ClickHouse/src/Analyzer/ConstantNode.cpp
2022-10-24 10:22:18 +02:00

67 lines
1.8 KiB
C++

#include <Analyzer/ConstantNode.h>
#include <Common/FieldVisitorToString.h>
#include <Common/SipHash.h>
#include <IO/WriteBuffer.h>
#include <IO/WriteHelpers.h>
#include <IO/Operators.h>
#include <DataTypes/FieldToDataType.h>
#include <Parsers/ASTLiteral.h>
namespace DB
{
ConstantNode::ConstantNode(Field value_, DataTypePtr value_data_type_)
: value(std::move(value_))
, value_string_dump(applyVisitor(FieldVisitorToString(), value))
, type(std::move(value_data_type_))
{}
ConstantNode::ConstantNode(Field value_)
: value(std::move(value_))
, value_string_dump(applyVisitor(FieldVisitorToString(), value))
, type(applyVisitor(FieldToDataType(), value))
{}
void ConstantNode::dumpTreeImpl(WriteBuffer & buffer, FormatState & format_state, size_t indent) const
{
buffer << std::string(indent, ' ') << "CONSTANT id: " << format_state.getNodeId(this);
if (hasAlias())
buffer << ", alias: " << getAlias();
buffer << ", value: " << value.dump();
buffer << ", result_type: " << type->getName();
}
bool ConstantNode::isEqualImpl(const IQueryTreeNode & rhs) const
{
const auto & rhs_typed = assert_cast<const ConstantNode &>(rhs);
return value == rhs_typed.value && value_string_dump == rhs_typed.value_string_dump && type->equals(*rhs_typed.type);
}
void ConstantNode::updateTreeHashImpl(HashState & hash_state) const
{
auto type_name = type->getName();
hash_state.update(type_name.size());
hash_state.update(type_name);
hash_state.update(value_string_dump.size());
hash_state.update(value_string_dump);
}
ASTPtr ConstantNode::toASTImpl() const
{
return std::make_shared<ASTLiteral>(value);
}
QueryTreeNodePtr ConstantNode::cloneImpl() const
{
return std::make_shared<ConstantNode>(value, type);
}
}