KT-16999: Fix duplicates in parameter info

Use ShadowedDeclarationFilter in Parameter Info
 #KT-16999 fixed

idea/src/org/jetbrains/kotlin/idea/parameterInfo/KotlinFunctionParameterInfoHandler.kt

@@ -32,6 +32,7 @@ import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.core.OptionalParametersHelper
 import org.jetbrains.kotlin.idea.core.resolveCandidates
 import org.jetbrains.kotlin.idea.resolve.ResolutionFacade
+import org.jetbrains.kotlin.idea.util.ShadowedDeclarationsFilter
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.load.java.sam.SamAdapterDescriptor
 import org.jetbrains.kotlin.psi.*
@@ -47,6 +48,7 @@ import org.jetbrains.kotlin.resolve.calls.model.ArgumentMatch
 import org.jetbrains.kotlin.resolve.calls.util.DelegatingCall
 import org.jetbrains.kotlin.resolve.descriptorUtil.hasDefaultValue
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
+import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue
 import org.jetbrains.kotlin.types.KotlinType
 import org.jetbrains.kotlin.types.isError
 import org.jetbrains.kotlin.types.typeUtil.containsError
@@ -117,9 +119,18 @@ abstract class KotlinParameterInfoWithCallHandlerBase<TArgumentList : KtElement,
         val bindingContext = argumentList.analyze(BodyResolveMode.PARTIAL)
         val call = findCall(argumentList, bindingContext) ?: return null
 
-        val candidates = call.resolveCandidates(bindingContext, file.getResolutionFacade())
+        val resolutionFacade = file.getResolutionFacade()
+        val candidates =
+                call.resolveCandidates(bindingContext, resolutionFacade)
+                        .map { it.resultingDescriptor }
+                        .distinctBy { it.original }
 
-        context.itemsToShow = candidates.map { it.resultingDescriptor.original }.distinct().toTypedArray()
+        val shadowedDeclarationsFilter = ShadowedDeclarationsFilter(bindingContext,
+                                                                    resolutionFacade,
+                                                                    call.callElement,
+                                                                    call.explicitReceiver as? ReceiverValue)
+
+        context.itemsToShow = shadowedDeclarationsFilter.filter(candidates).toTypedArray()
         return argumentList
     }
 

idea/testData/parameterInfo/functionCall/NoShadowedDeclarations.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+
+class A
+
+fun some() {
+    A().toString(<caret>)
+}
+
+
+//Text: (<no parameters>), Disabled: false, Strikeout: false, Green: true

idea/testData/parameterInfo/functionCall/NoShadowedDeclarations2.kt

@@ -0,0 +1,17 @@
+fun A.some(s: String) {
+
+}
+
+class A {
+    private fun some(s: String) {
+
+    }
+
+    fun usage() {
+        // private some shadows extension
+        some("lol"<caret>)
+    }
+}
+
+
+//Text: (<highlight>s: String</highlight>), Disabled: false, Strikeout: false, Green: true

idea/testData/parameterInfo/functionCall/TwoSmartCasts.kt

@@ -1,4 +1,3 @@
-// WITH_RUNTIME
 // See KT-14484
 
 class C {
@@ -10,6 +9,5 @@ class C {
 }
 /*
 Text: (other: Any?), Disabled: true, Strikeout: false, Green: true
-Text: (other: String?, <highlight>ignoreCase: Boolean = ...</highlight>), Disabled: false, Strikeout: false, Green: false
 Text: (other: String?, <highlight>ignoreCase: Boolean = false</highlight>), Disabled: false, Strikeout: false, Green: false
 */

idea/tests/org/jetbrains/kotlin/idea/parameterInfo/ParameterInfoTestGenerated.java

@@ -185,6 +185,18 @@ public class ParameterInfoTestGenerated extends AbstractParameterInfoTest {
             doTest(fileName);
         }
 
+        @TestMetadata("NoShadowedDeclarations.kt")
+        public void testNoShadowedDeclarations() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/parameterInfo/functionCall/NoShadowedDeclarations.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("NoShadowedDeclarations2.kt")
+        public void testNoShadowedDeclarations2() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/parameterInfo/functionCall/NoShadowedDeclarations2.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("NoSynthesizedParameterNames.kt")
         public void testNoSynthesizedParameterNames() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/parameterInfo/functionCall/NoSynthesizedParameterNames.kt");