bundle.min.js

/**
 * @license
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Matthew Crumley
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

! function (t, e) {
  "object" == typeof exports && "undefined" != typeof module ? module.exports = e() : "function" == typeof define && define.amd ? define(e) : t.exprEval = e()
}(this, function () {
  "use strict";

  function t(t, e) {
    this.type = t, this.value = void 0 !== e && null !== e ? e : 0
  }

  function e(e) {
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  function s(e) {
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  function r(e) {
    return new t(Z, e)
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  function n(e, s, r, i, o) {
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        for (; c.length > 0;) l.push(c.shift());
        l.push(new t(st, n(v.value, s, r, i, o)))
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        for (; c.length > 0;) l.push(c.shift());
        l.push(v)
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    for (; c.length > 0;) l.push(c.shift());
    return l
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  function i(n, o, a) {
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      var u = n[p], c = u.type;
      if (c === tt && u.value === o) for (var l = 0; l < a.tokens.length; l++) {
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        f = v.type === Q ? e(v.value) : v.type === Y ? s(v.value) : v.type === Z ? r(v.value) : new t(v.type, v.value), h.push(f)
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    return h
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  function o(t, e, s) {
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      var u = t[p], c = u.type;
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        var l = s[u.value];
        if (void 0 === l) throw new Error("undefined variable: " + u.value);
        h.push(l)
      } else if (c === Q) r = h.pop(), a = e.unaryOps[u.value], h.push(a(r)); else if (c === et) {
        for (var f = u.value, v = []; f-- > 0;) v.unshift(h.pop());
        if ( ! (a = h.pop()).apply || ! a.call) throw new Error(a + " is not a function");
        h.push(a.apply(void 0, v))
      } else if (c === st) h.push(u.value); else {
        if (c !== rt) throw new Error("invalid Expression");
        r = h.pop(), h.push(r[u.value])
      }
    }
    if (h.length > 1) throw new Error("invalid Expression (parity)");
    return h[0]
  }

  function a(t, e) {
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      var u = t[p], c = u.type;
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        if (n = o.pop(), r = o.pop(), s = o.pop(), "?" !== (i = u.value)) throw new Error("invalid Expression");
        o.push("(" + s + " ? " + r + " : " + n + ")")
      } else if (c === tt) o.push(u.value); else if (c === Q) s = o.pop(), "-" === (i = u.value) || "+" === i ? o.push("(" + i + s + ")") : e ? "not" === i ? o.push("(!" + s + ")") : "!" === i ? o.push("fac(" + s + ")") : o.push(i + "(" + s + ")") : "!" === i ? o.push("(" + s + "!)") : o.push("(" + i + " " + s + ")"); else if (c === et) {
        for (var l = u.value, f = []; l-- > 0;) f.unshift(o.pop());
        i = o.pop(), o.push(i + "(" + f.join(", ") + ")")
      } else if (c === rt) s = o.pop(), o.push(s + "." + u.value); else {
        if (c !== st) throw new Error("invalid Expression");
        o.push("(" + a(u.value, e) + ")")
      }
    }
    if (o.length > 1) throw new Error("invalid Expression (parity)");
    return String(o[0])
  }

  function h(t) {
    return "string" == typeof t ? JSON.stringify(t).replace(/\u2028/g, "\\u2028").replace(/\u2029/g, "\\u2029") : t
  }

  function p(t, e) {
    for (var s = 0; s < t.length; s++) if (t[s] === e) return ! 0;
    return ! 1
  }

  function u(t, e, s) {
    for (var r = !! (s = s || {}).withMembers, n = null, i = 0; i < t.length; i++) {
      var o = t[i];
      o.type !== tt || p(e, o.value) ? o.type === rt && r && null !== n ? n += "." + o.value : o.type === st ? u(o.value, e, s) : null !== n && (p(e, n) || e.push(n), n = null) : r ? null !== n ? (p(e, n) || e.push(n), n = o.value) : n = o.value : e.push(o.value)
    }
    null === n || p(e, n) || e.push(n)
  }

  function c(t, e) {
    this.tokens = t, this.parser = e, this.unaryOps = e.unaryOps, this.binaryOps = e.binaryOps, this.ternaryOps = e.ternaryOps, this.functions = e.functions
  }

  function l(t, e, s) {
    this.type = t, this.value = e, this.index = s
  }

  function f(t, e) {
    this.pos = 0, this.current = null, this.unaryOps = t.unaryOps, this.binaryOps = t.binaryOps, this.ternaryOps = t.ternaryOps, this.consts = t.consts, this.expression = e, this.savedPosition = 0, this.savedCurrent = null, this.options = t.options
  }

  function v(t) {
    return ot.hasOwnProperty(t) ? ot[t] : t
  }

  function x(t, e, s) {
    this.parser = t, this.tokens = e, this.current = null, this.nextToken = null, this.next(), this.savedCurrent = null, this.savedNextToken = null, this.allowMemberAccess = ! 1 !== s.allowMemberAccess
  }

  function y(t, e) {
    return Number(t) + Number(e)
  }

  function w(t, e) {
    return t - e
  }

  function d(t, e) {
    return t * e
  }

  function M(t, e) {
    return t / e
  }

  function g(t, e) {
    return t % e
  }

  function E(t, e) {
    return "" + t + e
  }

  function k(t, e) {
    return t === e
  }

  function b(t, e) {
    return t !== e
  }

  function m(t, e) {
    return t > e
  }

  function T(t, e) {
    return t < e
  }

  function A(t, e) {
    return t >= e
  }

  function O(t, e) {
    return t <= e
  }

  function N(t, e) {
    return Boolean(t && e)
  }

  function C(t, e) {
    return Boolean(t || e)
  }

  function P(t, e) {
    return p(e, t)
  }

  function I(t) {
    return (Math.exp(t) - Math.exp(-t)) / 2
  }

  function S(t) {
    return (Math.exp(t) + Math.exp(-t)) / 2
  }

  function R(t) {
    return t === 1 / 0 ? 1 : t === -1 / 0 ? -1 : (Math.exp(t) - Math.exp(-t)) / (Math.exp(t) + Math.exp(-t))
  }

  function F(t) {
    return t === -1 / 0 ? t : Math.log(t + Math.sqrt(t * t + 1))
  }

  function L(t) {
    return Math.log(t + Math.sqrt(t * t - 1))
  }

  function U(t) {
    return Math.log((1 + t) / (1 - t)) / 2
  }

  function q(t) {
    return Math.log(t) * Math.LOG10E
  }

  function B(t) {
    return -t
  }

  function $(t) {
    return ! t
  }

  function G(t) {
    return t < 0 ? Math.ceil(t) : Math.floor(t)
  }

  function _(t) {
    return Math.random() * (t || 1)
  }

  function j(t) {
    return W(t + 1)
  }

  function J(t) {
    return isFinite(t) && t === Math.round(t)
  }

  function W(t) {
    var e, s;
    if (J(t)) {
      if (t <= 0) return isFinite(t) ? 1 / 0 : NaN;
      if (t > 171) return 1 / 0;
      for (var r = t - 2, n = t - 1; r > 1;) n *= r, r--;
      return 0 === n && (n = 1), n
    }
    if (t < .5) return Math.PI / (Math.sin(Math.PI * t) * W(1 - t));
    if (t >= 171.35) return 1 / 0;
    if (t > 85) {
      var i = t * t, o = i * t, a = o * t, h = a * t;
      return Math.sqrt(2 * Math.PI / t) * Math.pow(t / Math.E, t) * (1 + 1 / (12 * t) + 1 / (288 * i) - 139 / (51840 * o) - 571 / (2488320 * a) + 163879 / (209018880 * h) + 5246819 / (75246796800 * h * t))
    }
    --t, s = ct[0];
    for (var p = 1; p < ct.length; ++p) s += ct[p] / (t + p);
    return e = t + ut + .5, Math.sqrt(2 * Math.PI) * Math.pow(e, t + .5) * Math.exp(-e) * s
  }

  function V(t) {
    return String(t).length
  }

  function X() {
    for (var t = 0, e = 0, s = 0; s < arguments.length; s++) {
      var r, n = Math.abs(arguments[s]);
      e < n ? (t = t * (r = e / n) * r + 1, e = n) : t += n > 0 ? (r = n / e) * r : n
    }
    return e === 1 / 0 ? 1 / 0 : e * Math.sqrt(t)
  }

  function z(t, e, s) {
    return t ? e : s
  }

  function D(t, e) {
    return void 0 === e || 0 == +e ? Math.round(t) : (t = +t, e = -+e, isNaN(t) || "number" != typeof e || e % 1 != 0 ? NaN : (t = t.toString().split("e"), t = Math.round(+(t[0] + "e" + (t[1] ? +t[1] - e : -e))), +((t = t.toString().split("e"))[0] + "e" + (t[1] ? +t[1] + e : e))))
  }

  function H(t) {
    this.options = t || {}, this.unaryOps = {
      sin: Math.sin,
      cos: Math.cos,
      tan: Math.tan,
      asin: Math.asin,
      acos: Math.acos,
      atan: Math.atan,
      sinh: Math.sinh || I,
      cosh: Math.cosh || S,
      tanh: Math.tanh || R,
      asinh: Math.asinh || F,
      acosh: Math.acosh || L,
      atanh: Math.atanh || U,
      sqrt: Math.sqrt,
      log: Math.log,
      ln: Math.log,
      lg: Math.log10 || q,
      log10: Math.log10 || q,
      abs: Math.abs,
      ceil: Math.ceil,
      floor: Math.floor,
      round: Math.round,
      trunc: Math.trunc || G,
      "-": B,
      "+": Number,
      exp: Math.exp,
      not: $,
      length: V,
      "!": j
    }, this.binaryOps = {
      "+": y,
      "-": w,
      "*": d,
      "/": M,
      "%": g,
      "^": Math.pow,
      "||": E,
      "==": k,
      "!=": b,
      ">": m,
      "<": T,
      ">=": A,
      "<=": O,
      and: N,
      or: C,
      in: P
    }, this.ternaryOps = {"?": z}, this.functions = {
      random: _,
      fac: j,
      min: Math.min,
      max: Math.max,
      hypot: Math.hypot || X,
      pyt: Math.hypot || X,
      pow: Math.pow,
      atan2: Math.atan2,
      if: z,
      gamma: W,
      roundTo: D
    }, this.consts = {E: Math.E, PI: Math.PI, true: ! 0, false: ! 1}
  }

  var K = "INUMBER", Q = "IOP1", Y = "IOP2", Z = "IOP3", tt = "IVAR", et = "IFUNCALL", st = "IEXPR", rt = "IMEMBER";
  t.prototype.toString = function () {
    switch (this.type) {
      case K:
      case Q:
      case Y:
      case Z:
      case tt:
        return this.value;
      case et:
        return "CALL " + this.value;
      case rt:
        return "." + this.value;
      default:
        return "Invalid Instruction"
    }
  }, c.prototype.simplify = function (t) {
    return t = t || {}, new c(n(this.tokens, this.unaryOps, this.binaryOps, this.ternaryOps, t), this.parser)
  }, c.prototype.substitute = function (t, e) {
    return e instanceof c || (e = this.parser.parse(String(e))), new c(i(this.tokens, t, e), this.parser)
  }, c.prototype.evaluate = function (t) {
    return t = t || {}, o(this.tokens, this, t)
  }, c.prototype.toString = function () {
    return a(this.tokens, ! 1)
  }, c.prototype.symbols = function (t) {
    t = t || {};
    var e = [];
    return u(this.tokens, e, t), e
  }, c.prototype.variables = function (t) {
    t = t || {};
    var e = [];
    u(this.tokens, e, t);
    var s = this.functions;
    return e.filter(function (t) {
      return ! (t in s)
    })
  }, c.prototype.toJSFunction = function (t, e) {
    var s = this,
      r = new Function(t, "with(this.functions) with (this.ternaryOps) with (this.binaryOps) with (this.unaryOps) { return " + a(this.simplify(e).tokens, ! 0) + "; }");
    return function () {
      return r.apply(s, arguments)
    }
  };
  var nt = "TOP";
  l.prototype.toString = function () {
    return this.type + ": " + this.value
  }, f.prototype.newToken = function (t, e, s) {
    return new l(t, e, null != s ? s : this.pos)
  }, f.prototype.save = function () {
    this.savedPosition = this.pos, this.savedCurrent = this.current
  }, f.prototype.restore = function () {
    this.pos = this.savedPosition, this.current = this.savedCurrent
  }, f.prototype.next = function () {
    return this.pos >= this.expression.length ? this.newToken("TEOF", "EOF") : this.isWhitespace() || this.isComment() ? this.next() : this.isRadixInteger() || this.isNumber() || this.isOperator() || this.isString() || this.isParen() || this.isComma() || this.isNamedOp() || this.isConst() || this.isName() ? this.current : void this.parseError('Unknown character "' + this.expression.charAt(this.pos) + '"')
  }, f.prototype.isString = function () {
    var t = ! 1, e = this.pos, s = this.expression.charAt(e);
    if ("'" === s || '"' === s) for (var r = this.expression.indexOf(s, e + 1); r >= 0 && this.pos < this.expression.length;) {
      if (this.pos = r + 1, "\\" !== this.expression.charAt(r - 1)) {
        var n = this.expression.substring(e + 1, r);
        this.current = this.newToken("TSTRING", this.unescape(n), e), t = ! 0;
        break
      }
      r = this.expression.indexOf(s, r + 1)
    }
    return t
  }, f.prototype.isParen = function () {
    var t = this.expression.charAt(this.pos);
    return ("(" === t || ")" === t) && (this.current = this.newToken("TPAREN", t), this.pos++, ! 0)
  }, f.prototype.isComma = function () {
    return "," === this.expression.charAt(this.pos) && (this.current = this.newToken("TCOMMA", ","), this.pos++, ! 0)
  }, f.prototype.isConst = function () {
    for (var t = this.pos, e = t; e < this.expression.length; e++) {
      var s = this.expression.charAt(e);
      if (s.toUpperCase() === s.toLowerCase() && (e === this.pos || "_" !== s && "." !== s && (s < "0" || s > "9"))) break
    }
    if (e > t) {
      var r = this.expression.substring(t, e);
      if (r in this.consts) return this.current = this.newToken("TNUMBER", this.consts[r]), this.pos += r.length, ! 0
    }
    return ! 1
  }, f.prototype.isNamedOp = function () {
    for (var t = this.pos, e = t; e < this.expression.length; e++) {
      var s = this.expression.charAt(e);
      if (s.toUpperCase() === s.toLowerCase() && (e === this.pos || "_" !== s && (s < "0" || s > "9"))) break
    }
    if (e > t) {
      var r = this.expression.substring(t, e);
      if (this.isOperatorEnabled(r) && (r in this.binaryOps || r in this.unaryOps || r in this.ternaryOps)) return this.current = this.newToken(nt, r), this.pos += r.length, ! 0
    }
    return ! 1
  }, f.prototype.isName = function () {
    for (var t = this.pos, e = t, s = ! 1; e < this.expression.length; e++) {
      var r = this.expression.charAt(e);
      if (r.toUpperCase() === r.toLowerCase()) {
        if (e === this.pos && "$" === r) continue;
        if (e === this.pos || ! s || "_" !== r && (r < "0" || r > "9")) break
      } else s = ! 0
    }
    if (s) {
      var n = this.expression.substring(t, e);
      return this.current = this.newToken("TNAME", n), this.pos += n.length, ! 0
    }
    return ! 1
  }, f.prototype.isWhitespace = function () {
    for (var t = ! 1, e = this.expression.charAt(this.pos); ! (" " !== e && "\t" !== e && "\n" !== e && "\r" !== e || (t = ! 0, ++this.pos >= this.expression.length));) e = this.expression.charAt(this.pos);
    return t
  };
  var it = /^[0-9a-f]{4}$/i;
  f.prototype.unescape = function (t) {
    var e = t.indexOf("\\");
    if (e < 0) return t;
    for (var s = t.substring(0, e); e >= 0;) {
      var r = t.charAt(++e);
      switch (r) {
        case"'":
          s += "'";
          break;
        case'"':
          s += '"';
          break;
        case"\\":
          s += "\\";
          break;
        case"/":
          s += "/";
          break;
        case"b":
          s += "\b";
          break;
        case"f":
          s += "\f";
          break;
        case"n":
          s += "\n";
          break;
        case"r":
          s += "\r";
          break;
        case"t":
          s += "\t";
          break;
        case"u":
          var n = t.substring(e + 1, e + 5);
          it.test(n) || this.parseError("Illegal escape sequence: \\u" + n), s += String.fromCharCode(parseInt(n, 16)), e += 4;
          break;
        default:
          throw this.parseError('Illegal escape sequence: "\\' + r + '"')
      }
      ++e;
      var i = t.indexOf("\\", e);
      s += t.substring(e, i < 0 ? t.length : i), e = i
    }
    return s
  }, f.prototype.isComment = function () {
    return "/" === this.expression.charAt(this.pos) && "*" === this.expression.charAt(this.pos + 1) && (this.pos = this.expression.indexOf("*/", this.pos) + 2, 1 === this.pos && (this.pos = this.expression.length), ! 0)
  }, f.prototype.isRadixInteger = function () {
    var t = this.pos;
    if (t >= this.expression.length - 2 || "0" !== this.expression.charAt(t)) return ! 1;
    ++t;
    var e, s;
    if ("x" === this.expression.charAt(t)) e = 16, s = /^[0-9a-f]$/i, ++t; else {
      if ("b" !== this.expression.charAt(t)) return ! 1;
      e = 2, s = /^[01]$/i, ++t
    }
    for (var r = ! 1, n = t; t < this.expression.length;) {
      var i = this.expression.charAt(t);
      if ( ! s.test(i)) break;
      t++, r = ! 0
    }
    return r && (this.current = this.newToken("TNUMBER", parseInt(this.expression.substring(n, t), e)), this.pos = t), r
  }, f.prototype.isNumber = function () {
    for (var t, e = ! 1, s = this.pos, r = s, n = s, i = ! 1, o = ! 1; s < this.expression.length && ((t = this.expression.charAt(s)) >= "0" && t <= "9" || ! i && "." === t);) "." === t ? i = ! 0 : o = ! 0, s++, e = o;
    if (e && (n = s), "e" === t || "E" === t) {
      s++;
      for (var a = ! 0, h = ! 1; s < this.expression.length;) {
        if (t = this.expression.charAt(s), ! a || "+" !== t && "-" !== t) {
          if ( ! (t >= "0" && t <= "9")) break;
          h = ! 0, a = ! 1
        } else a = ! 1;
        s++
      }
      h || (s = n)
    }
    return e ? (this.current = this.newToken("TNUMBER", parseFloat(this.expression.substring(r, s))), this.pos = s) : this.pos = n, e
  }, f.prototype.isOperator = function () {
    var t = this.pos, e = this.expression.charAt(this.pos);
    if ("+" === e || "-" === e || "*" === e || "/" === e || "%" === e || "^" === e || "?" === e || ":" === e || "." === e) this.current = this.newToken(nt, e); else if ("∙" === e || "•" === e) this.current = this.newToken(nt, "*"); else if (">" === e) "=" === this.expression.charAt(this.pos + 1) ? (this.current = this.newToken(nt, ">="), this.pos++) : this.current = this.newToken(nt, ">"); else if ("<" === e) "=" === this.expression.charAt(this.pos + 1) ? (this.current = this.newToken(nt, "<="), this.pos++) : this.current = this.newToken(nt, "<"); else if ("|" === e) {
      if ("|" !== this.expression.charAt(this.pos + 1)) return ! 1;
      this.current = this.newToken(nt, "||"), this.pos++
    } else if ("=" === e) {
      if ("=" !== this.expression.charAt(this.pos + 1)) return ! 1;
      this.current = this.newToken(nt, "=="), this.pos++
    } else {
      if ("!" !== e) return ! 1;
      "=" === this.expression.charAt(this.pos + 1) ? (this.current = this.newToken(nt, "!="), this.pos++) : this.current = this.newToken(nt, e)
    }
    return this.pos++, !! this.isOperatorEnabled(this.current.value) || (this.pos = t, ! 1)
  };
  var ot = {
    "+": "add",
    "-": "subtract",
    "*": "multiply",
    "/": "divide",
    "%": "remainder",
    "^": "power",
    "!": "factorial",
    "<": "comparison",
    ">": "comparison",
    "<=": "comparison",
    ">=": "comparison",
    "==": "comparison",
    "!=": "comparison",
    "||": "concatenate",
    and: "logical",
    or: "logical",
    not: "logical",
    "?": "conditional",
    ":": "conditional"
  };
  f.prototype.isOperatorEnabled = function (t) {
    var e = v(t), s = this.options.operators || {};
    return "in" === e ? !! s.in : ! (e in s && ! s[e])
  }, f.prototype.getCoordinates = function () {
    var t, e = 0, s = -1;
    do {
      e++, t = this.pos - s, s = this.expression.indexOf("\n", s + 1)
    } while (s >= 0 && s < this.pos);
    return {line: e, column: t}
  }, f.prototype.parseError = function (t) {
    var e = this.getCoordinates();
    throw new Error("parse error [" + e.line + ":" + e.column + "]: " + t)
  }, x.prototype.next = function () {
    return this.current = this.nextToken, this.nextToken = this.tokens.next()
  }, x.prototype.tokenMatches = function (t, e) {
    return void 0 === e || (Array.isArray(e) ? p(e, t.value) : "function" == typeof e ? e(t) : t.value === e)
  }, x.prototype.save = function () {
    this.savedCurrent = this.current, this.savedNextToken = this.nextToken, this.tokens.save()
  }, x.prototype.restore = function () {
    this.tokens.restore(), this.current = this.savedCurrent, this.nextToken = this.savedNextToken
  }, x.prototype.accept = function (t, e) {
    return ! (this.nextToken.type !== t || ! this.tokenMatches(this.nextToken, e)) && (this.next(), ! 0)
  }, x.prototype.expect = function (t, e) {
    if ( ! this.accept(t, e)) {
      var s = this.tokens.getCoordinates();
      throw new Error("parse error [" + s.line + ":" + s.column + "]: Expected " + (e || t))
    }
  }, x.prototype.parseAtom = function (e) {
    if (this.accept("TNAME")) e.push(new t(tt, this.current.value)); else if (this.accept("TNUMBER")) e.push(new t(K, this.current.value)); else if (this.accept("TSTRING")) e.push(new t(K, this.current.value)); else {
      if ( ! this.accept("TPAREN", "(")) throw new Error("unexpected " + this.nextToken);
      this.parseExpression(e), this.expect("TPAREN", ")")
    }
  }, x.prototype.parseExpression = function (t) {
    this.parseConditionalExpression(t)
  }, x.prototype.parseConditionalExpression = function (e) {
    for (this.parseOrExpression(e); this.accept(nt, "?");) {
      var s = [], n = [];
      this.parseConditionalExpression(s), this.expect(nt, ":"), this.parseConditionalExpression(n), e.push(new t(st, s)), e.push(new t(st, n)), e.push(r("?"))
    }
  }, x.prototype.parseOrExpression = function (t) {
    for (this.parseAndExpression(t); this.accept(nt, "or");) this.parseAndExpression(t), t.push(s("or"))
  }, x.prototype.parseAndExpression = function (t) {
    for (this.parseComparison(t); this.accept(nt, "and");) this.parseComparison(t), t.push(s("and"))
  };
  var at = ["==", "!=", "<", "<=", ">=", ">", "in"];
  x.prototype.parseComparison = function (t) {
    for (this.parseAddSub(t); this.accept(nt, at);) {
      var e = this.current;
      this.parseAddSub(t), t.push(s(e.value))
    }
  };
  var ht = ["+", "-", "||"];
  x.prototype.parseAddSub = function (t) {
    for (this.parseTerm(t); this.accept(nt, ht);) {
      var e = this.current;
      this.parseTerm(t), t.push(s(e.value))
    }
  };
  var pt = ["*", "/", "%"];
  x.prototype.parseTerm = function (t) {
    for (this.parseFactor(t); this.accept(nt, pt);) {
      var e = this.current;
      this.parseFactor(t), t.push(s(e.value))
    }
  }, x.prototype.parseFactor = function (t) {
    var s = this.tokens.unaryOps;
    if (this.save(), this.accept(nt, function (t) {
      return t.value in s
    })) if ("-" !== this.current.value && "+" !== this.current.value && "TPAREN" === this.nextToken.type && "(" === this.nextToken.value) this.restore(), this.parseExponential(t); else {
      var r = this.current;
      this.parseFactor(t), t.push(e(r.value))
    } else this.parseExponential(t)
  }, x.prototype.parseExponential = function (t) {
    for (this.parsePostfixExpression(t); this.accept(nt, "^");) this.parseFactor(t), t.push(s("^"))
  }, x.prototype.parsePostfixExpression = function (t) {
    for (this.parseFunctionCall(t); this.accept(nt, "!");) t.push(e("!"))
  }, x.prototype.parseFunctionCall = function (s) {
    var r = this.tokens.unaryOps;
    if (this.accept(nt, function (t) {
      return t.value in r
    })) {
      var n = this.current;
      this.parseAtom(s), s.push(e(n.value))
    } else for (this.parseMemberExpression(s); this.accept("TPAREN", "(");) if (this.accept("TPAREN", ")")) s.push(new t(et, 0)); else {
      var i = this.parseArgumentList(s);
      s.push(new t(et, i))
    }
  }, x.prototype.parseArgumentList = function (t) {
    for (var e = 0; ! this.accept("TPAREN", ")");) for (this.parseExpression(t), ++e; this.accept("TCOMMA");) this.parseExpression(t), ++e;
    return e
  }, x.prototype.parseMemberExpression = function (e) {
    for (this.parseAtom(e); this.accept(nt, ".");) {
      if ( ! this.allowMemberAccess) throw new Error('unexpected ".", member access is not permitted');
      this.expect("TNAME"), e.push(new t(rt, this.current.value))
    }
  };
  var ut = 4.7421875,
    ct = [.9999999999999971, 57.15623566586292, -59.59796035547549, 14.136097974741746, -.4919138160976202, 3399464998481189e-20, 4652362892704858e-20, -9837447530487956e-20, .0001580887032249125, -.00021026444172410488, .00021743961811521265, -.0001643181065367639, 8441822398385275e-20, -26190838401581408e-21, 36899182659531625e-22];
  H.prototype.parse = function (t) {
    var e = [], s = new x(this, new f(this, t), {allowMemberAccess: this.options.allowMemberAccess});
    return s.parseExpression(e), s.expect("TEOF", "EOF"), new c(e, this)
  }, H.prototype.evaluate = function (t, e) {
    return this.parse(t).evaluate(e)
  };
  var lt = new H;
  return H.parse = function (t) {
    return lt.parse(t)
  }, H.evaluate = function (t, e) {
    return lt.parse(t).evaluate(e)
  }, {Parser: H, Expression: c}
});