pub fn end<'a, I>() -> Parser<'a, I, ()>where
I: Display,
Expand description
Success when end of input is reached.
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examples/utf8_mixed.rs (line 31)
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fn main() {
// A parser for MsgPack (but only messages encoding a string)
let testcases: [Vec<u8>; 6] = [
vec![0b10100100, 0b11110000, 0b10011111, 0b10100100, 0b10010100], // 🤔, max-size 31 format
vec![0xd9, 4, 0b11110000, 0b10011111, 0b10011000, 0b10101110], // 😮, max-size 255 format
vec![0xda, 0, 4, 0b11110000, 0b10011111, 0b10100100, 0b10101111], // 🤯, max-size 2^16-1 format
vec![
0xdb, 0, 0, 0, 4, 0b11110000, 0b10011111, 0b10010010, 0b10100101,
], // 💥, max-size 2^32-1 format
vec![0xc4, 4, 0b11110000, 0b10011111, 0b10011000, 0b10101110], // Valid MsgPack, but not a string (binary)
vec![0b10100100, 0b10010100, 0b10100100, 0b10011111, 0b11110000], // A MsgPack string, but invalid UTF-8
];
const MASK: u8 = 0b11100000; // size 31 format is denoted by 3 high bits == 101
const SIZE_31: u8 = 0b10100000;
fn rest_as_str<'a>() -> utf8::Parser<'a, &'a str> {
utf8::any().repeat(0..).collect()
}
// Demo parser does not verify that the claimed length matches the actual length (but checking so is simple with >>)
let parser = (sym(0xdb) * any().repeat(4) * rest_as_str()) // 2^32-1 format
| (sym(0xda) * any().repeat(2) * rest_as_str()) // 2^16-1 format
| (sym(0xd9) * any() * rest_as_str()) // 255 format
| (is_a(|x| x&MASK == SIZE_31) * rest_as_str()) // 31 format
- end();
for testcase in testcases.iter() {
println!("{:?}", parser.parse(testcase));
}
}