43 lines
1.2 KiB
C++
43 lines
1.2 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/Ast.h"
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#include "Luau/DenseHash.h"
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namespace Luau
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{
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class AstNameTable;
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}
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namespace Luau
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{
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namespace Compile
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{
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enum class Global
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{
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Default = 0,
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Mutable, // builtin that has contents unknown at compile time, blocks GETIMPORT for chains
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Written, // written in the code which means we can't reason about the value
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};
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struct Variable
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{
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AstExpr* init = nullptr; // initial value of the variable; filled by trackValues
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bool written = false; // is the variable ever assigned to? filled by trackValues
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bool constant = false; // is the variable's value a compile-time constant? filled by constantFold
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};
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void assignMutable(DenseHashMap<AstName, Global>& globals, const AstNameTable& names, const char** mutableGlobals);
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void trackValues(DenseHashMap<AstName, Global>& globals, DenseHashMap<AstLocal*, Variable>& variables, AstNode* root);
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inline Global getGlobalState(const DenseHashMap<AstName, Global>& globals, AstName name)
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{
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const Global* it = globals.find(name);
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return it ? *it : Global::Default;
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}
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} // namespace Compile
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} // namespace Luau
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