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author | Jason Zaugg <jzaugg@gmail.com> | 2015-06-24 15:19:05 +1000 |
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committer | Jason Zaugg <jzaugg@gmail.com> | 2015-06-24 18:10:42 +1000 |
commit | 1f7417c763fb199cacc6afedc6e54796916fd673 (patch) | |
tree | bd00d7e0e47be310172f01c758c01ca5430063c4 /src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala | |
parent | 73f40564a6b19e8b15f0908c3e24f1a8fe405605 (diff) | |
parent | 1b09e12ef3b3fea1cab56bac893295f74de23b8b (diff) | |
download | scala-1f7417c763fb199cacc6afedc6e54796916fd673.tar.gz scala-1f7417c763fb199cacc6afedc6e54796916fd673.tar.bz2 scala-1f7417c763fb199cacc6afedc6e54796916fd673.zip |
Merge branch '2.11.x' into merge/2.11.x-to-2.12.x-20150624
Diffstat (limited to 'src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala')
-rw-r--r-- | src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala | 43 |
1 files changed, 23 insertions, 20 deletions
diff --git a/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala b/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala index 4b95f935b1..c3f71969f6 100644 --- a/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala +++ b/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala @@ -33,7 +33,6 @@ abstract class BCodeBodyBuilder extends BCodeSkelBuilder { * Functionality to build the body of ASM MethodNode, except for `synchronized` and `try` expressions. */ abstract class PlainBodyBuilder(cunit: CompilationUnit) extends PlainSkelBuilder(cunit) { - import icodes.TestOp import icodes.opcodes.InvokeStyle @@ -1287,38 +1286,42 @@ abstract class BCodeBodyBuilder extends BCodeSkelBuilder { def genInvokeDynamicLambda(lambdaTarget: Symbol, arity: Int, functionalInterface: Symbol) { val isStaticMethod = lambdaTarget.hasFlag(Flags.STATIC) + def asmType(sym: Symbol) = classBTypeFromSymbol(sym).toASMType - val targetHandle = + val implMethodHandle = new asm.Handle(if (lambdaTarget.hasFlag(Flags.STATIC)) asm.Opcodes.H_INVOKESTATIC else asm.Opcodes.H_INVOKEVIRTUAL, classBTypeFromSymbol(lambdaTarget.owner).internalName, lambdaTarget.name.toString, asmMethodType(lambdaTarget).descriptor) - val receiver = if (isStaticMethod) None else Some(lambdaTarget.owner) + val receiver = if (isStaticMethod) Nil else lambdaTarget.owner :: Nil val (capturedParams, lambdaParams) = lambdaTarget.paramss.head.splitAt(lambdaTarget.paramss.head.length - arity) // Requires https://github.com/scala/scala-java8-compat on the runtime classpath - val returnUnit = lambdaTarget.info.resultType.typeSymbol == UnitClass - val functionalInterfaceDesc: String = classBTypeFromSymbol(functionalInterface).descriptor - val desc = (receiver.toList ::: capturedParams).map(sym => toTypeKind(sym.info)).mkString(("("), "", ")") + functionalInterfaceDesc + val invokedType = asm.Type.getMethodDescriptor(asmType(functionalInterface), (receiver ::: capturedParams).map(sym => toTypeKind(sym.info).toASMType): _*) - // TODO specialization val constrainedType = new MethodBType(lambdaParams.map(p => toTypeKind(p.tpe)), toTypeKind(lambdaTarget.tpe.resultType)).toASMType - val abstractMethod = functionalInterface.info.decls.find(_.isDeferred).getOrElse(functionalInterface.info.member(nme.apply)) - val methodName = abstractMethod.name.toString - val applyN = { - val mt = asmMethodType(abstractMethod) - mt.toASMType - } - - bc.jmethod.visitInvokeDynamicInsn(methodName, desc, lambdaMetaFactoryBootstrapHandle, - // boostrap args - applyN, targetHandle, constrainedType + val sam = functionalInterface.info.decls.find(_.isDeferred).getOrElse(functionalInterface.info.member(nme.apply)) + val samName = sam.name.toString + val samMethodType = asmMethodType(sam).toASMType + + val flags = 3 // TODO 2.12.x Replace with LambdaMetafactory.FLAG_SERIALIZABLE | LambdaMetafactory.FLAG_MARKERS + + val ScalaSerializable = classBTypeFromSymbol(definitions.SerializableClass).toASMType + bc.jmethod.visitInvokeDynamicInsn(samName, invokedType, lambdaMetaFactoryBootstrapHandle, + /* samMethodType = */ samMethodType, + /* implMethod = */ implMethodHandle, + /* instantiatedMethodType = */ constrainedType, + /* flags = */ flags.asInstanceOf[AnyRef], + /* markerInterfaceCount = */ 1.asInstanceOf[AnyRef], + /* markerInterfaces[0] = */ ScalaSerializable, + /* bridgeCount = */ 0.asInstanceOf[AnyRef] ) + indyLambdaHosts += this.claszSymbol } } - val lambdaMetaFactoryBootstrapHandle = + lazy val lambdaMetaFactoryBootstrapHandle = new asm.Handle(asm.Opcodes.H_INVOKESTATIC, - "java/lang/invoke/LambdaMetafactory", "metafactory", - "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;") + definitions.LambdaMetaFactory.fullName('/'), sn.AltMetafactory.toString, + "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;") } |