neuxdb 0.1.0

A super simple, embedded, encrypted database like SQLite, using pipe-separated files and age encryption.
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

use crate::core::syntax::Statement;
use crate::error::NeuxDbError;
use std::collections::HashSet;
use std::iter::Peekable;
use std::slice::Iter;
pub(super) fn parse_create(iter: &mut Peekable<Iter<String>>) -> Result<Statement, NeuxDbError> {
    match iter.next() {
        Some(t) if t.to_lowercase() == "table" => {}
        _ => return Err(NeuxDbError::Parse("Expected 'TABLE' after CREATE".into())),
    }
    let name = match iter.next() {
        Some(n) => n.clone(),
        None => return Err(NeuxDbError::Parse("Missing table name".into())),
    };
    match iter.peek() {
        Some(s) if *s == "(" => {
            iter.next();
        }
        _ => return Err(NeuxDbError::Parse("Missing '(' after table name".into())),
    }
    let mut columns = Vec::new();
    loop {
        match iter.next() {
            Some(col) if *col == ")" => break,
            Some(col) if *col == "," => continue,
            Some(col) => {
                columns.push(col.clone());
            }
            None => return Err(NeuxDbError::Parse("Missing ')'".into())),
        }
    }
    let mut seen = HashSet::new();
    for col in &columns {
        if !seen.insert(col.clone()) {
            return Err(NeuxDbError::DuplicateColumn(col.clone()));
        }
    }
    Ok(Statement::CreateTable { name, columns })
}