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/*
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* reserved comment block
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* DO NOT REMOVE OR ALTER!
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*/
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/*
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* Copyright 1999-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.sun.org.apache.xerces.internal.impl.xpath.regex;
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import com.sun.org.apache.xerces.internal.utils.SecuritySupport;
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import java.util.Locale;
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import java.util.MissingResourceException;
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import java.util.ResourceBundle;
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import java.util.Vector;
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/**
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* A Regular Expression Parser.
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*
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* @xerces.internal
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*
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* @version $Id: RegexParser.java,v 1.8 2010-11-01 04:39:54 joehw Exp $
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*/
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class RegexParser {
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static final int T_CHAR = 0;
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static final int T_EOF = 1;
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static final int T_OR = 2; // '|'
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static final int T_STAR = 3; // '*'
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static final int T_PLUS = 4; // '+'
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static final int T_QUESTION = 5; // '?'
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static final int T_LPAREN = 6; // '('
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static final int T_RPAREN = 7; // ')'
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static final int T_DOT = 8; // '.'
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static final int T_LBRACKET = 9; // '['
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static final int T_BACKSOLIDUS = 10; // '\'
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static final int T_CARET = 11; // '^'
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static final int T_DOLLAR = 12; // '$'
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static final int T_LPAREN2 = 13; // '(?:'
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static final int T_LOOKAHEAD = 14; // '(?='
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static final int T_NEGATIVELOOKAHEAD = 15; // '(?!'
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static final int T_LOOKBEHIND = 16; // '(?<='
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static final int T_NEGATIVELOOKBEHIND = 17; // '(?<!'
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static final int T_INDEPENDENT = 18; // '(?>'
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static final int T_SET_OPERATIONS = 19; // '(?['
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static final int T_POSIX_CHARCLASS_START = 20; // '[:' in a character class
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static final int T_COMMENT = 21; // '(?#'
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static final int T_MODIFIERS = 22; // '(?' [\-,a-z,A-Z]
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static final int T_CONDITION = 23; // '(?('
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static final int T_XMLSCHEMA_CC_SUBTRACTION = 24; // '-[' in a character class
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static class ReferencePosition {
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int refNumber;
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int position;
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ReferencePosition(int n, int pos) {
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this.refNumber = n;
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this.position = pos;
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}
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}
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int offset;
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String regex;
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int regexlen;
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int options;
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ResourceBundle resources;
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int chardata;
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int nexttoken;
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static protected final int S_NORMAL = 0;
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static protected final int S_INBRACKETS = 1;
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static protected final int S_INXBRACKETS = 2;
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int context = S_NORMAL;
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int parenOpened = 1;
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int parennumber = 1;
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boolean hasBackReferences;
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Vector references = null;
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int parenCount = 0;
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public RegexParser() {
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this.setLocale(Locale.getDefault());
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}
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public RegexParser(Locale locale) {
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this.setLocale(locale);
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}
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public void setLocale(Locale locale) {
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try {
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if (locale != null) {
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this.resources = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.xpath.regex.message", locale);
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}
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else {
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this.resources = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.xpath.regex.message");
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}
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}
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catch (MissingResourceException mre) {
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throw new RuntimeException("Installation Problem??? Couldn't load messages: "
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+ mre.getMessage());
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}
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}
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final ParseException ex(String key, int loc) {
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return new ParseException(this.resources.getString(key), loc);
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}
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protected final boolean isSet(int flag) {
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return (this.options & flag) == flag;
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}
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synchronized Token parse(String regex, int options) throws ParseException {
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this.options = options;
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this.offset = 0;
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this.setContext(S_NORMAL);
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this.parennumber = 1;
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this.parenOpened = 1;
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this.hasBackReferences = false;
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this.regex = regex;
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if (this.isSet(RegularExpression.EXTENDED_COMMENT))
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this.regex = REUtil.stripExtendedComment(this.regex);
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this.regexlen = this.regex.length();
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this.next();
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Token ret = this.parseRegex();
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if (this.offset != this.regexlen)
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throw ex("parser.parse.1", this.offset);
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if (parenCount < 0)
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throw ex("parser.factor.0", this.offset);
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if (this.references != null) {
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for (int i = 0; i < this.references.size(); i ++) {
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ReferencePosition position = (ReferencePosition)this.references.elementAt(i);
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if (this.parennumber <= position.refNumber)
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throw ex("parser.parse.2", position.position);
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}
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this.references.removeAllElements();
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}
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return ret;
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}
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/*
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public RegularExpression createRegex(String regex, int options) throws ParseException {
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Token tok = this.parse(regex, options);
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return new RegularExpression(regex, tok, this.parennumber, this.hasBackReferences, options);
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}
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*/
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protected final void setContext(int con) {
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this.context = con;
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}
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final int read() {
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return this.nexttoken;
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}
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final void next() {
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if (this.offset >= this.regexlen) {
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this.chardata = -1;
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this.nexttoken = T_EOF;
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return;
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}
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int ret;
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int ch = this.regex.charAt(this.offset++);
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this.chardata = ch;
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if (this.context == S_INBRACKETS) {
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// In a character class, this.chardata has one character, that is to say,
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// a pair of surrogates is composed and stored to this.chardata.
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switch (ch) {
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case '\\':
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ret = T_BACKSOLIDUS;
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if (this.offset >= this.regexlen)
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throw ex("parser.next.1", this.offset-1);
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this.chardata = this.regex.charAt(this.offset++);
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break;
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case '-':
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// Allow character class subtraction (regardless of whether we are in
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// XML Schema mode or not)
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if (this.offset < this.regexlen && this.regex.charAt(this.offset) == '[') {
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this.offset++;
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ret = T_XMLSCHEMA_CC_SUBTRACTION;
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} else
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ret = T_CHAR;
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break;
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case '[':
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if (!this.isSet(RegularExpression.XMLSCHEMA_MODE)
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&& this.offset < this.regexlen && this.regex.charAt(this.offset) == ':') {
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this.offset++;
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ret = T_POSIX_CHARCLASS_START;
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break;
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} // Through down
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default:
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if (REUtil.isHighSurrogate(ch) && this.offset < this.regexlen) {
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int low = this.regex.charAt(this.offset);
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if (REUtil.isLowSurrogate(low)) {
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this.chardata = REUtil.composeFromSurrogates(ch, low);
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this.offset ++;
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}
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}
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ret = T_CHAR;
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}
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this.nexttoken = ret;
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return;
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}
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switch (ch) {
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case '|': ret = T_OR; break;
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case '*': ret = T_STAR; break;
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case '+': ret = T_PLUS; break;
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case '?': ret = T_QUESTION; break;
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case ')': ret = T_RPAREN; break;
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case '.': ret = T_DOT; break;
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case '[': ret = T_LBRACKET; break;
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case '^':
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if (this.isSet(RegularExpression.XMLSCHEMA_MODE)) {
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ret = T_CHAR;
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}
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else {
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ret = T_CARET;
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}
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break;
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case '$':
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if (this.isSet(RegularExpression.XMLSCHEMA_MODE)) {
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ret = T_CHAR;
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}
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else {
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ret = T_DOLLAR;
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}
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break;
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case '(':
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ret = T_LPAREN;
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parenCount++;
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if (this.offset >= this.regexlen)
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break;
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if (this.regex.charAt(this.offset) != '?')
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break;
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if (++this.offset >= this.regexlen)
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throw ex("parser.next.2", this.offset-1);
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ch = this.regex.charAt(this.offset++);
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switch (ch) {
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case ':': ret = T_LPAREN2; break;
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case '=': ret = T_LOOKAHEAD; break;
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case '!': ret = T_NEGATIVELOOKAHEAD; break;
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case '[': ret = T_SET_OPERATIONS; break;
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case '>': ret = T_INDEPENDENT; break;
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case '<':
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if (this.offset >= this.regexlen)
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throw ex("parser.next.2", this.offset-3);
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ch = this.regex.charAt(this.offset++);
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if (ch == '=') {
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ret = T_LOOKBEHIND;
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} else if (ch == '!') {
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ret = T_NEGATIVELOOKBEHIND;
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} else
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throw ex("parser.next.3", this.offset-3);
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break;
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case '#':
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while (this.offset < this.regexlen) {
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ch = this.regex.charAt(this.offset++);
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if (ch == ')') break;
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}
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if (ch != ')')
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throw ex("parser.next.4", this.offset-1);
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ret = T_COMMENT;
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break;
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default:
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if (ch == '-' || 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z') {// Options
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this.offset --;
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ret = T_MODIFIERS;
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break;
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} else if (ch == '(') { // conditional
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ret = T_CONDITION; // this.offsets points the next of '('.
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break;
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}
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throw ex("parser.next.2", this.offset-2);
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}
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break;
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case '\\':
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ret = T_BACKSOLIDUS;
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if (this.offset >= this.regexlen)
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throw ex("parser.next.1", this.offset-1);
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this.chardata = this.regex.charAt(this.offset++);
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break;
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default:
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ret = T_CHAR;
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}
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this.nexttoken = ret;
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}
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/**
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* regex ::= term (`|` term)*
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* term ::= factor+
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* factor ::= ('^' | '$' | '\A' | '\Z' | '\z' | '\b' | '\B' | '\<' | '\>'
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* | atom (('*' | '+' | '?' | minmax ) '?'? )?)
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* | '(?=' regex ')' | '(?!' regex ')' | '(?<=' regex ')' | '(?<!' regex ')'
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* atom ::= char | '.' | range | '(' regex ')' | '(?:' regex ')' | '\' [0-9]
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* | '\w' | '\W' | '\d' | '\D' | '\s' | '\S' | category-block
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*/
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Token parseRegex() throws ParseException {
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Token tok = this.parseTerm();
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Token parent = null;
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while (this.read() == T_OR) {
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this.next(); // '|'
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if (parent == null) {
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parent = Token.createUnion();
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parent.addChild(tok);
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tok = parent;
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}
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tok.addChild(this.parseTerm());
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}
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return tok;
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}
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/**
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* term ::= factor+
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*/
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Token parseTerm() throws ParseException {
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int ch = this.read();
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Token tok = null;
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if (ch == T_OR || ch == T_RPAREN || ch == T_EOF) {
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tok = Token.createEmpty();
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} else {
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tok = this.parseFactor();
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Token concat = null;
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while ((ch = this.read()) != T_OR && ch != T_RPAREN && ch != T_EOF) {
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if (concat == null) {
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concat = Token.createConcat();
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concat.addChild(tok);
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tok = concat;
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}
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concat.addChild(this.parseFactor());
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//tok = Token.createConcat(tok, this.parseFactor());
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}
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}
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if (ch == T_RPAREN) {
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parenCount--;
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}
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return tok;
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}
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// ----------------------------------------------------------------
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Token processCaret() throws ParseException {
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this.next();
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return Token.token_linebeginning;
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}
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Token processDollar() throws ParseException {
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this.next();
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return Token.token_lineend;
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}
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Token processLookahead() throws ParseException {
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this.next();
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Token tok = Token.createLook(Token.LOOKAHEAD, this.parseRegex());
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if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
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this.next(); // ')'
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return tok;
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}
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Token processNegativelookahead() throws ParseException {
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this.next();
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Token tok = Token.createLook(Token.NEGATIVELOOKAHEAD, this.parseRegex());
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if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
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this.next(); // ')'
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return tok;
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}
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Token processLookbehind() throws ParseException {
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this.next();
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Token tok = Token.createLook(Token.LOOKBEHIND, this.parseRegex());
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if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
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this.next(); // ')'
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return tok;
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}
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Token processNegativelookbehind() throws ParseException {
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this.next();
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Token tok = Token.createLook(Token.NEGATIVELOOKBEHIND, this.parseRegex());
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if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
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this.next(); // ')'
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return tok;
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}
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Token processBacksolidus_A() throws ParseException {
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this.next();
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return Token.token_stringbeginning;
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}
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Token processBacksolidus_Z() throws ParseException {
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this.next();
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return Token.token_stringend2;
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}
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Token processBacksolidus_z() throws ParseException {
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this.next();
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return Token.token_stringend;
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}
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Token processBacksolidus_b() throws ParseException {
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this.next();
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|
406 |
return Token.token_wordedge;
|
|
407 |
}
|
|
408 |
Token processBacksolidus_B() throws ParseException {
|
|
409 |
this.next();
|
|
410 |
return Token.token_not_wordedge;
|
|
411 |
}
|
|
412 |
Token processBacksolidus_lt() throws ParseException {
|
|
413 |
this.next();
|
|
414 |
return Token.token_wordbeginning;
|
|
415 |
}
|
|
416 |
Token processBacksolidus_gt() throws ParseException {
|
|
417 |
this.next();
|
|
418 |
return Token.token_wordend;
|
|
419 |
}
|
|
420 |
Token processStar(Token tok) throws ParseException {
|
|
421 |
this.next();
|
|
422 |
if (this.read() == T_QUESTION) {
|
|
423 |
this.next();
|
|
424 |
return Token.createNGClosure(tok);
|
|
425 |
} else
|
|
426 |
return Token.createClosure(tok);
|
|
427 |
}
|
|
428 |
Token processPlus(Token tok) throws ParseException {
|
|
429 |
// X+ -> XX*
|
|
430 |
this.next();
|
|
431 |
if (this.read() == T_QUESTION) {
|
|
432 |
this.next();
|
|
433 |
return Token.createConcat(tok, Token.createNGClosure(tok));
|
|
434 |
} else
|
|
435 |
return Token.createConcat(tok, Token.createClosure(tok));
|
|
436 |
}
|
|
437 |
Token processQuestion(Token tok) throws ParseException {
|
|
438 |
// X? -> X|
|
|
439 |
this.next();
|
|
440 |
Token par = Token.createUnion();
|
|
441 |
if (this.read() == T_QUESTION) {
|
|
442 |
this.next();
|
|
443 |
par.addChild(Token.createEmpty());
|
|
444 |
par.addChild(tok);
|
|
445 |
} else {
|
|
446 |
par.addChild(tok);
|
|
447 |
par.addChild(Token.createEmpty());
|
|
448 |
}
|
|
449 |
return par;
|
|
450 |
}
|
|
451 |
boolean checkQuestion(int off) {
|
|
452 |
return off < this.regexlen && this.regex.charAt(off) == '?';
|
|
453 |
}
|
|
454 |
Token processParen() throws ParseException {
|
|
455 |
this.next();
|
|
456 |
int p = this.parenOpened++;
|
|
457 |
Token tok = Token.createParen(this.parseRegex(), p);
|
|
458 |
if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
|
|
459 |
this.parennumber++;
|
|
460 |
this.next(); // Skips ')'
|
|
461 |
return tok;
|
|
462 |
}
|
|
463 |
Token processParen2() throws ParseException {
|
|
464 |
this.next();
|
|
465 |
Token tok = Token.createParen(this.parseRegex(), 0);
|
|
466 |
if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
|
|
467 |
this.next(); // Skips ')'
|
|
468 |
return tok;
|
|
469 |
}
|
|
470 |
Token processCondition() throws ParseException {
|
|
471 |
// this.offset points the next of '('
|
|
472 |
if (this.offset+1 >= this.regexlen) throw ex("parser.factor.4", this.offset);
|
|
473 |
// Parses a condition.
|
|
474 |
int refno = -1;
|
|
475 |
Token condition = null;
|
|
476 |
int ch = this.regex.charAt(this.offset);
|
|
477 |
if ('1' <= ch && ch <= '9') {
|
|
478 |
refno = ch-'0';
|
|
479 |
int finalRefno = refno;
|
|
480 |
|
|
481 |
if (this.parennumber <= refno)
|
|
482 |
throw ex("parser.parse.2", this.offset);
|
|
483 |
|
|
484 |
while (this.offset + 1 < this.regexlen) {
|
|
485 |
ch = this.regex.charAt(this.offset + 1);
|
|
486 |
if ('1' <= ch && ch <= '9') {
|
|
487 |
refno = (refno * 10) + (ch - '0');
|
|
488 |
if (refno < this.parennumber) {
|
|
489 |
finalRefno= refno;
|
|
490 |
++this.offset;
|
|
491 |
}
|
|
492 |
else {
|
|
493 |
break;
|
|
494 |
}
|
|
495 |
}
|
|
496 |
else {
|
|
497 |
break;
|
|
498 |
}
|
|
499 |
}
|
|
500 |
|
|
501 |
this.hasBackReferences = true;
|
|
502 |
if (this.references == null) this.references = new Vector();
|
|
503 |
this.references.addElement(new ReferencePosition(finalRefno, this.offset));
|
|
504 |
this.offset ++;
|
|
505 |
if (this.regex.charAt(this.offset) != ')') throw ex("parser.factor.1", this.offset);
|
|
506 |
this.offset ++;
|
|
507 |
} else {
|
|
508 |
if (ch == '?') this.offset --; // Points '('.
|
|
509 |
this.next();
|
|
510 |
condition = this.parseFactor();
|
|
511 |
switch (condition.type) {
|
|
512 |
case Token.LOOKAHEAD:
|
|
513 |
case Token.NEGATIVELOOKAHEAD:
|
|
514 |
case Token.LOOKBEHIND:
|
|
515 |
case Token.NEGATIVELOOKBEHIND:
|
|
516 |
break;
|
|
517 |
case Token.ANCHOR:
|
|
518 |
if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
|
|
519 |
break;
|
|
520 |
default:
|
|
521 |
throw ex("parser.factor.5", this.offset);
|
|
522 |
}
|
|
523 |
}
|
|
524 |
// Parses yes/no-patterns.
|
|
525 |
this.next();
|
|
526 |
Token yesPattern = this.parseRegex();
|
|
527 |
Token noPattern = null;
|
|
528 |
if (yesPattern.type == Token.UNION) {
|
|
529 |
if (yesPattern.size() != 2) throw ex("parser.factor.6", this.offset);
|
|
530 |
noPattern = yesPattern.getChild(1);
|
|
531 |
yesPattern = yesPattern.getChild(0);
|
|
532 |
}
|
|
533 |
if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
|
|
534 |
this.next();
|
|
535 |
return Token.createCondition(refno, condition, yesPattern, noPattern);
|
|
536 |
}
|
|
537 |
Token processModifiers() throws ParseException {
|
|
538 |
// this.offset points the next of '?'.
|
|
539 |
// modifiers ::= [imsw]* ('-' [imsw]*)? ':'
|
|
540 |
int add = 0, mask = 0, ch = -1;
|
|
541 |
while (this.offset < this.regexlen) {
|
|
542 |
ch = this.regex.charAt(this.offset);
|
|
543 |
int v = REUtil.getOptionValue(ch);
|
|
544 |
if (v == 0) break; // '-' or ':'?
|
|
545 |
add |= v;
|
|
546 |
this.offset ++;
|
|
547 |
}
|
|
548 |
if (this.offset >= this.regexlen) throw ex("parser.factor.2", this.offset-1);
|
|
549 |
if (ch == '-') {
|
|
550 |
this.offset ++;
|
|
551 |
while (this.offset < this.regexlen) {
|
|
552 |
ch = this.regex.charAt(this.offset);
|
|
553 |
int v = REUtil.getOptionValue(ch);
|
|
554 |
if (v == 0) break; // ':'?
|
|
555 |
mask |= v;
|
|
556 |
this.offset ++;
|
|
557 |
}
|
|
558 |
if (this.offset >= this.regexlen) throw ex("parser.factor.2", this.offset-1);
|
|
559 |
}
|
|
560 |
Token tok;
|
|
561 |
if (ch == ':') {
|
|
562 |
this.offset ++;
|
|
563 |
this.next();
|
|
564 |
tok = Token.createModifierGroup(this.parseRegex(), add, mask);
|
|
565 |
if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
|
|
566 |
this.next();
|
|
567 |
} else if (ch == ')') { // such as (?-i)
|
|
568 |
this.offset ++;
|
|
569 |
this.next();
|
|
570 |
tok = Token.createModifierGroup(this.parseRegex(), add, mask);
|
|
571 |
} else
|
|
572 |
throw ex("parser.factor.3", this.offset);
|
|
573 |
|
|
574 |
return tok;
|
|
575 |
}
|
|
576 |
Token processIndependent() throws ParseException {
|
|
577 |
this.next();
|
|
578 |
Token tok = Token.createLook(Token.INDEPENDENT, this.parseRegex());
|
|
579 |
if (this.read() != T_RPAREN) throw ex("parser.factor.1", this.offset-1);
|
|
580 |
this.next(); // Skips ')'
|
|
581 |
return tok;
|
|
582 |
}
|
|
583 |
Token processBacksolidus_c() throws ParseException {
|
|
584 |
int ch2; // Must be in 0x0040-0x005f
|
|
585 |
if (this.offset >= this.regexlen
|
|
586 |
|| ((ch2 = this.regex.charAt(this.offset++)) & 0xffe0) != 0x0040)
|
|
587 |
throw ex("parser.atom.1", this.offset-1);
|
|
588 |
this.next();
|
|
589 |
return Token.createChar(ch2-0x40);
|
|
590 |
}
|
|
591 |
Token processBacksolidus_C() throws ParseException {
|
|
592 |
throw ex("parser.process.1", this.offset);
|
|
593 |
}
|
|
594 |
Token processBacksolidus_i() throws ParseException {
|
|
595 |
Token tok = Token.createChar('i');
|
|
596 |
this.next();
|
|
597 |
return tok;
|
|
598 |
}
|
|
599 |
Token processBacksolidus_I() throws ParseException {
|
|
600 |
throw ex("parser.process.1", this.offset);
|
|
601 |
}
|
|
602 |
Token processBacksolidus_g() throws ParseException {
|
|
603 |
this.next();
|
|
604 |
return Token.getGraphemePattern();
|
|
605 |
}
|
|
606 |
Token processBacksolidus_X() throws ParseException {
|
|
607 |
this.next();
|
|
608 |
return Token.getCombiningCharacterSequence();
|
|
609 |
}
|
|
610 |
Token processBackreference() throws ParseException {
|
|
611 |
int refnum = this.chardata-'0';
|
|
612 |
int finalRefnum = refnum;
|
|
613 |
|
|
614 |
if (this.parennumber <= refnum)
|
|
615 |
throw ex("parser.parse.2", this.offset-2);
|
|
616 |
|
|
617 |
while (this.offset < this.regexlen) {
|
|
618 |
final int ch = this.regex.charAt(this.offset);
|
|
619 |
if ('1' <= ch && ch <= '9') {
|
|
620 |
refnum = (refnum * 10) + (ch - '0');
|
|
621 |
if (refnum < this.parennumber) {
|
|
622 |
++this.offset;
|
|
623 |
finalRefnum = refnum;
|
|
624 |
this.chardata = ch;
|
|
625 |
}
|
|
626 |
else {
|
|
627 |
break;
|
|
628 |
}
|
|
629 |
}
|
|
630 |
else {
|
|
631 |
break;
|
|
632 |
}
|
|
633 |
}
|
|
634 |
|
|
635 |
Token tok = Token.createBackReference(finalRefnum);
|
|
636 |
this.hasBackReferences = true;
|
|
637 |
if (this.references == null) this.references = new Vector();
|
|
638 |
this.references.addElement(new ReferencePosition(finalRefnum, this.offset-2));
|
|
639 |
this.next();
|
|
640 |
return tok;
|
|
641 |
}
|
|
642 |
|
|
643 |
// ----------------------------------------------------------------
|
|
644 |
|
|
645 |
/**
|
|
646 |
* factor ::= ('^' | '$' | '\A' | '\Z' | '\z' | '\b' | '\B' | '\<' | '\>'
|
|
647 |
* | atom (('*' | '+' | '?' | minmax ) '?'? )?)
|
|
648 |
* | '(?=' regex ')' | '(?!' regex ')' | '(?<=' regex ')' | '(?<!' regex ')'
|
|
649 |
* | '(?#' [^)]* ')'
|
|
650 |
* minmax ::= '{' min (',' max?)? '}'
|
|
651 |
* min ::= [0-9]+
|
|
652 |
* max ::= [0-9]+
|
|
653 |
*/
|
|
654 |
Token parseFactor() throws ParseException {
|
|
655 |
int ch = this.read();
|
|
656 |
Token tok;
|
|
657 |
switch (ch) {
|
|
658 |
case T_CARET: return this.processCaret();
|
|
659 |
case T_DOLLAR: return this.processDollar();
|
|
660 |
case T_LOOKAHEAD: return this.processLookahead();
|
|
661 |
case T_NEGATIVELOOKAHEAD: return this.processNegativelookahead();
|
|
662 |
case T_LOOKBEHIND: return this.processLookbehind();
|
|
663 |
case T_NEGATIVELOOKBEHIND: return this.processNegativelookbehind();
|
|
664 |
|
|
665 |
case T_COMMENT:
|
|
666 |
this.next();
|
|
667 |
return Token.createEmpty();
|
|
668 |
|
|
669 |
case T_BACKSOLIDUS:
|
|
670 |
switch (this.chardata) {
|
|
671 |
case 'A': return this.processBacksolidus_A();
|
|
672 |
case 'Z': return this.processBacksolidus_Z();
|
|
673 |
case 'z': return this.processBacksolidus_z();
|
|
674 |
case 'b': return this.processBacksolidus_b();
|
|
675 |
case 'B': return this.processBacksolidus_B();
|
|
676 |
case '<': return this.processBacksolidus_lt();
|
|
677 |
case '>': return this.processBacksolidus_gt();
|
|
678 |
}
|
|
679 |
// through down
|
|
680 |
}
|
|
681 |
tok = this.parseAtom();
|
|
682 |
ch = this.read();
|
|
683 |
switch (ch) {
|
|
684 |
case T_STAR: return this.processStar(tok);
|
|
685 |
case T_PLUS: return this.processPlus(tok);
|
|
686 |
case T_QUESTION: return this.processQuestion(tok);
|
|
687 |
case T_CHAR:
|
|
688 |
if (this.chardata == '{' && this.offset < this.regexlen) {
|
|
689 |
|
|
690 |
int off = this.offset; // this.offset -> next of '{'
|
|
691 |
int min = 0, max = -1;
|
|
692 |
|
|
693 |
if ((ch = this.regex.charAt(off++)) >= '0' && ch <= '9') {
|
|
694 |
|
|
695 |
min = ch -'0';
|
|
696 |
while (off < this.regexlen
|
|
697 |
&& (ch = this.regex.charAt(off++)) >= '0' && ch <= '9') {
|
|
698 |
min = min*10 +ch-'0';
|
|
699 |
if (min < 0)
|
|
700 |
throw ex("parser.quantifier.5", this.offset);
|
|
701 |
}
|
|
702 |
}
|
|
703 |
else {
|
|
704 |
throw ex("parser.quantifier.1", this.offset);
|
|
705 |
}
|
|
706 |
|
|
707 |
max = min;
|
|
708 |
if (ch == ',') {
|
|
709 |
|
|
710 |
if (off >= this.regexlen) {
|
|
711 |
throw ex("parser.quantifier.3", this.offset);
|
|
712 |
}
|
|
713 |
else if ((ch = this.regex.charAt(off++)) >= '0' && ch <= '9') {
|
|
714 |
|
|
715 |
max = ch -'0'; // {min,max}
|
|
716 |
while (off < this.regexlen
|
|
717 |
&& (ch = this.regex.charAt(off++)) >= '0'
|
|
718 |
&& ch <= '9') {
|
|
719 |
max = max*10 +ch-'0';
|
|
720 |
if (max < 0)
|
|
721 |
throw ex("parser.quantifier.5", this.offset);
|
|
722 |
}
|
|
723 |
|
|
724 |
if (min > max)
|
|
725 |
throw ex("parser.quantifier.4", this.offset);
|
|
726 |
}
|
|
727 |
else { // assume {min,}
|
|
728 |
max = -1;
|
|
729 |
}
|
|
730 |
}
|
|
731 |
|
|
732 |
if (ch != '}')
|
|
733 |
throw ex("parser.quantifier.2", this.offset);
|
|
734 |
|
|
735 |
if (this.checkQuestion(off)) { // off -> next of '}'
|
|
736 |
tok = Token.createNGClosure(tok);
|
|
737 |
this.offset = off+1;
|
|
738 |
} else {
|
|
739 |
tok = Token.createClosure(tok);
|
|
740 |
this.offset = off;
|
|
741 |
}
|
|
742 |
|
|
743 |
tok.setMin(min);
|
|
744 |
tok.setMax(max);
|
|
745 |
//System.err.println("CLOSURE: "+min+", "+max);
|
|
746 |
this.next();
|
|
747 |
}
|
|
748 |
}
|
|
749 |
return tok;
|
|
750 |
}
|
|
751 |
|
|
752 |
/**
|
|
753 |
* atom ::= char | '.' | char-class | '(' regex ')' | '(?:' regex ')' | '\' [0-9]
|
|
754 |
* | '\w' | '\W' | '\d' | '\D' | '\s' | '\S' | category-block
|
|
755 |
* | '(?>' regex ')'
|
|
756 |
* char ::= '\\' | '\' [efnrt] | bmp-code | character-1
|
|
757 |
*/
|
|
758 |
Token parseAtom() throws ParseException {
|
|
759 |
int ch = this.read();
|
|
760 |
Token tok = null;
|
|
761 |
switch (ch) {
|
|
762 |
case T_LPAREN: return this.processParen();
|
|
763 |
case T_LPAREN2: return this.processParen2(); // '(?:'
|
|
764 |
case T_CONDITION: return this.processCondition(); // '(?('
|
|
765 |
case T_MODIFIERS: return this.processModifiers(); // (?modifiers ... )
|
|
766 |
case T_INDEPENDENT: return this.processIndependent();
|
|
767 |
case T_DOT:
|
|
768 |
this.next(); // Skips '.'
|
|
769 |
tok = Token.token_dot;
|
|
770 |
break;
|
|
771 |
|
|
772 |
/**
|
|
773 |
* char-class ::= '[' ( '^'? range ','?)+ ']'
|
|
774 |
* range ::= '\d' | '\w' | '\s' | category-block | range-char
|
|
775 |
* | range-char '-' range-char
|
|
776 |
* range-char ::= '\[' | '\]' | '\\' | '\' [,-efnrtv] | bmp-code | character-2
|
|
777 |
* bmp-char ::= '\' 'u' [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F]
|
|
778 |
*/
|
|
779 |
case T_LBRACKET: return this.parseCharacterClass(true);
|
|
780 |
case T_SET_OPERATIONS: return this.parseSetOperations();
|
|
781 |
|
|
782 |
case T_BACKSOLIDUS:
|
|
783 |
switch (this.chardata) {
|
|
784 |
case 'd': case 'D':
|
|
785 |
case 'w': case 'W':
|
|
786 |
case 's': case 'S':
|
|
787 |
tok = this.getTokenForShorthand(this.chardata);
|
|
788 |
this.next();
|
|
789 |
return tok;
|
|
790 |
|
|
791 |
case 'e': case 'f': case 'n': case 'r':
|
|
792 |
case 't': case 'u': case 'v': case 'x':
|
|
793 |
{
|
|
794 |
int ch2 = this.decodeEscaped();
|
|
795 |
if (ch2 < 0x10000) {
|
|
796 |
tok = Token.createChar(ch2);
|
|
797 |
} else {
|
|
798 |
tok = Token.createString(REUtil.decomposeToSurrogates(ch2));
|
|
799 |
}
|
|
800 |
}
|
|
801 |
break;
|
|
802 |
|
|
803 |
case 'c': return this.processBacksolidus_c();
|
|
804 |
case 'C': return this.processBacksolidus_C();
|
|
805 |
case 'i': return this.processBacksolidus_i();
|
|
806 |
case 'I': return this.processBacksolidus_I();
|
|
807 |
case 'g': return this.processBacksolidus_g();
|
|
808 |
case 'X': return this.processBacksolidus_X();
|
|
809 |
case '1': case '2': case '3': case '4':
|
|
810 |
case '5': case '6': case '7': case '8': case '9':
|
|
811 |
return this.processBackreference();
|
|
812 |
|
|
813 |
case 'P':
|
|
814 |
case 'p':
|
|
815 |
int pstart = this.offset;
|
|
816 |
tok = processBacksolidus_pP(this.chardata);
|
|
817 |
if (tok == null) throw this.ex("parser.atom.5", pstart);
|
|
818 |
break;
|
|
819 |
|
|
820 |
default:
|
|
821 |
tok = Token.createChar(this.chardata);
|
|
822 |
}
|
|
823 |
this.next();
|
|
824 |
break;
|
|
825 |
|
|
826 |
case T_CHAR:
|
|
827 |
if (this.chardata == ']' || this.chardata == '{' || this.chardata == '}')
|
|
828 |
throw this.ex("parser.atom.4", this.offset-1);
|
|
829 |
tok = Token.createChar(this.chardata);
|
|
830 |
int high = this.chardata;
|
|
831 |
this.next();
|
|
832 |
if (REUtil.isHighSurrogate(high)
|
|
833 |
&& this.read() == T_CHAR && REUtil.isLowSurrogate(this.chardata)) {
|
|
834 |
char[] sur = new char[2];
|
|
835 |
sur[0] = (char)high;
|
|
836 |
sur[1] = (char)this.chardata;
|
|
837 |
tok = Token.createParen(Token.createString(new String(sur)), 0);
|
|
838 |
this.next();
|
|
839 |
}
|
|
840 |
break;
|
|
841 |
|
|
842 |
default:
|
|
843 |
throw this.ex("parser.atom.4", this.offset-1);
|
|
844 |
}
|
|
845 |
return tok;
|
|
846 |
}
|
|
847 |
|
|
848 |
protected RangeToken processBacksolidus_pP(int c) throws ParseException {
|
|
849 |
|
|
850 |
this.next();
|
|
851 |
if (this.read() != T_CHAR || this.chardata != '{')
|
|
852 |
throw this.ex("parser.atom.2", this.offset-1);
|
|
853 |
|
|
854 |
// handle category escape
|
|
855 |
boolean positive = c == 'p';
|
|
856 |
int namestart = this.offset;
|
|
857 |
int nameend = this.regex.indexOf('}', namestart);
|
|
858 |
|
|
859 |
if (nameend < 0)
|
|
860 |
throw this.ex("parser.atom.3", this.offset);
|
|
861 |
|
|
862 |
String pname = this.regex.substring(namestart, nameend);
|
|
863 |
this.offset = nameend+1;
|
|
864 |
|
|
865 |
return Token.getRange(pname, positive, this.isSet(RegularExpression.XMLSCHEMA_MODE));
|
|
866 |
}
|
|
867 |
|
|
868 |
int processCIinCharacterClass(RangeToken tok, int c) {
|
|
869 |
return this.decodeEscaped();
|
|
870 |
}
|
|
871 |
|
|
872 |
/**
|
|
873 |
* char-class ::= '[' ( '^'? range ','?)+ ']'
|
|
874 |
* range ::= '\d' | '\w' | '\s' | category-block | range-char
|
|
875 |
* | range-char '-' range-char
|
|
876 |
* range-char ::= '\[' | '\]' | '\\' | '\' [,-efnrtv] | bmp-code | character-2
|
|
877 |
* bmp-code ::= '\' 'u' [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F]
|
|
878 |
*/
|
|
879 |
protected RangeToken parseCharacterClass(boolean useNrange) throws ParseException {
|
|
880 |
this.setContext(S_INBRACKETS);
|
|
881 |
this.next(); // '['
|
|
882 |
boolean nrange = false;
|
|
883 |
RangeToken base = null;
|
|
884 |
RangeToken tok;
|
|
885 |
if (this.read() == T_CHAR && this.chardata == '^') {
|
|
886 |
nrange = true;
|
|
887 |
this.next(); // '^'
|
|
888 |
if (useNrange) {
|
|
889 |
tok = Token.createNRange();
|
|
890 |
} else {
|
|
891 |
base = Token.createRange();
|
|
892 |
base.addRange(0, Token.UTF16_MAX);
|
|
893 |
tok = Token.createRange();
|
|
894 |
}
|
|
895 |
} else {
|
|
896 |
tok = Token.createRange();
|
|
897 |
}
|
|
898 |
int type;
|
|
899 |
boolean firstloop = true;
|
|
900 |
while ((type = this.read()) != T_EOF) {
|
|
901 |
if (type == T_CHAR && this.chardata == ']' && !firstloop)
|
|
902 |
break;
|
|
903 |
int c = this.chardata;
|
|
904 |
boolean end = false;
|
|
905 |
if (type == T_BACKSOLIDUS) {
|
|
906 |
switch (c) {
|
|
907 |
case 'd': case 'D':
|
|
908 |
case 'w': case 'W':
|
|
909 |
case 's': case 'S':
|
|
910 |
tok.mergeRanges(this.getTokenForShorthand(c));
|
|
911 |
end = true;
|
|
912 |
break;
|
|
913 |
|
|
914 |
case 'i': case 'I':
|
|
915 |
case 'c': case 'C':
|
|
916 |
c = this.processCIinCharacterClass(tok, c);
|
|
917 |
if (c < 0) end = true;
|
|
918 |
break;
|
|
919 |
|
|
920 |
case 'p':
|
|
921 |
case 'P':
|
|
922 |
int pstart = this.offset;
|
|
923 |
RangeToken tok2 = this.processBacksolidus_pP(c);
|
|
924 |
if (tok2 == null) throw this.ex("parser.atom.5", pstart);
|
|
925 |
tok.mergeRanges(tok2);
|
|
926 |
end = true;
|
|
927 |
break;
|
|
928 |
|
|
929 |
default:
|
|
930 |
c = this.decodeEscaped();
|
|
931 |
} // \ + c
|
|
932 |
} // backsolidus
|
|
933 |
// POSIX Character class such as [:alnum:]
|
|
934 |
else if (type == T_POSIX_CHARCLASS_START) {
|
|
935 |
int nameend = this.regex.indexOf(':', this.offset);
|
|
936 |
if (nameend < 0) throw this.ex("parser.cc.1", this.offset);
|
|
937 |
boolean positive = true;
|
|
938 |
if (this.regex.charAt(this.offset) == '^') {
|
|
939 |
this.offset ++;
|
|
940 |
positive = false;
|
|
941 |
}
|
|
942 |
String name = this.regex.substring(this.offset, nameend);
|
|
943 |
RangeToken range = Token.getRange(name, positive,
|
|
944 |
this.isSet(RegularExpression.XMLSCHEMA_MODE));
|
|
945 |
if (range == null) throw this.ex("parser.cc.3", this.offset);
|
|
946 |
tok.mergeRanges(range);
|
|
947 |
end = true;
|
|
948 |
if (nameend+1 >= this.regexlen || this.regex.charAt(nameend+1) != ']')
|
|
949 |
throw this.ex("parser.cc.1", nameend);
|
|
950 |
this.offset = nameend+2;
|
|
951 |
}
|
|
952 |
else if (type == T_XMLSCHEMA_CC_SUBTRACTION && !firstloop) {
|
|
953 |
if (nrange) {
|
|
954 |
nrange = false;
|
|
955 |
if (useNrange) {
|
|
956 |
tok = (RangeToken) Token.complementRanges(tok);
|
|
957 |
}
|
|
958 |
else {
|
|
959 |
base.subtractRanges(tok);
|
|
960 |
tok = base;
|
|
961 |
}
|
|
962 |
}
|
|
963 |
RangeToken range2 = this.parseCharacterClass(false);
|
|
964 |
tok.subtractRanges(range2);
|
|
965 |
if (this.read() != T_CHAR || this.chardata != ']') {
|
|
966 |
throw this.ex("parser.cc.5", this.offset);
|
|
967 |
}
|
|
968 |
break; // Exit this loop
|
|
969 |
}
|
|
970 |
this.next();
|
|
971 |
if (!end) { // if not shorthands...
|
|
972 |
if (this.read() != T_CHAR || this.chardata != '-') { // Here is no '-'.
|
|
973 |
if (!this.isSet(RegularExpression.IGNORE_CASE) || c > 0xffff) {
|
|
974 |
tok.addRange(c, c);
|
|
975 |
}
|
|
976 |
else {
|
|
977 |
addCaseInsensitiveChar(tok, c);
|
|
978 |
}
|
|
979 |
}
|
|
980 |
else if (type == T_XMLSCHEMA_CC_SUBTRACTION) {
|
|
981 |
throw this.ex("parser.cc.8", this.offset-1);
|
|
982 |
}
|
|
983 |
else {
|
|
984 |
this.next(); // Skips '-'
|
|
985 |
if ((type = this.read()) == T_EOF) throw this.ex("parser.cc.2", this.offset);
|
|
986 |
if (type == T_CHAR && this.chardata == ']') {
|
|
987 |
if (!this.isSet(RegularExpression.IGNORE_CASE) || c > 0xffff) {
|
|
988 |
tok.addRange(c, c);
|
|
989 |
}
|
|
990 |
else {
|
|
991 |
addCaseInsensitiveChar(tok, c);
|
|
992 |
}
|
|
993 |
tok.addRange('-', '-');
|
|
994 |
} else {
|
|
995 |
int rangeend = this.chardata;
|
|
996 |
if (type == T_BACKSOLIDUS) {
|
|
997 |
rangeend = this.decodeEscaped();
|
|
998 |
}
|
|
999 |
this.next();
|
|
1000 |
if (c > rangeend) {
|
|
1001 |
throw this.ex("parser.ope.3", this.offset-1);
|
|
1002 |
}
|
|
1003 |
if (!this.isSet(RegularExpression.IGNORE_CASE) ||
|
|
1004 |
(c > 0xffff && rangeend > 0xffff)) {
|
|
1005 |
tok.addRange(c, rangeend);
|
|
1006 |
}
|
|
1007 |
else {
|
|
1008 |
addCaseInsensitiveCharRange(tok, c, rangeend);
|
|
1009 |
}
|
|
1010 |
}
|
|
1011 |
}
|
|
1012 |
}
|
|
1013 |
if (this.isSet(RegularExpression.SPECIAL_COMMA)
|
|
1014 |
&& this.read() == T_CHAR && this.chardata == ',') {
|
|
1015 |
this.next();
|
|
1016 |
}
|
|
1017 |
firstloop = false;
|
|
1018 |
}
|
|
1019 |
if (this.read() == T_EOF) {
|
|
1020 |
throw this.ex("parser.cc.2", this.offset);
|
|
1021 |
}
|
|
1022 |
|
|
1023 |
if (!useNrange && nrange) {
|
|
1024 |
base.subtractRanges(tok);
|
|
1025 |
tok = base;
|
|
1026 |
}
|
|
1027 |
tok.sortRanges();
|
|
1028 |
tok.compactRanges();
|
|
1029 |
this.setContext(S_NORMAL);
|
|
1030 |
this.next(); // Skips ']'
|
|
1031 |
|
|
1032 |
return tok;
|
|
1033 |
}
|
|
1034 |
|
|
1035 |
/**
|
|
1036 |
* '(?[' ... ']' (('-' | '+' | '&') '[' ... ']')? ')'
|
|
1037 |
*/
|
|
1038 |
protected RangeToken parseSetOperations() throws ParseException {
|
|
1039 |
RangeToken tok = this.parseCharacterClass(false);
|
|
1040 |
int type;
|
|
1041 |
while ((type = this.read()) != T_RPAREN) {
|
|
1042 |
int ch = this.chardata;
|
|
1043 |
if (type == T_CHAR && (ch == '-' || ch == '&')
|
|
1044 |
|| type == T_PLUS) {
|
|
1045 |
this.next();
|
|
1046 |
if (this.read() != T_LBRACKET) throw ex("parser.ope.1", this.offset-1);
|
|
1047 |
RangeToken t2 = this.parseCharacterClass(false);
|
|
1048 |
if (type == T_PLUS)
|
|
1049 |
tok.mergeRanges(t2);
|
|
1050 |
else if (ch == '-')
|
|
1051 |
tok.subtractRanges(t2);
|
|
1052 |
else if (ch == '&')
|
|
1053 |
tok.intersectRanges(t2);
|
|
1054 |
else
|
|
1055 |
throw new RuntimeException("ASSERT");
|
|
1056 |
} else {
|
|
1057 |
throw ex("parser.ope.2", this.offset-1);
|
|
1058 |
}
|
|
1059 |
}
|
|
1060 |
this.next();
|
|
1061 |
return tok;
|
|
1062 |
}
|
|
1063 |
|
|
1064 |
Token getTokenForShorthand(int ch) {
|
|
1065 |
Token tok;
|
|
1066 |
switch (ch) {
|
|
1067 |
case 'd':
|
|
1068 |
tok = this.isSet(RegularExpression.USE_UNICODE_CATEGORY)
|
|
1069 |
? Token.getRange("Nd", true) : Token.token_0to9;
|
|
1070 |
break;
|
|
1071 |
case 'D':
|
|
1072 |
tok = this.isSet(RegularExpression.USE_UNICODE_CATEGORY)
|
|
1073 |
? Token.getRange("Nd", false) : Token.token_not_0to9;
|
|
1074 |
break;
|
|
1075 |
case 'w':
|
|
1076 |
tok = this.isSet(RegularExpression.USE_UNICODE_CATEGORY)
|
|
1077 |
? Token.getRange("IsWord", true) : Token.token_wordchars;
|
|
1078 |
break;
|
|
1079 |
case 'W':
|
|
1080 |
tok = this.isSet(RegularExpression.USE_UNICODE_CATEGORY)
|
|
1081 |
? Token.getRange("IsWord", false) : Token.token_not_wordchars;
|
|
1082 |
break;
|
|
1083 |
case 's':
|
|
1084 |
tok = this.isSet(RegularExpression.USE_UNICODE_CATEGORY)
|
|
1085 |
? Token.getRange("IsSpace", true) : Token.token_spaces;
|
|
1086 |
break;
|
|
1087 |
case 'S':
|
|
1088 |
tok = this.isSet(RegularExpression.USE_UNICODE_CATEGORY)
|
|
1089 |
? Token.getRange("IsSpace", false) : Token.token_not_spaces;
|
|
1090 |
break;
|
|
1091 |
|
|
1092 |
default:
|
|
1093 |
throw new RuntimeException("Internal Error: shorthands: \\u"+Integer.toString(ch, 16));
|
|
1094 |
}
|
|
1095 |
return tok;
|
|
1096 |
}
|
|
1097 |
|
|
1098 |
/**
|
|
1099 |
*/
|
|
1100 |
int decodeEscaped() throws ParseException {
|
|
1101 |
if (this.read() != T_BACKSOLIDUS) throw ex("parser.next.1", this.offset-1);
|
|
1102 |
int c = this.chardata;
|
|
1103 |
switch (c) {
|
|
1104 |
case 'e': c = 0x1b; break; // ESCAPE U+001B
|
|
1105 |
case 'f': c = '\f'; break; // FORM FEED U+000C
|
|
1106 |
case 'n': c = '\n'; break; // LINE FEED U+000A
|
|
1107 |
case 'r': c = '\r'; break; // CRRIAGE RETURN U+000D
|
|
1108 |
case 't': c = '\t'; break; // HORIZONTAL TABULATION U+0009
|
|
1109 |
//case 'v': c = 0x0b; break; // VERTICAL TABULATION U+000B
|
|
1110 |
case 'x':
|
|
1111 |
this.next();
|
|
1112 |
if (this.read() != T_CHAR) throw ex("parser.descape.1", this.offset-1);
|
|
1113 |
if (this.chardata == '{') {
|
|
1114 |
int v1 = 0;
|
|
1115 |
int uv = 0;
|
|
1116 |
do {
|
|
1117 |
this.next();
|
|
1118 |
if (this.read() != T_CHAR) throw ex("parser.descape.1", this.offset-1);
|
|
1119 |
if ((v1 = hexChar(this.chardata)) < 0)
|
|
1120 |
break;
|
|
1121 |
if (uv > uv*16) throw ex("parser.descape.2", this.offset-1);
|
|
1122 |
uv = uv*16+v1;
|
|
1123 |
} while (true);
|
|
1124 |
if (this.chardata != '}') throw ex("parser.descape.3", this.offset-1);
|
|
1125 |
if (uv > Token.UTF16_MAX) throw ex("parser.descape.4", this.offset-1);
|
|
1126 |
c = uv;
|
|
1127 |
} else {
|
|
1128 |
int v1 = 0;
|
|
1129 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1130 |
throw ex("parser.descape.1", this.offset-1);
|
|
1131 |
int uv = v1;
|
|
1132 |
this.next();
|
|
1133 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1134 |
throw ex("parser.descape.1", this.offset-1);
|
|
1135 |
uv = uv*16+v1;
|
|
1136 |
c = uv;
|
|
1137 |
}
|
|
1138 |
break;
|
|
1139 |
|
|
1140 |
case 'u':
|
|
1141 |
int v1 = 0;
|
|
1142 |
this.next();
|
|
1143 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1144 |
throw ex("parser.descape.1", this.offset-1);
|
|
1145 |
int uv = v1;
|
|
1146 |
this.next();
|
|
1147 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1148 |
throw ex("parser.descape.1", this.offset-1);
|
|
1149 |
uv = uv*16+v1;
|
|
1150 |
this.next();
|
|
1151 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1152 |
throw ex("parser.descape.1", this.offset-1);
|
|
1153 |
uv = uv*16+v1;
|
|
1154 |
this.next();
|
|
1155 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1156 |
throw ex("parser.descape.1", this.offset-1);
|
|
1157 |
uv = uv*16+v1;
|
|
1158 |
c = uv;
|
|
1159 |
break;
|
|
1160 |
|
|
1161 |
case 'v':
|
|
1162 |
this.next();
|
|
1163 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1164 |
throw ex("parser.descape.1", this.offset-1);
|
|
1165 |
uv = v1;
|
|
1166 |
this.next();
|
|
1167 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1168 |
throw ex("parser.descape.1", this.offset-1);
|
|
1169 |
uv = uv*16+v1;
|
|
1170 |
this.next();
|
|
1171 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1172 |
throw ex("parser.descape.1", this.offset-1);
|
|
1173 |
uv = uv*16+v1;
|
|
1174 |
this.next();
|
|
1175 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1176 |
throw ex("parser.descape.1", this.offset-1);
|
|
1177 |
uv = uv*16+v1;
|
|
1178 |
this.next();
|
|
1179 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1180 |
throw ex("parser.descape.1", this.offset-1);
|
|
1181 |
uv = uv*16+v1;
|
|
1182 |
this.next();
|
|
1183 |
if (this.read() != T_CHAR || (v1 = hexChar(this.chardata)) < 0)
|
|
1184 |
throw ex("parser.descape.1", this.offset-1);
|
|
1185 |
uv = uv*16+v1;
|
|
1186 |
if (uv > Token.UTF16_MAX) throw ex("parser.descappe.4", this.offset-1);
|
|
1187 |
c = uv;
|
|
1188 |
break;
|
|
1189 |
case 'A':
|
|
1190 |
case 'Z':
|
|
1191 |
case 'z':
|
|
1192 |
throw ex("parser.descape.5", this.offset-2);
|
|
1193 |
default:
|
|
1194 |
}
|
|
1195 |
return c;
|
|
1196 |
}
|
|
1197 |
|
|
1198 |
static private final int hexChar(int ch) {
|
|
1199 |
if (ch < '0') return -1;
|
|
1200 |
if (ch > 'f') return -1;
|
|
1201 |
if (ch <= '9') return ch-'0';
|
|
1202 |
if (ch < 'A') return -1;
|
|
1203 |
if (ch <= 'F') return ch-'A'+10;
|
|
1204 |
if (ch < 'a') return -1;
|
|
1205 |
return ch-'a'+10;
|
|
1206 |
}
|
|
1207 |
|
|
1208 |
static protected final void addCaseInsensitiveChar(RangeToken tok, int c) {
|
|
1209 |
final int[] caseMap = CaseInsensitiveMap.get(c);
|
|
1210 |
tok.addRange(c, c);
|
|
1211 |
|
|
1212 |
if (caseMap != null) {
|
|
1213 |
for (int i=0; i<caseMap.length; i+=2) {
|
|
1214 |
tok.addRange(caseMap[i], caseMap[i]);
|
|
1215 |
}
|
|
1216 |
}
|
|
1217 |
|
|
1218 |
}
|
|
1219 |
|
|
1220 |
static protected final void addCaseInsensitiveCharRange(RangeToken tok, int start, int end) {
|
|
1221 |
int[] caseMap;
|
|
1222 |
int r1, r2;
|
|
1223 |
if (start <= end) {
|
|
1224 |
r1 = start;
|
|
1225 |
r2 = end;
|
|
1226 |
} else {
|
|
1227 |
r1 = end;
|
|
1228 |
r2 = start;
|
|
1229 |
}
|
|
1230 |
|
|
1231 |
tok.addRange(r1, r2);
|
|
1232 |
for (int ch = r1; ch <= r2; ch++) {
|
|
1233 |
caseMap = CaseInsensitiveMap.get(ch);
|
|
1234 |
if (caseMap != null) {
|
|
1235 |
for (int i=0; i<caseMap.length; i+=2) {
|
|
1236 |
tok.addRange(caseMap[i], caseMap[i]);
|
|
1237 |
}
|
|
1238 |
}
|
|
1239 |
}
|
|
1240 |
}
|
|
1241 |
}
|