458102eefa
This ensures that all external traits are run through the same filters that the rest of the AST goes through, stripping hidden function as necessary. Closes #13698
93 lines
3.7 KiB
Rust
93 lines
3.7 KiB
Rust
// Copyright 2012-2013 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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use clean::*;
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use std::collections::HashMap;
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use std::mem::{replace, swap};
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pub trait DocFolder : Sized {
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fn fold_item(&mut self, item: Item) -> Option<Item> {
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self.fold_item_recur(item)
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}
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/// don't override!
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fn fold_item_recur(&mut self, item: Item) -> Option<Item> {
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let Item { attrs, name, source, visibility, def_id, inner, stability } = item;
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let inner = inner;
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let inner = match inner {
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StructItem(mut i) => {
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let mut foo = Vec::new(); swap(&mut foo, &mut i.fields);
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let num_fields = foo.len();
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i.fields.extend(foo.into_iter().filter_map(|x| self.fold_item(x)));
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i.fields_stripped |= num_fields != i.fields.len();
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StructItem(i)
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},
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ModuleItem(i) => {
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ModuleItem(self.fold_mod(i))
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},
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EnumItem(mut i) => {
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let mut foo = Vec::new(); swap(&mut foo, &mut i.variants);
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let num_variants = foo.len();
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i.variants.extend(foo.into_iter().filter_map(|x| self.fold_item(x)));
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i.variants_stripped |= num_variants != i.variants.len();
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EnumItem(i)
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},
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TraitItem(mut i) => {
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let mut foo = Vec::new(); swap(&mut foo, &mut i.items);
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i.items.extend(foo.into_iter().filter_map(|x| self.fold_item(x)));
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TraitItem(i)
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},
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ImplItem(mut i) => {
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let mut foo = Vec::new(); swap(&mut foo, &mut i.items);
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i.items.extend(foo.into_iter().filter_map(|x| self.fold_item(x)));
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ImplItem(i)
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},
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VariantItem(i) => {
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let i2 = i.clone(); // this clone is small
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match i.kind {
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StructVariant(mut j) => {
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let mut foo = Vec::new(); swap(&mut foo, &mut j.fields);
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let num_fields = foo.len();
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j.fields.extend(foo.into_iter().filter_map(|x| self.fold_item(x)));
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j.fields_stripped |= num_fields != j.fields.len();
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VariantItem(Variant {kind: StructVariant(j), ..i2})
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},
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_ => VariantItem(i2)
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}
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},
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x => x
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};
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Some(Item { attrs: attrs, name: name, source: source, inner: inner,
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visibility: visibility, stability: stability, def_id: def_id })
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}
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fn fold_mod(&mut self, m: Module) -> Module {
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Module {
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is_crate: m.is_crate,
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items: m.items.into_iter().filter_map(|i| self.fold_item(i)).collect()
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}
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}
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fn fold_crate(&mut self, mut c: Crate) -> Crate {
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c.module = match replace(&mut c.module, None) {
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Some(module) => self.fold_item(module), None => None
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};
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let external_traits = replace(&mut c.external_traits, HashMap::new());
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c.external_traits = external_traits.into_iter().map(|(k, mut v)| {
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let items = replace(&mut v.items, Vec::new());
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v.items = items.into_iter().filter_map(|i| self.fold_item(i))
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.collect();
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(k, v)
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}).collect();
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return c;
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}
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}
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