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66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
#pragma once
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#include <DB/Parsers/IAST.h>
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namespace DB
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{
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/** Name, type, default-specifier, default-expression.
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* The type is optional if default-expression is specified.
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*/
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class ASTColumnDeclaration : public IAST
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{
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public:
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String name;
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ASTPtr type;
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String default_specifier;
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ASTPtr default_expression;
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ASTColumnDeclaration() = default;
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ASTColumnDeclaration(const StringRange range) : IAST{range} {}
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String getID() const override { return "ColumnDeclaration_" + name; }
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ASTPtr clone() const override
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{
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const auto res = std::make_shared<ASTColumnDeclaration>(*this);
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ASTPtr ptr{res};
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res->children.clear();
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if (type) {
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res->type = type->clone();
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res->children.push_back(res->type);
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}
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if (default_expression) {
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res->default_expression = default_expression->clone();
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res->children.push_back(res->default_expression);
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}
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return ptr;
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}
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protected:
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void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override
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{
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frame.need_parens = false;
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std::string indent_str = settings.one_line ? "" : std::string(4 * frame.indent, ' ');
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settings.ostr << settings.nl_or_ws << indent_str << backQuoteIfNeed(name);
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if (type)
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{
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settings.ostr << ' ';
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type->formatImpl(settings, state, frame);
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}
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if (default_expression)
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{
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settings.ostr << ' ' << (settings.hilite ? hilite_keyword : "") << default_specifier << (settings.hilite ? hilite_none : "") << ' ';
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default_expression->formatImpl(settings, state, frame);
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}
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}
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};
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}
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