Add higher-order-functions and some other goodies

  * The reads clause now needs to be self framing.

  * The requires clause now needs to be framed by the reads clause.

  * There are one-shot lambdas, with a single arrow, but they will probably be
    removed.

  * There is a {:heapQuantifier} attribute to quantifiers, but they will
    probably be removed.

  * Add smart handling of type variables

  * Add < and > for datatype & type parameter

1 files changed, 23 insertions, 0 deletions

diff --git a/Test/hofs/Field.dfy b/Test/hofs/Field.dfy
new file mode 100644
index 00000000..6d3412d7
--- /dev/null
+++ b/Test/hofs/Field.dfy
@@ -0,0 +1,23 @@
+// RUN: %dafny /compile:0 "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+// calling fields should not make a resolution error:
+
+class Ref<A> {
+  var val: A;
+}
+
+method Nope() {
+  var f := new Ref<int -> bool>;
+  assert f.val(0);
+}
+
+class FnRef<A,B> {
+  var fn: A -> B;
+}
+
+method Nope2() {
+  var f := new FnRef<int,bool>;
+  assert f.fn(0);
+}
+