public static PDFXrefEntry Parse(Stack <IPDFToken> tokens, PDFTokenType type)
{
PDFXrefEntry entry = new PDFXrefEntry();
entry.InUse = type == PDFTokenType.XrefEntryInUse;
entry.Generation = (int)tokens.Pop <PDFInteger>().Value;
entry.Offset = (long)tokens.Pop <PDFInteger>().Value;
return(entry);
}
public static IPDFToken Pop(this Stack <IPDFToken> tokens, PDFTokenType expected)
{
IPDFToken token = tokens.Pop();
if (token.TokenType != expected)
{
throw new InvalidDataException();
}
return(token);
}
public PDFToken(PDFTokenType tokenType)
{
this.TokenType = tokenType;
}
public static bool Has(this Stack <IPDFToken> tokens, PDFTokenType expected)
{
return(tokens.Peek().TokenType == expected);
}
public static bool TryPop <T>(this Stack <IPDFToken> tokens, PDFTokenType expected, out T val)
where T : IPDFToken
{
return(TryPop <T>(tokens, out val, v => v.TokenType == expected));
}
