boolean-expressions/dist/booleanExpressions.js

Boolean expression parser and evaluator. Makes use of the Ohm grammar package with grammar rules found [here](https://github.com/avadavat/boolean-expressions/blob/master/src/grammar/grammarRules.ts).

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var ohm_js_1 = require("ohm-js");
var grammar_1 = require("./grammar");
var util_1 = require("./util");
var evaluator_1 = require("./evaluator");
var BooleanExpressions = /** @class */ (function () {
    function BooleanExpressions(exp) {
        var truthGrammar = ohm_js_1.grammar(grammar_1.grammarRules);
        var matchResult = truthGrammar.match(exp);
        if (matchResult.failed()) {
            throw new Error("Parse failed " + matchResult.shortMessage);
        }
        this.variableNames = util_1.extractVariables(exp);
        this.evaluateFunc = evaluator_1.createSemantics(truthGrammar, matchResult);
    }
    /**
     * Returns a list of all the unique variable names in the boolean expression.
     */
    BooleanExpressions.prototype.getVariableNames = function () {
        return this.variableNames;
    };
    /**
     * Evaluates the given boolean expression with the given variables set to true
     * and the omitted variables set to false.
     */
    BooleanExpressions.prototype.evaluate = function (variables) {
        return this.evaluateFunc(variables);
    };
    return BooleanExpressions;
}());
exports.default = BooleanExpressions;