Refactor inner function into closure.

So we can cut some params by using stuff from the environment.
This commit is contained in:
leonardo.yvens 2018-03-26 19:19:25 -03:00
parent b12af86a77
commit 21641d6d2c

View File

@ -2531,16 +2531,12 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
let mut expected_arg_tys = expected_arg_tys;
let expected_arg_count = fn_inputs.len();
fn parameter_count_error<'tcx>(sess: &Session,
sp: Span,
expr_sp: Span,
expected_count: usize,
arg_count: usize,
error_code: &str,
variadic: bool,
def_span: Option<Span>,
sugg_unit: bool) {
let mut err = sess.struct_span_err_with_code(sp,
let param_count_error = |expected_count: usize,
arg_count: usize,
error_code: &str,
variadic: bool,
sugg_unit: bool| {
let mut err = tcx.sess.struct_span_err_with_code(sp,
&format!("this function takes {}{} parameter{} but {} parameter{} supplied",
if variadic {"at least "} else {""},
expected_count,
@ -2549,11 +2545,11 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
if arg_count == 1 {" was"} else {"s were"}),
DiagnosticId::Error(error_code.to_owned()));
if let Some(def_s) = def_span.map(|sp| sess.codemap().def_span(sp)) {
if let Some(def_s) = def_span.map(|sp| tcx.sess.codemap().def_span(sp)) {
err.span_label(def_s, "defined here");
}
if sugg_unit {
let sugg_span = sess.codemap().end_point(expr_sp);
let sugg_span = tcx.sess.codemap().end_point(expr_sp);
// remove closing `)` from the span
let sugg_span = sugg_span.shrink_to_lo();
err.span_suggestion(
@ -2567,14 +2563,13 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
if expected_count == 1 {""} else {"s"}));
}
err.emit();
}
};
let formal_tys = if tuple_arguments == TupleArguments {
let tuple_type = self.structurally_resolved_type(sp, fn_inputs[0]);
match tuple_type.sty {
ty::TyTuple(arg_types) if arg_types.len() != args.len() => {
parameter_count_error(tcx.sess, sp, expr_sp, arg_types.len(), args.len(),
"E0057", false, def_span, false);
param_count_error(arg_types.len(), args.len(), "E0057", false, false);
expected_arg_tys = &[];
self.err_args(args.len())
}
@ -2602,8 +2597,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
if supplied_arg_count >= expected_arg_count {
fn_inputs.to_vec()
} else {
parameter_count_error(tcx.sess, sp, expr_sp, expected_arg_count,
supplied_arg_count, "E0060", true, def_span, false);
param_count_error(expected_arg_count, supplied_arg_count, "E0060", true, false);
expected_arg_tys = &[];
self.err_args(supplied_arg_count)
}
@ -2616,8 +2610,8 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
} else {
false
};
parameter_count_error(tcx.sess, sp, expr_sp, expected_arg_count,
supplied_arg_count, "E0061", false, def_span, sugg_unit);
param_count_error(expected_arg_count, supplied_arg_count, "E0061", false, sugg_unit);
expected_arg_tys = &[];
self.err_args(supplied_arg_count)
};