blob: c6a2181576e7468e59f5c8919d9fffaf774e2ed6 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
package dotty.tools.dotc
package transform
import core._
import Contexts.Context
import Types._
import TreeTransforms._
import Decorators._
import ast.Trees._
import Flags._
/** Transform references of the form
*
* C.this.m
*
* where `C` is a class with explicit self type and `C` is not a
* subclass of the owner of `m` to
*
* C.this.asInstanceOf[S].m
*
* where `S` is the self type of `C`.
*/
class ExplicitSelf extends MiniPhaseTransform { thisTransform =>
import ast.tpd._
override def phaseName = "explicitSelf"
override def transformSelect(tree: Select)(implicit ctx: Context, info: TransformerInfo): Tree = tree match {
case Select(thiz: This, name) if name.isTermName =>
val cls = thiz.symbol.asClass
val cinfo = cls.classInfo
if (cinfo.givenSelfType.exists && !cls.derivesFrom(tree.symbol.owner))
cpy.Select(tree)(thiz.asInstance(cinfo.selfType), name)
else tree
case _ => tree
}
}
|
