diff options
Diffstat (limited to 'src/dotty/tools/dotc/core/pickling/Traversals.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/pickling/Traversals.scala | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/core/pickling/Traversals.scala b/src/dotty/tools/dotc/core/pickling/Traversals.scala new file mode 100644 index 000000000..85dc53cd0 --- /dev/null +++ b/src/dotty/tools/dotc/core/pickling/Traversals.scala @@ -0,0 +1,54 @@ +package dotty.tools.dotc +package core +package pickling + +import util.Positions._ +import ast.tpd._ +import ast.Trees.Lazy +import core.Contexts._ + +object Traversals { + + def traverse(x: Any, leftOp: Tree => Unit, rightOp: Tree => Unit) = { + + def traverseElems(xs: TraversableOnce[Any]) = xs.foreach(traverseElem) + + def traverseElem(x: Any): Unit = x match { + case x: Tree @ unchecked => +/** TODO: pickle annotation positions + x match { + case x: MemberDef => traverseElems(x.symbol.annotations) + case _ => + } */ + leftOp(x) + x match { + case x: ValDef => + traverseElem(x.tpt) + traverseUnlessLazy(x.unforced) + case x: DefDef => + traverseElems(x.tparams) + traverseElems(x.vparamss) + traverseElem(x.tpt) + traverseUnlessLazy(x.unforced) + case x: Template => + traverseElem(x.constr) + traverseElems(x.parents) + traverseElem(x.self) + traverseUnlessLazy(x.unforced) + case _ => + traverseElems(x.productIterator) + } + rightOp(x) + case xs: List[_] => + traverseElems(xs) + case _ => + } + + def traverseUnlessLazy(x: Any) = x match { + case x: Lazy[_] => + case _ => traverseElem(x) + } + + traverseElem(x) + } +}
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