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authorBenoit Giannangeli <benoit.giannangeli@boursorama.fr>2017-02-02 15:38:51 +0100
committerBenoit Giannangeli <benoit.giannangeli@boursorama.fr>2017-02-02 15:48:11 +0100
commit066719cf3db7f67d4373acb1398e9ca3a2dde3ed (patch)
tree44ce04e5517dead2ba97efc78588915d777738a6 /src
parentbad73671ca959f292becb8c68b73a14380aeeb56 (diff)
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readConstants
Diffstat (limited to 'src')
-rw-r--r--src/lua.js25
-rw-r--r--src/lundump.js64
2 files changed, 82 insertions, 7 deletions
diff --git a/src/lua.js b/src/lua.js
index f41991e..c496c33 100644
--- a/src/lua.js
+++ b/src/lua.js
@@ -11,6 +11,31 @@ const thread_status = {
LUA_ERRERR: 6
};
+const constant_types = {
+ LUA_TNONE: -1,
+ LUA_TNIL: 0,
+ LUA_TBOOLEAN: 1,
+ LUA_TLIGHTUSERDATA: 2,
+ LUA_TNUMBER: 3,
+ LUA_TSTRING: 4,
+ LUA_TTABLE: 5,
+ LUA_TFUNCTION: 6,
+ LUA_TUSERDATA: 7,
+ LUA_TTHREAD: 8,
+ LUA_NUMTAGS: 9
+};
+
+constant_types.LUA_TSHRSTR = constant_types.LUA_TSTRING | (0 << 4); /* short strings */
+constant_types.LUA_TLNGSTR = constant_types.LUA_TSTRING | (1 << 4); /* long strings */
+
+constant_types.LUA_TNUMFLT = constant_types.LUA_TNUMBER | (0 << 4); /* float numbers */
+constant_types.LUA_TNUMINT = constant_types.LUA_TNUMBER | (1 << 4); /* integer numbers */
+
+constant_types.LUA_TLCL = constant_types.LUA_TFUNCTION | (0 << 4); /* Lua closure */
+constant_types.LUA_TLCF = constant_types.LUA_TFUNCTION | (1 << 4); /* light C function */
+constant_types.LUA_TCCL = constant_types.LUA_TFUNCTION | (2 << 4); /* C closure */
+
module.exports = {
+ constant_types: constant_types,
thread_status: thread_status
}; \ No newline at end of file
diff --git a/src/lundump.js b/src/lundump.js
index c9481da..ce16312 100644
--- a/src/lundump.js
+++ b/src/lundump.js
@@ -1,13 +1,14 @@
/*jshint esversion: 6 */
"use strict";
-const DataView = require('buffer-dataview');
-const fs = require('fs');
-const assert = require('assert');
+const DataView = require('buffer-dataview');
+const fs = require('fs');
+const assert = require('assert');
-const lua_State = require('./lstate.js').lua_State;
-const LClosure = require('./lobject.js').LClosure;
-const Proto = require('./lfunc.js').Proto;
+const lua_State = require('./lstate.js').lua_State;
+const LClosure = require('./lobject.js').LClosure;
+const Proto = require('./lfunc.js').Proto;
+const constant_types = require('./lua.js').constant_types;
const LUAI_MAXSHORTLEN = 40;
@@ -113,6 +114,55 @@ class BytecodeParser {
f.code.push(this.readInstruction());
}
+ readConstants(f) {
+ let n = this.readInt();
+
+ for (let i = 0; i < n; i++) {
+ let t = this.readByte();
+
+ switch (t) {
+ case constant_types.LUA_TNIL:
+ f.k.push({
+ type: constant_types.LUA_TNIL,
+ value: null
+ });
+ console.log(`LUA_TNIL : ${f.k[f.k.length - 1].value}`);
+ break;
+ case constant_types.LUA_TBOOLEAN:
+ f.k.push({
+ type: constant_types.LUA_TBOOLEAN,
+ value: this.readByte()
+ });
+ console.log(`LUA_TBOOLEAN : ${f.k[f.k.length - 1].value}`);
+ break;
+ case constant_types.LUA_TNUMFLT:
+ f.k.push({
+ type: constant_types.LUA_TNUMFLT,
+ value: this.readNumber()
+ });
+ console.log(`LUA_TNUMFLT : ${f.k[f.k.length - 1].value}`);
+ break;
+ case constant_types.LUA_TNUMINT:
+ f.k.push({
+ type: constant_types.LUA_TNUMINT,
+ value: this.readInteger()
+ });
+ console.log(`LUA_TNUMINT : ${f.k[f.k.length - 1].value}`);
+ break;
+ case constant_types.LUA_TSHRSTR:
+ case constant_types.LUA_TLNGSTR:
+ f.k.push({
+ type: constant_types.LUA_TLNGSTR,
+ value: this.readString()
+ });
+ console.log(`LUA_TLNGSTR : ${f.k[f.k.length - 1].value}`);
+ break;
+ default:
+ throw new Error(`unrecognized constant '${t}'`);
+ }
+ }
+ }
+
readFunction(f, psource) {
f.source = this.readString();
if (f.source == null) /* no source in dump? */
@@ -133,7 +183,7 @@ class BytecodeParser {
`);
this.readCode(f);
- // this.readConstants(f);
+ this.readConstants(f);
// this.readUpvalues(f);
// this.readProtos(f);
// this.readDebug(f);