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
|
use walkdir::WalkDir;
use std::path::PathBuf;
use std::{env, fs};
fn main() {
// The src directory (we are in src/tools/error_index_generator)
// Note that we could skip one of the .. but this ensures we at least loosely find the right
// directory.
let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
let dest = out_dir.join("error_codes.rs");
let mut idx = 0;
for entry in WalkDir::new("../../../src") {
let entry = entry.unwrap();
if entry.file_name() == "error_codes.rs" {
println!("cargo:rerun-if-changed={}", entry.path().to_str().unwrap());
let file = fs::read_to_string(entry.path()).unwrap()
.replace("syntax::register_diagnostics!", "register_diagnostics!");
let contents = format!("(|| {{\n{}\n}})()", file);
fs::write(&out_dir.join(&format!("error_{}.rs", idx)), &contents).unwrap();
idx += 1;
}
}
let mut all = String::new();
all.push_str(r###"
fn register_all() -> Vec<(&'static str, Option<&'static str>)> {
let mut long_codes: Vec<(&'static str, Option<&'static str>)> = Vec::new();
macro_rules! register_diagnostics {
($($ecode:ident: $message:expr,)*) => (
register_diagnostics!{$($ecode:$message,)* ;}
);
($($ecode:ident: $message:expr,)* ; $($code:ident,)*) => (
$(
{long_codes.extend([
(stringify!($ecode), Some($message)),
].iter());}
)*
$(
{long_codes.extend([
stringify!($code),
].iter().cloned().map(|s| (s, None)).collect::<Vec<_>>());}
)*
)
}
"###);
for idx in 0..idx {
all.push_str(&format!(r#"include!(concat!(env!("OUT_DIR"), "/error_{}.rs"));"#, idx));
all.push_str("\n");
}
all.push_str("\nlong_codes\n");
all.push_str("}\n");
fs::write(&dest, all).unwrap();
}
|
