IrSymbol interface hierarchy, initial import

"Symbols" are (presumably simpler) alternative to descriptors, tailored
for IR-based back-end implementation.

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrFunctionBase.kt

@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.ir.declarations.impl
 import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
 import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.expressions.IrBody
 import org.jetbrains.kotlin.ir.expressions.IrExpressionBody
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformer
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
@@ -28,9 +29,11 @@ abstract class IrFunctionBase(
         startOffset: Int,
         endOffset: Int,
         origin: IrDeclarationOrigin
-) : IrGeneralFunctionBase(startOffset, endOffset, origin), IrFunction {
+) : IrDeclarationBase(startOffset, endOffset, origin), IrFunction {
     private val defaults = LinkedHashMap<ValueParameterDescriptor, IrExpressionBody>()
 
+    final override var body: IrBody? = null
+
     override fun getDefault(parameter: ValueParameterDescriptor): IrExpressionBody? =
             defaults[parameter]
 

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrGeneralFunctionBase.kt

@@ -1,35 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.ir.declarations.impl
-
-import org.jetbrains.kotlin.ir.*
-import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
-import org.jetbrains.kotlin.ir.declarations.IrFunction
-import org.jetbrains.kotlin.ir.expressions.IrBody
-import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
-
-abstract class IrGeneralFunctionBase(
-        startOffset: Int,
-        endOffset: Int,
-        origin: IrDeclarationOrigin
-) : IrDeclarationBase(startOffset, endOffset, origin), IrFunction {
-    final override var body: IrBody? = null
-
-    override fun <D> acceptChildren(visitor: IrElementVisitor<Unit, D>, data: D) {
-        body?.accept(visitor, data)
-    }
-}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrAnonymousInitializerSymbol.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrAnonymousInitializer
+
+interface IrAnonymousInitializerSymbol : IrDeclarationSymbol {
+    override val declaration: IrAnonymousInitializer
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrCallSignature.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.types.KotlinType
+
+interface IrCallSignature {
+    val dispatchReceiverType: KotlinType?
+    val extensionReceiverType: KotlinType?
+    val valueParameterTypes: List<KotlinType>
+    val returnType: KotlinType
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrCallableSymbol.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.types.KotlinType
+
+interface IrCallableSymbol : IrMemberSymbol {
+    override val declaration: IrFunction
+
+    val returnType: KotlinType
+}
+

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrClassSymbol.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.descriptors.ClassKind
+import org.jetbrains.kotlin.ir.declarations.IrClass
+import org.jetbrains.kotlin.types.KotlinType
+
+interface IrClassSymbol : IrClassifierSymbol {
+    override val declaration: IrClass
+
+    val kind: ClassKind
+    val supertypes: List<KotlinType>
+    val isCompanionObject: Boolean
+    val isData: Boolean
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrClassifierSymbol.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+interface IrClassifierSymbol : IrMemberSymbol {
+    // TODO type constructor for symbols?
+    // val typeConstructor: TypeConstructor
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrConstructorSymbol.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrConstructor
+
+interface IrConstructorSymbol : IrCallableSymbol {
+    override val declaration: IrConstructor
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrDeclarationSymbol.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
+
+interface IrDeclarationSymbol : IrSymbol {
+    val declaration: IrDeclaration
+    val container: IrSymbol
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrEnumEntrySymbol.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrEnumEntry
+
+interface IrEnumEntrySymbol : IrMemberSymbol {
+    override val declaration: IrEnumEntry
+
+    val ordinal: Int
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrFieldSymbol.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrField
+import org.jetbrains.kotlin.types.KotlinType
+
+interface IrFieldSymbol : IrMemberSymbol {
+    override val declaration: IrField
+
+    val type: KotlinType
+    val isMutable: Boolean
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrFileSymbol.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrFile
+import org.jetbrains.kotlin.name.FqName
+
+interface IrFileSymbol : IrSymbol {
+    val fileName: String
+    val packageFqName: FqName
+    val element: IrFile
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrFunctionSymbol.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+interface IrFunctionSymbol : IrCallableSymbol {
+    val overridden: List<IrFunctionSymbol>
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrMemberSymbol.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+
+interface IrMemberSymbol : IrNamedSymbol {
+    val modality: Modality
+    val visibility: Visibility
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrNamedSymbol.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.name.Name
+
+interface IrNamedSymbol : IrDeclarationSymbol {
+    val name: Name
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrSymbol.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
+
+interface IrSymbol {
+    val annotations: MutableList<AnnotationDescriptor>
+}
+
+

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrTypeParameterSymbol.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.types.Variance
+
+interface IrTypeParameterSymbol : IrClassifierSymbol {
+    // TODO IrTypeParameter
+    // override val declaration: IrTypeParameter
+
+    val isReified: Boolean
+    val variance: Variance
+    val upperBounds: List<KotlinType>
+    val index: Int
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrValueParameterSymbol.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+interface IrValueParameterSymbol : IrValueSymbol {
+    // TODO IrValueParameter
+    // override val declaration: IrValueParameter
+
+    val index: Int
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrValueSymbol.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.types.KotlinType
+
+interface IrValueSymbol : IrNamedSymbol {
+    val type: KotlinType
+}
+

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/IrVariableSymbol.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols
+
+import org.jetbrains.kotlin.ir.declarations.IrVariable
+
+interface IrVariableSymbol : IrValueSymbol {
+    override val declaration: IrVariable
+
+    val isMutable: Boolean
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrAnonymousInitializerSymbolImpl.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.declarations.IrAnonymousInitializer
+import org.jetbrains.kotlin.ir.symbols.IrAnonymousInitializerSymbol
+
+class IrAnonymousInitializerSymbolImpl() : IrDeclarationSymbolBase(), IrAnonymousInitializerSymbol {
+    override lateinit var declaration: IrAnonymousInitializer
+
+    constructor(declaration: IrAnonymousInitializer) : this() {
+        this.declaration = declaration
+    }
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrCallableSymbolBase.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.symbols.IrCallableSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+abstract class IrCallableSymbolBase(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        override val returnType: KotlinType
+) : IrMemberSymbolBase(name, modality, visibility), IrCallableSymbol
+
+

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrClassSymbolImpl.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.ClassKind
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.declarations.IrClass
+import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+class IrClassSymbolImpl(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        override val kind: ClassKind,
+        override val supertypes: List<KotlinType>,
+        override val isData: Boolean,
+        override val isCompanionObject: Boolean
+) : IrClassifierSymbolBase(name, modality, visibility), IrClassSymbol {
+    override lateinit var declaration: IrClass
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrClassifierSymbolBase.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.symbols.IrClassifierSymbol
+import org.jetbrains.kotlin.name.Name
+
+abstract class IrClassifierSymbolBase(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility
+) : IrMemberSymbolBase(name, modality, visibility),
+        IrClassifierSymbol

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrConstructorSymbolImpl.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.declarations.IrConstructor
+import org.jetbrains.kotlin.ir.symbols.IrConstructorSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+class IrConstructorSymbolImpl(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        returnType: KotlinType
+) : IrCallableSymbolBase(name, modality, visibility, returnType), IrConstructorSymbol {
+    override lateinit var declaration: IrConstructor
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrDeclarationSymbolBase.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.symbols.IrDeclarationSymbol
+import org.jetbrains.kotlin.ir.symbols.IrSymbol
+
+abstract class IrDeclarationSymbolBase : IrSymbolBase(), IrDeclarationSymbol {
+    override final lateinit var container: IrSymbol
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrEnumEntrySymbolImpl.kt

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.declarations.IrEnumEntry
+import org.jetbrains.kotlin.ir.symbols.IrEnumEntrySymbol
+import org.jetbrains.kotlin.name.Name
+
+class IrEnumEntrySymbolImpl(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        override val ordinal: Int
+) : IrMemberSymbolBase(name, modality, visibility), IrEnumEntrySymbol {
+    override lateinit var declaration: IrEnumEntry
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrFieldSymbolImpl.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.declarations.IrField
+import org.jetbrains.kotlin.ir.symbols.IrFieldSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+class IrFieldSymbolImpl(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        override val type: KotlinType,
+        override val isMutable: Boolean
+) : IrMemberSymbolBase(name, modality, visibility), IrFieldSymbol {
+    override lateinit var declaration: IrField
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrFileSymbolImpl.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.declarations.IrFile
+import org.jetbrains.kotlin.ir.symbols.IrFileSymbol
+import org.jetbrains.kotlin.name.FqName
+
+class IrFileSymbolImpl(
+        override val fileName: String,
+        override val packageFqName: FqName
+) : IrSymbolBase(), IrFileSymbol {
+    override lateinit var element: IrFile
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrFunctionSymbolImpl.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.symbols.IrFunctionSymbol
+import org.jetbrains.kotlin.ir.symbols.IrSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.utils.SmartList
+
+class IrFunctionSymbolImpl(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        returnType: KotlinType
+) : IrCallableSymbolBase(name, modality, visibility, returnType), IrFunctionSymbol {
+    override lateinit var declaration: IrFunction
+
+    override val overridden: MutableList<IrFunctionSymbol> = SmartList()
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrMemberSymbolBase.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.symbols.IrMemberSymbol
+import org.jetbrains.kotlin.ir.symbols.IrSymbol
+import org.jetbrains.kotlin.name.Name
+
+abstract class IrMemberSymbolBase(
+        name: Name,
+        override val modality: Modality,
+        override val visibility: Visibility
+) : IrNamedSymbolBase(name), IrMemberSymbol {
+    constructor(name: Name, modality: Modality, visibility: Visibility, container: IrSymbol) : this(name, modality, visibility) {
+        this.container = container
+    }
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrNamedSymbolBase.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.symbols.IrNamedSymbol
+import org.jetbrains.kotlin.name.Name
+
+abstract class IrNamedSymbolBase(
+        override val name: Name
+) : IrDeclarationSymbolBase(), IrNamedSymbol

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrSymbolBase.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
+import org.jetbrains.kotlin.ir.symbols.IrSymbol
+import org.jetbrains.kotlin.utils.SmartList
+
+abstract class IrSymbolBase : IrSymbol {
+    override val annotations: MutableList<AnnotationDescriptor> = SmartList()
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrTypeParameterSymbolImpl.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibility
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
+import org.jetbrains.kotlin.ir.symbols.IrTypeParameterSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.types.Variance
+
+class IrTypeParameterSymbolImpl(
+        name: Name,
+        modality: Modality,
+        visibility: Visibility,
+        override val variance: Variance,
+        override val upperBounds: List<KotlinType>,
+        override val index: Int,
+        override val isReified: Boolean
+) : IrClassifierSymbolBase(name, modality, visibility), IrTypeParameterSymbol {
+    // TODO IrTypeParameter
+    override lateinit var declaration: IrDeclaration
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrValueParameterSymbolImpl.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
+import org.jetbrains.kotlin.ir.symbols.IrValueParameterSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+class IrValueParameterSymbolImpl(
+        name: Name,
+        type: KotlinType,
+        override val index: Int
+) : IrValueSymbolBase(name, type), IrValueParameterSymbol {
+    override lateinit var declaration: IrDeclaration
+}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrValueSymbolBase.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.symbols.IrValueSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+abstract class IrValueSymbolBase(
+        name: Name,
+        override val type: KotlinType
+) : IrNamedSymbolBase(name), IrValueSymbol
+

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/symbols/impl/IrVariableSymbolImpl.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.ir.symbols.impl
+
+import org.jetbrains.kotlin.ir.declarations.IrVariable
+import org.jetbrains.kotlin.ir.symbols.IrVariableSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.types.KotlinType
+
+class IrVariableSymbolImpl(
+        name: Name,
+        type: KotlinType,
+        override val isMutable: Boolean
+) : IrValueSymbolBase(name, type), IrVariableSymbol {
+    override lateinit var declaration: IrVariable
+}