Merge pull request #12042 from dotty-staging/backport-#12025

Add `TermParamClause.isGiven`

Author: nicolasstucki

compiler/src/scala/quoted/runtime/impl/QuotesImpl.scala

@@ -1510,6 +1510,8 @@ class QuotesImpl private (using val ctx: Context) extends Quotes, QuoteUnpickler
         def params: List[ValDef] = self
         def isImplicit: Boolean =
           self.nonEmpty && self.head.symbol.is(dotc.core.Flags.Implicit)
+        def isGiven: Boolean =
+          self.nonEmpty && self.head.symbol.is(dotc.core.Flags.Given)
     end TermParamClauseMethods
 
     type TypeParamClause = List[tpd.TypeDef]

library/src/scala/quoted/Quotes.scala

@@ -2156,8 +2156,10 @@ trait Quotes { self: runtime.QuoteUnpickler & runtime.QuoteMatching =>
       extension (self: TermParamClause)
         /** List of parameters of the clause */
         def params: List[ValDef]
-        /** Is this a given parameter clause `(implicit X1, ..., Xn)`, `(given X1, ..., Xn)` or `(given x1: X1, ..., xn: Xn)` */
+        /** Is this an implicit parameter clause `(implicit x1: X1, ..., xn: Xn)` */
         def isImplicit: Boolean
+        /** Is this a given parameter clause `(using X1, ..., Xn)` or `(using x1: X1, ..., xn: Xn)` */
+        def isGiven: Boolean
     end TermParamClauseMethods
 
     /** A type parameter clause `[X1, ..., Xn]` */

tests/run-macros/i12021.check

@@ -0,0 +1,2 @@
+X1: (i: scala.Int) isImplicit=true, isGiven=false
+X2: (i: scala.Int) isImplicit=false, isGiven=true

tests/run-macros/i12021/Macro_1.scala

@@ -0,0 +1,15 @@
+import scala.quoted.*
+
+inline def inspect[A]: String =
+  ${ inspect2[A] }
+
+def inspect2[A: Type](using Quotes): Expr[String] = {
+  import quotes.reflect.*
+
+  val DefDef(_, List(Nil, ps: TermParamClause), _, _) =
+    TypeRepr.of[A].typeSymbol.primaryConstructor.tree
+
+  val names = ps.params.map(p => s"${p.name}: ${p.tpt.show}").mkString("(", ", ", ")")
+
+  Expr(s"${Type.show[A]}: $names isImplicit=${ps.isImplicit}, isGiven=${ps.isGiven}")
+}

tests/run-macros/i12021/Test_2.scala

@@ -0,0 +1,8 @@
+
+class X1(implicit i: Int)
+class X2(using i: Int)
+
+@main def Test = {
+  println(inspect[X1])
+  println(inspect[X2])
+}