public void TryParseTest()
{
Assert.IsTrue(Relative.TryParse("50%", out float value, out bool relative));
Assert.IsTrue(relative);
Assert.AreEqual(0.5f, value);
}
public static bool TryParse(string input, out Sides sides)
{
// If the given string is empty, return with an empty padding.
if (string.IsNullOrWhiteSpace(input))
{
sides = new Sides(0, SideMask.None); return(false);
}
// Split the input into sides.
string[] paddingSides = input.Split(',');
// Keep track of what sides should be relative.
SideMask relativeSides = SideMask.None;
// Parse the first value.
if (!Relative.TryParse(paddingSides[0], out float top, out bool topRelative))
{
sides = new Sides(0, SideMask.None); return(false);
}
// If the first value is the only value, return a padding with all sides set to the value.
if (paddingSides.Length == 1)
{
sides = new Sides(top, topRelative ? SideMask.All : SideMask.None); return(true);
}
// Parse the right side.
if (!Relative.TryParse(paddingSides[1], out float right, out bool rightRelative))
{
sides = new Sides(0, SideMask.None); return(false);
}
// If there are 2 given sides, use them for the vertical and horizontal sides.
if (paddingSides.Length == 2)
{
// Set the bitflag based on which sides are relative.
if (rightRelative)
{
relativeSides |= SideMask.Horizontal;
}
if (topRelative)
{
relativeSides |= SideMask.Vertical;
}
// Return a relative padding with the parsed values and sides.
sides = new Sides(right, top, relativeSides);
return(true);
}
// Parse the bottom side.
if (!Relative.TryParse(paddingSides[2], out float bottom, out bool bottomRelative))
{
sides = new Sides(0, SideMask.None); return(false);
}
// If there are 3 given sides, use them for the top, bottom, and horizontal sides.
if (paddingSides.Length == 3)
{
// Set the bitflag based on which sides are relative.
if (rightRelative)
{
relativeSides |= SideMask.Horizontal;
}
if (topRelative)
{
relativeSides |= SideMask.Top;
}
if (bottomRelative)
{
relativeSides |= SideMask.Bottom;
}
// Return a new relative padding with the parsed values and sides.
sides = new Sides(top, right, bottom, relativeSides);
return(true);
}
// Parse the left side.
if (!Relative.TryParse(paddingSides[3], out float left, out bool leftRelative))
{
sides = new Sides(0, SideMask.None); return(false);
}
// Set the bitflag based on which sides are relative.
if (rightRelative)
{
relativeSides |= SideMask.Right;
}
if (leftRelative)
{
relativeSides |= SideMask.Left;
}
if (topRelative)
{
relativeSides |= SideMask.Top;
}
if (bottomRelative)
{
relativeSides |= SideMask.Bottom;
}
// Return a relative padding with all sides set.
sides = new Sides(top, right, bottom, left, relativeSides);
return(true);
}