Add payable modifier for contracts and entrypoints

test/aeso_calldata_tests.erl

@@ -123,7 +123,8 @@ compilable_contracts() ->
      {"bitcoin_auth", "authorize", ["1", "#0102030405060708090a0b0c0d0e0f101718192021222324252627282930313233343536373839401a1b1c1d1e1f202122232425262728293031323334353637"]},
      {"bitcoin_auth", "to_sign", ["#0102030405060708090a0b0c0d0e0f1017181920212223242526272829303132", "2"]},
      {"stub", "foo", ["42"]},
-     {"stub", "foo", ["-42"]}
+     {"stub", "foo", ["-42"]},
+     {"payable", "foo", ["42"]}
     ].
 
 not_yet_compilable(fate) ->

test/aeso_compiler_tests.erl

@@ -125,7 +125,8 @@ compilable_contracts() ->
      "stdlib_include",
      "double_include",
      "manual_stdlib_include",
-     "list_comp"
+     "list_comp",
+     "payable"
     ].
 
 not_yet_compilable(fate) -> [];

test/contracts/payable.aes

@@ -0,0 +1,3 @@
+payable contract Test =
+  payable entrypoint foo(x : int) = ()
+  function bar() = 42