79 lines
1.6 KiB
C++
79 lines
1.6 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/TypedAllocator.h"
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#include "Luau/Variant.h"
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namespace Luau
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{
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using BreadcrumbId = NotNull<const struct Breadcrumb>;
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struct Type;
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using TypeId = const Type*;
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struct Variadic;
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struct Negation;
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struct Conjunction;
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struct Disjunction;
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struct Equivalence;
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struct Proposition;
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using Refinement = Variant<Variadic, Negation, Conjunction, Disjunction, Equivalence, Proposition>;
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using RefinementId = Refinement*; // Can and most likely is nullptr.
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struct Variadic
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{
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std::vector<RefinementId> refinements;
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};
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struct Negation
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{
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RefinementId refinement;
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};
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struct Conjunction
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{
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RefinementId lhs;
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RefinementId rhs;
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};
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struct Disjunction
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{
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RefinementId lhs;
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RefinementId rhs;
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};
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struct Equivalence
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{
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RefinementId lhs;
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RefinementId rhs;
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};
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struct Proposition
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{
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BreadcrumbId breadcrumb;
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TypeId discriminantTy;
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};
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template<typename T>
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const T* get(RefinementId refinement)
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{
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return get_if<T>(refinement);
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}
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struct RefinementArena
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{
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RefinementId variadic(const std::vector<RefinementId>& refis);
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RefinementId negation(RefinementId refinement);
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RefinementId conjunction(RefinementId lhs, RefinementId rhs);
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RefinementId disjunction(RefinementId lhs, RefinementId rhs);
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RefinementId equivalence(RefinementId lhs, RefinementId rhs);
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RefinementId proposition(BreadcrumbId breadcrumb, TypeId discriminantTy);
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private:
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TypedAllocator<Refinement> allocator;
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};
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} // namespace Luau
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