diff options
Diffstat (limited to 'src/compiler/scala/tools/reflect')
| -rw-r--r-- | src/compiler/scala/tools/reflect/ToolBox.scala | 28 | ||||
| -rw-r--r-- | src/compiler/scala/tools/reflect/ToolBoxFactory.scala | 13 |
2 files changed, 31 insertions, 10 deletions
diff --git a/src/compiler/scala/tools/reflect/ToolBox.scala b/src/compiler/scala/tools/reflect/ToolBox.scala index 4a3db09909..f47db49718 100644 --- a/src/compiler/scala/tools/reflect/ToolBox.scala +++ b/src/compiler/scala/tools/reflect/ToolBox.scala @@ -21,19 +21,35 @@ trait ToolBox[U <: scala.reflect.api.Universe] { */ def frontEnd: FrontEnd + /** Represents mode of operations of the typechecker underlying `c.typecheck` calls. + * Is necessary since the shape of the typechecked tree alone is not enough to guess how it should be typechecked. + * Can be EXPRmode (typecheck as a term) or TYPEmode (typecheck as a type). + */ + type TypecheckMode + + /** Indicates that an argument to `c.typecheck` should be typechecked as a term. + * This is the default typechecking mode in Scala 2.11 and the only one supported in Scala 2.10. + */ + val TERMmode: TypecheckMode + + /** Indicates that an argument to `c.typecheck` should be typechecked as a type. + */ + val TYPEmode: TypecheckMode + /** @see `Typers.typecheck` */ @deprecated("Use `tb.typecheck` instead", "2.11.0") def typeCheck(tree: u.Tree, pt: u.Type = u.WildcardType, silent: Boolean = false, withImplicitViewsDisabled: Boolean = false, withMacrosDisabled: Boolean = false): u.Tree = - typecheck(tree, pt, silent, withImplicitViewsDisabled, withMacrosDisabled) + typecheck(tree, TERMmode, pt, silent, withImplicitViewsDisabled, withMacrosDisabled) - /** Typechecks a tree using this ToolBox. + /** Typechecks a tree against the expected type `pt` + * under typechecking mode specified in `mode` with [[EXPRmode]] being default. * This populates symbols and types of the tree and possibly transforms it to reflect certain desugarings. * * If the tree has unresolved type variables (represented as instances of `FreeTypeSymbol` symbols), * then they all have to be resolved first using `Tree.substituteTypes`, or an error occurs. * - * If `silent` is false, `TypeError` will be thrown in case of a typecheck error. + * If `silent` is false, `ToolBoxError` will be thrown in case of a typecheck error. * If `silent` is true, the typecheck is silent and will return `EmptyTree` if an error occurs. * Such errors don't vanish and can be inspected by turning on -Ydebug. * @@ -41,7 +57,7 @@ trait ToolBox[U <: scala.reflect.api.Universe] { * `withImplicitViewsDisabled` recursively prohibits implicit views (though, implicit vals will still be looked up and filled in), default value is false * `withMacrosDisabled` recursively prohibits macro expansions and macro-based implicits, default value is false */ - def typecheck(tree: u.Tree, pt: u.Type = u.WildcardType, silent: Boolean = false, withImplicitViewsDisabled: Boolean = false, withMacrosDisabled: Boolean = false): u.Tree + def typecheck(tree: u.Tree, mode: TypecheckMode = TERMmode, pt: u.Type = u.WildcardType, silent: Boolean = false, withImplicitViewsDisabled: Boolean = false, withMacrosDisabled: Boolean = false): u.Tree /** Infers an implicit value of the expected type `pt` in top-level context. * Optional `pos` parameter provides a position that will be associated with the implicit search. @@ -50,7 +66,7 @@ trait ToolBox[U <: scala.reflect.api.Universe] { * this API won't take into account the lexical context of the callsite, because * currently it's impossible to reify it. * - * If `silent` is false, `TypeError` will be thrown in case of an inference error. + * If `silent` is false, `ToolBoxError` will be thrown in case of an inference error. * If `silent` is true, the typecheck is silent and will return `EmptyTree` if an error occurs. * Such errors don't vanish and can be inspected by turning on -Xlog-implicits. * Unlike in `typecheck`, `silent` is true by default. @@ -64,7 +80,7 @@ trait ToolBox[U <: scala.reflect.api.Universe] { * this API won't take into account the lexical context of the callsite, because * currently it's impossible to reify it. * - * If `silent` is false, `TypeError` will be thrown in case of an inference error. + * If `silent` is false, `ToolBoxError` will be thrown in case of an inference error. * If `silent` is true, the typecheck is silent and will return `EmptyTree` if an error occurs. * Such errors don't vanish and can be inspected by turning on -Xlog-implicits. * Unlike in `typecheck`, `silent` is true by default. diff --git a/src/compiler/scala/tools/reflect/ToolBoxFactory.scala b/src/compiler/scala/tools/reflect/ToolBoxFactory.scala index 7bae3203c2..b43b4653eb 100644 --- a/src/compiler/scala/tools/reflect/ToolBoxFactory.scala +++ b/src/compiler/scala/tools/reflect/ToolBoxFactory.scala @@ -171,11 +171,11 @@ abstract class ToolBoxFactory[U <: JavaUniverse](val u: U) { factorySelf => unwrapped } - def typecheck(expr: Tree, pt: Type, silent: Boolean, withImplicitViewsDisabled: Boolean, withMacrosDisabled: Boolean): Tree = + def typecheck(expr: Tree, pt: Type, mode: scala.reflect.internal.Mode, silent: Boolean, withImplicitViewsDisabled: Boolean, withMacrosDisabled: Boolean): Tree = transformDuringTyper(expr, withImplicitViewsDisabled = withImplicitViewsDisabled, withMacrosDisabled = withMacrosDisabled)( (currentTyper, expr) => { trace("typing (implicit views = %s, macros = %s): ".format(!withImplicitViewsDisabled, !withMacrosDisabled))(showAttributed(expr, true, true, settings.Yshowsymkinds.value)) - currentTyper.silent(_.typed(expr, pt), reportAmbiguousErrors = false) match { + currentTyper.silent(_.typed(expr, mode, pt), reportAmbiguousErrors = false) match { case analyzer.SilentResultValue(result) => trace("success: ")(showAttributed(result, true, true, settings.Yshowsymkinds.value)) result @@ -361,7 +361,12 @@ abstract class ToolBoxFactory[U <: JavaUniverse](val u: U) { factorySelf => } } - def typecheck(tree: u.Tree, expectedType: u.Type, silent: Boolean = false, withImplicitViewsDisabled: Boolean = false, withMacrosDisabled: Boolean = false): u.Tree = withCompilerApi { compilerApi => + type TypecheckMode = scala.reflect.internal.Mode + val TypecheckMode = scala.reflect.internal.Mode + val TERMmode = TypecheckMode.EXPRmode + val TYPEmode = TypecheckMode.TYPEmode | TypecheckMode.FUNmode + + def typecheck(tree: u.Tree, mode: TypecheckMode = TERMmode, expectedType: u.Type, silent: Boolean = false, withImplicitViewsDisabled: Boolean = false, withMacrosDisabled: Boolean = false): u.Tree = withCompilerApi { compilerApi => import compilerApi._ if (compiler.settings.verbose) println("importing "+tree+", expectedType = "+expectedType) @@ -369,7 +374,7 @@ abstract class ToolBoxFactory[U <: JavaUniverse](val u: U) { factorySelf => val cexpectedType: compiler.Type = importer.importType(expectedType) if (compiler.settings.verbose) println("typing "+ctree+", expectedType = "+expectedType) - val ttree: compiler.Tree = compiler.typecheck(ctree, cexpectedType, silent = silent, withImplicitViewsDisabled = withImplicitViewsDisabled, withMacrosDisabled = withMacrosDisabled) + val ttree: compiler.Tree = compiler.typecheck(ctree, cexpectedType, mode, silent = silent, withImplicitViewsDisabled = withImplicitViewsDisabled, withMacrosDisabled = withMacrosDisabled) val uttree = exporter.importTree(ttree) uttree } |