fp-ts-routing
Version:
A type-safe routing library for TypeScript
203 lines • 5.22 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.then = exports.map = exports.flatten = exports.chainFirst = exports.chain = exports.apSecond = exports.apFirst = exports.ap = exports.alt = exports.parser = exports.getParserMonoid = exports.parse = exports.zero = exports.Parser = void 0;
var function_1 = require("fp-ts/lib/function");
var O = require("fp-ts/lib/Option");
// This `pipe` version is deprecated, but provided by `fp-ts` v2.0.1 and higher.
var pipeable_1 = require("fp-ts/lib/pipeable");
var PARSER_URI = 'fp-ts-routing/Parser';
/**
* @category parsers
* @since 0.4.0
*/
var Parser = /** @class */ (function () {
function Parser(run) {
this.run = run;
}
/**
* @since 0.4.0
*/
Parser.of = function (a) {
return new Parser(function (s) { return O.some([a, s]); });
};
/**
* @since 0.4.0
*/
Parser.prototype.map = function (f) {
return this.chain(function (a) { return Parser.of(f(a)); }); // <= derived
};
/**
* @since 0.4.0
*/
Parser.prototype.ap = function (fab) {
var _this = this;
return fab.chain(function (f) { return _this.map(f); }); // <= derived
};
/**
* @since 0.4.0
*/
Parser.prototype.chain = function (f) {
var _this = this;
return new Parser(function (r) {
return (0, pipeable_1.pipe)(_this.run(r), O.chain(function (_a) {
var a = _a[0], r2 = _a[1];
return f(a).run(r2);
}));
});
};
/**
* @since 0.4.0
*/
Parser.prototype.alt = function (that) {
var _this = this;
return new Parser(function (r) {
return (0, pipeable_1.pipe)(_this.run(r), O.alt(function () { return that.run(r); }));
});
};
/**
* @since 0.4.0
*/
Parser.prototype.then = function (that) {
return that.ap(this.map(assign));
};
return Parser;
}());
exports.Parser = Parser;
/**
* @category parsers
* @since 0.4.0
*/
var zero = function () { return new Parser(function () { return O.none; }); };
exports.zero = zero;
/**
* @category parsers
* @since 0.4.0
*/
var parse = function (parser, r, a) {
return (0, pipeable_1.pipe)(parser.run(r), O.fold(function () { return a; }, function (_a) {
var x = _a[0];
return x;
}));
};
exports.parse = parse;
/**
* @category parsers
* @since 0.5.1
*/
var getParserMonoid = function () { return ({
concat: function (x, y) { return x.alt(y); },
empty: (0, exports.zero)()
}); };
exports.getParserMonoid = getParserMonoid;
/**
* @category parsers
* @since 0.5.1
*/
exports.parser = {
URI: PARSER_URI,
map: function (ma, f) { return ma.map(f); },
of: Parser.of,
ap: function (mab, ma) { return ma.ap(mab); },
chain: function (ma, f) { return ma.chain(f); },
alt: function (fx, f) {
return new Parser(function (r) {
return (0, pipeable_1.pipe)(fx.run(r), O.alt(function () { return f().run(r); }));
});
},
zero: exports.zero
};
/**
* @category parsers
* @since 0.5.1
*/
var alt = function (that) {
return function (fa) {
return exports.parser.alt(fa, that);
};
};
exports.alt = alt;
/**
* @category parsers
* @since 0.5.1
*/
var ap = function (fa) {
return function (fab) {
return exports.parser.ap(fab, fa);
};
};
exports.ap = ap;
// taken from fp-ts 2.0.1 https://github.com/gcanti/fp-ts/blob/2.0.1/src/pipeable.ts#L1028
/**
* @category parsers
* @since 0.5.1
*/
var apFirst = function (fb) {
return function (fa) {
return exports.parser.ap(exports.parser.map(fa, function (a) { return function () { return a; }; }), fb);
};
};
exports.apFirst = apFirst;
// taken from fp-ts 2.0.1 https://github.com/gcanti/fp-ts/blob/2.0.1/src/pipeable.ts#L1031
/**
* @category parsers
* @since 0.5.1
*/
var apSecond = function (fb) {
return function (fa) {
return exports.parser.ap(exports.parser.map(fa, function () { return function (b) { return b; }; }), fb);
};
};
exports.apSecond = apSecond;
/**
* @category parsers
* @since 0.5.1
*/
var chain = function (f) {
return function (ma) {
return exports.parser.chain(ma, f);
};
};
exports.chain = chain;
/**
* @category parsers
* @since 0.5.1
*/
var chainFirst = function (f) {
return function (ma) {
return exports.parser.chain(ma, function (a) { return exports.parser.map(f(a), function () { return a; }); });
};
};
exports.chainFirst = chainFirst;
/**
* @category parsers
* @since 0.5.1
*/
var flatten = function (mma) { return exports.parser.chain(mma, function_1.identity); };
exports.flatten = flatten;
/**
* @category parsers
* @since 0.5.1
*/
var map = function (f) {
return function (fa) {
return exports.parser.map(fa, f);
};
};
exports.map = map;
/**
* @category parsers
* @since 0.6.0
*/
var then = function (fb) {
return function (fa) {
return fa.then(fb);
};
};
exports.then = then;
// --- Helpers
var assign = function (a) {
return function (b) {
return Object.assign({}, a, b);
};
};
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