Moved commons and concourse editor to 'headless-services'

headless-services/commons/java-properties/resources/JavaProperties.g4

@@ -0,0 +1,87 @@
+/*******************************************************************************
+ * Copyright (c) 2016 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+ 
+/**
+ * Based on the answer to this Stack Overflow question:
+ * http://stackoverflow.com/questions/6132529/antlr-parsing-java-properties 
+ */
+ 
+grammar JavaProperties;
+
+parse
+  :  line* EOF
+  ;
+
+line
+  :  propertyLine
+  |  commentLine
+  |  emptyLine
+  ;
+  
+propertyLine
+  : Space* keyValuePair
+  ;
+
+commentLine
+  : Space* (Exclamation | Number) ~(LineBreak)* (LineBreak | EOF)
+  ;
+  
+emptyLine
+  : Space* LineBreak
+  ;
+  
+keyValuePair
+  :  key separatorAndValue (LineBreak | EOF)
+  ;
+
+key
+  :  keyChar+
+  ;
+
+keyChar
+  :  IdentifierChar 
+  |  Backslash (Colon | Equals)
+  ;
+  
+separatorAndValue
+  :  (Space | Colon | Equals) valueChar*
+  ;
+
+valueChar
+  :  IdentifierChar
+  |  Exclamation
+  |  Number
+  |  Space
+  |  Backslash LineBreak
+  |  Equals
+  |  Colon
+  ;
+
+Backslash : '\\';
+Colon     : ':';
+Equals    : '=';
+Exclamation: '!';
+Number    : '#';
+
+LineBreak
+  :  '\r'? '\n'
+  |  '\r'
+  ;
+
+Space
+  :  ' ' 
+  |  '\t' 
+  |  '\f'
+  ;
+
+IdentifierChar
+  : ~(' ' | ':' | '=' | '\r' | '\n' )
+  ;