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path: root/src/libexpr/names.hh
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2020-06-08Move progress-bar.cc to libmainregnat
Needed so that we can include it as a logger in loggers.cc without adding a dependency on nix This also requires moving names.hh to libutil to prevent a circular dependency between libmain and libexpr
2019-12-10Make the Store API more type-safeEelco Dolstra
Most functions now take a StorePath argument rather than a Path (which is just an alias for std::string). The StorePath constructor ensures that the path is syntactically correct (i.e. it looks like <store-dir>/<base32-hash>-<name>). Similarly, functions like buildPaths() now take a StorePathWithOutputs, rather than abusing Path by adding a '!<outputs>' suffix. Note that the StorePath type is implemented in Rust. This involves some hackery to allow Rust values to be used directly in C++, via a helper type whose destructor calls the Rust type's drop() function. The main issue is the dynamic nature of C++ move semantics: after we have moved a Rust value, we should not call the drop function on the original value. So when we move a value, we set the original value to bitwise zero, and the destructor only calls drop() if the value is not bitwise zero. This should be sufficient for most types. Also lots of minor cleanups to the C++ API to make it more modern (e.g. using std::optional and std::string_view in some places).
2018-02-14Add splitVersion primop.Shea Levy
Fixes #1868.
2016-10-18replace own regex class with std::regexAlexander Ried
2014-10-03Don't recompile the same regex over and overEelco Dolstra
2012-07-18Use "#pragma once" to prevent repeated header file inclusionEelco Dolstra
2008-07-01* Export the nix-env derivation name parsing and version comparisonEelco Dolstra
logic through the `parseDrvName' and `compareVersions' primops. This will allow expressions to easily check whether some dependency is a specific needed version or falls in some version range. See tests/lang/eval-okay-versions.nix for examples.