wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-25 10:41:16 +02:00
Code Activity

add some comments

Browse source
This commit is contained in:
Ben Burdette 2020-06-04 11:53:19 -06:00
parent 721943e1d4
commit 94427ffee3
3 changed files with 42 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/libutil/error.cc
View file

@ -10,13 +10,16 @@ namespace nix {
const std::string nativeSystem = SYSTEM;
// addPrefix is used for show-trace. Strings added with addPrefix
// will print ahead of the error itself.
BaseError & BaseError::addPrefix(const FormatOrString & fs)
{
prefix_ = fs.s + prefix_;
return *this;
}
// c++ std::exception descendants must have a 'const char* what()' function.
// This stringifies the error and caches it for use by what(), or similarly by msg().
const string& BaseError::calcWhat() const
{
if (what_.has_value())
@ -53,6 +56,7 @@ string showErrPos(const ErrPos &errPos)
}
}
// if nixCode contains lines of code, print them to the ostream, indicating the error column.
void printCodeLines(std::ostream &out, const string &prefix, const NixCode &nixCode)
{
// previous line of code.