FIR: Support loading built-in top-level functions

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/deserialization/FirMemberDeserializer.kt

@@ -0,0 +1,140 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.fir.deserialization
+
+import org.jetbrains.kotlin.descriptors.annotations.Annotations
+import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.declarations.FirNamedFunction
+import org.jetbrains.kotlin.fir.declarations.FirValueParameter
+import org.jetbrains.kotlin.fir.declarations.impl.FirMemberFunctionImpl
+import org.jetbrains.kotlin.fir.declarations.impl.FirTypeParameterImpl
+import org.jetbrains.kotlin.fir.declarations.impl.FirValueParameterImpl
+import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
+import org.jetbrains.kotlin.fir.symbols.CallableId
+import org.jetbrains.kotlin.fir.symbols.impl.FirFunctionSymbol
+import org.jetbrains.kotlin.fir.symbols.impl.FirTypeParameterSymbol
+import org.jetbrains.kotlin.fir.types.ConeKotlinType
+import org.jetbrains.kotlin.fir.types.FirTypeRef
+import org.jetbrains.kotlin.fir.types.impl.FirResolvedTypeRefImpl
+import org.jetbrains.kotlin.metadata.ProtoBuf
+import org.jetbrains.kotlin.metadata.deserialization.*
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.protobuf.MessageLite
+import org.jetbrains.kotlin.serialization.deserialization.AnnotatedCallableKind
+import org.jetbrains.kotlin.serialization.deserialization.ProtoEnumFlags
+import org.jetbrains.kotlin.serialization.deserialization.getName
+import org.jetbrains.kotlin.types.Variance
+
+class FirDeserializationContext(
+    val nameResolver: NameResolver,
+    val typeTable: TypeTable,
+    val versionRequirementTable: VersionRequirementTable,
+    val session: FirSession,
+    val packageFqName: FqName,
+    val relativeClassName: FqName?,
+    val typeDeserializer: FirTypeDeserializer,
+    val components: FirDeserializationComponents
+) {
+    fun childContext(
+        typeParameterProtos: List<ProtoBuf.TypeParameter>
+    ): FirDeserializationContext = FirDeserializationContext(
+        nameResolver, typeTable, versionRequirementTable, session, packageFqName, relativeClassName,
+        FirTypeDeserializer(
+            nameResolver, typeTable, typeParameterProtos, typeDeserializer
+        ),
+        components
+    )
+
+    val memberDeserializer: FirMemberDeserializer = FirMemberDeserializer(this)
+}
+
+// TODO: Move something here
+class FirDeserializationComponents
+
+class FirMemberDeserializer(private val c: FirDeserializationContext) {
+    private fun loadOldFlags(oldFlags: Int): Int {
+        val lowSixBits = oldFlags and 0x3f
+        val rest = (oldFlags shr 8) shl 6
+        return lowSixBits + rest
+    }
+
+    fun loadFunction(proto: ProtoBuf.Function): FirNamedFunction {
+        val flags = if (proto.hasFlags()) proto.flags else loadOldFlags(proto.oldFlags)
+
+        val receiverAnnotations =
+            // TODO: support annotations
+            Annotations.EMPTY
+
+        val versionRequirementTable =
+            // TODO: Support case for KOTLIN_SUSPEND_BUILT_IN_FUNCTION_FQ_NAME
+            c.versionRequirementTable
+
+        val callableName = c.nameResolver.getName(proto.name)
+        val symbol = FirFunctionSymbol(CallableId(c.packageFqName, c.relativeClassName, callableName))
+        val local = c.childContext(proto.typeParameterList)
+
+        // TODO: support contracts
+        return FirMemberFunctionImpl(
+            c.session,
+            null,
+            symbol,
+            callableName,
+            ProtoEnumFlags.visibility(Flags.VISIBILITY.get(flags)),
+            ProtoEnumFlags.modality(Flags.MODALITY.get(flags)),
+            Flags.IS_EXPECT_FUNCTION.get(flags),
+            false,
+            false,
+            Flags.IS_OPERATOR.get(flags),
+            Flags.IS_INFIX.get(flags),
+            Flags.IS_INLINE.get(flags),
+            Flags.IS_TAILREC.get(flags),
+            Flags.IS_EXTERNAL_FUNCTION.get(flags),
+            Flags.IS_SUSPEND.get(flags),
+            proto.receiverType(c.typeTable)?.let(local.typeDeserializer::type)?.toTypeRef(),
+            local.typeDeserializer.type(proto.returnType(c.typeTable)).toTypeRef()
+        ).apply {
+            typeParameters += local.typeDeserializer.ownTypeParameters.map { createTypeParameterSymbol(it.name).fir }
+            valueParameters += local.memberDeserializer.valueParameters(proto.valueParameterList)
+            annotations += getAnnotations(proto, flags, AnnotatedCallableKind.FUNCTION)
+        }
+    }
+
+    private fun createTypeParameterSymbol(name: Name): FirTypeParameterSymbol {
+        val firSymbol = FirTypeParameterSymbol()
+        FirTypeParameterImpl(c.session, null, firSymbol, name, variance = Variance.INVARIANT, isReified = false)
+        return firSymbol
+    }
+
+    private fun valueParameters(
+        valueParameters: List<ProtoBuf.ValueParameter>
+    ): List<FirValueParameter> {
+        return valueParameters.mapIndexed { i, proto ->
+            val flags = if (proto.hasFlags()) proto.flags else 0
+            FirValueParameterImpl(
+                c.session, null, c.nameResolver.getName(proto.name),
+                c.typeDeserializer.type(proto.type(c.typeTable)).toTypeRef(),
+                null, // TODO: default value
+                Flags.IS_CROSSINLINE.get(flags),
+                Flags.IS_NOINLINE.get(flags),
+                proto.varargElementType(c.typeTable) != null
+            ).apply {
+                annotations += emptyList() // TODO: parameter annotations
+            }
+        }.toList()
+    }
+
+
+    // TODO: Annotations
+    private fun getAnnotations(proto: MessageLite, flags: Int, kind: AnnotatedCallableKind) = emptyList<FirAnnotationCall>()
+
+    private fun ConeKotlinType.toTypeRef(): FirTypeRef {
+        // TODO: annotations
+        return FirResolvedTypeRefImpl(c.session, null, this, nullability.isNullable, emptyList())
+    }
+
+}
+

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

@@ -11,6 +11,7 @@ import org.jetbrains.kotlin.fir.service
 import org.jetbrains.kotlin.fir.symbols.*
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
 
 interface FirSymbolProvider {
 
@@ -26,6 +27,8 @@ interface FirSymbolProvider {
 
     fun getCallableSymbols(callableId: CallableId): List<ConeCallableSymbol>
 
+    fun getAllCallableNamesInPackage(fqName: FqName): Set<Name> = emptySet()
+
     fun getPackage(fqName: FqName): FqName? // TODO: Replace to symbol sometime
 
     // TODO: should not retrieve session through the FirElement::session

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/impl/FirCompositeSymbolProvider.kt

@@ -11,15 +11,12 @@ import org.jetbrains.kotlin.fir.symbols.ConeCallableSymbol
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeSymbol
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.utils.addToStdlib.firstNotNullResult
 
 class FirCompositeSymbolProvider(val providers: List<FirSymbolProvider>) : FirSymbolProvider {
     override fun getCallableSymbols(callableId: CallableId): List<ConeCallableSymbol> {
-        for (provider in providers) {
-            val symbols = provider.getCallableSymbols(callableId)
-            if (symbols.isNotEmpty()) return symbols
-        }
-        return emptyList()
+        return providers.flatMap { it.getCallableSymbols(callableId) }
     }
 
     override fun getPackage(fqName: FqName): FqName? {
@@ -29,4 +26,8 @@ class FirCompositeSymbolProvider(val providers: List<FirSymbolProvider>) : FirSy
     override fun getClassLikeSymbolByFqName(classId: ClassId): ConeClassLikeSymbol? {
         return providers.firstNotNullResult { it.getClassLikeSymbolByFqName(classId) }
     }
-}
+
+    override fun getAllCallableNamesInPackage(fqName: FqName): Set<Name> {
+        return providers.flatMapTo(mutableSetOf()) { it.getAllCallableNamesInPackage(fqName) }
+    }
+}

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/impl/FirDependenciesSymbolProviderImpl.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.fir.symbols.ConeCallableSymbol
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeSymbol
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
 
 class FirDependenciesSymbolProviderImpl(val session: FirSession) : AbstractFirSymbolProvider() {
     private val dependencyProviders by lazy {
@@ -26,13 +27,8 @@ class FirDependenciesSymbolProviderImpl(val session: FirSession) : AbstractFirSy
 
     override fun getCallableSymbols(callableId: CallableId): List<ConeCallableSymbol> {
         return callableCache.lookupCacheOrCalculate(callableId) {
-            for (provider in dependencyProviders) {
-                provider.getCallableSymbols(callableId).let {
-                    if (it.isNotEmpty()) return@lookupCacheOrCalculate it
-                }
-            }
-            emptyList()
-        }.orEmpty()
+            dependencyProviders.flatMap { provider -> provider.getCallableSymbols(callableId) }
+        } ?: emptyList()
     }
 
     override fun getClassLikeSymbolByFqName(classId: ClassId): ConeClassLikeSymbol? {
@@ -56,4 +52,8 @@ class FirDependenciesSymbolProviderImpl(val session: FirSession) : AbstractFirSy
             null
         }
     }
-}
+
+    override fun getAllCallableNamesInPackage(fqName: FqName): Set<Name> {
+        return dependencyProviders.flatMapTo(mutableSetOf()) { it.getAllCallableNamesInPackage(fqName) }
+    }
+}

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/impl/FirLibrarySymbolProviderImpl.kt

@@ -14,6 +14,8 @@ import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.declarations.impl.FirClassImpl
 import org.jetbrains.kotlin.fir.declarations.impl.FirTypeParameterImpl
+import org.jetbrains.kotlin.fir.deserialization.FirDeserializationComponents
+import org.jetbrains.kotlin.fir.deserialization.FirDeserializationContext
 import org.jetbrains.kotlin.fir.deserialization.FirTypeDeserializer
 import org.jetbrains.kotlin.fir.resolve.FirSymbolProvider
 import org.jetbrains.kotlin.fir.resolve.getOrPut
@@ -26,10 +28,7 @@ import org.jetbrains.kotlin.fir.symbols.impl.FirTypeParameterSymbol
 import org.jetbrains.kotlin.fir.types.impl.FirResolvedTypeRefImpl
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.builtins.BuiltInsBinaryVersion
-import org.jetbrains.kotlin.metadata.deserialization.Flags
-import org.jetbrains.kotlin.metadata.deserialization.NameResolverImpl
-import org.jetbrains.kotlin.metadata.deserialization.TypeTable
-import org.jetbrains.kotlin.metadata.deserialization.supertypes
+import org.jetbrains.kotlin.metadata.deserialization.*
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
@@ -42,11 +41,6 @@ import org.jetbrains.kotlin.utils.addToStdlib.firstNotNullResult
 import java.io.InputStream
 
 class FirLibrarySymbolProviderImpl(val session: FirSession) : FirSymbolProvider {
-    override fun getCallableSymbols(callableId: CallableId): List<ConeCallableSymbol> {
-        // TODO
-        return emptyList()
-    }
-
     private class BuiltInsPackageFragment(stream: InputStream, val fqName: FqName, val session: FirSession) {
         lateinit var version: BuiltInsBinaryVersion
 
@@ -70,6 +64,22 @@ class FirLibrarySymbolProviderImpl(val session: FirSession) : FirSymbolProvider
 
         val classDataFinder = ProtoBasedClassDataFinder(packageProto, nameResolver, version) { SourceElement.NO_SOURCE }
 
+        private val memberDeserializer by lazy {
+            FirDeserializationContext(
+                nameResolver, TypeTable(packageProto.`package`.typeTable),
+                VersionRequirementTable.EMPTY, // TODO:
+                session,
+                fqName,
+                null,
+                FirTypeDeserializer(
+                    nameResolver,
+                    TypeTable(packageProto.`package`.typeTable),
+                    emptyList(),
+                    null
+                ),
+                FirDeserializationComponents()
+            ).memberDeserializer
+        }
 
         val lookup = mutableMapOf<ClassId, ConeClassLikeSymbol>()
 
@@ -124,6 +134,16 @@ class FirLibrarySymbolProviderImpl(val session: FirSession) : FirSymbolProvider
                 }
             }
         }
+
+        fun getTopLevelCallableSymbols(name: Name): List<ConeCallableSymbol> {
+            return packageProto.`package`.functionList.filter { nameResolver.getName(it.name) == name }.map {
+                memberDeserializer.loadFunction(it).symbol
+            }
+        }
+
+        fun getAllCallableNames(): Set<Name> {
+            return packageProto.`package`.functionList.mapTo(mutableSetOf()) { nameResolver.getName(it.name) }
+        }
     }
 
     override fun getPackage(fqName: FqName): FqName? {
@@ -176,4 +196,21 @@ class FirLibrarySymbolProviderImpl(val session: FirSession) : FirSymbolProvider
             }
         }
     }
+
+    override fun getCallableSymbols(callableId: CallableId): List<ConeCallableSymbol> {
+        if (callableId.classId != null) {
+            // TODO: Support classes
+            return emptyList()
+        }
+
+        return allPackageFragments[callableId.packageName]?.flatMap {
+            it.getTopLevelCallableSymbols(callableId.callableName)
+        } ?: emptyList()
+    }
+
+    override fun getAllCallableNamesInPackage(fqName: FqName): Set<Name> {
+        return allPackageFragments[fqName]?.flatMapTo(mutableSetOf()) {
+            it.getAllCallableNames()
+        } ?: emptySet()
+    }
 }

compiler/fir/resolve/testData/builtIns/kotlin-collections.txt

@@ -0,0 +1 @@
+

compiler/fir/resolve/testData/builtIns/kotlin-ranges.txt

@@ -0,0 +1 @@
+

compiler/fir/resolve/testData/builtIns/kotlin.txt

@@ -0,0 +1,30 @@
+<T> public final inline fun arrayOf(vararg elements: R|kotlin/Array<out T>|): R|kotlin/Array<T>|
+
+<T> public final fun arrayOfNulls(size: R|kotlin/Int|): R|kotlin/Array<T>|
+
+public final fun booleanArrayOf(vararg elements: R|kotlin/BooleanArray|): R|kotlin/BooleanArray|
+
+public final fun byteArrayOf(vararg elements: R|kotlin/ByteArray|): R|kotlin/ByteArray|
+
+public final fun charArrayOf(vararg elements: R|kotlin/CharArray|): R|kotlin/CharArray|
+
+public final fun doubleArrayOf(vararg elements: R|kotlin/DoubleArray|): R|kotlin/DoubleArray|
+
+<T> public final inline fun emptyArray(): R|kotlin/Array<T>|
+
+<T> public final inline fun enumValueOf(name: R|kotlin/String|): R|T|
+
+<T> public final inline fun enumValues(): R|kotlin/Array<T>|
+
+public final fun floatArrayOf(vararg elements: R|kotlin/FloatArray|): R|kotlin/FloatArray|
+
+public final fun intArrayOf(vararg elements: R|kotlin/IntArray|): R|kotlin/IntArray|
+
+public final fun longArrayOf(vararg elements: R|kotlin/LongArray|): R|kotlin/LongArray|
+
+public final fun shortArrayOf(vararg elements: R|kotlin/ShortArray|): R|kotlin/ShortArray|
+
+public final operator fun R|kotlin/String|.plus(other: R|kotlin/Any|): R|kotlin/String|
+
+public final fun R|kotlin/Any|.toString(): R|kotlin/String|
+

compiler/fir/resolve/testData/resolve/fromBuilder/simpleClass.txt

@@ -13,7 +13,7 @@ FILE: simpleClass.kt
             private get(): R|kotlin/Int|
 
         public final override fun foo(x: R|kotlin/Int|, y: R|kotlin/String|): R|kotlin/String| {
-            ^foo <Unresolved name: plus>#(<Unresolved name: plus>#(R|<local>/y|, R|<local>/x|), R|/SomeClass.baz|)
+            ^foo R|kotlin/plus|(R|kotlin/plus|(R|<local>/y|, R|<local>/x|), R|/SomeClass.baz|)
         }
 
         public final override var bar: R|kotlin/Boolean|

compiler/fir/resolve/testData/resolve/simpleClass.txt

@@ -13,7 +13,7 @@ FILE: simpleClass.kt
             private get(): R|kotlin/Int|
 
         public final override fun foo(x: R|kotlin/Int|, y: R|kotlin/String|): R|kotlin/String| {
-            ^foo <Unresolved name: plus>#(<Unresolved name: plus>#(R|<local>/y|, R|<local>/x|), R|/SomeClass.baz|)
+            ^foo R|kotlin/plus|(R|kotlin/plus|(R|<local>/y|, R|<local>/x|), R|/SomeClass.baz|)
         }
 
         public final override var bar: R|kotlin/Boolean|

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/BuiltInsDeserializationForFirTestCase.kt

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.fir
+
+import com.intellij.psi.search.GlobalSearchScope
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
+import org.jetbrains.kotlin.fir.resolve.FirSymbolProvider
+import org.jetbrains.kotlin.fir.symbols.CallableId
+import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.test.ConfigurationKind
+import org.jetbrains.kotlin.test.KotlinTestUtils
+import org.jetbrains.kotlin.test.TestJdkKind
+import java.io.File
+
+class BuiltInsDeserializationForFirTestCase : AbstractFirResolveWithSessionTestCase() {
+    override fun createEnvironment(): KotlinCoreEnvironment {
+        return createEnvironmentWithJdk(ConfigurationKind.ALL, TestJdkKind.FULL_JDK)
+    }
+
+    fun testCallables() {
+        for (packageFqName in listOf(
+            KotlinBuiltIns.BUILT_INS_PACKAGE_FQ_NAME,
+            KotlinBuiltIns.COLLECTIONS_PACKAGE_FQ_NAME,
+            KotlinBuiltIns.RANGES_PACKAGE_FQ_NAME
+        )) {
+            checkCallablesInPackage(packageFqName)
+        }
+    }
+
+    private fun checkCallablesInPackage(packageFqName: FqName) {
+        val session = createSession(project, GlobalSearchScope.allScope(project))
+        val provider = session.getService(FirSymbolProvider::class)
+        val names = provider.getAllCallableNamesInPackage(packageFqName)
+
+        val builder = StringBuilder()
+        val firRenderer = FirRenderer(builder)
+
+        for (name in names) {
+            for (symbol in provider.getCallableSymbols(CallableId(packageFqName, null, name))) {
+                (symbol as FirCallableSymbol).fir.accept(firRenderer)
+                builder.appendln()
+            }
+        }
+
+        KotlinTestUtils.assertEqualsToFile(
+            File("compiler/fir/resolve/testData/builtIns/" + packageFqName.asString().replace('.', '-') + ".txt"),
+            builder.toString()
+        )
+    }
+}

idea/testData/fir/multiModule/basicWithPrimitiveJava/jvm/jvm.txt

@@ -5,7 +5,7 @@ FILE: jvm.kt
         public final fun test(): R|kotlin/Unit| {
             lval res1: R|kotlin/Boolean| = R|/Some.foo|(Int(1))
             lval res2: R|kotlin/Boolean| = R|/Some.foo|(<Unresolved name: unaryMinus>#(Int(1)))
-            lval res3: R|kotlin/Array<ft<java/lang/String, java/lang/String?>>| = R|/Some.bar|(<Unresolved name: intArrayOf>#(Int(0), Int(2), <Unresolved name: unaryMinus>#(Int(2))))
+            lval res3: R|kotlin/Array<ft<java/lang/String, java/lang/String?>>| = R|/Some.bar|(R|kotlin/intArrayOf|(Int(0), Int(2), <Unresolved name: unaryMinus>#(Int(2))))
         }
 
     }