From e0de6ddf16a37435966e31a73b4425a0300dc1e6 Mon Sep 17 00:00:00 2001
From: Shagun Agrawal <agrawalshagun07@gmail.com>
Date: Sat, 3 Aug 2024 02:45:43 +0530
Subject: Add tacky IR stage

Add Tacky IR stage

General formatting etc
---
 src/cljcc/parser.clj | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

(limited to 'src/cljcc/parser.clj')

diff --git a/src/cljcc/parser.clj b/src/cljcc/parser.clj
index d19ddd1..8852d91 100644
--- a/src/cljcc/parser.clj
+++ b/src/cljcc/parser.clj
@@ -11,10 +11,11 @@
 (def c-parser
   (insta/parser
    "<program> = function+
-    function = #'int\\b' identifier <'('> #'void\\b' <')'> <'{'> statement+ <'}'>
+    function = #'int\\b' identifier <'('> #'void\\b' <')'> <'{'> statement <'}'>
     statement = #'return\\b' exp <';'>
     exp = exp-prime
-    <exp-prime> = constant | unop exp-prime | <'('> exp-prime <')'>
+    <exp-prime> = constant | unop-exp | <'('> exp-prime <')'>
+    unop-exp = unop exp
     unop = #'-' | #'~'
     identifier = #'[a-zA-Z_]\\w*\\b'
     constant = #'[0-9]+\\b'
@@ -29,21 +30,17 @@
 
 (comment
 
- (parse "int main(void) {return 2;}")
+  (parse "int main(void) {return 2;}")
 
- (parse "
+  (parse "
   int main(void) {
   return 2;
-  return 2;
   }")
 
- (parse "int main(void) {
+  (parse "int main(void) {
    return -(((((10)))));
    }")
 
- (parse "int main(void) {
-   return --2;
+  (parse "int main(void) {
    return -(((((10)))));
-   }")
-
- ,)
+   }"))
-- 
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