From 2977fe002407b6f86efa4ba5216f567082f33e45 Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Mon, 8 May 2017 12:32:08 +1000
Subject: Move string functions to centralised lstring.js

---
 src/lstring.js | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 src/lstring.js

(limited to 'src/lstring.js')

diff --git a/src/lstring.js b/src/lstring.js
new file mode 100644
index 0000000..34f988e
--- /dev/null
+++ b/src/lstring.js
@@ -0,0 +1,33 @@
+"use strict";
+
+const defs = require('./defs.js');
+
+const luaS_eqlngstr = function(a, b) {
+    return a == b || (a.length == b.length && a.join() == b.join());
+};
+
+/* converts strings (arrays) to a consistent map key */
+const luaS_hash = function(str) {
+    return str.map(e => `${e}|`).join('');
+};
+
+/* variant that takes ownership of array */
+const luaS_bless = function(L, str) {
+    return str;
+};
+
+/* makes a copy */
+const luaS_new = function(L, str) {
+    return luaS_bless(L, str.slice(0));
+};
+
+/* takes a js string */
+const luaS_newliteral = function(L, str) {
+    return luaS_bless(L, defs.to_luastring(str));
+};
+
+module.exports.luaS_eqlngstr   = luaS_eqlngstr;
+module.exports.luaS_hash       = luaS_hash;
+module.exports.luaS_bless      = luaS_bless;
+module.exports.luaS_new        = luaS_new;
+module.exports.luaS_newliteral = luaS_newliteral;
-- 
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