'use strict';

var Caml = require("./caml.js");

var for_in = (function(o,foo){
        for (var x in o) { foo(x) }});

var obj_dup = (function(x){
  if(Array.isArray(x)){
    var len = x.length  
    var v = new Array(len)
    for(var i = 0 ; i < len ; ++i){
      v[i] = x[i]
    }
    if(x.TAG !== undefined){
      v.TAG = x.TAG // TODO this can be removed eventually
    }  
    return v 
  } 
  return Object.assign({},x)    
});

var update_dummy = (function(x,y){
  var k  
  if(Array.isArray(y)){
    for(k = 0; k < y.length ; ++k){
      x[k] = y[k]
    }
    if(y.TAG !== undefined){
      x.TAG = y.TAG
    }
  } else {
    for (var k in y){
      x[k] = y[k]
    }
  }
});

function compare(a, b) {
  if (a === b) {
    return 0;
  }
  var a_type = typeof a;
  var b_type = typeof b;
  switch (a_type) {
    case "boolean" :
        if (b_type === "boolean") {
          return Caml.bool_compare(a, b);
        }
        break;
    case "function" :
        if (b_type === "function") {
          throw {
                RE_EXN_ID: "Invalid_argument",
                _1: "compare: functional value",
                Error: new Error()
              };
        }
        break;
    case "number" :
        if (b_type === "number") {
          return Caml.int_compare(a, b);
        }
        break;
    case "string" :
        if (b_type === "string") {
          return Caml.string_compare(a, b);
        } else {
          return 1;
        }
    case "undefined" :
        return -1;
    default:
      
  }
  switch (b_type) {
    case "string" :
        return -1;
    case "undefined" :
        return 1;
    default:
      if (a_type === "boolean") {
        return 1;
      }
      if (b_type === "boolean") {
        return -1;
      }
      if (a_type === "function") {
        return 1;
      }
      if (b_type === "function") {
        return -1;
      }
      if (a_type === "number") {
        if (b === null || b.BS_PRIVATE_NESTED_SOME_NONE !== undefined) {
          return 1;
        } else {
          return -1;
        }
      }
      if (b_type === "number") {
        if (a === null || a.BS_PRIVATE_NESTED_SOME_NONE !== undefined) {
          return -1;
        } else {
          return 1;
        }
      }
      if (a === null) {
        if (b.BS_PRIVATE_NESTED_SOME_NONE !== undefined) {
          return 1;
        } else {
          return -1;
        }
      }
      if (b === null) {
        if (a.BS_PRIVATE_NESTED_SOME_NONE !== undefined) {
          return -1;
        } else {
          return 1;
        }
      }
      if (a.BS_PRIVATE_NESTED_SOME_NONE !== undefined) {
        if (b.BS_PRIVATE_NESTED_SOME_NONE !== undefined) {
          return aux_obj_compare(a, b);
        } else {
          return -1;
        }
      }
      var tag_a = a.TAG | 0;
      var tag_b = b.TAG | 0;
      if (tag_a === 248) {
        return Caml.int_compare(a[1], b[1]);
      }
      if (tag_a === 251) {
        throw {
              RE_EXN_ID: "Invalid_argument",
              _1: "equal: abstract value",
              Error: new Error()
            };
      }
      if (tag_a !== tag_b) {
        if (tag_a < tag_b) {
          return -1;
        } else {
          return 1;
        }
      }
      var len_a = a.length | 0;
      var len_b = b.length | 0;
      if (len_a === len_b) {
        if (Array.isArray(a)) {
          var _i = 0;
          while(true) {
            var i = _i;
            if (i === len_a) {
              return 0;
            }
            var res = compare(a[i], b[i]);
            if (res !== 0) {
              return res;
            }
            _i = i + 1 | 0;
            continue ;
          };
        } else if ((a instanceof Date && b instanceof Date)) {
          return (a - b);
        } else {
          return aux_obj_compare(a, b);
        }
      } else if (len_a < len_b) {
        var _i$1 = 0;
        while(true) {
          var i$1 = _i$1;
          if (i$1 === len_a) {
            return -1;
          }
          var res$1 = compare(a[i$1], b[i$1]);
          if (res$1 !== 0) {
            return res$1;
          }
          _i$1 = i$1 + 1 | 0;
          continue ;
        };
      } else {
        var _i$2 = 0;
        while(true) {
          var i$2 = _i$2;
          if (i$2 === len_b) {
            return 1;
          }
          var res$2 = compare(a[i$2], b[i$2]);
          if (res$2 !== 0) {
            return res$2;
          }
          _i$2 = i$2 + 1 | 0;
          continue ;
        };
      }
  }
}

function aux_obj_compare(a, b) {
  var min_key_lhs = {
    contents: undefined
  };
  var min_key_rhs = {
    contents: undefined
  };
  var do_key = function (param, key) {
    var min_key = param[2];
    var b = param[1];
    if (!(!Object.prototype.hasOwnProperty.call(b, key) || compare(param[0][key], b[key]) > 0)) {
      return ;
    }
    var mk = min_key.contents;
    if (mk !== undefined && key >= mk) {
      return ;
    } else {
      min_key.contents = key;
      return ;
    }
  };
  var partial_arg = [
    a,
    b,
    min_key_rhs
  ];
  var do_key_a = function (param) {
    return do_key(partial_arg, param);
  };
  var partial_arg$1 = [
    b,
    a,
    min_key_lhs
  ];
  var do_key_b = function (param) {
    return do_key(partial_arg$1, param);
  };
  for_in(a, do_key_a);
  for_in(b, do_key_b);
  var match = min_key_lhs.contents;
  var match$1 = min_key_rhs.contents;
  if (match !== undefined) {
    if (match$1 !== undefined) {
      return Caml.string_compare(match, match$1);
    } else {
      return -1;
    }
  } else if (match$1 !== undefined) {
    return 1;
  } else {
    return 0;
  }
}

function equal(a, b) {
  if (a === b) {
    return true;
  }
  var a_type = typeof a;
  if (a_type === "string" || a_type === "number" || a_type === "boolean" || a_type === "undefined" || a === null) {
    return false;
  }
  var b_type = typeof b;
  if (a_type === "function" || b_type === "function") {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "equal: functional value",
          Error: new Error()
        };
  }
  if (b_type === "number" || b_type === "undefined" || b === null) {
    return false;
  }
  var tag_a = a.TAG | 0;
  var tag_b = b.TAG | 0;
  if (tag_a === 248) {
    return a[1] === b[1];
  }
  if (tag_a === 251) {
    throw {
          RE_EXN_ID: "Invalid_argument",
          _1: "equal: abstract value",
          Error: new Error()
        };
  }
  if (tag_a !== tag_b) {
    return false;
  }
  var len_a = a.length | 0;
  var len_b = b.length | 0;
  if (len_a === len_b) {
    if (Array.isArray(a)) {
      var _i = 0;
      while(true) {
        var i = _i;
        if (i === len_a) {
          return true;
        }
        if (!equal(a[i], b[i])) {
          return false;
        }
        _i = i + 1 | 0;
        continue ;
      };
    } else if ((a instanceof Date && b instanceof Date)) {
      return !(a > b || a < b);
    } else {
      var result = {
        contents: true
      };
      var do_key_a = function (key) {
        if (!Object.prototype.hasOwnProperty.call(b, key)) {
          result.contents = false;
          return ;
        }
        
      };
      var do_key_b = function (key) {
        if (!Object.prototype.hasOwnProperty.call(a, key) || !equal(b[key], a[key])) {
          result.contents = false;
          return ;
        }
        
      };
      for_in(a, do_key_a);
      if (result.contents) {
        for_in(b, do_key_b);
      }
      return result.contents;
    }
  } else {
    return false;
  }
}

function equal_null(x, y) {
  if (y !== null) {
    return equal(x, y);
  } else {
    return x === y;
  }
}

function equal_undefined(x, y) {
  if (y !== undefined) {
    return equal(x, y);
  } else {
    return x === y;
  }
}

function equal_nullable(x, y) {
  if (y == null) {
    return x === y;
  } else {
    return equal(x, y);
  }
}

function notequal(a, b) {
  return !equal(a, b);
}

function greaterequal(a, b) {
  return compare(a, b) >= 0;
}

function greaterthan(a, b) {
  return compare(a, b) > 0;
}

function lessequal(a, b) {
  return compare(a, b) <= 0;
}

function lessthan(a, b) {
  return compare(a, b) < 0;
}

function min(x, y) {
  if (compare(x, y) <= 0) {
    return x;
  } else {
    return y;
  }
}

function max(x, y) {
  if (compare(x, y) >= 0) {
    return x;
  } else {
    return y;
  }
}

exports.obj_dup = obj_dup;
exports.update_dummy = update_dummy;
exports.compare = compare;
exports.equal = equal;
exports.equal_null = equal_null;
exports.equal_undefined = equal_undefined;
exports.equal_nullable = equal_nullable;
exports.notequal = notequal;
exports.greaterequal = greaterequal;
exports.greaterthan = greaterthan;
exports.lessthan = lessthan;
exports.lessequal = lessequal;
exports.min = min;
exports.max = max;
/* No side effect */