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|
{
open Curly_parser
exception Error of string
}
rule token = parse
| [' ' '\t' '\n']
{ token lexbuf }
| '{'
{ LEFT_BRACE }
| '}'
{ RIGHT_BRACE }
| '['
{ LEFT_BRACKET }
| ']'
{ RIGHT_BRACKET }
| ';'
{ SEMI }
| ['a' -'z' 'A' - 'Z' '0' - '9' '.' '/' ':' '@' '$' '-' ]+ as s
{ IDENTIFIER s}
| eof
{ EOF }
| '"'
{ read_string (Buffer.create 16) lexbuf }
| "//" [^ '\n']+ '\n'
{ Lexing.new_line lexbuf ; token lexbuf }
| "/*"
{ read_comment (Buffer.create 16) lexbuf }
| _
{ raise (Error (Printf.sprintf "At offset %d: unexpected character.\n" (Lexing.lexeme_start lexbuf))) }
and read_string buf =
parse
| '"' { STRING (Buffer.contents buf) }
| '\\' '/' { Buffer.add_char buf '/'; read_string buf lexbuf }
| '\\' '\\' { Buffer.add_char buf '\\'; read_string buf lexbuf }
| '\\' 'b' { Buffer.add_char buf '\b'; read_string buf lexbuf }
| '\\' 'f' { Buffer.add_char buf '\012'; read_string buf lexbuf }
| '\\' 'n' { Buffer.add_char buf '\n'; read_string buf lexbuf }
| '\\' 'r' { Buffer.add_char buf '\r'; read_string buf lexbuf }
| '\\' 't' { Buffer.add_char buf '\t'; read_string buf lexbuf }
| '\\' '\'' { Buffer.add_char buf '\''; read_string buf lexbuf }
| '\\' '"' { Buffer.add_char buf '"'; read_string buf lexbuf }
| '\n' { Lexing.new_line lexbuf; Buffer.add_char buf '\n'; read_string buf lexbuf }
| [^ '"' '\\']+
{ Buffer.add_string buf (Lexing.lexeme lexbuf);
read_string buf lexbuf
}
| _ { raise (Error (Printf.sprintf "Illegal string character: %s" (Lexing.lexeme lexbuf))) }
| eof { raise (Error ("String is not terminated")) }
and read_comment buf =
parse
| "*/"
{ COMMENT (Buffer.contents buf) }
| _
{ Buffer.add_string buf (Lexing.lexeme lexbuf);
read_comment buf lexbuf
}
|
