50 lines
1.1 KiB
C++
50 lines
1.1 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 "ValueTracking.h"
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namespace Luau
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{
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namespace Compile
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{
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struct Constant
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{
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enum Type
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{
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Type_Unknown,
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Type_Nil,
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Type_Boolean,
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Type_Number,
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Type_String,
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};
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Type type = Type_Unknown;
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unsigned int stringLength = 0;
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union
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{
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bool valueBoolean;
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double valueNumber;
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const char* valueString = nullptr; // length stored in stringLength
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};
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bool isTruthful() const
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{
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LUAU_ASSERT(type != Type_Unknown);
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return type != Type_Nil && !(type == Type_Boolean && valueBoolean == false);
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}
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AstArray<const char> getString() const
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{
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LUAU_ASSERT(type == Type_String);
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return {valueString, stringLength};
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}
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};
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void foldConstants(DenseHashMap<AstExpr*, Constant>& constants, DenseHashMap<AstLocal*, Variable>& variables,
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DenseHashMap<AstLocal*, Constant>& locals, const DenseHashMap<AstExprCall*, int>* builtins, AstNode* root);
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} // namespace Compile
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} // namespace Luau
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