Parsing JSON the hard way
This article was written by Aaron Patterson, a Ruby developer living in Seattle, WA. He’s been having fun writing Ruby for the past 7 years, and hopes to share his love of Ruby with you. Hey everybody! I hope you’re having a great day today! The sun has peeked out of the clouds for a bit today, so I’m doing great! In this article, we’re going to be looking at some compiler tools for use with Ruby.
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Dhaka
Introduction Dhaka is a set of tools for generating lexers and LALR(1) parsers for context-free grammars. It is written solely in Ruby with no native extensions and no dependencies. Its primary aim is to be easy to adapt and use for common parsing tasks. For example, if you need to parse and evaluate arithmetic or some other expression language with nested constructs in your Ruby application you m
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racc
Racc 㯠Ruby ã§ä½¿ãˆã‚‹ãƒ‘ーサジェãƒãƒ¬ãƒ¼ã‚¿ã§ã™ã€‚ã“れを使ã†ã¨è‡ªåˆ†ç”¨ã®ãƒ—ãƒã‚°ãƒ©ãƒ 言語を Ruby ã§è¨˜è¿°ã™ã‚‹ã®ã‚‚夢ã§ã¯ã‚ã‚Šã¾ã›ã‚“。ã—ã‹ã—ã€ä½¿ã„æ–¹ãŒã‚‚ã†ï¼‘ã¤åˆ†ã‹ã‚Šã¾ã›ã‚“。ã¨ã“ã‚ãŒã€é…布パッケージã«æ·»é™„ã—ã¦ã‚ã‚‹ calc.y を利用ã™ã‚‹ã¨ã€ãªã‚“ã¨ãªã使ã„æ–¹ã®ã‚³ãƒ„ãŒåˆ†ã‹ã‚‹ã®ã«æ°—ã¥ãã¾ã—ãŸã€‚Racc ã®ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã¯ã“ã“ã‹ã‚‰ã§ãã¾ã™ã€‚calc.y ã¯é…布パッケージ㮠racc-1.4.5-all/packages/racc/sample/ ã®ä¸ã«ã‚ã‚Šã¾ã™ã€‚ calc.y をコンパイルã™ã‚‹ 最åˆã« calc.y ã‹ã‚‰ Racc ãŒä½•ã‚’作るã“ã¨ãŒã§ãã‚‹ã‹ã‚’見るãŸã‚ã«ã€calc.y ã‚’ Racc ã§ã‚³ãƒ³ãƒ‘イルã—ã¦ã¿ã¾ã—ょã†ã€‚ã“ã®å ´åˆã‚¿ãƒ¼ã‚²ãƒƒãƒˆãƒ•ã‚¡ã‚¤ãƒ«ã®åå‰ã‚’ calc.rb ã«ã—ãŸã„ã®ã§ -o オプションをã¤ã‘ã¦ã‚³ãƒ³ãƒ‘イルã—ã¾ã™ã€‚ $ racc -o calc.rb calc.y 作æˆã•ã‚ŒãŸ ca
Racc
ダウンãƒãƒ¼ãƒ‰ æ—§ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãƒªã‚¹ãƒˆ オンラインマニュアル Ruby 用㮠LALR(1) パーザジェãƒãƒ¬ãƒ¼ã‚¿ã§ã™ã€‚ 生æˆã—ãŸãƒ‘ーサã¯ãã‚Œãªã‚Šã«é«˜é€Ÿã«å‹•ä½œã—ã¾ã™ã€‚ Racc ã§ç”Ÿæˆã—ãŸãƒ‘ーサã¯å‹•ä½œæ™‚ã«ãƒ©ãƒ³ã‚¿ã‚¤ãƒ モジュールãŒå¿…è¦ã§ã™ã€‚ Ruby 1.8 ã«ã¯ã“ã®ãƒ©ãƒ³ã‚¿ã‚¤ãƒ ãŒæœ€åˆã‹ã‚‰æ·»ä»˜ã•ã‚Œã¦ã„ã‚‹ã®ã§ 何も考ãˆãªãã¦å¤§ä¸ˆå¤«ã§ã™ãŒã€Ruby 1.6 以å‰ã‚’対象ã«ã™ã‚‹ã¨ã㯠racc -E ã§ãƒ‘ーサを生æˆã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ãªãŠã€Racc 1.4.x ã®ãƒ©ãƒ³ã‚¿ã‚¤ãƒ 㨠Ruby 1.8 添付㮠Racc ランタイムã¯ã€ ソースコード上ã§ã¯å¾®å¦™ã«é•ã„ãŒã‚ã‚Šã¾ã™ãŒã€å®Œå…¨ã«äº’æ›æ€§ãŒã‚ã‚Šã¾ã™ã€‚ çŠ¶æ³ ã‚‚ã†åŸºæœ¬çš„ãªéƒ¨åˆ†ã¯æž¯ã‚Œã¦ã„ã‚‹ã¯ãšã§ã™ã€‚ TODO ã¯ã¾ã ã„ãã¤ã‹ã‚ã‚Šã¾ã™ãŒã€æ°—æŒã¡ãŒä»–ã«ã„ã£ã¦ã‚‹ã®ã§ 当分ã¯å¤§ãã変更ã™ã‚‹ã¤ã‚‚ã‚Šã¯ã‚ã‚Šã¾ã›ã‚“。 Subversion レãƒã‚¸ãƒˆãƒª Subversion を使ã†ã¨ R
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