languages: add CEL, SpiceDB schema language (#9296)

* languages: add CEL language and grammar

* languages: add spicedb schema language

* chore: docgen

* runtime/queries: refine spicedb & cel highlights

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* languages: update spicedb

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

4 files changed, 122 insertions, 0 deletions

diff --git a/runtime/queries/cel/highlights.scm b/runtime/queries/cel/highlights.scm
new file mode 100644
index 00000000..ab3bae5a
--- /dev/null
+++ b/runtime/queries/cel/highlights.scm
@@ -0,0 +1,66 @@
+; Operators
+
+[
+  "-"
+  "!"
+  "*"
+  "/"
+  "&&"
+  "%"
+  "+"
+  "<"
+  "<="
+  "=="
+  ">"
+  ">="
+  "||"
+] @operator
+
+; Keywords
+
+[
+"in"
+] @keyword
+
+; Function calls
+
+(call_expression
+  function: (identifier) @function)
+
+(member_call_expression
+  function: (identifier) @function)
+
+; Identifiers
+
+(select_expression
+  operand: (identifier) @type)
+
+(select_expression
+  operand: (select_expression
+    member: (identifier) @type))
+
+(identifier) @variable.other.member
+
+; Literals
+
+[
+  (double_quote_string_literal)
+  (single_quoted_string_literal)
+  (triple_double_quote_string_literal)
+  (triple_single_quoted_string_literal)
+] @string
+
+[
+  (int_literal)
+  (uint_literal)
+] @constant.numeric.integer
+(float_literal) @constant.numeric.float
+
+[
+  (true)
+  (false)
+] @constant.builtin.boolean
+
+(null) @constant.builtin
+
+(comment) @comment
diff --git a/runtime/queries/spicedb/highlights.scm b/runtime/queries/spicedb/highlights.scm
new file mode 100644
index 00000000..63c93955
--- /dev/null
+++ b/runtime/queries/spicedb/highlights.scm
@@ -0,0 +1,47 @@
+; highlights.scm
+
+[
+  "definition"
+  "caveat"
+  "permission"
+  "relation"
+  "nil"
+] @keyword
+
+[
+  ","
+  ":"
+] @punctuation.delimiter
+
+[
+  "("
+  ")"
+  "{"
+  "}"
+] @punctuation.bracket
+
+[
+  "|"
+  "+"
+  "-"
+  "&"
+  "#"
+  "->"
+  "="
+] @operator
+("with") @keyword.operator
+
+[
+  "nil"
+  "*"
+] @constant.builtin
+
+(comment) @comment
+(type_identifier) @type
+(cel_type_identifier) @type
+(cel_variable_identifier) @variable.parameter
+(field_identifier) @variable.other.member
+[
+  (func_identifier)
+  (method_identifier)
+] @function.method
diff --git a/runtime/queries/spicedb/injections.scm b/runtime/queries/spicedb/injections.scm
new file mode 100644
index 00000000..f8cafc9d
--- /dev/null
+++ b/runtime/queries/spicedb/injections.scm
@@ -0,0 +1,5 @@
+((comment) @injection.content
+ (#set! injection.language "comment"))
+
+((caveat_expr) @injection.content
+ (#set! injection.language "cel"))
diff --git a/runtime/queries/spicedb/tags.scm b/runtime/queries/spicedb/tags.scm
new file mode 100644
index 00000000..a8fe932b
--- /dev/null
+++ b/runtime/queries/spicedb/tags.scm
@@ -0,0 +1,4 @@
+(object_definition
+  name: (type_identifier) @name) @definition.type
+
+(type_identifier) @name @reference.type