@masala/parser/build/test/stream/offset-test.js

Masala Parser

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _index = require('../../lib/stream/index');

var _index2 = _interopRequireDefault(_index);

var _parsec = require('../../lib/parsec');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

;
exports.default = {
    setUp: function setUp(done) {
        done();
    },

    'response ok with a StringStream': function responseOkWithAStringStream(test) {

        var stream = _index2.default.ofString('The world is a vampire');

        var parser = _parsec.C.string('The');
        var response = parser.parse(stream, 0);

        test.ok(response.isAccepted());
        test.ok(!response.isEos());
        test.equal(response.offset, 3);

        test.done();
    },

    'response ok inside a StringStream': function responseOkInsideAStringStream(test) {

        var stream = _index2.default.ofString('The world is a vampire');

        var parser = _parsec.C.string('world');
        var response = parser.parse(stream, 4);

        test.ok(response.isAccepted());
        test.ok(!response.isEos());
        test.equal(response.offset, 9);

        test.done();
    },

    'response ok completing a StringStream': function responseOkCompletingAStringStream(test) {

        var stream = _index2.default.ofString('The world is a vampire');

        var parser = _parsec.C.letter().or(_parsec.C.char(' ')).rep();
        var response = parser.parse(stream);

        test.ok(response.isAccepted());
        test.ok(response.isEos());
        test.equal(response.offset, 22);

        test.done();
    },

    'response fails at StringStream start': function responseFailsAtStringStreamStart(test) {

        var stream = _index2.default.ofString('The world is a vampire');

        var parser = _parsec.C.string('That');
        var response = parser.parse(stream);

        test.ok(!response.isAccepted());
        test.equal(response.offset, 0);

        test.done();
    },

    'response fails inside a StringStream': function responseFailsInsideAStringStream(test) {

        var stream = _index2.default.ofString('abc de');

        var parser = _parsec.C.string('abc').then(_parsec.C.string('fails'));
        var response = parser.parse(stream);

        test.ok(!response.isAccepted());
        test.equal(response.offset, 3);

        test.done();
    },

    'response passes the StringStream': function responsePassesTheStringStream(test) {

        var stream = _index2.default.ofString('abc de');

        var parser = _parsec.C.letter().or(_parsec.C.char(' ')).rep().then(_parsec.C.string('!!!'));
        var response = parser.parse(stream);

        test.ok(!response.isAccepted());

        // because an error has NEVER stream consumed
        test.ok(!response.isEos());
        test.equal(response.offset, stream.source.length);

        test.done();
    },

    'response with a failed try is rejected, and offset is 0': function responseWithAFailedTryIsRejectedAndOffsetIs0(test) {
        var stream = _index2.default.ofString('abc de');

        var parser = _parsec.F.try(_parsec.C.string('abc').then(_parsec.C.char('x'))).or(_parsec.C.string('x'));
        var response = parser.parse(stream);

        test.ok(!response.isAccepted());
        test.equal(response.offset, 0);

        test.done();
    }

};
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