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lexer grammar t020fuzzy;
options {
language=JavaScript;
filter=true;
}
@members {
this.outbuf = [];
this.output = function(msg) {
this.outbuf.push(msg);
};
}
IMPORT
: 'import' WS name=QIDStar WS? ';'
;
/** Avoids having "return foo;" match as a field */
RETURN
: 'return' (options {greedy=false;}:.)* ';'
;
CLASS
: 'class' WS name=ID WS? ('extends' WS QID WS?)?
('implements' WS QID WS? (',' WS? QID WS?)*)? '{'
{this.output("found class "+$name.text+"\n");}
;
METHOD
: TYPE WS name=ID WS? '(' ( ARG WS? (',' WS? ARG WS?)* )? ')' WS?
('throws' WS QID WS? (',' WS? QID WS?)*)? '{'
{this.output("found method "+$name.text+"\n");}
;
FIELD
: TYPE WS name=ID '[]'? WS? (';'|'=')
{this.output("found var "+$name.text+"\n");}
;
STAT: ('if'|'while'|'switch'|'for') WS? '(' ;
CALL
: name=QID WS? '('
{this.output("found call "+$name.text+"\n");}
;
COMMENT
: '/*' (options {greedy=false;} : . )* '*/'
{this.output("found comment "+this.getText()+"\n");}
;
SL_COMMENT
: '//' (options {greedy=false;} : . )* '\n'
{this.output("found // comment "+this.getText()+"\n");}
;
STRING
: '"' (options {greedy=false;}: ESC | .)* '"'
;
CHAR
: '\'' (options {greedy=false;}: ESC | .)* '\''
;
WS : (' '|'\t'|'\n')+
;
fragment
QID : ID ('.' ID)*
;
/** QID cannot see beyond end of token so using QID '.*'? somewhere won't
* ever match since k=1 lookahead in the QID loop of '.' will make it loop.
* I made this rule to compensate.
*/
fragment
QIDStar
: ID ('.' ID)* '.*'?
;
fragment
TYPE: QID '[]'?
;
fragment
ARG : TYPE WS ID
;
fragment
ID : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'_'|'0'..'9')*
;
fragment
ESC : '\\' ('"'|'\''|'\\')
;