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... public final class JavaCodeScanner extends AbstractJavaScanner { ... private static String[] fgKeywords= { "abstract", //$NON-NLS-1$ "break", //$NON-NLS-1$ "case", "catch", "class", "const", "continue", //$NON-NLS-5$ //$NON-NLS-4$ //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$ "default", "do", //$NON-NLS-2$ //$NON-NLS-1$ "else", "extends", //$NON-NLS-2$ //$NON-NLS-1$ "final", "finally", "for", //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$ "goto", //$NON-NLS-1$ "if", "implements", "import", "instanceof", "interface", //$NON-NLS-5$ //$NON-NLS-4$ //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$ "native", "new", //$NON-NLS-2$ //$NON-NLS-1$ "package", "private", "protected", "public", //$NON-NLS-4$ //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$ "return", //$NON-NLS-1$ "static", "super", "switch", "synchronized", //$NON-NLS-4$ //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$ "this", "throw", "throws", "transient", "try", //$NON-NLS-5$ //$NON-NLS-4$ //$NON-NLS-3$ //$NON-NLS-2$ //$NON-NLS-1$ "volatile", //$NON-NLS-1$ "while", //$NON-NLS-1$ // ************** for optimistic try ************** "__optimistic__" // ************************************************* }; private static String[] fgNewKeywords= { "assert" }; //$NON-NLS-1$ ...

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};

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Map colors = new HashMap();
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... public interface IJavaPartitions { public final static String JAVA_SINGLE_LINE_COMMENT= "__java_singleline_comment"; //$NON-NLS-1$ public final static String JAVA_MULTI_LINE_COMMENT= "__java_multiline_comment"; //$NON-NLS-1$ public final static String JAVA_DOC= "__java_javadoc"; //$NON-NLS-1$ public final static String JAVA_STRING= "__java_string"; //$NON-NLS-1$ public final static String JAVA_CHARACTER= "__java_character"; //$NON-NLS-1$ // ************** for map initializer ************** public final static String JAVA_MAP_INITIALIZER= JAVA_MULTI_LINE_COMMENT ; // ************************************************* }

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  ... public class FastJavaPartitionScanner implements IPartitionTokenScanner, IJavaPartitions { // states private static final int JAVA= 0; private static final int SINGLE_LINE_COMMENT= 1; private static final int MULTI_LINE_COMMENT= 2; private static final int JAVADOC= 3; private static final int CHARACTER= 4; private static final int STRING= 5; // ************** for map initializer ************** private static final int MAP_INITIALIZER = 6; // ************************************************* // beginning of prefixes and postfixes private static final int NONE= 0; private static final int BACKSLASH= 1; // postfix for STRING and CHARACTER private static final int SLASH= 2; // prefix for SINGLE_LINE or MULTI_LINE or JAVADOC private static final int SLASH_STAR= 3; // prefix for MULTI_LINE_COMMENT or JAVADOC private static final int SLASH_STAR_STAR= 4; // prefix for MULTI_LINE_COMMENT or JAVADOC private static final int STAR= 5; // postfix for MULTI_LINE_COMMENT or JAVADOC private static final int CARRIAGE_RETURN=6; // postfix for STRING, CHARACTER and SINGLE_LINE_COMMENT // ************** for map initializer ************** private static final int PERCENT=7; private static final int PLUS=8; // ************************************************* /** The scanner. */ private final BufferedDocumentScanner fScanner= new BufferedDocumentScanner(1000); // faster implementation ...

• IToken[] fTokens (63¹ÔÌÜ) ¤Ë¾åµ­¤ÇÄɲä·¤¿¥¹¥¿¥Æ¥£¥Ã¥¯ÊÑ¿ô¤òÄɲÃ

  ... private final IToken[] fTokens= new IToken[] { new Token(null), new Token(JAVA_SINGLE_LINE_COMMENT), new Token(JAVA_MULTI_LINE_COMMENT), new Token(JAVA_DOC), new Token(JAVA_CHARACTER), new Token(JAVA_STRING), // ************** for map initializer ************** new Token(JAVA_MAP_INITIALIZER) // ************************************************* }; ...

• nextToken ¥á¥½¥Ã¥É(75¹ÔÌÜ) ¤Î¥­¥ã¥é¥¯¥¿¤ÎȽÄêÉôʬ¤Ë¥Ñ¡¼¥»¥ó¥È¤òȽÄꤹ¤ë ¥³¡¼¥É¤òÄɲÃ(190¹ÔÌܶáÊÕ)

  ... public IToken nextToken() { ... while (true) { ... switch (ch) { ... default: if (!fgEmulate && fLast == CARRIAGE_RETURN) { switch (fState) { case SINGLE_LINE_COMMENT: case CHARACTER: case STRING: int last; int newState; switch (ch) { case '/': last= SLASH; newState= JAVA; break; case '*': last= STAR; newState= JAVA; break; case '\'': last= NONE; newState= CHARACTER; break; case '"': last= NONE; newState= STRING; break; // ************** for map initializer ************** case '%': last= PERCENT; newState= JAVA; break; // ************************************************* case '\r': last= CARRIAGE_RETURN; newState= JAVA; break; case '\\': last= BACKSLASH; newState= JAVA; break; default: last= NONE; newState= JAVA; break; } fLast= NONE; // ignore fLast return preFix(fState, newState, last, 1); default: break; } } } ...

• nextToken ¥á¥½¥Ã¥É(75¹ÔÌÜ) ¤Î Java ¥×¥í¥°¥é¥àÃæ¤Ë½Ð¸½¤¹¤ë¥Ñ¡¼¥Æ¥£¥·¥ç¥ó ³«»Ï°ÌÃÖ¤ÎȽÄêÉôʬ¤Ë¥³¡¼¥É¤òÄɲÃ(252¹ÔÌܶáÊÕ)

  ... // states switch (fState) { case JAVA: switch (ch) { case '/': ... case '*': if (fLast == SLASH) { ... } else { consume(); break; } // ************** for map initializer ************** case '%': fTokenLength++; fLast= PERCENT; break; case '{': if (fLast == PERCENT) { if (fTokenLength - getLastLength(fLast) > 0) return preFix(JAVA, MAP_INITIALIZER, PLUS, 2); else { preFix(JAVA, MAP_INITIALIZER, PLUS, 2); fTokenOffset += fTokenLength; fTokenLength= fPrefixLength; break; } } else { consume(); break; } // ************************************************* case '\'': fLast= NONE; // ignore fLast if (fTokenLength > 0) return preFix(JAVA, CHARACTER, NONE, 1); else { preFix(JAVA, CHARACTER, NONE, 1); fTokenOffset += fTokenLength; fTokenLength= fPrefixLength; break; } case '"': ... default: consume(); break; } break; case SINGLE_LINE_COMMENT: consume(); break; case JAVADOC: ...

• nextToken ¥á¥½¥Ã¥É(75¹ÔÌÜ) ¤Ë¥Þ¥Ã¥×½é´ü²½»Ò¶è´Ö¤Î½ªÎ»È½Äê¤Î¾ò·ï¤òÄɲà (337¹ÔÌܶáÊÕ)

  ... case JAVADOC: ... case MULTI_LINE_COMMENT: switch (ch) { case '*': if (fLast == SLASH_STAR) { fLast= SLASH_STAR_STAR; fTokenLength++; fState= JAVADOC; } else { fTokenLength++; fLast= STAR; } break; case '/': if (fLast == STAR) { return postFix(MULTI_LINE_COMMENT); } else { consume(); break; } default: consume(); break; } break; // ************** for map initializer ************** case MAP_INITIALIZER: switch (ch) { case '}': return postFix(MAP_INITIALIZER); default: consume(); break; } break; // ************************************************* case STRING: switch (ch) { case '\\': fLast= (fLast == BACKSLASH) ? NONE : BACKSLASH; fTokenLength++; break; case '\"': if (fLast != BACKSLASH) { return postFix(STRING); } else { consume(); break; } default: consume(); break; } break; case CHARACTER: ... } } } ...

• getState ¥á¥½¥Ã¥É(442¹ÔÌÜ) ¤ÎÆâÍƼïÊÌȽÄêÉôʬ¤Ë¥Þ¥Ã¥×½é´ü²½»Ò¤Ë´Ø¤¹¤ë¤â ¤Î¤òÄɲÃ(461¹ÔÌܶáÊÕ)¡£

  ... private static final int getLastLength(int last) { switch (last) { default: return -1; case NONE: return 0; case CARRIAGE_RETURN: case BACKSLASH: case SLASH: case STAR: // ************** for map initializer ************** case PERCENT: // ************************************************* return 1; case SLASH_STAR: return 2; case SLASH_STAR_STAR: return 3; } } ...

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