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30 lines
692 B
C++
30 lines
692 B
C++
#pragma once
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#include <unordered_set>
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#include <Parsers/IAST.h>
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#include <Interpreters/InDepthNodeVisitor.h>
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namespace DB
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{
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class ASTFunction;
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/// Rewrite 'any' and 'anyLast' functions pushing them inside original function.
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/// any(f(x, y, g(z))) -> f(any(x), any(y), g(any(z)))
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class RewriteAnyFunctionMatcher
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{
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public:
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struct Data
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{
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std::unordered_set<IAST *> rewritten;
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};
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static void visit(ASTPtr & ast, Data & data);
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static void visit(const ASTFunction &, ASTPtr & ast, Data & data);
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static bool needChildVisit(const ASTPtr & node, const ASTPtr & child);
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};
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using RewriteAnyFunctionVisitor = InDepthNodeVisitor<RewriteAnyFunctionMatcher, false>;
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}
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