Merge pull request #12165 from dotty-staging/close-#12163

Add regression test

Author: liufengyun

tests/run-macros/i12163.check

@@ -0,0 +1,4 @@
+Test
+Type
+ABC
+No label matched: sdofjsdifj

tests/run-macros/i12163/Macro_1.scala

@@ -0,0 +1,31 @@
+import scala.quoted.*
+import scala.util.matching.Regex
+
+inline def showLabel(inline label: String): String =
+  ${ showLabelExpr('label) }
+
+
+private def showLabelExpr(label: Expr[String])(using Quotes): Expr[String] = {
+  val suggestRegex: Regex = "(Type)([a-zA-Z]+)(Mapping)([a-zA-Z]+)".r
+  val docRegex: Regex = "(Test)(Mapping)([a-zA-Z]+)".r
+  val simpleRegex: Regex = "([a-zA-Z]+)(Mapping)([a-zA-Z]+)".r
+
+  label.value match {
+    case Some(docRegex(doc, _, _)) =>
+      Expr(doc)
+
+    case Some(suggestRegex(suggest, suggestType, _, _)) =>
+      Expr(suggest)
+
+    case Some(simpleRegex(docType, _, _)) =>
+      Expr(docType)
+
+    case Some(value) =>
+      Expr(s"No label matched: $value")
+      // quotes.reflect.report.throwError(s"No label matched: $value")
+
+    case None =>
+      Expr(s"Expected label to be a know string but was: ${label.show}")
+      // quotes.reflect.report.throwError(s"Expected label to be a know string but was: ${label.show}")
+  }
+}

tests/run-macros/i12163/Test_2.scala

@@ -0,0 +1,6 @@
+
+@main def Test(): Unit =
+  println(showLabel("TestMappingDocument"))
+  println(showLabel("TypeABCMappingDocument"))
+  println(showLabel("ABCMappingDocument"))
+  println(showLabel("sdofjsdifj"))