evalogic

A library to evaluate simple logical expression using only these three
logical operators: _& (and)_, _| (or)_, and _! (not)_.

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##### Install
``bash
npm install --save evalogic
`

##### Import the evaluate function
`javascript
import { evaluate } from 'evalogic';
`

Evaluating Expression

##### Single value
`javascript
evaluate('0'); // false
evaluate('1'); // true
`

##### OR expression
`javascript
evaluate('0|0'); // false
evaluate('1|0'); // true
evaluate('1|1'); // true
evaluate('1|1|0'); // true
`

##### AND expression
`javascript
evaluate('0&0'); // false
evaluate('1&0'); // false
evaluate('1&1'); // true
evaluate('1&1&0'); // false
`

##### NOT expression
`javascript
evaluate('!0'); // true
evaluate('!1'); // false
`

##### Expression with parenthesis
`javascript
evaluate('(0)'); // false
evaluate('(!0)'); // true
evaluate('(0)&(1)'); // false
evaluate('(0|1)&(!1)'); // false
evaluate('((1&1)&(1&0))&(1|0)'); // false
`

##### Invalid expression
`javascript
evaluate('(0|0'); // throws Error: Invalid logical expression
evaluate(')0|0('); // throws Error: Invalid logical expression
evaluate('&0&0'); // throws Error: Invalid logical expression
evaluate('0&&0'); // throws Error: Invalid logical expression
evaluate('(0)(1)'); // throws Error: Invalid logical expression
`

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##### Tests
`
npm test
``

$3

MIT