A minor fix to -Yreify-copypaste. #28
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Empty modifiers are now correctly printed out as "Modifiers()" instead of
annoyingly verbose "Modifiers(Set(), newTermName(""), List())".
No review.
gkossakowski
added a commit
to gkossakowski/scala
that referenced
this pull request
Jan 11, 2012
Merge latest changes from trunk upstream
retronym
referenced
this pull request
in retronym/scala
Nov 6, 2014
In Scala 2.8.2, an optimization was added to create a static
cache for Symbol literals (ie, the results of `Symbol.apply("foo"))`.
This saves the map lookup on the second pass through code.
This actually was broken somewhere during the Scala 2.10 series,
after the addition of an overloaded `apply` method to `Symbol`.
The cache synthesis code was made aware of the overload and brought
back to working condition recently, in scala#3149.
However, this has uncovered a latent bug when the Symbol literals are
defined with traits.
One of the enclosed tests failed with:
jvm > t8933b-run.log
java.lang.IllegalAccessError: tried to access field MotherClass.symbol$1 from class MixinWithSymbol$class
at MixinWithSymbol$class.symbolFromTrait(A.scala:3)
at MotherClass.symbolFromTrait(Test.scala:1)
This commit simply disables the optimization if we are in a trait.
Alternative fixes might be: a) make the static Symbol cache field
public / b) "mixin" the static symbol cache. Neither of these
seem worth the effort and risk for an already fairly situational
optimization.
Here's how the optimization looks in a class:
% cat sandbox/test.scala; qscalac sandbox/test.scala && echo ":javap C" | qscala;
class C {
'a; 'b
}
Welcome to Scala version 2.11.5-20141106-145558-aa558dce6d (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_20).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :javap C
Size 722 bytes
MD5 checksum 6bb00189166917254e8d40499ee7c887
Compiled from "test.scala"
public class C
{
public static {};
descriptor: ()V
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=0, args_size=0
0: getstatic #16 // Field scala/Symbol$.MODULE$:Lscala/Symbol$;
3: ldc #18 // String a
5: invokevirtual #22 // Method scala/Symbol$.apply:(Ljava/lang/String;)Lscala/Symbol;
8: putstatic #26 // Field symbol$1:Lscala/Symbol;
11: getstatic #16 // Field scala/Symbol$.MODULE$:Lscala/Symbol$;
14: ldc #28 // String b
16: invokevirtual #22 // Method scala/Symbol$.apply:(Ljava/lang/String;)Lscala/Symbol;
19: putstatic #31 // Field symbol$2:Lscala/Symbol;
22: return
public C();
descriptor: ()V
flags: ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #34 // Method java/lang/Object."<init>":()V
4: getstatic #26 // Field symbol$1:Lscala/Symbol;
7: pop
8: getstatic #31 // Field symbol$2:Lscala/Symbol;
11: pop
12: return
}
retronym
referenced
this pull request
in retronym/scala
Nov 6, 2014
In Scala 2.8.2, an optimization was added to create a static
cache for Symbol literals (ie, the results of `Symbol.apply("foo"))`.
This saves the map lookup on the second pass through code.
This actually was broken somewhere during the Scala 2.10 series,
after the addition of an overloaded `apply` method to `Symbol`.
The cache synthesis code was made aware of the overload and brought
back to working condition recently, in scala#3419.
However, this has uncovered a latent bug when the Symbol literals are
defined with traits.
One of the enclosed tests failed with:
jvm > t8933b-run.log
java.lang.IllegalAccessError: tried to access field MotherClass.symbol$1 from class MixinWithSymbol$class
at MixinWithSymbol$class.symbolFromTrait(A.scala:3)
at MotherClass.symbolFromTrait(Test.scala:1)
This commit simply disables the optimization if we are in a trait.
Alternative fixes might be: a) make the static Symbol cache field
public / b) "mixin" the static symbol cache. Neither of these
seem worth the effort and risk for an already fairly situational
optimization.
Here's how the optimization looks in a class:
% cat sandbox/test.scala; qscalac sandbox/test.scala && echo ":javap C" | qscala;
class C {
'a; 'b
}
Welcome to Scala version 2.11.5-20141106-145558-aa558dce6d (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_20).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :javap C
Size 722 bytes
MD5 checksum 6bb00189166917254e8d40499ee7c887
Compiled from "test.scala"
public class C
{
public static {};
descriptor: ()V
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=0, args_size=0
0: getstatic #16 // Field scala/Symbol$.MODULE$:Lscala/Symbol$;
3: ldc #18 // String a
5: invokevirtual #22 // Method scala/Symbol$.apply:(Ljava/lang/String;)Lscala/Symbol;
8: putstatic #26 // Field symbol$1:Lscala/Symbol;
11: getstatic #16 // Field scala/Symbol$.MODULE$:Lscala/Symbol$;
14: ldc #28 // String b
16: invokevirtual #22 // Method scala/Symbol$.apply:(Ljava/lang/String;)Lscala/Symbol;
19: putstatic #31 // Field symbol$2:Lscala/Symbol;
22: return
public C();
descriptor: ()V
flags: ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #34 // Method java/lang/Object."<init>":()V
4: getstatic #26 // Field symbol$1:Lscala/Symbol;
7: pop
8: getstatic #31 // Field symbol$2:Lscala/Symbol;
11: pop
12: return
}
fixup
retronym
referenced
this pull request
in retronym/scala
Nov 7, 2014
In Scala 2.8.2, an optimization was added to create a static
cache for Symbol literals (ie, the results of `Symbol.apply("foo"))`.
This saves the map lookup on the second pass through code.
This actually was broken somewhere during the Scala 2.10 series,
after the addition of an overloaded `apply` method to `Symbol`.
The cache synthesis code was made aware of the overload and brought
back to working condition recently, in scala#3149.
However, this has uncovered a latent bug when the Symbol literals are
defined with traits.
One of the enclosed tests failed with:
jvm > t8933b-run.log
java.lang.IllegalAccessError: tried to access field MotherClass.symbol$1 from class MixinWithSymbol$class
at MixinWithSymbol$class.symbolFromTrait(A.scala:3)
at MotherClass.symbolFromTrait(Test.scala:1)
This commit simply disables the optimization if we are in a trait.
Alternative fixes might be: a) make the static Symbol cache field
public / b) "mixin" the static symbol cache. Neither of these
seem worth the effort and risk for an already fairly situational
optimization.
Here's how the optimization looks in a class:
% cat sandbox/test.scala; qscalac sandbox/test.scala && echo ":javap C" | qscala;
class C {
'a; 'b
}
Welcome to Scala version 2.11.5-20141106-145558-aa558dce6d (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_20).
Type in expressions to have them evaluated.
Type :help for more information.
scala> :javap C
Size 722 bytes
MD5 checksum 6bb00189166917254e8d40499ee7c887
Compiled from "test.scala"
public class C
{
public static {};
descriptor: ()V
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=0, args_size=0
0: getstatic #16 // Field scala/Symbol$.MODULE$:Lscala/Symbol$;
3: ldc #18 // String a
5: invokevirtual #22 // Method scala/Symbol$.apply:(Ljava/lang/String;)Lscala/Symbol;
8: putstatic #26 // Field symbol$1:Lscala/Symbol;
11: getstatic #16 // Field scala/Symbol$.MODULE$:Lscala/Symbol$;
14: ldc #28 // String b
16: invokevirtual #22 // Method scala/Symbol$.apply:(Ljava/lang/String;)Lscala/Symbol;
19: putstatic #31 // Field symbol$2:Lscala/Symbol;
22: return
public C();
descriptor: ()V
flags: ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #34 // Method java/lang/Object."<init>":()V
4: getstatic #26 // Field symbol$1:Lscala/Symbol;
7: pop
8: getstatic #31 // Field symbol$2:Lscala/Symbol;
11: pop
12: return
}
fixup
retronym
referenced
this pull request
in retronym/scala
May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 4, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 5, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 9, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 11, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 11, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 17, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 19, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 19, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 19, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1:
9E88
invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 25, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
Once we commit to this change, we can remove the
`lateInterfaces` bookkeeping from the backend, as we no
long will need to add ancestor interfaces as direct
parents to allow use of invokespecial for super calls.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] public void $init$();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #32 // Method $init$:(LT;)V
[info] 4: return
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 30, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 30, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 31, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
May 31, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 1, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Jun 6, 2016
And use this as the target of the default methods or
statically resolved super or $init calls.
The call-site change is predicated on `-Yuse-trait-statics`
as a stepping stone for experimentation / bootstrapping.
I have performed this transformation in the backend,
rather than trying to reflect this in the view from
Scala symbols + ASTs.
```
> ;scalac sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:13 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokespecial #17 // Method T.$init$:()V
[info] 8: getstatic #23 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #24 // String C
[info] 13: invokevirtual #28 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokespecial #32 // Method T.foo:()I
[info] 20: pop
[info] 21: return
[info] }
> ;scalac -Yuse-trait-statics sandbox/test.scala ; scala Test
[info] Running scala.tools.nsc.MainGenericRunner -usejavacp Test
T
C
[success] Total time: 2 s, completed 04/05/2016 11:07:39 AM
> eval "javap -classpath . -c -private C".!!
[info] ans: String = Compiled from "test.scala"
[info] public class C implements T {
[info] public C();
[info] Code:
[info] 0: aload_0
[info] 1: invokespecial #14 // Method java/lang/Object."<init>":()V
[info] 4: aload_0
[info] 5: invokestatic #18 // Method T.$init$:(LT;)V
[info] 8: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 11: ldc #25 // String C
[info] 13: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 16: aload_0
[info] 17: invokestatic #33 // Method T.foo:(LT;)I
[info] 20: pop
[info] 21: return
[info] }
> eval "javap -classpath . -c -private T".!!
[info] ans: String = Compiled from "test.scala"
[info] public interface T {
[info] public static int foo(T);
[info] Code:
[info] 0: iconst_0
[info] 1: ireturn
[info]
[info] public int foo();
[info] Code:
[info] 0: aload_0
[info] 1: invokestatic #15 // Method foo:(LT;)I
[info] 4: ireturn
[info]
[info] public static void $init$(T);
[info] Code:
[info] 0: getstatic #24 // Field scala/Predef$.MODULE$:Lscala/Predef$;
[info] 3: ldc #25 // String T
[info] 5: invokevirtual #29 // Method scala/Predef$.println:(Ljava/lang/Object;)V
[info] 8: return
[info]
[info] }
```
retronym
referenced
this pull request
in retronym/scala
Dec 12, 2016
VarHandles bring a host of new "polymorphic signature" methods to
the Java 9 standard library. This commit updates the way we detect
such methods to look at the absense/presense of the
`PolymorphicSignature` annotation, so as to include these (and any
future additions.)
When we see applications of such methods, we disable adaptation
of argument and return types.
Tested manually with JDK9-ea:
```
Welcome to Scala 2.12.2-20161208-165912-3de1c0c (Java HotSpot(TM) 64-Bit Server VM, Java 9-ea).
Type in expressions for evaluation. Or try :help.
scala> import java.lang.invoke._, scala.runtime.IntRef
import java.lang.invoke._
import scala.runtime.IntRef
scala> val varHandle = MethodHandles.lookup().in(classOf[IntRef]).findVarHandle(classOf[IntRef], "elem", classOf[Int]);
varHandle: java.lang.invoke.VarHandle = java.lang.invoke.VarHandleInts$FieldInstanceReadWrite@7112ce6
scala> varHandle.getAndSet(ref, 1): Int
res5: Int = 0
scala> varHandle.getAndSet(ref, 1): Int
res6: Int = 1
```
Inspecting bytecode shows the absense of box/unboxing:
```
object Test {
import java.lang.invoke._, scala.runtime.IntRef
val varHandle = MethodHandles.lookup().in(classOf[IntRef]).findVarHandle(classOf[IntRef], "elem", classOf[Int]);
def main(args: Array[String]): Unit = {
val i : Int = varHandle.getAndSet(IntRef.zero, 1)
}
}
```
```
public void main(java.lang.String[]);
Code:
0: aload_0
1: invokevirtual #28 // Method varHandle:()Ljava/lang/invoke/VarHandle;
4: invokestatic #34 // Method scala/runtime/IntRef.zero:()Lscala/runtime/IntRef;
7: iconst_1
8: invokevirtual #40 // Method java/lang/invoke/VarHandle.getAndSet:(Lscala/runtime/IntRef;I)I
11: istore_2
12: return
```
retronym
referenced
this pull request
in retronym/scala
Dec 12, 2016
VarHandles bring a host of new "polymorphic signature" methods to
the Java 9 standard library. This commit updates the way we detect
such methods to look at the absense/presense of the
`PolymorphicSignature` annotation, so as to include these (and any
future additions.)
When we see applications of such methods, we disable adaptation
of argument and return types.
Tested manually with JDK9-ea:
```
Welcome to Scala 2.12.2-20161208-165912-3de1c0c (Java HotSpot(TM) 64-Bit Server VM, Java 9-ea).
Type in expressions for evaluation. Or try :help.
scala> import java.lang.invoke._, scala.runtime.IntRef
import java.lang.invoke._
import scala.runtime.IntRef
scala> val varHandle = MethodHandles.lookup().in(classOf[IntRef]).findVarHandle(classOf[IntRef], "elem", classOf[Int]);
varHandle: java.lang.invoke.VarHandle = java.lang.invoke.VarHandleInts$FieldInstanceReadWrite@7112ce6
scala> varHandle.getAndSet(ref, 1): Int
res5: Int = 0
scala> varHandle.getAndSet(ref, 1): Int
res6: Int = 1
```
Inspecting bytecode shows the absense of box/unboxing:
```
object Test {
import java.lang.invoke._, scala.runtime.IntRef
val varHandle = MethodHandles.lookup().in(classOf[IntRef]).findVarHandle(classOf[IntRef], "elem", classOf[Int]);
def main(args: Array[String]): Unit = {
val i : Int = varHandle.getAndSet(IntRef.zero, 1)
}
}
```
```
public void main(java.lang.String[]);
Code:
0: aload_0
1: invokevirtual #28 // Method varHandle:()Ljava/lang/invoke/VarHandle;
4: invokestatic #34 // Method scala/runtime/IntRef.zero:()Lscala/runtime/IntRef;
7: iconst_1
8: invokevirtual #40 // Method java/lang/invoke/VarHandle.getAndSet:(Lscala/runtime/IntRef;I)I
11: istore_2
12: return
```
retronym
referenced
this pull request
in retronym/scala
Dec 12, 2016
VarHandles bring a host of new "polymorphic signature" methods to
the Java 9 standard library. This commit updates the way we detect
such methods to look at the absense/presense of the
`PolymorphicSignature` annotation, so as to include these (and any
future additions.)
When we see applications of such methods, we disable adaptation
of argument and return types.
Tested manually with JDK9-ea:
```
Welcome to Scala 2.12.2-20161208-165912-3de1c0c (Java HotSpot(TM) 64-Bit Server VM, Java 9-ea).
Type in expressions for evaluation. Or try :help.
scala> import java.lang.invoke._, scala.runtime.IntRef
import java.lang.invoke._
import scala.runtime.IntRef
scala> val varHandle = MethodHandles.lookup().in(classOf[IntRef]).findVarHandle(classOf[IntRef], "elem", classOf[Int]);
varHandle: java.lang.invoke.VarHandle = java.lang.invoke.VarHandleInts$FieldInstanceReadWrite@7112ce6
scala> varHandle.getAndSet(ref, 1): Int
res5: Int = 0
scala> varHandle.getAndSet(ref, 1): Int
res6: Int = 1
```
Inspecting bytecode shows the absense of box/unboxing:
```
object Test {
import java.lang.invoke._, scala.runtime.IntRef
val varHandle = MethodHandles.lookup().in(classOf[IntRef]).findVarHandle(classOf[IntRef], "elem", classOf[Int]);
def main(args: Array[String]): Unit = {
val i : Int = varHandle.getAndSet(IntRef.zero, 1)
}
}
```
```
public void main(java.lang.String[]);
Code:
0: aload_0
1: invokevirtual #28 // Method varHandle:()Ljava/lang/invoke/VarHandle;
4: invokestatic #34 // Method scala/runtime/IntRef.zero:()Lscala/runtime/IntRef;
7: iconst_1
8: invokevirtual #40 // Method java/lang/invoke/VarHandle.getAndSet:(Lscala/runtime/IntRef;I)I
11: istore_2
12: return
```
retronym
referenced
this pull request
in retronym/scala
Apr 6, 2017
Non local returns aren't eliminated after inlined in 2.11 or 2.12
```
⚡ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inlune def foo(a: => Any) = if ("".isEmpty) a else ""
<console>:11: error: not found: type inlune
@inlune def foo(a: => Any) = if ("".isEmpty) a else ""
^
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #32 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #36 // Field $line4/$read$$iw$$iw$.MODULE$:L$line4/$read$$iw$$iw$;
11: aload_1
12: invokedynamic #59, 0 // InvokeDynamic #0:apply:(Ljava/lang/Object;)Lscala/Function0;
17: invokevirtual #63 // Method $line4/$read$$iw$$iw$.foo:(Lscala/Function0;)Ljava/lang/Object;
20: goto 44
23: astore_2
24: aload_2
25: invokevirtual #66 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
28: aload_1
29: if_acmpne 39
32: aload_2
33: invokevirtual #69 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
36: goto 41
39: aload_2
40: athrow
41: goto 44
44: areturn
Exception table:
from to target type
8 20 23 Class scala/runtime/NonLocalReturnControl
```
```
⚡ ~/scala/2.11.8/bin/scala
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #13 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #19 // Field .MODULE$:L;
11: new #21 // class InlineReturn$$anonfun$test$1
14: dup
15: aload_0
16: aload_1
17: invokespecial #24 // Method InlineReturn$$anonfun$test$1."<init>":(LInlineReturn;Ljava/lang/Object;)V
20: invokevirtual #28 // Method .foo:(Lscala/Function0;)Ljava/lang/Object;
23: goto 39
26: astore_2
27: aload_2
28: invokevirtual #31 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
31: aload_1
32: if_acmpne 40
35: aload_2
36: invokevirtual #34 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
39: areturn
40: aload_2
41: athrow
Exception table:
from to target type
8 26 26 Class scala/runtime/NonLocalReturnControl
scala> :quit
```
retronym
referenced
this pull request
in retronym/scala
Apr 23, 2017
Non local returns aren't eliminated after inlined in 2.11 or 2.12
```
⚡ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inlune def foo(a: => Any) = if ("".isEmpty) a else ""
<console>:11: error: not found: type inlune
@inlune def foo(a: => Any) = if ("".isEmpty) a else ""
^
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #32 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #36 // Field $line4/$read$$iw$$iw$.MODULE$:L$line4/$read$$iw$$iw$;
11: aload_1
12: invokedynamic #59, 0 // InvokeDynamic #0:apply:(Ljava/lang/Object;)Lscala/Function0;
17: invokevirtual #63 // Method $line4/$read$$iw$$iw$.foo:(Lscala/Function0;)Ljava/lang/Object;
20: goto 44
23: astore_2
24: aload_2
25: invokevirtual #66 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
28: aload_1
29: if_acmpne 39
32: aload_2
33: invokevirtual #69 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
36: goto 41
39: aload_2
40: athrow
41: goto 44
44: areturn
Exception table:
from to target type
8 20 23 Class scala/runtime/NonLocalReturnControl
```
```
⚡ ~/scala/2.11.8/bin/scala
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #13 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #19 // Field .MODULE$:L;
11: new #21 // class InlineReturn$$anonfun$test$1
14: dup
15: aload_0
16: aload_1
17: invokespecial #24 // Method InlineReturn$$anonfun$test$1."<init>":(LInlineReturn;Ljava/lang/Object;)V
20: invokevirtual #28 // Method .foo:(Lscala/Function0;)Ljava/lang/Object;
23: goto 39
26: astore_2
27: aload_2
28: invokevirtual #31 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
31: aload_1
32: if_acmpne 40
35: aload_2
36: invokevirtual #34 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
39: areturn
40: aload_2
41: athrow
Exception table:
from to target type
8 26 26 Class scala/runtime/NonLocalReturnControl
scala> :quit
```
retronym
referenced
this pull request
in retronym/scala
Apr 28, 2017
Non local returns aren't eliminated after inlined in 2.11 or 2.12
```
⚡ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inlune def foo(a: => Any) = if ("".isEmpty) a else ""
<console>:11: error: not found: type inlune
@inlune def foo(a: => Any) = if ("".isEmpty) a else ""
^
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #32 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #36 // Field $line4/$read$$iw$$iw$.MODULE$:L$line4/$read$$iw$$iw$;
11: aload_1
12: invokedynamic #59, 0 // InvokeDynamic #0:apply:(Ljava/lang/Object;)Lscala/Function0;
17: invokevirtual #63 // Method $line4/$read$$iw$$iw$.foo:(Lscala/Function0;)Ljava/lang/Object;
20: goto 44
23: astore_2
24: aload_2
25: invokevirtual #66 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
28: aload_1
29: if_acmpne 39
32: aload_2
33: invokevirtual #69 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
36: goto 41
39: aload_2
40: athrow
41: goto 44
44: areturn
Exception table:
from to target type
8 20 23 Class scala/runtime/NonLocalReturnControl
```
```
⚡ ~/scala/2.11.8/bin/scala
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #13 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #19 // Field .MODULE$:L;
11: new #21 // class InlineReturn$$anonfun$test$1
14: dup
15: aload_0
16: aload_1
17: invokespecial #24 // Method InlineReturn$$anonfun$test$1."<init>":(LInlineReturn;Ljava/lang/Object;)V
20: invokevirtual #28 // Method .foo:(Lscala/Function0;)Ljava/lang/Object;
23: goto 39
26: astore_2
27: aload_2
28: invokevirtual #31 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
31: aload_1
32: if_acmpne 40
35: aload_2
36: invokevirtual #34 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
39: areturn
40: aload_2
41: athrow
Exception table:
from to target type
8 26 26 Class scala/runtime/NonLocalReturnControl
scala> :quit
```
retronym
referenced
this pull request
in retronym/scala
Apr 29, 2017
Non local returns aren't eliminated after inlined in 2.11 or 2.12
```
⚡ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inlune def foo(a: => Any) = if ("".isEmpty) a else ""
<console>:11: error: not found: type inlune
@inlune def foo(a: => Any) = if ("".isEmpty) a else ""
^
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #32 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #36 // Field $line4/$read$$iw$$iw$.MODULE$:L$line4/$read$$iw$$iw$;
11: aload_1
12: invokedynamic #59, 0 // InvokeDynamic #0:apply:(Ljava/lang/Object;)Lscala/Function0;
17: invokevirtual #63 // Method $line4/$read$$iw$$iw$.foo:(Lscala/Function0;)Ljava/lang/Object;
20: goto 44
23: astore_2
24: aload_2
25: invokevirtual #66 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
28: aload_1
29: if_acmpne 39
32: aload_2
33: invokevirtual #69 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
36: goto 41
39: aload_2
40: athrow
41: goto 44
44: areturn
Exception table:
from to target type
8 20 23 Class scala/runtime/NonLocalReturnControl
```
```
⚡ ~/scala/2.11.8/bin/scala
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #13 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #19 // Field .MODULE$:L;
11: new #21 // class InlineReturn$$anonfun$test$1
14: dup
15: aload_0
16: aload_1
17: invokespecial #24 // Method InlineReturn$$anonfun$test$1."<init>":(LInlineReturn;Ljava/lang/Object;)V
20: invokevirtual #28 // Method .foo:(Lscala/Function0;)Ljava/lang/Object;
23: goto 39
26: astore_2
27: aload_2
28: invokevirtual #31 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
31: aload_1
32: if_acmpne 40
35: aload_2
36: invokevirtual #34 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
39: areturn
40: aload_2
41: athrow
Exception table:
from to target type
8 26 26 Class scala/runtime/NonLocalReturnControl
scala> :quit
```
retronym
referenced
this pull request
in retronym/scala
May 23, 2017
Non local returns aren't eliminated after inlined in 2.11 or 2.12
```
⚡ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inlune def foo(a: => Any) = if ("".isEmpty) a else ""
<console>:11: error: not found: type inlune
@inlune def foo(a: => Any) = if ("".isEmpty) a else ""
^
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #32 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #36 // Field $line4/$read$$iw$$iw$.MODULE$:L$line4/$read$$iw$$iw$;
11: aload_1
12: invokedynamic #59, 0 // InvokeDynamic #0:apply:(Ljava/lang/Object;)Lscala/Function0;
17: invokevirtual #63 // Method $line4/$read$$iw$$iw$.foo:(Lscala/Function0;)Ljava/lang/Object;
20: goto 44
23: astore_2
24: aload_2
25: invokevirtual #66 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
28: aload_1
29: if_acmpne 39
32: aload_2
33: invokevirtual #69 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
36: goto 41
39: aload_2
40: athrow
41: goto 44
44: areturn
Exception table:
from to target type
8 20 23 Class scala/runtime/NonLocalReturnControl
```
```
⚡ ~/scala/2.11.8/bin/scala
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112).
Type in expressions for evaluation. Or try :help.
scala> @inline def foo(a: => Any) = if ("".isEmpty) a else ""
foo: (a: => Any)Any
scala> class InlineReturn { def test: Any = foo(return "") }
defined class InlineReturn
scala> :javap -c InlineReturn#test
public java.lang.Object test();
Code:
0: new #4 // class java/lang/Object
3: dup
4: invokespecial #13 // Method java/lang/Object."<init>":()V
7: astore_1
8: getstatic #19 // Field .MODULE$:L;
11: new #21 // class InlineReturn$$anonfun$test$1
14: dup
15: aload_0
16: aload_1
17: invokespecial #24 // Method InlineReturn$$anonfun$test$1."<init>":(LInlineReturn;Ljava/lang/Object;)V
20: invokevirtual #28 // Method .foo:(Lscala/Function0;)Ljava/lang/Object;
23: goto 39
26: astore_2
27: aload_2
28: invokevirtual #31 // Method scala/runtime/NonLocalReturnControl.key:()Ljava/lang/Object;
31: aload_1
32: if_acmpne 40
35: aload_2
36: invokevirtual #34 // Method scala/runtime/NonLocalReturnControl.value:()Ljava/lang/Object;
39: areturn
40: aload_2
41: athrow
Exception table:
from to target type
8 26 26 Class scala/runtime/NonLocalReturnControl
scala> :quit
```
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Empty modifiers are now correctly printed out as "Modifiers()" instead of
annoyingly verbose "Modifiers(Set(), newTermName(""), List())".
No review.