Fix #414: Define the rest of the special Predef methods.

tasty-query/shared/src/main/scala/tastyquery/Definitions.scala

@@ -110,14 +110,15 @@ final class Definitions private[tastyquery] (ctx: Context, rootPackage: PackageS
     owner: ClassSymbol,
     name: UnsignedTermName,
     tpe: TypeOrMethodic,
-    flags: FlagSet = EmptyFlagSet
+    flags: FlagSet = EmptyFlagSet,
+    termParamFlags: FlagSet = EmptyFlagSet
   ): TermSymbol =
     val sym = TermSymbol
       .create(name, owner)
       .withFlags(Method | flags, privateWithin = None)
       .withDeclaredType(tpe)
       .setAnnotations(Nil)
-      .autoFillParamSymss()
+      .autoFillParamSymss(termParamFlags)
     sym.paramSymss.foreach(_.merge.foreach(_.setAnnotations(Nil)))
     sym.checkCompleted()
     sym
@@ -295,20 +296,50 @@ final class Definitions private[tastyquery] (ctx: Context, rootPackage: PackageS
     * cannot read other files while loading one file.
     */
   private[tastyquery] def createPredefMagicMethods(cls: ClassSymbol): Unit =
-    val nnMethodType = PolyType(List(typeName("T")))(
-      _ => List(NothingAnyBounds),
-      pt => MethodType(List(termName("x")))(_ => List(pt.paramRefs(0)), mt => AndType(mt.paramRefs(0), pt.paramRefs(0)))
+    val TNameList = List(typeName("T"))
+    val xNameList = List(termName("x"))
+    val yNameList = List(termName("y"))
+
+    val NothingAnyBoundsList = List(NothingAnyBounds)
+
+    // assert
+    val assertMethodType1 = MethodType(List(termName("assertion")), List(BooleanType), UnitType)
+    val assertMethodType2 =
+      MethodType(List(termName("assertion"), termName("message")), List(BooleanType, ByNameType(AnyType)), UnitType)
+    for assertMethodType <- List(assertMethodType1, assertMethodType2) do
+      createSpecialMethod(
+        cls,
+        termName("assert"),
+        assertMethodType,
+        Transparent | Inline | Final,
+        termParamFlags = Inline
+      )
+    end for // scalafmt: don't destroy my formatting, please
+
+    // valueOf
+    val valueOfMethodType = PolyType(TNameList)(_ => NothingAnyBoundsList, pt => pt.paramRefs(0))
+    createSpecialMethod(cls, termName("valueOf"), valueOfMethodType, Inline | Final)
+
+    // summon
+    val summonMethodType = PolyType(TNameList)(
+      _ => NothingAnyBoundsList,
+      pt => MethodType(xNameList)(_ => pt.paramRefs, mt => mt.paramRefs(0))
+    )
+    createSpecialMethod(cls, termName("summon"), summonMethodType, Transparent | Inline | Final, termParamFlags = Given)
+
+    // nn
+    val nnMethodType = PolyType(TNameList)(
+      _ => NothingAnyBoundsList,
+      pt => MethodType(xNameList)(_ => List(pt.paramRefs(0)), mt => AndType(mt.paramRefs(0), pt.paramRefs(0)))
     )
     createSpecialMethod(cls, termName("nn"), nnMethodType, Inline | Final | Extension)
 
+    // eq and ne
     val anyRefOrNull = OrType(AnyRefType, NullType)
-    val eqNeMethodType = MethodType(
-      List(termName("x")),
-      List(anyRefOrNull),
-      MethodType(List(termName("y")), List(anyRefOrNull), BooleanType)
-    )
-    createSpecialMethod(cls, termName("eq"), eqNeMethodType, Inline | Final | Extension)
-    createSpecialMethod(cls, termName("ne"), eqNeMethodType, Inline | Final | Extension)
+    val eqNeMethodType =
+      MethodType(xNameList, List(anyRefOrNull), MethodType(yNameList, List(anyRefOrNull), BooleanType))
+    createSpecialMethod(cls, termName("eq"), eqNeMethodType, Inline | Final | Extension, termParamFlags = Inline)
+    createSpecialMethod(cls, termName("ne"), eqNeMethodType, Inline | Final | Extension, termParamFlags = Inline)
   end createPredefMagicMethods
 
   /** Creates one of the `ContextFunctionNClass` classes.

tasty-query/shared/src/main/scala/tastyquery/Symbols.scala

@@ -477,38 +477,42 @@ object Symbols {
       this
 
     private[tastyquery] final def autoFillParamSymss(): this.type =
-      setParamSymss(autoComputeParamSymss(declaredType))
-
-    private def autoComputeParamSymss(tpe: TypeOrMethodic): List[ParamSymbolsClause] = tpe match
-      case tpe: MethodType =>
-        /* For term params, we do not instantiate the paramTypes.
-         * We only use autoFillParamSymss for Java definitions, which do not
-         * support term param references at all, and from Definitions, which
-         * does not use that capability in the term param bounds.
-         */
-        val paramSyms = tpe.paramNames.lazyZip(tpe.paramTypes).map { (name, paramType) =>
-          TermSymbol
-            .createNotDeclaration(name, this)
-            .withFlags(EmptyFlagSet, privateWithin = None)
-            .withDeclaredType(paramType)
-        }
-        Left(paramSyms) :: autoComputeParamSymss(tpe.resultType)
+      setParamSymss(autoComputeParamSymss(declaredType, termParamFlags = EmptyFlagSet))
+
+    private[tastyquery] final def autoFillParamSymss(termParamFlags: FlagSet): this.type =
+      setParamSymss(autoComputeParamSymss(declaredType, termParamFlags))
+
+    private def autoComputeParamSymss(tpe: TypeOrMethodic, termParamFlags: FlagSet): List[ParamSymbolsClause] =
+      tpe match
+        case tpe: MethodType =>
+          /* For term params, we do not instantiate the paramTypes.
+           * We only use autoFillParamSymss for Java definitions, which do not
+           * support term param references at all, and from Definitions, which
+           * does not use that capability in the term param bounds.
+           */
+          val paramSyms = tpe.paramNames.lazyZip(tpe.paramTypes).map { (name, paramType) =>
+            TermSymbol
+              .createNotDeclaration(name, this)
+              .withFlags(termParamFlags, privateWithin = None)
+              .withDeclaredType(paramType)
+          }
+          Left(paramSyms) :: autoComputeParamSymss(tpe.resultType, termParamFlags)
 
-      case tpe: PolyType =>
-        val paramSyms = tpe.paramNames.map { name =>
-          LocalTypeParamSymbol
-            .create(name, this)
-            .withFlags(EmptyFlagSet, privateWithin = None)
-        }
-        val paramSymRefs = paramSyms.map(_.localRef)
-        def subst(t: TypeOrMethodic): t.ThisTypeMappableType =
-          Substituters.substLocalBoundParams(t, tpe, paramSymRefs)
-        for (paramSym, paramTypeBounds) <- paramSyms.lazyZip(tpe.paramTypeBounds) do
-          paramSym.setDeclaredBounds(paramTypeBounds.mapBounds(subst(_)))
-        Right(paramSyms) :: autoComputeParamSymss(subst(tpe.resultType))
-
-      case tpe: Type =>
-        Nil
+        case tpe: PolyType =>
+          val paramSyms = tpe.paramNames.map { name =>
+            LocalTypeParamSymbol
+              .create(name, this)
+              .withFlags(EmptyFlagSet, privateWithin = None)
+          }
+          val paramSymRefs = paramSyms.map(_.localRef)
+          def subst(t: TypeOrMethodic): t.ThisTypeMappableType =
+            Substituters.substLocalBoundParams(t, tpe, paramSymRefs)
+          for (paramSym, paramTypeBounds) <- paramSyms.lazyZip(tpe.paramTypeBounds) do
+            paramSym.setDeclaredBounds(paramTypeBounds.mapBounds(subst(_)))
+          Right(paramSyms) :: autoComputeParamSymss(subst(tpe.resultType), termParamFlags)
+
+        case tpe: Type =>
+          Nil
     end autoComputeParamSymss
 
     def paramSymss: List[ParamSymbolsClause] =

test-sources/src/main/scala/simple_trees/PredefMethods.scala

@@ -0,0 +1,15 @@
+package simple_trees
+
+object PredefMethods:
+  def test(): Unit =
+    val x = valueOf[5]
+    assert(x == 5)
+
+    val obj: List[Int] | Null = List(1, 2)
+    assert(obj.nn.size == 2, "with message")
+    assert(Predef.eq(obj)(obj))
+    assert(Predef.ne(obj)(List(1, 2)))
+
+    println(summon[DummyImplicit])
+  end test
+end PredefMethods