osirisdb 0.7.0

A SQL database engine built from scratch in Rust featuring a custom parser, binder, query planner, optimizer, catalog, and storage engine.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

use crate::{
    ast::CreateSchemaStmt,
    lexer::TokenKind,
    parser::{parser::Parser, parser_error::ParserError},
};

impl<'a> Parser<'a> {
    /// Executes parsing or lookup for the `parse_create_schema` operation.
    pub fn parse_create_schema(&mut self) -> Result<CreateSchemaStmt, ParserError> {
        let if_not_exists = self.parse_if_not_exist()?;

        let name = if matches!(
            self.current_token(),
            TokenKind::Ident | TokenKind::QuotedIdent
        ) {
            Some(self.expect_identifier()?)
        } else {
            None
        };

        let authorization = if self.consume(&TokenKind::Authorization) {
            Some(self.expect_identifier()?)
        } else {
            None
        };

        if name.is_none() && authorization.is_none() {
            return Err(ParserError::new(
                "CREATE SCHEMA requires a name or AUTHORIZATION",
                self.current.span.clone(),
            ));
        }

        Ok(CreateSchemaStmt {
            name,
            authorization,
            if_not_exists,
        })
    }
}