gistfile1.txt

SDLangGrammar: 
  #################
	###### Tags #####
	#################
		Tag			<	Name? (Value :Spacing)* (Attribute :Spacing)* ('=' '{' (Tag :Spacing)* '}')?
		Attribute   <	Name '=' Literal
		Name		<	Identifier ':' Identifier
		Identifier	<~	![0-9] IdChar+
		IdChar		<-	![=:{}#/] !backquote !quote !doublequote !backslash .
	
	#####################
	###### Literals #####
	#####################
		Literal	<-	Null / Base64 / TimeSpan / DateTime / Number / Char / String
		Null	<-	"null"
	
		#---- base 64 ----
			Base64	<~ (Alpha / alpha / digit / '+' / '/')+ ("=" / "==" / "===")?

		#---- date & time ----
			TimeSpan	<-  (digits 'd:')? Hour ':' Minute ':' Second ('.' Milsec)?
			DateTime	<- Year '/' Month '/' Day (:Spacing Hour ':' Minute (':' Second ('.' Milsec)?)? ('-' Zone)?)?
			Year	<~	digit digit digit digit
			Month	<~	digit digit
			Day		<~	digit digit
			Hour	<~  digit digit
			Minute	<~	digit digit
			Second  <~	digit digit
			Milsec  <~	digit digit digit
			Zone	<~  Alpha Alpha? Alpha? Alpha? Alpha?


		#---- number literals ----
			Number		 <-		Boolean / Decimal / Double / Float / LongInteger / Integer
			Boolean		 <-		"true" / "false" / "on" / "off"
			Decimal		 <-		Sign? digits '.' digits ("BD" / "bd")
			Double		 <-		Sign? digits '.' digits ('D' / 'd' / eps)
			Float		 <-		Sign? digits '.' digits ('F' / 'f')
			LongInteger	 <-		Sign? digits ('L' / 'l')
			Integer		 <-		Sign? digits
			Sign		 <-		'-' / '+'
	

		#---- character literal ----
			Char	<-	quote !quote . quote
	

		#---- string literals ----
			String				<-	DoublequoteString / BackquoteString
			DoublequoteString	<-	doublequote (!doublequote backslash('n' / 'r' / 't' / backslash / doublequote / eol) / .)* doublequote
			BackquoteString		<-	backquote ~(!backquote .)* backqoute


	###############################
	###### Spacing & Comments #####
	###############################
		# space arrow "< " in a Pegged rule implicitly uses this Spacing definition between each expression, except in e* & e+.
		# For those do (e :Spacing)+.
		
		Spacing		<- (blank / Comment)+
		Comment		<: LineComment / BlockComment
`