feat(tera): add parser and queries

2 files changed, 160 insertions, 0 deletions

diff --git a/queries/tera/highlights.scm b/queries/tera/highlights.scm
new file mode 100644
index 000000000..f41ad826f
--- /dev/null
+++ b/queries/tera/highlights.scm
@@ -0,0 +1,153 @@
+; Variables
+;----------
+(identifier) @variable
+
+((identifier) @variable.builtin
+  (#any-of? @variable.builtin "loop" "__tera_context"))
+
+; Properties
+;-----------
+(member_expression
+  property: (identifier)? @variable.member)
+
+; Literals
+;-----------
+(string) @string
+
+(bool) @boolean
+
+(number) @number
+
+; Tokens
+;-----------
+[
+  "."
+  ","
+  "::"
+  (frontmatter_delimiter)
+] @punctuation.delimiter
+
+[
+  "*"
+  "/"
+  "%"
+  "|"
+  "+"
+  "-"
+  "~"
+  "="
+  "=="
+  "!="
+  "<"
+  ">"
+  "<="
+  ">="
+] @operator
+
+[
+  "("
+  ")"
+  "["
+  "]"
+  "{%"
+  "%}"
+  "-%}"
+  "{%-"
+  "}}"
+  "{{"
+  "-}}"
+  "{{-"
+] @punctuation.bracket
+
+; Tags
+;-----------
+(comment_tag) @comment @spell
+
+; Keywords
+;-----------
+[
+  "if"
+  "elif"
+  "else"
+  "endif"
+] @keyword.conditional
+
+[
+  "for"
+  "endfor"
+] @keyword.repeat
+
+[
+  "include"
+  "import"
+  "extends"
+] @keyword.import
+
+[
+  "in"
+  "and"
+  "or"
+  "not"
+  "is"
+] @keyword.operator
+
+[
+  "break"
+  "continue"
+] @keyword.return
+
+[
+  "set"
+  "set_global"
+  "filter"
+  "endfilter"
+  "block"
+  "endblock"
+  "macro"
+  "endmacro"
+  "raw"
+  "endraw"
+  "as"
+] @keyword
+
+; Functions
+;-----------
+(macro_statement
+  name: (identifier) @function
+  (parameter_list
+    parameter: (identifier) @variable.parameter
+    (optional_parameter
+      name: (identifier) @variable.parameter)))
+
+(call_expression
+  scope: (identifier)? @module
+  name: (identifier) @function.call)
+
+(call_expression
+  scope: (identifier) @module.builtin
+  name: (identifier) @function.call
+  (#eq? @module.builtin "self"))
+
+(call_expression
+  name: (identifier) @function.builtin
+  (#any-of? @function.builtin
+    ; Functions - https://keats.github.io/tera/docs/#built-in-functions
+    "range" "now" "throw" "get_random" "get_env"))
+
+(test_expression
+  test: (identifier) @function.call)
+
+(test_expression
+  test: (identifier) @function.builtin
+  (#any-of? @function.builtin
+    ; Tests - https://keats.github.io/tera/docs/#built-in-tests
+    "defined" "undefined" "odd" "even" "string" "number" "divisibleby" "iterable" "object"
+    "starting_with" "ending_with" "containing" "matching"))
+
+(filter_expression
+  filter: (identifier) @function.method.call)
+
+; Namespaces
+;-----------
+(import_statement
+  scope: (identifier) @module)
diff --git a/queries/tera/injections.scm b/queries/tera/injections.scm
new file mode 100644
index 000000000..394142081
--- /dev/null
+++ b/queries/tera/injections.scm
@@ -0,0 +1,7 @@
+(frontmatter
+  (content) @injection.content
+  (#set! injection.language "yaml")
+  (#set! injection.combined))
+
+((comment_tag) @injection.content
+  (#set! injection.language "comment"))