Do not spell check overridden declaration names (KT-15000)

#KT-15000 Fixed

idea/src/META-INF/plugin.xml

@@ -512,7 +512,7 @@
         language="kotlin"
         implementationClass="org.jetbrains.kotlin.idea.refactoring.rename.KotlinResolveSnapshotProvider"/>
 
-    <spellchecker.support implementationClass="org.jetbrains.kotlin.idea.KotlinSpellcheckingStrategy" language="kotlin"/>
+    <spellchecker.support implementationClass="org.jetbrains.kotlin.idea.codeInsight.spellchecker.KotlinSpellcheckingStrategy" language="kotlin"/>
 
     <liveTemplateContext implementation="org.jetbrains.kotlin.idea.liveTemplates.KotlinTemplateContextType$Generic"/>
     <liveTemplateContext implementation="org.jetbrains.kotlin.idea.liveTemplates.KotlinTemplateContextType$TopLevel"/>

idea/src/org/jetbrains/kotlin/idea/codeInsight/spellchecker/KotlinSpellcheckingStrategy.kt

@@ -14,33 +14,40 @@
  * limitations under the License.
  */
 
-package org.jetbrains.kotlin.idea
+package org.jetbrains.kotlin.idea.codeInsight.spellchecker
 
-import com.intellij.codeInspection.SuppressQuickFix
 import com.intellij.psi.PsiComment
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiNameIdentifierOwner
 import com.intellij.spellchecker.inspections.PlainTextSplitter
 import com.intellij.spellchecker.tokenizer.SpellcheckingStrategy
-import com.intellij.spellchecker.tokenizer.SuppressibleSpellcheckingStrategy
 import com.intellij.spellchecker.tokenizer.Tokenizer
 import com.intellij.spellchecker.tokenizer.TokenizerBase
-import org.jetbrains.kotlin.psi.KtLiteralStringTemplateEntry
+import org.jetbrains.kotlin.lexer.KtTokens
+import org.jetbrains.kotlin.psi.*
 
-class KotlinSpellcheckingStrategy: SpellcheckingStrategy() {
+class KotlinSpellcheckingStrategy : SpellcheckingStrategy() {
     private val plainTextTokenizer = TokenizerBase<KtLiteralStringTemplateEntry>(PlainTextSplitter.getInstance())
     private val emptyTokenizer = SpellcheckingStrategy.EMPTY_TOKENIZER
 
     override fun getTokenizer(element: PsiElement?): Tokenizer<out PsiElement?> {
-        @Suppress("UNCHECKED_CAST")
+        return when (element) {
-        return when {
+            is PsiComment -> super.getTokenizer(element)
-            element is PsiNameIdentifierOwner || element is PsiComment ->
+            is KtParameter -> {
-                super.getTokenizer(element)
+                val function = (element.parent as? KtParameterList)?.parent as? KtNamedFunction
-
+                when {
-            element is KtLiteralStringTemplateEntry -> plainTextTokenizer
+                    function?.hasModifier(KtTokens.OVERRIDE_KEYWORD) == true -> emptyTokenizer
-
+                    else -> super.getTokenizer(element)
-            else ->
+                }
-                emptyTokenizer
+            }
+            is PsiNameIdentifierOwner -> {
+                when {
+                    element is KtModifierListOwner && element.hasModifier(KtTokens.OVERRIDE_KEYWORD) -> emptyTokenizer
+                    else -> super.getTokenizer(element)
+                }
+            }
+            is KtLiteralStringTemplateEntry -> plainTextTokenizer
+            else -> emptyTokenizer
         }
     }
 }

idea/testData/checker/infos/TyposInOverrideParams.kt

@@ -0,0 +1,15 @@
+<info descr="null">abstract</info> class Base {
+  <info descr="null">abstract</info> fun foo(<TYPO descr="Typo: In word 'oher'">oher</TYPO>: Int)
+
+  <info descr="null">abstract</info> val <TYPO descr="Typo: In word 'smal'">smal</TYPO>Val: Int
+  <info descr="null">abstract</info> fun <TYPO descr="Typo: In word 'smal'">smal</TYPO>Fun()
+}
+
+class Other : Base() {
+  <info descr="null">override</info> fun foo(oher: Int) {
+  }
+
+  <info descr="null">override</info> val smalVal: Int <info descr="null">get</info>() = 1
+  <info descr="null">override</info> fun smalFun() {}
+}
+

idea/tests/org/jetbrains/kotlin/checkers/PsiCheckerTestGenerated.java

@@ -960,6 +960,12 @@ public class PsiCheckerTestGenerated extends AbstractPsiCheckerTest {
             doTestWithInfos(fileName);
         }
 
+        @TestMetadata("TyposInOverrideParams.kt")
+        public void testTyposInOverrideParams() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/checker/infos/TyposInOverrideParams.kt");
+            doTestWithInfos(fileName);
+        }
+
         @TestMetadata("WrapIntoRef.kt")
         public void testWrapIntoRef() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/checker/infos/WrapIntoRef.kt");