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author | Eugene Burmako <xeno.by@gmail.com> | 2013-07-21 23:34:53 -0700 |
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committer | Eugene Burmako <xeno.by@gmail.com> | 2013-07-21 23:34:53 -0700 |
commit | fc4b464faeb43c3e2917b11a95c4f84481c443f7 (patch) | |
tree | 2e105d3a0c3374875bede127dd6afaf7a1c88715 /test | |
parent | 2247593472031fd9712b652bab0b978a788e46ef (diff) | |
parent | ef979c02da887b7c56bc1da9c4eb888e92af570f (diff) | |
download | scala-fc4b464faeb43c3e2917b11a95c4f84481c443f7.tar.gz scala-fc4b464faeb43c3e2917b11a95c4f84481c443f7.tar.bz2 scala-fc4b464faeb43c3e2917b11a95c4f84481c443f7.zip |
Merge pull request #2730 from scalamacros/ticket/7657
SI-7657 clarifies the "macro overrides method" rule
Diffstat (limited to 'test')
6 files changed, 38 insertions, 18 deletions
diff --git a/test/files/neg/macro-override-macro-overrides-abstract-method-b.check b/test/files/neg/macro-override-macro-overrides-abstract-method-b.check index 895e0dca50..cde3dbdbe8 100644 --- a/test/files/neg/macro-override-macro-overrides-abstract-method-b.check +++ b/test/files/neg/macro-override-macro-overrides-abstract-method-b.check @@ -1,5 +1,11 @@ -Impls_Macros_1.scala:12: error: overriding method foo in trait Foo of type (x: Int)Int; - macro method foo cannot override an abstract method - def foo(x: Int) = macro Impls.impl - ^ -one error found +Test_2.scala:3: error: anonymous class $anon inherits conflicting members: + macro method t in trait C of type ()Unit and + method t in trait A of type ()Unit +(Note: this can be resolved by declaring an override in anonymous class $anon.) + val c2 = new C with A {} + ^ +Test_2.scala:5: error: overriding macro method t in trait C of type ()Unit; + method t cannot override a macro + val c4 = new C with A { override def t(): Unit = () } + ^ +two errors found diff --git a/test/files/neg/macro-override-macro-overrides-abstract-method-b/Impls_Macros_1.scala b/test/files/neg/macro-override-macro-overrides-abstract-method-b/Impls_Macros_1.scala index e43264f52f..f5b2555aa5 100644 --- a/test/files/neg/macro-override-macro-overrides-abstract-method-b/Impls_Macros_1.scala +++ b/test/files/neg/macro-override-macro-overrides-abstract-method-b/Impls_Macros_1.scala @@ -1,13 +1,8 @@ -import scala.reflect.macros.{Context => Ctx} +import scala.reflect.macros.Context +import language.experimental.macros -object Impls { - def impl(c: Ctx)(x: c.Expr[Int]) = x -} +trait T { def t(): Unit } +trait A { def t(): Unit = () } -trait Foo { - def foo(x: Int): Int -} - -object Macros extends Foo { - def foo(x: Int) = macro Impls.impl -} +object Macro { def t(c: Context)(): c.Expr[Unit] = c.universe.reify(()) } +trait C extends T { self: A => override def t(): Unit = macro Macro.t } diff --git a/test/files/neg/macro-override-macro-overrides-abstract-method-b/Test_2.scala b/test/files/neg/macro-override-macro-overrides-abstract-method-b/Test_2.scala index 08fff30baf..9b4c8e35f0 100644 --- a/test/files/neg/macro-override-macro-overrides-abstract-method-b/Test_2.scala +++ b/test/files/neg/macro-override-macro-overrides-abstract-method-b/Test_2.scala @@ -1,4 +1,6 @@ object Test extends App { - val designator: Foo = Macros - designator.foo(42) + val c1 = new A with C {} + val c2 = new C with A {} + val c3 = new C with A { override def t(): Unit = macro Macro.t } + val c4 = new C with A { override def t(): Unit = () } }
\ No newline at end of file diff --git a/test/files/run/t7657.check b/test/files/run/t7657.check new file mode 100644 index 0000000000..c25d8d1c1b --- /dev/null +++ b/test/files/run/t7657.check @@ -0,0 +1,3 @@ +() +() +() diff --git a/test/files/run/t7657/Macros_1.scala b/test/files/run/t7657/Macros_1.scala new file mode 100644 index 0000000000..b1e31aa2dd --- /dev/null +++ b/test/files/run/t7657/Macros_1.scala @@ -0,0 +1,8 @@ +import scala.reflect.macros.Context +import language.experimental.macros + +trait T { def t(): Unit } +abstract class A extends T { override def t(): Unit = () } + +object Macro { def t(c: Context)(): c.Expr[Unit] = c.universe.reify(()) } +class C extends A { override def t(): Unit = macro Macro.t } diff --git a/test/files/run/t7657/Test_2.scala b/test/files/run/t7657/Test_2.scala new file mode 100644 index 0000000000..5cc46b6aa1 --- /dev/null +++ b/test/files/run/t7657/Test_2.scala @@ -0,0 +1,6 @@ +object Test extends App { + val c = new C() + println(c.t()) + println((c: T).t()) + println((c: A).t()) +}
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