feat: parse printf-like format strings

tree-sitter · Apr 20, 2024 · fecec92 · fecec92
1 parent 1aafaff
commit fecec92
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/grammar.js b/grammar.js
@@ -1281,12 +1281,21 @@ module.exports = grammar({
     string_literal: $ => seq(
       choice('L"', 'u"', 'U"', 'u8"', '"'),
       repeat(choice(
-        alias(token.immediate(prec(1, /[^\\"\n]+/)), $.string_content),
+        alias(token.immediate(prec(1, /[^\\"\n\\%]+/)), $.string_content),
+        alias(token.immediate(/%/), $.string_content),
         $.escape_sequence,
+        $.format_string,
       )),
       '"',
     ),
 
+    format_string: ($) => token.immediate(seq(
+      '%',
+      optional(/[#0-\\ +\\']*/),
+      optional(/[\d]*[\\.]*[\d]*/),
+      optional(/(hh|h|l|ll|j|t|z|q|G|L)?/),
+      /[diouxXDOUeEfFgGaACcSspn%]/)),
+
     escape_sequence: _ => token(prec(1, seq(
       '\\',
       choice(