Function main

sample/parse_expr.cpp:105–135

TEParser<int> const expr = toTEParser || (term <chainl1> addOp);

int main()
{
    {
        auto const rawResult = apply || many | digit || " 1  2 34";
        auto const& result = std::get<0>(rawResult.at(0));
        auto const expected = std::vector{1, 2, 3, 4};
        expectTrue(std::equal(result.begin(), result.end(), expected.begin()));
    }

    {
        auto const result = apply || addOp || " +  * /-";
        expectEq(std::get<0>(result.at(0))| 1 | 2, 3);

        auto const result2 = apply || mulOp || "   * /-";
        expectEq(std::get<0>(result2.at(0))| 1 | 2, 2);
    }

    {
        auto const p = digit <chainl1> addOp;
        auto const result = runParser | p | "1 + 2";
        auto const expected = 3;
        expectEq(std::get<0>(result.at(0)), expected);
    }

    {
        auto const result = apply | expr | "1 - 2 * 3 + 4";
        auto const expected = -1;
        expectEq(std::get<0>(result.at(0)), expected);
    }
    return 0;
}