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// Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.kotlin;
import com.android.tools.r8.graph.DexField;
import com.android.tools.r8.graph.DexItemFactory;
import com.android.tools.r8.graph.DexMethod;
import com.android.tools.r8.graph.DexString;
import com.android.tools.r8.graph.DexType;
import it.unimi.dsi.fastutil.objects.Object2IntArrayMap;
import it.unimi.dsi.fastutil.objects.Object2IntMap;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
/** Class provides basic information about symbols related to Kotlin support. */
public final class Kotlin {
public final DexItemFactory factory;
public final Functional functional;
public final Intrinsics intrinsics;
public final Metadata metadata;
public final _Assertions assertions;
public static final String NAME = "kotlin";
public static final String PACKAGE_PREFIX = "L" + NAME + "/";
public static final class ClassClassifiers {
public static final String arrayBinaryName = NAME + "/Array";
public static final String anyDescriptor = PACKAGE_PREFIX + "Any;";
public static final String anyName = NAME + "/Any";
}
public Kotlin(DexItemFactory factory) {
this.factory = factory;
this.functional = new Functional();
this.intrinsics = new Intrinsics();
this.metadata = new Metadata();
this.assertions = new _Assertions();
}
public final class Functional {
// NOTE: Kotlin stdlib defines interface Function0 till Function22 explicitly, see:
// https://github.com/JetBrains/kotlin/blob/master/libraries/
// stdlib/jvm/runtime/kotlin/jvm/functions/Functions.kt
//
// For functions with arity bigger that 22 it is supposed to use FunctionN as described
// in https://github.com/JetBrains/kotlin/blob/master/spec-docs/function-types.md,
// but in current implementation (v1.2.21) defining such a lambda results in:
// > "Error: A JNI error has occurred, please check your installation and try again"
//
// This implementation just ignores lambdas with arity > 22.
private final Object2IntMap<DexType> functions =
new Object2IntArrayMap<>(
IntStream.rangeClosed(0, 22)
.boxed()
.collect(
Collectors.toMap(
i ->
factory.createType(PACKAGE_PREFIX + "jvm/functions/Function" + i + ";"),
Function.identity())));
private Functional() {
}
public final DexString kotlinStyleLambdaInstanceName = factory.createString("INSTANCE");
public final DexType functionBase =
factory.createType(PACKAGE_PREFIX + "jvm/internal/FunctionBase;");
public final DexType lambdaType = factory.createType(PACKAGE_PREFIX + "jvm/internal/Lambda;");
public final DexMethod lambdaInitializerMethod = factory.createMethod(
lambdaType,
factory.createProto(factory.voidType, factory.intType),
factory.constructorMethodName);
public boolean isFunctionInterface(DexType type) {
return functions.containsKey(type);
}
public int getArity(DexType type) {
assert isFunctionInterface(type)
: "Request to retrieve the arity from non-Kotlin-Function: " + type.toSourceString();
return functions.getInt(type);
}
}
public final class Metadata {
public final DexString kind = factory.createString("k");
public final DexString metadataVersion = factory.createString("mv");
public final DexString bytecodeVersion = factory.createString("bv");
public final DexString data1 = factory.createString("d1");
public final DexString data2 = factory.createString("d2");
public final DexString extraString = factory.createString("xs");
public final DexString packageName = factory.createString("pn");
public final DexString extraInt = factory.createString("xi");
}
public final class _Assertions {
public final DexType type = factory.createType(PACKAGE_PREFIX + "_Assertions;");
public final DexString enabledFieldName = factory.createString("ENABLED");
public final DexField enabledField =
factory.createField(type, factory.booleanType, enabledFieldName);
}
// kotlin.jvm.internal.Intrinsics class
public final class Intrinsics {
public final DexType type = factory.createType(PACKAGE_PREFIX + "jvm/internal/Intrinsics;");
public final DexMethod throwParameterIsNullException = factory.createMethod(type,
factory.createProto(factory.voidType, factory.stringType), "throwParameterIsNullException");
public final DexMethod checkParameterIsNotNull = factory.createMethod(type,
factory.createProto(factory.voidType, factory.objectType, factory.stringType),
"checkParameterIsNotNull");
public final DexMethod throwNpe = factory.createMethod(
type, factory.createProto(factory.voidType), "throwNpe");
}
}