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|
use std::{fs, path::Path};
use crate::{
codegen::{self, extract_comment_blocks_with_empty_lines, Mode},
project_root, Result,
};
pub fn generate_assists_docs(mode: Mode) -> Result<()> {
let assists = collect_assists()?;
generate_tests(&assists, mode)?;
generate_docs(&assists, mode)?;
Ok(())
}
#[derive(Debug)]
struct Assist {
id: String,
doc: String,
before: String,
after: String,
}
fn collect_assists() -> Result<Vec<Assist>> {
let mut res = Vec::new();
for entry in fs::read_dir(project_root().join(codegen::ASSISTS_DIR))? {
let entry = entry?;
let path = entry.path();
if path.is_file() {
collect_file(&mut res, path.as_path())?;
}
}
res.sort_by(|lhs, rhs| lhs.id.cmp(&rhs.id));
return Ok(res);
fn collect_file(acc: &mut Vec<Assist>, path: &Path) -> Result<()> {
let text = fs::read_to_string(path)?;
let comment_blocks = extract_comment_blocks_with_empty_lines(&text);
for block in comment_blocks {
// FIXME: doesn't support blank lines yet, need to tweak
// `extract_comment_blocks` for that.
let mut lines = block.iter();
let first_line = lines.next().unwrap();
if !first_line.starts_with("Assist: ") {
continue;
}
let id = first_line["Assist: ".len()..].to_string();
assert!(
id.chars().all(|it| it.is_ascii_lowercase() || it == '_'),
"invalid assist id: {:?}",
id
);
let doc = take_until(lines.by_ref(), "```").trim().to_string();
assert!(
doc.chars().next().unwrap().is_ascii_uppercase() && doc.ends_with("."),
"\n\n{}: assist docs should be proper sentences, with capitalization and a full stop at the end.\n\n{}\n\n",
id, doc,
);
let before = take_until(lines.by_ref(), "```");
assert_eq!(lines.next().unwrap().as_str(), "->");
assert_eq!(lines.next().unwrap().as_str(), "```");
let after = take_until(lines.by_ref(), "```");
acc.push(Assist { id, doc, before, after })
}
fn take_until<'a>(lines: impl Iterator<Item = &'a String>, marker: &str) -> String {
let mut buf = Vec::new();
for line in lines {
if line == marker {
break;
}
buf.push(line.clone());
}
buf.join("\n")
}
Ok(())
}
}
fn generate_tests(assists: &[Assist], mode: Mode) -> Result<()> {
let mut buf = String::from("use super::check;\n");
for assist in assists.iter() {
let test = format!(
r######"
#[test]
fn doctest_{}() {{
check(
"{}",
r#####"
{}
"#####, r#####"
{}
"#####)
}}
"######,
assist.id, assist.id, assist.before, assist.after
);
buf.push_str(&test)
}
let buf = codegen::reformat(buf)?;
codegen::update(&project_root().join(codegen::ASSISTS_TESTS), &buf, mode)
}
fn generate_docs(assists: &[Assist], mode: Mode) -> Result<()> {
let mut buf = String::from("# Assists\n");
for assist in assists {
let docs = format!(
"
## `{}`
{}
```rust
// BEFORE
{}
// AFTER
{}
```
",
assist.id, assist.doc, assist.before, assist.after
);
buf.push_str(&docs);
}
codegen::update(&project_root().join(codegen::ASSISTS_DOCS), &buf, mode)
}
|
