%header%

GRAMMARTYPE = "LL"

DESCRIPTION = "A grammar for a simple arithmetic language."

AUTHOR      = "Per Cederberg, <per at percederberg dot net>"
VERSION     = "1.0"
DATE        = "10 June 2003"

LICENSE     = "Permission is granted to copy this document verbatim in any
               medium, provided that this copyright notice is left intact."

COPYRIGHT   = "Copyright (c) 2003 Per Cederberg. All rights reserved."


%tokens%
 

CHARS			     = <<[^{}(?=<%)(?=%>)]*>>
STARTCODEBLOCK               = "<%"
ENDCODEBLOCK		     = "%>"
BOOSTARTINDENT		     = "{"
BOOENDINDENT		     = "}"
WHITESPACE                   = <<[ \t\n\r]+>> %ignore%



%productions%
SCRIPT = TEMPLATE+;
TEMPLATE = TEMPLATEBLOCK|BOOCODEBLOCK;
TEMPLATEBLOCK  = CHARS|BOOSTARTINDENT|BOOENDINDENT;
BOOCODEBLOCK = STARTCODEBLOCK BOOCODE+ ENDCODEBLOCK;
BOOCODE =  BOOSTARTINDENT|CODE|BOOENDINDENT;
CODE = CHARS;