Use fixed copying instead of writing code out

odersky · odersky · commit cd68604247c5 · 2024-02-29T11:38:13.000+01:00
diff --git a/compiler/src/dotty/tools/dotc/ast/Desugar.scala b/compiler/src/dotty/tools/dotc/ast/Desugar.scala
@@ -1978,10 +1978,7 @@ object desugar {
         val applyVParams = args.zipWithIndex.map {
           case (p, n) => makeSyntheticParameter(n + 1, p)
         }
-        tree match
-          case tree: FunctionWithMods =>
-            untpd.FunctionWithMods(applyVParams, result, tree.mods, tree.erasedParams)
-          case _ => untpd.Function(applyVParams, result)
+        cpy.Function(tree)(applyVParams, result).asInstanceOf[untpd.Function]
     }
   }
 

Original file line number	Diff line number	Diff line change
`@@ -1978,10 +1978,7 @@ object desugar {`
`1978`	`1978`	`val applyVParams = args.zipWithIndex.map {`
`1979`	`1979`	`case (p, n) => makeSyntheticParameter(n + 1, p)`
`1980`	`1980`	`}`
`1981`		`- tree match`
`1982`		`- case tree: FunctionWithMods =>`
`1983`		`- untpd.FunctionWithMods(applyVParams, result, tree.mods, tree.erasedParams)`
`1984`		`- case _ => untpd.Function(applyVParams, result)`
	`1981`	`+ cpy.Function(tree)(applyVParams, result).asInstanceOf[untpd.Function]`
`1985`	`1982`	`}`
`1986`	`1983`	`}`
`1987`	`1984`