public object Clone()
{
RenderingExpression clone = new RenderingExpression();
foreach (RenderingExpressionItem item in mvarItems)
{
clone.Items.Add(item.Clone() as RenderingExpressionItem);
}
return(clone);
}
public static RenderingExpression Parse(string value)
{
RenderingExpression expr = new RenderingExpression();
bool escaping = false;
StringBuilder sbLiteral = new StringBuilder();
for (int i = 0; i < value.Length; i++)
{
if (IsNumeric(value[i]) || (value[i] == '.' && sbLiteral.Length > 0))
{
sbLiteral.Append(value[i]);
}
else if (value[i] == ' ')
{
continue;
}
else if (value[i] == '-')
{
expr.Items.Add(new OperatorRenderingExpressionItem(OperatorType.Subtract));
}
else if (value[i] == '\\')
{
if (escaping)
{
sbLiteral.Append(value[i]);
escaping = false;
continue;
}
escaping = true;
}
else if (value[i] == '$')
{
if (escaping)
{
sbLiteral.Append(value[i]);
escaping = false;
continue;
}
if (value[i + 1] == '(')
{
int start = i + 2;
int end = value.IndexOf(')', i + 2) - start;
string variableName = value.Substring(start, end);
i += 2;
i += variableName.Length;
expr.Items.Add(new VariableRenderingExpressionItem(variableName));
}
}
else
{
if (sbLiteral.Length > 0)
{
float val = Single.Parse(sbLiteral.ToString());
sbLiteral = new StringBuilder();
expr.Items.Add(new LiteralRenderingExpressionItem(val));
}
}
}
// final loop
if (sbLiteral.Length > 0)
{
float val = Single.Parse(sbLiteral.ToString());
sbLiteral = new StringBuilder();
expr.Items.Add(new LiteralRenderingExpressionItem(val));
}
return(expr);
}
public static RenderingExpression Parse(string value)
{
RenderingExpression expr = new RenderingExpression();
bool escaping = false;
StringBuilder sbLiteral = new StringBuilder();
for (int i = 0; i < value.Length; i++)
{
if (IsNumeric(value[i]) || (value[i] == '.' && sbLiteral.Length > 0))
{
sbLiteral.Append(value[i]);
}
else if (value[i] == ' ')
{
continue;
}
else if (value[i] == '-')
{
expr.Items.Add(new OperatorRenderingExpressionItem(OperatorType.Subtract));
}
else if (value[i] == '\\')
{
if (escaping)
{
sbLiteral.Append(value[i]);
escaping = false;
continue;
}
escaping = true;
}
else if (value[i] == '$')
{
if (escaping)
{
sbLiteral.Append(value[i]);
escaping = false;
continue;
}
if (value[i + 1] == '(')
{
int start = i + 2;
int end = value.IndexOf(')', i + 2) - start;
string variableName = value.Substring(start, end);
i += 2;
i += variableName.Length;
expr.Items.Add(new VariableRenderingExpressionItem(variableName));
}
}
else
{
if (sbLiteral.Length > 0)
{
float val = Single.Parse(sbLiteral.ToString());
sbLiteral = new StringBuilder();
expr.Items.Add(new LiteralRenderingExpressionItem(val));
}
}
}
// final loop
if (sbLiteral.Length > 0)
{
float val = Single.Parse(sbLiteral.ToString());
sbLiteral = new StringBuilder();
expr.Items.Add(new LiteralRenderingExpressionItem(val));
}
return expr;
}
public object Clone()
{
RenderingExpression clone = new RenderingExpression();
foreach (RenderingExpressionItem item in mvarItems)
{
clone.Items.Add(item.Clone() as RenderingExpressionItem);
}
return clone;
}
