caml_bytes.js

'use strict';

var Caml_builtin_exceptions = require("./caml_builtin_exceptions.js");

function get(s, i) {
  if (i < 0 || i >= s.length) {
    throw [
          Caml_builtin_exceptions.invalid_argument,
          "index out of bounds"
        ];
  }
  return s[i];
}

function caml_fill_bytes(s, i, l, c) {
  if (l <= 0) {
    return ;
  }
  for(var k = i ,k_finish = (l + i | 0) - 1 | 0; k <= k_finish; ++k){
    s[k] = c;
  }
  
}

function caml_create_bytes(len) {
  if (len < 0) {
    throw [
          Caml_builtin_exceptions.invalid_argument,
          "String.create"
        ];
  }
  var result = new Array(len);
  for(var i = 0 ,i_finish = len - 1 | 0; i <= i_finish; ++i){
    result[i] = /* "\000" */0;
  }
  return result;
}

function caml_blit_bytes(s1, i1, s2, i2, len) {
  if (len <= 0) {
    return ;
  }
  if (s1 === s2) {
    if (i1 < i2) {
      var range_a = (s1.length - i2 | 0) - 1 | 0;
      var range_b = len - 1 | 0;
      var range = range_a > range_b ? range_b : range_a;
      for(var j = range; j >= 0; --j){
        s1[i2 + j | 0] = s1[i1 + j | 0];
      }
      return ;
    }
    if (i1 <= i2) {
      return ;
    }
    var range_a$1 = (s1.length - i1 | 0) - 1 | 0;
    var range_b$1 = len - 1 | 0;
    var range$1 = range_a$1 > range_b$1 ? range_b$1 : range_a$1;
    for(var k = 0; k <= range$1; ++k){
      s1[i2 + k | 0] = s1[i1 + k | 0];
    }
    return ;
  }
  var off1 = s1.length - i1 | 0;
  if (len <= off1) {
    for(var i = 0 ,i_finish = len - 1 | 0; i <= i_finish; ++i){
      s2[i2 + i | 0] = s1[i1 + i | 0];
    }
    return ;
  }
  for(var i$1 = 0 ,i_finish$1 = off1 - 1 | 0; i$1 <= i_finish$1; ++i$1){
    s2[i2 + i$1 | 0] = s1[i1 + i$1 | 0];
  }
  for(var i$2 = off1 ,i_finish$2 = len - 1 | 0; i$2 <= i_finish$2; ++i$2){
    s2[i2 + i$2 | 0] = /* "\000" */0;
  }
  
}

function bytes_to_string(a) {
  var i = 0;
  var len = a.length;
  var s = "";
  var s_len = len;
  if (i === 0 && len <= 4096 && len === a.length) {
    return String.fromCharCode.apply(null, a);
  }
  var offset = 0;
  while(s_len > 0) {
    var next = s_len < 1024 ? s_len : 1024;
    var tmp_bytes = new Array(next);
    caml_blit_bytes(a, offset, tmp_bytes, 0, next);
    s = s + String.fromCharCode.apply(null, tmp_bytes);
    s_len = s_len - next | 0;
    offset = offset + next | 0;
  };
  return s;
}

function caml_blit_string(s1, i1, s2, i2, len) {
  if (len <= 0) {
    return ;
  }
  var off1 = s1.length - i1 | 0;
  if (len <= off1) {
    for(var i = 0 ,i_finish = len - 1 | 0; i <= i_finish; ++i){
      s2[i2 + i | 0] = s1.charCodeAt(i1 + i | 0);
    }
    return ;
  }
  for(var i$1 = 0 ,i_finish$1 = off1 - 1 | 0; i$1 <= i_finish$1; ++i$1){
    s2[i2 + i$1 | 0] = s1.charCodeAt(i1 + i$1 | 0);
  }
  for(var i$2 = off1 ,i_finish$2 = len - 1 | 0; i$2 <= i_finish$2; ++i$2){
    s2[i2 + i$2 | 0] = /* "\000" */0;
  }
  
}

function bytes_of_string(s) {
  var len = s.length;
  var res = new Array(len);
  for(var i = 0 ,i_finish = len - 1 | 0; i <= i_finish; ++i){
    res[i] = s.charCodeAt(i);
  }
  return res;
}

exports.caml_create_bytes = caml_create_bytes;
exports.caml_fill_bytes = caml_fill_bytes;
exports.get = get;
exports.bytes_to_string = bytes_to_string;
exports.caml_blit_bytes = caml_blit_bytes;
exports.caml_blit_string = caml_blit_string;
exports.bytes_of_string = bytes_of_string;
/* No side effect */