1/* 2 [The "BSD licence"] 3 Copyright (c) 2013 Terence Parr 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions 8 are met: 9 1. Redistributions of source code must retain the above copyright 10 notice, this list of conditions and the following disclaimer. 11 2. Redistributions in binary form must reproduce the above copyright 12 notice, this list of conditions and the following disclaimer in the 13 documentation and/or other materials provided with the distribution. 14 3. The name of the author may not be used to endorse or promote products 15 derived from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27*/ 28 29/** XML lexer derived from ANTLR v4 ref guide book example */ 30lexer grammar XMLLexer; 31 32// Default "mode": Everything OUTSIDE of a tag 33COMMENT : '<!--' .*? '-->' ; 34CDATA : '<![CDATA[' .*? ']]>' ; 35/** Scarf all DTD stuff, Entity Declarations like <!ENTITY ...>, 36 * and Notation Declarations <!NOTATION ...> 37 */ 38DTD : '<!' .*? '>' -> skip ; 39EntityRef : '&' Name ';' ; 40CharRef : '&#' DIGIT+ ';' 41 | '&#x' HEXDIGIT+ ';' 42 ; 43SEA_WS : (' '|'\t'|'\r'? '\n')+ ; 44 45OPEN : '<' -> pushMode(INSIDE) ; 46XMLDeclOpen : '<?xml' S -> pushMode(INSIDE) ; 47SPECIAL_OPEN: '<?' Name -> more, pushMode(PROC_INSTR) ; 48 49TEXT : ~[<&]+ ; // match any 16 bit char other than < and & 50 51// ----------------- Everything INSIDE of a tag --------------------- 52mode INSIDE; 53 54CLOSE : '>' -> popMode ; 55SPECIAL_CLOSE: '?>' -> popMode ; // close <?xml...?> 56SLASH_CLOSE : '/>' -> popMode ; 57SLASH : '/' ; 58EQUALS : '=' ; 59STRING : '"' ~[<"]* '"' 60 | '\'' ~[<']* '\'' 61 ; 62Name : NameStartChar NameChar* ; 63S : [ \t\r\n] -> skip ; 64 65fragment 66HEXDIGIT : [a-fA-F0-9] ; 67 68fragment 69DIGIT : [0-9] ; 70 71fragment 72NameChar : NameStartChar 73 | '-' | '_' | '.' | DIGIT 74 | '\u00B7' 75 | '\u0300'..'\u036F' 76 | '\u203F'..'\u2040' 77 ; 78 79fragment 80NameStartChar 81 : [:a-zA-Z] 82 | '\u2070'..'\u218F' 83 | '\u2C00'..'\u2FEF' 84 | '\u3001'..'\uD7FF' 85 | '\uF900'..'\uFDCF' 86 | '\uFDF0'..'\uFFFD' 87 ; 88 89// ----------------- Handle <? ... ?> --------------------- 90mode PROC_INSTR; 91 92PI : '?>' -> popMode ; // close <?...?> 93IGNORE : . -> more ; 94