lix/src/libexpr/attr-path.hh

#pragma once

#include "eval.hh"

#include <string>
#include <map>

namespace nix {

MakeError(AttrPathNotFound, Error);
MakeError(NoPositionInfo, Error);

std::pair<Value *, Pos> findAlongAttrPath(
    EvalState & state,
    const std::string & attrPath,
    Bindings & autoArgs,
    Value & vIn);

/* Heuristic to find the filename and lineno or a nix value. */
Pos findPackageFilename(EvalState & state, Value & v, std::string what);

std::vector<Symbol> parseAttrPath(EvalState & state, std::string_view s);

}
Use "#pragma once" to prevent repeated header file inclusion 2012-07-18 18:59:03 +00:00			`#pragma once`
* Refactoring: get the selection path stuff out of getDerivations() and put it into a separate function findAlongAttrPath(). 2006-07-26 15:05:15 +00:00
* Make sure that config.h is included before the system headers, because it defines _FILE_OFFSET_BITS. Without this, on OpenSolaris the system headers define it to be 32, and then the 32-bit stat() ends up being called with a 64-bit "struct stat", or vice versa. This also ensures that we get 64-bit file sizes everywhere. * Remove the redundant call to stat() in parseExprFromFile(). The file cannot be a symlink because that's the exit condition of the loop before. 2010-10-04 17:55:38 +00:00			`#include "eval.hh"`

* Refactoring: get the selection path stuff out of getDerivations() and put it into a separate function findAlongAttrPath(). 2006-07-26 15:05:15 +00:00			`#include <string>`
			`#include <map>`

* Use a proper namespace. * Optimise header file usage a bit. * Compile the parser as C++. 2006-09-04 21:06:23 +00:00			`namespace nix {`

findAlongAttrPath(): Throw AttrPathNotFound (cherry picked from commit 6b0ca8e803710342af70e257935724c5ad84ca04) 2019-04-08 12:20:58 +00:00			`MakeError(AttrPathNotFound, Error);`
nix edit: Support non-derivation attributes E.g. $ nix edit .#nixosConfigurations.bla now works. (cherry picked from commit d2032edb2f86e955a8a7724a27c0c3225f386500) 2020-02-07 13:22:01 +00:00			`MakeError(NoPositionInfo, Error);`
findAlongAttrPath(): Throw AttrPathNotFound (cherry picked from commit 6b0ca8e803710342af70e257935724c5ad84ca04) 2019-04-08 12:20:58 +00:00
Remove std::string alias (for real this time) Also use std::string_view in a few more places. 2022-02-25 15:00:00 +00:00			`std::pair<Value *, Pos> findAlongAttrPath(`
			`EvalState & state,`
			`const std::string & attrPath,`
			`Bindings & autoArgs,`
			`Value & vIn);`
* Refactoring: get the selection path stuff out of getDerivations() and put it into a separate function findAlongAttrPath(). 2006-07-26 15:05:15 +00:00
libexpr: findDerivationFilename return Pos instead of tuple 2019-10-28 20:22:38 +00:00			`/* Heuristic to find the filename and lineno or a nix value. */`
Rename findDerivationFilename -> findPackageFilename It does not operate on a derivation and does not return a derivation path. Instead it works at the language level, where a distinct term "package" is more appropriate to distinguish the parent object of `meta.position`; an attribute which doesn't even make it into the derivation. 2021-07-19 16:07:17 +00:00			`Pos findPackageFilename(EvalState & state, Value & v, std::string what);`
libexpr: add findDerivationFilename extract the derivation to filename:lineno heuristic 2019-10-23 15:21:10 +00:00
Some backports from the flakes branch 2020-06-18 11:44:40 +00:00			`std::vector<Symbol> parseAttrPath(EvalState & state, std::string_view s);`

* Use a proper namespace. * Optimise header file usage a bit. * Compile the parser as C++. 2006-09-04 21:06:23 +00:00			`}`