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extern crate file;
extern crate itertools;
extern crate walkdir;
use walkdir::WalkDir;
use itertools::Itertools;
use std::path::{Path, PathBuf};
use std::collections::HashSet;
use std::fs;
fn main() {
let verify = ::std::env::args().any(|arg| arg == "--verify");
let d = grammar_dir();
let tests = tests_from_dir(&d);
let existing = existing_tests();
for t in existing.difference(&tests) {
panic!("Test is deleted: {}\n{}", t.name, t.text);
}
let new_tests = tests.difference(&existing);
for (i, t) in new_tests.enumerate() {
if verify {
panic!("Inline test is not recorded: {}", t.name);
}
let name = format!("{:04}_{}.rs", existing.len() + i + 1, t.name);
println!("Creating {}", name);
let path = inline_tests_dir().join(name);
file::put_text(&path, &t.text).unwrap();
}
}
#[derive(Debug, Eq)]
struct Test {
name: String,
text: String,
}
impl PartialEq for Test {
fn eq(&self, other: &Test) -> bool {
self.name.eq(&other.name)
}
}
impl ::std::hash::Hash for Test {
fn hash<H: ::std::hash::Hasher>(&self, state: &mut H) {
self.name.hash(state)
}
}
fn tests_from_dir(dir: &Path) -> HashSet<Test> {
let mut res = HashSet::new();
for entry in WalkDir::new(dir) {
let entry = entry.unwrap();
if !entry.file_type().is_file() {
continue;
}
if entry.path().extension().unwrap_or_default() != "rs" {
continue;
}
let text = file::get_text(entry.path()).unwrap();
for test in collect_tests(&text) {
if let Some(old_test) = res.replace(test) {
panic!("Duplicate test: {}", old_test.name)
}
}
}
res
}
fn collect_tests(s: &str) -> Vec<Test> {
let mut res = vec![];
let prefix = "// ";
let comment_blocks = s.lines()
.map(str::trim_left)
.group_by(|line| line.starts_with(prefix));
'outer: for (is_comment, block) in comment_blocks.into_iter() {
if !is_comment {
continue;
}
let mut block = block.map(|line| &line[prefix.len()..]);
let name = loop {
match block.next() {
Some(line) if line.starts_with("test ") => break line["test ".len()..].to_string(),
Some(_) => (),
None => continue 'outer,
}
};
let text: String = itertools::join(block.chain(::std::iter::once("")), "\n");
assert!(!text.trim().is_empty() && text.ends_with("\n"));
res.push(Test { name, text })
}
res
}
fn existing_tests() -> HashSet<Test> {
let mut res = HashSet::new();
for file in fs::read_dir(&inline_tests_dir()).unwrap() {
let file = file.unwrap();
let path = file.path();
if path.extension().unwrap_or_default() != "rs" {
continue;
}
let name = path.file_name().unwrap().to_str().unwrap();
let name = name["0000_".len()..name.len() - 3].to_string();
let text = file::get_text(&path).unwrap();
res.insert(Test { name, text });
}
res
}
fn inline_tests_dir() -> PathBuf {
let res = base_dir().join("tests/data/parser/inline");
if !res.is_dir() {
fs::create_dir_all(&res).unwrap();
}
res
}
fn grammar_dir() -> PathBuf {
base_dir().join("src/parser/grammar")
}
fn base_dir() -> PathBuf {
let dir = env!("CARGO_MANIFEST_DIR");
PathBuf::from(dir).parent().unwrap().to_owned()
}
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