csvsql 0.1.4

SQL like engine that works on CSV file.
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
41
42
43
44
45
46
47
48
49
50
51

use crate::{results::Column, value::Value};

pub struct DataRow {
    row: Vec<Value>,
}
impl DataRow {
    pub fn get<'a>(&'a self, column: &Column) -> &'a Value {
        self.row.get(column.get_index()).unwrap_or(&Value::Empty)
    }
    pub(crate) fn new(row: Vec<Value>) -> Self {
        Self { row }
    }
    pub(crate) fn set(&mut self, column: &Column, value: Value) {
        let index = column.get_index();
        if self.row.len() <= index {
            self.row.resize(index, Value::Empty);
        }
        self.row[index] = value;
    }
    pub(crate) fn insert_at(&mut self, column: &Column, value: Value) {
        let index = column.get_index();
        if self.row.len() >= index {
            self.row.insert(index, value);
        } else {
            self.set(column, value);
        }
    }
    pub(crate) fn delete_at(&mut self, column: &Column) {
        let index = column.get_index();
        if self.row.len() < index {
            self.row.remove(index);
        }
    }
}
pub struct ResultsData {
    rows: Vec<DataRow>,
}
impl ResultsData {
    pub fn iter(&self) -> impl Iterator<Item = &DataRow> {
        self.rows.iter()
    }
    pub fn into_iter(self) -> impl Iterator<Item = DataRow> {
        self.rows.into_iter()
    }
    pub(crate) fn new(rows: Vec<DataRow>) -> Self {
        Self { rows }
    }
    pub(crate) fn get(&self, index: usize) -> Option<&DataRow> {
        self.rows.get(index)
    }
}