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KotlinUtilities.cs
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KotlinUtilities.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Xamarin.Android.Tools.Bytecode
{
public static class KotlinUtilities
{
public static string ConvertKotlinTypeSignature (KotlinType type, KotlinFile metadata = null)
{
if (type is null)
return string.Empty;
var class_name = type.ClassName;
if (string.IsNullOrWhiteSpace (class_name)) {
if (metadata is KotlinClass klass) {
var tp = klass.TypeParameters.FirstOrDefault (t => t.Id == type.TypeParameter);
if (tp?.UpperBounds.FirstOrDefault ()?.ClassName != null)
return ConvertKotlinClassToJava (tp.UpperBounds.FirstOrDefault ()?.ClassName);
}
return "Ljava/lang/Object;";
}
var result = ConvertKotlinClassToJava (class_name);
if (result == "[")
result += ConvertKotlinTypeSignature (type.Arguments.FirstOrDefault ()?.Type);
return result;
}
public static string ConvertKotlinClassToJava (string className)
{
if (string.IsNullOrWhiteSpace (className))
return className;
className = className.Replace ('.', '$');
if (type_map.TryGetValue (className.TrimEnd (';'), out var result))
return result;
return "L" + className;
}
public static string GetSignature (this List<KotlinValueParameter> parameters)
{
return string.Join (string.Empty, parameters.Select (p => ConvertKotlinTypeSignature (p.Type)));
}
public static ParameterInfo[] GetFilteredParameters (this MethodInfo method)
{
// Kotlin adds this to some constructors but I cannot tell which ones,
// so we'll just ignore them if we see them on the Java side
return method.GetParameters ().Where (p => p.Type.BinaryName != "Lkotlin/jvm/internal/DefaultConstructorMarker;" && !p.Name.StartsWith ("$", StringComparison.Ordinal)).ToArray ();
}
public static string GetMethodNameWithoutSuffix (this MethodInfo method)
{
// Kotlin will rename some of its constructs to hide them from the Java runtime
// These take the form of thing like:
// - add-impl
// - add-H3FcsT8
// We strip them for trying to match up the metadata to the MethodInfo
var index = method.Name.IndexOfAny (new [] { '-', '$' });
return index >= 0 ? method.Name.Substring (0, index) : method.Name;
}
public static bool IsDefaultConstructorMarker (this MethodInfo method)
{
// A default constructor is synthetic and always has an int and a
// DefaultConstructorMarker as its final 2 parameters.
if (method.Name != "<init>")
return false;
if (!method.AccessFlags.HasFlag (MethodAccessFlags.Synthetic))
return false;
var parameters = method.GetParameters ();
if (parameters.Length < 2)
return false;
// Parameter list ends with `int, DefaultConstructorMarker`.
return parameters [parameters.Length - 2].Type.TypeSignature == "I" &&
parameters [parameters.Length - 1].Type.TypeSignature == "Lkotlin/jvm/internal/DefaultConstructorMarker;";
}
public static bool IsPubliclyVisible (this ClassAccessFlags flags) => flags.HasFlag (ClassAccessFlags.Public) || flags.HasFlag (ClassAccessFlags.Protected);
public static bool IsPubliclyVisible (this KotlinClassVisibility flags) => flags == KotlinClassVisibility.Public || flags == KotlinClassVisibility.Protected;
public static bool IsPubliclyVisible (this KotlinFunctionFlags flags) => flags.HasFlag (KotlinFunctionFlags.Public) || flags.HasFlag (KotlinFunctionFlags.Protected);
public static bool IsPubliclyVisible (this KotlinConstructorFlags flags) => flags.HasFlag (KotlinConstructorFlags.Public) || flags.HasFlag (KotlinConstructorFlags.Protected);
public static bool IsPubliclyVisible (this KotlinPropertyFlags flags) => flags.HasFlag (KotlinPropertyFlags.Public) || flags.HasFlag (KotlinPropertyFlags.Protected);
public static bool IsUnnamedParameter (this ParameterInfo parameter) => parameter.Name.Length > 1 && parameter.Name.StartsWith ("p", StringComparison.Ordinal) && int.TryParse (parameter.Name.Substring (1), out var _);
public static bool IsUnnamedParameter (this KotlinValueParameter parameter) => parameter.Name.Length > 1 && parameter.Name.StartsWith ("p", StringComparison.Ordinal) && int.TryParse (parameter.Name.Substring (1), out var _);
static Dictionary<string, string> type_map = new Dictionary<string, string> {
{ "kotlin/Int", "I" },
{ "kotlin/UInt", "I" },
{ "kotlin/Double", "D" },
{ "kotlin/Char", "C" },
{ "kotlin/Long", "J" },
{ "kotlin/ULong", "J" },
{ "kotlin/Float", "F" },
{ "kotlin/Short", "S" },
{ "kotlin/UShort", "S" },
{ "kotlin/Byte", "B" },
{ "kotlin/UByte", "B" },
{ "kotlin/Boolean", "Z" },
{ "kotlin/Unit", "V" },
{ "kotlin/Array", "[" },
{ "kotlin/IntArray", "[I" },
{ "kotlin/UIntArray", "[I" },
{ "kotlin/DoubleArray", "[D" },
{ "kotlin/CharArray", "[C" },
{ "kotlin/LongArray", "[J" },
{ "kotlin/ULongArray", "[J" },
{ "kotlin/FloatArray", "[F" },
{ "kotlin/ShortArray", "[S" },
{ "kotlin/UShortArray", "[S" },
{ "kotlin/ByteArray", "[B" },
{ "kotlin/UByteArray", "[B" },
{ "kotlin/BooleanArray", "[Z" },
{ "kotlin/Any", "Ljava/lang/Object;" },
{ "kotlin/Nothing", "Ljava/lang/Void;" },
{ "kotlin/Annotation", "Ljava/lang/annotation/Annotation;" },
{ "kotlin/String", "Ljava/lang/String;" },
{ "kotlin/CharSequence", "Ljava/lang/CharSequence;" },
{ "kotlin/Throwable", "Ljava/lang/Throwable;" },
{ "kotlin/Cloneable", "Ljava/lang/Cloneable;" },
{ "kotlin/Number", "Ljava/lang/Number;" },
{ "kotlin/Comparable", "Ljava/lang/Comparable;" },
{ "kotlin/Enum", "Ljava/lang/Enum;" },
{ "kotlin/collections/Iterator", "Ljava/util/Iterator;" },
{ "kotlin/collections/MutableIterator", "Ljava/util/Iterator;" },
{ "kotlin/collections/Collection", "Ljava/util/Collection;" },
{ "kotlin/collections/MutableCollection", "Ljava/util/Collection;" },
{ "kotlin/collections/List", "Ljava/util/List;" },
{ "kotlin/collections/MutableList", "Ljava/util/List;" },
{ "kotlin/collections/Set", "Ljava/util/Set;" },
{ "kotlin/collections/MutableSet", "Ljava/util/Set;" },
{ "kotlin/collections/Map", "Ljava/util/Map;" },
{ "kotlin/collections/MutableMap", "Ljava/util/Map;" },
{ "kotlin/collections/ListIterator", "Ljava/util/ListIterator;" },
{ "kotlin/collections/MutableListIterator", "Ljava/util/ListIterator;" },
{ "kotlin/collections/Iterable", "Ljava/lang/Iterable;" },
{ "kotlin/collections/MutableIterable", "Ljava/lang/Iterable;" },
{ "kotlin/collections/Map$Entry", "Ljava/util/Map$Entry;" },
{ "kotlin/collections/MutableMap$MutableEntry", "Ljava/util/Map$Entry;" },
{ "kotlin/Function0", "Lkotlin/jvm/functions/Function0;" },
{ "kotlin/Function1", "Lkotlin/jvm/functions/Function1;" },
{ "kotlin/Function2", "Lkotlin/jvm/functions/Function2;" },
{ "kotlin/Function3", "Lkotlin/jvm/functions/Function3;" },
{ "kotlin/Function4", "Lkotlin/jvm/functions/Function4;" },
{ "kotlin/Function5", "Lkotlin/jvm/functions/Function5;" },
{ "kotlin/Function6", "Lkotlin/jvm/functions/Function6;" },
{ "kotlin/Function7", "Lkotlin/jvm/functions/Function7;" },
{ "kotlin/Function8", "Lkotlin/jvm/functions/Function8;" },
{ "kotlin/Function9", "Lkotlin/jvm/functions/Function9;" },
{ "kotlin/Function10", "Lkotlin/jvm/functions/Function10;" },
{ "kotlin/Function11", "Lkotlin/jvm/functions/Function11;" },
{ "kotlin/Function12", "Lkotlin/jvm/functions/Function12;" },
{ "kotlin/Function13", "Lkotlin/jvm/functions/Function13;" },
{ "kotlin/Function14", "Lkotlin/jvm/functions/Function14;" },
{ "kotlin/Function15", "Lkotlin/jvm/functions/Function15;" },
{ "kotlin/Function16", "Lkotlin/jvm/functions/Function16;" },
{ "kotlin/Function17", "Lkotlin/jvm/functions/Function17;" },
{ "kotlin/Function18", "Lkotlin/jvm/functions/Function18;" },
{ "kotlin/Function19", "Lkotlin/jvm/functions/Function19;" },
{ "kotlin/Function20", "Lkotlin/jvm/functions/Function20;" },
{ "kotlin/Function21", "Lkotlin/jvm/functions/Function21;" },
{ "kotlin/Function22", "Lkotlin/jvm/functions/Function22;" },
};
}
}