46 lines
908 B
C++
46 lines
908 B
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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#include "AstQueryDsl.h"
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namespace Luau
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{
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FindNthOccurenceOf::FindNthOccurenceOf(Nth nth)
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: requestedNth(nth)
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{
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}
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bool FindNthOccurenceOf::checkIt(AstNode* n)
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{
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if (theNode)
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return false;
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if (n->classIndex == requestedNth.classIndex)
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{
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// Human factor: the requestedNth starts from 1 because of the term `nth`.
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if (currentOccurrence + 1 != requestedNth.nth)
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++currentOccurrence;
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else
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theNode = n;
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}
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return !theNode; // once found, returns false and stops traversal
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}
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bool FindNthOccurenceOf::visit(AstNode* n)
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{
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return checkIt(n);
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}
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bool FindNthOccurenceOf::visit(AstType* t)
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{
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return checkIt(t);
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}
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bool FindNthOccurenceOf::visit(AstTypePack* t)
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{
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return checkIt(t);
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}
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} // namespace Luau
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