gitql_ast/types/
row.rs

1use std::any::Any;
2
3use super::base::DataType;
4
5#[derive(Clone)]
6pub struct RowType {
7    pub tuple: Vec<Box<dyn DataType>>,
8}
9
10impl RowType {
11    pub fn new(tuple: Vec<Box<dyn DataType>>) -> Self {
12        RowType { tuple }
13    }
14}
15
16impl DataType for RowType {
17    fn literal(&self) -> String {
18        let mut str = String::new();
19        let last_position = self.tuple.len() - 1;
20        str += "Row(";
21        for (pos, data_type) in self.tuple.iter().enumerate() {
22            str += &data_type.literal();
23            if pos != last_position {
24                str += ", ";
25            }
26        }
27        str += ")";
28        str
29    }
30
31    fn equals(&self, other: &Box<dyn DataType>) -> bool {
32        let row_type: Box<dyn DataType> = Box::new(self.clone());
33        if other.is_any() || other.is_variant_contains(&row_type) {
34            return true;
35        }
36
37        if let Some(other_row) = other.as_any().downcast_ref::<RowType>() {
38            if self.tuple.len() != other_row.tuple.len() {
39                return false;
40            }
41
42            let len = self.tuple.len();
43            for i in 0..len {
44                if !self.tuple[i].eq(&other_row.tuple[i]) {
45                    return false;
46                }
47            }
48
49            return true;
50        }
51
52        false
53    }
54
55    fn as_any(&self) -> &dyn Any {
56        self
57    }
58}
gitql_ast/types/row.rs

gitql_ast/types/
row.rs
