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fresh scope for each inherited definition when tagging type variables

This commit is contained in:
Mark Harrah 2012-04-28 18:58:38 -04:00
parent 408d11557d
commit ddcf885fb9
1 changed files with 18 additions and 4 deletions
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22
compile/api/TagTypeVariables.scala
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@ -23,10 +23,12 @@ private class TagTypeVariables
def tag(s: SourceAPI): TypeVars =
{
s.definitions.foreach(tagDefinition)
tagDefinitions(s.definitions)
tags
}
def tagDefinitions(ds: Seq[Definition]) = ds.foreach(tagDefinition)
def tagDefinitions(ds: Seq[Definition], eachFresh: Boolean = false): Unit =
for(d <- ds) if(eachFresh) freshScope(tagDefinition(d)) else tagDefinition(d)
def tagDefinition(d: Definition)
{
d match
@ -123,7 +125,7 @@ private class TagTypeVariables
{
tagTypes(structure.parents)
tagDefinitions(structure.declared)
tagDefinitions(structure.inherited)
tagDefinitions(structure.inherited, eachFresh=true)
}
def tagParameters(parameters: Seq[TypeParameter], base: Type): Unit =
scope {
@ -136,12 +138,24 @@ private class TagTypeVariables
val saveIndex = index
index = 0
level += 1
action
level -= 1
index = saveIndex
}
def freshScope(action: => Unit)
{
val saveIndex = index
val saveLevel = level
index = 0
level = 0
action
level = saveLevel
index = saveIndex
}
def recordTypeParameter(id: Int)
{
tags(id) = (level, index)