diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala')
| -rw-r--r-- | src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala b/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala index 23b33e9be6..9ebbc2fea4 100644 --- a/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala +++ b/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala @@ -309,7 +309,7 @@ trait MatchTranslation { self: PatternMatching => // debug.patmat("unfun: "+ (unfun.tpe, unfun.symbol.ownerChain, unfun.symbol.info, patBinder.info)) translateExtractorPattern(ExtractorCall(unfun, args)) - /** A constructor pattern is of the form c(p1, ..., pn) where n ≥ 0. + /* A constructor pattern is of the form c(p1, ..., pn) where n ≥ 0. It consists of a stable identifier c, followed by element patterns p1, ..., pn. The constructor c is a simple or qualified name which denotes a case class (§5.3.2). @@ -328,22 +328,22 @@ trait MatchTranslation { self: PatternMatching => noFurtherSubPats() } - /** A typed pattern x : T consists of a pattern variable x and a type pattern T. - The type of x is the type pattern T, where each type variable and wildcard is replaced by a fresh, unknown type. - This pattern matches any value matched by the type pattern T (§8.2); it binds the variable name to that value. - **/ + /* A typed pattern x : T consists of a pattern variable x and a type pattern T. + The type of x is the type pattern T, where each type variable and wildcard is replaced by a fresh, unknown type. + This pattern matches any value matched by the type pattern T (§8.2); it binds the variable name to that value. + */ // must treat Typed and Bind together -- we need to know the patBinder of the Bind pattern to get at the actual type case MaybeBoundTyped(subPatBinder, pt) => val next = glb(List(dealiasWiden(patBinder.info), pt)).normalize // a typed pattern never has any subtrees noFurtherSubPats(TypeTestTreeMaker(subPatBinder, patBinder, pt, next)(pos)) - /** A pattern binder x@p consists of a pattern variable x and a pattern p. - The type of the variable x is the static type T of the pattern p. - This pattern matches any value v matched by the pattern p, - provided the run-time type of v is also an instance of T, <-- TODO! https://issues.scala-lang.org/browse/SI-1503 - and it binds the variable name to that value. - **/ + /* A pattern binder x@p consists of a pattern variable x and a pattern p. + The type of the variable x is the static type T of the pattern p. + This pattern matches any value v matched by the pattern p, + provided the run-time type of v is also an instance of T, <-- TODO! https://issues.scala-lang.org/browse/SI-1503 + and it binds the variable name to that value. + */ case Bound(subpatBinder, p) => // replace subpatBinder by patBinder (as if the Bind was not there) withSubPats(List(SubstOnlyTreeMaker(subpatBinder, patBinder)), @@ -351,14 +351,14 @@ trait MatchTranslation { self: PatternMatching => (patBinder, p) ) - /** 8.1.4 Literal Patterns - A literal pattern L matches any value that is equal (in terms of ==) to the literal L. - The type of L must conform to the expected type of the pattern. + /* 8.1.4 Literal Patterns + A literal pattern L matches any value that is equal (in terms of ==) to the literal L. + The type of L must conform to the expected type of the pattern. - 8.1.5 Stable Identifier Patterns (a stable identifier r (see §3.1)) - The pattern matches any value v such that r == v (§12.1). - The type of r must conform to the expected type of the pattern. - **/ + 8.1.5 Stable Identifier Patterns (a stable identifier r (see §3.1)) + The pattern matches any value v such that r == v (§12.1). + The type of r must conform to the expected type of the pattern. + */ case Literal(Constant(_)) | Ident(_) | Select(_, _) | This(_) => noFurtherSubPats(EqualityTestTreeMaker(patBinder, patTree, pos)) |