250 lines
9.1 KiB
Rust
250 lines
9.1 KiB
Rust
// Copyright 2012 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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// Searching for information from the cstore
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use core::prelude::*;
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use metadata::common::*;
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use metadata::cstore;
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use metadata::decoder;
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use metadata;
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use middle::{ty, resolve};
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use core::vec;
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use reader = extra::ebml::reader;
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use syntax::ast;
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use syntax::ast_map;
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use syntax::diagnostic::expect;
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pub struct ProvidedTraitMethodInfo {
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ty: ty::Method,
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def_id: ast::def_id
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}
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pub struct StaticMethodInfo {
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ident: ast::ident,
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def_id: ast::def_id,
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purity: ast::purity
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}
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pub fn get_symbol(cstore: @mut cstore::CStore, def: ast::def_id) -> ~str {
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let cdata = cstore::get_crate_data(cstore, def.crate).data;
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return decoder::get_symbol(cdata, def.node);
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}
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pub fn get_type_param_count(cstore: @mut cstore::CStore, def: ast::def_id)
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-> uint {
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let cdata = cstore::get_crate_data(cstore, def.crate).data;
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return decoder::get_type_param_count(cdata, def.node);
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}
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/// Iterates over all the language items in the given crate.
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pub fn each_lang_item(cstore: @mut cstore::CStore,
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cnum: ast::crate_num,
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f: &fn(ast::node_id, uint) -> bool) -> bool {
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let crate_data = cstore::get_crate_data(cstore, cnum);
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decoder::each_lang_item(crate_data, f)
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}
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/// Iterates over all the paths in the given crate.
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pub fn each_path(cstore: @mut cstore::CStore,
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cnum: ast::crate_num,
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f: &fn(&str, decoder::def_like, ast::visibility) -> bool)
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-> bool {
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let crate_data = cstore::get_crate_data(cstore, cnum);
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let get_crate_data: decoder::GetCrateDataCb = |cnum| {
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cstore::get_crate_data(cstore, cnum)
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};
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decoder::each_path(cstore.intr, crate_data, get_crate_data, f)
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}
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pub fn get_item_path(tcx: ty::ctxt, def: ast::def_id) -> ast_map::path {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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let path = decoder::get_item_path(cdata, def.node);
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// FIXME #1920: This path is not always correct if the crate is not linked
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// into the root namespace.
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vec::append(~[ast_map::path_mod(tcx.sess.ident_of(
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*cdata.name))], path)
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}
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pub enum found_ast {
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found(ast::inlined_item),
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found_parent(ast::def_id, ast::inlined_item),
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not_found,
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}
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// Finds the AST for this item in the crate metadata, if any. If the item was
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// not marked for inlining, then the AST will not be present and hence none
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// will be returned.
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pub fn maybe_get_item_ast(tcx: ty::ctxt, def: ast::def_id,
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decode_inlined_item: decoder::decode_inlined_item)
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-> found_ast {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::maybe_get_item_ast(cdata, tcx, def.node,
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decode_inlined_item)
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}
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pub fn get_enum_variants(tcx: ty::ctxt, def: ast::def_id)
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-> ~[ty::VariantInfo] {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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return decoder::get_enum_variants(cstore.intr, cdata, def.node, tcx)
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}
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pub fn get_impls_for_mod(cstore: @mut cstore::CStore, def: ast::def_id,
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name: Option<ast::ident>)
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-> @~[@resolve::Impl] {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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do decoder::get_impls_for_mod(cstore.intr, cdata, def.node, name) |cnum| {
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cstore::get_crate_data(cstore, cnum)
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}
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}
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pub fn get_method(tcx: ty::ctxt,
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def: ast::def_id) -> ty::Method
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{
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let cdata = cstore::get_crate_data(tcx.cstore, def.crate);
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decoder::get_method(tcx.cstore.intr, cdata, def.node, tcx)
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}
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pub fn get_method_name_and_explicit_self(cstore: @mut cstore::CStore,
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def: ast::def_id)
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-> (ast::ident, ast::explicit_self_)
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{
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_method_name_and_explicit_self(cstore.intr, cdata, def.node)
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}
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pub fn get_trait_method_def_ids(cstore: @mut cstore::CStore,
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def: ast::def_id) -> ~[ast::def_id] {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_trait_method_def_ids(cdata, def.node)
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}
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pub fn get_provided_trait_methods(tcx: ty::ctxt,
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def: ast::def_id)
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-> ~[ProvidedTraitMethodInfo] {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_provided_trait_methods(cstore.intr, cdata, def.node, tcx)
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}
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pub fn get_supertraits(tcx: ty::ctxt, def: ast::def_id) -> ~[@ty::TraitRef] {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_supertraits(cdata, def.node, tcx)
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}
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pub fn get_type_name_if_impl(cstore: @mut cstore::CStore, def: ast::def_id)
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-> Option<ast::ident> {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_type_name_if_impl(cdata, def.node)
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}
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pub fn get_static_methods_if_impl(cstore: @mut cstore::CStore,
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def: ast::def_id)
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-> Option<~[StaticMethodInfo]> {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_static_methods_if_impl(cstore.intr, cdata, def.node)
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}
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pub fn get_item_attrs(cstore: @mut cstore::CStore,
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def_id: ast::def_id,
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f: &fn(~[@ast::meta_item])) {
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let cdata = cstore::get_crate_data(cstore, def_id.crate);
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decoder::get_item_attrs(cdata, def_id.node, f)
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}
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pub fn get_struct_fields(cstore: @mut cstore::CStore,
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def: ast::def_id)
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-> ~[ty::field_ty] {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_struct_fields(cstore.intr, cdata, def.node)
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}
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pub fn get_type(tcx: ty::ctxt,
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def: ast::def_id)
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-> ty::ty_param_bounds_and_ty {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_type(cdata, def.node, tcx)
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}
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pub fn get_trait_def(tcx: ty::ctxt, def: ast::def_id) -> ty::TraitDef {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_trait_def(cdata, def.node, tcx)
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}
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pub fn get_region_param(cstore: @mut metadata::cstore::CStore,
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def: ast::def_id) -> Option<ty::region_variance> {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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return decoder::get_region_param(cdata, def.node);
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}
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pub fn get_field_type(tcx: ty::ctxt, class_id: ast::def_id,
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def: ast::def_id) -> ty::ty_param_bounds_and_ty {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, class_id.crate);
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let all_items = reader::get_doc(reader::Doc(cdata.data), tag_items);
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debug!("Looking up %?", class_id);
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let class_doc = expect(tcx.diag,
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decoder::maybe_find_item(class_id.node, all_items),
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|| fmt!("get_field_type: class ID %? not found",
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class_id) );
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debug!("looking up %? : %?", def, class_doc);
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let the_field = expect(tcx.diag,
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decoder::maybe_find_item(def.node, class_doc),
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|| fmt!("get_field_type: in class %?, field ID %? not found",
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class_id, def) );
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debug!("got field data %?", the_field);
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let ty = decoder::item_type(def, the_field, tcx, cdata);
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ty::ty_param_bounds_and_ty {
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generics: ty::Generics {type_param_defs: @~[],
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region_param: None},
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ty: ty
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}
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}
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// Given a def_id for an impl, return the trait it implements,
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// if there is one.
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pub fn get_impl_trait(tcx: ty::ctxt,
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def: ast::def_id) -> Option<@ty::TraitRef> {
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let cstore = tcx.cstore;
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_impl_trait(cdata, def.node, tcx)
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}
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pub fn get_impl_method(cstore: @mut cstore::CStore,
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def: ast::def_id,
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mname: ast::ident)
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-> ast::def_id {
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let cdata = cstore::get_crate_data(cstore, def.crate);
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decoder::get_impl_method(cstore.intr, cdata, def.node, mname)
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}
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pub fn get_item_visibility(cstore: @mut cstore::CStore,
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def_id: ast::def_id)
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-> ast::visibility {
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let cdata = cstore::get_crate_data(cstore, def_id.crate);
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decoder::get_item_visibility(cdata, def_id.node)
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}
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pub fn get_link_args_for_crate(cstore: @mut cstore::CStore,
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crate_num: ast::crate_num)
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-> ~[~str] {
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let cdata = cstore::get_crate_data(cstore, crate_num);
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decoder::get_link_args_for_crate(cdata)
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}
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