Commit graph

71 commits

Author SHA1 Message Date
Vincent Ambo
5f728cb428 feat(3p/nix): Add a derivation to launch clangd
This wrapper derivation (which assumes that the depot is available at
~/depot) can be used to actually get clangd working with
//third_party/nix.

In my setup I can launch this with M-x eglot, followed by

  env
    CLANGD_FLAGS='--compile-commands-dir=/home/tazjin/projects/nix-build'
    nix-shell -A third_party.nix --run 'nix-clangd' /home/tazjin/depot
2020-05-22 23:00:23 +01:00
Vincent Ambo
c25281820f fix(3p/nix/libexpr): Do not allow duplicate attribute insertion
This is closer to bug-for-bug compatibility with the previous version,
which would put new elements at the end of the array and (due to the
linear scan) return previous ones.
2020-05-22 20:30:22 +01:00
Vincent Ambo
f459332f32 chore: Update from Clang 9 to Clang 10 for all projects 2020-05-22 18:29:47 +01:00
Vincent Ambo
618f9a6f07 refactor(3p/nix/libexpr): Use gc_cpp to allocate Value instances 2020-05-22 16:57:48 +01:00
Vincent Ambo
b3c9166b23 refactor(3p/nix/libexpr): state->allocBindings -> Bindings::NewGC
EvalState::allocBindings had little to do with Bindings, other than
returning them, and didn't belong in that class.
2020-05-22 16:57:36 +01:00
Vincent Ambo
e24466c795 fix(3p/nix/libexpr): Make new Bindings class visible to GC 2020-05-22 16:35:21 +01:00
Vincent Ambo
68e6e92a20 chore(3p/nix/libexpr): Delete Bindings::sort
This function does nothing anymore since the attributes are always
in-order.
2020-05-22 03:35:07 +01:00
Vincent Ambo
986a8f6b75 fix(3p/nix): Update for usage of new attribute set API
The new attribute set API uses the iterators of the btree_map
directly. This requires changes in various files because the internals
of libexpr are very entangled.

This code runs and compiles, but there is a bug causing empty
attribute sets to be assigned incorrectly.
2020-05-22 01:59:39 +01:00
Vincent Ambo
42205f27fc refactor(3p/nix/libexpr): Use absl::btree_map::iterator type
Instead of using a custom Args* iterator, use the one belonging to the
map type directly.
2020-05-22 01:59:36 +01:00
Vincent Ambo
ee4637e3a2 refactor(3p/nix/libexpr): Use absl::btree_map::merge for '//'
Instead of doing some sort of inline merge-sort of the two attribute
sets, use the attribute sets merge function.

This commit alone does not build and is not supposed to.
2020-05-22 01:52:03 +01:00
Vincent Ambo
28e347effe refactor(3p/nix/libexpr): Use absl::btree_map for AttrSets
This is the first step towards replacing the implementation of
attribute sets with an absl::btree_map.

Currently many access are done using array offsets and pointer
arithmetic, so this change is currently causing Nix to fail in various
ways.
2020-05-21 19:21:55 +01:00
Vincent Ambo
a162f4e825 refactor(3p/nix/libexpr): Use std::string as qualified type
Replaces most uses of `string` with `std::string`.

This came up because I removed the "types.hh" import from
"symbol-table.hh", which percolated through a bunch of files where
`string` was suddenly no longer defined ... *sigh*
2020-05-21 05:43:22 +01:00
Vincent Ambo
b97307056d docs(3p/nix/libexpr): Add clarifying comments to SymbolTable 2020-05-21 05:42:20 +01:00
Vincent Ambo
c395a48be2 fix(3p/nix): Compatibility with updated SymbolTable
The functions in SymbolTable have been renamed to match the Google
Style guide, and some debug-only functions have been removed.
2020-05-21 05:09:23 +01:00
Vincent Ambo
97e85f94e5 refactor(3p/nix/libexpr): Use absl::node_hash_set in SymbolTable
This replaces the previous use of std::unordered_set with
absl::node_hash_set.

This type was chosen because the current implementation requires
pointer stability.

This does not yet touch the 'Attr' struct.

As a bonus, the implementation of the SymbolTable struct is now
consolidated into a single header/implementation file pair.
2020-05-21 05:09:23 +01:00
Vincent Ambo
00017ace04 feat(3p/nix): Wrangle Meson/Nix/CMake into (temporary) submission
Meson is unable to use CMake in Nix to determine the internal
structure of the Abseil libraries.

This commit adds an explicit list of most of the Abseil targets that
are relevant (so far) and bundles them into a list that is linked
together.
2020-05-21 04:50:49 +01:00
Vincent Ambo
a3b48e6562 chore(3p/nix): Minor fixes to get rid of warnings 2020-05-21 00:24:12 +01:00
Vincent Ambo
9dfdf16a8d fix(3p/nix): Fix build of derivation if cmake is present
cmake automatically runs a configure hook which breaks the build,
since this isn't actually a cmake project. This hook is now disabled.

Additionally Abseil's sources are linked to an absolute derivation
path when the build launches, as opposed to the relative path used for
development builds.
2020-05-21 00:24:10 +01:00
Vincent Ambo
43677021e3 refactor(3p/nix): Apply clang-tidy's performance-* fixes
This applies the performance fixes listed here:

https://clang.llvm.org/extra/clang-tidy/checks/list.html
2020-05-20 22:58:43 +01:00
Vincent Ambo
689ef502f5 refactor(3p/nix): Apply clang-tidy's readability-* fixes
This applies the readability fixes listed here:

https://clang.llvm.org/extra/clang-tidy/checks/list.html
2020-05-20 22:27:37 +01:00
Vincent Ambo
d331d3a0b5 refactor(3p/nix): Apply clang-tidy's modernize-* fixes
This applies the modernization fixes listed here:

https://clang.llvm.org/extra/clang-tidy/checks/list.html

The 'modernize-use-trailing-return-type' fix was excluded due to my
personal preference (more specifically, I think the 'auto' keyword is
misleading in that position).
2020-05-20 04:33:07 +01:00
Vincent Ambo
fed31b2c9b feat(3p/nix): Add some initial Abseil build targets
These make it possible to link to Abseil strings.
2020-05-20 04:02:23 +01:00
Vincent Ambo
e2fad0f0d2 feat(3p/nix): Add Abseil as a CMAKE subproject to Meson
Yep.

This is accomplished by symlinking the sources into the location
expected by Meson for subprojects.
2020-05-20 03:03:08 +01:00
Vincent Ambo
ffb2ae54be chore(third_party/nix): Dump of minor accumulated changes
None of these are worthy of a specific commit, or even have a real
reason behind them, but I didn't want to lose them.
2020-05-20 01:10:44 +01:00
Vincent Ambo
88f337588c refactor(3p/nix): Make all single-argument constructors explicit
Implicit constructors can be confusing, especially in a codebase that
is already as unintentionally obfuscated as this one.

https://google.github.io/styleguide/cppguide.html#Explicit_Constructors
2020-05-19 22:02:23 +01:00
Vincent Ambo
3908732181 style(3p/nix): Final act in the brace-wrapping saga
This last change set was generated by a full clang-tidy run (including
compilation):

    clang-tidy -p ~/projects/nix-build/ \
      -checks=-*,readability-braces-around-statements -fix src/*/*.cc

Actually running clang-tidy requires some massaging to make it play
nice with Nix + meson, I'll be adding a wrapper or something for that soon.
2020-05-19 20:51:32 +01:00
Vincent Ambo
cf40d08908 chore(3p/nix): Remove OSX only 'resolve-system-dependencies' tool 2020-05-19 20:34:12 +01:00
Vincent Ambo
83f4c37adf style(3p/nix/libstore): Additional if/for bracing fixes 2020-05-19 19:40:31 +01:00
Vincent Ambo
0b8415124d fix(3p/nix/libstore): Fix mistake introduced by bracing changes
This statement got included in a loop when it shouldn't have been. At
least it led to some funny derivation files!
2020-05-19 19:37:06 +01:00
Vincent Ambo
1841d93ccb style(3p/nix): Add braces around single-line for-loops
These were not caught by the previous clang-tidy invocation, but were
instead sorted out using amber[0] as such:

    ambr --regex 'for (\(.+\))\s([a-z].*;)' 'for $1 { $2 }'

[0]: https://github.com/dalance/amber
2020-05-19 19:04:08 +01:00
Vincent Ambo
867055133d style(3p/nix): Add braces around single-line conditionals
These were not caught by the previous clang-tidy invocation, but were
instead sorted out using amber[0] as such:

    ambr --regex 'if (\(.+\))\s([a-z].*;)' 'if $1 { $2 }'

[0]: https://github.com/dalance/amber
2020-05-19 18:55:58 +01:00
Vincent Ambo
c6a31838cd fix(3p/nix/libexpr): Declare value union types explicitly
Previously these structs were declared anonymously inside of the -
anonymous - union. This is not actually supported by the C++ standard,
but is merely a compiler-specific extension.

Unfortunately untangling this required a forward-declaration of the
Value type.
2020-05-19 18:19:35 +01:00
Vincent Ambo
b37ff365ad fix(3p/nix/libexpr): Use noexcept instead of throw() 2020-05-19 18:19:23 +01:00
Vincent Ambo
09cbc431cc fix(3p/nix): Fix incorrectly braced conditionals and loops
Fixes mistakes introduced by clang-tidy in the previous commit.
2020-05-19 18:01:12 +01:00
Vincent Ambo
b490742a51 style(3p/nix): Enforce braces around loops and conditionals
This change was generated with:

  fd -e cc -e hh | xargs -I{} clang-tidy {} -p ~/projects/nix-build/ \
    --checks='-*,readability-braces-around-statements' --fix \
    -fix-errors

Some manual fixes were applied because some convoluted unbraced
statements couldn't be untangled by clang-tidy.

This commit still includes invalid files, but I decided to clean them
up in a subsequent commit so that it becomes more obvious where
clang-tidy failed. Maybe this will allow for a bug-report to
clang-tidy.
2020-05-19 17:38:04 +01:00
Vincent Ambo
c758de9d22 style(3p/nix): Reformat all includes to match new style 2020-05-19 15:55:11 +01:00
Vincent Ambo
b508f5b91a style(3p/nix): Change include formatting config for clang-format
Changes the configuration to regroup all includes. The include groups
will be (in this order):

1. (in .cc): Include of the corresponding header
2. Includes of C++ standard library headers
3. Includes of other external headers
4. Includes of local headers
2020-05-19 15:55:09 +01:00
Vincent Ambo
62c18c9898 fix(3p/nix): Set C++ style to "Google" in Emacs locals 2020-05-19 05:13:47 +01:00
Vincent Ambo
95a57f15ca refactor(3p/nix/nix-*): Replace logging with glog in binaries 2020-05-19 04:52:47 +01:00
Vincent Ambo
9aa2ecd78c refactor(3p/nix/nix-daemon): Remove activities from protocol
Removes the activity transfer that was previously nulled out from the
daemon protocol completely.

This might actually break Nix completely, I haven't tried yet, but
that's fine because this will be replaced with gRPC.
2020-05-19 04:51:45 +01:00
Vincent Ambo
c7be956f3f style(3p/nix/libexpr): Reformat with clang-format 2020-05-19 04:51:01 +01:00
Vincent Ambo
f8deeb1442 chore(3p/nix/nix): Remove progress bar implementation
The progress bar has lots of complexity for little benefit. The
previous activity tracking stuff has been deleted as part of the
logging refactoring and I am not going to implement support for this
again for now.
2020-05-19 04:49:39 +01:00
Vincent Ambo
939dd9f817 refactor(3p/nix/libexpr): Replace logging.h with glog 2020-05-19 01:24:50 +01:00
Vincent Ambo
d0c44425e1 refactor(3p/nix/libmain): Replace logging.h with glog 2020-05-19 01:04:14 +01:00
Vincent Ambo
505b6b044b refactor(3p/nix/libstore): Replace logging.h with glog 2020-05-19 01:04:14 +01:00
Vincent Ambo
6dc6c29fa4 refactor(3p/nix/libutil): Replace internal logging library with glog 2020-05-18 02:34:41 +01:00
Vincent Ambo
c584480cd4 chore(3p/nix/libutil): Remove logging implementation 2020-05-18 00:39:50 +01:00
Vincent Ambo
0335b91b93 feat(3p/nix): Add glog dependency 2020-05-17 23:58:51 +01:00
Vincent Ambo
e797b4d09b chore(3p/nix): Always enable the garbage collector
It's unclear why this toggle existed, now it doesn't.
2020-05-17 22:27:53 +01:00
Vincent Ambo
168ef124ef fix(3p/nix): Minor fixes to derivation
* version must be set to use this as the system Nix
* missing busybox path is now set
* fixed build output names
2020-05-17 21:25:50 +01:00