[FIR] Fix Disappeared INVALID_CHARACTERS

^KT-59996 Fixed

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -3036,7 +3036,7 @@ sealed interface KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = ResolvedToUnderscoreNamedCatchParameter::class
     }
 
-    interface InvalidCharacters : KtFirDiagnostic<KtNamedDeclaration> {
+    interface InvalidCharacters : KtFirDiagnostic<PsiElement> {
         override val diagnosticClass get() = InvalidCharacters::class
         val message: String
     }

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -3661,7 +3661,7 @@ internal class InvalidCharactersImpl(
     override val message: String,
     firDiagnostic: KtPsiDiagnostic,
     token: KtLifetimeToken,
-) : KtAbstractFirDiagnostic<KtNamedDeclaration>(firDiagnostic, token), KtFirDiagnostic.InvalidCharacters
+) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.InvalidCharacters
 
 internal class DangerousCharactersImpl(
     override val characters: String,

compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirDiagnosticsList.kt

@@ -1515,7 +1515,7 @@ object DIAGNOSTICS_LIST : DiagnosticList("FirErrors") {
         val UNDERSCORE_IS_RESERVED by error<PsiElement>(PositioningStrategy.NAME_IDENTIFIER)
         val UNDERSCORE_USAGE_WITHOUT_BACKTICKS by error<PsiElement>(PositioningStrategy.NAME_IDENTIFIER)
         val RESOLVED_TO_UNDERSCORE_NAMED_CATCH_PARAMETER by warning<KtNameReferenceExpression>()
-        val INVALID_CHARACTERS by error<KtNamedDeclaration>(PositioningStrategy.NAME_IDENTIFIER) {
+        val INVALID_CHARACTERS by error<PsiElement>(PositioningStrategy.NAME_IDENTIFIER) {
             parameter<String>("message")
         }
         val DANGEROUS_CHARACTERS by warning<KtNamedDeclaration>(PositioningStrategy.NAME_IDENTIFIER) {

compiler/fir/checkers/checkers.js/src/org/jetbrains/kotlin/fir/analysis/js/checkers/JsDeclarationCheckers.kt

@@ -50,6 +50,7 @@ object JsDeclarationCheckers : DeclarationCheckers() {
 
     override val fileCheckers: Set<FirFileChecker>
         get() = setOf(
+            FirJsPackageDirectiveChecker,
             FirJsNameClashFileTopLevelDeclarationsChecker
         )
 }

compiler/fir/checkers/checkers.js/src/org/jetbrains/kotlin/fir/analysis/js/checkers/declaration/FirJsPackageDirectiveChecker.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.fir.analysis.js.checkers.declaration
+
+import org.jetbrains.kotlin.KtNodeTypes
+import org.jetbrains.kotlin.config.LanguageFeature
+import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
+import org.jetbrains.kotlin.diagnostics.reportOn
+import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
+import org.jetbrains.kotlin.fir.analysis.checkers.declaration.FirFileChecker
+import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
+import org.jetbrains.kotlin.fir.analysis.forEachChildOfType
+import org.jetbrains.kotlin.fir.analysis.js.checkers.sanitizeName
+import org.jetbrains.kotlin.fir.declarations.FirFile
+import org.jetbrains.kotlin.fir.packageFqName
+import org.jetbrains.kotlin.text
+
+object FirJsPackageDirectiveChecker: FirFileChecker() {
+    // inspired by FirJsNameCharsChecker.check()
+    override fun check(declaration: FirFile, context: CheckerContext, reporter: DiagnosticReporter) {
+        if (declaration.packageFqName.isRoot) return
+        if (context.languageVersionSettings.supportsFeature(LanguageFeature.JsAllowInvalidCharsIdentifiersEscaping)) return
+
+        declaration.packageDirective.source?.forEachChildOfType(setOf(KtNodeTypes.REFERENCE_EXPRESSION)) {
+            val name = it.text.toString()
+            if (sanitizeName(name) != name) {
+                reporter.reportOn(
+                    it,
+                    FirErrors.INVALID_CHARACTERS,
+                    "$name contains illegal characters",
+                    context,
+                )
+            }
+        }
+    }
+}

compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt

@@ -765,7 +765,7 @@ object FirErrors {
     val UNDERSCORE_IS_RESERVED by error0<PsiElement>(SourceElementPositioningStrategies.NAME_IDENTIFIER)
     val UNDERSCORE_USAGE_WITHOUT_BACKTICKS by error0<PsiElement>(SourceElementPositioningStrategies.NAME_IDENTIFIER)
     val RESOLVED_TO_UNDERSCORE_NAMED_CATCH_PARAMETER by warning0<KtNameReferenceExpression>()
-    val INVALID_CHARACTERS by error1<KtNamedDeclaration, String>(SourceElementPositioningStrategies.NAME_IDENTIFIER)
+    val INVALID_CHARACTERS by error1<PsiElement, String>(SourceElementPositioningStrategies.NAME_IDENTIFIER)
     val DANGEROUS_CHARACTERS by warning1<KtNamedDeclaration, String>(SourceElementPositioningStrategies.NAME_IDENTIFIER)
     val EQUALITY_NOT_APPLICABLE by error3<KtBinaryExpression, String, ConeKotlinType, ConeKotlinType>()
     val EQUALITY_NOT_APPLICABLE_WARNING by warning3<KtBinaryExpression, String, ConeKotlinType, ConeKotlinType>()

compiler/testData/diagnostics/testsWithJsStdLib/name/illegalPackageName.fir.kt

@@ -1,3 +0,0 @@
-package `//`
-
-class A

compiler/testData/diagnostics/testsWithJsStdLib/name/illegalPackageName.kt

@@ -1,3 +1,24 @@
-package <!INVALID_CHARACTERS!>`//`<!>
+// FIR_IDENTICAL
+// FILE: slashes.kt
+package a.<!INVALID_CHARACTERS!>`//`<!>.b.<!INVALID_CHARACTERS!>`/`<!>.c
+class Slashes
 
-class A
+// FILE: space.kt
+package <!INVALID_CHARACTERS!>` `<!>
+class Space
+
+// FILE: less.kt
+package <!INVALID_CHARACTERS!>`<`<!>
+class Less
+
+// FILE: more.kt
+package <!INVALID_CHARACTERS!>`>`<!>
+class More
+
+// FILE: dash.kt
+package <!INVALID_CHARACTERS!>`-`<!>
+class Dash
+
+// FILE: question.kt
+package <!INVALID_CHARACTERS!>`?`<!>
+class Question

compiler/testData/diagnostics/testsWithJsStdLib/name/illegalPackageName.txt

@@ -1,11 +1,64 @@
 package
 
-package `//` {
+package ` ` {
 
-    public final class A {
-        public constructor A()
+    public final class Space {
+        public constructor Space()
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
 }
+
+package `-` {
+
+    public final class Dash {
+        public constructor Dash()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package `>` {
+
+    public final class More {
+        public constructor More()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package `?` {
+
+    public final class Question {
+        public constructor Question()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package a {
+
+    package a.`//` {
+
+        package a.`//`.b {
+
+            package a.`//`.b.`/` {
+
+                package a.`//`.b.`/`.c {
+
+                    public final class Slashes {
+                        public constructor Slashes()
+                        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+                        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+                        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+                    }
+                }
+            }
+        }
+    }
+}
+

compiler/testData/diagnostics/testsWithJsStdLib/name/legalPackageName.kt

@@ -0,0 +1,30 @@
+// FIR_IDENTICAL
+// !LANGUAGE: +JsAllowInvalidCharsIdentifiersEscaping
+
+// FILE: slashes.kt
+package a.`//`.b.`/`.c
+class Slashes
+
+// FILE: slash.kt
+package `/`
+class Slash
+
+// FILE: space.kt
+package ` `
+class Space
+
+// FILE: less.kt
+package `<`
+class Less
+
+// FILE: more.kt
+package `>`
+class More
+
+// FILE: dash.kt
+package `-`
+class Dash
+
+// FILE: question.kt
+package `?`
+class Question

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsOldFrontendDiagnosticsTestGenerated.java

@@ -790,6 +790,12 @@ public class FirPsiJsOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiJ
             runTest("compiler/testData/diagnostics/testsWithJsStdLib/name/jsNameWithoutParameter.kt");
         }
 
+        @Test
+        @TestMetadata("legalPackageName.kt")
+        public void testLegalPackageName() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithJsStdLib/name/legalPackageName.kt");
+        }
+
         @Test
         @TestMetadata("methodAndMethod.kt")
         public void testMethodAndMethod() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/DiagnosticsWithJsStdLibTestGenerated.java

@@ -790,6 +790,12 @@ public class DiagnosticsWithJsStdLibTestGenerated extends AbstractDiagnosticsTes
             runTest("compiler/testData/diagnostics/testsWithJsStdLib/name/jsNameWithoutParameter.kt");
         }
 
+        @Test
+        @TestMetadata("legalPackageName.kt")
+        public void testLegalPackageName() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithJsStdLib/name/legalPackageName.kt");
+        }
+
         @Test
         @TestMetadata("methodAndMethod.kt")
         public void testMethodAndMethod() throws Exception {