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nixpkgs/pkgs/development/tools/parsing/tree-sitter/update.nix

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{ writeShellScript, nix-prefetch-git, formats
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, curl, jq, xe
, src }:
let
# Grammars we want to fetch from the tree-sitter github orga
knownTreeSitterOrgGrammarRepos = [
"tree-sitter-javascript"
"tree-sitter-c"
"tree-sitter-swift"
"tree-sitter-json"
"tree-sitter-cpp"
"tree-sitter-ruby"
"tree-sitter-razor"
"tree-sitter-go"
"tree-sitter-c-sharp"
"tree-sitter-python"
"tree-sitter-typescript"
"tree-sitter-rust"
"tree-sitter-bash"
"tree-sitter-php"
"tree-sitter-java"
"tree-sitter-scala"
"tree-sitter-ocaml"
"tree-sitter-julia"
"tree-sitter-agda"
"tree-sitter-fluent"
"tree-sitter-html"
"tree-sitter-haskell"
"tree-sitter-regex"
"tree-sitter-css"
"tree-sitter-verilog"
"tree-sitter-jsdoc"
"tree-sitter-ql"
"tree-sitter-embedded-template"
];
# repos of the tree-sitter github orga we want to ignore (not grammars)
ignoredTreeSitterOrgRepos = [
"tree-sitter"
"tree-sitter-cli"
# this is the haskell language bindings, tree-sitter-haskell is the grammar
"haskell-tree-sitter"
# this is the ruby language bindings, tree-sitter-ruby is the grammar
"ruby-tree-sitter"
# this is the (unmaintained) rust language bindings, tree-sitter-rust is the grammar
"rust-tree-sitter"
# this is the nodejs language bindings, tree-sitter-javascript is the grammar
"node-tree-sitter"
# this is the python language bindings, tree-sitter-python is the grammar
"py-tree-sitter"
# afl fuzzing for tree sitter
"afl-tree-sitter"
# archived
"highlight-schema"
# website
"tree-sitter.github.io"
];
jsonFile = name: val: (formats.json {}).generate name val;
# check in the list of grammars, whether we know all of them.
checkKnownGrammars = writeShellScript "get-grammars.sh" ''
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set -euo pipefail
known="${jsonFile "known-tree-sitter-org-grammar-repos" knownTreeSitterOrgGrammarRepos}"
ignore="${jsonFile "ignored-tree-sitter-org-repos" ignoredTreeSitterOrgRepos}"
res=$(${jq}/bin/jq \
--slurpfile known "$known" \
--slurpfile ignore "$ignore" \
'. - ($known[0] + $ignore[0])' \
)
if [ ! "$res" == "[]" ]; then
echo "These repositories are neither known nor ignored:" 1>&2
echo "$res" 1>&2
exit 1
fi
cat "$known"
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'';
# TODO
urlEscape = x: x;
# TODO
urlEscapeSh = writeShellScript "escape-url" ''printf '%s' "$1"'';
# generic bash script to find the latest github release for a repo
latestGithubRelease = { owner }: writeShellScript "latest-github-release" ''
set -euo pipefail
repo="$1"
res=$(${curl}/bin/curl \
--silent \
"https://api.github.com/repos/${urlEscape owner}/$(${urlEscapeSh} "$repo")/releases/latest")
if [[ "$(printf "%s" "$res" | ${jq}/bin/jq '.message?')" =~ "rate limit" ]]; then
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echo "rate limited" >&2
fi
release=$(printf "%s" "$res" | ${jq}/bin/jq '.tag_name')
# github sometimes returns an empty list even tough there are releases
if [ "$release" = "null" ]; then
echo "uh-oh, latest for $repo is not there, using HEAD" >&2
release="HEAD"
fi
echo "$release"
'';
# find the latest repos of a github organization
latestGithubRepos = { orga }: writeShellScript "latest-github-repos" ''
set -euo pipefail
res=$(${curl}/bin/curl \
--silent \
'https://api.github.com/orgs/${orga}/repos?per_page=100')
if [[ "$(printf "%s" "$res" | ${jq}/bin/jq '.message?')" =~ "rate limit" ]]; then
echo "rate limited" >&2
fi
printf "%s" "$res" | ${jq}/bin/jq 'map(.name)' \
|| echo "failed $res"
'';
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# update one tree-sitter grammar repo and print their nix-prefetch-git output
updateGrammar = { owner }: writeShellScript "update-grammar.sh" ''
set -euo pipefail
repo="$1"
latest="$(${latestGithubRelease { inherit owner; }} "$repo")"
echo "Fetching latest release ($latest) of $repo " >&2
${nix-prefetch-git}/bin/nix-prefetch-git \
--quiet \
--no-deepClone \
--url "https://github.com/${urlEscape owner}/$(${urlEscapeSh} "$repo")" \
--rev "$latest"
'';
update-all-grammars = writeShellScript "update-all-grammars.sh" ''
set -euo pipefail
echo "fetching list of grammars" 1>&2
grammars=$(${latestGithubRepos { orga = "tree-sitter"; }})
echo "checking against the list of grammars we know" 1>&2
knownGrammars=$(printf '%s' "$grammars" | ${checkKnownGrammars})
# change the json list into a item-per-line bash format
grammarNames=$(printf '%s' "$knownGrammars" | ${jq}/bin/jq --raw-output '.[]')
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outputDir="${toString ./.}/grammars"
mkdir -p "$outputDir"
updateCommand=$(printf \
'${updateGrammar { owner = "tree-sitter"; }} "$1" > "%s/$1.json"' \
"$outputDir")
printf '%s' "$grammarNames" \
| ${xe}/bin/xe -j2 -s "$updateCommand"
( echo "{"
printf '%s' "$grammarNames" \
| ${xe}/bin/xe -s 'printf " %s = (builtins.fromJSON (builtins.readFile ./%s.json));\n" "$1" "$1"'
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echo "}" ) \
> "$outputDir/default.nix"
'';
in update-all-grammars