internal bool TryConstraint(out CompareFlag flag)
{
SkipLeading();
flag = CompareFlag.None;
while (!EOF && IsConstraint(_Current))
{
if (_Current == MINOR)
{
flag = CompareFlag.MinorUplift;
}
else if (_Current == PATCH)
{
flag = CompareFlag.PatchUplift;
}
else if (_Current == EQUAL)
{
flag |= CompareFlag.Equals;
}
else if (_Current == GREATER)
{
flag |= CompareFlag.GreaterThan;
}
else if (_Current == LESS)
{
flag |= CompareFlag.LessThan;
}
Next();
}
return(flag != CompareFlag.None);
}
internal void GetConstraint(out CompareFlag flag)
{
flag = CompareFlag.None;
while (!EOF && IsConstraint(_Current))
{
if (_Current == MINOR)
{
flag = CompareFlag.MinorUplift;
}
else if (_Current == PATCH)
{
flag = CompareFlag.PatchUplift;
}
else if (_Current == EQUAL)
{
flag |= CompareFlag.Equals;
}
else if (_Current == GREATER)
{
flag |= CompareFlag.GreaterThan;
}
else if (_Current == LESS)
{
flag |= CompareFlag.LessThan;
}
Next();
}
}
internal Constraint(int major, int minor, int patch, string prerelease, CompareFlag flag)
{
_Flag = flag == CompareFlag.None ? CompareFlag.Equals : flag;
_Major = major;
_Minor = minor;
_Patch = patch;
_Prerelease = prerelease;
}
/// <summary>
/// 指示指定的值是不是在指定的范围内。
/// </summary>
/// <typeparam name="T">要测试的类型。</typeparam>
/// <param name="value">要测试的值。</param>
/// <param name="minValue">最小值。</param>
/// <param name="maxValue">最大值。</param>
/// <param name="compareFlag">比较标识，默认大于等于和小于等于。</param>
/// <returns></returns>
public static bool IsRange <T>(this T value, T minValue, T maxValue, CompareFlag compareFlag = CompareFlag.GreaterEqualAndLessEqual) where T : struct, IComparable
{
bool result = false;
switch (compareFlag)
{
case CompareFlag.GreaterAndLess:
result = IsGreater(value, minValue) && IsLess(value, maxValue);
break;
case CompareFlag.GreaterEqualAndLessEqual:
result = IsGreaterEqual(value, maxValue) && IsLessEqual(value, maxValue);
break;
case CompareFlag.GreaterAndLessEqual:
result = IsGreater(value, minValue) && IsLessEqual(value, maxValue);
break;
case CompareFlag.GreaterEqualAndLess:
result = IsGreaterEqual(value, maxValue) && IsLess(value, maxValue);
break;
}
return(result);
}