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Return TaggedDocsIterator from reader::tagged_docs.

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This commit is contained in:
Ms2ger 2015-05-24 12:23:29 +02:00
parent 8e039a887d
commit 37dd4174d5
2 changed files with 155 additions and 256 deletions
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8
src/librbml/lib.rs
View File

@ -436,13 +436,11 @@ pub mod reader {
}
}
pub fn tagged_docs<F>(d: Doc, tg: usize, it: F) -> bool where
F: FnMut(Doc) -> bool,
{
pub fn tagged_docs<'a>(d: Doc<'a>, tag: usize) -> TaggedDocsIterator<'a> {
TaggedDocsIterator {
iter: docs(d),
tag: tg,
}.all(it)
tag: tag,
}
}
pub struct TaggedDocsIterator<'a> {

403
src/librustc/metadata/decoder.rs
View File

@ -77,19 +77,12 @@ fn lookup_hash<'a, F>(d: rbml::Doc<'a>, mut eq_fn: F, hash: u64) -> Option<rbml:
let pos = u32_from_be_bytes(&d.data[hash_pos..]) as usize;
let tagged_doc = reader::doc_at(d.data, pos).unwrap();
let belt = tag_index_buckets_bucket_elt;
let mut ret = None;
reader::tagged_docs(tagged_doc.doc, belt, |elt| {
reader::tagged_docs(tagged_doc.doc, tag_index_buckets_bucket_elt).find(|elt| {
eq_fn(&elt.data[elt.start + 4 .. elt.end])
}).map(|elt| {
let pos = u32_from_be_bytes(&elt.data[elt.start..]) as usize;
if eq_fn(&elt.data[elt.start + 4 .. elt.end]) {
ret = Some(reader::doc_at(d.data, pos).unwrap().doc);
false
} else {
true
}
});
ret
reader::doc_at(d.data, pos).unwrap().doc
})
}
pub fn maybe_find_item<'a>(item_id: ast::NodeId,
@ -192,12 +185,9 @@ fn fn_constness(item: rbml::Doc) -> ast::Constness {
}
fn item_sort(item: rbml::Doc) -> Option<char> {
let mut ret = None;
reader::tagged_docs(item, tag_item_trait_item_sort, |doc| {
ret = Some(doc.as_str_slice().as_bytes()[0] as char);
false
});
ret
reader::tagged_docs(item, tag_item_trait_item_sort).nth(0).map(|doc| {
doc.as_str_slice().as_bytes()[0] as char
})
}
fn item_symbol(item: rbml::Doc) -> String {
@ -211,12 +201,9 @@ fn translated_def_id(cdata: Cmd, d: rbml::Doc) -> ast::DefId {
}
fn item_parent_item(cdata: Cmd, d: rbml::Doc) -> Option<ast::DefId> {
let mut ret = None;
reader::tagged_docs(d, tag_items_data_parent_item, |did| {
ret = Some(translated_def_id(cdata, did));
false
});
ret
reader::tagged_docs(d, tag_items_data_parent_item).nth(0).map(|did| {
translated_def_id(cdata, did)
})
}
fn item_require_parent_item(cdata: Cmd, d: rbml::Doc) -> ast::DefId {
@ -233,10 +220,16 @@ fn get_provided_source(d: rbml::Doc, cdata: Cmd) -> Option<ast::DefId> {
})
}
fn each_reexport<F>(d: rbml::Doc, f: F) -> bool where
fn each_reexport<F>(d: rbml::Doc, mut f: F) -> bool where
F: FnMut(rbml::Doc) -> bool,
{
reader::tagged_docs(d, tag_items_data_item_reexport, f)
for doc in reader::tagged_docs(d, tag_items_data_item_reexport) {
if !f(doc) {
return false;
}
}
true
}
fn variant_disr_val(d: rbml::Doc) -> Option<ty::Disr> {
@ -278,12 +271,9 @@ fn item_trait_ref<'tcx>(doc: rbml::Doc, tcx: &ty::ctxt<'tcx>, cdata: Cmd)
}
fn enum_variant_ids(item: rbml::Doc, cdata: Cmd) -> Vec<ast::DefId> {
let mut ids = vec![];
reader::tagged_docs(item, tag_items_data_item_variant, |p| {
ids.push(translated_def_id(cdata, p));
true
});
ids
reader::tagged_docs(item, tag_items_data_item_variant)
.map(|p| translated_def_id(cdata, p))
.collect()
}
fn item_path(item_doc: rbml::Doc) -> Vec<ast_map::PathElem> {
@ -400,13 +390,9 @@ fn parse_polarity(item_doc: rbml::Doc) -> ast::ImplPolarity {
fn parse_associated_type_names(item_doc: rbml::Doc) -> Vec<ast::Name> {
let names_doc = reader::get_doc(item_doc, tag_associated_type_names);
let mut names = Vec::new();
reader::tagged_docs(names_doc, tag_associated_type_name, |name_doc| {
let name = token::intern(name_doc.as_str_slice());
names.push(name);
true
});
names
reader::tagged_docs(names_doc, tag_associated_type_name)
.map(|name_doc| token::intern(name_doc.as_str_slice()))
.collect()
}
pub fn get_trait_def<'tcx>(cdata: Cmd,
@ -552,7 +538,7 @@ pub fn each_lang_item<F>(cdata: Cmd, mut f: F) -> bool where
{
let root = rbml::Doc::new(cdata.data());
let lang_items = reader::get_doc(root, tag_lang_items);
reader::tagged_docs(lang_items, tag_lang_items_item, |item_doc| {
reader::tagged_docs(lang_items, tag_lang_items_item).all(|item_doc| {
let id_doc = reader::get_doc(item_doc, tag_lang_items_item_id);
let id = reader::doc_as_u32(id_doc) as usize;
let node_id_doc = reader::get_doc(item_doc,
@ -572,7 +558,7 @@ fn each_child_of_item_or_crate<F, G>(intr: Rc<IdentInterner>,
G: FnMut(ast::CrateNum) -> Rc<crate_metadata>,
{
// Iterate over all children.
let _ = reader::tagged_docs(item_doc, tag_mod_child, |child_info_doc| {
for child_info_doc in reader::tagged_docs(item_doc, tag_mod_child) {
let child_def_id = translated_def_id(cdata, child_info_doc);
// This item may be in yet another crate if it was the child of a
@ -598,26 +584,20 @@ fn each_child_of_item_or_crate<F, G>(intr: Rc<IdentInterner>,
let def_like = item_to_def_like(crate_data, child_item_doc, child_def_id);
let visibility = item_visibility(child_item_doc);
callback(def_like, child_name, visibility);
}
}
true
});
}
// As a special case, iterate over all static methods of
// associated implementations too. This is a bit of a botch.
// --pcwalton
let _ = reader::tagged_docs(item_doc,
tag_items_data_item_inherent_impl,
|inherent_impl_def_id_doc| {
let inherent_impl_def_id = item_def_id(inherent_impl_def_id_doc,
cdata);
for inherent_impl_def_id_doc in reader::tagged_docs(item_doc,
tag_items_data_item_inherent_impl) {
let inherent_impl_def_id = item_def_id(inherent_impl_def_id_doc, cdata);
let items = reader::get_doc(rbml::Doc::new(cdata.data()), tag_items);
if let Some(inherent_impl_doc) = maybe_find_item(inherent_impl_def_id.node, items) {
let _ = reader::tagged_docs(inherent_impl_doc,
tag_item_impl_item,
|impl_item_def_id_doc| {
for impl_item_def_id_doc in reader::tagged_docs(inherent_impl_doc,
tag_item_impl_item) {
let impl_item_def_id = item_def_id(impl_item_def_id_doc,
cdata);
if let Some(impl_method_doc) = maybe_find_item(impl_item_def_id.node, items) {
@ -631,11 +611,9 @@ fn each_child_of_item_or_crate<F, G>(intr: Rc<IdentInterner>,
item_visibility(impl_method_doc));
}
}
true
});
}
}
true
});
}
// Iterate over all reexports.
let _ = each_reexport(item_doc, |reexport_doc| {
@ -847,22 +825,15 @@ fn get_explicit_self(item: rbml::Doc) -> ty::ExplicitSelfCategory {
/// Returns the def IDs of all the items in the given implementation.
pub fn get_impl_items(cdata: Cmd, impl_id: ast::NodeId)
-> Vec<ty::ImplOrTraitItemId> {
let mut impl_items = Vec::new();
reader::tagged_docs(lookup_item(impl_id, cdata.data()),
tag_item_impl_item, |doc| {
reader::tagged_docs(lookup_item(impl_id, cdata.data()), tag_item_impl_item).map(|doc| {
let def_id = item_def_id(doc, cdata);
match item_sort(doc) {
Some('C') => impl_items.push(ty::ConstTraitItemId(def_id)),
Some('r') | Some('p') => {
impl_items.push(ty::MethodTraitItemId(def_id))
}
Some('t') => impl_items.push(ty::TypeTraitItemId(def_id)),
Some('C') => ty::ConstTraitItemId(def_id),
Some('r') | Some('p') => ty::MethodTraitItemId(def_id),
Some('t') => ty::TypeTraitItemId(def_id),
_ => panic!("unknown impl item sort"),
}
true
});
impl_items
}).collect()
}
pub fn get_trait_name(intr: Rc<IdentInterner>,
@ -948,20 +919,15 @@ pub fn get_trait_item_def_ids(cdata: Cmd, id: ast::NodeId)
-> Vec<ty::ImplOrTraitItemId> {
let data = cdata.data();
let item = lookup_item(id, data);
let mut result = Vec::new();
reader::tagged_docs(item, tag_item_trait_item, |mth| {
reader::tagged_docs(item, tag_item_trait_item).map(|mth| {
let def_id = item_def_id(mth, cdata);
match item_sort(mth) {
Some('C') => result.push(ty::ConstTraitItemId(def_id)),
Some('r') | Some('p') => {
result.push(ty::MethodTraitItemId(def_id));
}
Some('t') => result.push(ty::TypeTraitItemId(def_id)),
Some('C') => ty::ConstTraitItemId(def_id),
Some('r') | Some('p') => ty::MethodTraitItemId(def_id),
Some('t') => ty::TypeTraitItemId(def_id),
_ => panic!("unknown trait item sort"),
}
true
});
result
}).collect()
}
pub fn get_item_variances(cdata: Cmd, id: ast::NodeId) -> ty::ItemVariances {
@ -979,9 +945,8 @@ pub fn get_provided_trait_methods<'tcx>(intr: Rc<IdentInterner>,
-> Vec<Rc<ty::Method<'tcx>>> {
let data = cdata.data();
let item = lookup_item(id, data);
let mut result = Vec::new();
reader::tagged_docs(item, tag_item_trait_item, |mth_id| {
reader::tagged_docs(item, tag_item_trait_item).filter_map(|mth_id| {
let did = item_def_id(mth_id, cdata);
let mth = lookup_item(did.node, data);
@ -991,13 +956,14 @@ pub fn get_provided_trait_methods<'tcx>(intr: Rc<IdentInterner>,
did.node,
tcx);
if let ty::MethodTraitItem(ref method) = trait_item {
result.push((*method).clone())
Some((*method).clone())
} else {
None
}
} else {
None
}
true
});
return result;
}).collect()
}
pub fn get_associated_consts<'tcx>(intr: Rc<IdentInterner>,
@ -1007,10 +973,9 @@ pub fn get_associated_consts<'tcx>(intr: Rc<IdentInterner>,
-> Vec<Rc<ty::AssociatedConst<'tcx>>> {
let data = cdata.data();
let item = lookup_item(id, data);
let mut result = Vec::new();
for &tag in &[tag_item_trait_item, tag_item_impl_item] {
reader::tagged_docs(item, tag, |ac_id| {
[tag_item_trait_item, tag_item_impl_item].iter().flat_map(|&tag| {
reader::tagged_docs(item, tag).filter_map(|ac_id| {
let did = item_def_id(ac_id, cdata);
let ac_doc = lookup_item(did.node, data);
@ -1020,14 +985,15 @@ pub fn get_associated_consts<'tcx>(intr: Rc<IdentInterner>,
did.node,
tcx);
if let ty::ConstTraitItem(ref ac) = trait_item {
result.push((*ac).clone())
Some((*ac).clone())
} else {
None
}
} else {
None
}
true
});
}
return result;
})
}).collect()
}
pub fn get_type_name_if_impl(cdata: Cmd,
@ -1037,13 +1003,9 @@ pub fn get_type_name_if_impl(cdata: Cmd,
return None;
}
let mut ret = None;
reader::tagged_docs(item, tag_item_impl_type_basename, |doc| {
ret = Some(token::intern(doc.as_str_slice()));
false
});
ret
reader::tagged_docs(item, tag_item_impl_type_basename).nth(0).map(|doc| {
token::intern(doc.as_str_slice())
})
}
pub fn get_methods_if_impl(intr: Rc<IdentInterner>,
@ -1056,20 +1018,15 @@ pub fn get_methods_if_impl(intr: Rc<IdentInterner>,
}
// If this impl implements a trait, don't consider it.
let ret = reader::tagged_docs(item, tag_item_trait_ref, |_doc| {
false
});
if reader::tagged_docs(item, tag_item_trait_ref).next().is_some() {
return None;
}
if !ret { return None }
let mut impl_method_ids = Vec::new();
reader::tagged_docs(item, tag_item_impl_item, |impl_method_doc| {
impl_method_ids.push(item_def_id(impl_method_doc, cdata));
true
});
let impl_method_ids = reader::tagged_docs(item, tag_item_impl_item)
.map(|impl_method_doc| item_def_id(impl_method_doc, cdata));
let mut impl_methods = Vec::new();
for impl_method_id in &impl_method_ids {
for impl_method_id in impl_method_ids {
let impl_method_doc = lookup_item(impl_method_id.node, cdata.data());
let family = item_family(impl_method_doc);
match family {
@ -1094,12 +1051,9 @@ pub fn get_tuple_struct_definition_if_ctor(cdata: Cmd,
-> Option<ast::DefId>
{
let item = lookup_item(node_id, cdata.data());
let mut ret = None;
reader::tagged_docs(item, tag_items_data_item_is_tuple_struct_ctor, |_| {
ret = Some(item_require_parent_item(cdata, item));
false
});
ret
reader::tagged_docs(item, tag_items_data_item_is_tuple_struct_ctor).next().map(|_| {
item_require_parent_item(cdata, item)
})
}
pub fn get_item_attrs(cdata: Cmd,
@ -1117,14 +1071,11 @@ pub fn get_item_attrs(cdata: Cmd,
pub fn get_struct_field_attrs(cdata: Cmd) -> HashMap<ast::NodeId, Vec<ast::Attribute>> {
let data = rbml::Doc::new(cdata.data());
let fields = reader::get_doc(data, tag_struct_fields);
let mut map = HashMap::new();
reader::tagged_docs(fields, tag_struct_field, |field| {
reader::tagged_docs(fields, tag_struct_field).map(|field| {
let id = reader::doc_as_u32(reader::get_doc(field, tag_struct_field_id));
let attrs = get_attributes(field);
map.insert(id, attrs);
true
});
map
(id, attrs)
}).collect()
}
fn struct_field_family_to_visibility(family: Family) -> ast::Visibility {
@ -1139,81 +1090,69 @@ pub fn get_struct_fields(intr: Rc<IdentInterner>, cdata: Cmd, id: ast::NodeId)
-> Vec<ty::field_ty> {
let data = cdata.data();
let item = lookup_item(id, data);
let mut result = Vec::new();
reader::tagged_docs(item, tag_item_field, |an_item| {
reader::tagged_docs(item, tag_item_field).filter_map(|an_item| {
let f = item_family(an_item);
if f == PublicField || f == InheritedField {
let name = item_name(&*intr, an_item);
let did = item_def_id(an_item, cdata);
let tagdoc = reader::get_doc(an_item, tag_item_field_origin);
let origin_id = translated_def_id(cdata, tagdoc);
result.push(ty::field_ty {
Some(ty::field_ty {
name: name,
id: did,
vis: struct_field_family_to_visibility(f),
origin: origin_id,
});
})
} else {
None
}
true
});
reader::tagged_docs(item, tag_item_unnamed_field, |an_item| {
}).chain(reader::tagged_docs(item, tag_item_unnamed_field).map(|an_item| {
let did = item_def_id(an_item, cdata);
let tagdoc = reader::get_doc(an_item, tag_item_field_origin);
let f = item_family(an_item);
let origin_id = translated_def_id(cdata, tagdoc);
result.push(ty::field_ty {
ty::field_ty {
name: special_idents::unnamed_field.name,
id: did,
vis: struct_field_family_to_visibility(f),
origin: origin_id,
});
true
});
result
}
})).collect()
}
fn get_meta_items(md: rbml::Doc) -> Vec<P<ast::MetaItem>> {
let mut items: Vec<P<ast::MetaItem>> = Vec::new();
reader::tagged_docs(md, tag_meta_item_word, |meta_item_doc| {
reader::tagged_docs(md, tag_meta_item_word).map(|meta_item_doc| {
let nd = reader::get_doc(meta_item_doc, tag_meta_item_name);
let n = token::intern_and_get_ident(nd.as_str_slice());
items.push(attr::mk_word_item(n));
true
});
reader::tagged_docs(md, tag_meta_item_name_value, |meta_item_doc| {
attr::mk_word_item(n)
}).chain(reader::tagged_docs(md, tag_meta_item_name_value).map(|meta_item_doc| {
let nd = reader::get_doc(meta_item_doc, tag_meta_item_name);
let vd = reader::get_doc(meta_item_doc, tag_meta_item_value);
let n = token::intern_and_get_ident(nd.as_str_slice());
let v = token::intern_and_get_ident(vd.as_str_slice());
// FIXME (#623): Should be able to decode MetaNameValue variants,
// but currently the encoder just drops them
items.push(attr::mk_name_value_item_str(n, v));
true
});
reader::tagged_docs(md, tag_meta_item_list, |meta_item_doc| {
attr::mk_name_value_item_str(n, v)
})).chain(reader::tagged_docs(md, tag_meta_item_list).map(|meta_item_doc| {
let nd = reader::get_doc(meta_item_doc, tag_meta_item_name);
let n = token::intern_and_get_ident(nd.as_str_slice());
let subitems = get_meta_items(meta_item_doc);
items.push(attr::mk_list_item(n, subitems.into_iter().collect()));
true
});
return items;
attr::mk_list_item(n, subitems)
})).collect()
}
fn get_attributes(md: rbml::Doc) -> Vec<ast::Attribute> {
let mut attrs: Vec<ast::Attribute> = Vec::new();
match reader::maybe_get_doc(md, tag_attributes) {
Some(attrs_d) => {
reader::tagged_docs(attrs_d, tag_attribute, |attr_doc| {
let is_sugared_doc = reader::doc_as_u8(
reader::get_doc(attr_doc, tag_attribute_is_sugared_doc)
) == 1;
let meta_items = get_meta_items(attr_doc);
// Currently it's only possible to have a single meta item on
// an attribute
assert_eq!(meta_items.len(), 1);
let meta_item = meta_items.into_iter().nth(0).unwrap();
attrs.push(
Some(attrs_d) => {
reader::tagged_docs(attrs_d, tag_attribute).map(|attr_doc| {
let is_sugared_doc = reader::doc_as_u8(
reader::get_doc(attr_doc, tag_attribute_is_sugared_doc)
) == 1;
let meta_items = get_meta_items(attr_doc);
// Currently it's only possible to have a single meta item on
// an attribute
assert_eq!(meta_items.len(), 1);
let meta_item = meta_items.into_iter().nth(0).unwrap();
codemap::Spanned {
node: ast::Attribute_ {
id: attr::mk_attr_id(),
@ -1222,13 +1161,11 @@ fn get_attributes(md: rbml::Doc) -> Vec<ast::Attribute> {
is_sugared_doc: is_sugared_doc,
},
span: codemap::DUMMY_SP
});
true
});
}
None => ()
}
}).collect()
},
None => vec![],
}
return attrs;
}
fn list_crate_attributes(md: rbml::Doc, hash: &Svh,
@ -1255,26 +1192,23 @@ pub struct CrateDep {
}
pub fn get_crate_deps(data: &[u8]) -> Vec<CrateDep> {
let mut deps: Vec<CrateDep> = Vec::new();
let cratedoc = rbml::Doc::new(data);
let depsdoc = reader::get_doc(cratedoc, tag_crate_deps);
let mut crate_num = 1;
fn docstr(doc: rbml::Doc, tag_: usize) -> String {
let d = reader::get_doc(doc, tag_);
d.as_str_slice().to_string()
}
reader::tagged_docs(depsdoc, tag_crate_dep, |depdoc| {
reader::tagged_docs(depsdoc, tag_crate_dep).enumerate().map(|(crate_num, depdoc)| {
let name = docstr(depdoc, tag_crate_dep_crate_name);
let hash = Svh::new(&docstr(depdoc, tag_crate_dep_hash));
deps.push(CrateDep {
cnum: crate_num,
CrateDep {
cnum: crate_num as u32 + 1,
name: name,
hash: hash,
});
crate_num += 1;
true
});
return deps;
}
}).collect()
}
fn list_crate_deps(data: &[u8], out: &mut io::Write) -> io::Result<()> {
@ -1366,14 +1300,11 @@ pub fn each_inherent_implementation_for_type<F>(cdata: Cmd,
where F: FnMut(ast::DefId),
{
let item_doc = lookup_item(id, cdata.data());
reader::tagged_docs(item_doc,
tag_items_data_item_inherent_impl,
|impl_doc| {
for impl_doc in reader::tagged_docs(item_doc, tag_items_data_item_inherent_impl) {
if reader::maybe_get_doc(impl_doc, tag_item_trait_ref).is_none() {
callback(item_def_id(impl_doc, cdata));
}
true
});
}
}
pub fn each_implementation_for_trait<F>(cdata: Cmd,
@ -1383,12 +1314,9 @@ pub fn each_implementation_for_trait<F>(cdata: Cmd,
{
if cdata.cnum == def_id.krate {
let item_doc = lookup_item(def_id.node, cdata.data());
let _ = reader::tagged_docs(item_doc,
tag_items_data_item_extension_impl,
|impl_doc| {
for impl_doc in reader::tagged_docs(item_doc, tag_items_data_item_extension_impl) {
callback(item_def_id(impl_doc, cdata));
true
});
}
return;
}
@ -1398,13 +1326,12 @@ pub fn each_implementation_for_trait<F>(cdata: Cmd,
let def_id_u64 = def_to_u64(crate_local_did);
let impls_doc = reader::get_doc(rbml::Doc::new(cdata.data()), tag_impls);
let _ = reader::tagged_docs(impls_doc, tag_impls_impl, |impl_doc| {
for impl_doc in reader::tagged_docs(impls_doc, tag_impls_impl) {
let impl_trait = reader::get_doc(impl_doc, tag_impls_impl_trait_def_id);
if reader::doc_as_u64(impl_trait) == def_id_u64 {
callback(item_def_id(impl_doc, cdata));
}
true
});
}
}
}
@ -1431,17 +1358,14 @@ pub fn get_native_libraries(cdata: Cmd)
-> Vec<(cstore::NativeLibraryKind, String)> {
let libraries = reader::get_doc(rbml::Doc::new(cdata.data()),
tag_native_libraries);
let mut result = Vec::new();
reader::tagged_docs(libraries, tag_native_libraries_lib, |lib_doc| {
reader::tagged_docs(libraries, tag_native_libraries_lib).map(|lib_doc| {
let kind_doc = reader::get_doc(lib_doc, tag_native_libraries_kind);
let name_doc = reader::get_doc(lib_doc, tag_native_libraries_name);
let kind: cstore::NativeLibraryKind =
cstore::NativeLibraryKind::from_u32(reader::doc_as_u32(kind_doc)).unwrap();
let name = name_doc.as_str().to_string();
result.push((kind, name));
true
});
return result;
(kind, name)
}).collect()
}
pub fn get_plugin_registrar_fn(data: &[u8]) -> Option<ast::NodeId> {
@ -1453,12 +1377,14 @@ pub fn each_exported_macro<F>(data: &[u8], intr: &IdentInterner, mut f: F) where
F: FnMut(ast::Name, Vec<ast::Attribute>, String) -> bool,
{
let macros = reader::get_doc(rbml::Doc::new(data), tag_macro_defs);
reader::tagged_docs(macros, tag_macro_def, |macro_doc| {
for macro_doc in reader::tagged_docs(macros, tag_macro_def) {
let name = item_name(intr, macro_doc);
let attrs = get_attributes(macro_doc);
let body = reader::get_doc(macro_doc, tag_macro_def_body);
f(name, attrs, body.as_str().to_string())
});
if !f(name, attrs, body.as_str().to_string()) {
break;
}
}
}
pub fn get_dylib_dependency_formats(cdata: Cmd)
@ -1491,43 +1417,32 @@ pub fn get_missing_lang_items(cdata: Cmd)
-> Vec<lang_items::LangItem>
{
let items = reader::get_doc(rbml::Doc::new(cdata.data()), tag_lang_items);
let mut result = Vec::new();
reader::tagged_docs(items, tag_lang_items_missing, |missing_docs| {
let item: lang_items::LangItem =
lang_items::LangItem::from_u32(reader::doc_as_u32(missing_docs)).unwrap();
result.push(item);
true
});
return result;
reader::tagged_docs(items, tag_lang_items_missing).map(|missing_docs| {
lang_items::LangItem::from_u32(reader::doc_as_u32(missing_docs)).unwrap()
}).collect()
}
pub fn get_method_arg_names(cdata: Cmd, id: ast::NodeId) -> Vec<String> {
let mut ret = Vec::new();
let method_doc = lookup_item(id, cdata.data());
match reader::maybe_get_doc(method_doc, tag_method_argument_names) {
Some(args_doc) => {
reader::tagged_docs(args_doc, tag_method_argument_name, |name_doc| {
ret.push(name_doc.as_str_slice().to_string());
true
});
}
None => {}
reader::tagged_docs(args_doc, tag_method_argument_name).map(|name_doc| {
name_doc.as_str_slice().to_string()
}).collect()
},
None => vec![],
}
return ret;
}
pub fn get_reachable_extern_fns(cdata: Cmd) -> Vec<ast::DefId> {
let mut ret = Vec::new();
let items = reader::get_doc(rbml::Doc::new(cdata.data()),
tag_reachable_extern_fns);
reader::tagged_docs(items, tag_reachable_extern_fn_id, |doc| {
ret.push(ast::DefId {
reader::tagged_docs(items, tag_reachable_extern_fn_id).map(|doc| {
ast::DefId {
krate: cdata.cnum,
node: reader::doc_as_u32(doc),
});
true
});
return ret;
}
}).collect()
}
pub fn is_typedef(cdata: Cmd, id: ast::NodeId) -> bool {
@ -1555,16 +1470,15 @@ fn doc_generics<'tcx>(base_doc: rbml::Doc,
let doc = reader::get_doc(base_doc, tag);
let mut types = subst::VecPerParamSpace::empty();
reader::tagged_docs(doc, tag_type_param_def, |p| {
for p in reader::tagged_docs(doc, tag_type_param_def) {
let bd = parse_type_param_def_data(
p.data, p.start, cdata.cnum, tcx,
|_, did| translate_def_id(cdata, did));
types.push(bd.space, bd);
true
});
}
let mut regions = subst::VecPerParamSpace::empty();
reader::tagged_docs(doc, tag_region_param_def, |rp_doc| {
for rp_doc in reader::tagged_docs(doc, tag_region_param_def) {
let ident_str_doc = reader::get_doc(rp_doc,
tag_region_param_def_ident);
let name = item_name(&*token::get_ident_interner(), ident_str_doc);
@ -1578,23 +1492,17 @@ fn doc_generics<'tcx>(base_doc: rbml::Doc,
let doc = reader::get_doc(rp_doc, tag_region_param_def_index);
let index = reader::doc_as_u64(doc) as u32;
let mut bounds = Vec::new();
reader::tagged_docs(rp_doc, tag_items_data_region, |p| {
bounds.push(
parse_region_data(
p.data, cdata.cnum, p.start, tcx,
|_, did| translate_def_id(cdata, did)));
true
});
let bounds = reader::tagged_docs(rp_doc, tag_items_data_region).map(|p| {
parse_region_data(p.data, cdata.cnum, p.start, tcx,
|_, did| translate_def_id(cdata, did))
}).collect();
regions.push(space, ty::RegionParameterDef { name: name,
def_id: def_id,
space: space,
index: index,
bounds: bounds });
true
});
}
ty::Generics { types: types, regions: regions }
}
@ -1608,7 +1516,7 @@ fn doc_predicates<'tcx>(base_doc: rbml::Doc,
let doc = reader::get_doc(base_doc, tag);
let mut predicates = subst::VecPerParamSpace::empty();
reader::tagged_docs(doc, tag_predicate, |predicate_doc| {
for predicate_doc in reader::tagged_docs(doc, tag_predicate) {
let space_doc = reader::get_doc(predicate_doc, tag_predicate_space);
let space = subst::ParamSpace::from_uint(reader::doc_as_u8(space_doc) as usize);
@ -1617,8 +1525,7 @@ fn doc_predicates<'tcx>(base_doc: rbml::Doc,
|_, did| translate_def_id(cdata, did));
predicates.push(space, data);
true
});
}
ty::GenericPredicates { predicates: predicates }
}
@ -1647,14 +1554,8 @@ pub fn get_imported_filemaps(metadata: &[u8]) -> Vec<codemap::FileMap> {
let crate_doc = rbml::Doc::new(metadata);
let cm_doc = reader::get_doc(crate_doc, tag_codemap);
let mut filemaps = vec![];
reader::tagged_docs(cm_doc, tag_codemap_filemap, |filemap_doc| {
reader::tagged_docs(cm_doc, tag_codemap_filemap).map(|filemap_doc| {
let mut decoder = reader::Decoder::new(filemap_doc);
let filemap: codemap::FileMap = Decodable::decode(&mut decoder).unwrap();
filemaps.push(filemap);
true
});
return filemaps;
Decodable::decode(&mut decoder).unwrap()
}).collect()
}