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LibSQL: Parse DROP TABLE statement

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Timothy Flynn 2021-04-20 10:16:28 -04:00 • committed by Andreas Kling
parent 110cd98c0a
commit e92bffb2e3
4 changed files with 79 additions and 2 deletions
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34
Userland/Libraries/LibSQL/Parser.cpp
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@ -38,8 +38,10 @@ NonnullRefPtr<Statement> Parser::next_statement()
switch (m_parser_state.m_token.type()) {
case TokenType::Create:
return parse_create_table_statement();
case TokenType::Drop:
return parse_drop_table_statement();
default:
expected("CREATE");
expected("CREATE or DROP");
return create_ast_node<ErrorStatement>();
}
}
@ -98,6 +100,36 @@ NonnullRefPtr<CreateTable> Parser::parse_create_table_statement()
return create_ast_node<CreateTable>(move(schema_name), move(table_name), move(column_definitions), is_temporary, is_error_if_table_exists);
}
NonnullRefPtr<DropTable> Parser::parse_drop_table_statement()
{
// https://sqlite.org/lang_droptable.html
consume(TokenType::Drop);
consume(TokenType::Table);
bool is_error_if_table_does_not_exist = true;
if (match(TokenType::If)) {
consume(TokenType::If);
consume(TokenType::Exists);
is_error_if_table_does_not_exist = false;
}
String schema_or_table_name = consume(TokenType::Identifier).value();
String schema_name;
String table_name;
if (match(TokenType::Period)) {
consume();
schema_name = move(schema_or_table_name);
table_name = consume(TokenType::Identifier).value();
} else {
table_name = move(schema_or_table_name);
}
consume(TokenType::SemiColon);
return create_ast_node<DropTable>(move(schema_name), move(table_name), is_error_if_table_does_not_exist);
}
NonnullRefPtr<ColumnDefinition> Parser::parse_column_definition()
{
// https://sqlite.org/syntax/column-def.html