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Next (XXX XX 2024)

  • Add support for specifying custom subproject_dir (top level directory name that holds Meson subprojects)

4.2.0 (May 03 2024)

  • Add mesonlint tool that allows to lint a project and to check+fix the formatting. It's currently not integrated with the language server.
  • Fix a few deprecation informations (#70, by @ptomato)
  • Fix crash if there was an iteration statement without variables
  • Add option to emit warnings, if a loop variable has the same name as a enclosing one. (disableIterationVariableShadowingLint)
  • Add option to emit warnings, if a loop variable is overwritten in the body. (Off by default, enableIterationVariableLint)
  • Fix types of default_options
  • Make mesonlsp compile on aarch64-unknown-linux-gnu
  • Don't report warning about format identifiers in string for vcs_tag::@replace_string@
  • Show errors for nested ternaries, as they are forbidden.
  • Add a few new kwargs from meson 1.4.0

4.1.8 (Apr 01 2024)

  • Minor fix

4.1.6 (Apr 01 2024)

  • Minor fix

4.1.5 (Apr 01 2024)

  • Build fix

4.1.4 (Apr 01 2024)

  • Misc improvements to .spec file and buildsystem
  • Minor fixes

4.1.3 (Mar 23 2024)

  • Add formatting support for windows

4.1.1 (Mar 19 2024)

  • Adjust artifact names
  • New AUR package by @polyzen

4.1.0 (Mar 14 2024)

  • Reduce memory usage
  • Improved error handling.

4.0.0 (Mar 13 2024)

  • Rewrite in C++
  • Rename binary to mesonlsp
  • Add --version switch (C++ version)
  • Drop support for Debian/Ubuntu packages
  • Drop support for AUR packages
  • Drop support for macos 12
  • Add support for inlay hints for positional arguments.
  • Improve auto-completion
  • Adding/Changing subprojects requires languagserver restart on Windows/macOS. This will be addressed in future releases
  • muon is now built-in. => others.muonPath is obsolete now.
  • Add linting.disableUnusedVariableCheck that allows disabling checks for unused variables
  • Add linting.disableArgTypeChecking to disable type checking of argument types.
  • Add others.defaultFormattingConfig that takes a path to the default muon config file.
  • Add others.removeDefaultTypesInInlayHints that allows removing clutter from inlay hints.
  • Add others.useCustomParser to use a custom parser (true by default)
  • Add others.disablePosargInlayHints to disable inlay hints for positional arguments
  • Formatting will now respect muon_cfg.ini
  • Bug fixes to the unused variable check
  • File size decreases
  • Major performance improvements
  • Less RAM usage
  • Various typing improvements

3.1.4 (Mar 05 2024)

  • Fix binary name (Related to #34)
  • Fix default_options accepts a dictionary (#48)
  • Fix gnome::generate_gir@env

3.1.3 (Nov 19 2023)

  • Fix race condition (#31)

3.1.2 (Nov 19 2023)

  • Improve heuristics for subdir(x)
  • Add first diagnostics for meson_options.txt/meson.options (#25)
  • Add missing str.splitlines method information (#30)
  • Add missing kwargs

3.1.1 (Nov 02 2023)

  • Fix regression where changed configuration wasn't applied.

3.1.0 (Nov 02 2023)

  • Mark variables as used, if they are in a format string
  • Improve heuristics for subdir(x)
  • Add others.muonPath option that allows you to set the path to the muon binary that should be used.
  • Fix some edge cases on hover.
  • Remove webserver due to difficulties integrating it with the updated sourcekit-lsp
  • Update sourcekit-lsp. (Basically rewrites the server portion) It is quite possible there are regressions!
  • Don't report stats to the server anymore.
  • Update meson API definitions to cfec255027ca7c928defcc665a12e91b439c7c3f
  • Add support for meson.options files (And prefer them over meson_options.txt)
  • Fix formatting for bigger files

3.0.22 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.21 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.20 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.19 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.18 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.17 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.16 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.15 (Oct 27 2023)

  • Test-Release for enhanced release workflow

3.0.14 (Oct 27 2023)

  • Provide universal binaries (x86_64, arm64, by @fwcd, #23)

3.0.13 (Oct 25 2023)

  • Test-Release for enhanced release workflow

3.0.12 (Oct 25 2023)

  • Test-Release for enhanced release workflow

3.0.11 (Oct 25 2023)

  • Test-Release for enhanced release workflow

3.0.10 (Oct 25 2023)

  • Test-Release for enhanced release workflow

3.0.9 (Oct 25 2023)

  • Test-Release for enhanced release workflow

3.0.8 (Oct 25 2023)

  • Test-Release for enhanced release workflow

3.0.7 (Oct 25 2023)

  • Support folding ranges
  • @ferdnyc fixed the COPR versioning (#19)
  • Fix bug that caused "Updating subprojects" to be persistent.
  • Disable downloads of wraps/subprojects, if others.neverDownloadAutomatically is set. This will show you errors, for every subproject('XXX') call that is only available as wrap!
  • Deduplicate CompletionItems
  • Improve CI
  • Wait until the meson source tree is rebuilt, before building completions. This may improve the UX of the auto-completion.

3.0.6 (Oct 24 2023)

  • Add semantic tokens for functions and methods
  • Add others.disableInlayHints configuration option for disabling inlay hints (#15)
  • Fix major bug with semantic tokens

3.0.5 (Oct 23 2023)

  • Fix semantic tokens
  • Minor improvements to the hover-tooltip
  • Differentiate @s and the variable between in format-strings
  • Other improvements to the semantic tokens

3.0.4 (Oct 23 2023)

  • Fix accidental regressions with the release process

3.0.3 (Oct 23 2023)

  • Fix accidental regressions with the release process

3.0.2 (Oct 23 2023)

  • Fix accidental regressions with the release process

3.0.1 (Oct 23 2023)

  • Fix upload of Windows binaries

3.0.0 (Oct 23 2023)

  • Improve formatting support on Windows (Or add it, if it ever worked)
  • Improve layout of tooltips of functions/methods. (#13)
  • Improve error messages for unknown functions/methods (Related to vscode-meson#159
  • Improve meson API coverage (Related to vscode-meson#159)
  • Add a few missing compiler/argument/arch ids (Related to vscode-meson#159)
  • Don't detect assignments from declare_dependency as unused assignments
  • Improve heuristics for subdir(x) with non-constant values of x (#18)
  • Add a bit of configuration possibilities, configurable with the InitializationOptions and workspace/didChangeConfiguration

2.4.4 (Sep 31 2023)

  • Add partial auto-completion after string literals
  • Add diagnostics for str.format()
  • Improve other aspects of auto-completion

2.4.3 (Sep 22 2023)

  • Switch to swift-log/swift-tools-support-core fork to fix compilation failures on Fedora 39 and Arch-Linux.

2.4.2 (Sep 19 2023)

  • Add preliminary Swift 5.9 support
  • Minor internal improvements

2.4.1 (Sep 12 2023)

  • Bump API definitions to mesonbuild/meson#6cfd2b4d5bd30b372268c25308b1cb00afd0996d
  • Huge improvements to auto-completion

2.4 (Sep 02 2023)

  • Emit deprecation warnings based on meson_version (#9)
  • Add basic file auto-completion

2.3.15 (Jul 06 2023)

  • Minor fixes

2.3.14 (Jul 06 2023)

  • Minor fixes

2.3.13 (Jul 06 2023)

  • Minor fixes

2.3.12 (Jul 05 2023)

  • Minor fixes

2.3.11 (Jul 05 2023)

  • Minor fixes

2.3.10 (Jul 05 2023)

  • Minor fixes

2.3.9 (Jul 05 2023)

  • Minor fixes

2.3.8 (Jul 01 2023)

  • Minor fixes

2.3.7 (Jul 01 2023)

  • Minor fixes

2.3.6 (Jul 01 2023)

  • Minor fixes

2.3.5 (Jul 01 2023)

  • Minor fixes

2.3.4 (Jul 01 2023)

  • Test uploading to swift-mesonlsp-apt-repo

2.3.3 (Jul 01 2023)

  • Fix typo

2.3.2 (Jul 01 2023)

  • Remove meson buildsystem introduced in v2.2
  • Only enable renaming in GNOME-Builder. It is broken in VSCode and Kate at least. (See #7 and #8)
  • Regression fixes for codeactions (Note this release is only submitted to COPR and available via the Github Actions tab due to testing I need to do)

2.3.1 (Jun 18 2023)

  • Auto-complete pkg-config package names in dependency('foo')
  • Add /stats endpoint on Linux. It shows the amount of requests, notifications and the memory usage over the time.
  • Only start rebuilding a tree, if it hasn't changed for 100ms. This lowers the CPU load and decreases the growth of the memory usage.
  • Misc bug fixes
  • Auto-complete option names in get_option()
  • Show error, if attempting to assign to a reserved variable.

2.3 (Jun 10 2023)

  • Fix race condition that lead to crashes, especially during initialization
  • Show error if variable does not exist in subproject
  • Show error if subproject does not exist
  • Added the ability to the CLI of the language server to generate a graph of the subdirectory structure.
  • Add code action to automatically download wrap from WrapDB
  • Renaming support. Please note that this is somewhat experimental and may break. So make backups before attempting to rename variables.
  • Do basic typechecking of arguments. It is quite imprecise, but should catch a lot of really wrong types, but it does not differentiate between list(foo) and foo due to the unfolding rules.

2.2 (May 13 2023)

Note: All codeactions insert code unformatted

  • Build on macOS 13 in CI
  • Upload macOS 13 binaries to releases
  • Show error, if there is an assignment statement from void
  • Add /count endpoint that shows the amount of nodes for each (sub)project. It probably won't have any use for endusers.
  • Add /status endpoint that shows if all required programs were found
  • Show error, if there are more than two identifiers in iteration statements.
  • Show error for breaks/continues outside of loops
  • Add codeaction for converting integer literals to other bases
  • Auto complete subproject variables in subproject.get_variable()
  • Add code action to switch from static_library() etc to library()
  • Add code action to convert from shared_library to shared_module and reverse
  • Add code action to sort filenames in calls to executable, library and similar. (Only works, if everything is either a string literal or an identifier)
  • Update subprojects on launch
  • Add code action for moving to fs.copyfile() from configure_file(copy: true). Note the refactored code won't be formatted.
  • Add code action to create dependency from library
  • Add a very experimental meson build system. Requires a meson fork. Don't rely on it, as the buildsystem may be removed without any further notice. It's just a Proof-of-concept.

2.1 (Apr 22 2023)

  • Show choices for array/combo options on hover
  • Build .deb files for Ubuntu 18.04/20.04/22.04 and Debian stable/testing/unstable in CI
  • Setup APT Repo for these distributions
  • Include identifiers in auto-completion
  • Send progress of setting up the subprojects to the client (Includes work upstream)
  • Fix crash, if setting up and parsing subprojects was faster than parsing the project itself.
  • Show error, if first statement in root meson.build is not a call to project()
  • Bump COPR to build for Fedora 38.
  • Show warnings for duplicate keyword arguments

2.0 (Apr 11 2023)

  • Only rebuild tree after loading subprojects if a subproject was found
  • Rebuild trees of folder based subprojects. This allows e.g. editing while preserving features like hover/document symbols
  • Show type documentation on hover, if identifier has only one type
  • Enable diagnostic webserver on MacOS
  • Add endpoint /caches in built-in webserver to ease debugging (Linux/MacOS-only)
  • Print backtrace on signal using swift-backtrace
  • Send diagnostics for subprojects to the editor
  • Drop swift-atomics dependency
  • Detect subprojects that weren't setup fully and reattempt
  • Include license and 3rd party libraries in release artifacts
  • Show option documentation on hover
  • Show warning for duplicate keys in dictionary literals

1.6 (Apr 08 2023)

  • Don't depend on unzip/tar/xz/bzip2/gunzip for extracting wraps and their patches
  • Build binaries for Ubuntu 18.04 and 20.04 in CI
  • Measure code coverage in CI
  • Cache downloaded wraps (wrap-file only) and downloaded patches
  • Setup AUR package for Archlinux
  • Implement read-only navigation for subprojects. Formatting won't be supported. Editing the meson code of subprojects that come from .wrap files is undefined behavior and may cause strange issues.
  • Use variables from subprojects during type analysis.

1.5.1 (Apr 02 2023)

  • Use snippets during auto completion
  • Setup COPR for Fedora
  • Don't show message with memory stats in the editor anymore, as especially in VSCode is was quite annoying.
  • Move development from master to main branch

1.5 (Mar 28 2023)

  • Add dead code detection
  • Add detection for code without effect
  • Detect unused assignments
  • Allow downloading and setting up wraps
  • Warn about use of deprecated options
  • Add error, if an option does not exist
  • Check compiler.get_id, compiler.get_argument_syntax, compiler.get_linker_id, build_machine.cpu_family and build_machine.system against known values.
  • Performance loss between 10% and 20% depending on the project, due to implementing these advanced code analyzers

1.4.1 (Mar 20 2023)

  • Major code cleanups
  • Replaced PathKit dependency by a vendored version.
  • Restructured code to allow support for other platforms.
  • Add MacOS CI (Provides freshly compiled binaries for testing)

1.4 (Mar 17 2023)

  • Add support for deriving strings in subdir(x)/set_variable(x), where x is not a string literal. The implementation is good enough for parsing WrapDB, GNOME and ElementaryOS correctly.
  • Improve dashboard to show more information and work offline
  • Minor code cleanups
  • Minor performance improvements
  • Add regression tests in CI
  • Add more projects to benchmark suite
  • Update tree-sitter parser

1.3 (Mar 11 2023)

  • Implement inlay hints
  • Implement textDocument/documentHighlight
  • Listen to workspace/didCreateFiles and workspace/didDeleteFiles
  • Slightly improve auto completion
  • Send memory usage information to the server periodically
  • Fix a lot of type definitions
  • Add some heuristics for subdir(x), where x is not a string literal. This allows parsing e.g. GTK correctly.
  • Add web-based dashboard for showing performance over the time

1.2.1 (Feb 16 2023)

  • Upload binary on release

1.2 (Feb 16 2023)

  • Cache AST for all unopened documents
  • Cancel rebuilding the tree, if another rebuild has started
  • Fix some bugs with jumping to declaration. (Sadly comes with a performance regression)
  • Add required code for VSCode
  • Add installation instructions for Kate
  • Don't advertise support for higlighting
  • Bump swift-argument-parser
  • Setup CI workflow to measure RAM-usage/performance regressions

1.1 (Feb 13 2023)

Changes

  • Reduced memory usage (Up to 60%) by just allocating methods for each type only once, instead for each object created.
  • Improve performance for some projects (0%-60%) by switching from structs to classes for all types. This reduces the amount of copying needed.
  • On the other side, improvements to the type analysis had some negative performance impact. See the measurements below.
  • Fix a lot of bad type definitions (Some still remain, feel free to file bugs/submit a PR if you encounter one)
  • Implement some test cases for validation of the type deduction and the emitted diagnostics
  • Use meson test cases to check for bad type definitions.
  • Show an error if the condition is not bool
  • Show an error if the number of identifiers in a foreach-loop is not appropriate for the type on the right side
  • Several other added diagnostics
  • Improve the handling of if-Statements during type deduction
  • Fix some bugs regarding the handling of binary expressions during type analysis
  • Improve code quality
  • Add CI with automatic tests
  • Add --stdio flag for VSCode. (I have started to work on a fork of vscode-meson to add support, but it does not work yet. Feel free to reach out, if you want to help.)
  • If the CLI is used for parsing a project, print the diagnostics in an GCC-compatible style, so it can be used e.g. by IDEs.
  • Don't clear file if the meson.build file has parsing errors.
  • Bump tree-sitter-meson and fix some parser bugs:
    • Don't fail on empty files with an error
    • Allow uppercase 0X, 0B, 0O

Measurements

These measurements are based on the meson build system of four projects:

  • GNOME Builder (~4.8KLOC meson, medium size)
  • GNOME-Builder-Plugins (~465LOC meson, small size)
  • mesa (~16.4KLOC, huge size)
  • QEMU (~9.3KLOC, medium size)
Measurement v1.0 v1.1 Quotient ((v1.1/v1.0) * 100) - 100 Better?
Clean compile time (rm -rf .build&&swift build -c release --static-swift-stdlib) 182.93s 211.04s +15.4% 🔴
Binary size 86715656B 86591856B -0.14% 🟢
Binary size (Stripped) 55070672B 54934992B -0.24% 🟢
Parsing mesa 10 * 100 times 8m33.626s 8m35.773s +0.42% 🔴
Parsing QEMU 10 * 100 times 8m27.328s 5m56.167s -29.80% 🟢
Parsing gnome-builder 10 * 100 times 3m14.213s 2m32.249s -21.61% 🟢
Parsing GNOME-Builder-Plugins 10 * 100 times 0m39.257s 0m13.350s -65.99% 🟢
Allocated during parsing mesa (Sysprof) 630MB 666.8MB +5.84% 🔴
Allocated during parsing QEMU (Sysprof) 622MB 514MB -17.36% 🟢
Allocated during parsing gnome-builder (Sysprof) 253.7MB 263.3MB +3.78% 🔴
Allocated during parsing GNOME-Builder-Plugins (Sysprof) 70.0MB 30.2MB -56.86% 🟢
Allocations during parsing mesa (Sysprof) 10393258 9482006 -8.77% 🟢
Allocations during parsing QEMU (Sysprof) 11976168 7512774 -37.27% 🟢
Allocations during parsing gnome-builder (Sysprof) 4022854 3176052 -21.05% 🟢
Allocations during parsing GNOME-Builder-Plugins (Sysprof) 1497990 348596 -76.73% 🟢
Peak heap memory usage during parsing mesa (Heaptrack) 165.74M 25.93MB -84.36% 🟢
Peak heap memory usage during parsing QEMU (Heaptrack) 209.05M 25.01M -88.03% 🟢
Peak heap memory usage during parsing gnome-builder (Heaptrack) 129.73M 11.51M -91.12% 🟢
Peak heap memory usage during parsing GNOME-Builder-Plugins (Heaptrack) 113.93M 2.95M -97.41% 🟢
Memory usage of language server using mesa and rebuilding tree 70 times 493.9MB 60.7MB -87.71% 🟢

Parsing XYZ 10 * 100 times was measured like this:

echo v1.0
time for i in {0..9}; do
	echo $i
	# Will internally parse the tree 100 times
	# Including converting to an AST and doing
	# typeanalysis/typechecking
	# => 10 * 100 = 1000 iterations
	../v1.0 --path ./meson.build >/dev/null 2>&1
done
echo v1.1
time for i in {0..9}; do
	echo $i
	../v1.1 --path ./meson.build >/dev/null 2>&1
done

The number of allocations and the amount of allocations was tracked using Sysprof, just using "Memory Usage" and "Track Allocations" as instruments. The selected project will be parsed 100 times.

The peak heap memory was obtained by using heaptrack:

heaptrack ../v1.0 --path meson.build
heaptrack_print heaptrack.v1.0.somepid.zst | grep peak.heap
heaptrack ../v1.1 --path meson.build
heaptrack_print heaptrack.v1.1.somepid2.zst | grep peak.heap

Reference hardware/software:

Swift version 5.7.3 (swift-5.7.3-RELEASE)
Target: x86_64-unknown-linux-gnu

Fedora 37
11th Gen Intel i5-1135G7 (8) @ 4.200GHz

1.0

Initial release