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use std::env;
use std::ffi::OsString;
use std::fs::File;
use std::io::Write;
use std::path::Path;
use walkdir::WalkDir;
fn dhall_files_in_dir<'a>(dir: &'a Path) -> impl Iterator<Item = String> + 'a {
WalkDir::new(dir)
.into_iter()
.filter_map(|e| e.ok())
.filter_map(move |path| {
let path = path.path();
let path = path.strip_prefix(dir).unwrap();
if path.extension() != Some(&OsString::from("dhall")) {
return None;
}
let path = path.to_string_lossy();
let path = path[..path.len() - 6].to_owned();
Some(path)
})
}
fn main() -> std::io::Result<()> {
println!("cargo:rerun-if-changed=../dhall-lang/.git");
println!(
"cargo:rerun-if-changed=../.git/modules/dhall-lang/refs/heads/master"
);
let out_dir = env::var("OUT_DIR").unwrap();
let tests_dir = Path::new("../dhall-lang/tests/");
let parser_tests_path = Path::new(&out_dir).join("parser_tests.rs");
let mut file = File::create(parser_tests_path)?;
for path in dhall_files_in_dir(&tests_dir.join("parser/success/")) {
let path = &path[..path.len() - 1];
let name = path.replace("/", "_");
// Skip this test; parser is way too slow indebug mode
if name == "largeExpression" {
continue;
}
writeln!(
file,
r#"make_spec_test!(ParserSuccess, spec_parser_success_{}, "{}");"#,
name, path
)?;
}
for path in dhall_files_in_dir(&tests_dir.join("parser/failure/")) {
let name = path.replace("/", "_");
writeln!(
file,
r#"make_spec_test!(ParserFailure, spec_parser_failure_{}, "{}");"#,
name, path
)?;
}
Ok(())
}
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