This change:
- Removes the need to create synthesized nodes for the default constructor.
- Treats the default constructor and forwarding constructors in mixins uniformaly: they both are synthesized constructors that call a super constructor.
- Makes the compiler aware that some elements may not have nodes, and acts accordingly. Before, the default constructor had a synthesized node, so the compiler was happy with it. And the forwarding constructors were handled specially to just skip to a non-synthesized constructor. The latter behavior was the cause of issue 11822, and type inference problems.
- Makes the resolver implement what is specified in the specification for forwarding constructors: we create one synthesized constructor per generative constructor of the super class.
- Implements forwarding constructor in named (aka typedef) mixin applications. See builder.dart, and mixin_typedef_constructor_test.dart
- Implements const classes in the presence of mixins: tests/language/const_constructor_mixin_test.dart.
- Fixes type inference in the presence of forwarding constructors: tests/language/inference_mixin_field_test.dart.
R=ahe@google.com, karlklose@google.com
Review URL: https://codereview.chromium.org//19754002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@25148 260f80e4-7a28-3924-810f-c04153c831b5
ngeoffray@google.com
6d7b2a169e
