bump changes

aqua-src/antithesis.aqua

@@ -2,11 +2,23 @@ service Console("run-console"):
     print(s: string)
 
 func main():
-    ss: *string
-    dd: *string
-    peerId = "peerId"
-    relay = "relay"
-    parsec s <- ss on peerId via relay:
-      Console.print(s)
-    for d <- dd par:
-      Console.print(d)
+    -- NewConsole = Console.??id??("new id")
+    -- NewConsole.print("")
+
+    Console "new id"
+    NewAb = Ab(print = Console.print)
+
+
+    Console.print("sfre")
+
+    for i <- incr:
+      Console "inside for id"
+      Console.print("sfre")
+
+
+    Console "new id"
+    Console.print("sfre")
+
+    Console "inside for id"
+    -- Console -> ConsoleNew
+    Console.print("sfre")

model/inline/src/main/scala/aqua/model/inline/raw/MakeAbilityRawInliner.scala

@@ -18,7 +18,7 @@ object MakeAbilityRawInliner extends RawInliner[AbilityRaw] {
     fields: NonEmptyMap[String, (ValueModel, Inline)]
   ): State[S, Unit] = {
     for {
-      res <- fields.toNel.traverse {
+      _ <- fields.toNel.traverse {
         case (n, (Ability(abilityName, _, _), _)) =>
           val leftName = AbilityType.fullName(name, n)
           Exports[S].copyWithAbilityPrefix(abilityName, leftName)

model/raw/src/main/scala/aqua/raw/arrow/ArrowRaw.scala

@@ -10,3 +10,8 @@ case class ArrowRaw(
   ret: List[ValueRaw],
   body: RawTag.Tree
 ) extends Raw
+
+// func -internal-():
+       // AssignemntTag(res1, CallArrowRaw("serviceId"))
+//     res1 <- CallArrowRaw("serviceId")
+//     <- res1

model/raw/src/main/scala/aqua/raw/arrow/FuncRaw.scala

@@ -1,6 +1,5 @@
 package aqua.raw.arrow
 
-import aqua.raw.value.ValueRaw
 import aqua.raw.RawPart
 import aqua.types.Type
 

model/raw/src/main/scala/aqua/raw/ops/RawTag.scala

@@ -277,15 +277,6 @@ object EmptyTag extends NoExecTag {
   override def mapValues(f: ValueRaw => ValueRaw): RawTag = this
 }
 
-case class AbilityIdTag(
-  value: ValueRaw,
-  service: String
-) extends NoExecTag {
-
-  override def mapValues(f: ValueRaw => ValueRaw): RawTag =
-    AbilityIdTag(value.map(f), service)
-}
-
 case class PushToStreamTag(operand: ValueRaw, exportTo: Call.Export) extends RawTag {
 
   override def exportsVarNames: Set[String] = Set(exportTo.name)

model/raw/src/main/scala/aqua/raw/value/ValueRaw.scala

@@ -95,6 +95,17 @@ case class ApplyGateRaw(name: String, streamType: StreamType, idx: ValueRaw) ext
   override def varNames: Set[String] = Set(name) ++ idx.varNames
 }
 
+case class ServiceFuncRaw(name: String, baseType: ArrowType) extends ValueRaw {
+  override def map(f: ValueRaw => ValueRaw): ValueRaw = f(this)
+
+  override def renameVars(map: Map[String, String]): ValueRaw =
+    copy(map.getOrElse(name, name))
+
+  override def toString: String = s"var{$name: " + baseType + s"}"
+
+  override def varNames: Set[String] = Set(name)
+}
+
 case class VarRaw(name: String, baseType: Type) extends ValueRaw {
 
   override def map(f: ValueRaw => ValueRaw): ValueRaw = f(this)
@@ -164,8 +175,10 @@ case class MakeStructRaw(fields: NonEmptyMap[String, ValueRaw], structType: Stru
     copy(fields = fields.map(_.renameVars(map)))
 }
 
-case class AbilityRaw(fieldsAndArrows: NonEmptyMap[String, ValueRaw], abilityType: AbilityType)
-    extends ValueRaw {
+case class AbilityRaw(
+  fieldsAndArrows: NonEmptyMap[String, ValueRaw],
+  abilityType: AbilityType
+) extends ValueRaw {
 
   override def baseType: Type = abilityType
 
@@ -234,6 +247,27 @@ object ApplyUnaryOpRaw {
   }
 }
 
+case class ServiceCallDefinitionRaw(
+  name: String,
+  baseType: ArrowType,
+  serviceId: ValueRaw
+) extends ValueRaw {
+  override def `type`: Type = baseType.codomain.uncons.map(_._1).getOrElse(baseType)
+
+  override def map(f: ValueRaw => ValueRaw): ValueRaw =
+    this
+
+  override def varNames: Set[String] = Set.empty
+
+  override def renameVars(map: Map[String, String]): ValueRaw =
+    copy(
+      serviceId = serviceId.renameVars(map)
+    )
+
+  override def toString: String =
+    s"(service calldef ($serviceId $name) $baseType)"
+}
+
 case class CallArrowRaw(
   // TODO: ability should hold a type, not name
   ability: Option[String],

model/src/main/scala/aqua/model/AquaContext.scala

@@ -2,10 +2,9 @@ package aqua.model
 
 import aqua.raw.arrow.FuncRaw
 import aqua.raw.ops.CallArrowRawTag
-import aqua.raw.value.ValueRaw
-import aqua.raw.value.CallArrowRaw
+import aqua.raw.value.{AbilityRaw, CallArrowRaw, LiteralRaw, ValueRaw, VarRaw}
 import aqua.raw.{ConstantRaw, RawContext, RawPart, ServiceRaw, TypeRaw}
-import aqua.types.{StructType, Type}
+import aqua.types.{AbilityType, StructType, Type}
 import cats.Monoid
 import cats.data.NonEmptyMap
 import cats.data.Chain
@@ -140,7 +139,7 @@ object AquaContext extends Logging {
       .get(rawContext)
       .fold {
         logger.trace(s"Compiling ${rawContext.module}, cache has ${cache.size} entries")
-
+        println("raw parts: " + rawContext.parts)
         val (newCtx, newCache) = rawContext.parts
           .foldLeft[(AquaContext, Cache)] {
             // Laziness unefficiency happens here
@@ -165,11 +164,23 @@ object AquaContext extends Logging {
               // Actually this should have no effect, as constants are resolved by semantics
               val (pctx, pcache) = fromRawContext(partContext, ctxCache)
               logger.trace("Got " + c.name + " from raw")
+              val values = c.value match {
+                // it could be only for services with default service ids
+//                case AbilityRaw(fieldsAndArrows, abilityType, Some(LiteralRaw(v, _))) =>
+//                  fieldsAndArrows.flatMap {
+//                    case VarRaw(n, t) =>
+//                      Some(CallArrowRaw(None, AbilityType.fullName(abilityType.name, n), ))
+//                    case _ => None
+//                  }
+                case _ =>
+                  if (c.allowOverrides && pctx.values.contains(c.name)) Map.empty
+                  else Map(c.name -> ValueModel.fromRaw(c.value).resolveWith(pctx.allValues))
+              }
+
               val add =
                 blank
                   .copy(values =
-                    if (c.allowOverrides && pctx.values.contains(c.name)) Map.empty
-                    else Map(c.name -> ValueModel.fromRaw(c.value).resolveWith(pctx.allValues))
+                    values
                   )
 
               (ctx |+| add, pcache)

model/src/main/scala/aqua/model/ValueModel.scala

@@ -48,7 +48,9 @@ object ValueModel {
       VarModel(name, t)
     case LiteralRaw(value, t) =>
       LiteralModel(value, t)
-    case _ => ???
+    case p =>
+      println("catch: " + p)
+      ???
   }
 
   object Ability {

parser/src/main/scala/aqua/parser/expr/func/ArrowExpr.scala

@@ -20,7 +20,7 @@ case class ArrowExpr[F[_]](arrowTypeExpr: ArrowTypeToken[F])
 object ArrowExpr extends Expr.AndIndented {
 
   val funcChildren: List[Expr.Lexem] =
-    AbilityIdExpr ::
+    ServiceIdExpr ::
       PushToStreamExpr ::
       ForExpr ::
       Expr.defer(OnExpr) ::

parser/src/main/scala/aqua/parser/expr/func/ServiceIdExpr.scala

@@ -1,7 +1,7 @@
 package aqua.parser.expr.func
 
 import aqua.parser.Expr
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.parser.lexer.Token.*
 import aqua.parser.lexer.{Ability, NamedTypeToken, ValueToken}
 import aqua.parser.lift.LiftParser
@@ -10,19 +10,19 @@ import cats.{Comonad, ~>}
 import aqua.parser.lift.Span
 import aqua.parser.lift.Span.{P0ToSpan, PToSpan}
 
-case class AbilityIdExpr[F[_]](ability: NamedTypeToken[F], id: ValueToken[F])
-    extends Expr[F](AbilityIdExpr, ability) {
+case class ServiceIdExpr[F[_]](ability: NamedTypeToken[F], id: ValueToken[F])
+    extends Expr[F](ServiceIdExpr, ability) {
   
-  def mapK[K[_]: Comonad](fk: F ~> K): AbilityIdExpr[K] =
+  def mapK[K[_]: Comonad](fk: F ~> K): ServiceIdExpr[K] =
     copy(ability.copy(fk(ability.name)), id.mapK(fk))
   
 }
 
-object AbilityIdExpr extends Expr.Leaf {
+object ServiceIdExpr extends Expr.Leaf {
 
-  override val p: P[AbilityIdExpr[Span.S]] =
+  override val p: P[ServiceIdExpr[Span.S]] =
     ((NamedTypeToken.dotted <* ` `) ~ ValueToken.`value`).map { case (ability, id) =>
-      AbilityIdExpr(ability, id)
+      ServiceIdExpr(ability, id)
     }
 
 }

parser/src/test/scala/aqua/AquaSpec.scala

@@ -118,8 +118,8 @@ trait AquaSpec extends EitherValues {
   def parseUse(str: String): UseFromExpr[Id] =
     UseFromExpr.p.parseAll(str).value.mapK(spanToId)
 
-  def parseAbId(str: String): AbilityIdExpr[Id] =
-    AbilityIdExpr.p.parseAll(str).value.mapK(spanToId)
+  def parseAbId(str: String): ServiceIdExpr[Id] =
+    ServiceIdExpr.p.parseAll(str).value.mapK(spanToId)
 
   def parseOn(str: String): OnExpr[Id] =
     OnExpr.p.parseAll(str).value.mapK(spanToId)

parser/src/test/scala/aqua/parser/FuncExprSpec.scala

@@ -2,7 +2,7 @@ package aqua.parser
 
 import aqua.AquaSpec
 import aqua.parser.expr.*
-import aqua.parser.expr.func.{AbilityIdExpr, ArrowExpr, CallArrowExpr, IfExpr, OnExpr, ReturnExpr}
+import aqua.parser.expr.func.{ServiceIdExpr, ArrowExpr, CallArrowExpr, IfExpr, OnExpr, ReturnExpr}
 import aqua.parser.lexer.{
   ArrowTypeToken,
   BasicTypeToken,
@@ -123,7 +123,7 @@ class FuncExprSpec extends AnyFlatSpec with Matchers with Inside with Inspectors
         )
       )
     )
-    ifBody(1).head.mapK(spanToId) should be(AbilityIdExpr(toNamedType("Peer"), toStr("some id")))
+    ifBody(1).head.mapK(spanToId) should be(ServiceIdExpr(toNamedType("Peer"), toStr("some id")))
     ifBody(2).head.mapK(spanToId) should be(
       CallArrowExpr(Nil, CallArrowToken("call", List(toBool(true))))
     )

parser/src/test/scala/aqua/parser/ServiceIdExprSpec.scala

@@ -1,31 +1,31 @@
 package aqua.parser
 
 import aqua.AquaSpec
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.parser.lexer.LiteralToken
 import aqua.types.LiteralType
 import cats.Id
 import org.scalatest.flatspec.AnyFlatSpec
 import org.scalatest.matchers.should.Matchers
 
-class AbilityIdExprSpec extends AnyFlatSpec with Matchers with AquaSpec {
+class ServiceIdExprSpec extends AnyFlatSpec with Matchers with AquaSpec {
   import AquaSpec._
 
   "abilities" should "be parsed" in {
     parseAbId("Ab a") should be(
-      AbilityIdExpr[Id](toNamedType("Ab"), toVar("a"))
+      ServiceIdExpr[Id](toNamedType("Ab"), toVar("a"))
     )
 
     parseAbId("Ab \"a\"") should be(
-      AbilityIdExpr[Id](toNamedType("Ab"), LiteralToken[Id]("\"a\"", LiteralType.string))
+      ServiceIdExpr[Id](toNamedType("Ab"), LiteralToken[Id]("\"a\"", LiteralType.string))
     )
 
     parseAbId("Ab 1") should be(
-      AbilityIdExpr[Id](toNamedType("Ab"), toNumber(1))
+      ServiceIdExpr[Id](toNamedType("Ab"), toNumber(1))
     )
 
     parseAbId("Ab a.id") should be(
-      AbilityIdExpr[Id](toNamedType("Ab"), toVarLambda("a", List("id")))
+      ServiceIdExpr[Id](toNamedType("Ab"), toVarLambda("a", List("id")))
     )
   }
 

parser/src/test/scala/aqua/parser/head/FromSpec.scala

@@ -1,7 +1,7 @@
 package aqua.parser.head
 
 import aqua.AquaSpec
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.parser.lexer.{LiteralToken, Token}
 import aqua.parser.lift.LiftParser.Implicits.*
 import aqua.types.LiteralType

parser/src/test/scala/aqua/parser/head/ImportFromSpec.scala

@@ -1,7 +1,7 @@
 package aqua.parser.head
 
 import aqua.AquaSpec
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.parser.lexer.{LiteralToken, Token}
 import aqua.parser.lift.LiftParser.Implicits.*
 import aqua.types.LiteralType

parser/src/test/scala/aqua/parser/head/ModuleSpec.scala

@@ -1,7 +1,7 @@
 package aqua.parser.head
 
 import aqua.AquaSpec
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.parser.lexer.{LiteralToken, Token}
 import aqua.types.LiteralType
 import cats.Id

parser/src/test/scala/aqua/parser/head/UseSpec.scala

@@ -1,7 +1,7 @@
 package aqua.parser.head
 
 import aqua.AquaSpec
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.parser.lexer.{LiteralToken, Token}
 import aqua.parser.lift.LiftParser.Implicits.*
 import aqua.types.LiteralType

semantics/src/main/scala/aqua/semantics/ExprSem.scala

@@ -27,7 +27,7 @@ object ExprSem {
     L: LocationsAlgebra[S, G]
   ): Prog[G, Raw] =
     expr match {
-      case expr: AbilityIdExpr[S] => new AbilityIdSem(expr).program[G]
+      case expr: ServiceIdExpr[S] => new ServiceIdSem(expr).program[G]
       case expr: AssignmentExpr[S] => new AssignmentSem(expr).program[G]
       case expr: PushToStreamExpr[S] => new PushToStreamSem(expr).program[G]
       case expr: AliasExpr[S] => new AliasSem(expr).program[G]

semantics/src/main/scala/aqua/semantics/expr/ServiceSem.scala

@@ -1,21 +1,119 @@
 package aqua.semantics.expr
 
 import aqua.parser.expr.ServiceExpr
-import aqua.raw.{Raw, ServiceRaw}
+import aqua.raw.arrow.{ArrowRaw, FuncRaw}
+import aqua.raw.ops.CallArrowRawTag
+import aqua.raw.value.{AbilityRaw, CallArrowRaw, ValueRaw, VarRaw}
+import aqua.raw.{ConstantRaw, Raw, RawPart, ServiceRaw, TypeRaw}
 import aqua.semantics.Prog
 import aqua.semantics.rules.ValuesAlgebra
 import aqua.semantics.rules.abilities.AbilitiesAlgebra
 import aqua.semantics.rules.definitions.DefinitionsAlgebra
 import aqua.semantics.rules.names.NamesAlgebra
 import aqua.semantics.rules.types.TypesAlgebra
+import aqua.types.{AbilityType, ArrowType}
 import cats.syntax.apply.*
 import cats.syntax.flatMap.*
 import cats.syntax.functor.*
 import cats.syntax.applicative.*
+import cats.syntax.traverse.*
 import cats.Monad
+import cats.data.Chain
 
 class ServiceSem[S[_]](val expr: ServiceExpr[S]) extends AnyVal {
 
+  def createAbilityValue[Alg[_]: Monad](id: ValueRaw, abilityType: AbilityType)(implicit
+    A: AbilitiesAlgebra[S, Alg],
+    N: NamesAlgebra[S, Alg],
+    T: TypesAlgebra[S, Alg],
+    V: ValuesAlgebra[S, Alg],
+    D: DefinitionsAlgebra[S, Alg]
+  ) = {}
+
+  // service AbServType("defaultId"):
+  // ...
+
+
+  // AbServType(func1 = ...'defaultId', func2 = ...'defaultId')
+  // AbServType.func1()
+
+  // VarRaw(Serv.-default-id-, "defaultId")
+  // Serv "new id"
+  // VarRaw(Serv.-default-id-, "new id")
+
+  /*
+      ability Ab:
+        fff: string -> string
+        eee: string -> string
+
+      service Serv:
+        fff: string -> string
+
+      service Eserv:
+        eee: string -> string
+
+      func nested{Ab}:
+        ...
+
+      someNewFunc{AbVal}():
+        Serv "freferf"
+        AbVal.fff()
+  
+        AbVal.eee()
+
+      func main():
+        
+
+        Serv "aaa"
+        Serv.fff()
+
+        Eserv "bbb"
+
+        Serv "zzz"
+        Serv.fff()
+
+        nested{Serv}()
+        AbVal = Ab(fff = Serv.fff, Eserv.eee)
+        someNewFunc{AbVal}()
+   */
+
+
+
+  // ...
+  /*
+     func main():
+       AbServType "some id"
+       AbServType(func1 = ...'some id', func2 = ...'some id')
+
+       CallServiceModel('some id')
+
+       AbServType "some id2"
+       AbServType(func1 = ...'some id2', func2 = ...'some id2')
+
+       VarRaw(name, arrowType) -> Arrows FuncRaw(name, arrowType)
+                                  FuncRaw(name, arrowType, body = ServiceCall)
+   */
+
+  private def toFuncRaw(name: String, abilityName: String, serviceId: ValueRaw, t: ArrowType): FuncRaw = {
+    val args = t.domain.toLabelledList().map(st => VarRaw(st._1, st._2))
+    val rett = t.codomain.toList.headOption
+    val ret = rett.map(t => VarRaw("ret", t))
+    val raw = CallArrowRaw(None, name, args, t, Some(serviceId))
+    val body = ret match {
+      case Some(vr) =>
+        val callExpr = aqua.raw.ops.Call.Export(vr.name, vr.baseType)
+        CallArrowRawTag(callExpr :: Nil, raw)
+
+      case None =>
+        CallArrowRawTag(Nil, raw)
+
+    }
+
+    val arrow = ArrowRaw(t, ret.toList, body.leaf)
+    val fullName = AbilityType.fullName(abilityName, name)
+    FuncRaw(fullName, arrow)
+  }
+
   def program[Alg[_]: Monad](implicit
     A: AbilitiesAlgebra[S, Alg],
     N: NamesAlgebra[S, Alg],
@@ -23,31 +121,31 @@ class ServiceSem[S[_]](val expr: ServiceExpr[S]) extends AnyVal {
     V: ValuesAlgebra[S, Alg],
     D: DefinitionsAlgebra[S, Alg]
   ): Prog[Alg, Raw] =
-    Prog.after(
-      _ =>
+    Prog.after(_ =>
       D.purgeArrows(expr.name).flatMap {
         case Some(nel) =>
-            val arrows = nel.map(kv => kv._1.value -> (kv._1, kv._2)).toNem
+          val arrows = nel.map(kv => kv._1.value -> kv._2).toNem
+          val abType = AbilityType(expr.name.value, arrows)
           for {
+            _ <- T.defineNamedType(expr.name, abType)
             defaultId <- expr.id
               .map(v => V.valueToRaw(v))
               .getOrElse(None.pure[Alg])
-              defineResult <- A.defineService(
-                expr.name,
-                arrows,
-                defaultId
-              )
-              _ <- (expr.id zip defaultId)
-                .fold(().pure[Alg])(idV =>
-                  (V.ensureIsString(idV._1) >> A.setServiceId(expr.name, idV._1, idV._2)).map(_ =>
-                    ()
-                  )
-                )
-            } yield
-              if (defineResult) {
-                ServiceRaw(expr.name.value, arrows.map(_._2), defaultId)
-              } else Raw.empty("Service not created due to validation errors")
+            _ <- expr.id.traverse(id => V.ensureIsString(id))
 
+            serviceArrows = defaultId match {
+              case Some(did) =>
+                val funcs = arrows.mapBoth {
+                  case (funcName, t) => funcName -> toFuncRaw(funcName, expr.name.value, did, t)
+                }
+                funcs.toNel.toList.map(_._2)
+              case None => Nil
+            }
+          } yield {
+            println("serviceArrows: " + serviceArrows)
+            val tr = TypeRaw(expr.name.value, abType)
+            RawPart.Parts(Chain.fromSeq(serviceArrows) :+ tr)
+          }
         case None =>
           Raw.error("Service has no arrows, fails").pure[Alg]
 

semantics/src/main/scala/aqua/semantics/expr/func/ServiceIdSem.scala

@@ -1,8 +1,8 @@
 package aqua.semantics.expr.func
 
+import aqua.parser.expr.func.ServiceIdExpr
 import aqua.raw.Raw
-import aqua.raw.ops.AbilityIdTag
-import aqua.parser.expr.func.AbilityIdExpr
+import aqua.raw.ops.EmptyTag
 import aqua.semantics.Prog
 import aqua.semantics.rules.ValuesAlgebra
 import aqua.semantics.rules.abilities.AbilitiesAlgebra
@@ -11,7 +11,7 @@ import cats.syntax.applicative.*
 import cats.syntax.flatMap.*
 import cats.syntax.functor.*
 
-class AbilityIdSem[S[_]](val expr: AbilityIdExpr[S]) extends AnyVal {
+class ServiceIdSem[S[_]](val expr: ServiceIdExpr[S]) extends AnyVal {
 
   def program[Alg[_]: Monad](implicit
     A: AbilitiesAlgebra[S, Alg],
@@ -21,10 +21,7 @@ class AbilityIdSem[S[_]](val expr: AbilityIdExpr[S]) extends AnyVal {
       expr.id
     ) >>= {
       case Some(id) =>
-        A.setServiceId(expr.ability, expr.id, id) as (AbilityIdTag(
-          id,
-          expr.ability.value
-        ).funcOpLeaf: Raw)
+        A.setServiceId(expr.ability, expr.id, id) as (EmptyTag.funcOpLeaf: Raw)
       case _ => Raw.error("Cannot resolve ability ID").pure[Alg]
     }
 }

semantics/src/main/scala/aqua/semantics/rules/ValuesAlgebra.scala

@@ -4,11 +4,13 @@ import aqua.parser.lexer.*
 import aqua.parser.lexer.InfixToken.{BoolOp, CmpOp, EqOp, MathOp, Op as InfOp}
 import aqua.parser.lexer.PrefixToken.Op as PrefOp
 import aqua.raw.value.*
+import aqua.raw.ServiceRaw
+import aqua.raw.arrow.{ArrowRaw, FuncRaw}
+import aqua.raw.ops.{AssignmentTag, CallArrowRawTag}
 import aqua.semantics.rules.abilities.AbilitiesAlgebra
 import aqua.semantics.rules.names.NamesAlgebra
 import aqua.semantics.rules.types.TypesAlgebra
 import aqua.types.*
-
 import cats.Monad
 import cats.data.Chain
 import cats.syntax.applicative.*
@@ -48,6 +50,8 @@ class ValuesAlgebra[S[_], Alg[_]: Monad](implicit
   def resolveType(v: ValueToken[S]): Alg[Option[Type]] =
     valueToRaw(v).map(_.map(_.`type`))
 
+  //
+
   private def resolveSingleProperty(rootType: Type, op: PropertyOp[S]): Alg[Option[PropertyRaw]] =
     op match {
       case op: IntoField[S] =>
@@ -81,11 +85,23 @@ class ValuesAlgebra[S[_], Alg[_]: Monad](implicit
         LiteralRaw(l.value, t).some.pure[Alg]
 
       case VarToken(name) =>
-        N.read(name).flatMap {
+        N.read(name, false).flatMap {
           case Some(t) =>
             VarRaw(name.value, t).some.pure[Alg]
           case None =>
-            None.pure[Alg]
+            A.getServiceByName(name).flatMap {
+              case Some(ServiceRaw(sName, arrows, Some(did))) =>
+                val t = AbilityType(sName, arrows)
+
+                N.define(name, t).map(_ => VarRaw(name.value, t).some)
+              case _ =>
+                // to report an error
+                N.read(name).flatMap {
+                  case Some(t) => VarRaw(name.value, t).some.pure[Alg]
+                  case None => None.pure[Alg]
+                }
+            }
+
         }
 
       case prop @ PropertyToken(value, properties) =>
@@ -121,10 +137,10 @@ class ValuesAlgebra[S[_], Alg[_]: Monad](implicit
                         StructType(typeName.value, rf.map(_.`type`)),
                         Some(MakeStructRaw(rf, struct))
                       )
-                    case scope @ AbilityType(_, _) =>
+                    case ability @ AbilityType(_, _) =>
                       (
                         AbilityType(typeName.value, rf.map(_.`type`)),
-                        Some(AbilityRaw(rf, scope))
+                        Some(AbilityRaw(rf, ability))
                       )
                   }
                 )
@@ -339,7 +355,7 @@ class ValuesAlgebra[S[_], Alg[_]: Monad](implicit
                 callArrowFromAbility(ab.asName, at, callArrow.funcName).pure
               case _ =>
                 (A.getArrow(ab, callArrow.funcName), A.getServiceId(ab)).mapN {
-                  case (Some(at), Right(sid)) =>
+                  case (Some(at), Right(sid, name)) =>
                     CallArrowRaw
                       .service(
                         abilityName = ab.value,

semantics/src/main/scala/aqua/semantics/rules/abilities/AbilitiesAlgebra.scala

@@ -1,6 +1,7 @@
 package aqua.semantics.rules.abilities
 
-import aqua.parser.lexer.{Ability, NamedTypeToken, Name, Token, ValueToken}
+import aqua.parser.lexer.{Ability, Name, NamedTypeToken, Token, ValueToken}
+import aqua.raw.ServiceRaw
 import aqua.raw.value.ValueRaw
 import aqua.types.ArrowType
 import cats.InjectK
@@ -19,6 +20,9 @@ trait AbilitiesAlgebra[S[_], Alg[_]] {
   def setServiceId(name: NamedTypeToken[S], id: ValueToken[S], vm: ValueRaw): Alg[Boolean]
 
   def getServiceId(name: NamedTypeToken[S]): Alg[Either[Boolean, ValueRaw]]
+  def getServiceIdByName(name: String): Alg[Option[ValueRaw]]
+  
+  def getServiceByName(name: Name[S]): Alg[Option[ServiceRaw]]
 
   def beginScope(token: Token[S]): Alg[Unit]
 

semantics/src/main/scala/aqua/semantics/rules/abilities/AbilitiesInterpreter.scala

@@ -6,7 +6,7 @@ import aqua.raw.{RawContext, ServiceRaw}
 import aqua.semantics.Levenshtein
 import aqua.semantics.rules.errors.ReportErrors
 import aqua.semantics.rules.locations.LocationsAlgebra
-import aqua.semantics.rules.{StackInterpreter, abilities}
+import aqua.semantics.rules.{abilities, StackInterpreter}
 import aqua.types.ArrowType
 import cats.data.{NonEmptyMap, State}
 import cats.syntax.functor.*
@@ -41,10 +41,14 @@ class AbilitiesInterpreter[S[_], X](implicit
 
         }
       case None =>
-        arrows.toNel.map(_._2).collect {
+        arrows.toNel
+          .map(_._2)
+          .collect {
             case (n, arr) if arr.codomain.length > 1 =>
               report(n, "Service functions cannot have multiple results")
-        }.sequence.flatMap{ _ =>
+          }
+          .sequence
+          .flatMap { _ =>
             modify(s =>
               s.copy(
                 services = s.services
@@ -116,6 +120,22 @@ class AbilitiesInterpreter[S[_], X](implicit
         report(name, "Service with this name is not registered, can't set its ID").as(false)
     }
 
+  def getServiceIdByName(name: String): SX[Option[ValueRaw]] =
+    getService(name).flatMap {
+      case Some(_) =>
+        getState.map(st =>
+          st.stack
+            .flatMap(_.serviceIds.get(name).map(_._2))
+            .headOption orElse st.rootServiceIds
+            .get(
+              name
+            )
+            .map(_._2) orElse st.services.get(name).flatMap(_.defaultId)
+        )
+      case None =>
+        State.pure(None)
+    }
+
   override def getServiceId(name: NamedTypeToken[S]): SX[Either[Boolean, ValueRaw]] =
     getService(name.value).flatMap {
       case Some(_) =>
@@ -147,6 +167,9 @@ class AbilitiesInterpreter[S[_], X](implicit
         }
     }
 
+  def getServiceByName(name: Name[S]): SX[Option[ServiceRaw]] =
+    getService(name.value)
+
   override def beginScope(token: Token[S]): SX[Unit] =
     stackInt.beginScope(AbilitiesState.Frame[S](token))
 

semantics/src/main/scala/aqua/semantics/rules/names/NamesAlgebra.scala

@@ -10,7 +10,11 @@ trait NamesAlgebra[S[_], Alg[_]] {
 
   def readArrow(name: Name[S]): Alg[Option[ArrowType]]
 
-  def define(name: Name[S], `type`: Type): Alg[Boolean]
+  /**
+   *
+   * @param canOverride internal flag that is used for overriding services by serviceId
+   */
+  def define(name: Name[S], `type`: Type, canOverride: Boolean = false): Alg[Boolean]
 
   def derive(name: Name[S], `type`: Type, derivedFrom: Set[String]): Alg[Boolean]
 

semantics/src/main/scala/aqua/semantics/rules/names/NamesInterpreter.scala

@@ -84,17 +84,19 @@ class NamesInterpreter[S[_], X](implicit
         .headOption orElse st.rootArrows.get(name)
     }
 
-  override def define(name: Name[S], `type`: Type): SX[Boolean] =
+  override def define(name: Name[S], `type`: Type, canOverride: Boolean = false): SX[Boolean] =
     readName(name.value).flatMap {
-      case Some(_) =>
+      case Some(_) if !canOverride =>
         getState.map(_.definitions.get(name.value).exists(_ == name)).flatMap {
           case true => State.pure(false)
           case false => report(name, "This name was already defined in the scope").as(false)
         }
-      case None =>
+      case _ =>
         mapStackHead(
-          report(name, "Cannot define a variable in the root scope")
-            .as(false)
+          getState.map { st =>
+            st.rootValues.updated(name.value, `type`)
+            true
+          }
         )(fr => fr.addName(name, `type`) -> true).flatTap(_ => locations.addToken(name.value, name))
     }