} // end _TryCrackTemplate()
/// <summary>
/// Converts a name into either a DbgTemplateLeaf or a DbgTemplate.
/// </summary>
public static DbgTemplateNode CrackTemplate(string name)
{
string problem;
DbgTemplateNode templatePart;
if (!_TryCrackTemplate(name, 0, out templatePart, out problem))
{
// TODO: SQM? I think that this can only happen if there are unbalanced brackets.
LogManager.Trace("Warning: weird type name: {0}", name);
LogManager.Trace("Warning: Problem: {0}", problem);
Util.Fail(Util.Sprintf("Weird type name ({0}): {1}", problem, name));
templatePart = new DbgTemplateLeaf(name, false);
}
return(templatePart);
} // end CrackTemplate()
} // end _HasTwoColonsPreceding()
private static bool _TryCrackTemplate(string name,
int startIdx,
out DbgTemplateNode templatePart,
out string problem)
{
templatePart = null;
problem = null;
name = name.Trim();
bool hasConst = false;
if (name.StartsWith("const ", StringComparison.OrdinalIgnoreCase))
{
// I haven't actually observed any type names with "const" at the
// beginning, but it seems like it could be possible.
hasConst = true;
name = name.Substring(6).Trim();
}
else if (name.EndsWith(" const", StringComparison.OrdinalIgnoreCase))
{
hasConst = true;
name = name.Substring(0, name.Length - 6).Trim();
}
int idx;
if (!_LooksLikeATemplateName(name, startIdx, /* angleBracketIdx */ out idx))
{
templatePart = new DbgTemplateLeaf(name.Substring(startIdx), hasConst);
return(true);
}
var templateName = name.Substring(startIdx, idx - startIdx);
StringBuilder sb = new StringBuilder();
DbgTemplateNode nestedType = null;
int depth = 1;
var templateParams = new List <DbgTemplateNode>();
for (idx = idx + 1; idx < name.Length; idx++) // start after the first '<'
{
char c = name[idx];
if ('<' == c)
{
depth++;
}
else if ('>' == c)
{
depth--;
if (depth < 0)
{
problem = Util.Sprintf("Unbalanced closing angle bracket at position {0}.", idx);
return(false);
}
if (0 == depth)
{
if (sb.Length > 0)
{
templateParams.Add(CrackTemplate(sb.ToString().Trim()));
}
if (idx != (name.Length - 1))
{
// TODO: '+' for nested types in managed generic types?
if ((name.Length < (idx + 4)) || // there has to be at least "::X"
(name[idx + 1] != ':') ||
(name[idx + 2] != ':'))
{
problem = Util.Sprintf("Unexpected characters at position {0}.", idx);
return(false);
}
idx += 3; // skip the "::"
if (!_TryCrackTemplate(name, idx, out nestedType, out problem))
{
Util.Assert(!String.IsNullOrEmpty(problem));
return(false);
}
}
break;
}
}
if (depth > 1)
{
sb.Append(c);
}
else
{
Util.Assert(1 == depth);
if (',' == c)
{
// TODO: Hmm... I wonder if it's possible to get a symbol with ",," (which
// would lead to an empty part name, which will throw).
templateParams.Add(CrackTemplate(sb.ToString().Trim()));
sb.Clear();
}
else
{
sb.Append(c);
}
}
} // end for( each character )
templatePart = new DbgTemplate(templateName,
templateParams.AsReadOnly(),
nestedType,
hasConst);
return(true);
} // end _TryCrackTemplate()
