[Analysis API FIR] fix candidate collection for delegatedConstructor call

^KTIJ-20446

analysis/analysis-api-fe10/tests-gen/org/jetbrains/kotlin/analysis/api/fe10/test/cases/generated/cases/components/callResolver/Fe10IdeNormalAnalysisSourceModuleResolveCandidatesTestGenerated.java

@@ -79,6 +79,12 @@ public class Fe10IdeNormalAnalysisSourceModuleResolveCandidatesTestGenerated ext
             runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/ambiguousWithInferredTypeParameters.kt");
         }
 
+        @Test
+        @TestMetadata("delegatedConstructor.kt")
+        public void testDelegatedConstructor() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/delegatedConstructor.kt");
+        }
+
         @Test
         @TestMetadata("implicitInvoke.kt")
         public void testImplicitInvoke() throws Exception {
@@ -207,6 +213,24 @@ public class Fe10IdeNormalAnalysisSourceModuleResolveCandidatesTestGenerated ext
             runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/consecutiveImplicitInvoke3.kt");
         }
 
+        @Test
+        @TestMetadata("delegatedConstructorApplicable.kt")
+        public void testDelegatedConstructorApplicable() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorApplicable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegatedConstructorInapplicable.kt")
+        public void testDelegatedConstructorInapplicable() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegatedConstructorInapplicableDifferentParametersCount.kt")
+        public void testDelegatedConstructorInapplicableDifferentParametersCount() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicableDifferentParametersCount.kt");
+        }
+
         @Test
         @TestMetadata("eqEqCall_fromAny.kt")
         public void testEqEqCall_fromAny() throws Exception {

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/components/KtFirCallResolver.kt

@@ -27,7 +27,6 @@ import org.jetbrains.kotlin.analysis.low.level.api.fir.api.getOrBuildFir
 import org.jetbrains.kotlin.analysis.low.level.api.fir.resolver.AllCandidatesResolver
 import org.jetbrains.kotlin.analysis.utils.printer.parentOfType
 import org.jetbrains.kotlin.fir.FirElement
-import org.jetbrains.kotlin.fir.analysis.checkers.declaration.expandedClass
 import org.jetbrains.kotlin.fir.analysis.checkers.toRegularClassSymbol
 import org.jetbrains.kotlin.fir.declarations.FirValueParameter
 import org.jetbrains.kotlin.fir.declarations.fullyExpandedClass
@@ -843,6 +842,7 @@ internal class KtFirCallResolver(
                 resolveFragmentOfCall
             ).toKtCallCandidateInfos()
             is FirResolvedQualifier -> toKtCallCandidateInfos()
+            is FirDelegatedConstructorCall -> collectCallCandidatesForDelegatedConstructorCall(psi, resolveFragmentOfCall)
             else -> toKtCallInfo(psi, resolveCalleeExpressionOfFunctionCall, resolveFragmentOfCall).toKtCallCandidateInfos()
         }
     }
@@ -912,6 +912,26 @@ internal class KtFirCallResolver(
         }
     }
 
+    private fun FirDelegatedConstructorCall.collectCallCandidatesForDelegatedConstructorCall(
+        psi: KtElement,
+        resolveFragmentOfCall: Boolean
+    ): List<KtCallCandidateInfo> {
+        val candidates = AllCandidatesResolver(analysisSession.useSiteSession).getAllCandidatesForDelegatedConstructor(
+            analysisSession.firResolveSession,
+            this,
+            psi
+        )
+        return candidates.mapNotNull {
+            convertToKtCallCandidateInfo(
+                this,
+                psi,
+                it.candidate,
+                it.isInBestCandidates,
+                resolveFragmentOfCall
+            )
+        }
+    }
+
     private fun KtCallInfo?.toKtCallCandidateInfos(): List<KtCallCandidateInfo> {
         return when (this) {
             is KtSuccessCallInfo -> listOf(KtApplicableCallCandidateInfo(call, isInBestCandidates = true))
@@ -921,13 +941,13 @@ internal class KtFirCallResolver(
     }
 
     private fun convertToKtCallCandidateInfo(
-        functionCall: FirFunctionCall,
+        resolvable: FirResolvable,
         element: KtElement,
         candidate: Candidate,
         isInBestCandidates: Boolean,
         resolveFragmentOfCall: Boolean
     ): KtCallCandidateInfo? {
-        val call = createKtCall(element, functionCall, candidate, resolveFragmentOfCall)
+        val call = createKtCall(element, resolvable, candidate, resolveFragmentOfCall)
             ?: error("expect `createKtCall` to succeed for candidate")
         if (candidate.isSuccessful) {
             return KtApplicableCallCandidateInfo(call, isInBestCandidates)
@@ -936,7 +956,7 @@ internal class KtFirCallResolver(
         val diagnostic = createConeDiagnosticForCandidateWithError(candidate.currentApplicability, candidate)
         if (diagnostic is ConeHiddenCandidateError) return null
         val ktDiagnostic =
-            functionCall.source?.let { diagnostic.asKtDiagnostic(it, element.toKtPsiSourceElement()) }
+            resolvable.source?.let { diagnostic.asKtDiagnostic(it, element.toKtPsiSourceElement()) }
                 ?: KtNonBoundToPsiErrorDiagnostic(factoryName = null, diagnostic.reason, token)
         return KtInapplicableCallCandidateInfo(call, isInBestCandidates, ktDiagnostic)
     }

analysis/analysis-api-fir/tests-gen/org/jetbrains/kotlin/analysis/api/fir/test/cases/generated/cases/components/callResolver/FirIdeNormalAnalysisSourceModuleResolveCandidatesTestGenerated.java

@@ -79,6 +79,12 @@ public class FirIdeNormalAnalysisSourceModuleResolveCandidatesTestGenerated exte
             runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/ambiguousWithInferredTypeParameters.kt");
         }
 
+        @Test
+        @TestMetadata("delegatedConstructor.kt")
+        public void testDelegatedConstructor() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/delegatedConstructor.kt");
+        }
+
         @Test
         @TestMetadata("implicitInvoke.kt")
         public void testImplicitInvoke() throws Exception {
@@ -207,6 +213,24 @@ public class FirIdeNormalAnalysisSourceModuleResolveCandidatesTestGenerated exte
             runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/consecutiveImplicitInvoke3.kt");
         }
 
+        @Test
+        @TestMetadata("delegatedConstructorApplicable.kt")
+        public void testDelegatedConstructorApplicable() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorApplicable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegatedConstructorInapplicable.kt")
+        public void testDelegatedConstructorInapplicable() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegatedConstructorInapplicableDifferentParametersCount.kt")
+        public void testDelegatedConstructorInapplicableDifferentParametersCount() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicableDifferentParametersCount.kt");
+        }
+
         @Test
         @TestMetadata("eqEqCall_fromAny.kt")
         public void testEqEqCall_fromAny() throws Exception {

analysis/analysis-api-standalone/tests-gen/org/jetbrains/kotlin/analysis/api/standalone/fir/test/cases/generated/cases/components/callResolver/FirStandaloneNormalAnalysisSourceModuleResolveCandidatesTestGenerated.java

@@ -79,6 +79,12 @@ public class FirStandaloneNormalAnalysisSourceModuleResolveCandidatesTestGenerat
             runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/ambiguousWithInferredTypeParameters.kt");
         }
 
+        @Test
+        @TestMetadata("delegatedConstructor.kt")
+        public void testDelegatedConstructor() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/delegatedConstructor.kt");
+        }
+
         @Test
         @TestMetadata("implicitInvoke.kt")
         public void testImplicitInvoke() throws Exception {
@@ -207,6 +213,24 @@ public class FirStandaloneNormalAnalysisSourceModuleResolveCandidatesTestGenerat
             runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/consecutiveImplicitInvoke3.kt");
         }
 
+        @Test
+        @TestMetadata("delegatedConstructorApplicable.kt")
+        public void testDelegatedConstructorApplicable() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorApplicable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegatedConstructorInapplicable.kt")
+        public void testDelegatedConstructorInapplicable() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicable.kt");
+        }
+
+        @Test
+        @TestMetadata("delegatedConstructorInapplicableDifferentParametersCount.kt")
+        public void testDelegatedConstructorInapplicableDifferentParametersCount() throws Exception {
+            runTest("analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicableDifferentParametersCount.kt");
+        }
+
         @Test
         @TestMetadata("eqEqCall_fromAny.kt")
         public void testEqEqCall_fromAny() throws Exception {

analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/delegatedConstructor.descriptors.txt

@@ -0,0 +1,77 @@
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<null: OTHER_ERROR with <init>>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(): A
+        valueParameters = []
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {}
+  isInBestCandidates = false
+
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<null: OTHER_ERROR with <init>>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(p: kotlin.String): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = p
+            receiverType = null
+            returnType = kotlin.String
+            symbol = p: kotlin.String
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {
+      5 -> (KtVariableLikeSignature:
+        name = p
+        receiverType = null
+        returnType = kotlin.String
+        symbol = p: kotlin.String
+        callableIdIfNonLocal = null)
+    }
+  isInBestCandidates = false
+
+KtApplicableCallCandidateInfo:
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(x: kotlin.Int): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = x
+            receiverType = null
+            returnType = kotlin.Int
+            symbol = x: kotlin.Int
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {
+      5 -> (KtVariableLikeSignature:
+        name = x
+        receiverType = null
+        returnType = kotlin.Int
+        symbol = x: kotlin.Int
+        callableIdIfNonLocal = null)
+    }
+  isInBestCandidates = true

analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/delegatedConstructor.kt

@@ -0,0 +1,6 @@
+open class A(x: Int) {
+    protected constructor() : this(1) {}
+    private constructor(p: String) : this(2) {}
+}
+
+class B(): <expr>A</expr>(5)

analysis/analysis-api/testData/components/callResolver/resolveCandidates/multipleCandidates/delegatedConstructor.txt

@@ -0,0 +1,70 @@
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<TOO_MANY_ARGUMENTS: Too many arguments for protected constructor(): R|A|>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(): A
+        valueParameters = []
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {}
+  isInBestCandidates = false
+
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<INVISIBLE_REFERENCE: Symbol constructor(p: String): A is invisible>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(p: kotlin.String): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = p
+            receiverType = null
+            returnType = kotlin.String
+            symbol = p: kotlin.String
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {}
+  isInBestCandidates = false
+
+KtApplicableCallCandidateInfo:
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(x: kotlin.Int): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = x
+            receiverType = null
+            returnType = kotlin.Int
+            symbol = x: kotlin.Int
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {
+      5 -> (KtVariableLikeSignature:
+        name = x
+        receiverType = null
+        returnType = kotlin.Int
+        symbol = x: kotlin.Int
+        callableIdIfNonLocal = null)
+    }
+  isInBestCandidates = true

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorApplicable.kt

@@ -0,0 +1,4 @@
+open class A(x: Int) {
+}
+
+class B(): <expr>A</expr>(5)

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorApplicable.txt

@@ -0,0 +1,29 @@
+KtApplicableCallCandidateInfo:
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(x: kotlin.Int): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = x
+            receiverType = null
+            returnType = kotlin.Int
+            symbol = x: kotlin.Int
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {
+      5 -> (KtVariableLikeSignature:
+        name = x
+        receiverType = null
+        returnType = kotlin.Int
+        symbol = x: kotlin.Int
+        callableIdIfNonLocal = null)
+    }
+  isInBestCandidates = true

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicable.descriptors.txt

@@ -0,0 +1,30 @@
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<null: OTHER_ERROR with <init>>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(x: kotlin.String): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = x
+            receiverType = null
+            returnType = kotlin.String
+            symbol = x: kotlin.String
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {
+      5 -> (KtVariableLikeSignature:
+        name = x
+        receiverType = null
+        returnType = kotlin.String
+        symbol = x: kotlin.String
+        callableIdIfNonLocal = null)
+    }
+  isInBestCandidates = true

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicable.kt

@@ -0,0 +1,4 @@
+open class A(x: String) {
+}
+
+class B(): <expr>A</expr>(5)

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicable.txt

@@ -0,0 +1,30 @@
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<ARGUMENT_TYPE_MISMATCH: Argument type mismatch: actual type is kotlin/Int but kotlin/String was expected>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(x: kotlin.String): A
+        valueParameters = [
+          KtVariableLikeSignature:
+            name = x
+            receiverType = null
+            returnType = kotlin.String
+            symbol = x: kotlin.String
+            callableIdIfNonLocal = null
+        ]
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {
+      5 -> (KtVariableLikeSignature:
+        name = x
+        receiverType = null
+        returnType = kotlin.String
+        symbol = x: kotlin.String
+        callableIdIfNonLocal = null)
+    }
+  isInBestCandidates = true

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicableDifferentParametersCount.descriptors.txt

@@ -0,0 +1,16 @@
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<null: OTHER_ERROR with <init>>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(): A
+        valueParameters = []
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {}
+  isInBestCandidates = true

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicableDifferentParametersCount.kt

@@ -0,0 +1,4 @@
+open class A() {
+}
+
+class B(): <expr>A</expr>(5)

analysis/analysis-api/testData/components/callResolver/resolveCandidates/singleCandidate/delegatedConstructorInapplicableDifferentParametersCount.txt

@@ -0,0 +1,16 @@
+KtInapplicableCallCandidateInfo:
+  diagnostic = ERROR<TOO_MANY_ARGUMENTS: Too many arguments for public constructor(): R|A|>
+  candidate = KtDelegatedConstructorCall:
+    kind = SUPER_CALL
+    partiallyAppliedSymbol = KtPartiallyAppliedSymbol:
+      dispatchReceiver = null
+      extensionReceiver = null
+      signature = KtFunctionLikeSignature:
+        receiverType = null
+        returnType = A
+        symbol = <constructor>(): A
+        valueParameters = []
+        callableIdIfNonLocal = null
+    typeArgumentsMapping = {}
+    argumentMapping = {}
+  isInBestCandidates = true

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/resolver/AllCandidatesResolver.kt

@@ -9,18 +9,48 @@ import org.jetbrains.kotlin.analysis.low.level.api.fir.api.LLFirResolveSession
 import org.jetbrains.kotlin.analysis.low.level.api.fir.api.getOrBuildFirFile
 import org.jetbrains.kotlin.analysis.low.level.api.fir.api.resolveToFirSymbol
 import org.jetbrains.kotlin.analysis.utils.printer.parentsOfType
-import org.jetbrains.kotlin.fir.FirSession
-import org.jetbrains.kotlin.fir.OverloadCandidate
-import org.jetbrains.kotlin.fir.PrivateForInline
+import org.jetbrains.kotlin.fir.*
+import org.jetbrains.kotlin.fir.declarations.FirResolvePhase
+import org.jetbrains.kotlin.fir.expressions.FirDelegatedConstructorCall
 import org.jetbrains.kotlin.fir.expressions.FirFunctionCall
+import org.jetbrains.kotlin.fir.resolve.ScopeSession
 import org.jetbrains.kotlin.fir.resolve.calls.ResolutionContext
+import org.jetbrains.kotlin.fir.resolve.calls.tower.FirTowerResolver
+import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.FirBodyResolveTransformer
+import org.jetbrains.kotlin.fir.resolve.transformers.body.resolve.FirExpressionsResolveTransformer
 import org.jetbrains.kotlin.fir.symbols.SymbolInternals
+import org.jetbrains.kotlin.fir.types.ConeClassLikeType
+import org.jetbrains.kotlin.fir.types.coneType
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtDeclaration
 import org.jetbrains.kotlin.psi.KtElement
 
-class AllCandidatesResolver(firSession: FirSession) {
-    private val bodyResolveComponents = createStubBodyResolveComponents(firSession)
+class AllCandidatesResolver(private val firSession: FirSession) {
+    private val scopeSession = ScopeSession()
+
+    // This transformer is not intended for actual transformations and created here only to simplify access to resolve components
+    private val stubBodyResolveTransformer = FirBodyResolveTransformer(
+        session = firSession,
+        phase = FirResolvePhase.BODY_RESOLVE,
+        implicitTypeOnly = false,
+        scopeSession = scopeSession,
+    )
+
+    private val bodyResolveComponents = object : StubBodyResolveTransformerComponents(
+        firSession,
+        scopeSession,
+        stubBodyResolveTransformer,
+        stubBodyResolveTransformer.context,
+    ) {
+        val collector = AllCandidatesCollector(this, resolutionStageRunner)
+        val towerResolver = FirTowerResolver(this, resolutionStageRunner, collector)
+        override val callResolver = FirCallResolver(this, towerResolver)
+
+        init {
+            callResolver.initTransformer(FirExpressionsResolveTransformer(stubBodyResolveTransformer))
+        }
+    }
+
     private val resolutionContext = ResolutionContext(firSession, bodyResolveComponents, bodyResolveComponents.transformer.context)
 
     fun getAllCandidates(
@@ -33,12 +63,25 @@ class AllCandidatesResolver(firSession: FirSession) {
 
         val firFile = element.containingKtFile.getOrBuildFirFile(firResolveSession)
         return bodyResolveComponents.context.withFile(firFile, bodyResolveComponents) {
-            bodyResolveComponents.callResolver.collectAllCandidates(
-                functionCall,
-                calleeName,
-                bodyResolveComponents.context.containers,
-                resolutionContext
-            )
+            bodyResolveComponents.callResolver
+                .collectAllCandidates(functionCall, calleeName, bodyResolveComponents.context.containers, resolutionContext)
+        }
+    }
+
+    fun getAllCandidatesForDelegatedConstructor(
+        firResolveSession: LLFirResolveSession,
+        delegatedConstructorCall: FirDelegatedConstructorCall,
+        element: KtElement
+    ): List<OverloadCandidate> {
+        initializeBodyResolveContext(firResolveSession, element)
+
+        val firFile = element.containingKtFile.getOrBuildFirFile(firResolveSession)
+        val constructedType = delegatedConstructorCall.constructedTypeRef.coneType as ConeClassLikeType
+        return bodyResolveComponents.context.withFile(firFile, bodyResolveComponents) {
+            bodyResolveComponents.callResolver.resolveDelegatingConstructorCall(delegatedConstructorCall, constructedType)
+            bodyResolveComponents.collector.allCandidates.map {
+                OverloadCandidate(it, isInBestCandidates = it in bodyResolveComponents.collector.bestCandidates())
+            }
         }
     }
 

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/resolver/resolverUtils.kt

@@ -38,7 +38,7 @@ internal fun createStubBodyResolveComponents(firSession: FirSession): FirAbstrac
     )
 }
 
-private class StubBodyResolveTransformerComponents(
+internal open class StubBodyResolveTransformerComponents(
     session: FirSession,
     scopeSession: ScopeSession,
     transformer: FirBodyResolveTransformer,

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

@@ -53,6 +53,7 @@ import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 
 class FirCallResolver(
     private val components: FirAbstractBodyResolveTransformer.BodyResolveTransformerComponents,
+    private val towerResolver: FirTowerResolver = FirTowerResolver(components, components.resolutionStageRunner)
 ) {
     private val session = components.session
     private val overloadByLambdaReturnTypeResolver = FirOverloadByLambdaReturnTypeResolver(components)
@@ -63,10 +64,6 @@ class FirCallResolver(
         this.transformer = transformer
     }
 
-    private val towerResolver = FirTowerResolver(
-        components, components.resolutionStageRunner,
-    )
-
     val conflictResolver: ConeCallConflictResolver =
         session.callConflictResolverFactory.create(TypeSpecificityComparator.NONE, session.inferenceComponents, components)
 
@@ -168,24 +165,6 @@ class FirCallResolver(
         containingDeclarations: List<FirDeclaration> = transformer.components.containingDeclarations,
         resolutionContext: ResolutionContext = transformer.resolutionContext
     ): List<OverloadCandidate> {
-        class AllCandidatesCollector(
-            components: BodyResolveComponents,
-            resolutionStageRunner: ResolutionStageRunner
-        ) : CandidateCollector(components, resolutionStageRunner) {
-            private val allCandidatesSet = mutableSetOf<Candidate>()
-
-            override fun consumeCandidate(group: TowerGroup, candidate: Candidate, context: ResolutionContext): CandidateApplicability {
-                allCandidatesSet += candidate
-                return super.consumeCandidate(group, candidate, context)
-            }
-
-            // We want to get candidates at all tower levels.
-            override fun shouldStopAtTheLevel(group: TowerGroup): Boolean = false
-
-            val allCandidates: List<Candidate>
-                get() = allCandidatesSet.toList()
-        }
-
         val collector = AllCandidatesCollector(components, components.resolutionStageRunner)
         val origin = (qualifiedAccess as? FirFunctionCall)?.origin ?: FirFunctionCallOrigin.Regular
         val result =
@@ -843,3 +822,21 @@ class FirCallResolver(
 
 /** A candidate in the overload candidate set. */
 data class OverloadCandidate(val candidate: Candidate, val isInBestCandidates: Boolean)
+
+class AllCandidatesCollector(
+    components: BodyResolveComponents,
+    resolutionStageRunner: ResolutionStageRunner
+) : CandidateCollector(components, resolutionStageRunner) {
+    private val allCandidatesSet = mutableSetOf<Candidate>()
+
+    override fun consumeCandidate(group: TowerGroup, candidate: Candidate, context: ResolutionContext): CandidateApplicability {
+        allCandidatesSet += candidate
+        return super.consumeCandidate(group, candidate, context)
+    }
+
+    // We want to get candidates at all tower levels.
+    override fun shouldStopAtTheLevel(group: TowerGroup): Boolean = false
+
+    val allCandidates: List<Candidate>
+        get() = allCandidatesSet.toList()
+}

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/FirTowerResolver.kt

@@ -20,8 +20,8 @@ import org.jetbrains.kotlin.types.AbstractTypeChecker
 class FirTowerResolver(
     private val components: BodyResolveComponents,
     resolutionStageRunner: ResolutionStageRunner,
+    private val collector: CandidateCollector = CandidateCollector(components, resolutionStageRunner)
 ) {
-    private val collector = CandidateCollector(components, resolutionStageRunner)
     private val manager = TowerResolveManager(collector)
 
     fun runResolver(