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JavaCCã«é–¢ã™ã‚‹t_itaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (6)

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Mastering Visitor Pattern by jtree(JavaCC)
Javaã®å—å¥è§£æžã€æ§‹æ–‡è§£æžãƒ„ãƒ¼ãƒ«ã«ã€JavaCCï¼ˆJava Compiler Compilerï¼‰ã¨ã„ã†ãƒ„ãƒ¼ãƒ«ãŒã‚ã‚Šã¾ã™ã€‚ç°¡å˜ã«è¨€ã†ãªã‚‰ã°ã€Unixã®ä»£è¡¨çš„ãªãƒ„ãƒ¼ãƒ«ã§ã‚ã‚‹ã€lex/yacc(flex/bison)ã®Javaç‰ˆã§ã™ãã€‚ ã“ã®JavaCCã®ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã«ã¯ã€jjtreeã¨ã„ã†æ§‹æ–‡æœ¨ï¼ˆSyntax Treeï¼‰ã‚’ç”Ÿæˆã™ã‚‹ãŸã‚ã®ã‚³ãƒ¼ãƒ‰ã‚’è‡ªå‹•ç”Ÿæˆã™ã‚‹ä¾¿åˆ©ãªãƒ„ãƒ¼ãƒ«ãŒæ·»ä»˜ã•ã‚Œã¦ã„ã¾ã™ã€‚Syntax Treeã¯ã€æ§‹æ–‡ã‚’æœ¨æ§‹é€ ã§æ§‹æˆã—ãŸã‚‚ã®ã§ã‚ã‚Šã€Interpreterãƒ‘ã‚¿ãƒ¼ãƒ³ã‚’åˆ©ç”¨ã—ãŸã‚³ãƒ³ãƒã‚¸ãƒƒãƒˆæ§‹é€ ã«ãªã£ã¦ã„ã¾ã™ã€‚ jjtreeã®ç‰¹ç†ã™ã¹ãç‚¹ã¯ã€ã€æ§‹æ–‡æœ¨ã«å¯¾ã™ã‚‹å‡¦ç†ã‚’ã€Visitorã¸å§”è²ã™ã‚‹ã‚ˆã†ã«è¨è¨ˆã—ã¦ã„ã‚‹ã¨ã“ã‚ã§ã™ã€‚Visitorã®éª¸éª¨ã§ã‚‚ç´¹ä»‹ã—ãŸã‚ˆã†ã«ã€Visitorã¯ã€ã‚³ãƒ³ãƒã‚¸ãƒƒãƒˆæ§‹é€ ã‚’ã—ãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãƒ„ãƒªãƒ¼ã«å¯¾ã™ã‚‹å‡¦ç†ã‚’åˆ†é›¢ã—ã¦ç®¡ç†ã™ã‚‹ã®ã«éžå¸¸ã«æœ‰ç”¨ãªæ‰‹æ®µã§ã™ã€‚ ã“ã®ã‚³ãƒ¼ãƒŠãƒ¼ã§ã¯
t_ita 2010/01/25
JavaCC
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Scanning in JavaCC
t_ita 2010/01/25
JavaCC
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javacc: JavaCC Home
JavaCC 4.1 Released! JavaCC 4.1 is now available for download in the Documents & Files section: javacc-4.1.zip javacc-4.1.tar.gz Source code for the current release, archived versions and other contributions are also in the Documents & files section. Call for action Go ahead and submit issues and/or start discussion on the mailing lists for features and enhancements that you would like to s
t_ita 2010/01/25
JavaCC
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JavaCCã«ã‚ˆã‚‹æ§‹æ–‡è¨˜è¿°
1. ã¯ã˜ã‚ã« JavaCCï¼ˆJava Compiler Compilerï¼‰(*æ³¨1)ã«ã¤ã„ã¦èª¿ã¹ãŸã®ã§ã€æ›¸ãç•™ã‚ã¦ ãŠãã¾ã™ã€‚ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰å…ƒã‚„ã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—æ³•ã¯å¤‰ã‚ã‚‹å¯èƒ½æ€§ãŒã‚ã‚‹ã®ã§ã“ã“ã« ã¯æ›¸ãã¾ã›ã‚“ã®ã§ã€æ¤œç´¢ã—ã¦èª¿ã¹ã¦ãã ã•ã„(*æ³¨2)ã€‚ã¾ãŸã€ã€ŒJavaCCã®ä½¿ã„ æ–¹ã€ã«ã¤ã„ã¦ã¯ã€ä»–ã®ã©ãªãŸã‹ã«ã‚ˆã‚‹è§£èª¬ãŒï¼ˆè¤‡æ•°ï¼‰ã‚ã‚‹ã§ã—ã‚‡ã†ã‹ã‚‰ã€ã“ã“ ã§ã¯ã€é•ã£ãŸè¦³ç‚¹ã‹ã‚‰èª¬æ˜Žã—ã¾ã™ã€‚ ãã®ã€Œé•ã£ãŸè¦³ç‚¹ã€ã¨ã¯ã€JavaCCã®æ§‹æ–‡è¨˜è¿°ã®éƒ¨åˆ†ã ã‘ã«æ³¨ç›®ã—ã¦ã€ã“ã‚Œã‚’ æ‹¡å¼µBNFã ã¨ã¿ãªã™ç«‹å ´ã§ã™ã€‚JavaCCã¯å®Ÿç”¨çš„ãƒ‘ãƒ¼ã‚¶ãƒ¼ç”Ÿæˆå™¨ãªã®ã§ã€ãƒ‘ãƒ¼ã‚¶ãƒ¼ ã‚¯ãƒ©ã‚¹ã®ã‚³ãƒ¼ãƒ‰ã‚„ã€ã‚¢ã‚¯ã‚·ãƒ§ãƒ³ã¨å‘¼ã°ã‚Œã‚‹è§£æžæ™‚å‹•ä½œã‚’é€šå¸¸ã®Javaã‚³ãƒ¼ãƒ‰ã§è¨˜ è¿°ã—ã¾ã™ã€‚ãŒã€Javaã‚³ãƒ¼ãƒ‰ã®éƒ¨åˆ†ã‚’å–ã‚Šé™¤ã„ãŸéƒ¨åˆ†ã ã‘ã‚’è¦‹ã¦ã¿ã¾ã—ã‚‡ã†ã€ã£ ã¦ã“ã¨ã§ã™ã€‚JavaCCã®æ£çµ±ãª(?)ç´¹ä»‹ã¯ã¾ã£ãŸãæ„å›³ã—ã¦ã¾ã›ã‚“ã€‚ ä¾‹ã®å¤šãã¯ã€JavaCCã«ä»˜å±žã—ã¦ã„ã‚‹Jav
t_ita 2010/01/25
JavaCC
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JavaCC/Hello World
JavaCCã¯UNIXã®lex/yaccã®æµã‚Œã‚’ãã‚€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã§ã€æœ¬æ ¼çš„ãªã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®é–‹ç™ºã‹ã‚‰å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«ã®è§£æžã¨ã„ã£ãŸä¸€èˆ¬çš„ãªãƒ†ã‚ã‚¹ãƒˆå‡¦ç†ã¾ã§çµ¶å¤§ãªå¨åŠ›ã‚’ç™ºæ®ã™ã‚‹ãƒ„ãƒ¼ãƒ«ã§ã™ã€‚ ã“ã“ã§ã¯ç°¡å˜ãªãƒ—ãƒã‚°ãƒ©ãƒ ã®ä½œæˆã‚’é€šã—ã¦JavaCCã®ä½¿ã„æ–¹ã®æµã‚Œã‚’è¦‹ã¦ã„ãã¾ã™ã€‚ JavaCCã®å®Ÿè¡Œã«å¿…è¦ãªã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ãƒ»ã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—ã«ã¤ã„ã¦ã¯ã€ŒJavaCC/ã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—ã€ã‚’å‚ç…§ã—ã¦ãã ã•ã„ã€‚ JavaCCã§ã¯ã€å…¥åŠ›ã™ã‚‹æ–‡å—åˆ—ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã¤ã¾ã‚Šæ–‡æ³•ã‚’å®šç¾©ã—ãŸã‚‚ã®ãŒå…¥åŠ›ãƒ•ã‚¡ã‚¤ãƒ«ã¨ãªã‚Šã€ã“ã‚Œã‚’æ–‡æ³•ã‚’è§£é‡ˆã™ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ ã®Javaã‚½ãƒ¼ã‚¹ã«å¤‰æ›ã—ã¾ã™ã€‚ ã“ã“ã§ã¯HelloWorld.jjã¨ã„ã†ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ç”¨æ„ã—ã¾ã™ã€‚ ã“ã‚ŒãŒJavaCCã¸ã®å…¥åŠ›ã«ãªã‚Šã¾ã™ã€‚ HelloWorld.jj PARSER_BEGIN(HelloWorld) public class HelloWorld { public static
t_ita 2010/01/25
JavaCC
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t_ita 2010/01/25
JavaCC
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