Analyzer Plugins

AnnotationCheckers are insufficient because they live outside the
compiler cake and it's not possible to pass a Typer into an annotation
checker.

Analyzer plugins hook into important places of the compiler:

  - when the namer assigns a type to a symbol (plus a special hook for
    accessors)
  - before typing a tree, to modify the expected type
  - after typing a tree, to modify the type assigned to the tree

Analyzer plugins and annotation checker can be activated only during
selected phases of the compiler.

Refactored the CPS plugin to use an analyzer plugin (since
adaptToAnnotations is now part of analyzer plugins, no longer
annotation checkers).

1 files changed, 197 insertions, 0 deletions

diff --git a/test/files/run/analyzerPlugins.check b/test/files/run/analyzerPlugins.check
new file mode 100644
index 0000000000..8856fef5b3
--- /dev/null
+++ b/test/files/run/analyzerPlugins.check
@@ -0,0 +1,197 @@
+adaptBoundsToAnnots(List( <: Int), List(type T), List(Int @testAnn)) [2]
+annotationsConform(Boolean @testAnn, Boolean) [1]
+annotationsConform(Boolean(false), Boolean @testAnn) [1]
+annotationsConform(Int @testAnn, ?A) [1]
+annotationsConform(Int @testAnn, Any) [1]
+annotationsConform(Int @testAnn, Int) [2]
+annotationsConform(Int(1) @testAnn, Int) [1]
+annotationsConform(Int(1), Int @testAnn) [1]
+annotationsConform(Nothing, Int @testAnn) [2]
+annotationsConform(String @testAnn, String) [1]
+canAdaptAnnotations(Trees$Ident, String) [1]
+canAdaptAnnotations(Trees$Select, ?) [1]
+canAdaptAnnotations(Trees$Select, Boolean @testAnn) [1]
+canAdaptAnnotations(Trees$Select, Boolean) [1]
+canAdaptAnnotations(Trees$Select, String @testAnn) [1]
+canAdaptAnnotations(Trees$TypeTree, ?) [10]
+canAdaptAnnotations(Trees$Typed, ?) [3]
+canAdaptAnnotations(Trees$Typed, Any) [1]
+canAdaptAnnotations(Trees$Typed, Int) [1]
+lub(List(Int @testAnn, Int)) [1]
+pluginsPt(?, Trees$Annotated) [7]
+pluginsPt(?, Trees$Apply) [8]
+pluginsPt(?, Trees$ApplyImplicitView) [2]
+pluginsPt(?, Trees$Assign) [7]
+pluginsPt(?, Trees$Block) [4]
+pluginsPt(?, Trees$ClassDef) [2]
+pluginsPt(?, Trees$DefDef) [14]
+pluginsPt(?, Trees$Ident) [51]
+pluginsPt(?, Trees$If) [2]
+pluginsPt(?, Trees$Literal) [16]
+pluginsPt(?, Trees$New) [5]
+pluginsPt(?, Trees$PackageDef) [1]
+pluginsPt(?, Trees$Return) [1]
+pluginsPt(?, Trees$Select) [51]
+pluginsPt(?, Trees$Super) [2]
+pluginsPt(?, Trees$This) [20]
+pluginsPt(?, Trees$TypeApply) [3]
+pluginsPt(?, Trees$TypeBoundsTree) [2]
+pluginsPt(?, Trees$TypeDef) [1]
+pluginsPt(?, Trees$TypeTree) [38]
+pluginsPt(?, Trees$Typed) [1]
+pluginsPt(?, Trees$ValDef) [21]
+pluginsPt(Any, Trees$Literal) [2]
+pluginsPt(Any, Trees$Typed) [1]
+pluginsPt(Array[Any], Trees$ArrayValue) [1]
+pluginsPt(Boolean @testAnn, Trees$Literal) [1]
+pluginsPt(Boolean @testAnn, Trees$Select) [1]
+pluginsPt(Boolean, Trees$Apply) [1]
+pluginsPt(Boolean, Trees$Ident) [1]
+pluginsPt(Boolean, Trees$Literal) [1]
+pluginsPt(Double, Trees$Select) [1]
+pluginsPt(Int @testAnn, Trees$Literal) [1]
+pluginsPt(Int, Trees$Apply) [1]
+pluginsPt(Int, Trees$Ident) [2]
+pluginsPt(Int, Trees$If) [1]
+pluginsPt(Int, Trees$Literal) [5]
+pluginsPt(Int, Trees$Select) [3]
+pluginsPt(List, Trees$Apply) [1]
+pluginsPt(List[Any], Trees$Select) [1]
+pluginsPt(String @testAnn, Trees$Select) [1]
+pluginsPt(String, Trees$Apply) [1]
+pluginsPt(String, Trees$Block) [2]
+pluginsPt(String, Trees$Ident) [4]
+pluginsPt(String, Trees$Literal) [1]
+pluginsPt(String, Trees$Select) [1]
+pluginsPt(String, Trees$Typed) [1]
+pluginsPt(Unit, Trees$Assign) [1]
+pluginsPt(scala.annotation.Annotation, Trees$Apply) [5]
+pluginsTypeSig(<none>, Trees$Template) [2]
+pluginsTypeSig(class A, Trees$ClassDef) [1]
+pluginsTypeSig(class testAnn, Trees$ClassDef) [1]
+pluginsTypeSig(constructor A, Trees$DefDef) [2]
+pluginsTypeSig(constructor testAnn, Trees$DefDef) [1]
+pluginsTypeSig(method foo, Trees$DefDef) [1]
+pluginsTypeSig(method method, Trees$DefDef) [1]
+pluginsTypeSig(method nested, Trees$DefDef) [1]
+pluginsTypeSig(type T, Trees$TypeDef) [2]
+pluginsTypeSig(value annotField, Trees$ValDef) [2]
+pluginsTypeSig(value f, Trees$ValDef) [1]
+pluginsTypeSig(value inferField, Trees$ValDef) [2]
+pluginsTypeSig(value lub1, Trees$ValDef) [2]
+pluginsTypeSig(value lub2, Trees$ValDef) [2]
+pluginsTypeSig(value param, Trees$ValDef) [2]
+pluginsTypeSig(value str, Trees$ValDef) [1]
+pluginsTypeSig(value x, Trees$ValDef) [4]
+pluginsTypeSig(value y, Trees$ValDef) [4]
+pluginsTypeSig(variable count, Trees$ValDef) [3]
+pluginsTypeSigAccessor(value annotField) [1]
+pluginsTypeSigAccessor(value inferField) [1]
+pluginsTypeSigAccessor(value lub1) [1]
+pluginsTypeSigAccessor(value lub2) [1]
+pluginsTypeSigAccessor(value x) [1]
+pluginsTypeSigAccessor(value y) [1]
+pluginsTypeSigAccessor(variable count) [2]
+pluginsTyped( <: Int, Trees$TypeBoundsTree) [2]
+pluginsTyped(()Object, Trees$Select) [1]
+pluginsTyped(()String, Trees$Ident) [1]
+pluginsTyped(()String, Trees$TypeApply) [1]
+pluginsTyped(()scala.annotation.Annotation, Trees$Select) [1]
+pluginsTyped(()testAnn, Trees$Select) [10]
+pluginsTyped((str: String)A <and> (param: Double)A, Trees$Select) [1]
+pluginsTyped((x$1: Any)Boolean <and> (x: Double)Boolean <and> (x: Float)Boolean <and> (x: Long)Boolean <and> (x: Int)Boolean <and> (x: Char)Boolean <and> (x: Short)Boolean <and> (x: Byte)Boolean, Trees$Select) [1]
+pluginsTyped((x$1: Int)Unit, Trees$Select) [1]
+pluginsTyped((x: Double)Double <and> (x: Float)Float <and> (x: Long)Long <and> (x: Int)Int <and> (x: Char)Int <and> (x: Short)Int <and> (x: Byte)Int <and> (x: String)String, Trees$Select) [1]
+pluginsTyped((x: String)scala.collection.immutable.StringOps, Trees$Select) [2]
+pluginsTyped((xs: Array[Any])scala.collection.mutable.WrappedArray[Any], Trees$TypeApply) [1]
+pluginsTyped(<empty>.type, Trees$Ident) [1]
+pluginsTyped(<error>, Trees$Select) [1]
+pluginsTyped(<notype>, Trees$ClassDef) [2]
+pluginsTyped(<notype>, Trees$DefDef) [14]
+pluginsTyped(<notype>, Trees$PackageDef) [1]
+pluginsTyped(<notype>, Trees$TypeDef) [1]
+pluginsTyped(<notype>, Trees$ValDef) [21]
+pluginsTyped(<root>, Trees$Ident) [1]
+pluginsTyped(=> Boolean @testAnn, Trees$Select) [1]
+pluginsTyped(=> Double, Trees$Select) [4]
+pluginsTyped(=> Int, Trees$Select) [5]
+pluginsTyped(=> Int, Trees$TypeApply) [1]
+pluginsTyped(=> String @testAnn, Trees$Select) [1]
+pluginsTyped(A, Trees$Apply) [1]
+pluginsTyped(A, Trees$Ident) [2]
+pluginsTyped(A, Trees$This) [8]
+pluginsTyped(A, Trees$TypeTree) [4]
+pluginsTyped(A.super.type, Trees$Super) [1]
+pluginsTyped(A.this.type, Trees$This) [11]
+pluginsTyped(Any, Trees$TypeTree) [1]
+pluginsTyped(AnyRef, Trees$Select) [4]
+pluginsTyped(Array[Any], Trees$ArrayValue) [1]
+pluginsTyped(Boolean @testAnn, Trees$Select) [1]
+pluginsTyped(Boolean @testAnn, Trees$TypeTree) [4]
+pluginsTyped(Boolean(false), Trees$Literal) [2]
+pluginsTyped(Boolean, Trees$Apply) [1]
+pluginsTyped(Boolean, Trees$Select) [4]
+pluginsTyped(Char('c'), Trees$Literal) [2]
+pluginsTyped(Double, Trees$Select) [6]
+pluginsTyped(Int @testAnn, Trees$TypeTree) [2]
+pluginsTyped(Int @testAnn, Trees$Typed) [2]
+pluginsTyped(Int(0), Trees$Literal) [3]
+pluginsTyped(Int(1) @testAnn, Trees$Typed) [1]
+pluginsTyped(Int(1), Trees$Literal) [8]
+pluginsTyped(Int(2), Trees$Literal) [1]
+pluginsTyped(Int, Trees$Apply) [1]
+pluginsTyped(Int, Trees$Ident) [2]
+pluginsTyped(Int, Trees$If) [2]
+pluginsTyped(Int, Trees$Select) [15]
+pluginsTyped(Int, Trees$TypeTree) [13]
+pluginsTyped(List, Trees$Apply) [1]
+pluginsTyped(List, Trees$Select) [1]
+pluginsTyped(List[Any], Trees$Apply) [1]
+pluginsTyped(List[Any], Trees$Select) [1]
+pluginsTyped(List[Any], Trees$TypeTree) [3]
+pluginsTyped(Nothing, Trees$Return) [1]
+pluginsTyped(Nothing, Trees$Select) [2]
+pluginsTyped(Object, Trees$Apply) [1]
+pluginsTyped(String @testAnn, Trees$Ident) [1]
+pluginsTyped(String @testAnn, Trees$Select) [1]
+pluginsTyped(String @testAnn, Trees$TypeTree) [4]
+pluginsTyped(String(""), Trees$Literal) [2]
+pluginsTyped(String("huhu"), Trees$Literal) [1]
+pluginsTyped(String("str") @testAnn, Trees$Typed) [1]
+pluginsTyped(String("str"), Trees$Literal) [1]
+pluginsTyped(String("str"), Trees$Typed) [1]
+pluginsTyped(String("two"), Trees$Literal) [2]
+pluginsTyped(String, Trees$Apply) [2]
+pluginsTyped(String, Trees$Block) [2]
+pluginsTyped(String, Trees$Ident) [1]
+pluginsTyped(String, Trees$Select) [9]
+pluginsTyped(String, Trees$TypeTree) [7]
+pluginsTyped(Unit, Trees$Apply) [2]
+pluginsTyped(Unit, Trees$Assign) [8]
+pluginsTyped(Unit, Trees$Block) [4]
+pluginsTyped(Unit, Trees$If) [1]
+pluginsTyped(Unit, Trees$Literal) [5]
+pluginsTyped(Unit, Trees$TypeTree) [1]
+pluginsTyped([A](xs: A*)List[A], Trees$Select) [1]
+pluginsTyped([T <: Int]=> Int, Trees$Select) [1]
+pluginsTyped([T0 >: ? <: ?]()T0, Trees$Select) [1]
+pluginsTyped([T](xs: Array[T])scala.collection.mutable.WrappedArray[T], Trees$Select) [1]
+pluginsTyped(annotation.type, Trees$Select) [4]
+pluginsTyped(math.type, Trees$Select) [9]
+pluginsTyped(scala.annotation.Annotation, Trees$Apply) [1]
+pluginsTyped(scala.annotation.TypeConstraint, Trees$Select) [4]
+pluginsTyped(scala.annotation.TypeConstraint, Trees$TypeTree) [2]
+pluginsTyped(scala.collection.immutable.List.type, Trees$Select) [2]
+pluginsTyped(scala.collection.immutable.StringOps, Trees$ApplyImplicitView) [2]
+pluginsTyped(scala.collection.mutable.WrappedArray[Any], Trees$Apply) [1]
+pluginsTyped(scala.type, Trees$Ident) [1]
+pluginsTyped(scala.type, Trees$Select) [1]
+pluginsTyped(str.type, Trees$Ident) [3]
+pluginsTyped(testAnn, Trees$Apply) [5]
+pluginsTyped(testAnn, Trees$Ident) [5]
+pluginsTyped(testAnn, Trees$New) [5]
+pluginsTyped(testAnn, Trees$This) [1]
+pluginsTyped(testAnn, Trees$TypeTree) [2]
+pluginsTyped(testAnn.super.type, Trees$Super) [1]
+pluginsTyped(type, Trees$Select) [1]
+pluginsTypedReturn(return f, String) [1]