v8-code-dump-parser

[![Build Status][travis-badge]][travis] [![Dependency Status][david-badge]][david]

Parse [V8][v8] dump generated by --print-code or --print-opt-code or stringify it back.

[v8]: https://code.google.com/p/v8-wiki/

[travis]: https://travis-ci.org/eush77/v8-code-dump-parser
[travis-badge]: https://travis-ci.org/eush77/v8-code-dump-parser.svg
[david]: https://david-dm.org/eush77/v8-code-dump-parser
[david-badge]: https://david-dm.org/eush77/v8-code-dump-parser.png

API

$3

$3

Parses string into a tree structure.

Turns this:

``
--- Raw source ---
(a, b) {
return a - b;
};

--- Optimized code ---
optimization_id = 0
source_position = 144
kind = OPTIMIZED_FUNCTION
name = sub
stack_slots = 1
Instructions (size = 111)
0x1649c54c3e80 0 55 push rbp
// ... more code ...
0x1649c54c3edb 91 90 nop

Deoptimization Input Data (deopt points = 4)
index ast id argc pc
0 3 0 35
1 3 0 -1
2 3 0 -1
3 3 0 -1

Safepoints (size = 19)
0x1649c54c3ea3 35 1 (sp -> fp) 0

RelocInfo (size = 14)
0x1649c54c3e9f code target (BUILTIN) (0x1649c5425f80)
0x1649c54c3ea7 position (164)
0x1649c54c3ecd runtime entry (deoptimization bailout 1)
0x1649c54c3ed2 runtime entry (deoptimization bailout 2)
0x1649c54c3ed7 runtime entry (deoptimization bailout 3)

--- End code ---
--- Raw source ---
// ... more ...
`

into this:

`js
[
{
source: "(a, b) {\n return a - b;\n};",
optimizedCode: {
optimization_id: "0",
source_position: "144",
kind: "OPTIMIZED_FUNCTION",
name: "sub",
stack_slots: "1",
instructions: "Instructions (size = 111)\n0x1649c54c3e80 0 55 push rbp\n// ... more code ...\n0x1649c54c3edb 91 90 nop
safepoints: "Safepoints (size = 19)\n0x1649c54c3ea3 35 1 (sp -> fp) 0",
relocInfo: "RelocInfo (size = 14)\n0x1649c54c3e9f code target (BUILTIN) (0x1649c5425f80)\n0x1649c54c3ea7 position (164)\n0x1649c54c3ecd runtime entry (deoptimization bailout 1)\n0x1649c54c3ed2 runtime entry (deoptimization bailout 2)\n0x1649c54c3ed7 runtime entry (deoptimization bailout 3)"
},
}
// ...
]
`

$3

Converts tree structure back into string.

Install

`
npm install v8-code-dump-parser
``

License

MIT