blob: 8f61d18e8795b032c7c68592f0087f07c7fff84e (
plain)
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
|
use winnow::prelude::*;
mod parser;
mod parser_str;
fn main() -> Result<(), lexopt::Error> {
let args = Args::parse()?;
let input = args.input.as_deref().unwrap_or("1 + 1");
if args.binary {
match parser::categories.parse(input.as_bytes()) {
Ok(result) => {
println!(" {:?}", result);
}
Err(err) => {
println!(" {:?}", err);
}
}
} else {
match parser_str::categories.parse(input) {
Ok(result) => {
println!(" {:?}", result);
}
Err(err) => {
println!(" {}", err);
}
}
}
Ok(())
}
#[derive(Default)]
struct Args {
input: Option<String>,
binary: bool,
}
impl Args {
fn parse() -> Result<Self, lexopt::Error> {
use lexopt::prelude::*;
let mut res = Args::default();
let mut args = lexopt::Parser::from_env();
while let Some(arg) = args.next()? {
match arg {
Long("binary") => {
res.binary = true;
}
Value(input) => {
res.input = Some(input.string()?);
}
_ => return Err(arg.unexpected()),
}
}
Ok(res)
}
}
|
