public static bool TryParseDecimal(ReadOnlySpan <byte> text, out decimal value, out int bytesConsumed, SymbolTable symbolTable = null)
{
symbolTable = symbolTable ?? SymbolTable.InvariantUtf8;
bytesConsumed = 0;
value = default;
if (symbolTable == SymbolTable.InvariantUtf8)
{
return(Utf8Parser.TryParse(text, out value, out bytesConsumed));
}
else if (symbolTable == SymbolTable.InvariantUtf16)
{
ReadOnlySpan <char> textChars = text.NonPortableCast <byte, char>();
bool result = Utf16Parser.TryParseDecimal(textChars, out value, out int charactersConsumed);
bytesConsumed = charactersConsumed * sizeof(char);
return(result);
}
return(false);
}
public unsafe void DecimalPositiveTests(string text, int length, decimal expectedValue, int expectedConsumed)
{
byte[] byteBuffer = Text.Encoding.UTF8.GetBytes(text);
ReadOnlySpan <byte> byteSpan = new ReadOnlySpan <byte>(byteBuffer);
char[] charBuffer = text.ToCharArray();
ReadOnlySpan <char> charSpan = new ReadOnlySpan <char>(charBuffer);
bool result;
result = CustomParser.TryParseDecimal(byteSpan, out decimal actualValue, out int actualConsumed, SymbolTable.InvariantUtf8);
Assert.True(result);
Assert.Equal(expectedValue, actualValue);
Assert.Equal(expectedConsumed, actualConsumed);
result = Utf8Parser.TryParse(byteSpan, out actualValue, out actualConsumed);
Assert.True(result);
Assert.Equal(expectedValue, actualValue);
Assert.Equal(expectedConsumed, actualConsumed);
ReadOnlySpan <byte> utf16ByteSpan = charSpan.AsBytes();
result = CustomParser.TryParseDecimal(utf16ByteSpan, out actualValue, out actualConsumed, SymbolTable.InvariantUtf16);
Assert.True(result);
Assert.Equal(expectedValue, actualValue);
Assert.Equal(expectedConsumed, actualConsumed / 2);
result = Utf16Parser.TryParseDecimal(charSpan, out actualValue);
Assert.True(result);
Assert.Equal(expectedValue, actualValue);
result = Utf16Parser.TryParseDecimal(charSpan, out actualValue, out actualConsumed);
Assert.True(result);
Assert.Equal(expectedValue, actualValue);
Assert.Equal(expectedConsumed, actualConsumed);
}
