blob: 7c2630dc167bbbb2f31df2004a1b1fbc618bd1c9 (
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
package plugintemplate
import scala.tools.nsc._
import scala.tools.nsc.plugins.PluginComponent
import scala.tools.nsc.transform.Transform
// import scala.tools.nsc.transform.TypingTransformers
/** This class implements a plugin component using tree transformers. If
* a <code>Typer</code> is needed during transformation, the component
* should mix in <code>TypingTransformers</code>. This provides a local
* variable <code>localTyper: Typer</code> that is always updated to
* the current context.
*
* @todo Adapt the name of this class to the plugin, and implement it.
*/
class TemplateTransformComponent(val global: Global) extends PluginComponent
// with TypingTransformers
with Transform {
import global._
import global.definitions._
val runsAfter = List[String]("refchecks")
/** The phase name of the compiler plugin
* @todo Adapt to specific plugin.
*/
val phaseName = "plugintemplatetransform"
def newTransformer(unit: CompilationUnit) = new TemplateTransformer
/** The tree transformer that implements the behavior of this
* component. Change the superclass to <code>TypingTransformer</code>
* to make a local typechecker <code>localTyper</code> available.
*
* @todo Implement.
*/
class TemplateTransformer extends /*Typing*/ Transformer {
/** When using <code>preTransform</code>, each node is
* visited before its children.
*/
def preTransform(tree: Tree): Tree = tree match {
case _ => tree
}
/** When using <code>postTransform</code>, each node is
* visited after its children.
*/
def postTransform(tree: Tree): Tree = tree match {
case New(tpt) =>
println("post-transforming new "+ tpt)
tree
case _ => tree
}
override def transform(tree: Tree): Tree = {
postTransform(super.transform(preTransform(tree)))
}
}
}
|
