Auto merge of #52927 - Mark-Simulacrum:cratestore-cleanup, r=alexcrichton

Crate store cleanup

Each commit mostly stands on its own.

Most of the diff is lifetime-related and uninteresting.

Author: bors

src/Cargo.lock

@@ -2219,6 +2219,7 @@ dependencies = [
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_incremental 0.0.0",
+ "rustc_metadata_utils 0.0.0",
  "rustc_mir 0.0.0",
  "rustc_target 0.0.0",
  "syntax 0.0.0",
@@ -2352,13 +2353,23 @@ dependencies = [
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
+ "rustc_metadata_utils 0.0.0",
  "rustc_target 0.0.0",
  "serialize 0.0.0",
  "syntax 0.0.0",
  "syntax_ext 0.0.0",
  "syntax_pos 0.0.0",
 ]
 
+[[package]]
+name = "rustc_metadata_utils"
+version = "0.0.0"
+dependencies = [
+ "rustc 0.0.0",
+ "syntax 0.0.0",
+ "syntax_pos 0.0.0",
+]
+
 [[package]]
 name = "rustc_mir"
 version = "0.0.0"
@@ -2441,6 +2452,7 @@ dependencies = [
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
+ "rustc_metadata 0.0.0",
  "syntax 0.0.0",
  "syntax_pos 0.0.0",
 ]

src/librustc/middle/cstore.rs

@@ -22,10 +22,9 @@
 //! are *mostly* used as a part of that interface, but these should
 //! probably get a better home if someone can find one.
 
-use hir::def;
 use hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
 use hir::map as hir_map;
-use hir::map::definitions::{Definitions, DefKey, DefPathTable};
+use hir::map::definitions::{DefKey, DefPathTable};
 use hir::svh::Svh;
 use ty::{self, TyCtxt};
 use session::{Session, CrateDisambiguator};
@@ -34,8 +33,6 @@ use session::search_paths::PathKind;
 use std::any::Any;
 use std::path::{Path, PathBuf};
 use syntax::ast;
-use syntax::edition::Edition;
-use syntax::ext::base::SyntaxExtension;
 use syntax::symbol::Symbol;
 use syntax_pos::Span;
 use rustc_target::spec::Target;
@@ -140,11 +137,6 @@ pub struct ForeignModule {
     pub def_id: DefId,
 }
 
-pub enum LoadedMacro {
-    MacroDef(ast::Item),
-    ProcMacro(Lrc<SyntaxExtension>),
-}
-
 #[derive(Copy, Clone, Debug)]
 pub struct ExternCrate {
     pub src: ExternCrateSource,
@@ -221,29 +213,18 @@ pub trait MetadataLoader {
 pub trait CrateStore {
     fn crate_data_as_rc_any(&self, krate: CrateNum) -> Lrc<dyn Any>;
 
-    // access to the metadata loader
-    fn metadata_loader(&self) -> &dyn MetadataLoader;
-
     // resolve
     fn def_key(&self, def: DefId) -> DefKey;
     fn def_path(&self, def: DefId) -> hir_map::DefPath;
     fn def_path_hash(&self, def: DefId) -> hir_map::DefPathHash;
     fn def_path_table(&self, cnum: CrateNum) -> Lrc<DefPathTable>;
 
     // "queries" used in resolve that aren't tracked for incremental compilation
-    fn visibility_untracked(&self, def: DefId) -> ty::Visibility;
-    fn export_macros_untracked(&self, cnum: CrateNum);
-    fn dep_kind_untracked(&self, cnum: CrateNum) -> DepKind;
     fn crate_name_untracked(&self, cnum: CrateNum) -> Symbol;
     fn crate_disambiguator_untracked(&self, cnum: CrateNum) -> CrateDisambiguator;
     fn crate_hash_untracked(&self, cnum: CrateNum) -> Svh;
-    fn crate_edition_untracked(&self, cnum: CrateNum) -> Edition;
-    fn struct_field_names_untracked(&self, def: DefId) -> Vec<ast::Name>;
-    fn item_children_untracked(&self, did: DefId, sess: &Session) -> Vec<def::Export>;
-    fn load_macro_untracked(&self, did: DefId, sess: &Session) -> LoadedMacro;
     fn extern_mod_stmt_cnum_untracked(&self, emod_id: ast::NodeId) -> Option<CrateNum>;
     fn item_generics_cloned_untracked(&self, def: DefId, sess: &Session) -> ty::Generics;
-    fn associated_item_cloned_untracked(&self, def: DefId) -> ty::AssociatedItem;
     fn postorder_cnums_untracked(&self) -> Vec<CrateNum>;
 
     // This is basically a 1-based range of ints, which is a little
@@ -260,116 +241,6 @@ pub trait CrateStore {
 
 pub type CrateStoreDyn = dyn CrateStore + sync::Sync;
 
-// FIXME: find a better place for this?
-pub fn validate_crate_name(sess: Option<&Session>, s: &str, sp: Option<Span>) {
-    let mut err_count = 0;
-    {
-        let mut say = |s: &str| {
-            match (sp, sess) {
-                (_, None) => bug!("{}", s),
-                (Some(sp), Some(sess)) => sess.span_err(sp, s),
-                (None, Some(sess)) => sess.err(s),
-            }
-            err_count += 1;
-        };
-        if s.is_empty() {
-            say("crate name must not be empty");
-        }
-        for c in s.chars() {
-            if c.is_alphanumeric() { continue }
-            if c == '_'  { continue }
-            say(&format!("invalid character `{}` in crate name: `{}`", c, s));
-        }
-    }
-
-    if err_count > 0 {
-        sess.unwrap().abort_if_errors();
-    }
-}
-
-/// A dummy crate store that does not support any non-local crates,
-/// for test purposes.
-pub struct DummyCrateStore;
-
-#[allow(unused_variables)]
-impl CrateStore for DummyCrateStore {
-    fn crate_data_as_rc_any(&self, krate: CrateNum) -> Lrc<dyn Any>
-        { bug!("crate_data_as_rc_any") }
-    // item info
-    fn visibility_untracked(&self, def: DefId) -> ty::Visibility { bug!("visibility") }
-    fn item_generics_cloned_untracked(&self, def: DefId, sess: &Session) -> ty::Generics
-        { bug!("item_generics_cloned") }
-
-    // trait/impl-item info
-    fn associated_item_cloned_untracked(&self, def: DefId) -> ty::AssociatedItem
-        { bug!("associated_item_cloned") }
-
-    // crate metadata
-    fn dep_kind_untracked(&self, cnum: CrateNum) -> DepKind { bug!("is_explicitly_linked") }
-    fn export_macros_untracked(&self, cnum: CrateNum) { bug!("export_macros") }
-    fn crate_name_untracked(&self, cnum: CrateNum) -> Symbol { bug!("crate_name") }
-    fn crate_disambiguator_untracked(&self, cnum: CrateNum) -> CrateDisambiguator {
-        bug!("crate_disambiguator")
-    }
-    fn crate_hash_untracked(&self, cnum: CrateNum) -> Svh { bug!("crate_hash") }
-    fn crate_edition_untracked(&self, cnum: CrateNum) -> Edition { bug!("crate_edition_untracked") }
-
-    // resolve
-    fn def_key(&self, def: DefId) -> DefKey { bug!("def_key") }
-    fn def_path(&self, def: DefId) -> hir_map::DefPath {
-        bug!("relative_def_path")
-    }
-    fn def_path_hash(&self, def: DefId) -> hir_map::DefPathHash {
-        bug!("def_path_hash")
-    }
-    fn def_path_table(&self, cnum: CrateNum) -> Lrc<DefPathTable> {
-        bug!("def_path_table")
-    }
-    fn struct_field_names_untracked(&self, def: DefId) -> Vec<ast::Name> {
-        bug!("struct_field_names")
-    }
-    fn item_children_untracked(&self, did: DefId, sess: &Session) -> Vec<def::Export> {
-        bug!("item_children")
-    }
-    fn load_macro_untracked(&self, did: DefId, sess: &Session) -> LoadedMacro { bug!("load_macro") }
-
-    fn crates_untracked(&self) -> Vec<CrateNum> { vec![] }
-
-    // utility functions
-    fn extern_mod_stmt_cnum_untracked(&self, emod_id: ast::NodeId) -> Option<CrateNum> { None }
-    fn encode_metadata<'a, 'tcx>(&self,
-                                 tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                                 link_meta: &LinkMeta)
-                                 -> EncodedMetadata {
-        bug!("encode_metadata")
-    }
-    fn metadata_encoding_version(&self) -> &[u8] { bug!("metadata_encoding_version") }
-    fn postorder_cnums_untracked(&self) -> Vec<CrateNum> { bug!("postorder_cnums_untracked") }
-
-    // access to the metadata loader
-    fn metadata_loader(&self) -> &dyn MetadataLoader { bug!("metadata_loader") }
-}
-
-pub trait CrateLoader {
-    fn process_extern_crate(&mut self, item: &ast::Item, defs: &Definitions) -> CrateNum;
-
-    fn process_path_extern(
-        &mut self,
-        name: Symbol,
-        span: Span,
-    ) -> CrateNum;
-
-    fn process_use_extern(
-        &mut self,
-        name: Symbol,
-        span: Span,
-        id: ast::NodeId,
-        defs: &Definitions,
-    ) -> CrateNum;
-
-    fn postprocess(&mut self, krate: &ast::Crate);
-}
-
 // This method is used when generating the command line to pass through to
 // system linker. The linker expects undefined symbols on the left of the
 // command line to be defined in libraries on the right, not the other way

src/librustc_codegen_utils/Cargo.toml

@@ -20,3 +20,4 @@ rustc_target = { path = "../librustc_target" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_mir = { path = "../librustc_mir" }
 rustc_incremental = { path = "../librustc_incremental" }
+rustc_metadata_utils = { path = "../librustc_metadata_utils" }

src/librustc_codegen_utils/lib.rs

@@ -37,6 +37,7 @@ extern crate rustc_incremental;
 extern crate syntax;
 extern crate syntax_pos;
 #[macro_use] extern crate rustc_data_structures;
+extern crate rustc_metadata_utils;
 
 use rustc::ty::TyCtxt;
 

src/librustc_codegen_utils/link.rs

@@ -10,11 +10,12 @@
 
 use rustc::session::config::{self, OutputFilenames, Input, OutputType};
 use rustc::session::Session;
-use rustc::middle::cstore::{self, LinkMeta};
+use rustc::middle::cstore::LinkMeta;
 use rustc::hir::svh::Svh;
 use std::path::{Path, PathBuf};
 use syntax::{ast, attr};
 use syntax_pos::Span;
+use rustc_metadata_utils::validate_crate_name;
 
 pub fn out_filename(sess: &Session,
                 crate_type: config::CrateType,
@@ -61,7 +62,7 @@ pub fn find_crate_name(sess: Option<&Session>,
                        attrs: &[ast::Attribute],
                        input: &Input) -> String {
     let validate = |s: String, span: Option<Span>| {
-        cstore::validate_crate_name(sess, &s, span);
+        validate_crate_name(sess, &s, span);
         s
     };
 

src/librustc_driver/driver.rs

@@ -20,7 +20,6 @@ use rustc::session::config::{self, Input, OutputFilenames, OutputType};
 use rustc::session::search_paths::PathKind;
 use rustc::lint;
 use rustc::middle::{self, reachable, resolve_lifetime, stability};
-use rustc::middle::cstore::CrateStoreDyn;
 use rustc::middle::privacy::AccessLevels;
 use rustc::ty::{self, AllArenas, Resolutions, TyCtxt};
 use rustc::traits;
@@ -484,7 +483,7 @@ impl<'a> ::CompilerCalls<'a> for CompileController<'a> {
         codegen_backend: &dyn (::CodegenBackend),
         matches: &::getopts::Matches,
         sess: &Session,
-        cstore: &dyn (::CrateStore),
+        cstore: &CStore,
         input: &Input,
         odir: &Option<PathBuf>,
         ofile: &Option<PathBuf>,
@@ -728,9 +727,9 @@ pub struct ExpansionResult {
     pub hir_forest: hir_map::Forest,
 }
 
-pub struct InnerExpansionResult<'a> {
+pub struct InnerExpansionResult<'a, 'b: 'a> {
     pub expanded_crate: ast::Crate,
-    pub resolver: Resolver<'a>,
+    pub resolver: Resolver<'a, 'b>,
     pub hir_forest: hir_map::Forest,
 }
 
@@ -806,7 +805,7 @@ where
 
 /// Same as phase_2_configure_and_expand, but doesn't let you keep the resolver
 /// around
-pub fn phase_2_configure_and_expand_inner<'a, F>(
+pub fn phase_2_configure_and_expand_inner<'a, 'b: 'a, F>(
     sess: &'a Session,
     cstore: &'a CStore,
     mut krate: ast::Crate,
@@ -815,9 +814,9 @@ pub fn phase_2_configure_and_expand_inner<'a, F>(
     addl_plugins: Option<Vec<String>>,
     make_glob_map: MakeGlobMap,
     resolver_arenas: &'a ResolverArenas<'a>,
-    crate_loader: &'a mut CrateLoader,
+    crate_loader: &'a mut CrateLoader<'b>,
     after_expand: F,
-) -> Result<InnerExpansionResult<'a>, CompileIncomplete>
+) -> Result<InnerExpansionResult<'a, 'b>, CompileIncomplete>
 where
     F: FnOnce(&ast::Crate) -> CompileResult,
 {
@@ -1209,7 +1208,7 @@ pub fn phase_3_run_analysis_passes<'tcx, F, R>(
     codegen_backend: &dyn CodegenBackend,
     control: &CompileController,
     sess: &'tcx Session,
-    cstore: &'tcx CrateStoreDyn,
+    cstore: &'tcx CStore,
     hir_map: hir_map::Map<'tcx>,
     mut analysis: ty::CrateAnalysis,
     resolutions: Resolutions,

src/librustc_driver/lib.rs

@@ -78,7 +78,6 @@ use rustc::session::filesearch;
 use rustc::session::{early_error, early_warn};
 use rustc::lint::Lint;
 use rustc::lint;
-use rustc::middle::cstore::CrateStore;
 use rustc_metadata::locator;
 use rustc_metadata::cstore::CStore;
 use rustc_metadata::dynamic_lib::DynamicLibrary;
@@ -676,7 +675,7 @@ pub trait CompilerCalls<'a> {
                      _: &dyn CodegenBackend,
                      _: &getopts::Matches,
                      _: &Session,
-                     _: &dyn CrateStore,
+                     _: &CStore,
                      _: &Input,
                      _: &Option<PathBuf>,
                      _: &Option<PathBuf>)
@@ -884,7 +883,7 @@ impl<'a> CompilerCalls<'a> for RustcDefaultCalls {
                      codegen_backend: &dyn CodegenBackend,
                      matches: &getopts::Matches,
                      sess: &Session,
-                     cstore: &dyn CrateStore,
+                     cstore: &CStore,
                      input: &Input,
                      odir: &Option<PathBuf>,
                      ofile: &Option<PathBuf>)
@@ -990,7 +989,7 @@ pub fn enable_save_analysis(control: &mut CompileController) {
 
 impl RustcDefaultCalls {
     pub fn list_metadata(sess: &Session,
-                         cstore: &dyn CrateStore,
+                         cstore: &CStore,
                          matches: &getopts::Matches,
                          input: &Input)
                          -> Compilation {
@@ -1002,7 +1001,7 @@ impl RustcDefaultCalls {
                     let mut v = Vec::new();
                     locator::list_file_metadata(&sess.target.target,
                                                 path,
-                                                cstore.metadata_loader(),
+                                                &*cstore.metadata_loader,
                                                 &mut v)
                             .unwrap();
                     println!("{}", String::from_utf8(v).unwrap());

src/librustc_driver/pretty.rs

@@ -20,11 +20,11 @@ use {abort_on_err, driver};
 use rustc::ty::{self, TyCtxt, Resolutions, AllArenas};
 use rustc::cfg;
 use rustc::cfg::graphviz::LabelledCFG;
-use rustc::middle::cstore::CrateStoreDyn;
 use rustc::session::Session;
 use rustc::session::config::{Input, OutputFilenames};
 use rustc_borrowck as borrowck;
 use rustc_borrowck::graphviz as borrowck_dot;
+use rustc_metadata::cstore::CStore;
 
 use rustc_mir::util::{write_mir_pretty, write_mir_graphviz};
 
@@ -199,7 +199,7 @@ impl PpSourceMode {
     }
     fn call_with_pp_support_hir<'tcx, A, F>(&self,
                                                sess: &'tcx Session,
-                                               cstore: &'tcx CrateStoreDyn,
+                                               cstore: &'tcx CStore,
                                                hir_map: &hir_map::Map<'tcx>,
                                                analysis: &ty::CrateAnalysis,
                                                resolutions: &Resolutions,
@@ -918,7 +918,7 @@ pub fn print_after_parsing(sess: &Session,
 }
 
 pub fn print_after_hir_lowering<'tcx, 'a: 'tcx>(sess: &'a Session,
-                                                cstore: &'tcx CrateStoreDyn,
+                                                cstore: &'tcx CStore,
                                                 hir_map: &hir_map::Map<'tcx>,
                                                 analysis: &ty::CrateAnalysis,
                                                 resolutions: &Resolutions,
@@ -1074,7 +1074,7 @@ pub fn print_after_hir_lowering<'tcx, 'a: 'tcx>(sess: &'a Session,
 // with a different callback than the standard driver, so that isn't easy.
 // Instead, we call that function ourselves.
 fn print_with_analysis<'tcx, 'a: 'tcx>(sess: &'a Session,
-                                       cstore: &'a CrateStoreDyn,
+                                       cstore: &'a CStore,
                                        hir_map: &hir_map::Map<'tcx>,
                                        analysis: &ty::CrateAnalysis,
                                        resolutions: &Resolutions,