忽略令牌

    Ignored::
        UnicodeBOM
        WhiteSpace
        LineTerminator
        Comment
        Comma

Before and after every lexical token may be any amount of ignored tokens including WhiteSpace and Comment. No ignored regions of a source document are significant, however ignored source characters may appear within a lexical token in a significant way, for example a String may contain white space characters.

No characters are ignored while parsing a given token, as an example no white space characters are permitted between the characters defining a FloatValue.