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drop table added

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VaclavT
2021-07-27 19:29:04 +02:00
parent 6d4fe43a3b
commit 7d91319f0b
11 changed files with 3282 additions and 161 deletions
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84
parser.cpp
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@@ -13,27 +13,22 @@ namespace usql {
m_lexer.parse(code);
// m_lexer.debugTokens();
if (m_lexer.tokenType() == TokenType::keyword_create && m_lexer.nextTokenType() == TokenType::keyword_table) {
if (m_lexer.tokenType() == TokenType::keyword_create && m_lexer.nextTokenType() == TokenType::keyword_table)
return parse_create_table();
}
if (m_lexer.tokenType() == TokenType::keyword_insert) {
if (m_lexer.tokenType() == TokenType::keyword_insert)
return parse_insert_into_table();
}
if (m_lexer.tokenType() == TokenType::keyword_select) {
if (m_lexer.tokenType() == TokenType::keyword_select)
return parse_select_from_table();
}
if (m_lexer.tokenType() == TokenType::keyword_delete) {
if (m_lexer.tokenType() == TokenType::keyword_delete)
return parse_delete_from_table();
}
if (m_lexer.tokenType() == TokenType::keyword_update) {
if (m_lexer.tokenType() == TokenType::keyword_update)
return parse_update_table();
}
if (m_lexer.tokenType() == TokenType::keyword_load) {
if (m_lexer.tokenType() == TokenType::keyword_load)
return parse_load_table();
}
if (m_lexer.tokenType() == TokenType::keyword_save) {
if (m_lexer.tokenType() == TokenType::keyword_save)
return parse_save_table();
}
if (m_lexer.tokenType() == TokenType::keyword_drop)
return parse_drop_table();
std::cout << "ERROR, token:" << m_lexer.currentToken().token_string << std::endl;
return std::make_unique<Node>(NodeType::error);
@@ -110,7 +105,41 @@ namespace usql {
}
}
std::unique_ptr<Node> Parser::parse_load_table() {
m_lexer.skipToken(TokenType::keyword_load);
m_lexer.skipTokenOptional(TokenType::keyword_into);
std::string table_name = m_lexer.consumeCurrentToken().token_string;
m_lexer.skipTokenOptional(TokenType::keyword_from);
std::string file_name = m_lexer.consumeCurrentToken().token_string;
return std::make_unique<LoadIntoTableNode>(table_name, file_name);
}
std::unique_ptr<Node> Parser::parse_save_table() {
m_lexer.skipToken(TokenType::keyword_save);
m_lexer.skipTokenOptional(TokenType::keyword_table);
std::string table_name = m_lexer.consumeCurrentToken().token_string;
m_lexer.skipTokenOptional(TokenType::keyword_into);
std::string file_name = m_lexer.consumeCurrentToken().token_string;
return std::make_unique<SaveTableNode>(table_name, file_name);
}
std::unique_ptr<Node> Parser::parse_drop_table() {
m_lexer.skipToken(TokenType::keyword_drop);
m_lexer.skipTokenOptional(TokenType::keyword_table);
std::string table_name = m_lexer.consumeCurrentToken().token_string;
return std::make_unique<DropTableNode>(table_name);
}
std::unique_ptr<Node> Parser::parse_insert_into_table() {
std::vector<ColNameNode> column_names{};
std::vector<std::unique_ptr<Node>> column_values{};
@@ -261,33 +290,6 @@ std::unique_ptr<Node> Parser::parse_select_from_table() {
return std::make_unique<UpdateTableNode>(table_name, cols_names, std::move(values), std::move(where_node));
}
std::unique_ptr<Node> Parser::parse_load_table() {
m_lexer.skipToken(TokenType::keyword_load);
m_lexer.skipTokenOptional(TokenType::keyword_into);
std::string table_name = m_lexer.consumeCurrentToken().token_string;
m_lexer.skipTokenOptional(TokenType::keyword_from);
std::string file_name = m_lexer.consumeCurrentToken().token_string;
return std::make_unique<LoadIntoTableNode>(table_name, file_name);
}
std::unique_ptr<Node> Parser::parse_save_table() {
m_lexer.skipToken(TokenType::keyword_save);
m_lexer.skipTokenOptional(TokenType::keyword_table);
std::string table_name = m_lexer.consumeCurrentToken().token_string;
m_lexer.skipTokenOptional(TokenType::keyword_into);
std::string file_name = m_lexer.consumeCurrentToken().token_string;
return std::make_unique<SaveTableNode>(table_name, file_name);
}
std::unique_ptr<Node> Parser::parse_where_clause() {
// TODO add support for multiple filters
// TODO add support for parenthesis