format grammar files with Antlr4Formatter

examples/antlr4/Cpp/src/antlr4/TLexer.g4

@@ -1,87 +1,180 @@
 lexer grammar TLexer;
-
 // These are all supported lexer sections:
 
 // Lexer file header. Appears at the top of h + cpp files. Use e.g. for copyrights.
-@lexer::header {/* lexer header section */}
 
+@ lexer :: header
+{/* lexer header section */}
 // Appears before any #include in h + cpp files.
-@lexer::preinclude {/* lexer precinclude section */}
 
+@ lexer :: preinclude
+{/* lexer precinclude section */}
 // Follows directly after the standard #includes in h + cpp files.
-@lexer::postinclude {
+
+@ lexer :: postinclude
+{
 /* lexer postinclude section */
 #ifndef _WIN32
 #pragma GCC diagnostic ignored "-Wunused-parameter"
 #endif
 }
-
 // Directly preceds the lexer class declaration in the h file (e.g. for additional types etc.).
-@lexer::context {/* lexer context section */}
 
+@ lexer :: context
+{/* lexer context section */}
 // Appears in the public part of the lexer in the h file.
-@lexer::members {/* public lexer declarations section */
+
+@ lexer :: members
+{/* public lexer declarations section */
 bool canTestFoo() { return true; }
 bool isItFoo() { return true; }
 bool isItBar() { return true; }
 
 void myFooLexerAction() { /* do something*/ };
 void myBarLexerAction() { /* do something*/ };
 }
-
 // Appears in the private part of the lexer in the h file.
-@lexer::declarations {/* private lexer declarations/members section */}
 
+@ lexer :: declarations
+{/* private lexer declarations/members section */}
 // Appears in line with the other class member definitions in the cpp file.
-@lexer::definitions {/* lexer definitions section */}
-
-channels { CommentsChannel, DirectiveChannel }
-
-tokens {
-	DUMMY
-}
-
-Return: 'return';
-Continue: 'continue';
-
-INT: Digit+;
-Digit: [0-9];
-
-ID: LETTER (LETTER | '0'..'9')*;
-fragment LETTER : [a-zA-Z\u0080-\u{10FFFF}];
-
-LessThan: '<';
-GreaterThan:  '>';
-Equal: '=';
-And: 'and';
-
-Colon: ':';
-Semicolon: ';';
-Plus: '+';
-Minus: '-';
-Star: '*';
-OpenPar: '(';
-ClosePar: ')';
-OpenCurly: '{' -> pushMode(Mode1);
-CloseCurly: '}' -> popMode;
-QuestionMark: '?';
-Comma: ',' -> skip;
-Dollar: '$' -> more, mode(Mode1);
-Ampersand: '&' -> type(DUMMY);
-
-String: '"' .*? '"';
-Foo: {canTestFoo()}? 'foo' {isItFoo()}? { myFooLexerAction(); };
-Bar: 'bar' {isItBar()}? { myBarLexerAction(); };
-Any: Foo Dot Bar? DotDot Baz;
 
-Comment : '#' ~[\r\n]* '\r'? '\n' -> channel(CommentsChannel);
-WS: [ \t\r\n]+ -> channel(99);
+@ lexer :: definitions
+{/* lexer definitions section */}
+channels { CommentsChannel , DirectiveChannel }
+tokens { DUMMY }
+Return
+   : 'return'
+   ;
+
+Continue
+   : 'continue'
+   ;
+
+INT
+   : Digit+
+   ;
+
+Digit
+   : [0-9]
+   ;
+
+ID
+   : LETTER (LETTER | '0' .. '9')*
+   ;
+
+fragment LETTER
+   : [a-zA-Z\u0080-\u{10FFFF}]
+   ;
+
+LessThan
+   : '<'
+   ;
+
+GreaterThan
+   : '>'
+   ;
+
+Equal
+   : '='
+   ;
+
+And
+   : 'and'
+   ;
+
+Colon
+   : ':'
+   ;
+
+Semicolon
+   : ';'
+   ;
+
+Plus
+   : '+'
+   ;
+
+Minus
+   : '-'
+   ;
+
+Star
+   : '*'
+   ;
+
+OpenPar
+   : '('
+   ;
+
+ClosePar
+   : ')'
+   ;
+
+OpenCurly
+   : '{' -> pushMode (Mode1)
+   ;
+
+CloseCurly
+   : '}' -> popMode
+   ;
+
+QuestionMark
+   : '?'
+   ;
+
+Comma
+   : ',' -> skip
+   ;
+
+Dollar
+   : '$' -> more , mode (Mode1)
+   ;
+
+Ampersand
+   : '&' -> type (DUMMY)
+   ;
+
+String
+   : '"' .*? '"'
+   ;
+
+Foo
+   :
+   {canTestFoo()}? 'foo'
+   {isItFoo()}?
+   { myFooLexerAction(); }
+   ;
 
-fragment Baz: 'Baz';
+Bar
+   : 'bar'
+   {isItBar()}?
+   { myBarLexerAction(); }
+   ;
+
+Any
+   : Foo Dot Bar? DotDot Baz
+   ;
+
+Comment
+   : '#' ~ [\r\n]* '\r'? '\n' -> channel (CommentsChannel)
+   ;
+
+WS
+   : [ \t\r\n]+ -> channel (99)
+   ;
+
+fragment Baz
+   : 'Baz'
+   ;
 
 mode Mode1;
-Dot: '.';
+Dot
+   : '.'
+   ;
 
 mode Mode2;
-DotDot: '..';
+DotDot
+   : '..'
+   ;