(L) {
let size = aux_getn(L, 1, TAB_RW);
- let pos = lauxlib.luaL_optinteger(L, 2, size);
+ let pos = luaL_optinteger(L, 2, size);
if (pos !== size) /* validate 'pos' if given */
- lauxlib.luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, lua.to_luastring("position out of bounds", true));
- lua.lua_geti(L, 1, pos); /* result = t[pos] */
+ luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, to_luastring("position out of bounds", true));
+ lua_geti(L, 1, pos); /* result = t[pos] */
for (; pos < size; pos++) {
- lua.lua_geti(L, 1, pos + 1);
- lua.lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */
+ lua_geti(L, 1, pos + 1);
+ lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */
}
- lua.lua_pushnil(L);
- lua.lua_seti(L, 1, pos); /* t[pos] = nil */
+ lua_pushnil(L);
+ lua_seti(L, 1, pos); /* t[pos] = nil */
return 1;
};
@@ -100,77 +143,78 @@ const tremove = function(L) {
** than origin, or copying to another table.
*/
const tmove = function(L) {
- let f = lauxlib.luaL_checkinteger(L, 2);
- let e = lauxlib.luaL_checkinteger(L, 3);
- let t = lauxlib.luaL_checkinteger(L, 4);
- let tt = !lua.lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */
+ let f = luaL_checkinteger(L, 2);
+ let e = luaL_checkinteger(L, 3);
+ let t = luaL_checkinteger(L, 4);
+ let tt = !lua_isnoneornil(L, 5) ? 5 : 1; /* destination table */
checktab(L, 1, TAB_R);
checktab(L, tt, TAB_W);
if (e >= f) { /* otherwise, nothing to move */
- lauxlib.luaL_argcheck(L, f > 0 || e < luaconf.LUA_MAXINTEGER + f, 3, lua.to_luastring("too many elements to move", true));
+ luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3, to_luastring("too many elements to move", true));
let n = e - f + 1; /* number of elements to move */
- lauxlib.luaL_argcheck(L, t <= luaconf.LUA_MAXINTEGER - n + 1, 4, lua.to_luastring("destination wrap around", true));
+ luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4, to_luastring("destination wrap around", true));
- if (t > e || t <= f || (tt !== 1 && lua.lua_compare(L, 1, tt, lua.LUA_OPEQ) !== 1)) {
+ if (t > e || t <= f || (tt !== 1 && lua_compare(L, 1, tt, LUA_OPEQ) !== 1)) {
for (let i = 0; i < n; i++) {
- lua.lua_geti(L, 1, f + i);
- lua.lua_seti(L, tt, t + i);
+ lua_geti(L, 1, f + i);
+ lua_seti(L, tt, t + i);
}
} else {
for (let i = n - 1; i >= 0; i--) {
- lua.lua_geti(L, 1, f + i);
- lua.lua_seti(L, tt, t + i);
+ lua_geti(L, 1, f + i);
+ lua_seti(L, tt, t + i);
}
}
}
- lua.lua_pushvalue(L, tt); /* return destination table */
+ lua_pushvalue(L, tt); /* return destination table */
return 1;
};
const tconcat = function(L) {
let last = aux_getn(L, 1, TAB_R);
- let sep = lauxlib.luaL_optlstring(L, 2, lua.to_luastring(""));
- let i = lauxlib.luaL_optinteger(L, 3, 1);
- last = lauxlib.luaL_optinteger(L, 4, last);
+ let sep = luaL_optlstring(L, 2, to_luastring(""));
+ let lsep = sep.length;
+ let i = luaL_optinteger(L, 3, 1);
+ last = luaL_optinteger(L, 4, last);
- let b = new lauxlib.luaL_Buffer();
- lauxlib.luaL_buffinit(L, b);
+ let b = new luaL_Buffer();
+ luaL_buffinit(L, b);
for (; i < last; i++) {
addfield(L, b, i);
- lauxlib.luaL_addlstring(b, sep);
+ luaL_addlstring(b, sep, lsep);
}
if (i === last)
addfield(L, b, i);
- lauxlib.luaL_pushresult(b);
+ luaL_pushresult(b);
return 1;
};
const pack = function(L) {
- let n = lua.lua_gettop(L); /* number of elements to pack */
- lua.lua_createtable(L, n, 1); /* create result table */
- lua.lua_insert(L, 1); /* put it at index 1 */
+ let n = lua_gettop(L); /* number of elements to pack */
+ lua_createtable(L, n, 1); /* create result table */
+ lua_insert(L, 1); /* put it at index 1 */
for (let i = n; i >= 1; i--) /* assign elements */
- lua.lua_seti(L, 1, i);
- lua.lua_pushinteger(L, n);
- lua.lua_setfield(L, 1, lua.to_luastring("n")); /* t.n = number of elements */
+ lua_seti(L, 1, i);
+ lua_pushinteger(L, n);
+ lua_setfield(L, 1, to_luastring("n")); /* t.n = number of elements */
return 1; /* return table */
};
const unpack = function(L) {
- let i = lauxlib.luaL_optinteger(L, 2, 1);
- let e = lauxlib.luaL_opt(L, lauxlib.luaL_checkinteger, 3, lauxlib.luaL_len(L, 1));
+ let i = luaL_optinteger(L, 2, 1);
+ let e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1));
if (i > e) return 0; /* empty range */
let n = e - i; /* number of elements minus 1 (avoid overflows) */
- if (n >= Number.MAX_SAFE_INTEGER || !lua.lua_checkstack(L, ++n))
- return lauxlib.luaL_error(L, lua.to_luastring("too many results to unpack", true));
+ if (n >= Number.MAX_SAFE_INTEGER || !lua_checkstack(L, ++n))
+ return luaL_error(L, to_luastring("too many results to unpack", true));
for (; i < e; i++) /* push arg[i..e - 1] (to avoid overflows) */
- lua.lua_geti(L, 1, i);
- lua.lua_geti(L, 1, e); /* push last element */
+ lua_geti(L, 1, i);
+ lua_geti(L, 1, e); /* push last element */
return n;
};
@@ -181,20 +225,20 @@ const l_randomizePivot = function() {
const RANLIMIT = 100;
const set2 = function(L, i, j) {
- lua.lua_seti(L, 1, i);
- lua.lua_seti(L, 1, j);
+ lua_seti(L, 1, i);
+ lua_seti(L, 1, j);
};
const sort_comp = function(L, a, b) {
- if (lua.lua_isnil(L, 2)) /* no function? */
- return lua.lua_compare(L, a, b, lua.LUA_OPLT); /* a < b */
+ if (lua_isnil(L, 2)) /* no function? */
+ return lua_compare(L, a, b, LUA_OPLT); /* a < b */
else { /* function */
- lua.lua_pushvalue(L, 2); /* push function */
- lua.lua_pushvalue(L, a-1); /* -1 to compensate function */
- lua.lua_pushvalue(L, b-2); /* -2 to compensate function and 'a' */
- lua.lua_call(L, 2, 1); /* call function */
- let res = lua.lua_toboolean(L, -1); /* get result */
- lua.lua_pop(L, 1); /* pop result */
+ lua_pushvalue(L, 2); /* push function */
+ lua_pushvalue(L, a-1); /* -1 to compensate function */
+ lua_pushvalue(L, b-2); /* -2 to compensate function and 'a' */
+ lua_call(L, 2, 1); /* call function */
+ let res = lua_toboolean(L, -1); /* get result */
+ lua_pop(L, 1); /* pop result */
return res;
}
};
@@ -205,22 +249,22 @@ const partition = function(L, lo, up) {
/* loop invariant: a[lo .. i] <= P <= a[j .. up] */
for (;;) {
/* next loop: repeat ++i while a[i] < P */
- while (lua.lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) {
+ while (lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) {
if (i == up - 1) /* a[i] < P but a[up - 1] == P ?? */
- lauxlib.luaL_error(L, lua.to_luastring("invalid order function for sorting"));
- lua.lua_pop(L, 1); /* remove a[i] */
+ luaL_error(L, to_luastring("invalid order function for sorting"));
+ lua_pop(L, 1); /* remove a[i] */
}
/* after the loop, a[i] >= P and a[lo .. i - 1] < P */
/* next loop: repeat --j while P < a[j] */
- while (lua.lua_geti(L, 1, --j), sort_comp(L, -3, -1)) {
+ while (lua_geti(L, 1, --j), sort_comp(L, -3, -1)) {
if (j < i) /* j < i but a[j] > P ?? */
- lauxlib.luaL_error(L, lua.to_luastring("invalid order function for sorting"));
- lua.lua_pop(L, 1); /* remove a[j] */
+ luaL_error(L, to_luastring("invalid order function for sorting"));
+ lua_pop(L, 1); /* remove a[j] */
}
/* after the loop, a[j] <= P and a[j + 1 .. up] >= P */
if (j < i) { /* no elements out of place? */
/* a[lo .. i - 1] <= P <= a[j + 1 .. i .. up] */
- lua.lua_pop(L, 1); /* pop a[j] */
+ lua_pop(L, 1); /* pop a[j] */
/* swap pivot (a[up - 1]) with a[i] to satisfy pos-condition */
set2(L, up - 1, i);
return i;
@@ -233,19 +277,19 @@ const partition = function(L, lo, up) {
const choosePivot = function(lo, up, rnd) {
let r4 = Math.floor((up - lo) / 4); /* range/4 */
let p = rnd % (r4 * 2) + (lo + r4);
- assert(lo + r4 <= p && p <= up - r4);
+ lualib.lua_assert(lo + r4 <= p && p <= up - r4);
return p;
};
const auxsort = function(L, lo, up, rnd) {
while (lo < up) { /* loop for tail recursion */
/* sort elements 'lo', 'p', and 'up' */
- lua.lua_geti(L, 1, lo);
- lua.lua_geti(L, 1, up);
+ lua_geti(L, 1, lo);
+ lua_geti(L, 1, up);
if (sort_comp(L, -1, -2)) /* a[up] < a[lo]? */
set2(L, lo, up); /* swap a[lo] - a[up] */
else
- lua.lua_pop(L, 2); /* remove both values */
+ lua_pop(L, 2); /* remove both values */
if (up - lo == 1) /* only 2 elements? */
return; /* already sorted */
let p; /* Pivot index */
@@ -253,23 +297,23 @@ const auxsort = function(L, lo, up, rnd) {
p = Math.floor((lo + up)/2); /* middle element is a good pivot */
else /* for larger intervals, it is worth a random pivot */
p = choosePivot(lo, up, rnd);
- lua.lua_geti(L, 1, p);
- lua.lua_geti(L, 1, lo);
+ lua_geti(L, 1, p);
+ lua_geti(L, 1, lo);
if (sort_comp(L, -2, -1)) /* a[p] < a[lo]? */
set2(L, p, lo); /* swap a[p] - a[lo] */
else {
- lua.lua_pop(L, 1); /* remove a[lo] */
- lua.lua_geti(L, 1, up);
+ lua_pop(L, 1); /* remove a[lo] */
+ lua_geti(L, 1, up);
if (sort_comp(L, -1, -2)) /* a[up] < a[p]? */
set2(L, p, up); /* swap a[up] - a[p] */
else
- lua.lua_pop(L, 2);
+ lua_pop(L, 2);
}
if (up - lo == 2) /* only 3 elements? */
return; /* already sorted */
- lua.lua_geti(L, 1, p); /* get middle element (Pivot) */
- lua.lua_pushvalue(L, -1); /* push Pivot */
- lua.lua_geti(L, 1, up - 1); /* push a[up - 1] */
+ lua_geti(L, 1, p); /* get middle element (Pivot) */
+ lua_pushvalue(L, -1); /* push Pivot */
+ lua_geti(L, 1, up - 1); /* push a[up - 1] */
set2(L, p, up - 1); /* swap Pivot (a[p]) with a[up - 1] */
p = partition(L, lo, up);
let n;
@@ -291,10 +335,10 @@ const auxsort = function(L, lo, up, rnd) {
const sort = function(L) {
let n = aux_getn(L, 1, TAB_RW);
if (n > 1) { /* non-trivial interval? */
- lauxlib.luaL_argcheck(L, n < luaconf.LUA_MAXINTEGER, 1, lua.to_luastring("array too big", true));
- if (!lua.lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
- lauxlib.luaL_checktype(L, 2, lua.LUA_TFUNCTION); /* must be a function */
- lua.lua_settop(L, 2); /* make sure there are two arguments */
+ luaL_argcheck(L, n < LUA_MAXINTEGER, 1, to_luastring("array too big", true));
+ if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
+ luaL_checktype(L, 2, LUA_TFUNCTION); /* must be a function */
+ lua_settop(L, 2); /* make sure there are two arguments */
auxsort(L, 1, n, 0);
}
return 0;
@@ -311,7 +355,7 @@ const tab_funcs = {
};
const luaopen_table = function(L) {
- lauxlib.luaL_newlib(L, tab_funcs);
+ luaL_newlib(L, tab_funcs);
return 1;
};
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-11 04:41:27 +0000