From af8409931b7191d2145c18288f8a84e7fa25de6c Mon Sep 17 00:00:00 2001
From: Edmondo Porcu <edmondo.porcu@gmail.com>
Date: Fri, 19 Sep 2025 14:56:22 -0400
Subject: [PATCH] Adding cedars policy language with queries

---
 lua/nvim-treesitter/parsers.lua | 10 +++++++
 queries/cedar/folds.scm         |  6 ++++
 queries/cedar/highlights.scm    | 51 +++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+)
 create mode 100644 queries/cedar/folds.scm
 create mode 100644 queries/cedar/highlights.scm

diff --git a/lua/nvim-treesitter/parsers.lua b/lua/nvim-treesitter/parsers.lua
index 31b691209..a53cb41d4 100644
--- a/lua/nvim-treesitter/parsers.lua
+++ b/lua/nvim-treesitter/parsers.lua
@@ -265,6 +265,16 @@ list.capnp = {
   maintainers = { "@amaanq" },
 }
 
+list.cedar = {
+  install_info = {
+    url = "https://github.com/chrnorm/tree-sitter-cedar",
+    branch = "main",
+    files = { "src/parser.c" },
+  },
+  filetype = "cedar",
+  maintainers = { "@edmondop" },
+}
+
 list.chatito = {
   install_info = {
     url = "https://github.com/ObserverOfTime/tree-sitter-chatito",
diff --git a/queries/cedar/folds.scm b/queries/cedar/folds.scm
new file mode 100644
index 000000000..b2f77ffbe
--- /dev/null
+++ b/queries/cedar/folds.scm
@@ -0,0 +1,6 @@
+[
+  (policy)
+  (record_literal)
+  (set_literal)
+  (condition)
+] @fold
diff --git a/queries/cedar/highlights.scm b/queries/cedar/highlights.scm
new file mode 100644
index 000000000..4ca36fe18
--- /dev/null
+++ b/queries/cedar/highlights.scm
@@ -0,0 +1,51 @@
+
+; Main policy structure
+(policy) @keyword
+(effect) @keyword
+(scope) @keyword
+
+; Expressions
+(binary_expression) @operator
+(unary_expression) @operator
+(call_expression) @function.call
+(ext_fun_call) @function.call
+(selector_expression) @property
+(has_expression) @operator
+(like_expression) @operator
+(contains_expression) @operator
+(contains_all_expression) @operator
+(is_expression) @operator
+
+; Literals
+(record_literal) @punctuation.bracket
+(set_literal) @punctuation.bracket
+(entity) @constant
+
+; Conditions
+(condition) @keyword
+
+; Annotations
+(annotation) @attribute
+
+; Constraints
+(principal_constraint) @variable.builtin
+(action_constraint) @variable.builtin
+(resource_constraint) @variable.builtin
+
+; Basic punctuation
+[
+  "("
+  ")"
+  "{"
+  "}"
+  "["
+  "]"
+] @punctuation.bracket
+
+[
+  ","
+  ";"
+  "."
+  "::"
+  "@"
+] @punctuation.delimiter