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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenNamedProperty.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenNamedProperty.java | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenNamedProperty.java b/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenNamedProperty.java new file mode 100644 index 000000000..1683cb1bf --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenNamedProperty.java @@ -0,0 +1,410 @@ +/* gnu/regexp/RETokenNamedProperty.java + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.util.regex; + +import gnu.java.lang.CPStringBuilder; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +final class RETokenNamedProperty extends REToken +{ + String name; + boolean insens; + boolean negate; + Handler handler; + + // Grouped properties + static final byte[] LETTER = new byte[]{ Character.LOWERCASE_LETTER, + Character.UPPERCASE_LETTER, + Character.TITLECASE_LETTER, + Character.MODIFIER_LETTER, + Character.OTHER_LETTER + }; + + static final byte[] MARK = new byte[]{ Character.NON_SPACING_MARK, + Character.COMBINING_SPACING_MARK, + Character.ENCLOSING_MARK + }; + + static final byte[] SEPARATOR = new byte[]{ Character.SPACE_SEPARATOR, + Character.LINE_SEPARATOR, + Character.PARAGRAPH_SEPARATOR + }; + + static final byte[] SYMBOL = new byte[]{ Character.MATH_SYMBOL, + Character.CURRENCY_SYMBOL, + Character.MODIFIER_SYMBOL, + Character.OTHER_SYMBOL + }; + + static final byte[] NUMBER = new byte[]{ Character.DECIMAL_DIGIT_NUMBER, + Character.LETTER_NUMBER, + Character.OTHER_NUMBER + }; + + static final byte[] PUNCTUATION = new byte[]{ Character.DASH_PUNCTUATION, + Character.START_PUNCTUATION, + Character.END_PUNCTUATION, + Character.CONNECTOR_PUNCTUATION, + Character.OTHER_PUNCTUATION, + Character.INITIAL_QUOTE_PUNCTUATION, + Character.FINAL_QUOTE_PUNCTUATION + }; + + static final byte[] OTHER = new byte[]{ Character.CONTROL, + Character.FORMAT, + Character.PRIVATE_USE, + Character.SURROGATE, + Character.UNASSIGNED + }; + + RETokenNamedProperty (int subIndex, String name, boolean insens, + boolean negate) throws REException + { + super (subIndex); + this.name = name; + this.insens = insens; + this.negate = negate; + handler = getHandler (name); + } + + int getMinimumLength () + { + return 1; + } + + int getMaximumLength () + { + return 1; + } + + REMatch matchThis (CharIndexed input, REMatch mymatch) + { + char ch = input.charAt (mymatch.index); + boolean retval = matchOneChar (ch); + if (retval) + { + ++mymatch.index; + return mymatch; + } + return null; + } + + private boolean matchOneChar (char ch) + { + if (ch == CharIndexed.OUT_OF_BOUNDS) + return false; + + boolean retval = handler.includes (ch); + if (insens) + { + retval = retval || + handler.includes (toUpperCase (ch, unicodeAware)) || + handler.includes (toLowerCase (ch, unicodeAware)); + } + + if (negate) + retval = !retval; + return retval; + } + + boolean returnsFixedLengthMatches () + { + return true; + } + + int findFixedLengthMatches (CharIndexed input, REMatch mymatch, int max) + { + int index = mymatch.index; + int numRepeats = 0; + while (true) + { + if (numRepeats >= max) + break; + char ch = input.charAt (index++); + if (!matchOneChar (ch)) + break; + numRepeats++; + } + return numRepeats; + } + + void dump (CPStringBuilder os) + { + os.append ("\\").append (negate ? "P" : "p").append ("{" + name + "}"); + } + + private abstract static class Handler + { + public abstract boolean includes (char c); + } + + private Handler getHandler (String name) throws REException + { + if (name.equals ("Lower") || name.equals ("Upper") || + // name.equals("ASCII") || + name.equals ("Alpha") || + name.equals ("Digit") || + name.equals ("Alnum") || + name.equals ("Punct") || + name.equals ("Graph") || + name.equals ("Print") || + name.equals ("Blank") || + name.equals ("Cntrl") || + name.equals ("XDigit") || name.equals ("Space")) + { + return new POSIXHandler (name); + } + if (name.startsWith ("In")) + { + try + { + name = name.substring (2); + Character.UnicodeBlock block = + Character.UnicodeBlock.forName (name); + return new UnicodeBlockHandler (block); + } + catch (IllegalArgumentException e) + { + throw new REException ("Invalid Unicode block name: " + name, + REException.REG_ESCAPE, 0); + } + } + if (name.startsWith ("Is")) + { + name = name.substring (2); + } + + // "grouped properties" + if (name.equals ("L")) + return new UnicodeCategoriesHandler (LETTER); + if (name.equals ("M")) + return new UnicodeCategoriesHandler (MARK); + if (name.equals ("Z")) + return new UnicodeCategoriesHandler (SEPARATOR); + if (name.equals ("S")) + return new UnicodeCategoriesHandler (SYMBOL); + if (name.equals ("N")) + return new UnicodeCategoriesHandler (NUMBER); + if (name.equals ("P")) + return new UnicodeCategoriesHandler (PUNCTUATION); + if (name.equals ("C")) + return new UnicodeCategoriesHandler (OTHER); + + if (name.equals ("Mc")) + return new UnicodeCategoryHandler (Character.COMBINING_SPACING_MARK); + if (name.equals ("Pc")) + return new UnicodeCategoryHandler (Character.CONNECTOR_PUNCTUATION); + if (name.equals ("Cc")) + return new UnicodeCategoryHandler (Character.CONTROL); + if (name.equals ("Sc")) + return new UnicodeCategoryHandler (Character.CURRENCY_SYMBOL); + if (name.equals ("Pd")) + return new UnicodeCategoryHandler (Character.DASH_PUNCTUATION); + if (name.equals ("Nd")) + return new UnicodeCategoryHandler (Character.DECIMAL_DIGIT_NUMBER); + if (name.equals ("Me")) + return new UnicodeCategoryHandler (Character.ENCLOSING_MARK); + if (name.equals ("Pe")) + return new UnicodeCategoryHandler (Character.END_PUNCTUATION); + if (name.equals ("Pf")) + return new UnicodeCategoryHandler (Character.FINAL_QUOTE_PUNCTUATION); + if (name.equals ("Cf")) + return new UnicodeCategoryHandler (Character.FORMAT); + if (name.equals ("Pi")) + return new UnicodeCategoryHandler (Character.INITIAL_QUOTE_PUNCTUATION); + if (name.equals ("Nl")) + return new UnicodeCategoryHandler (Character.LETTER_NUMBER); + if (name.equals ("Zl")) + return new UnicodeCategoryHandler (Character.LINE_SEPARATOR); + if (name.equals ("Ll")) + return new UnicodeCategoryHandler (Character.LOWERCASE_LETTER); + if (name.equals ("Sm")) + return new UnicodeCategoryHandler (Character.MATH_SYMBOL); + if (name.equals ("Lm")) + return new UnicodeCategoryHandler (Character.MODIFIER_LETTER); + if (name.equals ("Sk")) + return new UnicodeCategoryHandler (Character.MODIFIER_SYMBOL); + if (name.equals ("Mn")) + return new UnicodeCategoryHandler (Character.NON_SPACING_MARK); + if (name.equals ("Lo")) + return new UnicodeCategoryHandler (Character.OTHER_LETTER); + if (name.equals ("No")) + return new UnicodeCategoryHandler (Character.OTHER_NUMBER); + if (name.equals ("Po")) + return new UnicodeCategoryHandler (Character.OTHER_PUNCTUATION); + if (name.equals ("So")) + return new UnicodeCategoryHandler (Character.OTHER_SYMBOL); + if (name.equals ("Zp")) + return new UnicodeCategoryHandler (Character.PARAGRAPH_SEPARATOR); + if (name.equals ("Co")) + return new UnicodeCategoryHandler (Character.PRIVATE_USE); + if (name.equals ("Zs")) + return new UnicodeCategoryHandler (Character.SPACE_SEPARATOR); + if (name.equals ("Ps")) + return new UnicodeCategoryHandler (Character.START_PUNCTUATION); + if (name.equals ("Cs")) + return new UnicodeCategoryHandler (Character.SURROGATE); + if (name.equals ("Lt")) + return new UnicodeCategoryHandler (Character.TITLECASE_LETTER); + if (name.equals ("Cn")) + return new UnicodeCategoryHandler (Character.UNASSIGNED); + if (name.equals ("Lu")) + return new UnicodeCategoryHandler (Character.UPPERCASE_LETTER); + if (name.equals ("all")) + return new Handler () + { + public boolean includes (char c) + { + return true; + } + }; + if (name.startsWith ("java")) + { + try + { + Method m = Character.class.getMethod ("is" + name.substring (4), + Character.TYPE); + return new JavaCategoryHandler (m); + } + catch (NoSuchMethodException e) + { + throw new REException ("Unsupported Java handler: " + name, e, + REException.REG_ESCAPE, 0); + } + } + throw new REException ("unsupported name " + name, REException.REG_ESCAPE, + 0); + } + + private static class POSIXHandler extends Handler + { + private RETokenPOSIX retoken; + public POSIXHandler (String name) + { + int posixId = RETokenPOSIX.intValue (name.toLowerCase ()); + if (posixId != -1) + retoken = new RETokenPOSIX (0, posixId, false, false); + else + throw new RuntimeException ("Unknown posix ID: " + name); + } + public boolean includes (char c) + { + return retoken.matchOneChar (c); + } + } + + private static class UnicodeCategoryHandler extends Handler + { + public UnicodeCategoryHandler (byte category) + { + this.category = (int) category; + } + private int category; + public boolean includes (char c) + { + return Character.getType (c) == category; + } + } + + private static class UnicodeCategoriesHandler extends Handler + { + public UnicodeCategoriesHandler (byte[]categories) + { + this.categories = categories; + } + private byte[] categories; + public boolean includes (char c) + { + int category = Character.getType (c); + for (int i = 0; i < categories.length; i++) + if (category == categories[i]) + return true; + return false; + } + } + + private static class UnicodeBlockHandler extends Handler + { + public UnicodeBlockHandler (Character.UnicodeBlock block) + { + this.block = block; + } + private Character.UnicodeBlock block; + public boolean includes (char c) + { + Character.UnicodeBlock cblock = Character.UnicodeBlock.of (c); + return (cblock != null && cblock.equals (block)); + } + } + + /** + * Handle the Java-specific extensions \p{javaX} where X + * is a method from Character of the form isX + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + */ + private static class JavaCategoryHandler extends Handler + { + private Method method; + + public JavaCategoryHandler (Method m) + { + this.method = m; + } + + public boolean includes (char c) + { + try + { + return (Boolean) method.invoke (null, c); + } + catch (IllegalAccessException e) + { + throw new InternalError ("Unable to access method " + method); + } + catch (InvocationTargetException e) + { + throw new InternalError ("Error invoking " + method); + } + } + } + +} |