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add parse() function

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This commit is contained in:
ToruNiina
2017-05-12 20:49:47 +09:00
parent 8abb918bd8
commit 1c26ffe3ae
2 changed files with 142 additions and 5 deletions
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40
toml/parser.hpp
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@@ -4,6 +4,7 @@
#include "acceptor.hpp"
#include <algorithm>
#include <iostream>
#include <fstream>
namespace toml
{
@@ -329,7 +330,15 @@ struct parse_float
string_type result; result.resize(std::distance(iter, end));
std::copy_if(iter, end, result.begin(), [](value_type c){return c != '_';});
return std::make_pair(std::stod(result), end);
try{
return std::make_pair(std::stod(result), end);
}
catch(std::out_of_range& oor)
{
std::cout << "extremely large Float value appeared: "
<< result << "; it is negrected" << std::endl;
return std::make_pair(0, end);
}
}
};
@@ -929,7 +938,7 @@ struct parse_data
if(iter == std::prev(end))
{
if(data.count(*iter) == 1)
throw syntax_error("duplicate key");
throw syntax_error("duplicate key: " + *iter);
data.emplace(*iter, std::move(v));
return;
}
@@ -937,7 +946,7 @@ struct parse_data
if(data.count(*iter) == 0)
data.emplace(*iter, toml::Table());
else if(data[*iter].type() != value_t::Table)
throw syntax_error("duplicate key");
throw syntax_error("duplicate key: " + *iter);
return push_table(data[*iter].template cast<value_t::Table>(),
std::move(v), std::next(iter), end);
@@ -955,7 +964,7 @@ struct parse_data
if(data.count(*iter) == 0)
data.emplace(*iter, toml::Array());
else if(data.at(*iter).type() != value_t::Array)
throw syntax_error("duplicate key");
throw syntax_error("duplicate key: " + *iter);
data[*iter].template cast<value_t::Array>().emplace_back(std::move(v));
return;
@@ -964,7 +973,7 @@ struct parse_data
if(data.count(*iter) == 0)
data.emplace(*iter, toml::Table());
else if(data[*iter].type() != value_t::Table)
throw syntax_error("duplicate key");
throw syntax_error("duplicate key: " + *iter);
return push_array_of_table(data[*iter].template cast<value_t::Table>(),
std::move(v), std::next(iter), end);
@@ -972,5 +981,26 @@ struct parse_data
};
template<typename traits = std::char_traits<toml::charactor>>
toml::Table parse(std::basic_istream<toml::charactor, traits>& is)
{
const auto initial = is.tellg();
is.seekg(0, std::ios::end);
const auto eofpos = is.tellg();
const std::size_t size = eofpos - initial;
is.seekg(initial);
std::vector<toml::charactor> contents(size);
is.read(contents.data(), size);
return parse_data::invoke(contents.cbegin(), contents.cend());
}
toml::Table parse(const std::string& filename)
{
std::ifstream ifs(filename);
if(!ifs.good()) throw std::runtime_error("file open error: " + filename);
return parse(ifs);
}
}// toml
#endif// TOML11_PARSER