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50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
#pragma once
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#include <DB/Parsers/ASTEnumElement.h>
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#include <DB/Parsers/ExpressionElementParsers.h>
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namespace DB
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{
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class ParserEnumElement : public IParserBase
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{
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ParserStringLiteral name_parser;
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ParserNumber value_parser;
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protected:
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const char * getName() const override { return "enum element"; }
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bool parseImpl(Pos & pos, Pos end, ASTPtr & node, Pos & max_parsed_pos, Expected & expected) override
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{
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ParserString equality_sign_parser("=");
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ParserWhiteSpace ws;
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const auto begin = pos;
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ASTPtr name;
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if (!name_parser.parse(pos, end, name, max_parsed_pos, expected))
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return false;
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ws.ignore(pos, end, max_parsed_pos, expected);
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if (!equality_sign_parser.ignore(pos, end, max_parsed_pos, expected))
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return false;
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ws.ignore(pos, end, max_parsed_pos, expected);
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ASTPtr value;
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if (!value_parser.parse(pos, end, value, max_parsed_pos, expected))
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return false;
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node = std::make_shared<ASTEnumElement>(
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StringRange{ begin, pos },
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static_cast<const ASTLiteral &>(*name).value.get<String>(),
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static_cast<const ASTLiteral &>(*value).value);
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return true;
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}
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};
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}
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