[NI] Use projected type for constraint like Cap(out A) <: out @Exact T

This is an implicit semantics of Exact annotation

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/inference/components/AbstractTypeCheckerContextForConstraintSystem.kt

@@ -57,8 +57,10 @@ abstract class AbstractTypeCheckerContextForConstraintSystem : AbstractTypeCheck
         val hasExact = subType.isTypeVariableWithExact() || superType.isTypeVariableWithExact()
 
         // we should strip annotation's because we have incorporation operation and they should be not affected
-        val mySubType = if (hasExact) subType.removeExactAnnotation() else subType
-        val mySuperType = if (hasExact) superType.removeExactAnnotation() else superType
+        val mySubType =
+            if (hasExact) extractTypeForProjectedType(subType, out = true) ?: subType.removeExactAnnotation() else subType
+        val mySuperType =
+            if (hasExact) extractTypeForProjectedType(superType, out = false) ?: superType.removeExactAnnotation() else superType
 
         val result = internalAddSubtypeConstraint(mySubType, mySuperType)
         if (!hasExact) return result
@@ -69,6 +71,20 @@ abstract class AbstractTypeCheckerContextForConstraintSystem : AbstractTypeCheck
         return (result ?: true) && (result2 ?: true)
     }
 
+    private fun extractTypeForProjectedType(type: KotlinTypeMarker, out: Boolean): KotlinTypeMarker? {
+        val typeMarker = type.asSimpleType()?.asCapturedType() ?: return null
+
+        val projection = typeMarker.typeConstructorProjection()
+        if (projection.isStarProjection()) return null
+
+
+        return when (projection.getVariance()) {
+            TypeVariance.IN -> if (!out) typeMarker.lowerType() ?: projection.getType() else null
+            TypeVariance.OUT -> if (out) projection.getType() else null
+            TypeVariance.INV -> null
+        }
+    }
+
     private fun KotlinTypeMarker.isTypeVariableWithExact() =
         hasExactAnnotation() && anyBound(this@AbstractTypeCheckerContextForConstraintSystem::isMyTypeVariable)
 

compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt

@@ -0,0 +1,42 @@
+// WITH_RUNTIME
+// KJS_WITH_FULL_RUNTIME
+// IGNORE_BACKEND_FIR: JVM_IR
+
+import kotlin.test.*
+
+class ValByMapExtensionsTest {
+    val map: Map<String, String> = hashMapOf("a" to "all", "b" to "bar", "c" to "code")
+    val genericMap = mapOf<String, Any?>("i" to 1, "x" to 1.0)
+    val mmapOut: MutableMap<String, out String> = mutableMapOf("g" to "out", "g1" to "in")
+    val genericMmapOut: MutableMap<String, out Any?> = mmapOut
+
+    val a by map
+    val b: String by map
+    val c: Any by map
+    val d: String? by map
+    val e: String by map.withDefault { "default" }
+    val f: String? by map.withDefault { null }
+    val g: String by mmapOut
+    val g1: String by genericMmapOut
+
+    val i: Int by genericMap
+    val x: Double by genericMap
+
+    fun doTest() {
+        assertEquals("all", a)
+        assertEquals("bar", b)
+        assertEquals("code", c)
+        assertEquals("default", e)
+        assertEquals(null, f)
+        assertEquals("out", g)
+        assertEquals("in", g1)
+        assertEquals(1, i)
+        assertEquals(1.0, x)
+        assertFailsWith<NoSuchElementException> { d }
+    }
+}
+
+fun box(): String {
+    ValByMapExtensionsTest().doTest()
+    return "OK"
+}

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -9849,6 +9849,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt");
         }
 
+        @TestMetadata("valByMapDelegatedProperty.kt")
+        public void testValByMapDelegatedProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt");
+        }
+
         @TestMetadata("valInInnerClass.kt")
         public void testValInInnerClass() throws Exception {
             runTest("compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt");

compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -9849,6 +9849,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt");
         }
 
+        @TestMetadata("valByMapDelegatedProperty.kt")
+        public void testValByMapDelegatedProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt");
+        }
+
         @TestMetadata("valInInnerClass.kt")
         public void testValInInnerClass() throws Exception {
             runTest("compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt");

compiler/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java

@@ -8724,6 +8724,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt");
         }
 
+        @TestMetadata("valByMapDelegatedProperty.kt")
+        public void testValByMapDelegatedProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt");
+        }
+
         @TestMetadata("valInInnerClass.kt")
         public void testValInInnerClass() throws Exception {
             runTest("compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt");

compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java

@@ -8724,6 +8724,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt");
         }
 
+        @TestMetadata("valByMapDelegatedProperty.kt")
+        public void testValByMapDelegatedProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt");
+        }
+
         @TestMetadata("valInInnerClass.kt")
         public void testValInInnerClass() throws Exception {
             runTest("compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java

@@ -7479,6 +7479,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt");
         }
 
+        @TestMetadata("valByMapDelegatedProperty.kt")
+        public void testValByMapDelegatedProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt");
+        }
+
         @TestMetadata("valInInnerClass.kt")
         public void testValInInnerClass() throws Exception {
             runTest("compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -7479,6 +7479,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt");
         }
 
+        @TestMetadata("valByMapDelegatedProperty.kt")
+        public void testValByMapDelegatedProperty() throws Exception {
+            runTest("compiler/testData/codegen/box/delegatedProperty/valByMapDelegatedProperty.kt");
+        }
+
         @TestMetadata("valInInnerClass.kt")
         public void testValInInnerClass() throws Exception {
             runTest("compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt");