Fix access to scoped symbol table when inserting implicit casts to IR

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/transformations/InsertImplicitCasts.kt

@@ -21,10 +21,7 @@ import org.jetbrains.kotlin.descriptors.ClassifierDescriptor
 import org.jetbrains.kotlin.descriptors.TypeParameterDescriptor
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.IrStatement
-import org.jetbrains.kotlin.ir.declarations.IrField
+import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.IrFunction
-import org.jetbrains.kotlin.ir.declarations.IrTypeParametersContainer
-import org.jetbrains.kotlin.ir.declarations.IrVariable
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.expressions.impl.IrTypeOperatorCallImpl
 import org.jetbrains.kotlin.ir.symbols.IrTypeParameterSymbol
@@ -153,6 +150,11 @@ class InsertImplicitCasts(private val builtIns: KotlinBuiltIns, private val symb
             }
         }
 
+    override fun visitClass(declaration: IrClass): IrStatement =
+        runInTypeParameterScope(declaration) {
+            super.visitClass(declaration)
+        }
+
     override fun visitWhen(expression: IrWhen): IrExpression =
         expression.transformPostfix {
             for (irBranch in branches) {

compiler/testData/ir/irText/expressions/implicitCastToTypeParameter.kt

@@ -4,4 +4,13 @@ inline fun <reified T : Any> Any.test1(): T? =
 interface Foo<T>
 
 inline val <reified T : Any> Foo<T>.asT: T?
-    get() = if (this is T) this else null
+    get() = if (this is T) this else null
+
+class Bar<T> {
+    fun test(arg: Any) {
+        arg as T
+        useT(arg)
+    }
+
+    fun useT(t: T) {}
+}

compiler/testData/ir/irText/expressions/implicitCastToTypeParameter.txt

@@ -56,3 +56,45 @@ FILE fqName:<root> fileName:/implicitCastToTypeParameter.kt
             BRANCH
               if: CONST Boolean type=kotlin.Boolean value=true
               then: CONST Null type=kotlin.Nothing? value=null
+  CLASS CLASS name:Bar modality:FINAL visibility:public flags:
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:Bar<T> flags:
+    superClasses:
+      CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Any modality:OPEN visibility:public flags:
+    TYPE_PARAMETER name:T index:0 variance: upperBounds:[kotlin.Any?]
+      superClassifiers:
+        CLASS IR_EXTERNAL_DECLARATION_STUB CLASS name:Any modality:OPEN visibility:public flags:
+    CONSTRUCTOR visibility:public <> () returnType:Bar<T> flags:
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
+        INSTANCE_INITIALIZER_CALL classDescriptor='Bar'
+    FUN name:test visibility:public modality:FINAL <> ($this:Bar<T>, arg:kotlin.Any) returnType:Unit flags:
+      $this: VALUE_PARAMETER name:<this> type:Bar<T> flags:
+      VALUE_PARAMETER name:arg index:0 type:kotlin.Any flags:
+      BLOCK_BODY
+        TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
+          typeOperand: CLASS IR_EXTERNAL_DECLARATION_STUB OBJECT name:Unit modality:FINAL visibility:public flags:
+          TYPE_OP type=T origin=CAST typeOperand=T
+            typeOperand: TYPE_PARAMETER name:T index:0 variance: upperBounds:[kotlin.Any?]
+            GET_VAR 'value-parameter arg: Any' type=kotlin.Any origin=null
+        CALL 'useT(T): Unit' type=kotlin.Unit origin=null
+          $this: GET_VAR 'this@Bar: Bar<T>' type=Bar<T> origin=null
+          t: TYPE_OP type=T origin=IMPLICIT_CAST typeOperand=T
+            typeOperand: TYPE_PARAMETER name:T index:0 variance: upperBounds:[kotlin.Any?]
+            GET_VAR 'value-parameter arg: Any' type=kotlin.Any origin=null
+    FUN name:useT visibility:public modality:FINAL <> ($this:Bar<T>, t:T) returnType:Unit flags:
+      $this: VALUE_PARAMETER name:<this> type:Bar<T> flags:
+      VALUE_PARAMETER name:t index:0 type:T flags:
+      BLOCK_BODY
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
+      overridden:
+        FUN IR_EXTERNAL_DECLARATION_STUB name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:Boolean flags:
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any? flags:
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:Int flags:
+      overridden:
+        FUN IR_EXTERNAL_DECLARATION_STUB name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:Int flags:
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags:
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
+      overridden:
+        FUN IR_EXTERNAL_DECLARATION_STUB name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:String flags:
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any flags: