Break up autofix/fixes.rs (#449)

src/ast/helpers.rs

@@ -1,6 +1,6 @@
 use once_cell::sync::Lazy;
 use regex::Regex;
-use rustpython_ast::{Excepthandler, ExcepthandlerKind, Expr, ExprKind, StmtKind};
+use rustpython_ast::{Excepthandler, ExcepthandlerKind, Expr, ExprKind, Location, StmtKind};
 
 use crate::python::typing;
 
@@ -131,3 +131,15 @@ pub fn is_super_call_with_arguments(func: &Expr, args: &[Expr]) -> bool {
  false
  }
 }
+
+/// Convert a location within a file (relative to `base`) to an absolute position.
+pub fn to_absolute(relative: &Location, base: &Location) -> Location {
+ if relative.row() == 1 {
+ Location::new(
+ relative.row() + base.row() - 1,
+ relative.column() + base.column() - 1,
+ )
+ } else {
+ Location::new(relative.row() + base.row() - 1, relative.column())
+ }
+}