JavaScriptã®ãƒªãƒ•ã‚¡ã‚¯ã‚¿ãƒªãƒ³ã‚°ãƒ„ール「jscodeshiftã€ã®ä½¿ã„æ–¹ - QiitaDeleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article?
JavaScript ASTを始ã‚る最åˆã®ä¸€æ©
何ã‹JavaScriptã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’機械的ã«ãƒã‚§ãƒƒã‚¯ã™ã‚‹ãŸã‚ã®ãƒ„ールを作りãŸã„ã¨ã„ã†å ´åˆã«ã€JavaScriptã®ASTã¨ã„ã†ã‚‚ã®ã‚’触る必è¦ãŒå‡ºã¦ãã‚‹ã¨æ€ã„ã¾ã™ã€‚ ã“ã®è¨˜äº‹ã§ã¯ã€ãã®å–ã£æŽ›ã‹ã‚Šã¨ãªã‚‹æ¡ˆå†…ã‚’ç°¡å˜ã«ã¾ã¨ã‚ãŸã‚‚ã®ã§ã™ã€‚ ASTã¨ã¯ AST(Abstract Syntax Tree)ã¯ã‚³ãƒ¼ãƒ‰ã‚’パースã—ãŸæŠ½è±¡æ§‹æ–‡æœ¨ã®ã“ã¨ã€‚ JavaScriptã®å ´åˆã¯JavaScriptオブジェクト(JSON)ã¨ã—ã¦è¡¨ç¾ã•ã‚Œã¾ã™ã€‚ コード: { "range": [ 0, 10 ], "type": "Program", "body": [ { "range": [ 0, 10 ], "type": "VariableDeclaration", "declarations": [ { "range": [ 4, 9 ], "type": "VariableDeclarator", "id": {
AST時代ã®JavaScriptã§ã€ASTã«æ·±å…¥ã‚Šã›ãšã«ASTã¨ä»²è‰¯ãã™ã‚‹æ–¹æ³•ã‚’考ãˆã‚‹ - Qiita
ã¡ã‚‡ã£ã¨ã€ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’パースã—ã¦ã€ã¨ã‚る関数(require)を呼ã³å‡ºã—ã¦ä½œã£ãŸé–¢æ•°ã‚’使ã£ã¦ã„る箇所ã®ãƒ”ックアップをやã‚ã†ã¨æ€ã£ãŸã®ã§ã™ãŒã€ASTを直接扱ã†ã®ã¯ã„ã‚ã„ã‚ã‚ã‚“ã©ã„ã§ã™ã€‚ ソースコードをパースã—ã¦AST化ã™ã‚‹ã®ã¯acornã¨ã‹esprimaãŒæœ‰å。acornã¯ãƒ—ラグインã§JSXã«ã‚‚対応ã§ããŸã‚Šã™ã‚‹ã‚‰ã—ã„。 ã©ã®ãƒ‘ーサを使ã£ã¦ã‚‚ã€åŸºæœ¬çš„ã«ã¯ã“ã“ã®å®šç¾©ã«æº–æ‹ ã™ã‚‹ã¯ãš https://github.com/estree/estree/blob/master/es2015.md å供をãŸã©ã‚‹ã®ã«ã€DOMã®childrenã¿ãŸã„ãªã€ã€Œå供をå–å¾—ã™ã‚‹ã«ã¯ã“ã‚Œã ï¼ã€ã¨ã„ã†æ±ºã¾ã£ãŸæ–¹æ³•ã¯ãªã„。 ノードã”ã¨ã«åä¾›ã®åå‰ãŒé•ã†ã‚“ã ã‘ã©ã€å…¨éƒ¨ã®ãƒŽãƒ¼ãƒ‰ã”ã¨ã«åˆ†å²ã—ã¦æŽ¢ã•ãªã„ã¨ã„ã‘ãªã„ã®ï¼Ÿ var a = 10;ã ã¨å¤‰æ•°å®šç¾©(VariableDeclaration)扱ã„ã ã‘ã©ã€aãŒã™ã§ã«ã‚る状態ã ã¨a
GitHub - facebook/jscodeshift: A JavaScript codemod toolkit.
$ jscodeshift --help Usage: jscodeshift [OPTION]... PATH... or: jscodeshift [OPTION]... -t TRANSFORM_PATH PATH... or: jscodeshift [OPTION]... -t URL PATH... or: jscodeshift [OPTION]... --stdin < file_list.txt Apply transform logic in TRANSFORM_PATH (recursively) to every PATH. If --stdin is set, each line of the standard input is used as a path. Options: "..." behind an option means that it can be
TypeScriptã®ASTを使ã£ã¦ã‚³ãƒ¼ãƒ‰ã‚’解æžã—よㆠ- Qiita
TypeScriptã®ASTã‚’æ“作ã™ã‚‹æ–¹æ³•ãŒã€GitHubã®Wikiã«å…¬é–‹ã•ã‚Œã¦ã„ã¾ã—ãŸã€‚ã“れを使ãˆã°,TypeScriptã®ã‚³ãƒ¼ãƒ‰ã‚’解æžã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ 準備 TypeScriptã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« npm install typescriptを実行ã—TypeScriptã‚’å–å¾—ã—ã¾ã™ã€‚ tsconfig.jsonã‚’è¨å®šã™ã‚‹(Atomを利用ã—ã¦ã„ã‚‹å ´åˆ) ./node_modules/typescript/bin/typescript.d.tsã‚’filesGlobã«è¿½åŠ ã™ã‚‹ã“ã¨ã§ã€TypeScriptã®ASTã®APIã®ã‚³ãƒ¼ãƒ‰è£œå®ŒãŒå¯èƒ½ã¨ãªã‚Šã¾ã™(./node_modules/typescript/bin以下ã®d.tsãƒ•ã‚¡ã‚¤ãƒ«ã‚’è¿½åŠ ã™ã‚‹ã¨ã€AtomãŒé‡ããªã‚Šã‚³ãƒ¼ãƒ‰è£œå®Œã¯ä½¿ã„物ã«ãªã‚Šã¾ã›ã‚“) { "version": "1.4.1", "compilerOptions": { "target"
[2015-02] 最近ã®JavaScript AST標準化ã®å‹•ã
以å‰æ›¸ã„ãŸè¨˜äº‹ã‹ã‚‰ã®ã©ã‚“ãªæ„Ÿã˜ã®å‹•ããŒã‚ã£ãŸã®ã‹ã¾ã¨ã‚ãŸã‚‚ã®ã§ã™ã€‚ 最近気ã«ãªã£ãŸJavaScript AST周りã®å‹•ã | Web Scratch å‰å›žã®è¨˜äº‹ 2015å¹´ã®1月å‰å¾Œã®å†…容ãŒä¸å¿ƒã§ã™ã€‚ å‰å›žã®ã«æ¯”ã¹ã€JavaScriptã®ã‚¨ã‚³ã‚·ã‚¹ãƒ†ãƒ ã®æ ¹å¹¹ã§ã‚‚ã‚るパーサやASTã®ä»•æ§˜ã¾ã‚ã‚Šã«ã¤ã„ã¦ã®å‹•ããŒæœ€è¿‘活発ãªã®ã§ã€ãã®è¾ºã‚’ä¸å¿ƒã«ã¾ã¨ã‚ã¦ã„ã¾ã™ã€‚ RReverser RReverserã•ã‚“ã¯ã“ã“最近ã®JavaScript ASTã«é–¢ä¿‚ã™ã‚‹ã¨ã“ã‚ãªã‚‰ã©ã“ã§ã‚‚ã¿ã‹ã‘ã‚‹ã¨æ€ã†ã®ã§ç´¹ä»‹ã€‚ 主ã«acornã®ã‚³ãƒŸãƒƒã‚¿ãƒ¼ã§ã‚‚ã‚ã‚Šã¾ã™ãŒã€å¾Œã»ã©å‡ºã¦ãã‚‹ESTreeã‚„Babelãªã©è‰²ã€…ãªã¨ã“ã‚ã§æ´»å‹•ã—ã¦ã„ã¾ã™ã€‚ ã¾ãŸasterã¨ã„ã†ASTã®åŠ¹çŽ‡çš„ã«å‡¦ç†ã§ãるツールãƒã‚§ã‚¤ãƒ³ã‚’出ã—ãŸã‚Šã—ã¦ã„ã¾ã™ã€‚ AST周りã§ã‚ˆã見る人やパーサをã„ã‹ã«ã¾ã¨ã‚ã¦ã‚ã‚Šã¾ã™ã€‚ JavaScript AST Links. esto
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