public void Add(Int32 amount)
{
if (!TryAdd(amount))
{
throw new InvalidOperationException(ExpressionResources.ExceededAllowedMemory(m_node?.ConvertToExpression()));
}
}
protected sealed override Object EvaluateCore(
EvaluationContext context,
out ResultMemory resultMemory)
{
resultMemory = null;
var format = Parameters[0].Evaluate(context).ConvertToString();
var index = 0;
var result = new FormatResultBuilder(this, context, CreateMemoryCounter(context));
while (index < format.Length)
{
var lbrace = format.IndexOf('{', index);
var rbrace = format.IndexOf('}', index);
// Left brace
if (lbrace >= 0 && (rbrace < 0 || rbrace > lbrace))
{
// Escaped left brace
if (SafeCharAt(format, lbrace + 1) == '{')
{
result.Append(format.Substring(index, lbrace - index + 1));
index = lbrace + 2;
}
// Left brace, number, optional format specifiers, right brace
else if (rbrace > lbrace + 1 &&
ReadArgIndex(format, lbrace + 1, out Byte argIndex, out Int32 endArgIndex) &&
ReadFormatSpecifiers(format, endArgIndex + 1, out String formatSpecifiers, out rbrace))
{
// Check parameter count
if (argIndex > Parameters.Count - 2)
{
throw new FormatException(ExpressionResources.InvalidFormatArgIndex(format));
}
// Append the portion before the left brace
if (lbrace > index)
{
result.Append(format.Substring(index, lbrace - index));
}
// Append the arg
result.Append(argIndex, formatSpecifiers);
index = rbrace + 1;
}
else
{
throw new FormatException(ExpressionResources.InvalidFormatString(format));
}
}
internal void AddAmount(
Int32 depth,
Int32 bytes,
Boolean trimDepth = false)
{
// Trim deeper depths
if (trimDepth)
{
while (m_maxActiveDepth > depth)
{
var amount = m_depths[m_maxActiveDepth];
if (amount > 0)
{
// Sanity check
if (amount > m_totalAmount)
{
throw new InvalidOperationException("Bytes to subtract exceeds total bytes");
}
// Subtract from the total
checked
{
m_totalAmount -= amount;
}
// Reset the amount
m_depths[m_maxActiveDepth] = 0;
}
m_maxActiveDepth--;
}
}
// Grow the depths
if (depth > m_maxActiveDepth)
{
// Grow the list
while (m_depths.Count <= depth)
{
m_depths.Add(0);
}
// Adjust the max active depth
m_maxActiveDepth = depth;
}
checked
{
// Add to the depth
m_depths[depth] += bytes;
// Add to the total
m_totalAmount += bytes;
}
// Check max
if (m_totalAmount > m_maxAmount)
{
throw new InvalidOperationException(ExpressionResources.ExceededAllowedMemory(m_node?.ConvertToExpression()));
}
}
