public void EvaluateFor(ForBlock block, int level = 0)
{
int start = (int)((CssUnitValue)EvalulateExpression(block.Start)).Value;
int end = (int)((CssUnitValue)EvalulateExpression(block.End)).Value;
if (end < start)
{
throw new Exception("end must be after the start");
}
if (end - start > 10000)
{
throw new Exception("Must be less than 10,000");
}
scope = scope.GetChildScope();
int a = 0;
for (int i = start; i <= end; i++)
{
if (a > 0)
{
writer.WriteLine();
}
scope[block.Variable.Symbol] = CssUnitValue.Number(i);
WriteBlockBody(block, level);
a++;
}
scope = scope.Parent !;
}
public Thickness(CssUnitValue top, CssUnitValue left, CssUnitValue bottom, CssUnitValue right)
{
Top = top;
Left = left;
Bottom = bottom;
Right = right;
}
// 60px
// 6.5em
private static bool TryParseNumberOrMeasurement(string text, out CssValue?value)
{
int unitIndex = -1;
char point;
for (int i = 0; i < text.Length; i++)
{
point = text[i];
if (point == ' ' || point == ',')
{
value = null;
return(false);
}
if (char.IsNumber(point) || point == '.')
{
}
else if (unitIndex == -1)
{
unitIndex = i;
}
}
if (unitIndex > 0)
{
value = new CssUnitValue(double.Parse(text.Substring(0, unitIndex), CultureInfo.InvariantCulture), text.Substring(unitIndex));
}
else
{
value = CssValue.Number(double.Parse(text, CultureInfo.InvariantCulture));
}
return(true);
}
public static Thickness Parse(string value)
{
var top = CssUnitValue.Zero;
var left = CssUnitValue.Zero;
var bottom = CssUnitValue.Zero;
var right = CssUnitValue.Zero;
value = value.Trim();
string[] parts = value.Split(Seperators.Space);
for (int i = 0; i < parts.Length; i++)
{
var part = CssUnitValue.Parse(parts[i].AsSpan());
if (parts.Length == 1)
{
top = part;
left = part;
bottom = part;
right = part;
}
else if (parts.Length == 2)
{
// padding: 10px 20px;
// 10px = top & bottom
// 20px = left & right
switch (i)
{
case 0: top = part; bottom = part; break;
case 1: left = part; right = part; break;
}
}
else if (parts.Length == 3)
{
// padding: 10px 3% 20px;
// 10px = top
// 3% = left & right
// 20px = bottom
switch (i)
{
case 0: top = part; break;
case 1: left = part; right = part; break;
case 3: bottom = part; break;
}
}
else
{
switch (i)
{
case 0: top = part; break;
case 1: left = part; break;
case 2: bottom = part; break;
case 3: right = part; break;
}
}
}
return(new Thickness(top, left, bottom, right));
}