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cache some more common values and improve performance of tokenizers

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This commit is contained in:
Eliot Jones
2019-12-22 23:34:33 +00:00
parent e048bb8c2c
commit ba9fe40bc1
4 changed files with 118 additions and 44 deletions
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11
src/UglyToad.PdfPig/Tokenization/Scanner/CoreTokenScanner.cs
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@@ -11,13 +11,13 @@
{
private static readonly HexTokenizer HexTokenizer = new HexTokenizer();
private static readonly StringTokenizer StringTokenizer = new StringTokenizer();
private static readonly NumericTokenizer NumericTokenizer = new NumericTokenizer();
private static readonly NameTokenizer NameTokenizer = new NameTokenizer();
private static readonly PlainTokenizer PlainTokenizer = new PlainTokenizer();
private static readonly ArrayTokenizer ArrayTokenizer = new ArrayTokenizer();
private static readonly DictionaryTokenizer DictionaryTokenizer = new DictionaryTokenizer();
private static readonly CommentTokenizer CommentTokenizer = new CommentTokenizer();
private readonly NumericTokenizer numericTokenizer = new NumericTokenizer();
private readonly ScannerScope scope;
private readonly IInputBytes inputBytes;
private readonly List<(byte firstByte, ITokenizer tokenizer)> customTokenizers = new List<(byte, ITokenizer)>();
@@ -83,7 +83,7 @@
if (tokenizer == null)
{
if (IsEmpty(currentByte) || ReadHelper.IsWhitespace(currentByte))
if (ReadHelper.IsWhitespace(currentByte))
{
isSkippingSymbol = false;
continue;
@@ -143,7 +143,7 @@
case '-':
case '+':
case '.':
tokenizer = NumericTokenizer;
tokenizer = numericTokenizer;
break;
default:
tokenizer = PlainTokenizer;
@@ -284,10 +284,5 @@
throw new PdfDocumentFormatException($"No end of inline image data (EI) was found for image data at position {startsAt}.");
}
private static bool IsEmpty(byte b)
{
return b == ' ' || b == '\r' || b == '\n' || b == 0;
}
}
}