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
|
/// tree-based source processor
#[derive(argh::FromArgs)]
struct Cli {
/// read the tbsp program source from a file
#[argh(option, short = 'f')]
program_file: std::path::PathBuf,
/// set the language that the file is written in
#[argh(option, short = 'l')]
language: String,
/// input file to process
#[argh(positional)]
file: Option<std::path::PathBuf>,
}
impl Cli {
fn program(&self) -> String {
std::fs::read_to_string(&self.program_file).unwrap_or_else(|e| {
eprintln!(
"failed to read program-file from `{}`: {e}",
self.program_file.display()
);
std::process::exit(-1);
})
}
fn language(&self) -> tree_sitter::Language {
match self.language.as_str() {
"md" => tree_sitter_md::language(),
"typescript" => tree_sitter_typescript::language_typescript(),
"javascript" => tree_sitter_javascript::language(),
"python" => tree_sitter_python::language(),
"rust" => tree_sitter_rust::language(),
lang => {
eprintln!("unknown language `{lang}`");
std::process::exit(-1);
}
}
}
fn file(&self) -> String {
match self.file.as_ref() {
Some(f) => std::fs::read_to_string(f).unwrap_or_else(|e| {
eprintln!("failed to read input-file from `{}`: {e}", f.display());
std::process::exit(-1);
}),
None => try_consume_stdin().unwrap_or_else(|e| {
eprintln!("failed to read input-file from stdin: {e}");
std::process::exit(-1);
}),
}
}
}
fn try_consume_stdin() -> std::io::Result<String> {
let mut buffer = String::new();
let mut lock = std::io::stdin().lock();
while let Ok(n) = std::io::Read::read_to_string(&mut lock, &mut buffer) {
if n == 0 {
break;
}
}
if buffer.is_empty() {
Err(std::io::Error::other("empty stdin"))
} else {
Ok(buffer)
}
}
fn main() {
let cli: Cli = argh::from_env();
tbsp::evaluate(&cli.file(), &cli.program(), cli.language()).unwrap_or_else(|e| {
eprintln!("{e:?}");
std::process::exit(-1);
});
}
|
