local write_pdf = require'luatagging-objectwriter'

local l = lpeg
local whitespace = l.S'\0\9\10\12\13\32'
local delimiter = l.S'()[]<>/%'
local comment = '%' * (1-l.P'\n'^0) * '\n'
local sep = whitespace + comment
local regular = 1 - (whitespace+delimiter)

local function keyword(word)
  return l.P(word) * -regular
end

local boolean = keyword'true' * l.Cc(true) + keyword'false' * l.Cc(false)
local integer = (l.S'+-'^-1 * l.R'09'^1) / math.tointeger
local real = (l.S'+-'^-1 * (l.R'09'^1 * '.' * l.R'09'^0 + '.' * l.R'09'^1)) / tonumber
local reference = integer * sep^1 * integer * sep^1 * keyword'R'
local string = lpeg.P

local function parse_pdf(text: string): write_pdf.PdfObject
end