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72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/NotNull.h"
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#include "Luau/Substitution.h"
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#include "Luau/TxnLog.h"
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#include "Luau/TypeFwd.h"
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#include "Luau/Unifiable.h"
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namespace Luau
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{
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struct TypeArena;
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struct TypeCheckLimits;
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struct Replacer : Substitution
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{
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DenseHashMap<TypeId, TypeId> replacements;
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DenseHashMap<TypePackId, TypePackId> replacementPacks;
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Replacer(NotNull<TypeArena> arena, DenseHashMap<TypeId, TypeId> replacements, DenseHashMap<TypePackId, TypePackId> replacementPacks)
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: Substitution(TxnLog::empty(), arena)
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, replacements(std::move(replacements))
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, replacementPacks(std::move(replacementPacks))
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{
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}
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bool isDirty(TypeId ty) override
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{
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return replacements.find(ty) != nullptr;
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}
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bool isDirty(TypePackId tp) override
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{
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return replacementPacks.find(tp) != nullptr;
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}
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TypeId clean(TypeId ty) override
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{
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return replacements[ty];
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}
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TypePackId clean(TypePackId tp) override
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{
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return replacementPacks[tp];
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}
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};
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// A substitution which replaces generic functions by monomorphic functions
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struct Instantiation2 : Substitution
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{
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// Mapping from generic types to free types to be used in instantiation.
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DenseHashMap<TypeId, TypeId> genericSubstitutions{nullptr};
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// Mapping from generic type packs to `TypePack`s of free types to be used in instantiation.
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DenseHashMap<TypePackId, TypePackId> genericPackSubstitutions{nullptr};
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Instantiation2(TypeArena* arena, DenseHashMap<TypeId, TypeId> genericSubstitutions, DenseHashMap<TypePackId, TypePackId> genericPackSubstitutions)
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: Substitution(TxnLog::empty(), arena)
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, genericSubstitutions(std::move(genericSubstitutions))
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, genericPackSubstitutions(std::move(genericPackSubstitutions))
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{
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}
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bool ignoreChildren(TypeId ty) override;
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bool isDirty(TypeId ty) override;
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bool isDirty(TypePackId tp) override;
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TypeId clean(TypeId ty) override;
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TypePackId clean(TypePackId tp) override;
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};
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} // namespace Luau
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