Lexical tokens

The following are the lexical tokens (terminals) recognized in WDL.

// whitespace is a syntactic separator, but is 

// otherwise skipped (dropped)  


WS 		:=  ' ' | '\t'  


NEWLINE 		:=   '\n' | '\r' | '\r''\n'   



// token classes  


NAME 		:=  ['a'-'z''A'-'Z']+  


INT 		:=  ['0'-'9']+  


STRING 		:=  '"' [^ '"' NEWLINE]* '"'  



// basic syntactic characters  


SEMI 		:=  ';'  


COMMA 		:=  ','  


LPAREN 		:=  '('  


RPAREN 		:=  ')'  


LBRACE 		:=  '{'  


RBRACE 		:=  '}'  


EQ 		:=  '='  


BANG 		:=  '!'  


AND 		:=  '&'  


OR 		:=  '|'  


DOT 		:=  '.'  


DOLLAR 		:=  '$'  


PLUS 		:=  '+'