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use std::collections::HashSet;
use ra_db::SourceDatabase;
use ra_batch::BatchDatabase;
use ra_hir::{Crate, ModuleDef, Ty, ImplItem};
use ra_syntax::AstNode;
use crate::Result;
pub fn run(verbose: bool) -> Result<()> {
let (db, roots) = BatchDatabase::load_cargo(".")?;
println!("Database loaded, {} roots", roots.len());
let mut num_crates = 0;
let mut visited_modules = HashSet::new();
let mut visit_queue = Vec::new();
for root in roots {
for krate in Crate::source_root_crates(&db, root) {
num_crates += 1;
let module = krate.root_module(&db).expect("crate in source root without root module");
visit_queue.push(module);
}
}
println!("Crates in this dir: {}", num_crates);
let mut num_decls = 0;
let mut funcs = Vec::new();
while let Some(module) = visit_queue.pop() {
if visited_modules.insert(module) {
visit_queue.extend(module.children(&db));
for decl in module.declarations(&db) {
num_decls += 1;
match decl {
ModuleDef::Function(f) => funcs.push(f),
_ => {}
}
}
for impl_block in module.impl_blocks(&db) {
for item in impl_block.items() {
num_decls += 1;
match item {
ImplItem::Method(f) => funcs.push(*f),
_ => {}
}
}
}
}
}
println!("Total modules found: {}", visited_modules.len());
println!("Total declarations: {}", num_decls);
println!("Total functions: {}", funcs.len());
let bar = indicatif::ProgressBar::new(funcs.len() as u64);
bar.tick();
let mut num_exprs = 0;
let mut num_exprs_unknown = 0;
let mut num_exprs_partially_unknown = 0;
for f in funcs {
if verbose {
let (file_id, source) = f.source(&db);
let original_file = file_id.original_file(&db);
let path = db.file_relative_path(original_file);
let syntax_range = source.syntax().range();
let name = f.name(&db);
println!("{} ({:?} {})", name, path, syntax_range);
}
let body = f.body(&db);
let inference_result = f.infer(&db);
for (expr_id, _) in body.exprs() {
let ty = &inference_result[expr_id];
num_exprs += 1;
if let Ty::Unknown = ty {
num_exprs_unknown += 1;
} else {
let mut is_partially_unknown = false;
ty.walk(&mut |ty| {
if let Ty::Unknown = ty {
is_partially_unknown = true;
}
});
if is_partially_unknown {
num_exprs_partially_unknown += 1;
}
}
}
bar.inc(1);
}
bar.finish_and_clear();
println!("Total expressions: {}", num_exprs);
println!(
"Expressions of unknown type: {} ({}%)",
num_exprs_unknown,
(num_exprs_unknown * 100 / num_exprs)
);
println!(
"Expressions of partially unknown type: {} ({}%)",
num_exprs_partially_unknown,
(num_exprs_partially_unknown * 100 / num_exprs)
);
Ok(())
}
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