mirror of
https://github.com/Alex-Rachel/TEngine.git
synced 2025-08-14 16:51:28 +00:00
639 lines
23 KiB
C#
639 lines
23 KiB
C#
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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#if COREFX
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using System.Linq;
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#endif
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#if PROFILE259
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using System.Reflection;
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using System.Linq;
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#else
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using System.Reflection;
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#endif
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namespace ProtoBuf
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{
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/// <summary>
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/// Not all frameworks are created equal (fx1.1 vs fx2.0,
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/// micro-framework, compact-framework,
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/// silverlight, etc). This class simply wraps up a few things that would
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/// otherwise make the real code unnecessarily messy, providing fallback
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/// implementations if necessary.
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/// </summary>
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internal sealed class Helpers
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{
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private Helpers() { }
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public static StringBuilder AppendLine(StringBuilder builder)
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{
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return builder.AppendLine();
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}
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[System.Diagnostics.Conditional("DEBUG")]
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public static void DebugWriteLine(string message, object obj)
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{
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#if DEBUG
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string suffix;
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try
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{
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suffix = obj == null ? "(null)" : obj.ToString();
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}
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catch
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{
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suffix = "(exception)";
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}
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DebugWriteLine(message + ": " + suffix);
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#endif
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}
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[System.Diagnostics.Conditional("DEBUG")]
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public static void DebugWriteLine(string message)
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{
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#if DEBUG
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System.Diagnostics.Debug.WriteLine(message);
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#endif
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}
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[System.Diagnostics.Conditional("TRACE")]
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public static void TraceWriteLine(string message)
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{
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#if TRACE
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#if CF2 || PORTABLE || COREFX || PROFILE259
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System.Diagnostics.Debug.WriteLine(message);
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#else
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System.Diagnostics.Trace.WriteLine(message);
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#endif
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#endif
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}
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[System.Diagnostics.Conditional("DEBUG")]
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public static void DebugAssert(bool condition, string message)
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{
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#if DEBUG
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if (!condition)
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{
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System.Diagnostics.Debug.Assert(false, message);
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}
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#endif
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}
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[System.Diagnostics.Conditional("DEBUG")]
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public static void DebugAssert(bool condition, string message, params object[] args)
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{
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#if DEBUG
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if (!condition) DebugAssert(false, string.Format(message, args));
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#endif
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}
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[System.Diagnostics.Conditional("DEBUG")]
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public static void DebugAssert(bool condition)
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{
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#if DEBUG
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if (!condition && System.Diagnostics.Debugger.IsAttached) System.Diagnostics.Debugger.Break();
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System.Diagnostics.Debug.Assert(condition);
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#endif
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}
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#if !NO_RUNTIME
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public static void Sort(int[] keys, object[] values)
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{
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// bubble-sort; it'll work on MF, has small code,
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// and works well-enough for our sizes. This approach
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// also allows us to do `int` compares without having
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// to go via IComparable etc, so win:win
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bool swapped;
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do
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{
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swapped = false;
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for (int i = 1; i < keys.Length; i++)
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{
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if (keys[i - 1] > keys[i])
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{
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int tmpKey = keys[i];
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keys[i] = keys[i - 1];
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keys[i - 1] = tmpKey;
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object tmpValue = values[i];
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values[i] = values[i - 1];
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values[i - 1] = tmpValue;
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swapped = true;
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}
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}
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} while (swapped);
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}
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#endif
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#if COREFX
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internal static MemberInfo GetInstanceMember(TypeInfo declaringType, string name)
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{
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var members = declaringType.AsType().GetMember(name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
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switch(members.Length)
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{
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case 0: return null;
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case 1: return members[0];
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default: throw new AmbiguousMatchException(name);
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}
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}
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internal static MethodInfo GetInstanceMethod(Type declaringType, string name)
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{
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foreach (MethodInfo method in declaringType.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
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{
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if (method.Name == name) return method;
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}
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return null;
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}
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internal static MethodInfo GetInstanceMethod(TypeInfo declaringType, string name)
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{
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return GetInstanceMethod(declaringType.AsType(), name); ;
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}
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internal static MethodInfo GetStaticMethod(Type declaringType, string name)
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{
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foreach (MethodInfo method in declaringType.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic))
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{
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if (method.Name == name) return method;
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}
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return null;
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}
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internal static MethodInfo GetStaticMethod(TypeInfo declaringType, string name)
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{
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return GetStaticMethod(declaringType.AsType(), name);
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}
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internal static MethodInfo GetStaticMethod(Type declaringType, string name, Type[] parameterTypes)
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{
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foreach(MethodInfo method in declaringType.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic))
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{
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if (method.Name == name && IsMatch(method.GetParameters(), parameterTypes)) return method;
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}
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return null;
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}
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internal static MethodInfo GetInstanceMethod(Type declaringType, string name, Type[] parameterTypes)
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{
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foreach (MethodInfo method in declaringType.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
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{
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if (method.Name == name && IsMatch(method.GetParameters(), parameterTypes)) return method;
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}
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return null;
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}
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internal static MethodInfo GetInstanceMethod(TypeInfo declaringType, string name, Type[] types)
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{
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return GetInstanceMethod(declaringType.AsType(), name, types);
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}
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#elif PROFILE259
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internal static MemberInfo GetInstanceMember(TypeInfo declaringType, string name)
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{
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IEnumerable<MemberInfo> members = declaringType.DeclaredMembers;
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IList<MemberInfo> found = new List<MemberInfo>();
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foreach (MemberInfo member in members)
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{
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if (member.Name.Equals(name))
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{
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found.Add(member);
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}
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}
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switch (found.Count)
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{
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case 0: return null;
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case 1: return found.First();
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default: throw new AmbiguousMatchException(name);
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}
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}
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internal static MethodInfo GetInstanceMethod(Type declaringType, string name)
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{
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var methods = declaringType.GetRuntimeMethods();
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foreach (MethodInfo method in methods)
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{
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if (method.Name == name)
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{
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return method;
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}
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}
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return null;
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}
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internal static MethodInfo GetInstanceMethod(TypeInfo declaringType, string name)
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{
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return GetInstanceMethod(declaringType.AsType(), name); ;
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}
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internal static MethodInfo GetStaticMethod(Type declaringType, string name)
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{
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var methods = declaringType.GetRuntimeMethods();
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foreach (MethodInfo method in methods)
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{
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if (method.Name == name)
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{
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return method;
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}
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}
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return null;
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}
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internal static MethodInfo GetStaticMethod(TypeInfo declaringType, string name)
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{
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return GetStaticMethod(declaringType.AsType(), name);
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}
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internal static MethodInfo GetStaticMethod(Type declaringType, string name, Type[] parameterTypes)
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{
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var methods = declaringType.GetRuntimeMethods();
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foreach (MethodInfo method in methods)
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{
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if (method.Name == name &&
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IsMatch(method.GetParameters(), parameterTypes))
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{
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return method;
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}
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}
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return null;
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}
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internal static MethodInfo GetInstanceMethod(Type declaringType, string name, Type[] parameterTypes)
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{
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var methods = declaringType.GetRuntimeMethods();
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foreach (MethodInfo method in methods)
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{
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if (method.Name == name &&
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IsMatch(method.GetParameters(), parameterTypes))
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{
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return method;
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}
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}
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return null;
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}
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internal static MethodInfo GetInstanceMethod(TypeInfo declaringType, string name, Type[] types)
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{
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return GetInstanceMethod(declaringType.AsType(), name, types);
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}
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#else
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internal static MethodInfo GetInstanceMethod(Type declaringType, string name)
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{
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return declaringType.GetMethod(name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
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}
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internal static MethodInfo GetStaticMethod(Type declaringType, string name)
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{
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return declaringType.GetMethod(name, BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
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}
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internal static MethodInfo GetStaticMethod(Type declaringType, string name, Type[] parameterTypes)
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{
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#if PORTABLE
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foreach (MethodInfo method in declaringType.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic))
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{
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if (method.Name == name && IsMatch(method.GetParameters(), parameterTypes)) return method;
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}
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return null;
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#else
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return declaringType.GetMethod(name, BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic, null, parameterTypes, null);
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#endif
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}
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internal static MethodInfo GetInstanceMethod(Type declaringType, string name, Type[] types)
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{
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if (types == null) types = EmptyTypes;
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#if PORTABLE || COREFX
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MethodInfo method = declaringType.GetMethod(name, types);
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if (method != null && method.IsStatic) method = null;
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return method;
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#else
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return declaringType.GetMethod(name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
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null, types, null);
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#endif
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}
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#endif
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internal static bool IsSubclassOf(Type type, Type baseClass)
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{
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#if COREFX || PROFILE259
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return type.GetTypeInfo().IsSubclassOf(baseClass);
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#else
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return type.IsSubclassOf(baseClass);
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#endif
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}
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public readonly static Type[] EmptyTypes =
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#if PORTABLE || CF2 || CF35 || PROFILE259
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new Type[0];
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#else
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Type.EmptyTypes;
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#endif
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#if COREFX || PROFILE259
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private static readonly Type[] knownTypes = new Type[] {
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typeof(bool), typeof(char), typeof(sbyte), typeof(byte),
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typeof(short), typeof(ushort), typeof(int), typeof(uint),
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typeof(long), typeof(ulong), typeof(float), typeof(double),
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typeof(decimal), typeof(string),
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typeof(DateTime), typeof(TimeSpan), typeof(Guid), typeof(Uri),
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typeof(byte[]), typeof(Type)};
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private static readonly ProtoTypeCode[] knownCodes = new ProtoTypeCode[] {
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ProtoTypeCode.Boolean, ProtoTypeCode.Char, ProtoTypeCode.SByte, ProtoTypeCode.Byte,
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ProtoTypeCode.Int16, ProtoTypeCode.UInt16, ProtoTypeCode.Int32, ProtoTypeCode.UInt32,
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ProtoTypeCode.Int64, ProtoTypeCode.UInt64, ProtoTypeCode.Single, ProtoTypeCode.Double,
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ProtoTypeCode.Decimal, ProtoTypeCode.String,
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ProtoTypeCode.DateTime, ProtoTypeCode.TimeSpan, ProtoTypeCode.Guid, ProtoTypeCode.Uri,
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ProtoTypeCode.ByteArray, ProtoTypeCode.Type
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};
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#endif
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public static ProtoTypeCode GetTypeCode(Type type)
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{
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#if COREFX || PROFILE259
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if (IsEnum(type))
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{
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type = Enum.GetUnderlyingType(type);
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}
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int idx = Array.IndexOf<Type>(knownTypes, type);
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if (idx >= 0) return knownCodes[idx];
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return type == null ? ProtoTypeCode.Empty : ProtoTypeCode.Unknown;
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#else
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TypeCode code = Type.GetTypeCode(type);
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switch (code)
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{
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case TypeCode.Empty:
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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case TypeCode.UInt32:
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case TypeCode.Int64:
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case TypeCode.UInt64:
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case TypeCode.Single:
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case TypeCode.Double:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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return (ProtoTypeCode)code;
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}
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if (type == typeof(TimeSpan)) return ProtoTypeCode.TimeSpan;
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if (type == typeof(Guid)) return ProtoTypeCode.Guid;
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if (type == typeof(Uri)) return ProtoTypeCode.Uri;
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#if PORTABLE
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// In PCLs, the Uri type may not match (WinRT uses Internal/Uri, .Net uses System/Uri), so match on the full name instead
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if (type.FullName == typeof(Uri).FullName) return ProtoTypeCode.Uri;
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#endif
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if (type == typeof(byte[])) return ProtoTypeCode.ByteArray;
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if (type == typeof(Type)) return ProtoTypeCode.Type;
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return ProtoTypeCode.Unknown;
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#endif
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}
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internal static Type GetUnderlyingType(Type type)
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{
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return Nullable.GetUnderlyingType(type);
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}
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internal static bool IsValueType(Type type)
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{
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#if COREFX || PROFILE259
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return type.GetTypeInfo().IsValueType;
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#else
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return type.IsValueType;
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#endif
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}
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internal static bool IsSealed(Type type)
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{
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#if COREFX || PROFILE259
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return type.GetTypeInfo().IsSealed;
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#else
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return type.IsSealed;
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#endif
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}
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internal static bool IsClass(Type type)
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{
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#if COREFX || PROFILE259
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return type.GetTypeInfo().IsClass;
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#else
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return type.IsClass;
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#endif
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}
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internal static bool IsEnum(Type type)
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{
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#if COREFX || PROFILE259
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return type.GetTypeInfo().IsEnum;
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#else
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return type.IsEnum;
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#endif
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}
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internal static MethodInfo GetGetMethod(PropertyInfo property, bool nonPublic, bool allowInternal)
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{
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if (property == null) return null;
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#if COREFX || PROFILE259
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MethodInfo method = property.GetMethod;
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if (!nonPublic && method != null && !method.IsPublic) method = null;
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return method;
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#else
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MethodInfo method = property.GetGetMethod(nonPublic);
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if (method == null && !nonPublic && allowInternal)
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{ // could be "internal" or "protected internal"; look for a non-public, then back-check
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method = property.GetGetMethod(true);
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if (method == null && !(method.IsAssembly || method.IsFamilyOrAssembly))
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{
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method = null;
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}
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}
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return method;
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#endif
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}
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internal static MethodInfo GetSetMethod(PropertyInfo property, bool nonPublic, bool allowInternal)
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{
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if (property == null) return null;
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#if COREFX || PROFILE259
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MethodInfo method = property.SetMethod;
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if (!nonPublic && method != null && !method.IsPublic) method = null;
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return method;
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#else
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MethodInfo method = property.GetSetMethod(nonPublic);
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if (method == null && !nonPublic && allowInternal)
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{ // could be "internal" or "protected internal"; look for a non-public, then back-check
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method = property.GetGetMethod(true);
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if (method == null && !(method.IsAssembly || method.IsFamilyOrAssembly))
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{
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method = null;
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}
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}
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return method;
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#endif
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}
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#if COREFX || PORTABLE || PROFILE259
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private static bool IsMatch(ParameterInfo[] parameters, Type[] parameterTypes)
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{
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if (parameterTypes == null) parameterTypes = EmptyTypes;
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if (parameters.Length != parameterTypes.Length) return false;
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for (int i = 0; i < parameters.Length; i++)
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{
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if (parameters[i].ParameterType != parameterTypes[i]) return false;
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}
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return true;
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}
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#endif
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#if COREFX || PROFILE259
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internal static ConstructorInfo GetConstructor(Type type, Type[] parameterTypes, bool nonPublic)
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{
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return GetConstructor(type.GetTypeInfo(), parameterTypes, nonPublic);
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}
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internal static ConstructorInfo GetConstructor(TypeInfo type, Type[] parameterTypes, bool nonPublic)
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{
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return GetConstructors(type, nonPublic).SingleOrDefault(ctor => IsMatch(ctor.GetParameters(), parameterTypes));
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}
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internal static ConstructorInfo[] GetConstructors(TypeInfo typeInfo, bool nonPublic)
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{
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return typeInfo.DeclaredConstructors.Where(c => !c.IsStatic && ((!nonPublic && c.IsPublic) || nonPublic)).ToArray();
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}
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internal static PropertyInfo GetProperty(Type type, string name, bool nonPublic)
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{
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return GetProperty(type.GetTypeInfo(), name, nonPublic);
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}
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internal static PropertyInfo GetProperty(TypeInfo type, string name, bool nonPublic)
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{
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return type.GetDeclaredProperty(name);
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}
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#else
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internal static ConstructorInfo GetConstructor(Type type, Type[] parameterTypes, bool nonPublic)
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{
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#if PORTABLE || COREFX
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// pretty sure this will only ever return public, but...
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ConstructorInfo ctor = type.GetConstructor(parameterTypes);
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return (ctor != null && (nonPublic || ctor.IsPublic)) ? ctor : null;
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#else
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return type.GetConstructor(
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nonPublic ? BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic
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: BindingFlags.Instance | BindingFlags.Public,
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null, parameterTypes, null);
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#endif
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}
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internal static ConstructorInfo[] GetConstructors(Type type, bool nonPublic)
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{
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return type.GetConstructors(
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nonPublic ? BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic
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: BindingFlags.Instance | BindingFlags.Public);
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}
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internal static PropertyInfo GetProperty(Type type, string name, bool nonPublic)
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{
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return type.GetProperty(name,
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nonPublic ? BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic
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: BindingFlags.Instance | BindingFlags.Public);
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}
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#endif
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internal static object ParseEnum(Type type, string value)
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{
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return Enum.Parse(type, value, true);
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}
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internal static MemberInfo[] GetInstanceFieldsAndProperties(Type type, bool publicOnly)
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{
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#if PROFILE259
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var members = new List<MemberInfo>();
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foreach (FieldInfo field in type.GetRuntimeFields())
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{
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if (field.IsStatic) continue;
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if (field.IsPublic || !publicOnly) members.Add(field);
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}
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foreach (PropertyInfo prop in type.GetRuntimeProperties())
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{
|
|
MethodInfo getter = Helpers.GetGetMethod(prop, true, true);
|
|
if (getter == null || getter.IsStatic) continue;
|
|
if (getter.IsPublic || !publicOnly) members.Add(prop);
|
|
}
|
|
return members.ToArray();
|
|
#else
|
|
BindingFlags flags = publicOnly ? BindingFlags.Public | BindingFlags.Instance : BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic;
|
|
PropertyInfo[] props = type.GetProperties(flags);
|
|
FieldInfo[] fields = type.GetFields(flags);
|
|
MemberInfo[] members = new MemberInfo[fields.Length + props.Length];
|
|
props.CopyTo(members, 0);
|
|
fields.CopyTo(members, props.Length);
|
|
return members;
|
|
#endif
|
|
}
|
|
|
|
internal static Type GetMemberType(MemberInfo member)
|
|
{
|
|
#if PORTABLE || COREFX || PROFILE259
|
|
if (member is PropertyInfo prop) return prop.PropertyType;
|
|
FieldInfo fld = member as FieldInfo;
|
|
return fld?.FieldType;
|
|
#else
|
|
switch (member.MemberType)
|
|
{
|
|
case MemberTypes.Field: return ((FieldInfo)member).FieldType;
|
|
case MemberTypes.Property: return ((PropertyInfo)member).PropertyType;
|
|
default: return null;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
internal static bool IsAssignableFrom(Type target, Type type)
|
|
{
|
|
#if PROFILE259
|
|
return target.GetTypeInfo().IsAssignableFrom(type.GetTypeInfo());
|
|
#else
|
|
return target.IsAssignableFrom(type);
|
|
#endif
|
|
}
|
|
internal static Assembly GetAssembly(Type type)
|
|
{
|
|
#if COREFX || PROFILE259
|
|
return type.GetTypeInfo().Assembly;
|
|
#else
|
|
return type.Assembly;
|
|
#endif
|
|
}
|
|
internal static byte[] GetBuffer(MemoryStream ms)
|
|
{
|
|
#if COREFX
|
|
if(!ms.TryGetBuffer(out var segment))
|
|
{
|
|
throw new InvalidOperationException("Unable to obtain underlying MemoryStream buffer");
|
|
} else if(segment.Offset != 0)
|
|
{
|
|
throw new InvalidOperationException("Underlying MemoryStream buffer was not zero-offset");
|
|
} else
|
|
{
|
|
return segment.Array;
|
|
}
|
|
#elif PORTABLE || PROFILE259
|
|
return ms.ToArray();
|
|
#else
|
|
return ms.GetBuffer();
|
|
#endif
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// Intended to be a direct map to regular TypeCode, but:
|
|
/// - with missing types
|
|
/// - existing on WinRT
|
|
/// </summary>
|
|
internal enum ProtoTypeCode
|
|
{
|
|
Empty = 0,
|
|
Unknown = 1, // maps to TypeCode.Object
|
|
Boolean = 3,
|
|
Char = 4,
|
|
SByte = 5,
|
|
Byte = 6,
|
|
Int16 = 7,
|
|
UInt16 = 8,
|
|
Int32 = 9,
|
|
UInt32 = 10,
|
|
Int64 = 11,
|
|
UInt64 = 12,
|
|
Single = 13,
|
|
Double = 14,
|
|
Decimal = 15,
|
|
DateTime = 16,
|
|
String = 18,
|
|
|
|
// additions
|
|
TimeSpan = 100,
|
|
ByteArray = 101,
|
|
Guid = 102,
|
|
Uri = 103,
|
|
Type = 104
|
|
}
|
|
}
|