public override IEnumerable<XElement> Parse(string[] lines)
{
XElement current = null;
foreach (string l in lines)
{
// Clean up line for further processing and skip invalid lines.
string line = l.Replace('\t', ' ').Trim();
if (!IsValid(line))
continue;
string[] words = SplitWords(line);
if (line.Contains("enum:"))
{
// This is a new enum definition
if (current != null)
yield return current;
current = new XElement("enum",
new XAttribute("name", words[0]));
CurrentMode = ParserModes.Enum;
}
else if (line.StartsWith(words[0] + "("))
{
// This is a new function definition
if (current != null)
yield return current;
var match = extensions.Match(words[0]);
string extension = match != null && String.IsNullOrEmpty(match.Value) ? "Core" : match.Value;
current = new XElement("function",
new XAttribute("name", words[0]),
new XAttribute("extension", extension));
CurrentMode = ParserModes.Func;
}
else if (current != null)
{
// This is an addition to the current element (enum or function)
switch (CurrentMode)
{
case ParserModes.Enum:
if (words[0] == "use")
{
current.Add(new XElement("use",
new XAttribute("enum", words[1]),
new XAttribute("token", words[2])));
}
else if (words[1] == "=")
{
current.Add(new XElement("token",
new XAttribute("name", words[0]),
new XAttribute("value", words[2])));
}
else
{
// Typical cause is hand-editing the specs and forgetting to add an '=' sign.
throw new InvalidOperationException(String.Format(
"[Error] Invalid constant definition: \"{0}\"", line));
}
break;
case ParserModes.Func:
switch (words[0])
{
case "return": // Line denotes return value
current.Add(new XElement("returns",
new XAttribute("type", words[1])));
break;
case "param": // Line denotes parameter
int pointer = words[4].Contains("array") ? 1 : 0;
pointer += words[4].Contains("reference") ? 1 : 0;
var elem = new XElement("param",
new XAttribute("name", words[1]),
new XAttribute("type", words[2] + PointerLevel(pointer)),
new XAttribute("flow", words[3] == "in" ? "in" : "out"));
if (pointer > 0 && words.Length > 5 && words[5].Contains("[1]"))
elem.Add(new XAttribute("count", 1));
current.Add(elem);
break;
case "version": // Line denotes function version (i.e. 1.0, 1.2, 1.5)
// GetTexParameterIivEXT and GetTexParameterIuivEXT define two(!) versions (why?)
var version = current.Attribute("version");
if (version == null)
current.Add(new XAttribute("version", words[1]));
else
version.Value = words[1];
break;
case "category":
current.Add(new XAttribute("category", words[1]));
break;
case "deprecated":
current.Add(new XAttribute("deprecated", words[1]));
break;
}
break;
}
}
}
if (current != null)
{
yield return current;
}
}
