From fbb4db921ec1cb59c9264aab78d4dd3a7ef6d030 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Thu, 19 Jun 2025 14:40:30 +0200
Subject: parse func decl head

---
 attocc.c | 36 +++++++++++++++++++++++++++++++-----
 makefile |  2 +-
 2 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/attocc.c b/attocc.c
index 5a575fa..82ea8d8 100644
--- a/attocc.c
+++ b/attocc.c
@@ -624,7 +624,9 @@ void token_print(struct token tok) {
 int token_step(struct token_iter *iter, struct token *a) {
   token_free(*a);
   *a = token_iter_next(iter);
+#ifdef DEBUG
   token_print(*a);
+#endif
   return a->kind == TOK_END || a->kind == TOK_ERROR;
 }
 
@@ -774,6 +776,12 @@ int read_type(struct global_context *gcx, struct token_iter *iter,
     if (token_step(iter, a))
       return 1;
     return 0;
+  } else if (a->data.keyword == KW_CHAR) {
+    ty->kind = TY_PRIMITIVE;
+    ty->index = 1;
+    if (token_step(iter, a))
+      return 1;
+    return 0;
   } else {
     return 1;
   }
@@ -786,13 +794,30 @@ int function_decl(struct global_context *gcx, struct token_iter *iter,
   while (1) {
     if (a->kind == TOK_SEPERATOR && a->data.seperator == SEP_RPAREN)
       break;
+    struct type type;
+    if (read_type(gcx, iter, a, &type))
+      return 1;
+    if (a->kind != TOK_IDENTIFIER) {
+      fprintf(stderr, "expected ident after arg type\n");
+      return 1;
+    }
+    char *name = strdup_failsafe(a->data.identifier);
+    if (token_step(iter, a))
+      return 1;
   }
   if (token_step(iter, a)) // rparen
     return 1;
+  if (a->kind == TOK_SEPERATOR && a->data.seperator == SEP_SEMICOLON) {
+    fprintf(stderr, "forward decl not supported yet\n");
+    return 1;
+  }
+  if (a->kind != TOK_SEPERATOR || a->data.seperator != SEP_LCURLY) {
+    fprintf(stderr, "expected lcurly after function head\n");
+    return 1;
+  }
   if (token_step(iter, a)) // lcurly
     return 1;
 
-  token_step(iter, a); // rcurly
   return 0;
 }
 
@@ -839,19 +864,20 @@ int toplevel(struct token_iter *iter) {
       if (a.kind == TOK_SEPERATOR && a.data.seperator == SEP_SEMICOLON) {
         // was a type decl, continue
         if (token_step(iter, &a))
-          return 1;
+          break;
       } else if (a.kind == TOK_IDENTIFIER) {
         // either var or func
         char *name = strdup_failsafe(a.data.identifier);
         if (token_step(iter, &a))
           return 1;
-
         if (a.kind == TOK_OPERATOR && a.data.operator == OP_ASSIGN) {
           // variable / constant
           TRAP
         } else if (a.kind == TOK_SEPERATOR && a.data.seperator == SEP_LPAREN) {
-          // function decl
-          TRAP
+          if (function_decl(&gcx, iter, &a, name))
+            return 1;
+          if (token_step(iter, &a))
+            break;
         } else {
           fprintf(stderr, "unknown type-ident started toplevel statement\n");
           return 1;
diff --git a/makefile b/makefile
index 07dcb29..436062c 100644
--- a/makefile
+++ b/makefile
@@ -1,7 +1,7 @@
 .PHONY: all clean test
 
 attocc: attocc.c
-	cc -DDEBUG -O3 -o $@ $<
+	cc -O3 -o $@ $<
 
 ALL = attocc attocc-small attocc-debug attocc-test attocc-test-opt
 
-- 
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