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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Text;
using Internal.TypeSystem;
using Internal.TypeSystem.Ecma;
using Debug = System.Diagnostics.Debug;
namespace ILCompiler
{
public static class DisplayNameHelpers
{
public static string GetDisplayName(this TypeSystemEntity entity)
{
return entity switch
{
MethodDesc method => method.GetDisplayName(),
FieldDesc field => field.GetDisplayName(),
TypeDesc type => type.GetDisplayName(),
#if !READYTORUN
PropertyPseudoDesc property => property.GetDisplayName(),
EventPseudoDesc @event => @event.GetDisplayName(),
#endif
_ => throw new InvalidOperationException(),
};
}
public static string GetDisplayName(this MethodDesc method)
{
var sb = new StringBuilder();
sb.Append(method.OwningType.GetDisplayName());
sb.Append('.');
if (method.IsConstructor)
{
sb.Append(method.OwningType.GetDisplayNameWithoutNamespace());
}
#if !READYTORUN
else if (method.GetPropertyForAccessor() is PropertyPseudoDesc property)
{
sb.Append(property.Name);
sb.Append('.');
sb.Append(property.GetMethod == method ? "get" : "set");
return sb.ToString();
}
else if (method.GetEventForAccessor() is EventPseudoDesc @event)
{
sb.Append(@event.Name);
sb.Append('.');
string accessor;
if (method.Name == @event.AddMethod.Name)
accessor = "add";
else if (method.Name == @event.RemoveMethod.Name)
accessor = "remove";
else if (method.Name == @event.RaiseMethod.Name)
accessor = "raise";
else
throw new NotSupportedException();
sb.Append(accessor);
}
#endif
else
{
sb.Append(method.Name);
}
if (method.HasInstantiation)
{
sb.Append('<');
for (int i = 0; i < method.Instantiation.Length - 1; i++)
sb.Append(method.Instantiation[i].GetDisplayNameWithoutNamespace()).Append(',');
sb.Append(method.Instantiation[method.Instantiation.Length - 1].GetDisplayNameWithoutNamespace());
sb.Append('>');
}
// Append parameters
sb.Append('(');
if (method.Signature.Length > 0)
{
for (int i = 0; i < method.Signature.Length - 1; i++)
sb.Append(method.Signature[i].GetDisplayNameWithoutNamespace()).Append(',');
sb.Append(method.Signature[method.Signature.Length - 1].GetDisplayNameWithoutNamespace());
}
sb.Append(')');
return sb.ToString();
}
public static string GetParameterDisplayName(this EcmaMethod method, int parameterIndex)
{
var reader = method.MetadataReader;
var methodDefinition = reader.GetMethodDefinition(method.Handle);
foreach (var parameterHandle in methodDefinition.GetParameters())
{
var parameter = reader.GetParameter(parameterHandle);
if (parameter.SequenceNumber == parameterIndex + 1)
return reader.GetString(parameter.Name);
}
return $"#{parameterIndex}";
}
public static string GetDisplayName(this FieldDesc field)
{
return new StringBuilder(field.OwningType.GetDisplayName())
.Append('.')
.Append(field.Name).ToString();
}
#if !READYTORUN
public static string GetDisplayName(this PropertyPseudoDesc property)
{
return new StringBuilder(property.OwningType.GetDisplayName())
.Append('.')
.Append(property.Name).ToString();
}
public static string GetDisplayName(this EventPseudoDesc @event)
{
return new StringBuilder(@event.OwningType.GetDisplayName())
.Append('.')
.Append(@event.Name).ToString();
}
#endif
public static string GetDisplayName(this TypeDesc type)
{
return Formatter.Instance.FormatName(type, FormatOptions.NamespaceQualify);
}
public static string GetDisplayNameWithoutNamespace(this TypeDesc type)
{
return Formatter.Instance.FormatName(type, FormatOptions.None);
}
private class Formatter : TypeNameFormatter<Formatter.Unit, FormatOptions>
{
public readonly static Formatter Instance = new Formatter();
public override Unit AppendName(StringBuilder sb, ArrayType type, FormatOptions options)
{
AppendName(sb, type.ElementType, options);
sb.Append('[');
if (type.Rank > 1)
sb.Append(new string(',', type.Rank - 1));
sb.Append(']');
return default;
}
public override Unit AppendName(StringBuilder sb, ByRefType type, FormatOptions options)
{
AppendName(sb, type.ParameterType, options);
sb.Append('&');
return default;
}
public override Unit AppendName(StringBuilder sb, PointerType type, FormatOptions options)
{
AppendName(sb, type.ParameterType, options);
sb.Append('*');
return default;
}
public override Unit AppendName(StringBuilder sb, FunctionPointerType type, FormatOptions options)
{
MethodSignature signature = type.Signature;
sb.Append("delegate*<");
for (int i = 0; i < signature.Length; i++)
{
AppendName(sb, signature[i], options);
sb.Append(',');
}
AppendName(sb, signature.ReturnType, options);
sb.Append('>');
return default;
}
public override Unit AppendName(StringBuilder sb, GenericParameterDesc type, FormatOptions options)
{
sb.Append(type.Name);
return default;
}
public override Unit AppendName(StringBuilder sb, SignatureMethodVariable type, FormatOptions options)
{
sb.Append("!!" + type.Index);
return default;
}
public override Unit AppendName(StringBuilder sb, SignatureTypeVariable type, FormatOptions options)
{
sb.Append("!" + type.Index);
return default;
}
protected override Unit AppendNameForInstantiatedType(StringBuilder sb, DefType type, FormatOptions options)
{
AppendName(sb, type.GetTypeDefinition(), options);
FormatOptions parameterOptions = options & ~FormatOptions.NamespaceQualify;
sb.Append('<');
for (int i = 0; i < type.Instantiation.Length; i++)
{
if (i != 0)
sb.Append(',');
AppendName(sb, type.Instantiation[i], parameterOptions);
}
sb.Append('>');
return default;
}
protected override Unit AppendNameForNamespaceType(StringBuilder sb, DefType type, FormatOptions options)
{
NamespaceQualify(sb, type, options);
sb.Append(type.Name);
return default;
}
protected override Unit AppendNameForNestedType(StringBuilder sb, DefType nestedType, DefType containingType, FormatOptions options)
{
if ((options & FormatOptions.NamespaceQualify) != 0)
{
AppendName(sb, containingType, options);
sb.Append('.');
}
sb.Append(nestedType.Name);
return default;
}
private void NamespaceQualify(StringBuilder sb, DefType type, FormatOptions options)
{
if ((options & FormatOptions.NamespaceQualify) != 0)
{
string ns = type.Namespace;
if (!string.IsNullOrEmpty(ns))
{
sb.Append(ns);
sb.Append('.');
}
}
}
public struct Unit { }
}
private enum FormatOptions
{
None = 0,
NamespaceQualify = 1,
}
}
}
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