      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
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    163
    164
    165
    166
    167
    168
    169
    170
    171
    172
    173
    174
    175
    176
    177
    178

    //! Wrapper around `Vec<u8>`

    use std::{ops, str, fmt, io, marker};
    use hex::{ToHex, FromHex, FromHexError};
    use heapsize::HeapSizeOf;

    /// Wrapper around `Vec<u8>`
    #[derive(Default, PartialEq, Clone, Eq, Hash)]
    pub struct Bytes(Vec<u8>);

    impl Bytes {
    	pub fn new() -> Self {
    		Bytes::default()
    	}

    	pub fn new_with_len(len: usize) -> Self {
    		Bytes(vec![0; len])
    	}

    	pub fn take(self) -> Vec<u8> {
    		self.0
    	}

    	pub fn len(&self) -> usize {
    		self.0.len()
    	}

    	pub fn append(&mut self, other: &mut Bytes) {
    		self.0.append(&mut other.0);
    	}

    	pub fn split_off(&mut self, at: usize) -> Bytes {
    		Bytes(self.0.split_off(at))
    	}
    }

    impl HeapSizeOf for Bytes {
    	fn heap_size_of_children(&self) -> usize {
    		self.0.heap_size_of_children()
    	}
    }

    impl<'a> From<&'a [u8]> for Bytes {
    	fn from(v: &[u8]) -> Self {
    		Bytes(v.into())
    	}
    }

    impl From<Vec<u8>> for Bytes {
    	fn from(v: Vec<u8>) -> Self {
    		Bytes(v)
    	}
    }

    impl From<Bytes> for Vec<u8> {
    	fn from(bytes: Bytes) -> Self {
    		bytes.0
    	}
    }

    impl From<&'static str> for Bytes {
    	fn from(s: &'static str) -> Self {
    		s.parse().unwrap()
    	}
    }

    impl str::FromStr for Bytes {
    	type Err = FromHexError;

    	fn from_str(s: &str) -> Result<Self, Self::Err> {
    		s.from_hex().map(Bytes)
    	}
    }

    impl io::Write for Bytes {
    	fn write(&mut self, buf: &[u8]) -> Result<usize, io::Error> {
    		self.0.write(buf)
    	}

    	fn flush(&mut self) -> Result<(), io::Error> {
    		self.0.flush()
    	}
    }

    impl fmt::Debug for Bytes {
    	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    		f.write_str(&self.0.to_hex::<String>())
    	}
    }

    impl ops::Deref for Bytes {
    	type Target = Vec<u8>;

    	fn deref(&self) -> &Self::Target {
    		&self.0
    	}
    }

    impl ops::DerefMut for Bytes {
    	fn deref_mut(&mut self) -> &mut Self::Target {
    		&mut self.0
    	}
    }

    impl AsRef<[u8]> for Bytes {
    	fn as_ref(&self) -> &[u8] {
    		&self.0
    	}
    }

    impl AsMut<[u8]> for Bytes {
    	fn as_mut(&mut self) -> &mut [u8] {
    		&mut self.0
    	}
    }

    /// Wrapper around `Vec<u8>` which represent associated type
    #[derive(Default, PartialEq, Clone)]
    pub struct TaggedBytes<T> {
    	bytes: Bytes,
    	label: marker::PhantomData<T>,
    }

    impl<T> TaggedBytes<T> {
    	pub fn new(bytes: Bytes) -> Self {
    		TaggedBytes {
    			bytes: bytes,
    			label: marker::PhantomData,
    		}
    	}

    	pub fn into_raw(self) -> Bytes {
    		self.bytes
    	}
    }

    impl<T> ops::Deref for TaggedBytes<T> {
    	type Target = Vec<u8>;

    	fn deref(&self) -> &Self::Target {
    		&self.bytes.0
    	}
    }

    impl<T> ops::DerefMut for TaggedBytes<T> {
    	fn deref_mut(&mut self) -> &mut Self::Target {
    		&mut self.bytes.0
    	}
    }

    impl<T> AsRef<[u8]> for TaggedBytes<T> {
    	fn as_ref(&self) -> &[u8] {
    		&self.bytes.0
    	}
    }

    impl<T> AsMut<[u8]> for TaggedBytes<T> {
    	fn as_mut(&mut self) -> &mut [u8] {
    		&mut self.bytes.0
    	}
    }

    #[cfg(test)]
    mod tests {
    	use super::Bytes;

    	#[test]
    	fn test_bytes_from_hex() {
    		let bytes: Bytes = "0145".into();
    		assert_eq!(bytes, vec![0x01, 0x45].into());
    	}

    	#[test]
    	fn test_bytes_debug_formatter() {
    		let bytes: Bytes = "0145".into();
    		assert_eq!(format!("{:?}", bytes), "0145".to_owned());
    	}
    }

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g. `str,u8` or `String,struct:Vec,test`)