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-rw-r--r--src/ldblib.js55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/ldblib.js b/src/ldblib.js
new file mode 100644
index 0000000..39b9574
--- /dev/null
+++ b/src/ldblib.js
@@ -0,0 +1,55 @@
+"use strict";
+
+const assert = require('assert');
+
+const lua = require('./lua.js');
+const lapi = require('./lapi.js');
+const lauxlib = require('./lauxlib.js');
+
+
+const dblib = {
+};
+
+// Only with Node
+if (typeof require === "function") {
+ let fs = false;
+ try {
+ fs = require('fs');
+ } catch (e) {}
+
+ if (fs) {
+ const readlineSync = require('readline-sync');
+ readlineSync.setDefaultOptions({
+ prompt: 'lua_debug> '
+ });
+
+ // TODO: if in browser, use a designated input in the DOM ?
+ const db_debug = function(L) {
+ for (;;) {
+ let input = readlineSync.prompt();
+
+ if (input === "cont")
+ return 0;
+
+ if (input.length === 0)
+ continue;
+
+ let buffer = lua.to_luastring(input);
+ if (lauxlib.luaL_loadbuffer(L, buffer, buffer.length, lua.to_luastring("=(debug command)"))
+ || lapi.lua_pcall(L, 0, 0, 0)) {
+ lauxlib.lua_writestringerror(`${lapi.lua_tojsstring(L, -1)}\n`);
+ }
+ lapi.lua_settop(L, 0); /* remove eventual returns */
+ }
+ };
+
+ dblib.debug = db_debug;
+ }
+}
+
+const luaopen_debug = function(L) {
+ lauxlib.luaL_newlib(L, dblib);
+ return 1;
+};
+
+module.exports.luaopen_debug = luaopen_debug;