bitcoinleveldb-table 0.1.16-alpha.0

abstractions for working with Tables -- a Table is a sorted map from strings to strings. Tables are immutable and persistent. A Table may be safely accessed from multiple threads without external synchronization.
Documentation 
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

crate::ix!();

/**
  | 1-byte type + 32-bit crc
  |
  */
pub const BLOCK_TRAILER_SIZE: usize = 5;

pub struct BlockContents {

    /**
      | Actual contents of data
      |
      */
    data:           Slice,

    /**
      | True iff data can be cached
      |
      */
    cachable:       bool,

    /**
      | True iff caller should delete[] data.data()
      |
      */
    heap_allocated: bool,
}

/**
  | BlockHandle is a pointer to the extent
  | of a file that stores a data block or a
  | meta block.
  |
  */
#[derive(Default)]
pub struct BlockHandle {
    offset: u64,
    size:   u64,
}

/**
  | Maximum encoding length of a BlockHandle
  |
  */
pub const BLOCK_HANDLE_MAX_ENCODED_LENGTH: usize = 10 + 10;

impl BlockHandle {

    /**
      | The offset of the block in the file.
      |
      */
    pub fn offset(&self) -> u64 {
        
        todo!();
        /*
            return offset_;
        */
    }
    
    pub fn set_offset(&mut self, offset: u64)  {
        
        todo!();
        /*
            offset_ = offset;
        */
    }

    /**
       The size of the stored block
      */
    pub fn size(&self) -> u64 {
        
        todo!();
        /*
            return size_;
        */
    }
    
    pub fn set_size(&mut self, size: u64)  {
        
        todo!();
        /*
            size_ = size;
        */
    }
    
    /**
      | Implementation details follow. Clients
      | should ignore,
      |
      */
    pub fn new() -> Self {

        todo!();
        /*
           : offset_(~static_cast<uint64_t>(0)), size_(~static_cast<uint64_t>(0))
           */
    }
    
    pub fn encode_to(&self, dst: *mut String)  {
        
        todo!();
        /*
            // Sanity check that all fields have been set
      assert(offset_ != ~static_cast<uint64_t>(0));
      assert(size_ != ~static_cast<uint64_t>(0));
      PutVarint64(dst, offset_);
      PutVarint64(dst, size_);
        */
    }
    
    pub fn decode_from(&mut self, input: *mut Slice) -> crate::Status {
        
        todo!();
        /*
            if (GetVarint64(input, &offset_) && GetVarint64(input, &size_)) {
        return Status::OK();
      } else {
        return Status::Corruption("bad block handle");
      }
        */
    }
}