Use camel-case in FirFunctionCallOrigin

Also componentCall is operator call

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirCallResolver.kt

@@ -162,9 +162,7 @@ class FirCallResolver(
         }
 
         var reducedCandidates = if (!result.currentApplicability.isSuccess) {
-            val distinctApplicabilities = bestCandidates.flatMapTo(mutableSetOf()) { candidate ->
-                candidate.diagnostics.map { it.applicability }
-            }
+            val distinctApplicabilities = bestCandidates.mapTo(mutableSetOf()) { it.currentApplicability }
             //if all candidates have the same kind on inApplicability - try to choose the most specific one
             if (distinctApplicabilities.size == 1 && distinctApplicabilities.single() > CandidateApplicability.INAPPLICABLE) {
                 chooseMostSpecific()

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/ResolutionStages.kt

@@ -272,9 +272,9 @@ internal object CheckCallModifiers : CheckerStage() {
         if (callInfo.callSite is FirFunctionCall) {
             val functionSymbol = candidate.symbol as? FirNamedFunctionSymbol ?: return
             when {
-                callInfo.callSite.origin == FirFunctionCallOrigin.INFIX && !functionSymbol.fir.isInfix ->
+                callInfo.callSite.origin == FirFunctionCallOrigin.Infix && !functionSymbol.fir.isInfix ->
                     sink.reportDiagnostic(InfixCallOfNonInfixFunction(functionSymbol))
-                callInfo.callSite.origin == FirFunctionCallOrigin.OPERATOR && !functionSymbol.fir.isOperator ->
+                callInfo.callSite.origin == FirFunctionCallOrigin.Operator && !functionSymbol.fir.isOperator ->
                     sink.reportDiagnostic(OperatorCallOfNonOperatorFunction(functionSymbol))
                 callInfo.isImplicitInvoke && !functionSymbol.fir.isOperator ->
                     sink.reportDiagnostic(OperatorCallOfNonOperatorFunction(functionSymbol))

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/dfa/contracts/ConeConditionalEffectToFirVisitor.kt

@@ -51,7 +51,7 @@ private class ConeConditionalEffectToFirVisitor(
         return buildFunctionCall {
             calleeReference = buildSimpleNamedReference { name = OperatorNameConventions.NOT }
             this.explicitReceiver = explicitReceiver
-            origin = FirFunctionCallOrigin.OPERATOR
+            origin = FirFunctionCallOrigin.Operator
         }
     }
 

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/FirExpressionsResolveTransformer.kt

@@ -370,7 +370,7 @@ open class FirExpressionsResolveTransformer(transformer: FirBodyResolveTransform
                 this.name = name
                 candidateSymbol = null
             }
-            origin = FirFunctionCallOrigin.OPERATOR
+            origin = FirFunctionCallOrigin.Operator
         }
 
         // x.plusAssign(y)

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/scopes/impl/FirIntegerOperatorCall.kt

@@ -44,7 +44,7 @@ class FirIntegerOperatorCall @FirImplementationDetail constructor(
     extensionReceiver,
     argumentList,
     calleeReference,
-    FirFunctionCallOrigin.OPERATOR
+    FirFunctionCallOrigin.Operator
 )
 
 @FirBuilderDsl