hi

AndrewRayCode · AndrewRayCode · commit ccd9bb3b0c6c · 2026-03-05T22:40:24.000-08:00
diff --git a/src/preprocessor/preprocessor-grammar.pegjs b/src/preprocessor/preprocessor-grammar.pegjs
@@ -220,6 +220,8 @@ if_line "if"
   / token:IFNDEF identifier:IDENTIFIER {
     return node('ifndef', { token, identifier });
   }
+  // Intentionally defer parsing of the expression, macro expansion is first
+  // done on this string, then the expanded expression lexeme is parsed again
   / token:IF expression:token_string? {
     return node('if', { token, expression });
   }

Original file line number	Diff line number	Diff line change
`@@ -220,6 +220,8 @@ if_line "if"`
`220`	`220`	`/ token:IFNDEF identifier:IDENTIFIER {`
`221`	`221`	`return node('ifndef', { token, identifier });`
`222`	`222`	`}`
	`223`	`+ // Intentionally defer parsing of the expression, macro expansion is first`
	`224`	`+ // done on this string, then the expanded expression lexeme is parsed again`
`223`	`225`	`/ token:IF expression:token_string? {`
`224`	`226`	`return node('if', { token, expression });`
`225`	`227`	`}`