Add Flatbuffers language and grammar (#14275)

Author: aidalgol

book/src/generated/lang-support.md

@@ -68,6 +68,7 @@
 | fga | ✓ | ✓ | ✓ |  |  |  |
 | fidl | ✓ |  |  |  |  |  |
 | fish | ✓ | ✓ | ✓ |  |  | `fish-lsp` |
+| flatbuffers | ✓ |  |  |  |  |  |
 | forth | ✓ |  |  |  |  | `forth-lsp` |
 | fortran | ✓ |  | ✓ |  |  | `fortls` |
 | fsharp | ✓ |  |  |  |  | `fsautocomplete` |

languages.toml

@@ -446,6 +446,18 @@ formatter = { command = "fish_indent" }
 name = "fish"
 source = { git = "https://github.com/ram02z/tree-sitter-fish", rev = "a78aef9abc395c600c38a037ac779afc7e3cc9e0" }
 
+[[language]]
+name = "flatbuffers"
+scope = "source.flatbuffers"
+injection-regex = "(flatbuffers?|fbs)"
+file-types = ["fbs"]
+comment-token = "//"
+indent = { tab-width = 2, unit = " " }
+
+[[grammar]]
+name = "flatbuffers"
+source = { git = "https://github.com/yuanchenxi95/tree-sitter-flatbuffers", rev = "95e6f9ef101ea97e870bf6eebc0bd1fdfbaf5490" }
+
 [[language]]
 name = "mint"
 scope = "source.mint"

runtime/queries/flatbuffers/highlights.scm

@@ -0,0 +1,89 @@
+[
+    "namespace"
+    "attribute"
+    "table"
+    "struct"
+    "union"
+    "enum"
+    "root_type"
+    "rpc_service"
+    "file_extension"
+    "file_identifier"
+] @keyword
+
+"include" @keyword.control.import
+
+[
+  ";"
+  "."
+  ","
+] @punctuation.delimiter
+
+(type) @type.builtin
+(string_constant) @string
+
+[
+    (true)
+    (false)
+] @constant.builtin.boolean
+
+[
+    (inf_token)
+    (nan_token)
+] @constant.builtin
+
+[
+    (int_lit)
+    (int_constant)
+] @constant.numeric.integer
+
+[
+    (float_lit)
+    (float_constant)
+] @constant.numeric.float
+
+
+(comment) @comment
+(documentation) @comment.line.documentation
+
+[
+  "("
+  ")"
+  "["
+  "]"
+  "{"
+  "}"
+]  @punctuation.bracket
+
+[
+    (metadata)
+] @attribute
+
+(attribute_decl
+  attribute_name: (identifier) @string)
+
+(namespace_decl
+    namespace_ident: (full_ident) @namespace)
+
+(type_decl
+    table_or_struct_name: (identifier) @type)
+
+(enum_decl
+    enum_name: (identifier) @type)
+
+(enum_val_decl
+    enum_key: (identifier) @type)
+
+(union_decl
+    union_name: (identifier) @type)
+
+(root_decl
+    root_type_ident: (identifier) @type)
+
+(rpc_decl
+    rpc_name: (identifier) @type)
+
+(rpc_method
+    rpc_method_name: (identifier) @function
+    rpc_parameter: (identifier) @variable.parameter
+    rpc_return_type: (identifier) @type)