Lua 5.3 bytecode parser

1 files changed, 28 insertions, 0 deletions

diff --git a/src/bytecodeparser.js b/src/bytecodeparser.js
new file mode 100644
index 0000000..595158e
--- /dev/null
+++ b/src/bytecodeparser.js
@@ -0,0 +1,28 @@
+"use strict";
+
+const DataView = require('buffer-dataview');
+
+/**
+ * Parse Lua 5.3 bytecode
+ */
+class BytecodeParser {
+
+    constructor(dataView) {
+        this.dataView = dataView;
+        this.offset = 0;
+    }
+
+    _read(offset, nbytes) {
+        let bytes = new Uint8Array(nbytes);
+
+        for (let i = 0; i < nbytes; i++)
+            bytes[i] = this.dataView.getUint8(offset, true);
+
+        return bytes.length === 1 ? bytes[0] : bytes;
+    }
+
+    readByte() {
+        return read(this.offset++, 1);
+    }
+
+}
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