'use strict';

var Caml = require("./caml.js");
var Bytes = require("./bytes.js");
var Curry = require("./curry.js");
var Belt_List = require("./belt_List.js");
var Caml_string = require("./caml_string.js");
var Caml_js_exceptions = require("./caml_js_exceptions.js");

function init(n, f) {
  return Bytes.unsafe_to_string(Bytes.init(n, f));
}

function sub(s, ofs, len) {
  return Bytes.unsafe_to_string(Bytes.sub(Bytes.unsafe_of_string(s), ofs, len));
}

var blit = Bytes.blit_string;

function concat(sep, xs) {
  return Belt_List.toArray(xs).join(sep);
}

function iter(f, s) {
  for(var i = 0 ,i_finish = s.length; i < i_finish; ++i){
    Curry._1(f, s.codePointAt(i));
  }
}

function iteri(f, s) {
  for(var i = 0 ,i_finish = s.length; i < i_finish; ++i){
    Curry._2(f, i, s.codePointAt(i));
  }
}

function map(f, s) {
  return Bytes.unsafe_to_string(Bytes.map(f, Bytes.unsafe_of_string(s)));
}

function mapi(f, s) {
  return Bytes.unsafe_to_string(Bytes.mapi(f, Bytes.unsafe_of_string(s)));
}

function is_space(param) {
  if (param > 13 || param < 9) {
    return param === 32;
  } else {
    return param !== 11;
  }
}

function trim(s) {
  if (s === "" || !(is_space(s.codePointAt(0)) || is_space(s.codePointAt(s.length - 1 | 0)))) {
    return s;
  } else {
    return Bytes.unsafe_to_string(Bytes.trim(Bytes.unsafe_of_string(s)));
  }
}

function escaped(s) {
  var needs_escape = function (_i) {
    while(true) {
      var i = _i;
      if (i >= s.length) {
        return false;
      }
      var match = s.codePointAt(i);
      if (match < 32) {
        return true;
      }
      if (match > 92 || match < 34) {
        if (match >= 127) {
          return true;
        }
        _i = i + 1 | 0;
        continue ;
      }
      if (match > 91 || match < 35) {
        return true;
      }
      _i = i + 1 | 0;
      continue ;
    };
  };
  if (needs_escape(0)) {
    return Bytes.unsafe_to_string(Bytes.escaped(Bytes.unsafe_of_string(s)));
  } else {
    return s;
  }
}

function index_rec(s, lim, _i, c) {
  while(true) {
    var i = _i;
    if (i >= lim) {
      throw {
            RE_EXN_ID: "Not_found",
            Error: new Error()
          };
    }
    if (s.codePointAt(i) === c) {
      return i;
    }
    _i = i + 1 | 0;
    continue ;
  };
}

function index(s, c) {
  return index_rec(s, s.length, 0, c);
}

function index_rec_opt(s, lim, _i, c) {
  while(true) {
    var i = _i;
    if (i >= lim) {
      return ;
    }
    if (s.codePointAt(i) === c) {
      return i;
    }
    _i = i + 1 | 0;
    continue ;
  };
}

function index_opt(s, c) {
  return index_rec_opt(s, s.length, 0, c);
}

function index_from(s, i, c) {
  var l = s.length;
  if (i < 0 || i > l) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "String.index_from / Bytes.index_from",
          Error: new Error()
        };
  }
  return index_rec(s, l, i, c);
}

function index_from_opt(s, i, c) {
  var l = s.length;
  if (i < 0 || i > l) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "String.index_from_opt / Bytes.index_from_opt",
          Error: new Error()
        };
  }
  return index_rec_opt(s, l, i, c);
}

function rindex_rec(s, _i, c) {
  while(true) {
    var i = _i;
    if (i < 0) {
      throw {
            RE_EXN_ID: "Not_found",
            Error: new Error()
          };
    }
    if (s.codePointAt(i) === c) {
      return i;
    }
    _i = i - 1 | 0;
    continue ;
  };
}

function rindex(s, c) {
  return rindex_rec(s, s.length - 1 | 0, c);
}

function rindex_from(s, i, c) {
  if (i < -1 || i >= s.length) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "String.rindex_from / Bytes.rindex_from",
          Error: new Error()
        };
  }
  return rindex_rec(s, i, c);
}

function rindex_rec_opt(s, _i, c) {
  while(true) {
    var i = _i;
    if (i < 0) {
      return ;
    }
    if (s.codePointAt(i) === c) {
      return i;
    }
    _i = i - 1 | 0;
    continue ;
  };
}

function rindex_opt(s, c) {
  return rindex_rec_opt(s, s.length - 1 | 0, c);
}

function rindex_from_opt(s, i, c) {
  if (i < -1 || i >= s.length) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "String.rindex_from_opt / Bytes.rindex_from_opt",
          Error: new Error()
        };
  }
  return rindex_rec_opt(s, i, c);
}

function contains_from(s, i, c) {
  var l = s.length;
  if (i < 0 || i > l) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "String.contains_from / Bytes.contains_from",
          Error: new Error()
        };
  }
  try {
    index_rec(s, l, i, c);
    return true;
  }
  catch (raw_exn){
    var exn = Caml_js_exceptions.internalToOCamlException(raw_exn);
    if (exn.RE_EXN_ID === "Not_found") {
      return false;
    }
    throw exn;
  }
}

function contains(s, c) {
  return contains_from(s, 0, c);
}

function rcontains_from(s, i, c) {
  if (i < 0 || i >= s.length) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "String.rcontains_from / Bytes.rcontains_from",
          Error: new Error()
        };
  }
  try {
    rindex_rec(s, i, c);
    return true;
  }
  catch (raw_exn){
    var exn = Caml_js_exceptions.internalToOCamlException(raw_exn);
    if (exn.RE_EXN_ID === "Not_found") {
      return false;
    }
    throw exn;
  }
}

function uppercase_ascii(s) {
  return Bytes.unsafe_to_string(Bytes.uppercase_ascii(Bytes.unsafe_of_string(s)));
}

function lowercase_ascii(s) {
  return Bytes.unsafe_to_string(Bytes.lowercase_ascii(Bytes.unsafe_of_string(s)));
}

function capitalize_ascii(s) {
  return Bytes.unsafe_to_string(Bytes.capitalize_ascii(Bytes.unsafe_of_string(s)));
}

function uncapitalize_ascii(s) {
  return Bytes.unsafe_to_string(Bytes.uncapitalize_ascii(Bytes.unsafe_of_string(s)));
}

var compare = Caml.string_compare;

function equal(a, b) {
  return a === b;
}

function split_on_char(sep, s) {
  var r = /* [] */0;
  var j = s.length;
  for(var i = s.length - 1 | 0; i >= 0; --i){
    if (s.codePointAt(i) === sep) {
      r = {
        hd: sub(s, i + 1 | 0, (j - i | 0) - 1 | 0),
        tl: r
      };
      j = i;
    }
    
  }
  return {
          hd: sub(s, 0, j),
          tl: r
        };
}

var make = Caml_string.make;

exports.make = make;
exports.init = init;
exports.sub = sub;
exports.blit = blit;
exports.concat = concat;
exports.iter = iter;
exports.iteri = iteri;
exports.map = map;
exports.mapi = mapi;
exports.trim = trim;
exports.escaped = escaped;
exports.index = index;
exports.index_opt = index_opt;
exports.rindex = rindex;
exports.rindex_opt = rindex_opt;
exports.index_from = index_from;
exports.index_from_opt = index_from_opt;
exports.rindex_from = rindex_from;
exports.rindex_from_opt = rindex_from_opt;
exports.contains = contains;
exports.contains_from = contains_from;
exports.rcontains_from = rcontains_from;
exports.uppercase_ascii = uppercase_ascii;
exports.lowercase_ascii = lowercase_ascii;
exports.capitalize_ascii = capitalize_ascii;
exports.uncapitalize_ascii = uncapitalize_ascii;
exports.compare = compare;
exports.equal = equal;
exports.split_on_char = split_on_char;
/* No side effect */