HTTPパーサにおけるSSE4.2最適化の威力と注意点 - Cybozu Inside Out | サイボウズエンジニアのブログ
こんにちは、サイボウズ・ラボの光成です。 PicoHTTPParserは@kazuhoさんたちが開発している高速なHTTPパーサです。 同じ作者によるHTTPサーバH2Oにも使われています。 11月4日の開発ブログによると、その時点でNode.jsなどに使われているhttp-parserの10倍程度の速度を誇るそうです（現在はhttp-parserも速度向上しその差は縮まりました。それでも4倍以上の差があるようです）。 該当ブログにはその高速化のためのノウハウが書かれていて大変興味深いです。ただIntel系CPUに搭載されているSIMD命令は用いられていませんでした。今回、@kazuhoさんと一緒に文字列処理専用のSSE4.2を用いることで1.7～1.9倍の高速化を達成しました（Improving Parser Performance using SSE Instructions (in
JavaScript AST Walker
JavaScript AST Walker JavaScript ASTを見て回る Agenda JavaScript ASTとは JS AST Structure JS AST as JSON Try JavaScript AST パーサ ジェネレーター ここまでのまとめ More detail コードカバレッジツール istanbul-html istanbul-karma blanket [ESLint](https://github.com/nzakas/eslint "ESLint") [reQUnit](https://github.com/azu/reQUnit "reQUnit") reQunit : before reQunit : after [regenerator](https://github.com/facebook/regenerator "regenerat
ブラウザの仕組み: 最新ウェブブラウザの内部構造
How browsers work Stay organized with collections Save and categorize content based on your preferences. Preface This comprehensive primer on the internal operations of WebKit and Gecko is the result of much research done by Israeli developer Tali Garsiel. Over a few years, she reviewed all the published data about browser internals and spent a lot of time reading web browser source code. She wrot
Tips for using Rhino as JavaScript Parser?
Hello:I've been using Rhino for some time as a parser for JavaScript. The lack of a complete grammar for ANTLR makes Rhino a good option for me. I'm using it for things like specialized documentation tools (JavaDoc- style docs for JavaScript classes) or other code analysis. I'm sure that you get a lot of these types of questions. What do you recommend? For example, I've been using 1.5 and 1.6 in t
John Resig - Pure JavaScript HTML Parser
Recently I was having a little bit of fun and decided to go about writing a pure JavaScript HTML parser. Some might remember my one project, env.js, which ported the native browser JavaScript features to the server-side (powered by Rhino). One thing that was lacking from that project was an HTML parser (it parsed strict XML only). I’ve been toying with the ability to port env.js to other platforms
Top Down Operator Precedence
Douglas Crockford 2007-08-05 Demonstration This is the companion file to my paper on Vaughan Pratt's Top Down Operator Precedence. The paper presents a parser for Simplified JavaScript that is written in Simplified Javascript. It is chapter 9 of Beautiful Code. This page loads that parser and runs the parser on itself. This page loads two JavaScript files:
Top Down Operator Precedence
Douglas Crockford 2007-02-21 This is chapter 9 of Beautiful Code. Introduction Vaughan Pratt presented "Top Down Operator Precedence" at the first annual Principles of Programming Languages Symposium in Boston in 1973. In the paper Pratt described a parsing technique that combines the best properties of Recursive Descent and Floyd's Operator Precedence. It is easy to use. It feels a lot like Recur
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GitHub - shellac/java-rdfa: RDFa Parser for java