mathml_rs/structs/
lambda.rs

1use super::math_node::{MathNodeType, NodeIndex};
2use std::fmt;
3
4#[derive(Default, Debug, Clone)]
5pub struct Lambda {
6    pub children: Vec<NodeIndex>,
7    pub bindings: Vec<NodeIndex>,
8    pub expr: Option<NodeIndex>,
9    pub parent: Option<NodeIndex>,
10}
11
12impl Lambda {
13    pub fn index(&mut self, tag_type: MathNodeType, location: NodeIndex) {
14        match tag_type {
15            MathNodeType::Op
16            | MathNodeType::Apply
17            | MathNodeType::Lambda
18            | MathNodeType::Piecewise
19            | MathNodeType::Ci
20            | MathNodeType::Cn
21            | MathNodeType::Constant => {
22                if self.expr == None {
23                    self.expr = Some(location);
24                } else {
25                    panic!("Can't have two expressions in a lambda function!");
26                }
27            }
28            MathNodeType::BVar => {
29                self.bindings.push(location);
30            }
31            MathNodeType::Root | MathNodeType::Piece | MathNodeType::Otherwise => {
32                panic!("Can't have {} in a lambda function!", tag_type);
33            }
34        }
35    }
36}
37
38impl fmt::Display for Lambda {
39    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
40        write!(
41            f,
42            "Bindings: {:?}, Expr: {:?}, Children: {:?}, Parent: {:?}",
43            self.bindings, self.expr, self.children, self.parent
44        )
45    }
46}
mathml_rs/structs/lambda.rs

mathml_rs/structs/
lambda.rs
