Made contracts aggregate from types etc

test/test_suite/any/casting_voidptr_to_any.c3

@@ -1,26 +1,30 @@
 module mylib::ifaces;
-interface IOp {
-    fn void op();
+interface IOp
+{
+	fn void op();
 }
 module mylib{Type};
 import std::io;
 import mylib::ifaces;
-struct Op (IOp){
-    Type data;
+struct Op (IOp)
+{
+	Type data;
 }
 fn void Op.op(&self) @dynamic => io::printn("op");
 module myapp;
 import mylib;
-fn void test(void* tptr){
-    // this work
-    IOp iop = (Op{int}*)tptr;
-    iop.op();
+fn void test(void* tptr)
+{
+	// this work
+	IOp iop = (Op{int}*)tptr;
+	iop.op();
 
-    // this don't work
-    iop = tptr; // #error: Casting a 'void*' to 'IOp' is not permitted
-    iop.op();
+	// this don't work
+	iop = tptr; // #error: Casting a 'void*' to 'IOp' is not permitted
+	iop.op();
 }
-fn void main(String[] args) {
-    Op{int}* t = mem::new(Op{int}, {.data = 1});
-    test(&t);
+fn void main(String[] args)
+{
+	Op{int}* t = mem::new(Op{int}, {.data = 1});
+	test(&t);
 }

test/test_suite/generic/generic_contract_aggregation.c3

@@ -0,0 +1,13 @@
+import std::io;
+
+<* @require Type.kindof == SIGNED_INT *>
+struct Foo @generic(Type)
+{
+	Type a;
+}
+
+fn int main()
+{
+	Foo{double} d; // #error:  Parameter(s) failed validation: @require "Type.kindof == SIGNED_INT"
+	return 0;
+}