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// Copyright 2012-2013 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 std::io;
use syntax::ast;
use syntax::print::pp;
use syntax::print::pprust;
use syntax::parse::token;
pub fn each_binding(l: @ast::local, f: @fn(@ast::Path, ast::node_id)) {
use syntax::visit;
let vt = visit::mk_simple_visitor(
@visit::SimpleVisitor {
visit_pat: |pat| {
match pat.node {
ast::pat_ident(_, path, _) => {
f(path, pat.id);
}
_ => {}
}
},
.. *visit::default_simple_visitor()
}
);
(vt.visit_pat)(l.node.pat, ((), vt));
}
/// A utility function that hands off a pretty printer to a callback.
pub fn with_pp(intr: @token::ident_interner,
cb: &fn(@pprust::ps, @io::Writer)) -> ~str {
do io::with_str_writer |writer| {
let pp = pprust::rust_printer(writer, intr);
cb(pp, writer);
pp::eof(pp.s);
}
}
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