Some cosmetic changes; all methods in the StringBuilderHelper are now extension methods; added GarbagePolicy enumeration for StringBuilder helper methods; custom Semaphore is not internal in Windows builds to avoid ambiguous symbols
git-svn-id: file:///srv/devel/repo-conversion/nusu@263 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald
parent
1a05bf9d63
commit
07a9de6283
218
Documents/DoubleConverter.txt
Normal file
218
Documents/DoubleConverter.txt
Normal file
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@ -0,0 +1,218 @@
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From http://www.yoda.arachsys.com/csharp/DoubleConverter.cs
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using System;
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using System.Globalization;
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/// <summary>
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/// A class to allow the conversion of doubles to string representations of
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/// their exact decimal values. The implementation aims for readability over
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/// efficiency.
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/// </summary>
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public class DoubleConverter
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{
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/// <summary>
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/// Converts the given double to a string representation of its
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/// exact decimal value.
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/// </summary>
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/// <param name="d">The double to convert.</param>
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/// <returns>A string representation of the double's exact decimal value.</return>
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public static string ToExactString (double d)
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{
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if (double.IsPositiveInfinity(d))
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return "+Infinity";
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if (double.IsNegativeInfinity(d))
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return "-Infinity";
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if (double.IsNaN(d))
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return "NaN";
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// Translate the double into sign, exponent and mantissa.
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long bits = BitConverter.DoubleToInt64Bits(d);
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// Note that the shift is sign-extended, hence the test against -1 not 1
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bool negative = (bits < 0);
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int exponent = (int) ((bits >> 52) & 0x7ffL);
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long mantissa = bits & 0xfffffffffffffL;
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// Subnormal numbers; exponent is effectively one higher,
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// but there's no extra normalisation bit in the mantissa
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if (exponent==0)
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{
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exponent++;
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}
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// Normal numbers; leave exponent as it is but add extra
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// bit to the front of the mantissa
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else
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{
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mantissa = mantissa | (1L<<52);
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}
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// Bias the exponent. It's actually biased by 1023, but we're
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// treating the mantissa as m.0 rather than 0.m, so we need
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// to subtract another 52 from it.
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exponent -= 1075;
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if (mantissa == 0)
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{
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return "0";
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}
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/* Normalize */
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while((mantissa & 1) == 0)
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{ /* i.e., Mantissa is even */
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mantissa >>= 1;
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exponent++;
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}
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/// Construct a new decimal expansion with the mantissa
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ArbitraryDecimal ad = new ArbitraryDecimal (mantissa);
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// If the exponent is less than 0, we need to repeatedly
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// divide by 2 - which is the equivalent of multiplying
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// by 5 and dividing by 10.
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if (exponent < 0)
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{
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for (int i=0; i < -exponent; i++)
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ad.MultiplyBy(5);
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ad.Shift(-exponent);
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}
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// Otherwise, we need to repeatedly multiply by 2
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else
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{
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for (int i=0; i < exponent; i++)
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ad.MultiplyBy(2);
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}
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// Finally, return the string with an appropriate sign
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if (negative)
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return "-"+ad.ToString();
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else
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return ad.ToString();
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}
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/// <summary>Private class used for manipulating
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class ArbitraryDecimal
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{
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/// <summary>Digits in the decimal expansion, one byte per digit
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byte[] digits;
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/// <summary>
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/// How many digits are *after* the decimal point
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/// </summary>
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int decimalPoint=0;
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/// <summary>
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/// Constructs an arbitrary decimal expansion from the given long.
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/// The long must not be negative.
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/// </summary>
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internal ArbitraryDecimal (long x)
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{
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string tmp = x.ToString(CultureInfo.InvariantCulture);
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digits = new byte[tmp.Length];
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for (int i=0; i < tmp.Length; i++)
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digits[i] = (byte) (tmp[i]-'0');
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Normalize();
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}
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/// <summary>
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/// Multiplies the current expansion by the given amount, which should
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/// only be 2 or 5.
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/// </summary>
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internal void MultiplyBy(int amount)
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{
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byte[] result = new byte[digits.Length+1];
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for (int i=digits.Length-1; i >= 0; i--)
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{
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int resultDigit = digits[i]*amount+result[i+1];
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result[i]=(byte)(resultDigit/10);
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result[i+1]=(byte)(resultDigit%10);
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}
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if (result[0] != 0)
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{
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digits=result;
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}
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else
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{
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Array.Copy (result, 1, digits, 0, digits.Length);
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}
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Normalize();
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}
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/// <summary>
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/// Shifts the decimal point; a negative value makes
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/// the decimal expansion bigger (as fewer digits come after the
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/// decimal place) and a positive value makes the decimal
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/// expansion smaller.
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/// </summary>
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internal void Shift (int amount)
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{
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decimalPoint += amount;
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}
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/// <summary>
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/// Removes leading/trailing zeroes from the expansion.
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/// </summary>
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internal void Normalize()
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{
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int first;
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for (first=0; first < digits.Length; first++)
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if (digits[first]!=0)
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break;
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int last;
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for (last=digits.Length-1; last >= 0; last--)
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if (digits[last]!=0)
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break;
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if (first==0 && last==digits.Length-1)
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return;
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byte[] tmp = new byte[last-first+1];
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for (int i=0; i < tmp.Length; i++)
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tmp[i]=digits[i+first];
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decimalPoint -= digits.Length-(last+1);
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digits=tmp;
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}
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/// <summary>
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/// Converts the value to a proper decimal string representation.
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/// </summary>
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public override String ToString()
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{
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char[] digitString = new char[digits.Length];
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for (int i=0; i < digits.Length; i++)
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digitString[i] = (char)(digits[i]+'0');
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// Simplest case - nothing after the decimal point,
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// and last real digit is non-zero, eg value=35
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if (decimalPoint==0)
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{
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return new string (digitString);
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}
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// Fairly simple case - nothing after the decimal
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// point, but some 0s to add, eg value=350
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if (decimalPoint < 0)
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{
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return new string (digitString)+
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new string ('0', -decimalPoint);
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}
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// Nothing before the decimal point, eg 0.035
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if (decimalPoint >= digitString.Length)
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{
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return "0."+
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new string ('0',(decimalPoint-digitString.Length))+
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new string (digitString);
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}
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// Most complicated case - part of the string comes
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// before the decimal point, part comes after it,
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// eg 3.5
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return new string (digitString, 0,
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digitString.Length-decimalPoint)+
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"."+
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new string (digitString,
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digitString.Length-decimalPoint,
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decimalPoint);
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}
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}
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}
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@ -197,6 +197,7 @@
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<Compile Include="Source\Collections\WeakCollection.Test.cs">
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<DependentUpon>WeakCollection.cs</DependentUpon>
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</Compile>
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<Compile Include="Source\GarbagePolicy.cs" />
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<Compile Include="Source\IO\PartialStream.cs" />
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<Compile Include="Source\IO\PartialStream.Test.cs">
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<DependentUpon>PartialStream.cs</DependentUpon>
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@ -335,6 +336,7 @@
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</ItemGroup>
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<ItemGroup>
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<Content Include="Documents\CommandLine.txt" />
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<Content Include="Documents\DoubleConverter.txt" />
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<Content Include="Documents\Nuclex.Support.txt" />
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<Content Include="Documents\Request Framework.txt" />
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</ItemGroup>
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@ -228,6 +228,7 @@
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<Compile Include="Source\Collections\WeakCollection.Test.cs">
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<DependentUpon>WeakCollection.cs</DependentUpon>
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</Compile>
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<Compile Include="Source\GarbagePolicy.cs" />
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<Compile Include="Source\IO\PartialStream.cs" />
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<Compile Include="Source\IO\PartialStream.Test.cs">
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<DependentUpon>PartialStream.cs</DependentUpon>
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@ -366,6 +367,7 @@
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</ItemGroup>
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<ItemGroup>
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<Content Include="Documents\CommandLine.txt" />
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<Content Include="Documents\DoubleConverter.txt" />
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<Content Include="Documents\Nuclex.Support.txt" />
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<Content Include="Documents\Request Framework.txt" />
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</ItemGroup>
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@ -239,6 +239,7 @@
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<Compile Include="Source\Collections\WeakCollection.Test.cs">
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<DependentUpon>WeakCollection.cs</DependentUpon>
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</Compile>
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<Compile Include="Source\GarbagePolicy.cs" />
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<Compile Include="Source\IO\PartialStream.cs" />
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<Compile Include="Source\IO\PartialStream.Test.cs">
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<DependentUpon>PartialStream.cs</DependentUpon>
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@ -377,6 +378,7 @@
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</ItemGroup>
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<ItemGroup>
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<Content Include="Documents\CommandLine.txt" />
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<Content Include="Documents\DoubleConverter.txt" />
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<Content Include="Documents\Nuclex.Support.txt" />
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<Content Include="Documents\Request Framework.txt" />
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</ItemGroup>
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@ -194,6 +194,35 @@ namespace Nuclex.Support.Collections {
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Assert.IsFalse(set2.IsSubsetOf(set1));
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}
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/// <summary>
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/// Verifies that a set can determine if another set overlaps with it
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/// </summary>
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[Test]
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public void CanDetermineOverlap() {
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var set1 = new ObservableSet<int>() { 1, 3, 5 };
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var set2 = new ObservableSet<int>() { 3 };
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Assert.IsTrue(set1.Overlaps(set2));
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Assert.IsTrue(set2.Overlaps(set1));
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}
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/// <summary>
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/// Verifies that a set can determine if another set contains the same elements
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/// </summary>
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[Test]
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public void CanDetermineSetEquality() {
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var set1 = new ObservableSet<int>() { 1, 3, 5 };
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var set2 = new ObservableSet<int>() { 3, 1, 5 };
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Assert.IsTrue(set1.SetEquals(set2));
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Assert.IsTrue(set2.SetEquals(set1));
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set1.Add(7);
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Assert.IsFalse(set1.SetEquals(set2));
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Assert.IsFalse(set2.SetEquals(set1));
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}
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/// <summary>Creates mock object for the test</summary>
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private MockFactory mockFactory;
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/// <summary>Observable set being tested</summary>
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@ -29,22 +29,22 @@ namespace Nuclex.Support {
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public static class EnumHelper {
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/// <summary>Returns the highest value encountered in an enumeration</summary>
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/// <typeparam name="EnumType">
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/// <typeparam name="TEnum">
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/// Enumeration of which the highest value will be returned
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/// </typeparam>
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/// <returns>The highest value in the enumeration</returns>
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public static EnumType GetHighestValue<EnumType>() where EnumType : IComparable {
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EnumType[] values = GetValues<EnumType>();
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public static TEnum GetHighestValue<TEnum>() where TEnum : IComparable {
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TEnum[] values = GetValues<TEnum>();
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// If the enumeration is empty, return nothing
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if(values.Length == 0) {
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return default(EnumType);
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return default(TEnum);
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}
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// Look for the highest value in the enumeration. We initialize the highest value
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// to the first enumeration value so we don't have to use some arbitrary starting
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// value which might actually appear in the enumeration.
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EnumType highestValue = values[0];
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TEnum highestValue = values[0];
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for(int index = 1; index < values.Length; ++index) {
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if(values[index].CompareTo(highestValue) > 0) {
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highestValue = values[index];
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@ -81,7 +81,7 @@ namespace Nuclex.Support {
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}
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/// <summary>Retrieves a list of all values contained in an enumeration</summary>
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/// <typeparam name="EnumType">
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/// <typeparam name="TEnum">
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/// Type of the enumeration whose values will be returned
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/// </typeparam>
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/// <returns>All values contained in the specified enumeration</returns>
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@ -89,21 +89,21 @@ namespace Nuclex.Support {
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/// This method produces collectable garbage so it's best to only call it once
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/// and cache the result.
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/// </remarks>
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public static EnumType[] GetValues<EnumType>() {
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public static TEnum[] GetValues<TEnum>() {
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#if XBOX360 || WINDOWS_PHONE
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return GetValuesXbox360<EnumType>();
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return GetValuesXbox360<TEnum>();
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#else
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return (EnumType[])Enum.GetValues(typeof(EnumType));
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return (TEnum[])Enum.GetValues(typeof(TEnum));
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#endif
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}
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/// <summary>Retrieves a list of all values contained in an enumeration</summary>
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/// <typeparam name="EnumType">
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/// <typeparam name="TEnum">
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/// Type of the enumeration whose values will be returned
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/// </typeparam>
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/// <returns>All values contained in the specified enumeration</returns>
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internal static EnumType[] GetValuesXbox360<EnumType>() {
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Type enumType = typeof(EnumType);
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internal static TEnum[] GetValuesXbox360<TEnum>() {
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Type enumType = typeof(TEnum);
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if(!enumType.IsEnum) {
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throw new ArgumentException(
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"The provided type needs to be an enumeration", "EnumType"
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@ -117,9 +117,9 @@ namespace Nuclex.Support {
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// Create an array to hold the enumeration values and copy them over from
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// the fields we just retrieved
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EnumType[] values = new EnumType[fieldInfos.Length];
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TEnum[] values = new TEnum[fieldInfos.Length];
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for(int index = 0; index < fieldInfos.Length; ++index) {
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values[index] = (EnumType)fieldInfos[index].GetValue(null);
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values[index] = (TEnum)fieldInfos[index].GetValue(null);
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}
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return values;
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|
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33
Source/GarbagePolicy.cs
Normal file
33
Source/GarbagePolicy.cs
Normal file
|
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@ -0,0 +1,33 @@
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#region CPL License
|
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/*
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Nuclex Framework
|
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Copyright (C) 2002-2012 Nuclex Development Labs
|
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|
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This library is free software; you can redistribute it and/or
|
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modify it under the terms of the IBM Common Public License as
|
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published by the IBM Corporation; either version 1.0 of the
|
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License, or (at your option) any later version.
|
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|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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IBM Common Public License for more details.
|
||||
|
||||
You should have received a copy of the IBM Common Public
|
||||
License along with this library
|
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*/
|
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#endregion
|
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|
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using System;
|
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|
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namespace Nuclex.Support {
|
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|
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/// <summary>How to behave in in respect to the garbage collector</summary>
|
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public enum GarbagePolicy {
|
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/// <summary>Avoid feeding the garbage collector whenever possible</summary>
|
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Avoid,
|
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/// <summary>Accept garbage production</summary>
|
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Accept
|
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}
|
||||
|
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} // namespace Nuclex.Support
|
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|
|
@ -175,9 +175,6 @@ namespace Nuclex.Support {
|
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/// <summary>
|
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/// Determines whether the property change affects the specified property
|
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/// </summary>
|
||||
/// <typeparam name="TValue">
|
||||
/// Type of the property that will be tested for being affected
|
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/// </typeparam>
|
||||
/// <param name="arguments">
|
||||
/// Property change that has been reported by the observed object
|
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/// </param>
|
||||
|
|
|
|||
|
|
@ -56,10 +56,12 @@ namespace Nuclex.Support {
|
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/// become eligible for execution.
|
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/// </para>
|
||||
/// </remarks>
|
||||
#if !(XBOX360 || WINDOWS_PHONE)
|
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#if WINDOWS
|
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[Obsolete("Prefer the normal semaphore on Windows builds.")]
|
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#endif
|
||||
internal class Semaphore : WaitHandle {
|
||||
#else
|
||||
public class Semaphore : WaitHandle {
|
||||
#endif
|
||||
|
||||
/// <summary>Initializes a new semaphore</summary>
|
||||
public Semaphore() {
|
||||
|
|
|
|||
|
|
@ -24,13 +24,13 @@ using System.Diagnostics;
|
|||
namespace Nuclex.Support {
|
||||
|
||||
/// <summary>Manages a globally shared instance of the given Type</summary>
|
||||
/// <typeparam name="SharedType">
|
||||
/// <typeparam name="TShared">
|
||||
/// Type of which a globally shared instance will be provided
|
||||
/// </typeparam>
|
||||
public static class Shared<SharedType> where SharedType : new() {
|
||||
public static class Shared<TShared> where TShared : new() {
|
||||
|
||||
/// <summary>Returns the global instance of the class</summary>
|
||||
public static SharedType Instance {
|
||||
public static TShared Instance {
|
||||
[DebuggerStepThrough]
|
||||
get {
|
||||
return instance;
|
||||
|
|
@ -38,7 +38,7 @@ namespace Nuclex.Support {
|
|||
}
|
||||
|
||||
/// <summary>Stored the globally shared instance</summary>
|
||||
private static readonly SharedType instance = new SharedType();
|
||||
private static readonly TShared instance = new TShared();
|
||||
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -40,8 +40,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendByte() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, (byte)255);
|
||||
|
||||
builder.Append((byte)255, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("255", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append((byte)255, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("255", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -51,8 +56,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNullByte() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, (byte)0);
|
||||
|
||||
builder.Append((byte)0, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("0", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append((byte)0, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("0", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -62,8 +72,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendPositiveInteger() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 12345);
|
||||
|
||||
builder.Append(12345, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("12345", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(12345, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("12345", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -73,8 +88,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNullInteger() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 0);
|
||||
|
||||
builder.Append(0, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("0", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(0, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("0", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -84,8 +104,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNegativeInteger() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, -12345);
|
||||
|
||||
builder.Append(-12345, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("-12345", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(-12345, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("-12345", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -95,8 +120,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendPositiveLong() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 12345L);
|
||||
|
||||
builder.Append(12345L, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("12345", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(12345L, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("12345", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -106,8 +136,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNullLong() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 0L);
|
||||
|
||||
builder.Append(0L, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("0", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(0L, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("0", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -117,8 +152,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNegativeLong() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, -12345L);
|
||||
|
||||
builder.Append(-12345L, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("-12345", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(-12345L, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("-12345", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -128,9 +168,14 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNegativeFloat() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, -32.015625f);
|
||||
|
||||
Assert.AreEqual("-32.015625", builder.ToString());
|
||||
builder.Append(-0.125f, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("-0.125", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(-0.125f, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("-0.125", builder.ToString());
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -139,8 +184,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendPositiveFloat() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 10.0625f);
|
||||
|
||||
builder.Append(10.0625f, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("10.0625", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(10.0625f, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("10.0625", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -150,8 +200,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendSmallFloat() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 0.00390625f);
|
||||
|
||||
builder.Append(0.00390625f, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("0.00390625", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(0.00390625f, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("0.00390625", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -161,17 +216,21 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendHugeFloat() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 1000000000.0f);
|
||||
|
||||
builder.Append(1000000000.0f, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("1000000000.0", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(1000000000.0f, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("1E+09", builder.ToString());
|
||||
}
|
||||
|
||||
/// <summary>Tests whether the number of decimal places can be restricted</summary>
|
||||
[Test]
|
||||
public void TestAppendFloatLimitDecimalPlaces() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 0.00390625f, 3);
|
||||
|
||||
builder.Append(0.00390625f, 3);
|
||||
Assert.AreEqual("0.003", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -181,8 +240,7 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendFloatWithoutDecimalPlaces() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 0.00390625f, 0);
|
||||
|
||||
builder.Append(0.00390625f, 0);
|
||||
Assert.AreEqual("0", builder.ToString()); // Note: no rounding!
|
||||
}
|
||||
|
||||
|
|
@ -192,10 +250,10 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendOutOfRangeFloat() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, float.PositiveInfinity));
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, float.NegativeInfinity));
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, float.NaN));
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, 0.000000059604644775390625f));
|
||||
Assert.IsFalse(builder.Append(float.PositiveInfinity, GarbagePolicy.Avoid));
|
||||
Assert.IsFalse(builder.Append(float.NegativeInfinity, GarbagePolicy.Avoid));
|
||||
Assert.IsFalse(builder.Append(float.NaN, GarbagePolicy.Avoid));
|
||||
Assert.IsFalse(builder.Append(0.000000059604644775390625f, GarbagePolicy.Avoid));
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -205,8 +263,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendNegativeDouble() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, -32.015625);
|
||||
|
||||
builder.Append(-32.015625, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("-32.015625", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(-32.015625, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("-32.015625", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -217,8 +280,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendPositiveDouble() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 10.0625);
|
||||
|
||||
builder.Append(10.0625, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("10.0625", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(10.0625, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("10.0625", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -229,8 +297,13 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendSmallDouble() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 0.00390625);
|
||||
|
||||
builder.Append(0.00390625, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("0.00390625", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(0.00390625, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("0.00390625", builder.ToString());
|
||||
}
|
||||
|
||||
|
|
@ -241,9 +314,14 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendHugeDouble() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
StringBuilderHelper.Append(builder, 1000000000000000000.0);
|
||||
|
||||
builder.Append(1000000000000000000.0, GarbagePolicy.Avoid);
|
||||
Assert.AreEqual("1000000000000000000.0", builder.ToString());
|
||||
|
||||
builder.Clear();
|
||||
|
||||
builder.Append(1000000000000000000.0, GarbagePolicy.Accept);
|
||||
Assert.AreEqual("1E+18", builder.ToString());
|
||||
}
|
||||
|
||||
/// <summary>Tests whether the number of decimal places can be restricted</summary>
|
||||
|
|
@ -273,12 +351,10 @@ namespace Nuclex.Support {
|
|||
[Test]
|
||||
public void TestAppendOutOfRangeDouble() {
|
||||
StringBuilder builder = new StringBuilder();
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, double.PositiveInfinity));
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, double.NegativeInfinity));
|
||||
Assert.IsFalse(StringBuilderHelper.Append(builder, double.NaN));
|
||||
Assert.IsFalse(
|
||||
StringBuilderHelper.Append(builder, 1.1102230246251565404236316680908e-16)
|
||||
);
|
||||
Assert.IsFalse(builder.Append(double.PositiveInfinity, GarbagePolicy.Avoid));
|
||||
Assert.IsFalse(builder.Append(double.NegativeInfinity, GarbagePolicy.Avoid));
|
||||
Assert.IsFalse(builder.Append(double.NaN, GarbagePolicy.Avoid));
|
||||
Assert.IsFalse(builder.Append(1.1102230246251565404236316680908e-16, GarbagePolicy.Avoid));
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
|
|||
|
|
@ -25,12 +25,6 @@ using System.Text;
|
|||
|
||||
namespace Nuclex.Support {
|
||||
|
||||
/*
|
||||
public enum Garbage {
|
||||
Avoid,
|
||||
Accept
|
||||
}
|
||||
*/
|
||||
/// <summary>Contains helper methods for the string builder class</summary>
|
||||
public static class StringBuilderHelper {
|
||||
|
||||
|
|
@ -50,13 +44,20 @@ namespace Nuclex.Support {
|
|||
/// </summary>
|
||||
/// <param name="builder">String builder to which an integer will be appended</param>
|
||||
/// <param name="value">Byte that will be appended to the string builder</param>
|
||||
/// <param name="garbagePolicy">How to behave regarding the garbage collector</param>
|
||||
/// <remarks>
|
||||
/// The normal StringBuilder.Append() method generates garbage when converting
|
||||
/// integer arguments whereas this method will avoid any garbage, albeit probably
|
||||
/// with a small performance impact compared to the built-in method.
|
||||
/// </remarks>
|
||||
public static void Append(StringBuilder builder, byte value) {
|
||||
public static void Append(
|
||||
this StringBuilder builder, byte value, GarbagePolicy garbagePolicy
|
||||
) {
|
||||
if(garbagePolicy == GarbagePolicy.Avoid) {
|
||||
recursiveAppend(builder, value);
|
||||
} else {
|
||||
builder.Append((int)value);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -64,18 +65,25 @@ namespace Nuclex.Support {
|
|||
/// </summary>
|
||||
/// <param name="builder">String builder to which an integer will be appended</param>
|
||||
/// <param name="value">Integer that will be appended to the string builder</param>
|
||||
/// <param name="garbagePolicy">How to behave regarding the garbage collector</param>
|
||||
/// <remarks>
|
||||
/// The normal StringBuilder.Append() method generates garbage when converting
|
||||
/// integer arguments whereas this method will avoid any garbage, albeit probably
|
||||
/// with a small performance impact compared to the built-in method.
|
||||
/// </remarks>
|
||||
public static void Append(StringBuilder builder, int value) {
|
||||
public static void Append(
|
||||
this StringBuilder builder, int value, GarbagePolicy garbagePolicy
|
||||
) {
|
||||
if(garbagePolicy == GarbagePolicy.Avoid) {
|
||||
if(value < 0) {
|
||||
builder.Append('-');
|
||||
recursiveAppend(builder, -value);
|
||||
} else {
|
||||
recursiveAppend(builder, value);
|
||||
}
|
||||
} else {
|
||||
builder.Append(value);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -83,18 +91,25 @@ namespace Nuclex.Support {
|
|||
/// </summary>
|
||||
/// <param name="builder">String builder to which an integer will be appended</param>
|
||||
/// <param name="value">Long integer that will be appended to the string builder</param>
|
||||
/// <param name="garbagePolicy">How to behave regarding the garbage collector</param>
|
||||
/// <remarks>
|
||||
/// The normal StringBuilder.Append() method generates garbage when converting
|
||||
/// integer arguments whereas this method will avoid any garbage, albeit probably
|
||||
/// with a small performance impact compared to the built-in method.
|
||||
/// </remarks>
|
||||
public static void Append(StringBuilder builder, long value) {
|
||||
public static void Append(
|
||||
this StringBuilder builder, long value, GarbagePolicy garbagePolicy
|
||||
) {
|
||||
if(garbagePolicy == GarbagePolicy.Avoid) {
|
||||
if(value < 0) {
|
||||
builder.Append('-');
|
||||
recursiveAppend(builder, -value);
|
||||
} else {
|
||||
recursiveAppend(builder, value);
|
||||
}
|
||||
} else {
|
||||
builder.Append(value);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -102,14 +117,22 @@ namespace Nuclex.Support {
|
|||
/// </summary>
|
||||
/// <param name="builder">String builder the value will be appended to</param>
|
||||
/// <param name="value">Value that will be appended to the string builder</param>
|
||||
/// <param name="garbagePolicy">How to behave regarding the garbage collector</param>
|
||||
/// <returns>Whether the value was inside the algorithm's supported range</returns>
|
||||
/// <remarks>
|
||||
/// Uses an algorithm that covers the sane range of possible values but will
|
||||
/// fail to render extreme values, NaNs and infinity. In these cases, false
|
||||
/// is returned and the traditional double.ToString() method can be used.
|
||||
/// </remarks>
|
||||
public static bool Append(StringBuilder builder, float value) {
|
||||
public static bool Append(
|
||||
this StringBuilder builder, float value, GarbagePolicy garbagePolicy
|
||||
) {
|
||||
if(garbagePolicy == GarbagePolicy.Avoid) {
|
||||
return Append(builder, value, int.MaxValue);
|
||||
} else {
|
||||
builder.Append(value);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -124,7 +147,7 @@ namespace Nuclex.Support {
|
|||
/// fail to render extreme values, NaNs and infinity. In these cases, false
|
||||
/// is returned and the traditional double.ToString() method can be used.
|
||||
/// </remarks>
|
||||
public static bool Append(StringBuilder builder, float value, int decimalPlaces) {
|
||||
public static bool Append(this StringBuilder builder, float value, int decimalPlaces) {
|
||||
const int ExponentBits = 0xFF; // Bit mask for the exponent bits
|
||||
const int FractionalBitCount = 23; // Number of bits for fractional part
|
||||
const int ExponentBias = 127; // Bias subtraced from exponent
|
||||
|
|
@ -201,14 +224,22 @@ namespace Nuclex.Support {
|
|||
/// </summary>
|
||||
/// <param name="builder">String builder the value will be appended to</param>
|
||||
/// <param name="value">Value that will be appended to the string builder</param>
|
||||
/// <param name="garbagePolicy">How to behave regarding the garbage collector</param>
|
||||
/// <returns>Whether the value was inside the algorithm's supported range</returns>
|
||||
/// <remarks>
|
||||
/// Uses an algorithm that covers the sane range of possible values but will
|
||||
/// fail to render extreme values, NaNs and infinity. In these cases, false
|
||||
/// is returned and the traditional double.ToString() method can be used.
|
||||
/// </remarks>
|
||||
public static bool Append(StringBuilder builder, double value) {
|
||||
public static bool Append(
|
||||
this StringBuilder builder, double value, GarbagePolicy garbagePolicy
|
||||
) {
|
||||
if(garbagePolicy == GarbagePolicy.Avoid) {
|
||||
return Append(builder, value, int.MaxValue);
|
||||
} else {
|
||||
builder.Append(value);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
|
@ -224,7 +255,7 @@ namespace Nuclex.Support {
|
|||
/// fail to render extreme values, NaNs and infinity. In these cases, false
|
||||
/// is returned and the traditional double.ToString() method can be used.
|
||||
/// </remarks>
|
||||
public static bool Append(StringBuilder builder, double value, int decimalPlaces) {
|
||||
public static bool Append(this StringBuilder builder, double value, int decimalPlaces) {
|
||||
const long ExponentBits = 0x7FF; // Bit mask for the exponent bits
|
||||
const int FractionalBitCount = 52; // Number of bits for fractional part
|
||||
const int ExponentBias = 1023; // Bias subtraced from exponent
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user