use syntax::parse::token::{self, special_names, special_idents};
use syntax::ptr::P;
use syntax::codemap::{self, Span, Pos};
-use syntax::util::lev_distance::lev_distance;
+use syntax::util::lev_distance::{lev_distance, max_suggestion_distance};
use rustc_front::intravisit::{self, FnKind, Visitor};
use rustc_front::hir;
}
}
- // As a loose rule to avoid obviously incorrect suggestions, clamp the
- // maximum edit distance we will accept for a suggestion to one third of
- // the typo'd name's length.
- let max_distance = std::cmp::max(name.len(), 3) / 3;
-
+ let max_distance = max_suggestion_distance(name);
if !values.is_empty() && values[smallest] <= max_distance && name != &maybes[smallest][..] {
SuggestionType::Function(maybes[smallest].to_string())
use parse::token::{InternedString, intern, str_to_ident};
use ptr::P;
use util::small_vector::SmallVector;
-use util::lev_distance::lev_distance;
+use util::lev_distance::{lev_distance, max_suggestion_distance};
use ext::mtwt;
use fold::Folder;
}
pub fn suggest_macro_name(&mut self, name: &str, span: Span) {
- use std::cmp::max;
-
let mut min: Option<(Name, usize)> = None;
- let max_dist = max(name.len() / 3, 1);
+ let max_dist = max_suggestion_distance(name);
for macro_name in self.syntax_env.names.iter() {
let dist = lev_distance(name, ¯o_name.as_str());
if dist <= max_dist && (min.is_none() || min.unwrap().1 > dist) {
dcol[t_last + 1]
}
+pub fn max_suggestion_distance(name: &str) -> usize {
+ use std::cmp::max;
+ // As a loose rule to avoid obviously incorrect suggestions, clamp the
+ // maximum edit distance we will accept for a suggestion to one third of
+ // the typo'd name's length.
+ max(name.len(), 3) / 3
+}
+
#[test]
fn test_lev_distance() {
use std::char::{ from_u32, MAX };