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# File 'lib/active_record/turntable/sql_tree_patch.rb', line 150
def self.parse(tokens)
if SQLTree::Token::Identifier === tokens.peek
tokens.next
table_reference = self.new(tokens.current.literal)
if SQLTree::Token::AS === tokens.peek || SQLTree::Token::Identifier === tokens.peek
tokens.consume(SQLTree::Token::AS) if SQLTree::Token::AS === tokens.peek
table_reference.table_alias = tokens.next.literal
end
return table_reference
elsif SQLTree::Token::SELECT === tokens.peek(2)
table_reference = self.new(SQLTree::Node::SubQuery.parse(tokens))
if SQLTree::Token::AS === tokens.peek || SQLTree::Token::Identifier === tokens.peek
tokens.consume(SQLTree::Token::AS) if SQLTree::Token::AS === tokens.peek
table_reference.table_alias = tokens.next.literal
end
table_reference
else
raise SQLTree::Parser::UnexpectedToken.new(tokens.current)
end
end
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