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71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
#include <Parsers/ParserCreateRoleQuery.h>
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#include <Parsers/ASTCreateRoleQuery.h>
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#include <Parsers/CommonParsers.h>
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#include <Parsers/parseUserName.h>
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namespace DB
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{
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namespace
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{
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bool parseRenameTo(IParserBase::Pos & pos, Expected & expected, String & new_name)
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{
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return IParserBase::wrapParseImpl(pos, [&]
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{
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if (!ParserKeyword{"RENAME TO"}.ignore(pos, expected))
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return false;
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return parseRoleName(pos, expected, new_name);
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});
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}
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}
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bool ParserCreateRoleQuery::parseImpl(Pos & pos, ASTPtr & node, Expected & expected)
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{
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bool alter;
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if (ParserKeyword{"CREATE ROLE"}.ignore(pos, expected))
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alter = false;
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else if (ParserKeyword{"ALTER ROLE"}.ignore(pos, expected))
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alter = true;
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else
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return false;
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bool if_exists = false;
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bool if_not_exists = false;
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bool or_replace = false;
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if (alter)
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{
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if (ParserKeyword{"IF EXISTS"}.ignore(pos, expected))
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if_exists = true;
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}
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else
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{
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if (ParserKeyword{"IF NOT EXISTS"}.ignore(pos, expected))
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if_not_exists = true;
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else if (ParserKeyword{"OR REPLACE"}.ignore(pos, expected))
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or_replace = true;
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}
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String name;
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if (!parseRoleName(pos, expected, name))
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return false;
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String new_name;
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if (alter)
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parseRenameTo(pos, expected, new_name);
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auto query = std::make_shared<ASTCreateRoleQuery>();
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node = query;
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query->alter = alter;
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query->if_exists = if_exists;
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query->if_not_exists = if_not_exists;
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query->or_replace = or_replace;
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query->name = std::move(name);
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query->new_name = std::move(new_name);
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return true;
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}
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}
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