From 6130381c23c2ca4e050e83b7a20e3ba56d0fc283 Mon Sep 17 00:00:00 2001
From: Tucker Evans <tuckerevans24@gmail.com>
Date: Sun, 8 Sep 2019 22:00:47 -0400
Subject: Adds type checking procedure arguments

---
 pc.y        | 2 ++
 sem_check.c | 6 ++++--
 sem_check.h | 2 ++
 tree.c      | 1 +
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/pc.y b/pc.y
index 8d142a2..c144043 100644
--- a/pc.y
+++ b/pc.y
@@ -270,6 +270,7 @@ statement
 	|proc_statement
 	{
 		$$ = $1;
+		check_call($$);
 	}
 	|compound_statement
 	{
@@ -346,6 +347,7 @@ proc_statement
 		tmp = check_exists(cur_scope, $1);
 		$$ = mktree(PCALL, mkid(tmp), $3);
 	}
+	/*calls checked with proc_statement*/
 ;
 
 expr_list
diff --git a/sem_check.c b/sem_check.c
index f6e412a..af97507 100644
--- a/sem_check.c
+++ b/sem_check.c
@@ -183,10 +183,12 @@ ptree *t;
 {
 	int argc, *argv;
 
-	print_tree(t);
-	if (!(t && t->attr.nval && t->attr.nval->func_info))
+	if (!(t && (t->type == FCALL || t->type == PCALL)))
 		yyerror("Tree is not a function call\n");
 
+	if (!(t->l && t->l->attr.nval && t->l->attr.nval->func_info))
+		yyerror("Incorrect Call Tree\n");
+
 	argc = t->l->attr.nval->func_info->argc;
 	if (t->l->attr.nval->func_info->argc != count_args(t->r))
 		/*TODO add info about expected argument count*/
diff --git a/sem_check.h b/sem_check.h
index ce7d7fb..0da2cc9 100644
--- a/sem_check.h
+++ b/sem_check.h
@@ -10,4 +10,6 @@ node* check_exists(scope*, char*);
 
 int check_ret_type(ptree*);
 
+void check_call(ptree*);
+
 #endif
diff --git a/tree.c b/tree.c
index a1a3f0f..b30fa35 100644
--- a/tree.c
+++ b/tree.c
@@ -22,6 +22,7 @@ ptree *l, *r;
 	t->l = l;
 	t->r = r;
 	t->ret_type = 0;
+	t->attr.nval = 0;
 
 	return t;
 }
-- 
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