Add ebnf parser

queries/ebnf/highlights.scm

@@ -0,0 +1,43 @@
+;;;; Simple tokens ;;;;
+(terminal) @string.grammar
+
+(special_sequence) @string.special.grammar
+
+(integer) @number
+
+(comment) @comment
+
+;;;; Identifiers ;;;;
+
+; Allow different highlighting for specific casings
+((identifier) @type
+ (#match? @type "^[A-Z]"))
+
+((identifier) @symbol
+ (#match? @symbol "^[a-z]"))
+
+((identifier) @constant
+ (#match? @constant "^[A-Z][A-Z0-9_]+$"))
+
+;;; Punctuation ;;;;
+[
+ ";"
+ ","
+] @punctuation.delimiter
+
+[
+ "|"
+ "*"
+ "-"
+] @operator
+
+"=" @keyword.operator
+
+[
+ "("
+ ")"
+ "["
+ "]"
+ "{"
+ "}"
+] @punctuation.bracket