[FIR] Improve readability of rendered types in diagnostics

#KT-61824 Fixed
#KT-61688 Fixed

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/symbols/pointers/FirCallableSignature.kt

@@ -14,7 +14,7 @@ import org.jetbrains.kotlin.fir.renderer.ConeTypeRenderer
 import org.jetbrains.kotlin.fir.renderer.FirRenderer
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.symbols.lazyResolveToPhase
-import org.jetbrains.kotlin.fir.types.ConeAttributes
+import org.jetbrains.kotlin.fir.types.ConeAttribute
 import org.jetbrains.kotlin.fir.types.FirTypeRef
 
 /**
@@ -114,5 +114,5 @@ private fun FirTypeRef.renderType(builder: StringBuilder = StringBuilder()): Str
 ).renderElementAsString(this)
 
 private object EmptyConeTypeAttributeRenderer : ConeAttributeRenderer() {
-    override fun render(attributes: ConeAttributes): String = ""
+    override fun render(attributes: Iterable<ConeAttribute<*>>): String = ""
 }

compiler/fir/analysis-tests/testData/resolve/expresssions/invoke/threeReceiversCorrect.kt

@@ -3,7 +3,7 @@ class C
 class B
 
 class A {
-    val B.foo: C.() -> Unit get() = <!NULL_FOR_NONNULL_TYPE("@ExtensionFunctionType kotlin/Function1<C, kotlin/Unit>")!>null<!>
+    val B.foo: C.() -> Unit get() = <!NULL_FOR_NONNULL_TYPE("kotlin/Function1<C, kotlin/Unit>")!>null<!>
 }
 
 fun <T, R> with(arg: T, f: T.() -> R): R = arg.f()

compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeAttributeRenderer.kt

@@ -5,12 +5,18 @@
 
 package org.jetbrains.kotlin.fir.renderer
 
-import org.jetbrains.kotlin.fir.types.ConeAttributes
+import org.jetbrains.kotlin.fir.types.ConeAttribute
 
 abstract class ConeAttributeRenderer {
-    abstract fun render(attributes: ConeAttributes): String
+    abstract fun render(attributes: Iterable<ConeAttribute<*>>): String
 
     object ToString : ConeAttributeRenderer() {
-        override fun render(attributes: ConeAttributes): String = attributes.joinToString(separator = " ", postfix = " ") { it.toString() }
+        override fun render(attributes: Iterable<ConeAttribute<*>>): String =
+            attributes.joinToString(separator = " ", postfix = " ") { it.toString() }
+    }
+
+    object ForReadability : ConeAttributeRenderer() {
+        override fun render(attributes: Iterable<ConeAttribute<*>>): String =
+            attributes.joinToString(separator = " ", postfix = " ") { it.renderForReadability() }
     }
 }

compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeTypeRenderer.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.fir.renderer
 
 import org.jetbrains.kotlin.builtins.functions.FunctionTypeKind
 import org.jetbrains.kotlin.fir.types.*
+import org.jetbrains.kotlin.utils.addToStdlib.ifNotEmpty
 
 open class ConeTypeRenderer(
     private val attributeRenderer: ConeAttributeRenderer = ConeAttributeRenderer.ToString
@@ -180,16 +181,16 @@ open class ConeTypeRenderer(
         builder.append(">")
     }
 
-    private fun ConeKotlinType.renderAttributes() {
+    protected open fun ConeKotlinType.renderAttributes() {
         if (!attributes.any()) return
         builder.append(attributeRenderer.render(attributes))
     }
 
-    private fun ConeKotlinType.renderNonCompilerAttributes() {
+    protected fun ConeKotlinType.renderNonCompilerAttributes() {
         val compilerAttributes = CompilerConeAttributes.classIdByCompilerAttributeKey
-        if (attributes.any { it.key !in compilerAttributes }) {
+        attributes
-            builder.append(attributeRenderer.render(attributes))
+            .filter { it.key !in compilerAttributes }
-        }
+            .ifNotEmpty { builder.append(attributeRenderer.render(this)) }
     }
 
     private fun ConeTypeProjection.render() {

compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeTypeRendererForReadability.kt

@@ -8,13 +8,13 @@ package org.jetbrains.kotlin.fir.renderer
 import org.jetbrains.kotlin.builtins.StandardNames
 import org.jetbrains.kotlin.fir.types.ConeFlexibleType
 import org.jetbrains.kotlin.fir.types.ConeIntegerLiteralType
+import org.jetbrains.kotlin.fir.types.ConeKotlinType
 import org.jetbrains.kotlin.renderer.replacePrefixesInTypeRepresentations
 import org.jetbrains.kotlin.renderer.typeStringsDifferOnlyInNullability
 
 class ConeTypeRendererForReadability(
     private val idRendererCreator: () -> ConeIdRenderer,
-) : ConeTypeRenderer() {
+) : ConeTypeRenderer(ConeAttributeRenderer.ForReadability) {
-
     constructor(builder: StringBuilder, idRendererCreator: () -> ConeIdRenderer) : this(idRendererCreator) {
         this.builder = builder
         this.idRenderer = idRendererCreator()
@@ -76,4 +76,8 @@ class ConeTypeRendererForReadability(
     override fun render(type: ConeIntegerLiteralType) {
         render(type.getApproximatedType())
     }
+
+    override fun ConeKotlinType.renderAttributes() {
+        renderNonCompilerAttributes()
+    }
 }

compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeAttributes.kt

@@ -30,6 +30,7 @@ abstract class ConeAttribute<out T : ConeAttribute<T>> : AnnotationMarker {
     abstract fun isSubtypeOf(other: @UnsafeVariance T?): Boolean
 
     abstract override fun toString(): String
+    open fun renderForReadability(): String = toString()
 
     abstract val key: KClass<out T>
 }

compiler/fir/tree/src/org/jetbrains/kotlin/fir/renderer/FirRenderer.kt

@@ -66,6 +66,18 @@ class FirRenderer(
 
         fun withDeclarationAttributes(): FirRenderer =
             FirRenderer(declarationRenderer = FirDeclarationRendererWithAttributes())
+
+        fun forReadability(): FirRenderer = FirRenderer(
+            typeRenderer = ConeTypeRenderer(),
+            idRenderer = ConeIdShortRenderer(),
+            classMemberRenderer = FirNoClassMemberRenderer(),
+            bodyRenderer = null,
+            propertyAccessorRenderer = null,
+            callArgumentsRenderer = FirCallNoArgumentsRenderer(),
+            modifierRenderer = FirPartialModifierRenderer(),
+            valueParameterRenderer = FirValueParameterRendererNoDefaultValue(),
+            declarationRenderer = FirDeclarationRenderer("local ")
+        )
     }
 
     init {

compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/CustomAnnotationTypeAttribute.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
 import org.jetbrains.kotlin.fir.expressions.builder.buildAnnotationCallCopy
 import org.jetbrains.kotlin.fir.expressions.builder.buildAnnotationCopy
 import org.jetbrains.kotlin.fir.render
+import org.jetbrains.kotlin.fir.renderer.FirRenderer
 import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import kotlin.reflect.KClass
 
@@ -55,6 +56,9 @@ class CustomAnnotationTypeAttribute(
 
     override fun toString(): String = annotations.joinToString(separator = " ") { it.render() }
 
+    override fun renderForReadability(): String =
+        annotations.joinToString(separator = " ") { FirRenderer.forReadability().renderElementAsString(it, trim = true) }
+
     override val key: KClass<out CustomAnnotationTypeAttribute>
         get() = CustomAnnotationTypeAttribute::class
 

compiler/testData/cli/jvm/compatqualDefault.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/compatqualUsage.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/compatqualUsage.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     b.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/compatqualEnable.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/compatqualUsage.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/compatqualUsage.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     b.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jspecifyDefault.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/jspecifyUsage.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jspecifyUsage.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     a.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jspecifyStrict.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/jspecifyUsage.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jspecifyUsage.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     a.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jsr305DefaultMigration.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/jsr305DefaultMigration.kt:2:19: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305DefaultMigration.kt:2:19: error: null cannot be a value of a non-null type 'kotlin/String'.
     annotated.foo(null)
                   ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jsr305DeprecatedEnable.out

@@ -1,6 +1,6 @@
 warning: argument -Xjsr305-annotations is deprecated. Please use -Xjsr305 instead
 warning: option 'enable' for -Xjsr305 flag is deprecated. Please use 'strict' instead
-compiler/testData/cli/jvm/jsr305Usage.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305Usage.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     a.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jsr305FqNameIgnore.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/jsr305Migration.kt:3:19: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305Migration.kt:3:19: error: null cannot be a value of a non-null type 'kotlin/String'.
     annotated.bar(null)
                   ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jsr305FqNameStrict.out

@@ -1,7 +1,7 @@
-compiler/testData/cli/jvm/jsr305Migration.kt:2:19: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305Migration.kt:2:19: error: null cannot be a value of a non-null type 'kotlin/String'.
     annotated.foo(null)
                   ^
-compiler/testData/cli/jvm/jsr305Migration.kt:3:19: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305Migration.kt:3:19: error: null cannot be a value of a non-null type 'kotlin/String'.
     annotated.bar(null)
                   ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jsr305MigrationDefault.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/jsr305Migration.kt:3:19: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305Migration.kt:3:19: error: null cannot be a value of a non-null type 'kotlin/String'.
     annotated.bar(null)
                   ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/jsr305Strict.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/jsr305Usage.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/jsr305Usage.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     a.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/nullabilityAnnotations.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/severalAnnotations.kt:2:11: error: null cannot be a value of a non-null type '@EnhancedNullability kotlin/String'.
+compiler/testData/cli/jvm/severalAnnotations.kt:2:11: error: null cannot be a value of a non-null type 'kotlin/String'.
     a.foo(null)
           ^
 COMPILATION_ERROR

compiler/testData/diagnostics/tests/annotations/annotationRenderingInTypes.fir.kt

@@ -12,14 +12,14 @@ annotation class Ann
 fun <@Ann R : @Ann Any> f3(a: Array<@Ann R>): Array<@Ann R?> =  null!!
 
 fun test2(a: @Ann Array<in @Ann Int>) {
-    val r: Array<in Int?> = f3(<!ARGUMENT_TYPE_MISMATCH("kotlin/Array<@R|Ann|()  R>; @R|Ann|()  kotlin/Array<CapturedType(in @R|Ann|()  kotlin/Int)>")!>a<!>)
+    val r: Array<in Int?> = f3(<!ARGUMENT_TYPE_MISMATCH("kotlin/Array<@Ann() R>; @Ann() kotlin/Array<CapturedType(in @Ann() kotlin/Int)>")!>a<!>)
 }
 
 
 var test3: Int = 0
-    set(s: <!WRONG_SETTER_PARAMETER_TYPE("kotlin/Int; @R|Ann|()  kotlin/String")!>@Ann String<!>) {}
+    set(s: <!WRONG_SETTER_PARAMETER_TYPE("kotlin/Int; @Ann() kotlin/String")!>@Ann String<!>) {}
 
 
 fun f4(fn: (@Ann Int, @Ann Int) -> Unit) {}
 
-val test4 = f4 <!ARGUMENT_TYPE_MISMATCH("kotlin/Function2<@R|Ann|()  kotlin/Int, @R|Ann|()  kotlin/Int, kotlin/Unit>; kotlin/Function1<@R|Ann|()  kotlin/Int, kotlin/Unit>")!>{ single -> }<!>
+val test4 = f4 <!ARGUMENT_TYPE_MISMATCH("kotlin/Function2<@Ann() kotlin/Int, @Ann() kotlin/Int, kotlin/Unit>; kotlin/Function1<@Ann() kotlin/Int, kotlin/Unit>")!>{ single -> }<!>

compiler/testData/diagnostics/tests/annotations/rendering/memberProjectedOut.fir.kt

@@ -11,5 +11,5 @@ class C<T> {
 }
 
 fun test(a: C<out CharSequence>) {
-    a[1] = <!ARGUMENT_TYPE_MISMATCH("@R|A|()  CapturedType(out kotlin/CharSequence); kotlin/Int")!>25<!>
+    a[1] = <!ARGUMENT_TYPE_MISMATCH("@A() CapturedType(out kotlin/CharSequence); kotlin/Int")!>25<!>
 }

compiler/testData/diagnostics/tests/annotations/rendering/typeMismatchDueToTypeProjections.fir.kt

@@ -13,5 +13,5 @@ class C<T> {
 class Out<out F>
 
 fun test(a: C<out CharSequence>, y: Out<CharSequence>) {
-    a + <!ARGUMENT_TYPE_MISMATCH("Out<@R|A|()  CapturedType(out kotlin/CharSequence)>; Out<kotlin/CharSequence>")!>y<!>
+    a + <!ARGUMENT_TYPE_MISMATCH("Out<@A() CapturedType(out kotlin/CharSequence)>; Out<kotlin/CharSequence>")!>y<!>
 }

compiler/testData/diagnostics/tests/annotations/rendering/typeMismatchOnOverride.fir.kt

@@ -17,7 +17,7 @@ interface A {
 interface B : A {
     override val p1: <!PROPERTY_TYPE_MISMATCH_ON_OVERRIDE("p1; @An() val p1: @R|An|()  String")!>Int<!>
     @An
-    override <!VAR_OVERRIDDEN_BY_VAL("public abstract override val /B.p2: @R|An|()  kotlin/String    public get(): @R|An|()  kotlin/String; public abstract var /A.p2: @R|An|()  kotlin/String    public get(): @R|An|()  kotlin/String    public set(value: @R|An|()  kotlin/String): kotlin/Unit")!>val<!> p2: @An String
+    override <!VAR_OVERRIDDEN_BY_VAL("public abstract override val /B.p2: @An() kotlin/String    public get(): @An() kotlin/String; public abstract var /A.p2: @An() kotlin/String    public get(): @An() kotlin/String    public set(value: @An() kotlin/String): kotlin/Unit")!>val<!> p2: @An String
     override fun test(arg: String): <!RETURN_TYPE_MISMATCH_ON_OVERRIDE("test; @An() fun test(@An() arg: @R|An|()  String): @R|An|()  String")!>Int<!>
 }
 

compiler/testData/diagnostics/tests/builderInference/oneParameter/oneTypeVariable/oneTypeInfoOrigin/targetTypes/FunctionWithReceiverToUnitImplicitLiteralsCase.fir.kt

@@ -30,7 +30,7 @@ fun testYield() {
     val buildee = build {
         yield { val x: UserKlass = this<!UNRESOLVED_LABEL!>@yield<!> }
     }
-    checkExactType<Buildee<UserKlass.() -> Unit>>(<!ARGUMENT_TYPE_MISMATCH("Buildee<@ExtensionFunctionType kotlin/Function1<UserKlass, kotlin/Unit>>; Buildee<kotlin/Function0<kotlin/Unit>>")!>buildee<!>)
+    checkExactType<Buildee<UserKlass.() -> Unit>>(<!ARGUMENT_TYPE_MISMATCH("Buildee<kotlin/Function1<UserKlass, kotlin/Unit>>; Buildee<kotlin/Function0<kotlin/Unit>>")!>buildee<!>)
 }
 
 // test 2: PTV is in producing position (materialize-case)
@@ -42,5 +42,5 @@ fun testMaterialize() {
             materialize()
         )
     }
-    checkExactType<Buildee<UserKlass.() -> Unit>>(<!ARGUMENT_TYPE_MISMATCH("Buildee<@ExtensionFunctionType kotlin/Function1<UserKlass, kotlin/Unit>>; Buildee<kotlin/Function0<kotlin/Unit>>")!>buildee<!>)
+    checkExactType<Buildee<UserKlass.() -> Unit>>(<!ARGUMENT_TYPE_MISMATCH("Buildee<kotlin/Function1<UserKlass, kotlin/Unit>>; Buildee<kotlin/Function0<kotlin/Unit>>")!>buildee<!>)
 }

compiler/testData/diagnostics/tests/j+k/types/notNullTypeParameterWithKotlinNullableWarnings.fir.diag.txt

@@ -1,7 +1,7 @@
-/main.kt:(98,103): error: Argument type mismatch: actual type is 'V', but '@EnhancedNullability V & Any' was expected.
+/main.kt:(98,103): error: Argument type mismatch: actual type is 'V', but 'V & Any' was expected.
 
-/main.kt:(119,120): error: Argument type mismatch: actual type is 'kotlin/collections/List<V>', but 'ft<@EnhancedNullability kotlin/collections/MutableList<@EnhancedNullability @R|org/jetbrains/annotations/NotNull|()  V & Any>, @EnhancedNullability kotlin/collections/List<@EnhancedNullability @R|org/jetbrains/annotations/NotNull|()  V & Any>>' was expected.
+/main.kt:(119,120): error: Argument type mismatch: actual type is 'kotlin/collections/List<V>', but 'kotlin/collections/(Mutable)List<@NotNull() V & Any>' was expected.
 
-/main.kt:(133,138): error: Argument type mismatch: actual type is 'V', but '@EnhancedNullability E & Any' was expected.
+/main.kt:(133,138): error: Argument type mismatch: actual type is 'V', but 'E & Any' was expected.
 
-/main.kt:(154,155): error: Argument type mismatch: actual type is 'kotlin/collections/List<V>', but 'ft<@EnhancedNullability kotlin/collections/MutableList<@EnhancedNullability @R|org/jetbrains/annotations/NotNull|()  E & Any>, @EnhancedNullability kotlin/collections/List<@EnhancedNullability @R|org/jetbrains/annotations/NotNull|()  E & Any>>' was expected.
+/main.kt:(154,155): error: Argument type mismatch: actual type is 'kotlin/collections/List<V>', but 'kotlin/collections/(Mutable)List<@NotNull() E & Any>' was expected.