tomlplusplus/examples/error_printer.cpp

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// This file is a part of toml++ and is subject to the the terms of the MIT license.
2021-01-02 15:48:47 +00:00
// Copyright (c) Mark Gillard <mark.gillard@outlook.com.au>
// See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
// SPDX-License-Identifier: MIT
/*
This example is one of diagnostics; it forces a set of specific parsing
failures and prints their error messages to stdout so you can see what the
default error messages look like.
*/
#include <iostream>
#include "utf8_console.h"
#define TOML_EXCEPTIONS 0
#define TOML_UNRELEASED_FEATURES 0
#include <toml++/toml.h>
using namespace std::string_view_literals;
using toml::operator""_sz;
namespace
{
inline constexpr std::string_view invalid_parses[] =
{
"########## comments"sv,
"# bar\rkek"sv,
"# bar\bkek"sv,
"# \xf1\x63"sv,
"########## inline tables"sv,
"val = {,}"sv,
"val = {a='b',}"sv, // allowed when TOML_UNRELEASED_FEATURES == 1
"val = {a='b',,}"sv,
"val = {a='b',"sv,
"val = {a='b',\n c='d'}"sv, // allowed when TOML_UNRELEASED_FEATURES == 1
"val = {?='b'}"sv,
"########## tables"sv,
"[]"sv,
"[foo"sv,
"[foo] ?"sv,
"[foo] [bar]"sv,
"[foo]\n[foo]"sv,
"? = 'foo' ?"sv,
"[ [foo] ]"sv
"########## arrays"sv,
"val = [,]"sv,
"val = ['a',,]"sv,
"val = ['a',"sv,
"########## key-value pairs"sv,
"val = 'foo' ?"sv,
"val = "sv,
"val "sv,
"val ?"sv,
"val = ]"sv,
"[foo]\nbar = 'kek'\nbar = 'kek2'"sv,
"[foo]\nbar = 'kek'\nbar = 7"sv,
"[foo.bar]\n[foo]\nbar = 'kek'"sv,
"[foo]\nbar = 'kek'\nbar.kek = 7"sv,
"[foo]\nbar.? = 'kek'"sv,
R"('''val''' = 1)"sv,
R"(a."""val""" = 1)"sv,
2020-10-09 21:30:12 +00:00
"1= 0x6cA#+\xf1"sv,
"########## values"sv,
"val = _"sv,
"val = G"sv,
"########## strings"sv,
"val = \" \r \""sv,
R"(val = ")"sv,
R"(val = "\g")"sv,
R"(val = "\x20")"sv, // allowed when TOML_UNRELEASED_FEATURES == 1
R"(val = "\uFFF")"sv,
R"(val = "\uFFFG")"sv,
R"(val = "\UFFFFFFF")"sv,
R"(val = "\UFFFFFGF")"sv,
R"(val = "\uD801")"sv,
R"(val = "\U00110000")"sv,
R"(val = """ """""")"sv,
R"(val = ''' '''''')"sv,
"val = '\n'"sv,
"########## integers"sv,
R"(val = -0b0)"sv,
R"(val = -0o0)"sv,
R"(val = -0x0)"sv,
R"(val = +0b0)"sv,
R"(val = +0o0)"sv,
R"(val = +0x0)"sv,
R"(val = 1-)"sv,
R"(val = -1+)"sv,
R"(val = -+1)"sv,
R"(val = 1_0_)"sv,
R"(val = 1_0_ )"sv,
R"(val = 999999999999999999999999999999999999 )"sv,
R"(val = 9223372036854775808 )"sv,
R"(val = 01 )"sv,
"########## floats"sv,
R"(val = 9999999999999999999999999999999999999999999999999999999999999995.0)"sv,
};
}
int main(int /*argc*/, char** /*argv*/)
{
std::ios_base::sync_with_stdio(false);
init_utf8_console();
for (auto str : invalid_parses)
{
if (str.empty())
continue;
if (str.substr(0_sz, 10_sz) == "##########"sv)
{
const auto substr = str.substr(11_sz);
size_t cols = 80_sz;
for (size_t i = (cols - substr.length()) / 2_sz - 1_sz; i-- > 0_sz; )
{
std::cout.put('#');
cols--;
}
std::cout.put(' ');
std::cout << substr;
std::cout.put(' ');
cols -= substr.length() + 2_sz;
while (cols--)
std::cout.put('#');
std::cout << "\n\n"sv;
}
else
{
auto result = toml::parse(str);
if (!result)
{
std::cout << result.error();
std::cout << "\n\n"sv;
}
}
}
return 0;
}