protected override IEnumerable <GnToken> GetTokens()
{
int braceNesting = 0;
string currentConfig = null;
bool inPdfiumLibrary = false;
GnToken token;
while ((token = GetToken()) != null)
{
switch (token.Type)
{
case GnTokenType.BraceOpen:
yield return(token);
braceNesting++;
break;
case GnTokenType.BraceClose:
yield return(token);
braceNesting--;
if (braceNesting == 0)
{
currentConfig = null;
inPdfiumLibrary = false;
}
break;
case GnTokenType.Identifier:
if (braceNesting == 0 && token.Text == "config")
{
yield return(token);
yield return(GetToken(GnTokenType.ParenOpen));
yield return(token = GetToken(GnTokenType.String));
currentConfig = ParseString(token.Text);
yield return(GetToken(GnTokenType.ParenClose));
}
else if (currentConfig == "pdfium_common_config" && token.Text == "include_dirs")
{
yield return(token);
yield return(token = GetToken());
if (token.Type == GnTokenType.Equals)
{
foreach (var child in AddToList(new GnToken(GnTokenType.String, "\"v8/include\"")))
{
yield return(child);
}
}
}
else if (currentConfig == "pdfium_common_config" && token.Text == "defines")
{
yield return(token);
yield return(token = GetToken());
if (token.Type == GnTokenType.Equals)
{
foreach (var child in AddToList(new GnToken(GnTokenType.String, "\"FPDFSDK_EXPORTS\"")))
{
yield return(child);
}
}
}
else if (inPdfiumLibrary && token.Text == "sources" && _contribs.Count > 0)
{
yield return(token);
yield return(token = GetToken());
if (token.Type == GnTokenType.Equals)
{
var extraTokens = new List <GnToken>();
foreach (var contrib in _contribs)
{
if (extraTokens.Count > 0)
{
extraTokens.Add(new GnToken(GnTokenType.Comma));
}
extraTokens.Add(new GnToken(
GnTokenType.String,
"\"" + contrib.Replace(Path.DirectorySeparatorChar, '/') + "\""
));
}
foreach (var child in AddToList(extraTokens))
{
yield return(child);
}
}
}
else if (braceNesting == 0 && (token.Text == "static_library" || token.Text == "jumbo_static_library"))
{
var tokens = new List <GnToken>();
tokens.Add(token);
tokens.Add(GetToken(GnTokenType.ParenOpen));
token = GetToken(GnTokenType.String);
tokens.Add(token);
inPdfiumLibrary = ParseString(token.Text) == "pdfium";
tokens.Add(GetToken(GnTokenType.ParenClose));
if (inPdfiumLibrary)
{
tokens[0] = new GnToken(GnTokenType.Identifier, "shared_library");
}
foreach (var child in tokens)
{
yield return(child);
}
}
else
{
yield return(token);
}
break;
default:
yield return(token);
break;
}
}
}
private IEnumerable <GnToken> AddToList(GnToken token)
{
return(AddToList(new[] { token }));
}