common/build-style: add build-style for building tree-sitter grammmars

Manual.md

@@ -1086,6 +1086,8 @@ matching the `build_style` name, Example:
 - `texmf` For texmf zip/tarballs that need to go into /usr/share/texmf-dist. Includes
 duplicates handling.
 
+- `tree-sitter` for tree-sitter language grammars.
+
 <a id="build_helper"></a>
 ### build helper scripts
 

common/build-style/tree-sitter.sh

@@ -0,0 +1,54 @@
+#
+# This helper is for templates using building tree-sitter grammars.
+#
+do_build() {
+	: "${treesitter_src:=./src}"
+	CFLAGS="-fPIC -Wall -I ./ -std=c99 $CFLAGS"
+	CXXFLAGS="-fPIC -Wall -I ./ -fno-exceptions $CXXFLAGS"
+	LDFLAGS="-shared $LDFLAGS"
+
+	if [ -z "${treesitter_lang}" ]; then
+		treesitter_lang="$(jq -re '.name' "${treesitter_src}/grammar.json")"
+	fi
+
+	cd "$treesitter_src"
+
+	msg_verbose "$CC $CFLAGS -c ./*.c\n"
+	$CC $CFLAGS -c ./*.c
+	if compgen -G "./*.cc"; then
+		msg_verbose "$CXX $CXXFLAGS -c ./*.cc\n"
+		$CXX $CXXFLAGS -c ./*.cc
+		msg_verbose "$CXX $LDFLAGS -o "$treesitter_lang.so" ./*.o\n"
+		$CXX $LDFLAGS -o "$treesitter_lang.so" ./*.o
+	else
+		msg_verbose "$CC $LDFLAGS -o "$treesitter_lang.so" ./*.o\n"
+		$CC $LDFLAGS -o "$treesitter_lang.so" ./*.o
+	fi
+	unset treesitter_lang
+}
+
+do_check() {
+	tree-sitter test
+}
+
+do_install() {
+	: "${treesitter_src:=./src}" "${treesitter_queries:=./queries}"
+
+	if [ -z "${treesitter_lang}" ]; then
+		treesitter_lang="$(jq -re '.name' "${treesitter_src}/grammar.json")"
+	fi
+
+	# Some programs expect grammar libs as <lang>.so in a specific
+	# directory, some expect libtree-sitter-<lang>.so on the library path.
+	vinstall "${treesitter_src}/${treesitter_lang}.so" 755 "usr/lib/tree-sitter"
+	ln -s "tree-sitter/${treesitter_lang}.so" "${DESTDIR}/usr/lib/libtree-sitter-${treesitter_lang}.so"
+
+	if [ -d "${treesitter_queries}" ] && compgen -G "./${treesitter_queries}/*.scm"; then
+		vmkdir "usr/share/tree-sitter/queries/${treesitter_lang}"
+		vcopy "${treesitter_queries}/*.scm" "usr/share/tree-sitter/queries/${treesitter_lang}"
+	elif [ -d "${treesitter_queries}/${treesitter_lang}" ] && compgen -G "./${treesitter_queries}/${treesitter_lang}/*.scm"; then
+		vmkdir "usr/share/tree-sitter/queries/${treesitter_lang}"
+		vcopy "${treesitter_queries}/${treesitter_lang}/*.scm" "usr/share/tree-sitter/queries/${treesitter_lang}"
+	fi
+	unset treesitter_lang
+}

common/environment/build-style/tree-sitter.sh

@@ -0,0 +1,3 @@
+lib32disabled=yes
+hostmakedepends+=" jq"
+checkdepends+=" tree-sitter-cli"