syntax: add grammar and highlighting for the alloy config lang (#13660)

book/src/generated/lang-support.md

@@ -3,6 +3,7 @@
 | ada | ✓ | ✓ |  | `ada_language_server` |
 | adl | ✓ | ✓ | ✓ |  |
 | agda | ✓ |  |  |  |
+| alloy | ✓ |  |  |  |
 | amber | ✓ |  |  |  |
 | astro | ✓ |  |  | `astro-ls` |
 | awk | ✓ | ✓ |  | `awk-language-server` |

languages.toml

@@ -4390,3 +4390,15 @@ language-servers = [ "clarinet" ]
 name = "clarity"
 source = { git = "https://github.com/xlittlerag/tree-sitter-clarity", rev = "7fa54825fdd971a1a676f885384f024fe2b7384a" }
 
+[[language]]
+name = "alloy"
+scope = "source.alloy"
+injection-regex = "alloy"
+file-types = ["alloy"]
+comment-token = "//"
+block-comment-tokens = { start = "/*", end = "*/" }
+indent = { tab-width = 2, unit = "  " }
+
+[[grammar]]
+name = "alloy"
+source = { git = "https://github.com/mattsre/tree-sitter-alloy", rev = "3e18eb4e97f06c57a3925f3d20bef6329a6eaef3" }

runtime/queries/alloy/highlights.scm

@@ -0,0 +1,39 @@
+; Literals
+; --------
+
+(boolean) @constant.builtin.boolean
+(comment) @comment
+(string) @string
+(number) @constant.numeric
+(null) @constant.builtin
+
+; Punctuation
+; -----------
+
+[
+  "("
+  ")"
+  "["
+  "]"
+  "{"
+  "}"
+]  @punctuation.bracket
+
+[
+  "."
+  ","
+] @punctuation.delimiter
+
+[
+  "="
+] @operator
+
+; Function definitions
+;---------------------
+
+(function
+  name: (identifier) @function)
+
+
+(attribute (identifier) @variable.other.member)
+(block (identifier) @type.builtin)