parser-combinator
Version:
Parser combinators
73 lines (56 loc) • 5.77 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /*
* Parsec
* https://github.com/d-plaindoux/parsec
*
* Copyright (c) 2016 Didier Plaindoux
* Licensed under the LGPL2 license.
*/
var _try = require('../data/try');
var _try2 = _interopRequireDefault(_try);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Stream = function () {
function Stream() {
_classCallCheck(this, Stream);
}
// Stream 'a => number -> number
_createClass(Stream, [{
key: 'location',
value: function location(index) {
return index;
}
// Stream 'a => number -> Try 'a
}, {
key: 'get',
value: function get(index) {
try {
if (this.endOfStream(index)) {
return _try2.default.failure(new Error('End of stream reached'));
} else {
return _try2.default.success(this.unsafeGet(index));
}
} catch (e) {
return _try2.default.failure(e);
}
}
// Stream 'a => [Comparable 'a] -> number -> boolean
}, {
key: 'subStreamAt',
value: function subStreamAt(s, index) {
for (var i = 0; i < s.length; i++) {
var value = this.get(i + index);
if (!value.isSuccess() || value.success() !== s[i]) {
return false;
}
}
return true;
}
}]);
return Stream;
}();
exports.default = Stream;
//# sourceMappingURL=stream.js.map