Support loading Java records

^KT-43677 In Progress
2020-11-23 16:02:26 +03:00
parent f25b7672a7
commit 513f7177ca
45 changed files with 688 additions and 61 deletions
@@ -27,6 +27,8 @@ import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.incremental.record
 import org.jetbrains.kotlin.load.java.JvmAbi
+import org.jetbrains.kotlin.load.java.descriptors.JavaClassDescriptor
+import org.jetbrains.kotlin.load.java.descriptors.JavaMethodDescriptor
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.DescriptorFactory
 import org.jetbrains.kotlin.resolve.DescriptorUtils
@@ -113,20 +115,37 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
    }

    private fun syntheticPropertyInClassNotCached(ownerClass: ClassDescriptor, name: Name): SyntheticPropertyHolder {
+        val forBean = syntheticPropertyHolderForBeanConvention(name, ownerClass)
+        if (forBean.descriptor != null) return forBean

-        fun result(descriptor: PropertyDescriptor?, getterNames: List<Name>, setterName: Name? = null): SyntheticPropertyHolder {
-            if (lookupTracker === LookupTracker.DO_NOTHING) {
-                return if (descriptor == null) SyntheticPropertyHolder.EMPTY else SyntheticPropertyHolder(descriptor, emptyList())
-            }
+        if (!ownerClass.isRecord()) return forBean

-            val names = ArrayList<Name>(getterNames.size + (setterName?.let { 1 } ?: 0))
+        val propertyForComponent = syntheticPropertyDescriptorForRecordComponent(name, ownerClass)

-            names.addAll(getterNames)
-            names.addIfNotNull(setterName)
+        return createSyntheticPropertyHolder(propertyForComponent, forBean.lookedNames, name)
+    }

-            return SyntheticPropertyHolder(descriptor, names)
+    private fun createSyntheticPropertyHolder(
+        descriptor: PropertyDescriptor?,
+        lookedNames: List<Name>,
+        additionalName: Name? = null
+    ): SyntheticPropertyHolder {
+        if (lookupTracker === LookupTracker.DO_NOTHING) {
+            return if (descriptor == null) SyntheticPropertyHolder.EMPTY else SyntheticPropertyHolder(descriptor, emptyList())
        }

+        val names = ArrayList<Name>(lookedNames.size + (additionalName?.let { 1 } ?: 0))
+
+        names.addAll(lookedNames)
+        names.addIfNotNull(additionalName)
+
+        return SyntheticPropertyHolder(descriptor, names)
+    }
+
+    private fun syntheticPropertyHolderForBeanConvention(
+        name: Name,
+        ownerClass: ClassDescriptor
+    ): SyntheticPropertyHolder {
        if (name.isSpecial) return SyntheticPropertyHolder.EMPTY

        val identifier = name.identifier
@@ -142,7 +161,7 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
            .flatMap { memberScope.getContributedFunctions(it, NoLookupLocation.FROM_SYNTHETIC_SCOPE) }
            .singleOrNull {
                it.hasJavaOriginInHierarchy() && isGoodGetMethod(it)
-            } ?: return result(null, possibleGetMethodNames)
+            } ?: return createSyntheticPropertyHolder(null, possibleGetMethodNames)


        val setMethodName = setMethodName(getMethod.name)
@@ -152,7 +171,25 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
        val propertyType = getMethod.returnType!!

        val descriptor = MyPropertyDescriptor.create(ownerClass, getMethod.original, setMethod?.original, name, propertyType)
-        return result(descriptor, possibleGetMethodNames, setMethodName)
+        return createSyntheticPropertyHolder(descriptor, possibleGetMethodNames, setMethodName)
+    }
+
+    private fun syntheticPropertyDescriptorForRecordComponent(
+        name: Name,
+        ownerClass: ClassDescriptor
+    ): PropertyDescriptor? {
+        val componentLikeMethod =
+            ownerClass.unsubstitutedMemberScope
+                .getContributedFunctions(name, NoLookupLocation.FROM_SYNTHETIC_SCOPE)
+                .singleOrNull(this::isGoodGetMethod) ?: return null
+
+        if (componentLikeMethod !is JavaMethodDescriptor || !componentLikeMethod.isForRecordComponent) {
+            return null
+        }
+
+        val propertyType = componentLikeMethod.returnType!!
+
+        return MyPropertyDescriptor.create(ownerClass, componentLikeMethod.original, null, name, propertyType)
    }

    private fun isGoodGetMethod(descriptor: FunctionDescriptor): Boolean {
@@ -249,8 +286,14 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
        if (classifier is ClassDescriptor) {
            for (descriptor in classifier.unsubstitutedMemberScope.getContributedDescriptors(DescriptorKindFilter.FUNCTIONS)) {
                if (descriptor is FunctionDescriptor) {
-                    val propertyName = SyntheticJavaPropertyDescriptor.propertyNameByGetMethodName(descriptor.getName()) ?: continue
-                    addIfNotNull(syntheticPropertyInClass(Pair(classifier, propertyName)).descriptor)
+                    val propertyName = SyntheticJavaPropertyDescriptor.propertyNameByGetMethodName(descriptor.getName())
+                    if (propertyName != null) {
+                        addIfNotNull(syntheticPropertyInClass(Pair(classifier, propertyName)).descriptor)
+                    }
+
+                    if (classifier.isRecord()) {
+                        addIfNotNull(syntheticPropertyInClass(Pair(classifier, descriptor.name)).descriptor)
+                    }
                }
            }
        } else {
@@ -258,6 +301,9 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
        }
    }

+    private fun ClassifierDescriptor.isRecord() =
+        this is JavaClassDescriptor && isRecord
+
    private fun SmartList<PropertyDescriptor>?.add(property: PropertyDescriptor?): SmartList<PropertyDescriptor>? {
        if (property == null) return this
        val list = if (this != null) this else SmartList()
@@ -280,15 +326,15 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
    }

    private class MyPropertyDescriptor(
-            containingDeclaration: DeclarationDescriptor,
-            original: PropertyDescriptor?,
-            annotations: Annotations,
-            modality: Modality,
-            visibility: DescriptorVisibility,
-            isVar: Boolean,
-            name: Name,
-            kind: CallableMemberDescriptor.Kind,
-            source: SourceElement
+        containingDeclaration: DeclarationDescriptor,
+        original: PropertyDescriptor?,
+        annotations: Annotations,
+        modality: Modality,
+        visibility: DescriptorVisibility,
+        isVar: Boolean,
+        name: Name,
+        kind: CallableMemberDescriptor.Kind,
+        source: SourceElement
    ) : SyntheticJavaPropertyDescriptor, PropertyDescriptorImpl(
        containingDeclaration, original, annotations, modality, visibility, isVar, name, kind, source,
        /* lateInit = */ false, /* isConst = */ false, /* isExpect = */ false, /* isActual = */ false, /* isExternal = */ false,
@@ -374,13 +420,13 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
        }

        override fun createSubstitutedCopy(
-                newOwner: DeclarationDescriptor,
-                newModality: Modality,
-                newVisibility: DescriptorVisibility,
-                original: PropertyDescriptor?,
-                kind: CallableMemberDescriptor.Kind,
-                newName: Name,
-                source: SourceElement
+            newOwner: DeclarationDescriptor,
+            newModality: Modality,
+            newVisibility: DescriptorVisibility,
+            original: PropertyDescriptor?,
+            kind: CallableMemberDescriptor.Kind,
+            newName: Name,
+            source: SourceElement
        ): PropertyDescriptorImpl {
            return MyPropertyDescriptor(newOwner, this, annotations, newModality, newVisibility, isVar, newName, kind, this.source).apply {
                getMethod = this@MyPropertyDescriptor.getMethod