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using System;
using System.Collections.Generic;
using System.Reflection;
namespace StardewModdingAPI.Framework
{
/// <summary>Manages deprecation warnings.</summary>
internal class DeprecationManager
{
/*********
** Properties
*********/
/// <summary>The deprecations which have already been logged (as 'mod name::noun phrase::version').</summary>
private readonly HashSet<string> LoggedDeprecations = new HashSet<string>(StringComparer.InvariantCultureIgnoreCase);
/// <summary>Encapsulates monitoring and logging for a given module.</summary>
private readonly IMonitor Monitor;
/// <summary>Tracks the installed mods.</summary>
private readonly ModRegistry ModRegistry;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="monitor">Encapsulates monitoring and logging for a given module.</param>
/// <param name="modRegistry">Tracks the installed mods.</param>
public DeprecationManager(IMonitor monitor, ModRegistry modRegistry)
{
this.Monitor = monitor;
this.ModRegistry = modRegistry;
}
/// <summary>Log a deprecation warning.</summary>
/// <param name="nounPhrase">A noun phrase describing what is deprecated.</param>
/// <param name="version">The SMAPI version which deprecated it.</param>
/// <param name="severity">How deprecated the code is.</param>
public void Warn(string nounPhrase, string version, DeprecationLevel severity)
{
this.Warn(this.ModRegistry.GetModFromStack(), nounPhrase, version, severity);
}
/// <summary>Log a deprecation warning.</summary>
/// <param name="source">The friendly mod name which used the deprecated code.</param>
/// <param name="nounPhrase">A noun phrase describing what is deprecated.</param>
/// <param name="version">The SMAPI version which deprecated it.</param>
/// <param name="severity">How deprecated the code is.</param>
public void Warn(string source, string nounPhrase, string version, DeprecationLevel severity)
{
// ignore if already warned
if (!this.MarkWarned(source ?? "<unknown>", nounPhrase, version))
return;
// show SMAPI 2.0 meta-warning
if(this.MarkWarned("SMAPI", "SMAPI 2.0 meta-warning", "2.0"))
this.Monitor.Log("Some of your mods will break in the upcoming SMAPI 2.0 release because they use obsolete APIs. Please check for a newer version of any mod showing 'may break' warnings, or let the author know about this message. For more information, see http://community.playstarbound.com/threads/135000.", LogLevel.Warn);
// build message
string message = $"{source ?? "An unknown mod"} may break in the upcoming SMAPI 2.0 release (detected {nounPhrase}).";
if (source == null)
message += $"{Environment.NewLine}{Environment.StackTrace}";
// log message
switch (severity)
{
case DeprecationLevel.Notice:
this.Monitor.Log(message, LogLevel.Trace);
break;
case DeprecationLevel.Info:
this.Monitor.Log(message, LogLevel.Debug);
break;
case DeprecationLevel.PendingRemoval:
this.Monitor.Log(message, LogLevel.Warn);
break;
default:
throw new NotSupportedException($"Unknown deprecation level '{severity}'");
}
}
/// <summary>Mark a deprecation warning as already logged.</summary>
/// <param name="nounPhrase">A noun phrase describing what is deprecated (e.g. "the Extensions.AsInt32 method").</param>
/// <param name="version">The SMAPI version which deprecated it.</param>
/// <returns>Returns whether the deprecation was successfully marked as warned. Returns <c>false</c> if it was already marked.</returns>
public bool MarkWarned(string nounPhrase, string version)
{
return this.MarkWarned(this.ModRegistry.GetModFromStack(), nounPhrase, version);
}
/// <summary>Mark a deprecation warning as already logged.</summary>
/// <param name="source">The friendly name of the assembly which used the deprecated code.</param>
/// <param name="nounPhrase">A noun phrase describing what is deprecated (e.g. "the Extensions.AsInt32 method").</param>
/// <param name="version">The SMAPI version which deprecated it.</param>
/// <returns>Returns whether the deprecation was successfully marked as warned. Returns <c>false</c> if it was already marked.</returns>
public bool MarkWarned(string source, string nounPhrase, string version)
{
if (string.IsNullOrWhiteSpace(source))
throw new InvalidOperationException("The deprecation source cannot be empty.");
string key = $"{source}::{nounPhrase}::{version}";
if (this.LoggedDeprecations.Contains(key))
return false;
this.LoggedDeprecations.Add(key);
return true;
}
/// <summary>Get whether a type implements the given virtual method.</summary>
/// <param name="subtype">The type to check.</param>
/// <param name="baseType">The base type which declares the virtual method.</param>
/// <param name="name">The method name.</param>
/// <param name="argumentTypes">The expected argument types.</param>
internal bool IsVirtualMethodImplemented(Type subtype, Type baseType, string name, Type[] argumentTypes)
{
MethodInfo method = subtype.GetMethod(nameof(Mod.Entry), argumentTypes);
return method.DeclaringType != baseType;
}
}
}
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