From cb0295e52870f22c5dd1a1726342b8d4b147b1c5 Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Tue, 2 May 2017 16:37:50 +1000
Subject: Refactor table implementation

---
 src/lapi.js       |  91 ++++++++++++--------------
 src/lcode.js      |   5 +-
 src/ldebug.js     |   6 +-
 src/lobject.js    |  39 -----------
 src/lstate.js     |   8 +--
 src/ltable.js     | 191 +++++++++++++++++++++++++++++++++++++++---------------
 src/ltablib.js    |  56 +++++++++-------
 src/ltm.js        |   9 +--
 src/lvm.js        |  16 ++---
 tests/lbaselib.js |   6 +-
 tests/lexparse.js |  14 ++--
 tests/ltablib.js  |  20 +++---
 tests/lvm.js      |  16 ++---
 13 files changed, 263 insertions(+), 214 deletions(-)

diff --git a/src/lapi.js b/src/lapi.js
index a336220..4de27c2 100644
--- a/src/lapi.js
+++ b/src/lapi.js
@@ -329,18 +329,14 @@ const auxsetstr = function(L, t, k) {
 
     assert(1 < L.top - L.ci.funcOff, "not enough elements in the stack");
 
-    if (t.ttistable() && !lobject.table_index(t, k).ttisnil()) {
-        lobject.table_newindex(t, k, L.stack[L.top - 1]);
-        L.top--; /* pop value */
-    } else {
-        L.stack[L.top++] = str;
-        lvm.settable(L, t, L.stack[L.top - 1], L.stack[L.top - 2]);
-        L.top -= 2; /* pop value and key */
-    }
+    L.stack[L.top++] = str;
+    lvm.settable(L, t, L.stack[L.top - 1], L.stack[L.top - 2]);
+    /* pop value and key */
+    L.top -= 2;
 };
 
 const lua_setglobal = function(L, name) {
-    auxsetstr(L, L.l_G.l_registry.value.get(defs.LUA_RIDX_GLOBALS), name);
+    auxsetstr(L, ltable.luaH_getint(L.l_G.l_registry.value, defs.LUA_RIDX_GLOBALS), name);
 };
 
 const lua_setmetatable = function(L, objindex) {
@@ -351,13 +347,13 @@ const lua_setmetatable = function(L, objindex) {
         mt = null;
     else {
         assert(L.stack[L.top - 1].ttistable(), "table expected");
-        mt = L.stack[L.top - 1];
+        mt = L.stack[L.top - 1].value;
     }
 
     switch (obj.ttnov()) {
         case CT.LUA_TUSERDATA:
         case CT.LUA_TTABLE: {
-            obj.metatable = mt;
+            obj.value.metatable = mt;
             break;
         }
         default: {
@@ -366,7 +362,7 @@ const lua_setmetatable = function(L, objindex) {
         }
     }
 
-    L.top--;
+    L.stack[--L.top] = void 0;
     return true;
 };
 
@@ -383,17 +379,23 @@ const lua_setfield = function(L, idx, k) {
 };
 
 const lua_seti = function(L, idx, n) {
+    assert(typeof n === "number");
     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 */
+    L.stack[L.top++] = new TValue(CT.LUA_TNUMINT, n);
+    assert(L.top <= L.ci.top, "stack overflow");
+    lvm.settable(L, t, L.stack[L.top - 1], L.stack[L.top - 2]);
+    /* pop value and key */
+    L.stack[--L.top] = void 0;
+    L.stack[--L.top] = void 0;
 };
 
 const lua_rawset = function(L, idx) {
     assert(2 < L.top - L.ci.funcOff, "not enough elements in the stack");
     let o = index2addr(L, idx);
     assert(o.ttistable(), "table expected");
-    lobject.table_newindex(o, L.stack[L.top - 2], L.stack[L.top - 1]);
+    let slot = ltable.luaH_set(o.value, L.stack[L.top - 2]);
+    slot.setfrom(L.stack[L.top - 1]);
     L.top -= 2;
 };
 
@@ -401,8 +403,9 @@ const lua_rawsetp = function(L, idx, p) {
     assert(1 < L.top - L.ci.funcOff, "not enough elements in the stack");
     let o = index2addr(L, idx);
     assert(L, o.ttistable(), "table expected");
-    let k = p;
-    lobject.table_newindex(o, k, L.stack[L.top - 1]);
+    let k = new TValue(CT.LUA_TLIGHTUSERDATA, p);
+    let slot = ltable.luaH_set(o.value, k);
+    slot.setfrom(L.stack[L.top - 1]);
     L.top--;
 };
 
@@ -414,15 +417,10 @@ const auxgetstr = function(L, t, k) {
     assert(Array.isArray(k), "key must be an array of bytes");
 
     let str = L.l_G.intern(k);
-    let slot = lobject.table_index(t, k);
-    if (t.ttistable() && !slot.ttisnil()) {
-        L.stack[L.top++] = slot;
-        assert(L.top <= L.ci.top, "stack overflow");
-    } else {
-        L.stack[L.top++] = str;
-        assert(L.top <= L.ci.top, "stack overflow");
-        lvm.gettable(L, t, L.stack[L.top - 1], L.top - 1);
-    }
+
+    L.stack[L.top++] = str;
+    assert(L.top <= L.ci.top, "stack overflow");
+    lvm.gettable(L, t, L.stack[L.top - 1], L.top - 1);
 
     return L.stack[L.top - 1].ttnov();
 };
@@ -432,8 +430,7 @@ const lua_rawgeti = function(L, idx, n) {
 
     assert(t.ttistable(), "table expected");
 
-    L.stack[L.top++] = lobject.table_index(t, n);
-
+    L.stack[L.top++] = ltable.luaH_getint(t.value, n);
     assert(L.top <= L.ci.top, "stack overflow");
 
     return L.stack[L.top - 1].ttnov();
@@ -442,8 +439,8 @@ const lua_rawgeti = function(L, idx, n) {
 const lua_rawgetp = function(L, idx, p) {
     let t = index2addr(L, idx);
     assert(t.ttistable(), "table expected");
-    let k = p;
-    L.stack[L.top++] = lobject.table_index(t, k);
+    let k = new TValue(CT.LUA_TLIGHTUSERDATA, p);
+    L.stack[L.top++] = ltable.luaH_get(t.value, k);
     assert(L.top <= L.ci.top, "stack overflow");
     return L.stack[L.top - 1].ttnov();
 };
@@ -453,7 +450,7 @@ const lua_rawget = function(L, idx) {
 
     assert(t.ttistable(t), "table expected");
 
-    L.stack[L.top - 1] = lobject.table_index(t, L.stack[L.top - 1]);
+    L.stack[L.top - 1] = ltable.luaH_get(t.value, L.stack[L.top - 1]);
 
     return L.stack[L.top - 1].ttnov();
 };
@@ -550,7 +547,7 @@ const lua_getmetatable = function(L, objindex) {
     switch (obj.ttnov()) {
         case CT.LUA_TTABLE:
         case CT.LUA_TUSERDATA:
-            mt = obj.metatable;
+            mt = obj.value.metatable;
             break;
         default:
             mt = L.l_G.mt[obj.ttnov];
@@ -558,7 +555,7 @@ const lua_getmetatable = function(L, objindex) {
     }
 
     if (mt !== null && mt !== undefined) {
-        L.stack[L.top++] = mt;
+        L.stack[L.top++] = new TValue(CT.LUA_TTABLE, mt);
         assert(L.top <= L.ci.top, "stack overflow");
         res = true;
     }
@@ -587,20 +584,14 @@ const lua_getfield = function(L, idx, k) {
 
 const lua_geti = function(L, idx, n) {
     let t = index2addr(L, idx);
-    let slot = lobject.table_index(t, n);
-    if (!slot.ttisnil()) {
-        L.stack[L.top++] = slot;
-        assert(L.top <= L.ci.top, "stack overflow");
-    } else {
-        L.stack[L.top++] = new TValue(CT.LUA_TNUMINT, n);
-        assert(L.top <= L.ci.top, "stack overflow");
-        lvm.gettable(L, t, L.stack[L.top - 1], L.top - 1);
-    }
+    L.stack[L.top++] = new TValue(CT.LUA_TNUMINT, n);
+    assert(L.top <= L.ci.top, "stack overflow");
+    lvm.gettable(L, t, L.stack[L.top - 1], L.top - 1);
     return L.stack[L.top - 1].ttnov();
 };
 
 const lua_getglobal = function(L, name) {
-    return auxgetstr(L, L.l_G.l_registry.value.get(defs.LUA_RIDX_GLOBALS), name);
+    return auxgetstr(L, ltable.luaH_getint(L.l_G.l_registry.value, defs.LUA_RIDX_GLOBALS), name);
 };
 
 /*
@@ -656,7 +647,7 @@ const lua_rawlen = function(L, idx) {
         case CT.LUA_TUSERDATA:
             return o.len;
         case CT.LUA_TTABLE:
-            return ltable.luaH_getn(o);
+            return ltable.luaH_getn(o.value);
         default:
             return 0;
     }
@@ -819,8 +810,7 @@ const lua_load = function(L, reader, data, chunckname, mode) {
         let f = L.stack[L.top - 1].value; /* get newly created function */
         if (f.nupvalues >= 1) {  /* does it have an upvalue? */
             /* get global table from registry */
-            let reg = L.l_G.l_registry;
-            let gt = reg.value.get(defs.LUA_RIDX_GLOBALS);
+            let gt = ltable.luaH_getint(L.l_G.l_registry.value, defs.LUA_RIDX_GLOBALS);
             /* set global table as 1st upvalue of 'f' (may be LUA_ENV) */
             f.upvals[0].u.value = new TValue(gt.type, gt.value);
         }
@@ -936,14 +926,15 @@ const lua_error = function(L) {
 const lua_next = function(L, idx) {
     let t = index2addr(L, idx);
     assert(t.ttistable(), "table expected");
-    let more = ltable.luaH_next(L, t, L.top - 1);
+    let more = ltable.luaH_next(L, t.value, L.top - 1);
     if (more) {
         L.top++;
         assert(L.top <= L.ci.top, "stack overflow");
-    } else
+        return 1;
+    } else {
         L.top--;
-
-    return more;
+        return 0;
+    }
 };
 
 const lua_concat = function(L, n) {
diff --git a/src/lcode.js b/src/lcode.js
index 9fb7b06..690d07c 100644
--- a/src/lcode.js
+++ b/src/lcode.js
@@ -7,6 +7,7 @@ const llex     = require('./llex.js');
 const lobject  = require('./lobject.js');
 const lopcode  = require('./lopcodes.js');
 const lparser  = require('./lparser.js');
+const ltable   = require('./ltable.js');
 require('./lstate.js'); /* XXX: if this isn't here then things break on require("ltm") */
 const ltm      = require('./ltm.js');
 const lvm      = require('./lvm.js');
@@ -482,7 +483,7 @@ const freeexps = function(fs, e1, e2) {
 */
 const addk = function(fs, key, v) {
     let f = fs.f;
-    let idx = lobject.table_index(fs.ls.h, key);  /* index scanner table */
+    let idx = ltable.luaH_set(fs.ls.h.value, key);  /* index scanner table */
     if (idx && !idx.ttisnil()) {  /* is there an index there? */
         /* correct value? (warning: must distinguish floats from integers!) */
         if (idx.value < fs.nk && f.k[idx.value].ttype() === v.ttype() && f.k[idx.value].value === v.value)
@@ -490,7 +491,7 @@ const addk = function(fs, key, v) {
     }
     /* constant not found; create a new entry */
     let k = fs.nk;
-    lobject.table_newindex(fs.ls.h, key, new TValue(CT.LUA_TNUMINT, k));
+    idx.setivalue(k);
     f.k[k] = v;
     fs.nk++;
     return k;
diff --git a/src/ldebug.js b/src/ldebug.js
index d429457..d565829 100644
--- a/src/ldebug.js
+++ b/src/ldebug.js
@@ -180,12 +180,12 @@ const collectvalidlines = function(L, f) {
         assert(L.top <= L.ci.top, "stack overflow");
     } else {
         let lineinfo = f.l.p.lineinfo;
-        let t = new TValue(CT.LUA_TTABLE, ltable.luaH_new(L));
-        L.stack[L.top++] = t;
+        let t = ltable.luaH_new(L);
+        L.stack[L.top++] = new TValue(CT.LUA_TTABLE, t);
         assert(L.top <= L.ci.top, "stack overflow");
         let v = new TValue(CT.LUA_TBOOLEAN, true);
         for (let i = 0; i < f.l.p.length; i++)
-            lobject.table_newindex(t, lineinfo[i], v);
+            ltable.luaH_setint(t, lineinfo[i], v);
     }
 };
 
diff --git a/src/lobject.js b/src/lobject.js
index 784720b..d38e276 100644
--- a/src/lobject.js
+++ b/src/lobject.js
@@ -18,7 +18,6 @@ class TValue {
         this.id = tvalueCount++;
         this.type = type;
         this.value = value;
-        this.metatable = null;
     }
 
     /* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */
@@ -164,41 +163,6 @@ class TValue {
 const luaO_nilobject = new TValue(CT.LUA_TNIL, null);
 module.exports.luaO_nilobject = luaO_nilobject;
 
-const table_keyValue = function(key) {
-    // Those lua values are used by value, others by reference
-    if (key instanceof TValue) {
-        if ([CT.LUA_TNIL,
-            CT.LUA_TBOOLEAN,
-            CT.LUA_TSTRING,
-            CT.LUA_TTHREAD,
-            CT.LUA_TNUMINT].indexOf(key.type) > -1) {
-            key = key.value;
-        } else if ([CT.LUA_TSHRSTR, CT.LUA_TLNGSTR].indexOf(key.type) > -1) {
-            key = key.value.map(e => `${e}|`).join('');
-        }
-    } else if (typeof key === "string") { // To avoid
-        key = defs.to_luastring(key).map(e => `${e}|`).join('');
-    } else if (Array.isArray(key)) {
-        key = key.map(e => `${e}|`).join('');
-    }
-
-    return key;
-};
-
-const table_newindex = function(table, key, value) {
-    key = table_keyValue(key);
-
-    table.value.set(key, value);
-};
-
-const table_index = function(table, key) {
-    key = table_keyValue(key);
-
-    let v = table.value.get(key);
-
-    return v ? v : luaO_nilobject;
-};
-
 class LClosure {
 
     constructor(L, n) {
@@ -512,6 +476,3 @@ module.exports.luaO_str2num   = luaO_str2num;
 module.exports.luaO_utf8desc  = luaO_utf8desc;
 module.exports.luaO_utf8esc   = luaO_utf8esc;
 module.exports.numarith       = numarith;
-module.exports.table_index    = table_index;
-module.exports.table_keyValue = table_keyValue;
-module.exports.table_newindex = table_newindex;
diff --git a/src/lstate.js b/src/lstate.js
index 4b4aaa5..1b077d2 100644
--- a/src/lstate.js
+++ b/src/lstate.js
@@ -104,10 +104,10 @@ const stack_init = function(L1, L) {
 ** Create registry table and its predefined values
 */
 const init_registry = function(L, g) {
-    let registry = new lobject.TValue(CT.LUA_TTABLE, ltable.luaH_new(L));
-    g.l_registry = registry;
-    registry.value.set(defs.LUA_RIDX_MAINTHREAD, L);
-    registry.value.set(defs.LUA_RIDX_GLOBALS, new lobject.TValue(CT.LUA_TTABLE, ltable.luaH_new(L)));
+    let registry = ltable.luaH_new(L);
+    g.l_registry.sethvalue(registry);
+    ltable.luaH_setint(registry, defs.LUA_RIDX_MAINTHREAD, new lobject.TValue(CT.LUA_TTHREAD, L));
+    ltable.luaH_setint(registry, defs.LUA_RIDX_GLOBALS, new lobject.TValue(CT.LUA_TTABLE, ltable.luaH_new(L)));
 };
 
 /*
diff --git a/src/ltable.js b/src/ltable.js
index 432a91d..0d711b4 100644
--- a/src/ltable.js
+++ b/src/ltable.js
@@ -1,84 +1,167 @@
 /*jshint esversion: 6 */
 "use strict";
 
+const assert = require('assert');
+
 const defs    = require('./defs.js');
+const ldebug  = require('./ldebug.js');
 const lobject = require('./lobject.js');
 const CT      = defs.constant_types;
 
-
-const ordered_intindexes = function(table) {
-    return [...table.value.keys()]
-        .filter(e => typeof e === 'number' && e % 1 === 0 && e > 0)  // Only integer indexes
-        .sort(function (a, b) {
-            return a > b ? 1 : -1;
-        });
+/* converts strings (arrays) to a consistent map key */
+const hashstr = function(str) {
+    return str.map(e => `${e}|`).join('');
 };
 
-const ordered_indexes = function(table) {
-    return [...table.value.keys()]
-        .sort(function(a, b) {
-            if (typeof a !== "number" || a <= 0) return 1;
-            if (typeof b !== "number" || b <= 0) return -1;
-            return a > b ? 1 : -1;
-        });
+const table_hash = function(key) {
+    switch(key.type) {
+    case CT.LUA_TBOOLEAN:
+    case CT.LUA_TLIGHTUSERDATA: /* XXX: if user pushes conflicting lightuserdata then the table will do odd things */
+    case CT.LUA_TNUMFLT:
+    case CT.LUA_TNUMINT:
+    case CT.LUA_TTABLE:
+    case CT.LUA_TLCL:
+    case CT.LUA_TLCF:
+    case CT.LUA_TCCL:
+    case CT.LUA_TUSERDATA:
+    case CT.LUA_TTHREAD:
+        return key.value;
+    case CT.LUA_TSHRSTR:
+    case CT.LUA_TLNGSTR:
+        return hashstr(key.value);
+    default:
+        throw new Error("unknown key type: " + key.type);
+    }
 };
 
 const luaH_new = function(L) {
-    let t = new Map();
+    let t = {
+        strong: new Map(),
+        metatable: null
+    };
     return t;
 };
 
-/*
-** Try to find a boundary in table 't'. A 'boundary' is an integer index
-** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
-*/
-const luaH_getn = function(table) {
-    let indexes = ordered_intindexes(table);
-    let len = indexes.length;
+const getgeneric = function(t, hash) {
+    let v = t.strong.get(hash);
+    return v ? v.value : lobject.luaO_nilobject;
+};
 
-    // If first index != 1, length is 0
-    if (indexes[0] !== 1) return 0;
+const luaH_getint = function(t, key) {
+    assert(typeof key == "number");
+    return getgeneric(t, key);
+};
 
-    for (let i = 0; i < len; i++) {
-        let key = indexes[i];
+const luaH_getstr = function(t, key) {
+    assert(Array.isArray(key));
+    return getgeneric(t, hashstr(key));
+};
 
-        if (!lobject.table_index(table, key).ttisnil() // t[key] is non-nil
-            && (indexes[i + 1] - key > 1 || lobject.table_index(table, indexes[i + 1]).ttisnil())) { // gap with next key or next value is nil
-            return indexes[i];
-        }
-    }
+const luaH_get = function(t, key) {
+    assert(key instanceof lobject.TValue);
+    if (key.ttisnil())
+        return lobject.luaO_nilobject;
+    return getgeneric(t, table_hash(key));
+};
 
-    return 0;
+const setgeneric = function(t, hash, key) {
+    let v = t.strong.get(hash);
+    if (v)
+        return v.value;
+
+    let tv = new lobject.TValue(CT.LUA_TNIL, null);
+    t.strong.set(hash, {
+        key: key,
+        value: tv
+    });
+    return tv;
 };
 
-const luaH_next = function(L, table, keyI) {
-    let keyO = L.stack[keyI];
-    let key = lobject.table_keyValue(keyO);
-    let indexes = ordered_indexes(table);
+const luaH_setint = function(t, key, value) {
+    assert(typeof key == "number" && value instanceof lobject.TValue && key|0 === key);
+    let hash = key; /* table_hash known result */
+    let v = t.strong.get(hash);
+    if (v) {
+        let tv = v.value;
+        tv.setfrom(value);
+    } else {
+        t.strong.set(hash, {
+            key: new lobject.TValue(CT.LUA_TNUMINT, key),
+            value: new lobject.TValue(value.type, value.value)
+        });
+    }
+};
 
-    if (indexes.length === 0) return 0;
+const luaH_set = function(t, key) {
+    assert(key instanceof lobject.TValue);
+    let hash = table_hash(key);
+    return setgeneric(t, hash, new lobject.TValue(key.type, key.value));
+};
 
-    let i = indexes.indexOf(key);
+const luaH_delete = function(t, key) {
+    assert(key instanceof lobject.TValue);
+    let hash = table_hash(key);
+    t.strong.delete(hash);
+};
 
-    if ((i >= 0 || key === null) && i < indexes.length - 1) {
-        if (key === null) i = -1;
-        let nidx = indexes[i+1];
-        let tnidx = typeof nidx;
+/*
+** Try to find a boundary in table 't'. A 'boundary' is an integer index
+** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
+*/
+const luaH_getn = function(t) {
+    let i = 0;
+    let j = t.strong.size + 1; /* use known size of Map to bound search */
+    /* now do a binary search between them */
+    while (j - i > 1) {
+        let m = Math.floor((i+j)/2);
+        if (luaH_getint(t, m).ttisnil()) j = m;
+        else i = m;
+    }
+    return i;
+};
 
-        if (tnidx === 'number' && nidx % 1 === 0)
-            L.stack[keyI] = new lobject.TValue(CT.LUA_TNUMINT, indexes[i + 1]);
-        else if (tnidx === 'string')
-            L.stack[keyI] = new lobject.TValue(CT.LUA_TLNGSTR, indexes[i + 1].split('|').map(e => Number.parseInt(e)).slice(0, -1));
-        else
-            L.stack[keyI] = indexes[i + 1];
+/*
+** Javascript tables don't have any next-like primitive.
+** For each call of `next` this does a full iteration up to the item
+*/
+const luaH_next = function(L, table, keyI) {
+    let keyO = L.stack[keyI];
 
-        L.stack[keyI + 1] = table.value.get(indexes[i + 1]);
-        return 1;
+    let iterresult;
+    if (keyO.type === CT.LUA_TNIL) {
+        iterresult = table.strong.keys().next();
+    } else {
+        let hash = table_hash(keyO);
+
+        if (!table.strong.has(hash))
+            /* item not in table */
+            return ldebug.luaG_runerror(L, "invalid key to 'next'");
+
+        let indexes = table.strong.keys();
+        while (1) {
+            let e = indexes.next();
+            if (e.done)
+                throw "unreachable";
+            else if (e.value == hash)
+                break;
+        }
+        iterresult = indexes.next();
     }
+    if (iterresult.done)
+        return false;
 
-    return 0;
+    let entry = table.strong.get(iterresult.value);
+    L.stack[keyI] = new lobject.TValue(entry.key.type, entry.key.value);
+    L.stack[keyI+1] = new lobject.TValue(entry.value.type, entry.value.value);
+    return true;
 };
 
-module.exports.luaH_new = luaH_new;
-module.exports.luaH_next = luaH_next;
-module.exports.luaH_getn = luaH_getn;
+module.exports.luaH_delete  = luaH_delete;
+module.exports.luaH_get     = luaH_get;
+module.exports.luaH_getint  = luaH_getint;
+module.exports.luaH_getn    = luaH_getn;
+module.exports.luaH_getstr  = luaH_getstr;
+module.exports.luaH_set     = luaH_set;
+module.exports.luaH_setint  = luaH_setint;
+module.exports.luaH_new     = luaH_new;
+module.exports.luaH_next    = luaH_next;
diff --git a/src/ltablib.js b/src/ltablib.js
index 78c71e4..929cf4b 100644
--- a/src/ltablib.js
+++ b/src/ltablib.js
@@ -4,6 +4,7 @@ const lua     = require('./lua.js');
 const lapi    = require('./lapi.js');
 const lauxlib = require('./lauxlib.js');
 const llimit  = require('./llimit.js');
+const ltable  = require('./ltable.js');
 
 
 /*
@@ -175,32 +176,43 @@ const unpack = function(L) {
 
 // TODO: Maybe do the quicksort after all
 const auxsort = function(L) {
-    let t = lapi.index2addr(L, 1);
+    let a = [];
+    for (let i=1; ;i++) {
+        if(lua.lua_geti(L, 1, i) === lua.LUA_TNIL) {
+            lua.lua_pop(L, 1);
+            break;
+        }
+        let t = lapi.index2addr(L, -1);
+        a.push({
+            oldkey: i,
+            value: t
+        });
+        lua.lua_pop(L, 1);
+    }
 
+    let sort_function;
     if (lua.lua_type(L, 2) !== lua.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 + 1, e[1]) : true);
+        sort_function = function (a, b) {
+            return lapi.lua_compare_(L, a.value, b.value, lua.LUA_OPLT) === 1 ? -1 : 1;  /* a < b */
+        };
     } else {
-        [...t.value.entries()]
-            .sort(function (a, b) {
-                if (typeof a[0] !== 'number') return 1;
-                else if (typeof b[0] !== 'number') return -1;
-
-                lua.lua_pushvalue(L, 2);  /* push function */
-                lua.lua_pushtvalue(L, a[1]);  /* since we use Map.sort, a and b are not on the stack */
-                lua.lua_pushtvalue(L, b[1]);
-                lua.lua_call(L, 2, 1);  /* call function */
-                let res = lua.lua_toboolean(L, -1);  /* get result */
-                lua.lua_pop(L, 1);  /* pop result */
-                return res ? -1 : 1;
-            })
-            .forEach((e, i) => typeof e[0] === 'number' ? t.value.set(i + 1, e[1]) : true);
+        sort_function = function (a, b) {
+            lua.lua_pushvalue(L, 2);  /* push function */
+            lua.lua_pushtvalue(L, a.value);  /* since we use Map.sort, a and b are not on the stack */
+            lua.lua_pushtvalue(L, b.value);
+            lua.lua_call(L, 2, 1);  /* call function */
+            let res = lua.lua_toboolean(L, -1);  /* get result */
+            lua.lua_pop(L, 1);  /* pop result */
+            return res ? -1 : 1;
+        };
     }
+    a.sort(sort_function)
+        .forEach(function(e, i) {
+            if (e.oldkey != i+1) {
+                lua.lua_pushtvalue(L, e.value);
+                lua.lua_seti(L, 1, i+1);
+            }
+        });
 };
 
 const sort = function(L) {
diff --git a/src/ltm.js b/src/ltm.js
index c94d8f1..76e7b0c 100644
--- a/src/ltm.js
+++ b/src/ltm.js
@@ -7,6 +7,7 @@ const defs    = require('./defs.js');
 const lobject = require('./lobject.js');
 const ldo     = require('./ldo.js');
 const lstate  = require('./lstate.js');
+const ltable  = require('./ltable.js');
 const ldebug  = require('./ldebug.js');
 const lvm     = require('./lvm.js');
 const CT      = defs.constant_types;
@@ -69,9 +70,9 @@ const luaT_init = function(L) {
 */
 const luaT_objtypename = function(L, o) {
     let mt;
-    if ((o.ttistable() && (mt = o.metatable) !== null) ||
+    if ((o.ttistable() && (mt = o.value.metatable) !== null) ||
         (o.ttisfulluserdata() && (mt = o.value.metatable) !== null)) {
-        let name = lobject.table_index(mt, defs.to_luastring('__name', true));
+        let name = ltable.luaH_getstr(mt, defs.to_luastring('__name', true));
         if (name.ttisstring())
             return name.value;
     }
@@ -142,13 +143,13 @@ const luaT_gettmbyobj = function(L, o, event) {
     switch(o.ttnov()) {
         case CT.LUA_TTABLE:
         case CT.LUA_TUSERDATA:
-            mt = o.metatable;
+            mt = o.value.metatable;
             break;
         default:
             mt = L.l_G.mt[o.ttnov()];
     }
 
-    return mt ? lobject.table_index(mt, event) : lobject.luaO_nilobject;
+    return mt ? ltable.luaH_getstr(mt, event) : lobject.luaO_nilobject;
 };
 
 module.exports.TMS              = TMS;
diff --git a/src/lvm.js b/src/lvm.js
index 24822b6..3e70275 100644
--- a/src/lvm.js
+++ b/src/lvm.js
@@ -651,11 +651,11 @@ const luaV_execute = function(L) {
                     c = ci.u.l.savedpc[ci.pcOff++].Ax;
                 }
 
-                let table = L.stack[ra];
+                let h = L.stack[ra].value;
                 let last = ((c - 1) * OC.LFIELDS_PER_FLUSH) + n;
 
                 for (; n > 0; n--) {
-                    lobject.table_newindex(table, last--, L.stack[ra + n]);
+                    ltable.luaH_setint(h, last--, L.stack[ra + n]);
                 }
 
                 L.top = ci.top; /* correct top (in case of previous open call) */
@@ -973,7 +973,7 @@ const luaV_objlen = function(L, ra, rb) {
         case CT.LUA_TTABLE: {
             tm = ltm.luaT_gettmbyobj(L, rb, ltm.TMS.TM_LEN);
             if (!tm.ttisnil()) break;
-            L.stack[ra] = new TValue(CT.LUA_TNUMINT, ltable.luaH_getn(rb));
+            L.stack[ra] = new TValue(CT.LUA_TNUMINT, ltable.luaH_getn(rb.value));
             return;
         }
         case CT.LUA_TSHRSTR:
@@ -1051,10 +1051,10 @@ const gettable = function(L, table, key, ra, recur) {
         ldebug.luaG_runerror(L, defs.to_luastring("'__index' chain too long; possible loop", true));
 
     if (table.ttistable()) {
-        let element = lobject.table_index(table, key);
+        let element = ltable.luaH_get(table.value, key);
 
         if (!element.ttisnil()) {
-            L.stack[ra] = element;
+            L.stack[ra] = new TValue(element.type, element.value);
         } else {
             luaV_finishget(L, table, key, ra, element, recur);
         }
@@ -1094,10 +1094,10 @@ const settable = function(L, table, key, v, recur) {
         ldebug.luaG_runerror(L, defs.to_luastring("'__newindex' chain too long; possible loop", true));
 
     if (table.ttistable()) {
-        let element = lobject.table_index(table, key);
+        let element = ltable.luaH_set(table.value, key);
 
         if (!element.ttisnil()) {
-            lobject.table_newindex(table, key, v);
+            element.setfrom(v);
         } else {
             luaV_finishset(L, table, key, v, element, recur);
         }
@@ -1112,7 +1112,7 @@ const luaV_finishset = function(L, t, key, val, slot, recur) {
         assert(slot.ttisnil());
         tm = ltm.luaT_gettmbyobj(L, t, ltm.TMS.TM_NEWINDEX); // TODO: fasttm
         if (tm.ttisnil()) {
-            lobject.table_newindex(t, key, val);
+            slot.setfrom(val);
             return;
         }
     } else { /* not a table; check metamethod */
diff --git a/tests/lbaselib.js b/tests/lbaselib.js
index 137bc2f..0a77e5b 100644
--- a/tests/lbaselib.js
+++ b/tests/lbaselib.js
@@ -417,19 +417,19 @@ test('select', function (t) {
     }, "JS Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -3).entries()].map(e => e[1].value),
+        [...lua.lua_topointer(L, -3).strong.entries()].map(e => e[1].value.value),
         [3],
         "Correct element(s) on the stack"
     );
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -2).entries()].map(e => e[1].value).sort(),
+        [...lua.lua_topointer(L, -2).strong.entries()].map(e => e[1].value.value).sort(),
         [2, 3],
         "Correct element(s) on the stack"
     );
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()].map(e => e[1].value).sort(),
+        [...lua.lua_topointer(L, -1).strong.entries()].map(e => e[1].value.value).sort(),
         [2, 3],
         "Correct element(s) on the stack"
     );
diff --git a/tests/lexparse.js b/tests/lexparse.js
index 6c66df2..89ccc1f 100644
--- a/tests/lexparse.js
+++ b/tests/lexparse.js
@@ -740,13 +740,13 @@ test('SETTABLE, GETTABLE', function (t) {
     }, "Lua program ran without error");
 
     t.strictEqual(
-        lua.lua_topointer(L, -1).get(1).jsstring(),
+        lua.lua_topointer(L, -1).strong.get(1).value.jsstring(),
         "hello",
         "Program output is correct"
     );
 
     t.strictEqual(
-        lua.lua_topointer(L, -1).get('116|119|111|').jsstring(),
+        lua.lua_topointer(L, -1).strong.get('116|119|111|').value.jsstring(),
         "world",
         "Program output is correct"
     );
@@ -833,13 +833,13 @@ test('SETTABUP, GETTABUP', function (t) {
     }, "Lua program ran without error");
 
     t.strictEqual(
-        lua.lua_topointer(L, -1).get(1).jsstring(),
+        lua.lua_topointer(L, -1).strong.get(1).value.jsstring(),
         "hello",
         "Program output is correct"
     );
 
     t.strictEqual(
-        lua.lua_topointer(L, -1).get('116|119|111|').jsstring(),
+        lua.lua_topointer(L, -1).strong.get('116|119|111|').value.jsstring(),
         "world",
         "Program output is correct"
     );
@@ -922,7 +922,7 @@ test('SETLIST', function (t) {
     }, "Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()].map(e => e[1].value).sort(),
+        [...lua.lua_topointer(L, -1).strong.entries()].map(e => e[1].value.value).sort(),
         [1, 2, 3, 4, 5, 6, 7, 8, 9],
         "Program output is correct"
     );
@@ -965,7 +965,7 @@ test('Variable SETLIST', function (t) {
     }, "Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()].map(e => e[1].value).sort(),
+        [...lua.lua_topointer(L, -1).strong.entries()].map(e => e[1].value.value).sort(),
         [1, 2, 3, 4, 5, 6, 7, 8, 9],
         "Program output is correct"
     );
@@ -1003,7 +1003,7 @@ test('Long SETLIST', function (t) {
     }, "Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()].map(e => e[1].value).reverse(),
+        [...lua.lua_topointer(L, -1).strong.entries()].map(e => e[1].value.value).reverse(),
         [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5],
         "Program output is correct"
     );
diff --git a/tests/ltablib.js b/tests/ltablib.js
index 00ce7c8..15f9e57 100644
--- a/tests/ltablib.js
+++ b/tests/ltablib.js
@@ -11,9 +11,9 @@ const lua        = require('../src/lua.js');
 const inttable2array = function(t) {
     let a = [];
 
-    t.forEach(function (v, k) {
+    t.strong.forEach(function (v, k) {
         if (typeof k === 'number')
-            a[k - 1] = v;
+            a[k - 1] = v.value;
     });
 
     return a.map(e => e.value);
@@ -70,9 +70,9 @@ test('table.pack', function (t) {
     }, "JS Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()]
+        [...lua.lua_topointer(L, -1).strong.entries()]
             .filter(e => typeof e[0] === 'number') // Filter out the 'n' field
-            .map(e => e[1].value).reverse(),
+            .map(e => e[1].value.value).reverse(),
         [1, 2, 3],
         "Correct element(s) on the stack"
     );
@@ -145,9 +145,9 @@ test('table.insert', function (t) {
     }, "JS Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()]
+        [...lua.lua_topointer(L, -1).strong.entries()]
             .filter(e => typeof e[0] === 'number')
-            .map(e => e[1].value).sort(),
+            .map(e => e[1].value.value).sort(),
         [1, 2, 3, 4, 5],
         "Correct element(s) on the stack"
     );
@@ -179,9 +179,9 @@ test('table.remove', function (t) {
     }, "JS Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()]
+        [...lua.lua_topointer(L, -1).strong.entries()]
             .filter(e => typeof e[0] === 'number')
-            .map(e => e[1].value).sort(),
+            .map(e => e[1].value.value).sort(),
         [1, 2, 3, 4, null, null],
         "Correct element(s) on the stack"
     );
@@ -212,9 +212,9 @@ test('table.move', function (t) {
     }, "JS Lua program ran without error");
 
     t.deepEqual(
-        [...lua.lua_topointer(L, -1).entries()]
+        [...lua.lua_topointer(L, -1).strong.entries()]
             .filter(e => typeof e[0] === 'number')
-            .map(e => e[1].value).sort(),
+            .map(e => e[1].value.value).sort(),
         [1, 2, 3, 4, 5, 6],
         "Correct element(s) on the stack"
     );
diff --git a/tests/lvm.js b/tests/lvm.js
index 266e345..a6ab125 100644
--- a/tests/lvm.js
+++ b/tests/lvm.js
@@ -454,13 +454,13 @@ test('SETTABLE, GETTABLE', function (t) {
     console.log(L.stack[L.top - 1]);
 
     t.deepEqual(
-        L.stack[L.top - 1].value.get(1).jsstring(),
+        L.stack[L.top - 1].value.strong.get(1).value.jsstring(),
         "hello",
         "Program output is correct"
     );
 
     t.deepEqual(
-        L.stack[L.top - 1].value.get('116|119|111|').jsstring(), // "two"
+        L.stack[L.top - 1].value.strong.get('116|119|111|').value.jsstring(), // "two"
         "world",
         "Program output is correct"
     );
@@ -513,13 +513,13 @@ test('SETTABUP, GETTABUP', function (t) {
     }, "Program executed without errors");
 
     t.deepEqual(
-        L.stack[L.top - 1].value.get(1).jsstring(),
+        L.stack[L.top - 1].value.strong.get(1).value.jsstring(),
         "hello", // "hello"
         "Program output is correct"
     );
 
     t.deepEqual(
-        L.stack[L.top - 1].value.get('116|119|111|').jsstring(), // "two"
+        L.stack[L.top - 1].value.strong.get('116|119|111|').value.jsstring(), // "two"
         "world", // "world"
         "Program output is correct"
     );
@@ -568,7 +568,7 @@ test('SETLIST', function (t) {
     }, "Program executed without errors");
 
     t.deepEqual(
-        [...L.stack[L.top - 1].value.entries()].map(e => e[1].value).reverse(),
+        [...L.stack[L.top - 1].value.strong.entries()].map(e => e[1].value.value).reverse(),
         [1, 2, 3, 4, 5, 6, 7, 8, 9],
         "Program output is correct"
     );
@@ -594,7 +594,7 @@ test('Variable SETLIST', function (t) {
     }, "Program executed without errors");
 
     t.deepEqual(
-        [...L.stack[L.top - 1].value.entries()].map(e => e[1].value).reverse(),
+        [...L.stack[L.top - 1].value.strong.entries()].map(e => e[1].value.value).reverse(),
         [1, 2, 3, 4, 5, 6, 7, 8, 9],
         "Program output is correct"
     );
@@ -616,7 +616,7 @@ test('Long SETLIST', function (t) {
     }, "Program executed without errors");
 
     t.deepEqual(
-        [...L.stack[L.top - 1].value.entries()].map(e => e[1].value).reverse(),
+        [...L.stack[L.top - 1].value.strong.entries()].map(e => e[1].value.value).reverse(),
         [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5],
         "Program output is correct"
     );
@@ -640,7 +640,7 @@ test('Long SETLIST', function (t) {
 //     // }, "Program executed without errors");
 //
 //     t.deepEqual(
-//         [...L.stack[L.top - 1].value.entries()].map(e => e[1].value).reverse(),
+//         [...L.stack[L.top - 1].value.strong.entries()].map(e => e[1].value.value).reverse(),
 //         [1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 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2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5],
 //         "Program output is correct"
 //     );
-- 
cgit v1.2.3-54-g00ecf