dart-sdk/tests/language/cascade_test.dart
Erik Ernst 40b6741778 Adds support for syntax error in tests to test.py.
This CL modifies the Dart source used from test.py such that it takes
`syntax error` into account as an expected outcome in test files (so
that we can have `//# 01: syntax error` with a similar meaning as
`//# 01: compile-time error`).

For all tools except the spec_parser, `syntax error` is the same
outcome as `compile-time error`; that is, nobody else will see the
difference.

For the spec_parser, `syntax error` is the outcome where parsing has
failed; `compile-time error` is taken to mean some other compile-time
error, i.e., the spec_parser is expected to _succeed_ when the
expected outcome is `compile-time error`.

Test files in language and language_2 have been adjusted to use the
outcome `syntax error` where appropriate.

The status files in language and language_2 for the spec_parser have
been adjusted such that they fit all the new `syntax error` outcomes
in test files.

Other status files have been adjusted in a few cases where tests were
corrected (because a compile-time error which was clearly not intended
to be a syntax error turned out to be caused by a typo, which means
that the actual compile-time error has never been tested).

The spec grammar Dart.g was adjusted in a few cases, when some bugs
were discovered. In particular, the treatment of Function has been
changed: It is now known by the parser that Function does not take
any type arguments. This makes no difference for developers, because
they cannot declare a type named Function anyway, but it means that
a number of tricky parsing issues were resolved.

Dart.g was also adjusted to allow `qualified` to contain three
identifiers, which is an old bug (preventing things like metadata on
the form `@p.C.myConst`).

Change-Id: Ie420887d45c882ef97c84143365219f8aa0d2933
Reviewed-on: https://dart-review.googlesource.com/18262
Commit-Queue: Erik Ernst <eernst@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
2017-11-06 08:56:09 +00:00

89 lines
1.4 KiB
Dart

// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import "package:expect/expect.dart";
// Test cascades.
class A {
int x;
int y;
A(this.x, this.y);
A setX(int x) {
this.x = x;
return this;
}
void setY(int y) {
this.y = y;
}
Function swap() {
int tmp = x;
x = y;
y = tmp;
return this.swap;
}
void check(int x, int y) {
Expect.equals(x, this.x);
Expect.equals(y, this.y);
}
operator [](var i) {
if (i == 0) return x;
if (i == 1) return y;
if (i == "swap") return this.swap;
return null;
}
int operator []=(int i, int value) {
if (i == 0) {
x = value;
} else if (i == 1) {
y = value;
}
}
/**
* A pseudo-keyword.
*/
import() {
x++;
}
}
main() {
A a = new A(1, 2);
a
..check(1, 2)
..swap()
..check(2, 1)
..x = 4
..y = 9
..check(4, 9)
..setX(10)
..check(10, 9)
..y = 5
..check(10, 5)
..swap()()()
..check(5, 10)
..[0] = 2
..check(2, 10)
..setX(10).setY(3)
..check(10, 3)
..setX(7)["swap"]()
..check(3, 7)
..import()
..check(4, 7)
..["swap"]()()()
..check(7, 4);
a.check(7, 4);
a..(42); // //# 01: syntax error
a..37; // //# 02: syntax error
a.."foo"; // //# 03: syntax error
}