DisplayName
using System;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Text;
namespace NUnit.Framework.Internal
{
[System.Runtime.CompilerServices.NullableContext(1)]
[System.Runtime.CompilerServices.Nullable(0)]
internal static class DisplayName
{
private const string THREE_DOTS = "...";
public static string GetValueString([System.Runtime.CompilerServices.Nullable(2)] object arg, int stringMax)
{
string text = (arg == null) ? "null" : Convert.ToString(arg, CultureInfo.InvariantCulture);
Array array = arg as Array;
if (array != null && array.Rank == 1) {
if (array.Length == 0)
text = "[]";
else {
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append('[');
int num = Math.Min(array.Length, 5);
for (int i = 0; i < num; i++) {
if (i > 0)
stringBuilder.Append(", ");
object value = array.GetValue(i);
Array array2 = value as Array;
if (array2 != null && array2.Rank == 1) {
stringBuilder.Append(array2.GetType().GetElementType().Name);
stringBuilder.Append("[]");
} else {
string valueString = GetValueString(value, stringMax);
stringBuilder.Append(valueString);
}
}
if (array.Length > 5)
stringBuilder.Append(", ...");
stringBuilder.Append(']');
text = stringBuilder.ToString();
}
} else if (arg is double) {
double num2 = (double)arg;
if (double.IsNaN(num2))
text = "double.NaN";
else if (double.IsPositiveInfinity(num2)) {
text = "double.PositiveInfinity";
} else if (double.IsNegativeInfinity(num2)) {
text = "double.NegativeInfinity";
} else if (num2 == 1.7976931348623157E+308) {
text = "double.MaxValue";
} else if (num2 == -1.7976931348623157E+308) {
text = "double.MinValue";
} else {
if (text.IndexOf('.') == -1)
text += ".0";
text += "d";
}
} else if (arg is float) {
float num3 = (float)arg;
if (float.IsNaN(num3))
text = "float.NaN";
else if (float.IsPositiveInfinity(num3)) {
text = "float.PositiveInfinity";
} else if (float.IsNegativeInfinity(num3)) {
text = "float.NegativeInfinity";
} else if (num3 == 3.4028235E+38) {
text = "float.MaxValue";
} else if (num3 == -3.4028235E+38) {
text = "float.MinValue";
} else {
if (text.IndexOf('.') == -1)
text += ".0";
text += "f";
}
} else if (arg is decimal) {
decimal d = (decimal)arg;
text = ((d == decimal.MinValue) ? "decimal.MinValue" : ((!(d == decimal.MaxValue)) ? (text + "m") : "decimal.MaxValue"));
} else if (arg is long) {
long num4 = (long)arg;
text = (num4.Equals(-9223372036854775808) ? "long.MinValue" : ((!num4.Equals(9223372036854775807)) ? (text + "L") : "long.MaxValue"));
} else if (arg is ulong) {
switch ((ulong)arg) {
case 0:
text = "ulong.MinValue";
break;
case ulong.MaxValue:
text = "ulong.MaxValue";
break;
default:
text += "UL";
break;
}
} else {
string text2 = arg as string;
if (text2 != null) {
bool flag = stringMax > 0 && text2.Length > stringMax;
int num5 = flag ? (stringMax - "...".Length) : 0;
if (!flag && !MayNeedEscape(text2))
text = "\"" + text2 + "\"";
else {
StringBuilder stringBuilder2 = new StringBuilder();
stringBuilder2.Append('"');
string text3 = text2;
foreach (char c in text3) {
stringBuilder2.Append(EscapeCharInString(c));
if (flag && stringBuilder2.Length > num5) {
stringBuilder2.Append("...");
break;
}
}
stringBuilder2.Append('"');
text = stringBuilder2.ToString();
}
} else if (arg is char) {
char c2 = (char)arg;
text = "'" + EscapeSingleChar(c2) + "'";
} else if (arg is int) {
int num6 = (int)arg;
if (num6.Equals(2147483647))
text = "int.MaxValue";
else if (num6.Equals(-2147483648)) {
text = "int.MinValue";
}
} else if (arg is uint) {
uint num7 = (uint)arg;
if (num7.Equals(uint.MaxValue))
text = "uint.MaxValue";
else if (num7.Equals(0)) {
text = "uint.MinValue";
}
} else if (arg is short) {
short num8 = (short)arg;
if (num8.Equals(short.MaxValue))
text = "short.MaxValue";
else if (num8.Equals(short.MinValue)) {
text = "short.MinValue";
}
} else if (arg is ushort) {
ushort num9 = (ushort)arg;
if (num9.Equals(ushort.MaxValue))
text = "ushort.MaxValue";
else if (num9.Equals(0)) {
text = "ushort.MinValue";
}
} else if (arg is byte) {
byte b = (byte)arg;
if (b.Equals(byte.MaxValue))
text = "byte.MaxValue";
else if (b.Equals(0)) {
text = "byte.MinValue";
}
} else if (arg is sbyte) {
sbyte b2 = (sbyte)arg;
if (b2.Equals(sbyte.MaxValue))
text = "sbyte.MaxValue";
else if (b2.Equals(sbyte.MinValue)) {
text = "sbyte.MinValue";
}
} else {
Exception ex = arg as Exception;
if (ex != null)
text = FormatException(ex);
}
}
return text;
}
private static string FormatException(Exception ex)
{
StringBuilder stringBuilder = new StringBuilder();
for (Exception ex2 = ex; ex2 != null; ex2 = ex2.InnerException) {
stringBuilder.Append(ex2.GetType().Name);
stringBuilder.Append(": ");
stringBuilder.Append(ex2.Message);
if (ex2.InnerException != null)
stringBuilder.Append(", ");
}
return stringBuilder.ToString();
}
private static bool MayNeedEscape(string s)
{
foreach (char c in s) {
if (MayNeedEscape(c))
return true;
}
return false;
}
private static bool MayNeedEscape(char c)
{
if (!char.IsLetterOrDigit(c) && c != '.' && c != '/' && c != '-')
return c != '_';
return false;
}
private static string EscapeSingleChar(char c)
{
if (c == '\'')
return "\\'";
return EscapeControlChar(c);
}
private static string EscapeCharInString(char c)
{
if (c == '"')
return "\\\"";
return EscapeControlChar(c);
}
private static string EscapeControlChar(char c)
{
switch (c) {
case '\\':
return "\\\\";
case ' ':
return "\\0";
case '':
return "\\a";
case '\b':
return "\\b";
case ' ':
return "\\f";
case '\n':
return "\\n";
case '\r':
return "\\r";
case '\t':
return "\\t";
case ' ':
return "\\v";
case '
':
case '
':
case '
':
return $"""{(int)c:""}";
default:
return c.ToString();
}
}
}
}