2015-04-21 21:01:19 +12:00
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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2017-09-06 18:47:50 +09:00
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use std::cmp::Ordering;
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2017-07-13 18:42:14 +09:00
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2017-09-15 22:31:52 +09:00
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use syntax::ast;
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2017-06-06 06:54:22 +02:00
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use syntax::codemap::{BytePos, Span};
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2017-07-13 18:42:14 +09:00
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2017-09-17 15:32:00 +09:00
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use spanned::Spanned;
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2016-05-25 20:41:26 +02:00
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use codemap::SpanUtils;
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2017-09-06 18:47:50 +09:00
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use comment::combine_strs_with_missing_comments;
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2017-07-13 20:40:49 +09:00
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use config::IndentStyle;
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use lists::{definitive_tactic, itemize_list, write_list, DefinitiveListTactic, ListFormatting,
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ListItem, Separator, SeparatorPlace, SeparatorTactic};
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2015-07-17 15:58:47 +02:00
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use rewrite::{Rewrite, RewriteContext};
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use shape::Shape;
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2017-07-13 18:42:14 +09:00
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use types::{rewrite_path, PathContext};
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2017-09-06 18:47:50 +09:00
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use utils::{format_visibility, mk_sp};
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use visitor::{rewrite_extern_crate, FmtVisitor};
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2016-07-26 06:20:01 +01:00
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fn path_of(a: &ast::ViewPath_) -> &ast::Path {
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match *a {
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ast::ViewPath_::ViewPathSimple(_, ref p)
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| ast::ViewPath_::ViewPathGlob(ref p)
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| ast::ViewPath_::ViewPathList(ref p, _) => p,
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2016-07-26 06:20:01 +01:00
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}
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}
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fn compare_path_segments(a: &ast::PathSegment, b: &ast::PathSegment) -> Ordering {
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a.identifier.name.as_str().cmp(&b.identifier.name.as_str())
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}
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fn compare_paths(a: &ast::Path, b: &ast::Path) -> Ordering {
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for segment in a.segments.iter().zip(b.segments.iter()) {
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let ord = compare_path_segments(segment.0, segment.1);
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if ord != Ordering::Equal {
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return ord;
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}
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}
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a.segments.len().cmp(&b.segments.len())
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}
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fn compare_path_list_items(a: &ast::PathListItem, b: &ast::PathListItem) -> Ordering {
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2017-03-28 11:14:47 +13:00
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let a_name_str = &*a.node.name.name.as_str();
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let b_name_str = &*b.node.name.name.as_str();
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let name_ordering = if a_name_str == "self" {
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if b_name_str == "self" {
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Ordering::Equal
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} else {
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Ordering::Less
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}
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} else if b_name_str == "self" {
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Ordering::Greater
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} else {
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a_name_str.cmp(b_name_str)
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};
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if name_ordering == Ordering::Equal {
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match a.node.rename {
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Some(a_rename) => match b.node.rename {
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Some(b_rename) => a_rename.name.as_str().cmp(&b_rename.name.as_str()),
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None => Ordering::Greater,
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},
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None => Ordering::Less,
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}
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} else {
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name_ordering
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}
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}
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2017-06-12 15:58:58 +12:00
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fn compare_path_list_item_lists(
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a_items: &[ast::PathListItem],
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b_items: &[ast::PathListItem],
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) -> Ordering {
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let mut a = a_items.to_owned();
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let mut b = b_items.to_owned();
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a.sort_by(|a, b| compare_path_list_items(a, b));
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b.sort_by(|a, b| compare_path_list_items(a, b));
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for comparison_pair in a.iter().zip(b.iter()) {
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let ord = compare_path_list_items(comparison_pair.0, comparison_pair.1);
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if ord != Ordering::Equal {
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return ord;
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}
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}
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a.len().cmp(&b.len())
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}
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fn compare_view_path_types(a: &ast::ViewPath_, b: &ast::ViewPath_) -> Ordering {
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use syntax::ast::ViewPath_::*;
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match (a, b) {
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2017-10-26 16:53:30 +09:00
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(&ViewPathSimple(..), &ViewPathSimple(..)) | (&ViewPathGlob(_), &ViewPathGlob(_)) => {
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Ordering::Equal
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}
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(&ViewPathSimple(..), _) | (&ViewPathGlob(_), &ViewPathList(..)) => Ordering::Less,
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(&ViewPathList(_, ref a_items), &ViewPathList(_, ref b_items)) => {
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compare_path_list_item_lists(a_items, b_items)
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}
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(&ViewPathGlob(_), &ViewPathSimple(..)) | (&ViewPathList(..), _) => Ordering::Greater,
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}
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}
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fn compare_view_paths(a: &ast::ViewPath_, b: &ast::ViewPath_) -> Ordering {
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match compare_paths(path_of(a), path_of(b)) {
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Ordering::Equal => compare_view_path_types(a, b),
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cmp => cmp,
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}
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}
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2017-08-09 00:16:18 +09:00
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fn compare_use_items(context: &RewriteContext, a: &ast::Item, b: &ast::Item) -> Option<Ordering> {
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2016-07-26 06:20:01 +01:00
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match (&a.node, &b.node) {
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(&ast::ItemKind::Use(ref a_vp), &ast::ItemKind::Use(ref b_vp)) => {
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Some(compare_view_paths(&a_vp.node, &b_vp.node))
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}
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2017-08-09 00:16:18 +09:00
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(&ast::ItemKind::ExternCrate(..), &ast::ItemKind::ExternCrate(..)) => {
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Some(context.snippet(a.span).cmp(&context.snippet(b.span)))
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}
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2016-07-26 06:20:01 +01:00
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_ => None,
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}
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}
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2015-04-21 21:01:19 +12:00
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2015-08-16 15:58:17 +12:00
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// TODO (some day) remove unused imports, expand globs, compress many single
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// imports into a list import.
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2015-04-21 22:50:43 +12:00
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2017-06-12 15:58:58 +12:00
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fn rewrite_view_path_prefix(
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path: &ast::Path,
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context: &RewriteContext,
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shape: Shape,
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) -> Option<String> {
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2017-09-15 12:10:58 +09:00
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let path_str = if path.segments.last().unwrap().identifier.to_string() == "self"
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&& path.segments.len() > 1
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{
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let path = &ast::Path {
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span: path.span,
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segments: path.segments[..path.segments.len() - 1].to_owned(),
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};
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rewrite_path(context, PathContext::Import, None, path, shape)?
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} else {
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rewrite_path(context, PathContext::Import, None, path, shape)?
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};
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Some(path_str)
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}
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2015-07-17 15:58:47 +02:00
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impl Rewrite for ast::ViewPath {
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fn rewrite(&self, context: &RewriteContext, shape: Shape) -> Option<String> {
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match self.node {
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ast::ViewPath_::ViewPathList(ref path, ref path_list) => {
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rewrite_use_list(shape, path, path_list, self.span, context)
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}
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2017-03-08 10:10:56 +13:00
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ast::ViewPath_::ViewPathGlob(ref path) => {
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// 4 = "::*".len()
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let prefix_shape = shape.sub_width(3)?;
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let path_str = rewrite_view_path_prefix(path, context, prefix_shape)?;
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Some(format!("{}::*", path_str))
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}
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2015-07-25 23:10:48 +02:00
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ast::ViewPath_::ViewPathSimple(ident, ref path) => {
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2015-08-14 14:09:19 +02:00
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let ident_str = ident.to_string();
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// 4 = " as ".len()
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let prefix_shape = shape.sub_width(ident_str.len() + 4)?;
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let path_str = rewrite_view_path_prefix(path, context, prefix_shape)?;
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2015-07-25 23:10:48 +02:00
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2017-06-12 16:01:41 +12:00
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Some(if path.segments.last().unwrap().identifier == ident {
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path_str
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} else {
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format!("{} as {}", path_str, ident_str)
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})
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2015-07-17 15:58:47 +02:00
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}
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}
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}
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}
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2017-09-06 18:47:50 +09:00
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// Rewrite `use foo;` WITHOUT attributes.
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fn rewrite_import(
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context: &RewriteContext,
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vis: &ast::Visibility,
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vp: &ast::ViewPath,
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attrs: &[ast::Attribute],
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shape: Shape,
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) -> Option<String> {
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let vis = format_visibility(vis);
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// 4 = `use `, 1 = `;`
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let rw = shape
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.offset_left(vis.len() + 4)
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.and_then(|shape| shape.sub_width(1))
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.and_then(|shape| match vp.node {
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// If we have an empty path list with no attributes, we erase it
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ast::ViewPath_::ViewPathList(_, ref path_list)
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if path_list.is_empty() && attrs.is_empty() =>
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{
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Some("".into())
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}
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_ => vp.rewrite(context, shape),
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});
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match rw {
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Some(ref s) if !s.is_empty() => Some(format!("{}use {};", vis, s)),
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_ => rw,
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}
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}
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fn rewrite_imports(
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context: &RewriteContext,
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use_items: &[&ast::Item],
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shape: Shape,
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span: Span,
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) -> Option<String> {
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let items = itemize_list(
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context.codemap,
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use_items.iter(),
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"",
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|item| item.span().lo(),
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|item| item.span().hi(),
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|item| {
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let attrs_str = item.attrs.rewrite(context, shape)?;
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let missed_span = if item.attrs.is_empty() {
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mk_sp(item.span.lo(), item.span.lo())
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} else {
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mk_sp(item.attrs.last().unwrap().span.hi(), item.span.lo())
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};
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let item_str = match item.node {
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ast::ItemKind::Use(ref vp) => {
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rewrite_import(context, &item.vis, vp, &item.attrs, shape)?
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}
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2017-10-05 20:50:19 +09:00
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ast::ItemKind::ExternCrate(..) => rewrite_extern_crate(context, item)?,
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_ => return None,
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};
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combine_strs_with_missing_comments(
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context,
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&attrs_str,
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&item_str,
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missed_span,
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shape,
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false,
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)
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},
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span.lo(),
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span.hi(),
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false,
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);
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let mut item_pair_vec: Vec<_> = items.zip(use_items.iter()).collect();
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item_pair_vec.sort_by(|a, b| compare_use_items(context, a.1, b.1).unwrap());
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let item_vec: Vec<_> = item_pair_vec.into_iter().map(|pair| pair.0).collect();
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let fmt = ListFormatting {
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tactic: DefinitiveListTactic::Vertical,
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separator: "",
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trailing_separator: SeparatorTactic::Never,
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separator_place: SeparatorPlace::Back,
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shape: shape,
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ends_with_newline: true,
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preserve_newline: false,
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config: context.config,
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};
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write_list(&item_vec, &fmt)
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}
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2016-08-24 21:32:04 +01:00
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2017-09-06 18:47:50 +09:00
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impl<'a> FmtVisitor<'a> {
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pub fn format_imports(&mut self, use_items: &[&ast::Item]) {
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if use_items.is_empty() {
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return;
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2016-07-26 06:20:01 +01:00
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}
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2017-09-06 18:47:50 +09:00
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let lo = use_items.first().unwrap().span().lo();
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let hi = use_items.last().unwrap().span().hi();
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let span = mk_sp(lo, hi);
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let rw = rewrite_imports(&self.get_context(), use_items, self.shape(), span);
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self.push_rewrite(span, rw);
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2016-07-26 06:20:01 +01:00
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}
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2017-09-06 18:47:50 +09:00
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pub fn format_import(&mut self, item: &ast::Item, vp: &ast::ViewPath) {
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let span = item.span;
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let shape = self.shape();
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let rw = rewrite_import(&self.get_context(), &item.vis, vp, &item.attrs, shape);
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2017-07-13 20:40:49 +09:00
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match rw {
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Some(ref s) if s.is_empty() => {
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// Format up to last newline
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let prev_span = mk_sp(self.last_pos, source!(self, span).lo());
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2016-07-26 06:20:01 +01:00
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|
|
let span_end = match self.snippet(prev_span).rfind('\n') {
|
|
|
|
Some(offset) => self.last_pos + BytePos(offset as u32),
|
2017-08-19 21:47:40 +03:00
|
|
|
None => source!(self, span).lo(),
|
2016-07-26 06:20:01 +01:00
|
|
|
};
|
|
|
|
self.format_missing(span_end);
|
2017-08-19 21:47:40 +03:00
|
|
|
self.last_pos = source!(self, span).hi();
|
2016-07-26 06:20:01 +01:00
|
|
|
}
|
|
|
|
Some(ref s) => {
|
2017-08-19 21:47:40 +03:00
|
|
|
self.format_missing_with_indent(source!(self, span).lo());
|
2017-10-26 16:54:41 +09:00
|
|
|
self.buffer.push_str(s);
|
2017-08-19 21:47:40 +03:00
|
|
|
self.last_pos = source!(self, span).hi();
|
2016-07-26 06:20:01 +01:00
|
|
|
}
|
|
|
|
None => {
|
2017-08-19 21:47:40 +03:00
|
|
|
self.format_missing_with_indent(source!(self, span).lo());
|
|
|
|
self.format_missing(source!(self, span).hi());
|
2016-07-26 06:20:01 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-01-19 10:47:07 +13:00
|
|
|
fn rewrite_single_use_list(path_str: String, vpi: &ast::PathListItem) -> String {
|
|
|
|
let mut item_str = vpi.node.name.to_string();
|
|
|
|
if item_str == "self" {
|
|
|
|
item_str = "".to_owned();
|
|
|
|
}
|
|
|
|
let path_item_str = if path_str.is_empty() {
|
|
|
|
if item_str.is_empty() {
|
|
|
|
"self".to_owned()
|
|
|
|
} else {
|
|
|
|
item_str
|
|
|
|
}
|
|
|
|
} else if item_str.is_empty() {
|
|
|
|
path_str
|
|
|
|
} else {
|
|
|
|
format!("{}::{}", path_str, item_str)
|
2015-09-26 18:12:25 +12:00
|
|
|
};
|
|
|
|
append_alias(path_item_str, vpi)
|
|
|
|
}
|
|
|
|
|
2015-10-04 20:20:15 +02:00
|
|
|
fn rewrite_path_item(vpi: &&ast::PathListItem) -> Option<String> {
|
2016-09-16 15:19:18 +12:00
|
|
|
Some(append_alias(vpi.node.name.to_string(), vpi))
|
2015-09-26 18:12:25 +12:00
|
|
|
}
|
|
|
|
|
|
|
|
fn append_alias(path_item_str: String, vpi: &ast::PathListItem) -> String {
|
2016-09-16 15:19:18 +12:00
|
|
|
match vpi.node.rename {
|
|
|
|
Some(rename) => format!("{} as {}", path_item_str, rename),
|
|
|
|
None => path_item_str,
|
2015-05-01 17:27:54 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-07-13 18:36:31 +09:00
|
|
|
#[derive(Eq, PartialEq)]
|
|
|
|
enum ImportItem<'a> {
|
|
|
|
// `self` or `self as a`
|
|
|
|
SelfImport(&'a str),
|
|
|
|
// name_one, name_two, ...
|
|
|
|
SnakeCase(&'a str),
|
|
|
|
// NameOne, NameTwo, ...
|
|
|
|
CamelCase(&'a str),
|
|
|
|
// NAME_ONE, NAME_TWO, ...
|
|
|
|
AllCaps(&'a str),
|
|
|
|
// Failed to format the import item
|
|
|
|
Invalid,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl<'a> ImportItem<'a> {
|
|
|
|
fn from_str(s: &str) -> ImportItem {
|
|
|
|
if s == "self" || s.starts_with("self as") {
|
|
|
|
ImportItem::SelfImport(s)
|
|
|
|
} else if s.chars().all(|c| c.is_lowercase() || c == '_' || c == ' ') {
|
|
|
|
ImportItem::SnakeCase(s)
|
|
|
|
} else if s.chars().all(|c| c.is_uppercase() || c == '_' || c == ' ') {
|
|
|
|
ImportItem::AllCaps(s)
|
|
|
|
} else {
|
|
|
|
ImportItem::CamelCase(s)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn from_opt_str(s: Option<&String>) -> ImportItem {
|
|
|
|
s.map_or(ImportItem::Invalid, |s| ImportItem::from_str(s))
|
|
|
|
}
|
|
|
|
|
|
|
|
fn to_str(&self) -> Option<&str> {
|
|
|
|
match *self {
|
2017-11-16 16:42:07 +09:00
|
|
|
ImportItem::SelfImport(s)
|
|
|
|
| ImportItem::SnakeCase(s)
|
|
|
|
| ImportItem::CamelCase(s)
|
|
|
|
| ImportItem::AllCaps(s) => Some(s),
|
2017-07-13 18:36:31 +09:00
|
|
|
ImportItem::Invalid => None,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn to_u32(&self) -> u32 {
|
|
|
|
match *self {
|
|
|
|
ImportItem::SelfImport(..) => 0,
|
|
|
|
ImportItem::SnakeCase(..) => 1,
|
|
|
|
ImportItem::CamelCase(..) => 2,
|
|
|
|
ImportItem::AllCaps(..) => 3,
|
|
|
|
ImportItem::Invalid => 4,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl<'a> PartialOrd for ImportItem<'a> {
|
|
|
|
fn partial_cmp(&self, other: &ImportItem<'a>) -> Option<Ordering> {
|
|
|
|
Some(self.cmp(other))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl<'a> Ord for ImportItem<'a> {
|
|
|
|
fn cmp(&self, other: &ImportItem<'a>) -> Ordering {
|
|
|
|
let res = self.to_u32().cmp(&other.to_u32());
|
|
|
|
if res != Ordering::Equal {
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
self.to_str().map_or(Ordering::Greater, |self_str| {
|
|
|
|
other
|
|
|
|
.to_str()
|
|
|
|
.map_or(Ordering::Less, |other_str| self_str.cmp(other_str))
|
|
|
|
})
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-09-04 18:09:05 +02:00
|
|
|
// Pretty prints a multi-item import.
|
2017-08-06 23:04:33 -04:00
|
|
|
// If the path list is empty, it leaves the braces empty.
|
2017-07-13 20:40:49 +09:00
|
|
|
fn rewrite_use_list(
|
2017-06-12 15:58:58 +12:00
|
|
|
shape: Shape,
|
|
|
|
path: &ast::Path,
|
|
|
|
path_list: &[ast::PathListItem],
|
|
|
|
span: Span,
|
|
|
|
context: &RewriteContext,
|
|
|
|
) -> Option<String> {
|
2016-06-08 13:00:11 +02:00
|
|
|
// Returns a different option to distinguish `::foo` and `foo`
|
2017-10-05 20:50:19 +09:00
|
|
|
let path_str = rewrite_path(context, PathContext::Import, None, path, shape)?;
|
2015-07-17 15:58:47 +02:00
|
|
|
|
|
|
|
match path_list.len() {
|
2017-08-06 23:04:33 -04:00
|
|
|
0 => {
|
|
|
|
return rewrite_path(context, PathContext::Import, None, path, shape)
|
|
|
|
.map(|path_str| format!("{}::{{}}", path_str));
|
|
|
|
}
|
2017-01-19 10:47:07 +13:00
|
|
|
1 => return Some(rewrite_single_use_list(path_str, &path_list[0])),
|
2015-08-16 15:58:17 +12:00
|
|
|
_ => (),
|
2015-07-17 15:58:47 +02:00
|
|
|
}
|
2015-05-02 19:12:16 +02:00
|
|
|
|
2017-07-13 20:40:49 +09:00
|
|
|
let path_str = if path_str.is_empty() {
|
|
|
|
path_str
|
|
|
|
} else {
|
|
|
|
format!("{}::", path_str)
|
|
|
|
};
|
2017-03-25 22:21:43 -07:00
|
|
|
|
|
|
|
// 2 = "{}"
|
2017-07-13 20:40:49 +09:00
|
|
|
let remaining_width = shape.width.checked_sub(path_str.len() + 2).unwrap_or(0);
|
2015-07-17 15:58:47 +02:00
|
|
|
|
2015-08-19 18:12:05 +02:00
|
|
|
let mut items = {
|
|
|
|
// Dummy value, see explanation below.
|
|
|
|
let mut items = vec![ListItem::from_str("")];
|
2017-06-12 15:58:58 +12:00
|
|
|
let iter = itemize_list(
|
|
|
|
context.codemap,
|
|
|
|
path_list.iter(),
|
|
|
|
"}",
|
2017-08-19 21:47:40 +03:00
|
|
|
|vpi| vpi.span.lo(),
|
|
|
|
|vpi| vpi.span.hi(),
|
2017-06-12 15:58:58 +12:00
|
|
|
rewrite_path_item,
|
|
|
|
context.codemap.span_after(span, "{"),
|
2017-08-19 21:47:40 +03:00
|
|
|
span.hi(),
|
2017-08-07 17:29:55 +09:00
|
|
|
false,
|
2017-06-12 15:58:58 +12:00
|
|
|
);
|
2015-08-19 18:12:05 +02:00
|
|
|
items.extend(iter);
|
|
|
|
items
|
|
|
|
};
|
2015-07-17 15:58:47 +02:00
|
|
|
|
|
|
|
// We prefixed the item list with a dummy value so that we can
|
|
|
|
// potentially move "self" to the front of the vector without touching
|
|
|
|
// the rest of the items.
|
|
|
|
let has_self = move_self_to_front(&mut items);
|
2016-05-29 17:58:38 +02:00
|
|
|
let first_index = if has_self { 0 } else { 1 };
|
2015-05-02 19:12:16 +02:00
|
|
|
|
2017-05-16 15:47:09 +07:00
|
|
|
if context.config.reorder_imported_names() {
|
2017-07-13 18:36:31 +09:00
|
|
|
items[1..].sort_by(|a, b| {
|
|
|
|
let a = ImportItem::from_opt_str(a.item.as_ref());
|
|
|
|
let b = ImportItem::from_opt_str(b.item.as_ref());
|
|
|
|
a.cmp(&b)
|
|
|
|
});
|
2015-07-17 15:58:47 +02:00
|
|
|
}
|
2015-04-21 21:01:19 +12:00
|
|
|
|
2017-06-12 15:58:58 +12:00
|
|
|
let tactic = definitive_tactic(
|
|
|
|
&items[first_index..],
|
2017-07-13 20:40:49 +09:00
|
|
|
context.config.imports_layout(),
|
2017-07-31 16:23:42 +09:00
|
|
|
Separator::Comma,
|
2017-06-12 15:58:58 +12:00
|
|
|
remaining_width,
|
|
|
|
);
|
2017-03-25 22:21:43 -07:00
|
|
|
|
2017-07-13 20:40:49 +09:00
|
|
|
let nested_indent = match context.config.imports_indent() {
|
|
|
|
IndentStyle::Block => shape.indent.block_indent(context.config),
|
|
|
|
// 1 = `{`
|
|
|
|
IndentStyle::Visual => shape.visual_indent(path_str.len() + 1).indent,
|
|
|
|
};
|
|
|
|
|
|
|
|
let nested_shape = match context.config.imports_indent() {
|
|
|
|
IndentStyle::Block => Shape::indented(nested_indent, context.config),
|
|
|
|
IndentStyle::Visual => Shape::legacy(remaining_width, nested_indent),
|
|
|
|
};
|
|
|
|
|
2017-09-15 12:10:58 +09:00
|
|
|
let ends_with_newline = context.config.imports_indent() == IndentStyle::Block
|
|
|
|
&& tactic != DefinitiveListTactic::Horizontal;
|
2017-07-13 20:40:49 +09:00
|
|
|
|
2015-10-02 13:50:24 +02:00
|
|
|
let fmt = ListFormatting {
|
|
|
|
tactic: tactic,
|
|
|
|
separator: ",",
|
2017-07-13 20:40:49 +09:00
|
|
|
trailing_separator: if ends_with_newline {
|
|
|
|
context.config.trailing_comma()
|
|
|
|
} else {
|
|
|
|
SeparatorTactic::Never
|
|
|
|
},
|
2017-08-18 23:19:47 +09:00
|
|
|
separator_place: SeparatorPlace::Back,
|
2017-07-13 20:40:49 +09:00
|
|
|
shape: nested_shape,
|
|
|
|
ends_with_newline: ends_with_newline,
|
2017-07-26 22:43:36 +09:00
|
|
|
preserve_newline: true,
|
2015-10-02 13:50:24 +02:00
|
|
|
config: context.config,
|
|
|
|
};
|
2017-10-05 20:50:19 +09:00
|
|
|
let list_str = write_list(&items[first_index..], &fmt)?;
|
2015-06-26 03:29:54 +02:00
|
|
|
|
2017-07-26 17:43:17 +09:00
|
|
|
let result = if list_str.contains('\n') && context.config.imports_indent() == IndentStyle::Block
|
|
|
|
{
|
|
|
|
format!(
|
|
|
|
"{}{{\n{}{}\n{}}}",
|
|
|
|
path_str,
|
|
|
|
nested_shape.indent.to_string(context.config),
|
|
|
|
list_str,
|
|
|
|
shape.indent.to_string(context.config)
|
|
|
|
)
|
|
|
|
} else {
|
|
|
|
format!("{}{{{}}}", path_str, list_str)
|
|
|
|
};
|
2017-07-13 20:40:49 +09:00
|
|
|
Some(result)
|
2015-04-21 21:01:19 +12:00
|
|
|
}
|
2015-06-26 03:29:54 +02:00
|
|
|
|
|
|
|
// Returns true when self item was found.
|
|
|
|
fn move_self_to_front(items: &mut Vec<ListItem>) -> bool {
|
2017-06-16 08:49:49 +09:00
|
|
|
match items
|
|
|
|
.iter()
|
2017-07-20 00:09:43 +09:00
|
|
|
.position(|item| item.item.as_ref().map(|x| &x[..]) == Some("self"))
|
|
|
|
{
|
2015-06-26 03:29:54 +02:00
|
|
|
Some(pos) => {
|
|
|
|
items[0] = items.remove(pos);
|
|
|
|
true
|
2015-08-16 15:58:17 +12:00
|
|
|
}
|
|
|
|
None => false,
|
2015-06-26 03:29:54 +02:00
|
|
|
}
|
|
|
|
}
|