/
csearch.rs
351 lines (307 loc) · 12.8 KB
/
csearch.rs
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// Copyright 2012-2014 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.
// Searching for information from the cstore
#![allow(non_camel_case_types)]
use metadata::common::*;
use metadata::cstore;
use metadata::decoder;
use middle::lang_items;
use middle::resolve;
use middle::ty;
use middle::typeck;
use middle::subst::VecPerParamSpace;
use rbml;
use rbml::reader;
use std::rc::Rc;
use syntax::ast;
use syntax::ast_map;
use syntax::attr;
use syntax::diagnostic::expect;
use syntax::parse::token;
use std::collections::hashmap::HashMap;
pub struct StaticMethodInfo {
pub ident: ast::Ident,
pub def_id: ast::DefId,
pub fn_style: ast::FnStyle,
pub vis: ast::Visibility,
}
pub fn get_symbol(cstore: &cstore::CStore, def: ast::DefId) -> String {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_symbol(cdata.data(), def.node)
}
/// Iterates over all the language items in the given crate.
pub fn each_lang_item(cstore: &cstore::CStore,
cnum: ast::CrateNum,
f: |ast::NodeId, uint| -> bool)
-> bool {
let crate_data = cstore.get_crate_data(cnum);
decoder::each_lang_item(&*crate_data, f)
}
/// Iterates over each child of the given item.
pub fn each_child_of_item(cstore: &cstore::CStore,
def_id: ast::DefId,
callback: |decoder::DefLike,
ast::Ident,
ast::Visibility|) {
let crate_data = cstore.get_crate_data(def_id.krate);
let get_crate_data: decoder::GetCrateDataCb = |cnum| {
cstore.get_crate_data(cnum)
};
decoder::each_child_of_item(cstore.intr.clone(),
&*crate_data,
def_id.node,
get_crate_data,
callback)
}
/// Iterates over each top-level crate item.
pub fn each_top_level_item_of_crate(cstore: &cstore::CStore,
cnum: ast::CrateNum,
callback: |decoder::DefLike,
ast::Ident,
ast::Visibility|) {
let crate_data = cstore.get_crate_data(cnum);
let get_crate_data: decoder::GetCrateDataCb = |cnum| {
cstore.get_crate_data(cnum)
};
decoder::each_top_level_item_of_crate(cstore.intr.clone(),
&*crate_data,
get_crate_data,
callback)
}
pub fn get_item_path(tcx: &ty::ctxt, def: ast::DefId) -> Vec<ast_map::PathElem> {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
let path = decoder::get_item_path(&*cdata, def.node);
// FIXME #1920: This path is not always correct if the crate is not linked
// into the root namespace.
(vec!(ast_map::PathMod(token::intern(cdata.name.as_slice())))).append(
path.as_slice())
}
pub enum found_ast {
found(ast::InlinedItem),
found_parent(ast::DefId, ast::InlinedItem),
not_found,
}
// Finds the AST for this item in the crate metadata, if any. If the item was
// not marked for inlining, then the AST will not be present and hence none
// will be returned.
pub fn maybe_get_item_ast(tcx: &ty::ctxt, def: ast::DefId,
decode_inlined_item: decoder::DecodeInlinedItem)
-> found_ast {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::maybe_get_item_ast(&*cdata, tcx, def.node, decode_inlined_item)
}
pub fn get_enum_variants(tcx: &ty::ctxt, def: ast::DefId)
-> Vec<Rc<ty::VariantInfo>> {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_enum_variants(cstore.intr.clone(), &*cdata, def.node, tcx)
}
/// Returns information about the given implementation.
pub fn get_impl_items(cstore: &cstore::CStore, impl_def_id: ast::DefId)
-> Vec<ty::ImplOrTraitItemId> {
let cdata = cstore.get_crate_data(impl_def_id.krate);
decoder::get_impl_items(&*cdata, impl_def_id.node)
}
pub fn get_impl_or_trait_item(tcx: &ty::ctxt, def: ast::DefId)
-> ty::ImplOrTraitItem {
let cdata = tcx.sess.cstore.get_crate_data(def.krate);
decoder::get_impl_or_trait_item(tcx.sess.cstore.intr.clone(),
&*cdata,
def.node,
tcx)
}
pub fn get_trait_item_name_and_kind(cstore: &cstore::CStore, def: ast::DefId)
-> (ast::Ident, resolve::TraitItemKind) {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_trait_item_name_and_kind(cstore.intr.clone(),
&*cdata,
def.node)
}
pub fn get_trait_item_def_ids(cstore: &cstore::CStore, def: ast::DefId)
-> Vec<ty::ImplOrTraitItemId> {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_trait_item_def_ids(&*cdata, def.node)
}
pub fn get_item_variances(cstore: &cstore::CStore,
def: ast::DefId) -> ty::ItemVariances {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_item_variances(&*cdata, def.node)
}
pub fn get_provided_trait_methods(tcx: &ty::ctxt,
def: ast::DefId)
-> Vec<Rc<ty::Method>> {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_provided_trait_methods(cstore.intr.clone(), &*cdata, def.node, tcx)
}
pub fn get_supertraits(tcx: &ty::ctxt, def: ast::DefId) -> Vec<Rc<ty::TraitRef>> {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_supertraits(&*cdata, def.node, tcx)
}
pub fn get_type_name_if_impl(cstore: &cstore::CStore, def: ast::DefId)
-> Option<ast::Ident> {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_type_name_if_impl(&*cdata, def.node)
}
pub fn get_static_methods_if_impl(cstore: &cstore::CStore,
def: ast::DefId)
-> Option<Vec<StaticMethodInfo> > {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_static_methods_if_impl(cstore.intr.clone(), &*cdata, def.node)
}
pub fn get_item_attrs(cstore: &cstore::CStore,
def_id: ast::DefId,
f: |Vec<ast::Attribute>|) {
let cdata = cstore.get_crate_data(def_id.krate);
decoder::get_item_attrs(&*cdata, def_id.node, f)
}
pub fn get_struct_fields(cstore: &cstore::CStore,
def: ast::DefId)
-> Vec<ty::field_ty> {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_struct_fields(cstore.intr.clone(), &*cdata, def.node)
}
pub fn get_struct_field_attrs(cstore: &cstore::CStore, def: ast::DefId) -> HashMap<ast::NodeId,
Vec<ast::Attribute>> {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_struct_field_attrs(&*cdata)
}
pub fn get_type(tcx: &ty::ctxt,
def: ast::DefId)
-> ty::Polytype {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_type(&*cdata, def.node, tcx)
}
pub fn get_trait_def(tcx: &ty::ctxt, def: ast::DefId) -> ty::TraitDef {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_trait_def(&*cdata, def.node, tcx)
}
pub fn get_field_type(tcx: &ty::ctxt, class_id: ast::DefId,
def: ast::DefId) -> ty::Polytype {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(class_id.krate);
let all_items = reader::get_doc(rbml::Doc::new(cdata.data()), tag_items);
let class_doc = expect(tcx.sess.diagnostic(),
decoder::maybe_find_item(class_id.node, all_items),
|| {
(format!("get_field_type: class ID {:?} not found",
class_id)).to_string()
});
let the_field = expect(tcx.sess.diagnostic(),
decoder::maybe_find_item(def.node, class_doc),
|| {
(format!("get_field_type: in class {:?}, field ID {:?} not found",
class_id,
def)).to_string()
});
let ty = decoder::item_type(def, the_field, tcx, &*cdata);
ty::Polytype {
generics: ty::Generics {types: VecPerParamSpace::empty(),
regions: VecPerParamSpace::empty()},
ty: ty
}
}
// Given a def_id for an impl, return the trait it implements,
// if there is one.
pub fn get_impl_trait(tcx: &ty::ctxt,
def: ast::DefId) -> Option<Rc<ty::TraitRef>> {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_impl_trait(&*cdata, def.node, tcx)
}
// Given a def_id for an impl, return information about its vtables
pub fn get_impl_vtables(tcx: &ty::ctxt,
def: ast::DefId)
-> typeck::vtable_res {
let cstore = &tcx.sess.cstore;
let cdata = cstore.get_crate_data(def.krate);
decoder::get_impl_vtables(&*cdata, def.node, tcx)
}
pub fn get_native_libraries(cstore: &cstore::CStore,
crate_num: ast::CrateNum)
-> Vec<(cstore::NativeLibaryKind, String)> {
let cdata = cstore.get_crate_data(crate_num);
decoder::get_native_libraries(&*cdata)
}
pub fn each_impl(cstore: &cstore::CStore,
crate_num: ast::CrateNum,
callback: |ast::DefId|) {
let cdata = cstore.get_crate_data(crate_num);
decoder::each_impl(&*cdata, callback)
}
pub fn each_implementation_for_type(cstore: &cstore::CStore,
def_id: ast::DefId,
callback: |ast::DefId|) {
let cdata = cstore.get_crate_data(def_id.krate);
decoder::each_implementation_for_type(&*cdata, def_id.node, callback)
}
pub fn each_implementation_for_trait(cstore: &cstore::CStore,
def_id: ast::DefId,
callback: |ast::DefId|) {
let cdata = cstore.get_crate_data(def_id.krate);
decoder::each_implementation_for_trait(&*cdata, def_id.node, callback)
}
/// If the given def ID describes an item belonging to a trait (either a
/// default method or an implementation of a trait method), returns the ID of
/// the trait that the method belongs to. Otherwise, returns `None`.
pub fn get_trait_of_item(cstore: &cstore::CStore,
def_id: ast::DefId,
tcx: &ty::ctxt)
-> Option<ast::DefId> {
let cdata = cstore.get_crate_data(def_id.krate);
decoder::get_trait_of_item(&*cdata, def_id.node, tcx)
}
pub fn get_tuple_struct_definition_if_ctor(cstore: &cstore::CStore,
def_id: ast::DefId)
-> Option<ast::DefId>
{
let cdata = cstore.get_crate_data(def_id.krate);
decoder::get_tuple_struct_definition_if_ctor(&*cdata, def_id.node)
}
pub fn get_dylib_dependency_formats(cstore: &cstore::CStore,
cnum: ast::CrateNum)
-> Vec<(ast::CrateNum, cstore::LinkagePreference)>
{
let cdata = cstore.get_crate_data(cnum);
decoder::get_dylib_dependency_formats(&*cdata)
}
pub fn get_missing_lang_items(cstore: &cstore::CStore, cnum: ast::CrateNum)
-> Vec<lang_items::LangItem>
{
let cdata = cstore.get_crate_data(cnum);
decoder::get_missing_lang_items(&*cdata)
}
pub fn get_method_arg_names(cstore: &cstore::CStore, did: ast::DefId)
-> Vec<String>
{
let cdata = cstore.get_crate_data(did.krate);
decoder::get_method_arg_names(&*cdata, did.node)
}
pub fn get_reachable_extern_fns(cstore: &cstore::CStore, cnum: ast::CrateNum)
-> Vec<ast::DefId>
{
let cdata = cstore.get_crate_data(cnum);
decoder::get_reachable_extern_fns(&*cdata)
}
pub fn is_typedef(cstore: &cstore::CStore, did: ast::DefId) -> bool {
let cdata = cstore.get_crate_data(did.krate);
decoder::is_typedef(&*cdata, did.node)
}
pub fn get_stability(cstore: &cstore::CStore,
def: ast::DefId)
-> Option<attr::Stability> {
let cdata = cstore.get_crate_data(def.krate);
decoder::get_stability(&*cdata, def.node)
}