fr.cenotelie.commons.utils.json.Json.gram Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright (c) 2016 Association Cénotélie (cenotelie.fr)
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General
 * Public License along with this program.
 * If not, see .
 ******************************************************************************/

grammar Json
{
	options
	{
		Axiom = "document";
		Separator = "BLANK";
	}
	terminals
	{
		NEW_LINE		-> U+000D /* CR */
						|  U+000A /* LF */
						|  U+000D U+000A /* CR LF */
						|  U+2028 /* LS */
						|  U+2029 /* PS */ ;
		WHITE_SPACE		-> U+0020 | U+0009 | U+000B | U+000C ;
		COMMENT			-> '#' (.* - (.* NEW_LINE .*)) NEW_LINE ;
		BLANK			-> NEW_LINE | WHITE_SPACE | COMMENT ;

		LITERAL_INTEGER			-> ('+' | '-')? [0-9]+ ;
		LITERAL_DECIMAL			-> ('+' | '-')? [0-9]* '.' [0-9]+ ;
		LITERAL_DOUBLE			-> ('+' | '-')? ( [0-9]+ '.' [0-9]* [eE] ('+' | '-')? [0-9]+
												| '.' [0-9]+ [eE] ('+' | '-')? [0-9]+
												| [0-9]+ [eE] ('+' | '-')? [0-9]+
												) ;
		LITERAL_STRING	-> '"' (
									. - (U+0022 | U+005C | U+000A | U+000D)
									| '\\' ([tbnrf"'] | '\\')
									| '\\u' [a-fA-F0-9]{4}
									| '\\U' [a-fA-F0-9]{8}
									)* '"' ;
		LITERAL_NULL	-> 'null' ;
		LITERAL_TRUE	-> 'true' ;
		LITERAL_FALSE	-> 'false';
	}
	rules
	{
		document		-> object^ | array^ ;
		object			-> '{'! (member (','! member)*)? '}'! ;
		member			-> LITERAL_STRING ':'! value ;
		array			-> '['! (value (','! value)*)? ']'! ;

		value			-> object^ | array^
						|  LITERAL_INTEGER^
						|  LITERAL_DECIMAL^
						|  LITERAL_DOUBLE^
						|  LITERAL_STRING^
						|  LITERAL_NULL^
						|  LITERAL_TRUE^
						|  LITERAL_FALSE^ ;
	}
}