lib/json
1
0
Fork 0
mirror of https://github.com/nlohmann/json.git synced 2025-07-31 10:24:23 +03:00
Code Activity

♿ added line positions to error messages

Browse Source 
This is a follow-up to #1210.
This commit is contained in:
Niels Lohmann
2018-10-07 12:27:24 +02:00
parent ac38e95780
commit 011b15dd08
13 changed files with 725 additions and 278 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
include/nlohmann/detail/exceptions.hpp
View File

@ -4,6 +4,8 @@
#include <stdexcept> // runtime_error
#include <string> // to_string
#include <nlohmann/detail/input/position_t.hpp>
namespace nlohmann
{
namespace detail
@ -114,15 +116,23 @@ class parse_error : public exception
/*!
@brief create a parse error exception
@param[in] id_ the id of the exception
@param[in] byte_ the byte index where the error occurred (or 0 if the
position cannot be determined)
@param[in] position the position where the error occurred (or with
chars_read_total=0 if the position cannot be
determined)
@param[in] what_arg the explanatory string
@return parse_error object
*/
static parse_error create(int id_, const position_t& pos, const std::string& what_arg)
{
std::string w = exception::name("parse_error", id_) + "parse error" +
position_string(pos) + ": " + what_arg;
return parse_error(id_, pos.chars_read_total, w.c_str());
}
static parse_error create(int id_, std::size_t byte_, const std::string& what_arg)
{
std::string w = exception::name("parse_error", id_) + "parse error" +
(byte_ != 0 ? (" at " + std::to_string(byte_)) : "") +
(byte_ != 0 ? (" at byte " + std::to_string(byte_)) : "") +
": " + what_arg;
return parse_error(id_, byte_, w.c_str());
}
@ -141,6 +151,17 @@ class parse_error : public exception
private:
parse_error(int id_, std::size_t byte_, const char* what_arg)
: exception(id_, what_arg), byte(byte_) {}
static std::string position_string(const position_t& pos)
{
if (pos.chars_read_total == 0)
{
return "";
}
return " at line " + std::to_string(pos.lines_read + 1) +
", column " + std::to_string(pos.chars_read_current_line);
}
};
/*!