Make package name inspection global (KT-29549)

Report same package only once.

 #KT-29549 Fixed

.idea/inspectionProfiles/idea_default.xml

@@ -117,6 +117,7 @@
           <Problem reference="com.intellij.openapi.extensions.ExtensionPointName#findExtensionOrFail" reason="Absent in 182." />
           <Problem reference="com.intellij.openapi.ui.popup.PopupChooserBuilder#PopupChooserBuilder(javax.swing.JList)" reason="Generified in 182. Use PopupChooserBuilderWrapper instead." />
           <Problem reference="com.intellij.openapi.editor.event.EditorFactoryListener" reason="Default implementations were added in 183. Use EditorFactoryListenerWrapper for inheritance instead." />
+          <Problem reference="com.intellij.codeInspection.reference.RefFile#getPsiElement" reason="Absent in 182. Use psiFile extension instead." />
         </list>
       </option>
     </inspection_tool>

idea/resources/META-INF/plugin-common.xml

@@ -2650,7 +2650,7 @@
                      displayName="Local variable naming convention"
                      level="WEAK WARNING"/>
 
-    <localInspection implementationClass="org.jetbrains.kotlin.idea.inspections.PackageNameInspection"
+    <globalInspection implementationClass="org.jetbrains.kotlin.idea.inspections.PackageNameInspection"
                      language="kotlin"
                      groupPath="Kotlin"
                      groupName="Naming conventions"

idea/src/org/jetbrains/kotlin/idea/inspections/NamingConventionInspections.kt

@@ -5,21 +5,30 @@
 
 package org.jetbrains.kotlin.idea.inspections
 
-import com.intellij.codeInspection.LocalInspectionToolSession
-import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.analysis.AnalysisScope
+import com.intellij.codeInspection.*
+import com.intellij.codeInspection.reference.RefEntity
+import com.intellij.codeInspection.reference.RefFile
+import com.intellij.codeInspection.reference.RefPackage
 import com.intellij.openapi.editor.event.DocumentAdapter
 import com.intellij.openapi.editor.event.DocumentEvent
 import com.intellij.openapi.ui.LabeledComponent
+import com.intellij.openapi.util.text.StringUtil
 import com.intellij.psi.JavaPsiFacade
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiElementVisitor
 import com.intellij.psi.PsiNameIdentifierOwner
 import com.intellij.ui.EditorTextField
+import com.siyeh.ig.BaseGlobalInspection
 import com.siyeh.ig.psiutils.TestUtils
 import org.intellij.lang.annotations.Language
 import org.intellij.lang.regexp.RegExpFileType
 import org.jdom.Element
+import org.jetbrains.annotations.NonNls
+import org.jetbrains.kotlin.idea.core.packageMatchesDirectoryOrImplicit
 import org.jetbrains.kotlin.idea.quickfix.RenameIdentifierFix
+import org.jetbrains.kotlin.idea.refactoring.isInjectedFragment
+import org.jetbrains.kotlin.idea.util.compat.psiFile
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
@@ -104,7 +113,7 @@ class NamingConventionInspectionSettings(
         }
     }
 
-    protected fun getNameMismatchMessage(name: String): String {
+    fun getNameMismatchMessage(name: String): String {
         if (namePattern != defaultNamePattern) {
             return getDefaultErrorMessage()
         }
@@ -145,7 +154,7 @@ sealed class NamingConventionInspection(
     @Suppress("MemberVisibilityCanBePrivate")
     var namePattern: String = defaultNamePattern
 
-    protected val namingSettings = NamingConventionInspectionSettings(
+    private val namingSettings = NamingConventionInspectionSettings(
         entityName, defaultNamePattern,
         setNamePatternCallback = { value ->
             namePattern = value
@@ -297,37 +306,17 @@ class LocalVariableNameInspection :
         START_LOWER, NO_UNDERSCORES, NO_BAD_CHARACTERS
     )
 
-class PackageNameInspection :
-    NamingConventionInspection("Package", "[a-z_][a-zA-Z\\d_]*(\\.[a-z_][a-zA-Z\\d_]*)*") {
-
-    companion object {
-        val PART_RULES = arrayOf(NO_BAD_CHARACTERS_OR_UNDERSCORE, NO_START_UPPER)
-    }
-
+private class PackageNameInspectionLocal(
+    val parentInspection: InspectionProfileEntry,
+    val namingSettings: NamingConventionInspectionSettings
+) : AbstractKotlinInspection() {
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean, session: LocalInspectionToolSession): PsiElementVisitor {
         return packageDirectiveVisitor { directive ->
             val packageNameExpression = directive.packageNameExpression ?: return@packageDirectiveVisitor
-            val qualifiedName = directive.qualifiedName
-            if (qualifiedName.isEmpty() || namingSettings.nameRegex?.matches(qualifiedName) != false) {
-                return@packageDirectiveVisitor
-            }
 
-            val partErrorMessage = if (namePattern == namingSettings.defaultNamePattern) {
-                directive.packageNames.asSequence()
-                    .mapNotNull { simpleName ->
-                        val referencedName = simpleName.getReferencedName()
-                        findRuleMessage(referencedName, PackageNameInspection.PART_RULES)
-                    }
-                    .firstOrNull()
-            } else {
-                null
-            }
+            val checkResult = checkPackageDirective(directive, namingSettings) ?: return@packageDirectiveVisitor
 
-            val descriptionTemplate = if (partErrorMessage != null) {
-                "Package name <code>#ref</code> part $partErrorMessage #loc"
-            } else {
-                "Package name <code>#ref</code> ${namingSettings.getDefaultErrorMessage()} #loc"
-            }
+            val descriptionTemplate = checkResult.toProblemTemplateString()
 
             holder.registerProblem(
                 packageNameExpression,
@@ -337,10 +326,126 @@ class PackageNameInspection :
         }
     }
 
+    companion object {
+        data class CheckResult(val errorMessage: String, val isForPart: Boolean)
+
+        fun CheckResult.toProblemTemplateString(): String {
+            return if (isForPart) {
+                "Package name <code>#ref</code> part $errorMessage #loc"
+            } else {
+                "Package name <code>#ref</code> $errorMessage #loc"
+            }
+        }
+
+        fun checkPackageDirective(directive: KtPackageDirective, namingSettings: NamingConventionInspectionSettings): CheckResult? {
+            return checkQualifiedName(directive.qualifiedName, namingSettings)
+        }
+
+        fun checkQualifiedName(qualifiedName: String, namingSettings: NamingConventionInspectionSettings): CheckResult? {
+            if (qualifiedName.isEmpty() || namingSettings.nameRegex?.matches(qualifiedName) != false) {
+                return null
+            }
+
+            val partErrorMessage = if (namingSettings.namePattern == namingSettings.defaultNamePattern) {
+                qualifiedName.split('.').asSequence()
+                    .mapNotNull { part -> findRuleMessage(part, PackageNameInspection.PART_RULES) }
+                    .firstOrNull()
+            } else {
+                null
+            }
+
+            return if (partErrorMessage != null) {
+                CheckResult(partErrorMessage, true)
+            } else {
+                CheckResult(namingSettings.getDefaultErrorMessage(), false)
+            }
+        }
+    }
+
     private class RenamePackageFix : RenameIdentifierFix() {
         override fun getElementToRename(element: PsiElement): PsiElement? {
             val packageDirective = element as? KtPackageDirective ?: return null
             return JavaPsiFacade.getInstance(element.project).findPackage(packageDirective.qualifiedName)
         }
     }
+
+    override fun getShortName(): String = parentInspection.shortName
+    override fun getDisplayName(): String = parentInspection.displayName
+}
+
+class PackageNameInspection : BaseGlobalInspection() {
+    companion object {
+        const val DEFAULT_PACKAGE_NAME_PATTERN = "[a-z_][a-zA-Z\\d_]*(\\.[a-z_][a-zA-Z\\d_]*)*"
+        val PART_RULES = arrayOf(NO_BAD_CHARACTERS_OR_UNDERSCORE, NO_START_UPPER)
+
+        private fun PackageNameInspectionLocal.Companion.CheckResult.toErrorMessage(qualifiedName: String): String {
+            return if (isForPart) {
+                "Package name <code>$qualifiedName</code> part $errorMessage"
+            } else {
+                "Package name <code>$qualifiedName</code> $errorMessage"
+            }
+        }
+    }
+
+    var namePattern: String = DEFAULT_PACKAGE_NAME_PATTERN
+
+    private val namingSettings = NamingConventionInspectionSettings(
+        "Package",
+        DEFAULT_PACKAGE_NAME_PATTERN,
+        setNamePatternCallback = { value ->
+            namePattern = value
+        }
+    )
+
+    override fun checkElement(
+        refEntity: RefEntity,
+        analysisScope: AnalysisScope,
+        inspectionManager: InspectionManager,
+        globalInspectionContext: GlobalInspectionContext
+    ): Array<CommonProblemDescriptor>? {
+        when (refEntity) {
+            is RefFile -> {
+                val psiFile = refEntity.psiFile
+                if (psiFile is KtFile && !psiFile.isInjectedFragment && !psiFile.packageMatchesDirectoryOrImplicit()) {
+                    val packageDirective = psiFile.packageDirective
+                    if (packageDirective != null) {
+                        val qualifiedName = packageDirective.qualifiedName
+                        val checkResult = PackageNameInspectionLocal.checkPackageDirective(packageDirective, namingSettings)
+                        if (checkResult != null) {
+                            return arrayOf(inspectionManager.createProblemDescriptor(checkResult.toErrorMessage(qualifiedName)))
+                        }
+                    }
+                }
+            }
+
+            is RefPackage -> {
+                @NonNls val name = StringUtil.getShortName(refEntity.getQualifiedName())
+                if (name.isEmpty() || InspectionsBundle.message("inspection.reference.default.package") == name) {
+                    return null
+                }
+
+                val checkResult = PackageNameInspectionLocal.checkQualifiedName(name, namingSettings)
+                if (checkResult != null) {
+                    return arrayOf(inspectionManager.createProblemDescriptor(checkResult.toErrorMessage(name)))
+                }
+            }
+
+            else -> {
+                return null
+            }
+        }
+
+        return null
+    }
+
+    override fun readSettings(element: Element) {
+        super.readSettings(element)
+        namingSettings.namePattern = namePattern
+    }
+
+    override fun createOptionsPanel() = namingSettings.createOptionsPanel()
+
+    override fun getSharedLocalInspectionTool(): LocalInspectionTool {
+        return PackageNameInspectionLocal(this, namingSettings)
+    }
 }

idea/src/org/jetbrains/kotlin/idea/util/compat/refElements.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. 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.idea.util.compat
+
+import com.intellij.codeInspection.reference.RefFile
+import com.intellij.psi.PsiFile
+
+// BUNCH: 182
+@Suppress("IncompatibleAPI")
+val RefFile.psiFile: PsiFile?
+    get() = psiElement

idea/src/org/jetbrains/kotlin/idea/util/compat/refElements.kt.182

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. 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.idea.util.compat
+
+import com.intellij.codeInspection.reference.RefFile
+import com.intellij.psi.PsiFile
+
+// BUNCH: 182
+@Suppress("IncompatibleAPI")
+val RefFile.psiFile: PsiFile?
+    get() = element