use syntax_pos::Span;
use parse::parser;
#[derive(Copy, Clone, PartialEq, Eq, Hash)]
pub enum ObsoleteSyntax {
}
pub trait ParserObsoleteMethods {
fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax);
fn report(&mut self,
sp: Span,
kind: ObsoleteSyntax,
kind_str: &str,
desc: &str,
error: bool);
}
impl<'a> ParserObsoleteMethods for parser::Parser<'a> {
#[allow(unused_variables)]
#[allow(unreachable_code)]
fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax) {
let (kind_str, desc, error) = match kind {
};
self.report(sp, kind, kind_str, desc, error);
}
fn report(&mut self,
sp: Span,
kind: ObsoleteSyntax,
kind_str: &str,
desc: &str,
error: bool) {
let mut err = if error {
self.diagnostic().struct_span_err(sp, &format!("obsolete syntax: {}", kind_str))
} else {
self.diagnostic().struct_span_warn(sp, &format!("obsolete syntax: {}", kind_str))
};
if !self.obsolete_set.contains(&kind) &&
(error || self.sess.span_diagnostic.flags.can_emit_warnings) {
err.note(desc);
self.obsolete_set.insert(kind);
}
err.emit();
}
}