Under certain conditions front-end currently generates as{TypeError}
type checks in constant expressions. Support evaluating these type
checks as constant expressions instead of rejecting them.
Change-Id: Id432c4c5062d7bab89c29fef308b42b2cbd64de8
Reviewed-on: https://dart-review.googlesource.com/41761
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Previously, importing a nonexisting "dart:" uri resulted in a crash in
fasta. This CL introduces a test and fixes the problem.
Fixes#31172.
Change-Id: I61b2668466f2567e5e5dcaff3203f0c5ee9a885f
Reviewed-on: https://dart-review.googlesource.com/36401
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
It's no longer necessary to guard against $runtime != none in most
cases because running test.py with --runtime=none will treat runtime
failure expectations as Pass.
Change-Id: Ieaff9957ad951066d93a3303af5499c7655d67a6
Reviewed-on: https://dart-review.googlesource.com/41567
Commit-Queue: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
This gets DDC and DDK to handle the block body of functions/methods in a
similar way, eliminating it from the JS if it is not necessary, and fixes
a bug in DDC for cases where we do need to emit a nested block scope.
Change-Id: I37d3d69bfcf9b1204385cca7785601fb7d6edfc3
Reviewed-on: https://dart-review.googlesource.com/41565
Reviewed-by: Vijay Menon <vsm@google.com>
Commit-Queue: Jenny Messerly <jmesserly@google.com>
Original description:
Change front_end handling of callable classes.
This CL is the first in a series of CLs to change the handling of
callable classes in Dart 2.0.
For purposes of this description, a "callable class" is a class whose
interface contains a `.call` method.
In Dart 1.0, a callable class was considered to be a subtype of the
`.call` method's function type. This allowed the user to create
custom objects with similar behavior to closures, but with additional
fields and methods.
In Dart 2.0, a callable class is just an ordinary class, with no
subtype relation to any particular function type. (Note however that
it is still permissible for a class to declare that it "implements
Function").
To reduce the amount of code broken by this change, a piece of
syntactic sugar is being added: if an expression whose static type is
a callable class appears where a function type is expected, an
implicit tear-off of the `.call` method is inserted.
Note that it is still possible at compile time to invoke an expression
whose static type is a callable class, and it is still possible at
runtime to invoke an expression whose runtime type is a callable
class; in both cases, this is considered an implicit invocation of the
class's `.call` method. This is unchanged from Dart 1.0 behavior.
This CL introduces test cases for the new behavior, and implements the
implicit tear-off of `.call` in the front end.
Still to be implemented in future CLs:
- Spec text needs to be written.
- DDC/analyzer code needs to be written to perform implicit tear-offs
of `.call`.
- The subtyping algorithm in DDC, analyzer, VM, and dart2js needs to
be changed so that callable classes are no longer considered
subtypes of any particular function type.
- A small corner case involving type parameters still needs to be
addressed (see TODO in
pkg/front_end/lib/src/fasta/type_inference/type_inferrer.dart).
Fixes#32064.
Change-Id: I0d397c608321e25ba42cc02aa8a516aa77aa7c9d
Reviewed-on: https://dart-review.googlesource.com/41280
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
Non-strong semantics are no longer supported in the analyzer. Testing
the old (non-strong) co19 suite with the analyzer just leads to
unnecessary status file churn.
Change-Id: I490dd9fee9a7916184c09c27883f8e7c1df5486c
Reviewed-on: https://dart-review.googlesource.com/41201
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
This reverts commit f0a6330db0.
Reason for revert: Broken bots
Original change's description:
> Change front_end handling of callable classes.
>
> This CL is the first in a series of CLs to change the handling of
> callable classes in Dart 2.0.
>
> For purposes of this description, a "callable class" is a class whose
> interface contains a `.call` method.
>
> In Dart 1.0, a callable class was considered to be a subtype of the
> `.call` method's function type. This allowed the user to create
> custom objects with similar behavior to closures, but with additional
> fields and methods.
>
> In Dart 2.0, a callable class is just an ordinary class, with no
> subtype relation to any particular function type. (Note however that
> it is still permissible for a class to declare that it "implements
> Function").
>
> To reduce the amount of code broken by this change, a piece of
> syntactic sugar is being added: if an expression whose static type is
> a callable class appears where a function type is expected, an
> implicit tear-off of the `.call` method is inserted.
>
> Note that it is still possible at compile time to invoke an expression
> whose static type is a callable class, and it is still possible at
> runtime to invoke an expression whose runtime type is a callable
> class; in both cases, this is considered an implicit invocation of the
> class's `.call` method. This is unchanged from Dart 1.0 behavior.
>
> This CL introduces test cases for the new behavior, and implements the
> implicit tear-off of `.call` in the front end.
>
> Still to be implemented in future CLs:
>
> - Spec text needs to be written.
>
> - DDC/analyzer code needs to be written to perform implicit tear-offs
> of `.call`.
>
> - The subtyping algorithm in DDC, analyzer, VM, and dart2js needs to
> be changed so that callable classes are no longer considered
> subtypes of any particular function type.
>
> - A small corner case involving type parameters still needs to be
> addressed (see TODO in
> pkg/front_end/lib/src/fasta/type_inference/type_inferrer.dart).
>
> Fixes#32064.
>
> Change-Id: I6a86491047ae467a5e767cb3cc7cecb570b29308
> Reviewed-on: https://dart-review.googlesource.com/40508
> Commit-Queue: Paul Berry <paulberry@google.com>
> Reviewed-by: Kevin Millikin <kmillikin@google.com>
> Reviewed-by: Leaf Petersen <leafp@google.com>
> Reviewed-by: Erik Ernst <eernst@google.com>
TBR=paulberry@google.com,lrn@google.com,leafp@google.com,dmitryas@google.com,eernst@google.com,kmillikin@google.com
Change-Id: Ia3d3a6e46ceee2b2c55938bec95d09d50bbf06a7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/41240
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
(was reverted in https://dart-review.googlesource.com/c/sdk/+/40980
due to an analyzer bot breakage)
Original commit message:
Implement proper checking for callability of Function class.
There was some old (incorrect) logic for doing this, behind the flag
enableStrictCallChecks. This flag has been removed, since the new
behavior is now standard in Dart 2.0.
Fixes#31509
Change-Id: Ice5cf38bbc648badf7f2563ff930b69f9a799635
Reviewed-on: https://dart-review.googlesource.com/41120
Reviewed-by: Jonas Termansen <sortie@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
This CL is the first in a series of CLs to change the handling of
callable classes in Dart 2.0.
For purposes of this description, a "callable class" is a class whose
interface contains a `.call` method.
In Dart 1.0, a callable class was considered to be a subtype of the
`.call` method's function type. This allowed the user to create
custom objects with similar behavior to closures, but with additional
fields and methods.
In Dart 2.0, a callable class is just an ordinary class, with no
subtype relation to any particular function type. (Note however that
it is still permissible for a class to declare that it "implements
Function").
To reduce the amount of code broken by this change, a piece of
syntactic sugar is being added: if an expression whose static type is
a callable class appears where a function type is expected, an
implicit tear-off of the `.call` method is inserted.
Note that it is still possible at compile time to invoke an expression
whose static type is a callable class, and it is still possible at
runtime to invoke an expression whose runtime type is a callable
class; in both cases, this is considered an implicit invocation of the
class's `.call` method. This is unchanged from Dart 1.0 behavior.
This CL introduces test cases for the new behavior, and implements the
implicit tear-off of `.call` in the front end.
Still to be implemented in future CLs:
- Spec text needs to be written.
- DDC/analyzer code needs to be written to perform implicit tear-offs
of `.call`.
- The subtyping algorithm in DDC, analyzer, VM, and dart2js needs to
be changed so that callable classes are no longer considered
subtypes of any particular function type.
- A small corner case involving type parameters still needs to be
addressed (see TODO in
pkg/front_end/lib/src/fasta/type_inference/type_inferrer.dart).
Fixes#32064.
Change-Id: I6a86491047ae467a5e767cb3cc7cecb570b29308
Reviewed-on: https://dart-review.googlesource.com/40508
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
This change adds most of Dart 2 subtype checking to js_runtime.
The main observable change is the stronger subtyping of function types.
The subtype code is split into V1 and V2 methods with the intention to
eventually remove the V1 paths.
There is a lot of minor details that are still TODO:
- TODO: generalized void
- TODO: comparison on type variable by it's bound
- TODO: FutureOr
Change-Id: Id05db0aef5ce0d58416a72f1538a90ed67436b3e
Reviewed-on: https://dart-review.googlesource.com/37960
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
On Fuchsia, we need external typed data arrays that are backed by
read-only regions of memory. Today, writes to these typed data
lists crash the process. This change allows us to wrap the
external typed data in unmodifiable views so that an exception
is thrown instead of crashing.
related #32028
Change-Id: I94dc5e1771b73480cb0eb21799215c090000fd5f
Reviewed-on: https://dart-review.googlesource.com/40201
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
Slightly alter async/await transformation in such a way that
:await_jump_var/:await_ctx_var are set before _awaitHelper(...) is invoked -
just like in the AST transformer used by the legacy pipeline. This guarantees
that recursive invocations will continue from the right "jump" point (instead of
continuing from the current jump point).
Fixes https://github.com/dart-lang/sdk/issues/32098
Change-Id: I8899669ceefe3f2edba6531897834b2c275efada
Reviewed-on: https://dart-review.googlesource.com/40520
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
Vyacheslav Egorov