Correct return types for async function expresssions.

Correct return types for async function expresssions.

[gbracha, 2015-02-05 23:25:11]

gbracha@google.com changed reviewers:
+ paulberry@google.com

[Paul Berry, 2015-02-05 23:35:35]

lgtm, however you might want to consider:

- Including a reference to the section in which flatten is defined (as you do
when you refer to it in the "Return" section).

- Moving the definition of flatten to the "Function Expressions" section, so
that it is defined where it is first used.

[gbracha, 2015-02-05 23:39:52]

New patchsets have been uploaded after l-g-t-m from paulberry@google.com

[gbracha, 2015-02-05 23:41:25]

On 2015/02/05 23:35:35, Paul Berry wrote:
> lgtm, however you might want to consider:
> 
> - Including a reference to the section in which flatten is defined (as you do
> when you refer to it in the "Return" section).
> 
> - Moving the definition of flatten to the "Function Expressions" section, so
> that it is defined where it is first used.

Done.

[Paul Berry, 2015-02-05 23:56:07]

lgtm with one minor nit.

https://codereview.chromium.org/902703003/diff/40001/docs/language/dartLangSp...
File docs/language/dartLangSpec.tex (right):

https://codereview.chromium.org/902703003/diff/40001/docs/language/dartLangSp...
docs/language/dartLangSpec.tex:5742: It is a static type warning if the body of
$f$ is marked \ASYNC{} and the type \code{Future$<$flatten(T)$>$}
(\ref{awaitExpressions}) may not be assigned to the declared return type of $f$.
  Otherwise, it is a static type warning if $T$ may not be assigned to the
declared return type of $f$.
This reference needs to be updated to point to \ref{functionExpressions}.