js_vector.js

'use strict';

var List = require("./list.js");

function filterInPlace(p, a) {
  var i = 0;
  var j = 0;
  while(i < a.length) {
    var v = a[i];
    if (p(v)) {
      a[j] = v;
      j = j + 1 | 0;
    }
    i = i + 1 | 0;
  };
  a.splice(j);
  return /* () */0;
}

function empty(a) {
  a.splice(0);
  return /* () */0;
}

function pushBack(x, xs) {
  xs.push(x);
  return /* () */0;
}

function memByRef(x, xs) {
  return +(xs.indexOf(x) >= 0);
}

function iter(f, xs) {
  for(var i = 0 ,i_finish = xs.length - 1 | 0; i <= i_finish; ++i){
    f(xs[i]);
  }
  return /* () */0;
}

function iteri(f, a) {
  for(var i = 0 ,i_finish = a.length - 1 | 0; i <= i_finish; ++i){
    f(i, a[i]);
  }
  return /* () */0;
}

function ofList(xs) {
  if (xs) {
    var a = new Array(List.length(xs));
    var _i = 0;
    var _param = xs;
    while(true) {
      var param = _param;
      var i = _i;
      if (param) {
        a[i] = param[0];
        _param = param[1];
        _i = i + 1 | 0;
        continue ;
        
      } else {
        return a;
      }
    };
  } else {
    return /* array */[];
  }
}

function toList(a) {
  var _i = a.length - 1 | 0;
  var _res = /* [] */0;
  while(true) {
    var res = _res;
    var i = _i;
    if (i < 0) {
      return res;
    } else {
      _res = /* :: */[
        a[i],
        res
      ];
      _i = i - 1 | 0;
      continue ;
      
    }
  };
}

function init(n, f) {
  var v = new Array(n);
  for(var i = 0 ,i_finish = n - 1 | 0; i <= i_finish; ++i){
    v[i] = f(i);
  }
  return v;
}

function copy(x) {
  var len = x.length;
  var b = new Array(len);
  for(var i = 0 ,i_finish = len - 1 | 0; i <= i_finish; ++i){
    b[i] = x[i];
  }
  return b;
}

function map(f, a) {
  var l = a.length;
  var r = new Array(l);
  for(var i = 0 ,i_finish = l - 1 | 0; i <= i_finish; ++i){
    r[i] = f(a[i]);
  }
  return r;
}

function foldLeft(f, x, a) {
  var r = x;
  for(var i = 0 ,i_finish = a.length - 1 | 0; i <= i_finish; ++i){
    r = f(r, a[i]);
  }
  return r;
}

function foldRight(f, a, x) {
  var r = x;
  for(var i = a.length - 1 | 0; i >= 0; --i){
    r = f(a[i], r);
  }
  return r;
}

function mapi(f, a) {
  var l = a.length;
  if (l) {
    var r = new Array(l);
    for(var i = 0 ,i_finish = l - 1 | 0; i <= i_finish; ++i){
      r[i] = f(i, a[i]);
    }
    return r;
  } else {
    return /* array */[];
  }
}

exports.filterInPlace = filterInPlace;
exports.empty         = empty;
exports.pushBack      = pushBack;
exports.copy          = copy;
exports.memByRef      = memByRef;
exports.iter          = iter;
exports.iteri         = iteri;
exports.ofList        = ofList;
exports.toList        = toList;
exports.map           = map;
exports.mapi          = mapi;
exports.foldLeft      = foldLeft;
exports.foldRight     = foldRight;
exports.init          = init;
/* No side effect */