Source file lexer_utils.ml
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open Lexing
let pspos lexbuf =
let p = lexbuf.lex_curr_p in
Printf.sprintf
"File: %s, line: %d, col: %d, token: %s"
p.pos_fname
p.pos_lnum
(p.pos_cnum - p.pos_bol)
(lexeme lexbuf)
let lexeme lexbuf = Lexing.lexeme lexbuf
let new_line lexbuf = Lexing.new_line lexbuf
let len_l = ref 0
let lsbuf = Buffer.create 80
let in_lcomm lexbuf =
let value = lexeme lexbuf in
len_l := String.length value - 2
let out_lcomm lexbuf longcomm eolcomm =
let value = lexeme lexbuf in
let n = String.length value + 1 in
if n = !len_l then
eolcomm lexbuf
else longcomm lexbuf
let in_lstr lexbuf =
Buffer.clear lsbuf;
let value = lexeme lexbuf in
Buffer.add_string lsbuf value;
len_l := String.length value
let out_lstr lexbuf longstr eolstr =
let value = lexeme lexbuf in
let n = String.length value + 1 in
if n = !len_l then
begin
Buffer.add_string lsbuf value;
eolstr lexbuf
end
else
begin
Buffer.add_string lsbuf value;
longstr lexbuf
end
let add_buf chr = Buffer.add_char lsbuf chr
let get_buf () = Buffer.contents lsbuf
let nl_buf () =
Buffer.add_string lsbuf "\n"