1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133

/// Extension methods for XML-subset only operations.
pub trait XmlCharExt {
    /// Checks if the value is within the
    /// [NameStartChar](https://www.w3.org/TR/xml/#NT-NameStartChar) range.
    fn is_xml_name_start(&self) -> bool;

    /// Checks if the value is within the
    /// [NameChar](https://www.w3.org/TR/xml/#NT-NameChar) range.
    fn is_xml_name(&self) -> bool;

    /// Checks if the value is within the
    /// [Char](https://www.w3.org/TR/xml/#NT-Char) range.
    fn is_xml_char(&self) -> bool;
}

impl XmlCharExt for char {
    #[inline]
    fn is_xml_name_start(&self) -> bool {
        match *self {
            'A'...'Z' | 'a'...'z' | ':' | '_' => true, // shortcut
            _ => {
                match *self as u32 {
                      0x0000C0...0x0000D6
                    | 0x0000D8...0x0000F6
                    | 0x0000F8...0x0002FF
                    | 0x000370...0x00037D
                    | 0x00037F...0x001FFF
                    | 0x00200C...0x00200D
                    | 0x002070...0x00218F
                    | 0x002C00...0x002FEF
                    | 0x003001...0x00D7FF
                    | 0x00F900...0x00FDCF
                    | 0x00FDF0...0x00FFFD
                    | 0x010000...0x0EFFFF => true,
                    _ => false,
                }
            }
        }
    }

    #[inline]
    fn is_xml_name(&self) -> bool {
        if self.is_xml_name_start() {
            return true;
        }

        match *self as u32 {
              0x002D // -
            | 0x002E // .
            | 0x00B7
            | 0x0030...0x0039 // 0...9
            | 0x0300...0x036F
            | 0x203F...0x2040 => true,
            _ => false,
        }
    }

    #[inline]
    fn is_xml_char(&self) -> bool {
        match *self as u32 {
              0x000009
            | 0x00000A
            | 0x00000D
            | 0x000020...0x000D7FF
            | 0x00E000...0x000FFFD
            | 0x010000...0x010FFFF => true,
            _ => false,
        }
    }
}


/// Extension methods for XML-subset only operations.
pub trait XmlByteExt {
    /// Checks if a byte is a digit.
    ///
    /// `[0-9]`
    fn is_xml_digit(&self) -> bool;

    /// Checks if a byte is a hex digit.
    ///
    /// `[0-9A-Fa-f]`
    fn is_xml_hex_digit(&self) -> bool;

    /// Checks if a byte is a space.
    ///
    /// `[ \r\n\t]`
    fn is_xml_space(&self) -> bool;

    /// Checks if a byte is an ASCII char.
    ///
    /// `[A-Za-z]`
    fn is_xml_letter(&self) -> bool;
}

impl XmlByteExt for u8 {
    #[inline]
    fn is_xml_digit(&self) -> bool {
        match *self {
            b'0'...b'9' => true,
            _ => false,
        }
    }

    #[inline]
    fn is_xml_hex_digit(&self) -> bool {
        match *self {
              b'0'...b'9'
            | b'A'...b'F'
            | b'a'...b'f' => true,
            _ => false,
        }
    }

    #[inline]
    fn is_xml_space(&self) -> bool {
        match *self {
              b' '
            | b'\t'
            | b'\n'
            | b'\r' => true,
            _ => false,
        }
    }

    #[inline]
    fn is_xml_letter(&self) -> bool {
        match *self {
            b'A'...b'Z' | b'a'...b'z' => true,
            _ => false,
        }
    }
}