32 lines
1.2 KiB
Rust
32 lines
1.2 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;
|
|
|
|
use config::Config;
|
|
|
|
pub trait Rewrite {
|
|
/// Rewrite self into offset and width.
|
|
/// `offset` is the indentation of the first line. The next lines
|
|
/// should begin with a least `offset` spaces (except backwards
|
|
/// indentation). The first line should not begin with indentation.
|
|
/// `width` is the maximum number of characters on the last line
|
|
/// (excluding offset). The width of other lines is not limited by
|
|
/// `width`.
|
|
fn rewrite(&self, context: &RewriteContext, width: usize, offset: usize) -> Option<String>;
|
|
}
|
|
|
|
pub struct RewriteContext<'a> {
|
|
pub codemap: &'a CodeMap,
|
|
pub config: &'a Config,
|
|
}
|