rust/src/librustc/front/show_span.rs

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2014-02-07 04:50:07 -06:00
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use syntax::ast;
use syntax::visit;
use syntax::visit::Visitor;
use driver::session::Session;
struct ShowSpanVisitor {
sess: Session
}
impl Visitor<()> for ShowSpanVisitor {
fn visit_expr(&mut self, e: &ast::Expr, _: ()) {
self.sess.span_note(e.span, "expression");
visit::walk_expr(self, e, ());
}
}
pub fn run(sess: Session, crate: &ast::Crate) {
let mut v = ShowSpanVisitor { sess: sess };
visit::walk_crate(&mut v, crate, ());
}