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// Copyright (C) 2020-2022 Free Software Foundation, Inc.
// This file is part of GCC.
// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.
// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#ifndef RUST_MAPPING_COMMON
#define RUST_MAPPING_COMMON
#include "rust-system.h"
namespace Rust {
// refers to a Crate
typedef uint32_t CrateNum;
// refers to any node in the AST in current Crate
typedef uint32_t NodeId;
// refers to any node in the HIR for the current crate
typedef uint32_t HirId;
// refers to any top-level decl in HIR
typedef uint32_t LocalDefId;
struct DefId
{
CrateNum crateNum;
LocalDefId localDefId;
bool operator== (const DefId &other) const
{
return this->crateNum == other.crateNum
&& this->localDefId == other.localDefId;
}
bool operator!= (const DefId &other) const { return !(*this == other); }
bool operator< (const DefId &other) const
{
return ((uint64_t) this->crateNum << 32 | this->localDefId)
< ((uint64_t) other.crateNum << 32 | other.localDefId);
}
std::string as_string () const
{
std::string buf;
buf += std::to_string (crateNum);
buf += " "; // or anything else
buf += std::to_string (localDefId);
return buf;
}
};
#define UNKNOWN_CREATENUM ((uint32_t) (0))
#define UNKNOWN_NODEID ((uint32_t) (0))
#define UNKNOWN_HIRID ((uint32_t) (0))
#define UNKNOWN_LOCAL_DEFID ((uint32_t) (0))
#define UNKNOWN_DEFID (DefId{0, 0})
} // namespace Rust
namespace std {
template <> struct hash<Rust::DefId>
{
size_t operator() (const Rust::DefId &id) const noexcept
{
// TODO: Check if we can improve performance by having a better hash
// algorithm for `DefId`s
return hash<uint32_t> () (hash<uint32_t> () (id.crateNum)
+ hash<uint32_t> () (id.localDefId));
}
};
} // namespace std
#endif // RUST_MAPPING_COMMON
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