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extern crate clap;
#[macro_use]
extern crate failure;
extern crate ron;
extern crate tera;
extern crate tools;
extern crate walkdir;
#[macro_use]
extern crate commandspec;
use clap::{App, Arg, SubCommand};
use std::{
collections::HashMap,
fs,
path::{Path, PathBuf},
};
use tools::{collect_tests, Test};
type Result<T> = ::std::result::Result<T, failure::Error>;
const GRAMMAR_DIR: &str = "./crates/libsyntax2/src/grammar";
const INLINE_TESTS_DIR: &str = "./crates/libsyntax2/tests/data/parser/inline";
const GRAMMAR: &str = "./crates/libsyntax2/src/grammar.ron";
const SYNTAX_KINDS: &str = "./crates/libsyntax2/src/syntax_kinds/generated.rs";
const SYNTAX_KINDS_TEMPLATE: &str = "./crates/libsyntax2/src/syntax_kinds/generated.rs.tera";
const AST: &str = "./crates/libsyntax2/src/ast/generated.rs";
const AST_TEMPLATE: &str = "./crates/libsyntax2/src/ast/generated.rs.tera";
fn main() -> Result<()> {
let matches = App::new("tasks")
.setting(clap::AppSettings::SubcommandRequiredElseHelp)
.arg(
Arg::with_name("verify")
.long("--verify")
.help("Verify that generated code is up-to-date")
.global(true),
)
.subcommand(SubCommand::with_name("gen-kinds"))
.subcommand(SubCommand::with_name("gen-tests"))
.subcommand(SubCommand::with_name("install-code"))
.get_matches();
match matches.subcommand() {
("install-code", _) => install_code_extension()?,
(name, Some(matches)) => run_gen_command(name, matches.is_present("verify"))?,
_ => unreachable!(),
}
Ok(())
}
fn run_gen_command(name: &str, verify: bool) -> Result<()> {
match name {
"gen-kinds" => {
update(Path::new(SYNTAX_KINDS), &render_template(SYNTAX_KINDS_TEMPLATE)?, verify)?;
update(Path::new(AST), &render_template(AST_TEMPLATE)?, verify)?;
},
"gen-tests" => {
gen_tests(verify)?
},
_ => unreachable!(),
}
Ok(())
}
fn update(path: &Path, contents: &str, verify: bool) -> Result<()> {
match fs::read_to_string(path) {
Ok(ref old_contents) if old_contents == contents => {
return Ok(());
}
_ => (),
}
if verify {
bail!("`{}` is not up-to-date", path.display());
}
eprintln!("updating {}", path.display());
fs::write(path, contents)?;
Ok(())
}
fn render_template(template: &str) -> Result<String> {
let grammar: ron::value::Value = {
let text = fs::read_to_string(GRAMMAR)?;
ron::de::from_str(&text)?
};
let template = fs::read_to_string(template)?;
let mut tera = tera::Tera::default();
tera.add_raw_template("grammar", &template)
.map_err(|e| format_err!("template error: {:?}", e))?;
tera.register_global_function("concat", Box::new(concat));
tera.register_filter("camel", |arg, _| {
Ok(arg.as_str().unwrap()
.split("_")
.flat_map(|word| {
word.chars()
.next().unwrap()
.to_uppercase()
.chain(
word.chars().skip(1).flat_map(|c| c.to_lowercase())
)
})
.collect::<String>()
.into())
});
let ret = tera
.render("grammar", &grammar)
.map_err(|e| format_err!("template error: {:?}", e))?;
return Ok(ret);
fn concat(args: HashMap<String, tera::Value>) -> tera::Result<tera::Value> {
let mut elements = Vec::new();
for &key in ["a", "b", "c"].iter() {
let val = match args.get(key) {
Some(val) => val,
None => continue,
};
let val = val.as_array().unwrap();
elements.extend(val.iter().cloned());
}
Ok(tera::Value::Array(elements))
}
}
fn gen_tests(verify: bool) -> Result<()> {
let tests = tests_from_dir(Path::new(GRAMMAR_DIR))?;
let inline_tests_dir = Path::new(INLINE_TESTS_DIR);
if !inline_tests_dir.is_dir() {
fs::create_dir_all(inline_tests_dir)?;
}
let existing = existing_tests(inline_tests_dir)?;
for t in existing.keys().filter(|&t| !tests.contains_key(t)) {
panic!("Test is deleted: {}", t);
}
let mut new_idx = existing.len() + 2;
for (name, test) in tests {
let path = match existing.get(&name) {
Some((path, _test)) => path.clone(),
None => {
let file_name = format!("{:04}_{}.rs", new_idx, name);
new_idx += 1;
inline_tests_dir.join(file_name)
}
};
update(&path, &test.text, verify)?;
}
Ok(())
}
fn tests_from_dir(dir: &Path) -> Result<HashMap<String, Test>> {
let mut res = HashMap::new();
for entry in ::walkdir::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 = fs::read_to_string(entry.path())?;
for (_, test) in collect_tests(&text) {
if let Some(old_test) = res.insert(test.name.clone(), test) {
bail!("Duplicate test: {}", old_test.name)
}
}
}
Ok(res)
}
fn existing_tests(dir: &Path) -> Result<HashMap<String, (PathBuf, Test)>> {
let mut res = HashMap::new();
for file in fs::read_dir(dir)? {
let file = file?;
let path = file.path();
if path.extension().unwrap_or_default() != "rs" {
continue;
}
let name = {
let file_name = path.file_name().unwrap().to_str().unwrap();
file_name[5..file_name.len() - 3].to_string()
};
let text = fs::read_to_string(&path)?;
let test = Test {
name: name.clone(),
text,
};
match res.insert(name, (path, test)) {
Some(old) => println!("Duplicate test: {:?}", old),
None => (),
}
}
Ok(res)
}
fn install_code_extension() -> Result<()> {
execute!(
r"
cd code
npm install
"
)?;
execute!(
r"
cd code
./node_modules/vsce/out/vsce package
"
)?;
execute!(
r"
cd code
code --install-extension ./libsyntax-rust-0.0.1.vsix
"
)?;
Ok(())
}
|
