anotther compiler inference bug andlyng.io.console improvements

lynglib/src/commonMain/kotlin/net/sergeych/lyng/Compiler.kt

@@ -4674,6 +4674,7 @@ class Compiler(
                 ?: nameObjClass[ref.name]
                 ?: resolveClassByName(ref.name)
         }
+        is ImplicitThisMemberRef -> resolveReceiverClassForMember(ref)
         is ClassScopeMemberRef -> {
             val targetClass = resolveClassByName(ref.ownerClassName()) ?: return null
             inferFieldReturnClass(targetClass, ref.name)
@@ -4728,6 +4729,15 @@ class Compiler(
             is FastLocalVarRef -> nameTypeDecl[ref.name]
                 ?: lookupLocalTypeDeclByName(ref.name)
                 ?: seedTypeDeclByName(ref.name)
+            is ImplicitThisMemberRef -> {
+                val typeName = ref.preferredThisTypeName() ?: currentImplicitThisTypeName()
+                val targetClass = typeName?.let { resolveClassByName(it) } ?: return null
+                targetClass.getInstanceMemberOrNull(ref.name, includeAbstract = true)?.typeDecl?.let { return it }
+                classFieldTypesByName[targetClass.className]?.get(ref.name)
+                    ?.let { return TypeDecl.Simple(it.className, false) }
+                classMethodReturnTypeDeclByName[targetClass.className]?.get(ref.name)?.let { return it }
+                null
+            }
             is FieldRef -> {
                 val targetDecl = resolveReceiverTypeDecl(ref.target) ?: return null
                 val targetClass = resolveTypeDeclObjClass(targetDecl) ?: resolveReceiverClassForMember(ref.target)
@@ -7388,6 +7398,15 @@ class Compiler(
                 val mutable = param.accessType?.isMutable ?: false
                 declareSlotNameIn(classSlotPlan, param.name, mutable, isDelegated = false)
             }
+            constructorArgsDeclaration?.let { ctorDecl ->
+                val classParamTypeMap = slotTypeByScopeId.getOrPut(classSlotPlan.id) { mutableMapOf() }
+                val classParamTypeDeclMap = slotTypeDeclByScopeId.getOrPut(classSlotPlan.id) { mutableMapOf() }
+                for (param in ctorDecl.params) {
+                    val slot = classSlotPlan.slots[param.name]?.index ?: continue
+                    classParamTypeDeclMap[slot] = param.type
+                    resolveTypeDeclObjClass(param.type)?.let { classParamTypeMap[slot] = it }
+                }
+            }
             val ctorForcedLocalSlots = LinkedHashMap<String, Int>()
             if (constructorArgsDeclaration != null) {
                 val ctorDecl = constructorArgsDeclaration
@@ -8873,6 +8892,7 @@ class Compiler(
                 val targetClass = resolveReceiverClassForMember(directRef.target)
                 inferFieldReturnClass(targetClass, directRef.name)
             }
+            is ImplicitThisMemberRef -> resolveReceiverClassForMember(directRef)
             is CallRef -> {
                 val target = directRef.target
                 when {

lynglib/src/commonTest/kotlin/InferredCtorFieldIntRegressionTest.kt

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+import kotlinx.coroutines.test.runTest
+import net.sergeych.lyng.eval
+import kotlin.test.Test
+
+class InferredCtorFieldIntRegressionTest {
+
+    @Test
+    fun inferredIntFieldsFromCtorParamsStayIntInsideTypedCalls() = runTest {
+        eval(
+            """
+            class GameState(
+                pieceId0: Int,
+                nextId0: Int,
+                next2Id0: Int,
+                px0: Int,
+                py0: Int,
+            ) {
+                var pieceId = pieceId0
+                var nextId = nextId0
+                var next2Id = next2Id0
+                var rot = 0
+                var px = px0
+                var py = py0
+                var score = 0
+                var totalLines = 0
+                var level = 1
+                var running = true
+                var gameOver = false
+                var paused = false
+            }
+
+            fun canPlace(board: List<List<Int>>, boardW: Int, boardH: Int, pieceId: Int, rot: Int, px: Int, py: Int): Bool {
+                true
+            }
+
+            val board: List<List<Int>> = []
+            val boardW = 10
+            val boardH = 20
+
+            fun applyKeyInput(s: GameState, key: String) {
+                if (key == "ArrowLeft") {
+                    if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px - 1, s.py) == true) s.px--
+                }
+            }
+
+            val s = GameState(1, 2, 3, 4, 5)
+            applyKeyInput(s, "ArrowLeft")
+            assertEquals(3, s.px)
+            """.trimIndent()
+        )
+    }
+}