2019-12-23 15:08:18 +00:00
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#pragma once
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2019-12-30 22:24:19 +00:00
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#include <Parsers/IAST.h>
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2019-12-23 15:08:18 +00:00
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namespace DB
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{
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2019-12-27 18:52:18 +00:00
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/// It converts if-chain to multiIf.
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class OptimizeIfChainsVisitor
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{
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public:
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2019-12-28 22:08:18 +00:00
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OptimizeIfChainsVisitor() = default;
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2019-12-27 18:52:18 +00:00
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void visit(ASTPtr & ast);
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2019-12-23 15:08:18 +00:00
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2019-12-30 22:24:19 +00:00
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private:
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ASTs ifChain(const ASTPtr & child);
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2019-12-27 18:52:18 +00:00
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};
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2019-12-23 15:08:18 +00:00
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2019-12-27 18:52:18 +00:00
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}
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