[K2] Resolve bodies of const properties during IMPLICIT_TYPES_BODY_RESOLVE

This is required to implement constant evaluator on the FIR level.

#KT-64151

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

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.fir.declarations.impl.FirDefaultPropertyAccessor
 import org.jetbrains.kotlin.fir.declarations.impl.FirDefaultPropertyBackingField
 import org.jetbrains.kotlin.fir.declarations.synthetic.FirSyntheticProperty
 import org.jetbrains.kotlin.fir.declarations.utils.hasExplicitBackingField
+import org.jetbrains.kotlin.fir.declarations.utils.isConst
 import org.jetbrains.kotlin.fir.declarations.utils.isInline
 import org.jetbrains.kotlin.fir.declarations.utils.isLocal
 import org.jetbrains.kotlin.fir.diagnostics.ConeSimpleDiagnostic
@@ -144,7 +145,7 @@ open class FirDeclarationsResolveTransformer(
 
         val returnTypeRefBeforeResolve = property.returnTypeRef
         val cannotHaveDeepImplicitTypeRefs = property.backingField?.returnTypeRef !is FirImplicitTypeRef
-        if (implicitTypeOnly && returnTypeRefBeforeResolve !is FirImplicitTypeRef && cannotHaveDeepImplicitTypeRefs) {
+        if (!property.isConst && implicitTypeOnly && returnTypeRefBeforeResolve !is FirImplicitTypeRef && cannotHaveDeepImplicitTypeRefs) {
             return property
         }
 

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

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.declarations.synthetic.FirSyntheticProperty
+import org.jetbrains.kotlin.fir.declarations.utils.isConst
 import org.jetbrains.kotlin.fir.declarations.utils.isLocal
 import org.jetbrains.kotlin.fir.declarations.utils.visibility
 import org.jetbrains.kotlin.fir.diagnostics.ConeSimpleDiagnostic
@@ -167,7 +168,8 @@ open class FirImplicitAwareBodyResolveTransformer(
         }
 
         val canHaveDeepImplicitTypeRefs = member is FirProperty && member.backingField?.returnTypeRef is FirResolvedTypeRef == false
-        if (member.returnTypeRef is FirResolvedTypeRef && !canHaveDeepImplicitTypeRefs) return member
+        val isConstProperty = member is FirProperty && member.isConst
+        if (member.returnTypeRef is FirResolvedTypeRef && !canHaveDeepImplicitTypeRefs && !isConstProperty) return member
         val symbol = member.symbol
         val status = implicitBodyResolveComputationSession.getStatus(symbol)
         if (status is ImplicitBodyResolveComputationStatus.Computed) {

compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/FirResolvePhase.kt

@@ -172,6 +172,8 @@ enum class FirResolvePhase(val noProcessor: Boolean = false) {
      * val baz get() = foo() // implicit type is Int
      * ```
      *
+     * Also resolve initializers of const properties.
+     *
      * This is a [*jumping phase*][FirResolvePhase].
      *
      * @see TYPES
@@ -180,6 +182,12 @@ enum class FirResolvePhase(val noProcessor: Boolean = false) {
 
     /**
      * The compiler evaluates expressions that are used as initializers for const properties and defaults of annotation's constructor.
+     *
+     * This phase has two reasons to exist as a separate phase:
+     * 1. It is a synchronization point.
+     * Compiler visits this phase only when all const properties are resolved.
+     * This is especially useful when evaluating const properties from the Java world.
+     * 2. The Analysis API can get results of constant evaluation before [BODY_RESOLVE] phase.
      */
     CONSTANT_EVALUATION,