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
|
package scala.reflect.macros
package runtime
trait Typers {
self: Context =>
def openMacros: List[Context] = this :: universe.analyzer.openMacros
def openImplicits: List[ImplicitCandidate] = callsiteTyper.context.openImplicits.map(_.toImplicitCandidate)
/**
* @see [[scala.tools.reflect.Toolbox.typeCheck]]
*/
def typeCheck(tree: Tree, pt: Type = universe.WildcardType, silent: Boolean = false, withImplicitViewsDisabled: Boolean = false, withMacrosDisabled: Boolean = false): Tree = {
macroLogVerbose("typechecking %s with expected type %s, implicit views = %s, macros = %s".format(tree, pt, !withImplicitViewsDisabled, !withMacrosDisabled))
val context = callsiteTyper.context
val withImplicitFlag = if (!withImplicitViewsDisabled) (context.withImplicitsEnabled[Tree] _) else (context.withImplicitsDisabled[Tree] _)
val withMacroFlag = if (!withMacrosDisabled) (context.withMacrosEnabled[Tree] _) else (context.withMacrosDisabled[Tree] _)
def withContext(tree: => Tree) = withImplicitFlag(withMacroFlag(tree))
def typecheckInternal(tree: Tree) = callsiteTyper.silent(_.typed(tree, universe.analyzer.EXPRmode, pt), reportAmbiguousErrors = false)
universe.wrappingIntoTerm(tree)(wrappedTree => withContext(typecheckInternal(wrappedTree) match {
case universe.analyzer.SilentResultValue(result) =>
macroLogVerbose(result)
result
case error @ universe.analyzer.SilentTypeError(_) =>
macroLogVerbose(error.err.errMsg)
if (!silent) throw new TypecheckException(error.err.errPos, error.err.errMsg)
universe.EmptyTree
}))
}
def inferImplicitValue(pt: Type, silent: Boolean = true, withMacrosDisabled: Boolean = false, pos: Position = enclosingPosition): Tree = {
macroLogVerbose("inferring implicit value of type %s, macros = %s".format(pt, !withMacrosDisabled))
universe.analyzer.inferImplicit(universe.EmptyTree, pt, false, callsiteTyper.context, silent, withMacrosDisabled, pos, (pos, msg) => throw TypecheckException(pos, msg))
}
def inferImplicitView(tree: Tree, from: Type, to: Type, silent: Boolean = true, withMacrosDisabled: Boolean = false, pos: Position = enclosingPosition): Tree = {
macroLogVerbose("inferring implicit view from %s to %s for %s, macros = %s".format(from, to, tree, !withMacrosDisabled))
val viewTpe = universe.appliedType(universe.definitions.FunctionClass(1).toTypeConstructor, List(from, to))
universe.analyzer.inferImplicit(tree, viewTpe, true, callsiteTyper.context, silent, withMacrosDisabled, pos, (pos, msg) => throw TypecheckException(pos, msg))
}
def resetAllAttrs(tree: Tree): Tree = universe.resetAllAttrs(tree)
def resetLocalAttrs(tree: Tree): Tree = universe.resetLocalAttrs(tree)
}
|
