3 files changed, 18 insertions, 5 deletions
diff --git a/code/main.felan b/code/main.felan
index e91185a..5ac54dd 100644
--- a/code/main.felan
+++ b/code/main.felan
@@ -6,9 +6,13 @@ float :: f32;
 double :: f64;
 
 main :: () -> void {
-  a : int = 2;
-  if a == 2
-    print_u64 1;
-  else
-    print_u64 0;
+  a :u64= 2;
+  f :: ()->void{
+    print_u64 a;
+  };
+  foo(f);
+};
+
+foo :: (fun:()->void)->void{
+  // fun();
 };
diff --git a/src/compiler/ast-tree.c b/src/compiler/ast-tree.c
index 2f9c27c..a0bc974 100644
--- a/src/compiler/ast-tree.c
+++ b/src/compiler/ast-tree.c
@@ -2103,6 +2103,10 @@ AstTreeFunction *getFunction(AstTree *value) {
   UNREACHABLE;
 }
 
+bool isFunction(AstTree *value) {
+  return value->type->token == AST_TREE_TOKEN_TYPE_FUNCTION;
+}
+
 bool isConst(AstTree *tree, AstTreeHelper *helper) {
   switch (tree->token) {
   case AST_TREE_TOKEN_TYPE_TYPE:
@@ -2954,6 +2958,10 @@ bool setTypesFunctionCall(AstTree *tree, AstTreeSetTypesHelper helper) {
 
   if (!setAllTypes(metadata->function, helper, NULL)) {
     return false;
+  } else if (!isFunction(metadata->function)) {
+    printError(metadata->function->str_begin, metadata->function->str_end,
+               "Object is not a function");
+    return false;
   }
 
   AstTreeFunction *function = getFunction(metadata->function);
diff --git a/src/compiler/ast-tree.h b/src/compiler/ast-tree.h
index d6c2523..e12daec 100644
--- a/src/compiler/ast-tree.h
+++ b/src/compiler/ast-tree.h
@@ -235,6 +235,7 @@ AstTree *astTreeParseCurlyBracket(ParserNode *parserNode,
 AstTree *astTreeParseParenthesis(ParserNode *parserNode, AstTreeHelper *helper);
 
 AstTreeFunction *getFunction(AstTree *value);
+bool isFunction(AstTree *value);
 bool isConst(AstTree *tree, AstTreeHelper *helper);
 AstTree *makeTypeOf(AstTree *value);
 bool typeIsEqual(const AstTree *type0, const AstTree *type1);