Added installation of treesitter grammar for neovim

PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Jef Roosens
 
 pkgname=vieter-vls
-pkgver=latest.r1.g5fbfe67
+pkgver=latest.r0.g5fbfe67
 pkgrel=1
 pkgdesc="Language server for the V programming language; synced with the vieter-v compiler."
 arch=("x86_64" "aarch64")
@@ -9,7 +9,7 @@ arch=("x86_64" "aarch64")
 url="https://github.com/vlang/vls"
 license=("MIT")
 
-depends=("glibc" "vieter-v")
+depends=("glibc" "vieter-v" "gc")
 makedepends=("git" "gcc")
 
 source=("$pkgname::git+https://github.com/vlang/vls")
@@ -22,12 +22,36 @@ pkgver() {
 build() {
     cd "$pkgname"
 
+    msg "Building vls..."
     v run build.vsh gcc
+
+    msg "Building treesitter grammar..."
+    # Patch the language server files & build the shared library
+    # Neovim wants all functions in the grammar library to correctly use the
+    # filetype, which in this case is vlang. However, the standard codebase
+    # uses v as the name.
+    mv tree_sitter_v tree_sitter_vlang
+
+    find tree_sitter_vlang \
+        -\( -iname '*.v' -or -iname '*.c' -or -iname '*.h' -\) \
+        -exec sed -i 's/tree_sitter_v/tree_sitter_vlang/' "{}" \;
+
+    # Building with -prod is required because otherwise, the binary contains
+    # tcc symbols which isn't usually installed on the user's system.
+    v -shared -prod tree_sitter_vlang
 }
 
 package() {
+    # Install vls
     install -dm755 "$pkgdir/usr/bin"
-
     install -Dm755 "$pkgname/bin/vls" "$pkgdir/usr/bin/vls"
     install -Dm644 "$pkgname/LICENSE" -t "$pkgdir/usr/share/licenses/$pkgname"
+
+    # Install treesitter grammar
+    # This package installs the parser & queries for Neovim in its runtimepath
+    install -dm755 "$pkgdir/usr/share/nvim/runtime/parser"
+    install -dm755 "$pkgdir/usr/share/nvim/runtime/queries/vlang"
+    install -Dm755 "$pkgname/tree_sitter_vlang/tree_sitter_vlang.so" "$pkgdir/usr/share/nvim/runtime/parser/vlang.so"
+    install -m644 "$pkgname/tree_sitter_vlang/queries"/* "$pkgdir/usr/share/nvim/runtime/queries/vlang"
+
 }