LCOV - code coverage report
Current view: top level - gcc/rust/resolve - rust-late-name-resolver-2.0.cc (source / functions) Coverage Total Hit
Test: gcc.info Lines: 0.0 % 59 0
Test Date: 2024-04-27 14:03:13 Functions: 0.0 % 9 0
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: - 0 0

             Branch data     Line data    Source code
       1                 :             : // Copyright (C) 2020-2024 Free Software Foundation, Inc.
       2                 :             : 
       3                 :             : // This file is part of GCC.
       4                 :             : 
       5                 :             : // GCC is free software; you can redistribute it and/or modify it under
       6                 :             : // the terms of the GNU General Public License as published by the Free
       7                 :             : // Software Foundation; either version 3, or (at your option) any later
       8                 :             : // version.
       9                 :             : 
      10                 :             : // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      11                 :             : // WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12                 :             : // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      13                 :             : // for more details.
      14                 :             : 
      15                 :             : // You should have received a copy of the GNU General Public License
      16                 :             : // along with GCC; see the file COPYING3.  If not see
      17                 :             : // <http://www.gnu.org/licenses/>.
      18                 :             : 
      19                 :             : #include "optional.h"
      20                 :             : #include "rust-ast-full.h"
      21                 :             : #include "rust-late-name-resolver-2.0.h"
      22                 :             : #include "rust-default-resolver.h"
      23                 :             : #include "rust-path.h"
      24                 :             : #include "rust-tyty.h"
      25                 :             : #include "rust-hir-type-check.h"
      26                 :             : 
      27                 :             : namespace Rust {
      28                 :             : namespace Resolver2_0 {
      29                 :             : 
      30                 :           0 : Late::Late (NameResolutionContext &ctx) : DefaultResolver (ctx) {}
      31                 :             : 
      32                 :             : void
      33                 :           0 : Late::setup_builtin_types ()
      34                 :             : {
      35                 :           0 :   auto next_id = [this] () { return ctx.mappings.get_next_hir_id (); };
      36                 :             : 
      37                 :           0 :   static const std::pair<std::string, TyTy::BaseType *> builtins[] = {
      38                 :           0 :     {"u8", new TyTy::UintType (next_id (), TyTy::UintType::U8)},
      39                 :           0 :     {"u16", new TyTy::UintType (next_id (), TyTy::UintType::U16)},
      40                 :           0 :     {"u32", new TyTy::UintType (next_id (), TyTy::UintType::U32)},
      41                 :           0 :     {"u64", new TyTy::UintType (next_id (), TyTy::UintType::U64)},
      42                 :           0 :     {"u128", new TyTy::UintType (next_id (), TyTy::UintType::U128)},
      43                 :           0 :     {"i8", new TyTy::IntType (next_id (), TyTy::IntType::I8)},
      44                 :           0 :     {"i16", new TyTy::IntType (next_id (), TyTy::IntType::I16)},
      45                 :           0 :     {"i32", new TyTy::IntType (next_id (), TyTy::IntType::I32)},
      46                 :           0 :     {"i64", new TyTy::IntType (next_id (), TyTy::IntType::I64)},
      47                 :           0 :     {"i128", new TyTy::IntType (next_id (), TyTy::IntType::I128)},
      48                 :           0 :     {"f32", new TyTy::FloatType (next_id (), TyTy::FloatType::F32)},
      49                 :           0 :     {"f64", new TyTy::FloatType (next_id (), TyTy::FloatType::F64)},
      50                 :           0 :     {"usize", new TyTy::USizeType (next_id ())},
      51                 :           0 :     {"isize", new TyTy::ISizeType (next_id ())},
      52                 :             :     // missing char, str, never, ()
      53                 :             :     // does name resolution play a part for this? or is it all at typechecking?
      54                 :             :     // yeah it seems to be name resolution as well, which makes sense
      55                 :           0 :   };
      56                 :             : 
      57                 :           0 :   for (const auto &builtin : builtins)
      58                 :             :     {
      59                 :             :       // we should be able to use `insert_at_root` or `insert` here, since we're
      60                 :             :       // at the root :) hopefully!
      61                 :           0 :       auto ok
      62                 :           0 :         = ctx.types.insert (builtin.first, builtin.second->get_ref ()
      63                 :           0 :                             /* FIXME: Invalid! This returns an *HirId* */);
      64                 :             : 
      65                 :           0 :       rust_assert (ok);
      66                 :           0 :     }
      67                 :           0 : }
      68                 :             : 
      69                 :             : void
      70                 :           0 : Late::go (AST::Crate &crate)
      71                 :             : {
      72                 :           0 :   setup_builtin_types ();
      73                 :             : 
      74                 :           0 :   for (auto &item : crate.items)
      75                 :           0 :     item->accept_vis (*this);
      76                 :           0 : }
      77                 :             : 
      78                 :             : void
      79                 :           0 : Late::new_label (Identifier name, NodeId id)
      80                 :             : {
      81                 :             :   // labels can always shadow, so `insert` should never fail. if it does, we're
      82                 :             :   // in big trouble!
      83                 :           0 :   auto ok = ctx.labels.insert (name, id);
      84                 :             : 
      85                 :           0 :   rust_assert (ok);
      86                 :           0 : }
      87                 :             : 
      88                 :             : void
      89                 :           0 : Late::visit (AST::LetStmt &let)
      90                 :             : {
      91                 :             :   // so we don't need that method
      92                 :           0 :   DefaultResolver::visit (let);
      93                 :             : 
      94                 :             :   // how do we deal with the fact that `let a = blipbloup` should look for a
      95                 :             :   // label and cannot go through function ribs, but `let a = blipbloup()` can?
      96                 :             : 
      97                 :             :   // how do we insert ribs here, and only pop them when we exit the current
      98                 :             :   // function?
      99                 :             :   // keep a list of ribs to pop when a scope exits? so only for blocks?
     100                 :             :   // how do we pop ribs that need to be popped not in order?
     101                 :             :   // I think it's not important if we have shadowing, correct?
     102                 :             : 
     103                 :             :   // if we have shadowing, it should work! we'll see
     104                 :             : 
     105                 :             :   // ctx.insert(Identifier name, NodeId id, Namespace ns)
     106                 :             :   // ctx.scoped (Rib::Kind::Normal /* FIXME: Is that valid? */,
     107                 :             :   // Namespace::Labels,
     108                 :             :   //      let.get_node_id (), [] () {});
     109                 :           0 : }
     110                 :             : 
     111                 :             : void
     112                 :           0 : Late::visit (AST::IdentifierPattern &identifier)
     113                 :             : {
     114                 :             :   // do we insert in labels or in values
     115                 :             :   // but values does not allow shadowing... since functions cannot shadow
     116                 :             :   // do we insert functions in labels as well?
     117                 :           0 :   new_label (identifier.get_ident (), identifier.get_node_id ());
     118                 :           0 : }
     119                 :             : 
     120                 :             : void
     121                 :           0 : Late::visit (AST::IdentifierExpr &expr)
     122                 :             : {
     123                 :             :   // TODO: same thing as visit(PathInExpression) here?
     124                 :             : 
     125                 :           0 :   tl::optional<NodeId> resolved = tl::nullopt;
     126                 :           0 :   auto label = ctx.labels.get (expr.get_ident ());
     127                 :           0 :   auto value = ctx.values.get (expr.get_ident ());
     128                 :             : 
     129                 :           0 :   if (label)
     130                 :           0 :     resolved = label;
     131                 :           0 :   else if (value)
     132                 :           0 :     resolved = value;
     133                 :             :   // TODO: else emit error?
     134                 :             : 
     135                 :           0 :   ctx.map_usage (expr.get_node_id (), *resolved);
     136                 :             : 
     137                 :             :   // in the old resolver, resolutions are kept in the resolver, not the mappings
     138                 :             :   // :/ how do we deal with that?
     139                 :             :   // ctx.mappings.insert_resolved_name(expr, resolved);
     140                 :             : 
     141                 :             :   // For empty types, do we perform a lookup in ctx.types or should the
     142                 :             :   // toplevel instead insert a name in ctx.values? (like it currently does)
     143                 :           0 : }
     144                 :             : 
     145                 :             : void
     146                 :           0 : Late::visit (AST::PathInExpression &expr)
     147                 :             : {
     148                 :             :   // TODO: How do we have a nice error with `can't capture dynamic environment
     149                 :             :   // in a function item` error here?
     150                 :             :   // do we emit it in `get<Namespace::Labels>`?
     151                 :             : 
     152                 :           0 :   auto label = ctx.labels.resolve_path (expr.get_segments ());
     153                 :           0 :   auto value = ctx.values.resolve_path (expr.get_segments ());
     154                 :           0 : }
     155                 :             : 
     156                 :             : void
     157                 :           0 : Late::visit (AST::TypePath &type)
     158                 :             : {
     159                 :             :   // should we add type path resolution in `ForeverStack` directly? Since it's
     160                 :             :   // quite more complicated.
     161                 :             :   // maybe we can overload `resolve_path<Namespace::Types>` to only do
     162                 :             :   // typepath-like path resolution? that sounds good
     163                 :             : 
     164                 :           0 :   auto resolved = ctx.types.get (type.get_segments ().back ()->as_string ());
     165                 :             : 
     166                 :           0 :   ctx.map_usage (type.get_node_id (), *resolved);
     167                 :           0 : }
     168                 :             : 
     169                 :             : } // namespace Resolver2_0
     170                 :             : } // namespace Rust
        

Generated by: LCOV version 2.1-beta

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto,rust,m2 --enable-host-shared. GCC test suite is run with the built compiler.