36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
// Copyright 2015 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.
|
|
|
|
// A generic trait to abstract the rewriting of an element (of the AST).
|
|
|
|
use syntax::codemap::{CodeMap, Span};
|
|
use syntax::parse::ParseSess;
|
|
|
|
use Shape;
|
|
use config::Config;
|
|
|
|
pub trait Rewrite {
|
|
/// Rewrite self into shape.
|
|
fn rewrite(&self, context: &RewriteContext, shape: Shape) -> Option<String>;
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
pub struct RewriteContext<'a> {
|
|
pub parse_session: &'a ParseSess,
|
|
pub codemap: &'a CodeMap,
|
|
pub config: &'a Config,
|
|
}
|
|
|
|
impl<'a> RewriteContext<'a> {
|
|
pub fn snippet(&self, span: Span) -> String {
|
|
self.codemap.span_to_snippet(span).unwrap()
|
|
}
|
|
}
|