Previously, trying to access a static member of a class using '?.' was
not allowed. But the spec was changed in
b11670f899 so that
'ClassName?.staticMember' is now equivalent to
'ClassName.staticMember'.
This CL updates analyzer to follow the spec, and updates the tests in
"tests/language" accordingly. VM and dart2js still need fixing
(see #23794 and #23795).
Fixes#23464.
R=scheglov@google.com
Review URL: https://codereview.chromium.org//1255293005 .
If 'p' is an import prefix, then 'p = ...' is treated as synonymous
with 'this.p = ...', and 'p()' is treated as synonymous with
'this.p()'. In all other circumstances where 'p' is not followed by
'.', the spec calls for a compile time error.
Previous to this CL, 'p' not followed by '.' was being treated as
synonymous with 'this.p' under all circumstances. This CL brings
analyzer in line with the spec, and updates the tests in
tests/language accordingly.
The VM and Dart2js currently fail to implement the compile-time error
properly. See issues #23611 and #23612.
Fixes issue #23461.
R=scheglov@google.com
Review URL: https://codereview.chromium.org//1173523002.
This CL adds the implementation of all null-aware operators to dart2js. In
particular:
* a?.b: represented as 'isConditional' in the Send ast, and dispatched
separately by the semantic visitor using visitIfNotNull* methods.
* a ?? b: represented as an operator, and dispatched separately by the semantic
visitor using the `visitIfNull` method.
* a ??= b: represented as a compound operator.
All except 2 tests are passing with the SSA backend (those 2 tests fail for
unrelated reasons). I've marked the CPS ir tests as failing for now.
BUG=
R=johnniwinther@google.com, paulberry@google.com, sra@google.com
Review URL: https://codereview.chromium.org//1151163004
Paul Berry