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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
bfe5c36bfc
These are used by the AST in lots of ways, and this resolves various layering issues. This means that `AllocationId` also lives in ast/, but is managed by interpreter/. A better layering here would be desirable, but this seems good enough for the time being.
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_EXPLORER_INTERPRETER_HEAP_ALLOCATION_INTERFACE_H_
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#define CARBON_EXPLORER_INTERPRETER_HEAP_ALLOCATION_INTERFACE_H_
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#include "explorer/ast/address.h"
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#include "explorer/common/arena.h"
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#include "explorer/common/nonnull.h"
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namespace Carbon {
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class Value;
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// The allocation interface for Heap, factored out as an interface in order to
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// resolve a layering issue. No other class should derive from this.
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class HeapAllocationInterface {
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public:
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HeapAllocationInterface(const HeapAllocationInterface&) = delete;
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auto operator=(const HeapAllocationInterface&)
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-> HeapAllocationInterface& = delete;
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// Put the given value on the heap and mark it as alive.
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virtual auto AllocateValue(Nonnull<const Value*> v) -> AllocationId = 0;
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// Marks this allocation, and all of its sub-objects, as dead.
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virtual void Deallocate(AllocationId allocation) = 0;
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// Returns the arena used to allocate the values in this heap.
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virtual auto arena() const -> Arena& = 0;
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// Returns the ID of the first allocation that holds `v`, if one exists.
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// TODO: Find a way to remove this.
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virtual auto GetAllocationId(Nonnull<const Value*> v) const
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-> std::optional<AllocationId> = 0;
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protected:
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HeapAllocationInterface() = default;
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virtual ~HeapAllocationInterface() = default;
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};
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} // namespace Carbon
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#endif // CARBON_EXPLORER_INTERPRETER_HEAP_ALLOCATION_INTERFACE_H_
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