mirror of
https://github.com/josdejong/mathjs.git
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59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
'use strict';
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function factory (type, config, load, typed, math) {
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var Parser = load(require('../Parser'));
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/**
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* Create a parser. The function creates a new `math.expression.Parser` object.
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*
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* Syntax:
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*
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* math.parser()
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*
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* Examples:
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*
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* var parser = new math.parser();
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*
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* // evaluate expressions
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* var a = parser.eval('sqrt(3^2 + 4^2)'); // 5
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* var b = parser.eval('sqrt(-4)'); // 2i
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* var c = parser.eval('2 inch in cm'); // 5.08 cm
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* var d = parser.eval('cos(45 deg)'); // 0.7071067811865476
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*
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* // define variables and functions
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* parser.eval('x = 7 / 2'); // 3.5
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* parser.eval('x + 3'); // 6.5
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* parser.eval('function f(x, y) = x^y'); // f(x, y)
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* parser.eval('f(2, 3)'); // 8
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*
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* // get and set variables and functions
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* var x = parser.get('x'); // 7
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* var f = parser.get('f'); // function
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* var g = f(3, 2); // 9
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* parser.set('h', 500);
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* var i = parser.eval('h / 2'); // 250
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* parser.set('hello', function (name) {
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* return 'hello, ' + name + '!';
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* });
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* parser.eval('hello("user")'); // "hello, user!"
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*
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* // clear defined functions and variables
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* parser.clear();
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*
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* See also:
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*
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* eval, compile, parse
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*
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* @return {Parser} Parser
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*/
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return typed('parser', {
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'': function () {
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return new Parser(math);
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}
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});
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}
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exports.name = 'parser';
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exports.factory = factory;
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exports.math = true; // requires the math namespace as 5th argument
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