Implement basic interpretation for KProperty

compiler/ir/ir.interpreter/build.gradle.kts

@@ -4,7 +4,8 @@ plugins {
 }
 
 dependencies {
-    compile(project(":compiler:ir.tree"))
+    compileOnly(project(":compiler:ir.tree"))
+    compileOnly(project(":kotlin-reflect-api"))
 }
 
 sourceSets {

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/IrInterpreter.kt

@@ -18,6 +18,7 @@ import org.jetbrains.kotlin.ir.interpreter.exceptions.*
 import org.jetbrains.kotlin.ir.interpreter.intrinsics.IntrinsicEvaluator
 import org.jetbrains.kotlin.ir.interpreter.proxy.CommonProxy.Companion.asProxy
 import org.jetbrains.kotlin.ir.interpreter.proxy.Proxy
+import org.jetbrains.kotlin.ir.interpreter.proxy.reflection.ReflectionProxy
 import org.jetbrains.kotlin.ir.interpreter.proxy.wrap
 import org.jetbrains.kotlin.ir.interpreter.stack.StackImpl
 import org.jetbrains.kotlin.ir.interpreter.stack.Variable
@@ -140,6 +141,7 @@ class IrInterpreter(private val irBuiltIns: IrBuiltIns, private val bodyMap: Map
                 is IrStringConcatenation -> interpretStringConcatenation(this)
                 is IrFunctionExpression -> interpretFunctionExpression(this)
                 is IrFunctionReference -> interpretFunctionReference(this)
+                is IrPropertyReference -> interpretPropertyReference(this)
                 is IrComposite -> interpretComposite(this)
 
                 else -> TODO("${this.javaClass} not supported")
@@ -317,6 +319,10 @@ class IrInterpreter(private val irBuiltIns: IrBuiltIns, private val bodyMap: Map
             return@newFrame when {
                 dispatchReceiver is Wrapper && !isInlineOnly -> dispatchReceiver.getMethod(irFunction).invokeMethod(irFunction)
                 irFunction.hasAnnotation(evaluateIntrinsicAnnotation) -> Wrapper.getStaticMethod(irFunction).invokeMethod(irFunction)
+                dispatchReceiver is ReflectionState -> {
+                    stack.pushReturnValue((dispatchReceiver.wrap(this) as ReflectionProxy).evaluate(expression, stack.getAll()))
+                    Next
+                }
                 dispatchReceiver is Primitive<*> -> calculateBuiltIns(irFunction) // 'is Primitive' check for js char and js long
                 irFunction.body == null ->
                     irFunction.trySubstituteFunctionBody() ?: irFunction.tryCalculateLazyConst() ?: calculateBuiltIns(irFunction)
@@ -873,4 +879,12 @@ class IrInterpreter(private val irBuiltIns: IrBuiltIns, private val bodyMap: Map
             else -> TODO("${expression.origin} not implemented")
         }
     }
+
+    private fun interpretPropertyReference(propertyReference: IrPropertyReference): ExecutionResult {
+        val dispatchReceiver = propertyReference.dispatchReceiver?.interpret()?.check { return it }?.let { stack.popReturnValue() }
+        val extensionReceiver = propertyReference.extensionReceiver?.interpret()?.check { return it }?.let { stack.popReturnValue() }
+        val propertyState = KPropertyState(propertyReference, dispatchReceiver, extensionReceiver)
+        stack.pushReturnValue(propertyState)
+        return Next
+    }
 }

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/proxy/Proxy.kt

@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.ir.interpreter.proxy
 import org.jetbrains.kotlin.ir.interpreter.IrInterpreter
 import org.jetbrains.kotlin.ir.interpreter.proxy.CommonProxy.Companion.asProxy
 import org.jetbrains.kotlin.ir.interpreter.proxy.LambdaProxy.Companion.asProxy
+import org.jetbrains.kotlin.ir.interpreter.proxy.reflection.ReflectionProxy.Companion.asProxy
 import org.jetbrains.kotlin.ir.interpreter.state.*
 
 internal interface Proxy {
@@ -29,6 +30,7 @@ internal fun State.wrap(interpreter: IrInterpreter, extendFrom: Class<*>? = null
         is Primitive<*> -> this.value
         is Common -> this.asProxy(interpreter, extendFrom, calledFromBuiltIns)
         is Lambda -> this.asProxy(interpreter)
+        is ReflectionState -> this.asProxy(interpreter)
         else -> throw AssertionError("${this::class} is unsupported as argument for wrap function")
     }
 }

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/proxy/reflection/AbstractKPropertyProxy.kt

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.ir.interpreter.proxy.reflection
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.ir.declarations.IrProperty
+import org.jetbrains.kotlin.ir.interpreter.IrInterpreter
+import org.jetbrains.kotlin.ir.interpreter.state.KPropertyState
+import org.jetbrains.kotlin.ir.interpreter.state.State
+import kotlin.reflect.KProperty
+import kotlin.reflect.KType
+import kotlin.reflect.KVisibility
+
+internal abstract class AbstractKPropertyProxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : ReflectionProxy, KProperty<State> {
+    private val propertyOwner: IrProperty
+        get() = state.propertyReference.symbol.owner
+
+    override val isAbstract: Boolean
+        get() = propertyOwner.modality == Modality.ABSTRACT
+    override val isConst: Boolean
+        get() = propertyOwner.isConst
+    override val isFinal: Boolean
+        get() = propertyOwner.modality == Modality.FINAL
+    override val isLateinit: Boolean
+        get() = propertyOwner.isLateinit
+    override val isOpen: Boolean
+        get() = propertyOwner.modality == Modality.OPEN
+    override val isSuspend: Boolean
+        get() = TODO("Not yet implemented")
+    override val name: String
+        get() = propertyOwner.name.asString()
+
+    override val annotations: List<Annotation>
+        get() = TODO("Not yet implemented")
+    override val returnType: KType
+        get() = TODO("Not yet implemented")
+    override val visibility: KVisibility?
+        get() = TODO("Not yet implemented")
+
+    override fun equals(other: Any?): Boolean {
+        TODO("Not yet implemented")
+    }
+
+    override fun hashCode(): Int {
+        TODO("Not yet implemented")
+    }
+
+    override fun toString(): String {
+        TODO("Not yet implemented")
+    }
+}

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/proxy/reflection/KProperty0Proxy.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.ir.interpreter.proxy.reflection
+
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.interpreter.IrInterpreter
+import org.jetbrains.kotlin.ir.interpreter.stack.Variable
+import org.jetbrains.kotlin.ir.interpreter.state.KPropertyState
+import org.jetbrains.kotlin.ir.interpreter.state.State
+import org.jetbrains.kotlin.ir.interpreter.toState
+import kotlin.reflect.*
+
+internal open class KProperty0Proxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : AbstractKPropertyProxy(state, interpreter), KProperty0<State> {
+    override fun evaluate(expression: IrCall, args: List<Variable>): State {
+        val result: Any = when (expression.symbol.owner.name.asString()) {
+            "<get-name>" -> name
+            "get" -> get()
+            "invoke" -> invoke()
+            else -> TODO("not supported expression for kProperty0")
+        }
+
+        return result.toState(expression.type)
+    }
+
+    override val getter: KProperty0.Getter<State>
+        get() = TODO("Not yet implemented")
+    override val parameters: List<KParameter>
+        get() = TODO("Not yet implemented")
+    override val typeParameters: List<KTypeParameter>
+        get() = TODO("Not yet implemented")
+
+    override fun call(vararg args: Any?): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun callBy(args: Map<KParameter, Any?>): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun get(): State {
+        return state.dispatchReceiver!!.getState(state.propertyReference.symbol)!!
+    }
+
+    override fun getDelegate(): Any? {
+        TODO("Not yet implemented")
+    }
+
+    override fun invoke(): State = get()
+}
+
+internal class KMutableProperty0Proxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : KProperty0Proxy(state, interpreter), KMutableProperty0<State> {
+    override fun evaluate(expression: IrCall, args: List<Variable>): State {
+        val result: Any = when (expression.symbol.owner.name.asString()) {
+            "set" -> set(args[1].state)
+            else -> return super.evaluate(expression, args)
+        }
+
+        return result.toState(expression.type)
+    }
+
+    override val setter: KMutableProperty0.Setter<State>
+        get() = TODO("Not yet implemented")
+
+    override fun set(value: State) {
+        state.dispatchReceiver!!.setField(Variable(state.propertyReference.symbol, value))
+    }
+}

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/proxy/reflection/KProperty1Proxy.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.ir.interpreter.proxy.reflection
+
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.interpreter.IrInterpreter
+import org.jetbrains.kotlin.ir.interpreter.stack.Variable
+import org.jetbrains.kotlin.ir.interpreter.state.KPropertyState
+import org.jetbrains.kotlin.ir.interpreter.state.State
+import org.jetbrains.kotlin.ir.interpreter.toState
+import kotlin.reflect.*
+
+internal open class KProperty1Proxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : AbstractKPropertyProxy(state, interpreter), KProperty1<State, State> {
+    override fun evaluate(expression: IrCall, args: List<Variable>): State {
+        val result: Any = when (expression.symbol.owner.name.asString()) {
+            "<get-name>" -> name
+            "get" -> get(args[1].state)
+            "invoke" -> invoke(args[1].state)
+            else -> TODO("not supported expression for kProperty0")
+        }
+
+        return result.toState(expression.type)
+    }
+
+    override val getter: KProperty1.Getter<State, State>
+        get() = TODO("Not yet implemented")
+    override val parameters: List<KParameter>
+        get() = TODO("Not yet implemented")
+    override val typeParameters: List<KTypeParameter>
+        get() = TODO("Not yet implemented")
+
+    override fun call(vararg args: Any?): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun callBy(args: Map<KParameter, Any?>): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun get(receiver: State): State {
+        return receiver.getState(state.propertyReference.symbol)!!
+    }
+
+    override fun getDelegate(receiver: State): Any? {
+        TODO("Not yet implemented")
+    }
+
+    override fun invoke(p1: State): State = get(p1)
+}
+
+internal class KMutableProperty1Proxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : KProperty1Proxy(state, interpreter), KMutableProperty1<State, State> {
+    override fun evaluate(expression: IrCall, args: List<Variable>): State {
+        val result: Any = when (expression.symbol.owner.name.asString()) {
+            "set" -> set(args[1].state, args[2].state)
+            else -> return super.evaluate(expression, args)
+        }
+
+        return result.toState(expression.type)
+    }
+
+    override val setter: KMutableProperty1.Setter<State, State>
+        get() = TODO("Not yet implemented")
+
+    override fun set(receiver: State, value: State) {
+        receiver.setField(Variable(state.propertyReference.symbol, value))
+    }
+}

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/proxy/reflection/KProperty2Proxy.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.ir.interpreter.proxy.reflection
+
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.interpreter.IrInterpreter
+import org.jetbrains.kotlin.ir.interpreter.stack.Variable
+import org.jetbrains.kotlin.ir.interpreter.state.KPropertyState
+import org.jetbrains.kotlin.ir.interpreter.state.State
+import org.jetbrains.kotlin.ir.interpreter.toState
+import kotlin.reflect.*
+
+internal open class KProperty2Proxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : AbstractKPropertyProxy(state, interpreter), KProperty2<State, State, State> {
+    override fun evaluate(expression: IrCall, args: List<Variable>): State {
+        val result: Any = when (expression.symbol.owner.name.asString()) {
+            "<get-name>" -> name
+            //"get" -> get()
+            //"invoke" -> invoke()
+            else -> TODO("not supported expression for kProperty0")
+        }
+
+        return result.toState(expression.type)
+    }
+
+    override val getter: KProperty2.Getter<State, State, State>
+        get() = TODO("Not yet implemented")
+    override val parameters: List<KParameter>
+        get() = TODO("Not yet implemented")
+    override val typeParameters: List<KTypeParameter>
+        get() = TODO("Not yet implemented")
+
+    override fun call(vararg args: Any?): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun callBy(args: Map<KParameter, Any?>): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun get(receiver1: State, receiver2: State): State {
+        TODO("Not yet implemented")
+    }
+
+    override fun getDelegate(receiver1: State, receiver2: State): Any? {
+        TODO("Not yet implemented")
+    }
+
+    override fun invoke(p1: State, p2: State): State = get(p1, p2)
+}
+
+internal class KMutableProperty2Proxy(
+    override val state: KPropertyState, override val interpreter: IrInterpreter
+) : KProperty2Proxy(state, interpreter), KMutableProperty2<State, State, State> {
+    override fun evaluate(expression: IrCall, args: List<Variable>): State {
+        val result: Any = when (expression.symbol.owner.name.asString()) {
+            //"set" -> set()
+            else -> return super.evaluate(expression, args)
+        }
+
+        return result.toState(expression.type)
+    }
+
+    override val setter: KMutableProperty2.Setter<State, State, State>
+        get() = TODO("Not yet implemented")
+
+    override fun set(receiver1: State, receiver2: State, value: State) {
+        TODO("Not yet implemented")
+    }
+}

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/proxy/reflection/ReflectionProxy.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.ir.interpreter.proxy.reflection
+
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.interpreter.IrInterpreter
+import org.jetbrains.kotlin.ir.interpreter.proxy.Proxy
+import org.jetbrains.kotlin.ir.interpreter.stack.Variable
+import org.jetbrains.kotlin.ir.interpreter.state.KPropertyState
+import org.jetbrains.kotlin.ir.interpreter.state.ReflectionState
+import org.jetbrains.kotlin.ir.interpreter.state.State
+
+internal interface ReflectionProxy : Proxy {
+    fun evaluate(expression: IrCall, args: List<Variable>): State
+
+    companion object {
+        internal fun ReflectionState.asProxy(interpreter: IrInterpreter): ReflectionProxy {
+            return when {
+                this is KPropertyState -> when {
+                    this.isKProperty0() -> KProperty0Proxy(this, interpreter)
+                    this.isKMutableProperty0() -> KMutableProperty0Proxy(this, interpreter)
+                    this.isKProperty1() -> KProperty1Proxy(this, interpreter)
+                    this.isKMutableProperty1() -> KMutableProperty1Proxy(this, interpreter)
+                    this.isKProperty2() -> KProperty2Proxy(this, interpreter)
+                    this.isKMutableProperty2() -> KMutableProperty2Proxy(this, interpreter)
+                    else -> TODO()
+                }
+                else -> TODO("not supported reference state")
+            }
+        }
+    }
+}

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/state/ReflectionState.kt

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.ir.interpreter.state
+
+import org.jetbrains.kotlin.ir.declarations.IrClass
+import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.expressions.IrPropertyReference
+import org.jetbrains.kotlin.ir.interpreter.stack.Variable
+import org.jetbrains.kotlin.ir.types.classOrNull
+import org.jetbrains.kotlin.ir.util.parentAsClass
+
+internal abstract class ReflectionState(override val irClass: IrClass) : State {
+    override val fields: MutableList<Variable> = mutableListOf()
+    override val typeArguments: MutableList<Variable> = mutableListOf()
+
+    override fun getIrFunctionByIrCall(expression: IrCall): IrFunction? = null
+}
+
+internal class KPropertyState(
+    val propertyReference: IrPropertyReference, val dispatchReceiver: State?, val extensionReceiver: State?
+) : ReflectionState(propertyReference.symbol.owner.parentAsClass) {
+    val className = propertyReference.type.classOrNull?.owner?.name?.asString()
+
+    fun isKProperty0(): Boolean {
+        return className == "KProperty0"
+    }
+
+    fun isKProperty1(): Boolean {
+        return className == "KProperty1"
+    }
+
+    fun isKProperty2(): Boolean {
+        return className == "KProperty2"
+    }
+
+    fun isKMutableProperty0(): Boolean {
+        return className == "KMutableProperty0"
+    }
+
+    fun isKMutableProperty1(): Boolean {
+        return className == "KMutableProperty1"
+    }
+
+    fun isKMutableProperty2(): Boolean {
+        return className == "KMutableProperty2"
+    }
+}