mach_core/dag/
node.rs

1use serde::{Deserialize, Serialize};
2use crate::dag::Visitor;
3
4
5///
6/// MachNode.
7/// This is where data is referenced/owned as relational to other data.
8/// Nodes are meant to be as small as possible. They are used for relationships, not actual data.
9///
10#[derive(Debug, Serialize, Deserialize)]
11pub struct MachNode {
12    /// Name of this node - does not have to be unique to the graph.
13    pub name: String,
14
15    /// Parent index within graph. Same as 'index' means no parent.
16    pub parent: u32,
17
18    /// Index of this node within graph.
19    pub index: u32,
20
21    /// Children of this node.
22    pub children: Vec<u32>,
23
24    /// Index of components in data store (not owned by graph).
25    pub components: Vec<u32>,
26}
27
28
29///
30/// Default implementation.
31/// 
32impl Default for MachNode {
33    fn default() -> Self {
34        Self {
35            name: String::from("root"),
36            parent: 0,
37            index: 0,
38            children: Vec::new(),
39            components: Vec::new()
40        }
41    }
42}
43
44
45///
46/// Implementation for MachNode.
47/// 
48impl MachNode {
49    /// New mach node with name.
50    pub fn new(name: String) -> Self {
51        Self {
52            name: name,
53            ..Default::default()
54        }
55    }
56
57
58    /// Has parent?
59    pub fn has_parent(&self) -> bool {
60        self.index != self.parent
61    }
62
63
64    /// Has children?
65    pub fn has_children(&self) -> bool {
66        self.children.len() > 0
67    }
68
69
70    /// Has components?
71    pub fn has_components(&self) -> bool {
72        self.components.len() > 0
73    }
74
75
76    /**********************************************************
77     * Visitors
78     **********************************************************/
79
80    /// Accept a visitor.
81    pub fn accept(&self, visitor: &impl Visitor) {
82        visitor.visit(self);
83    }
84
85
86    /// Accept a visitor mutable.
87    pub fn accept_mut(&mut self, visitor: &mut impl Visitor) {
88        visitor.visit_mut(self);
89    }
90}
91
92
93///
94/// From a parent.
95/// 
96impl From<(String, u32)> for MachNode {
97    fn from((name, parent): (String, u32)) -> Self {
98        Self {
99            name: name,
100            parent: parent,
101            ..Default::default()
102        }
103    }
104}
mach_core/dag/node.rs

mach_core/dag/
node.rs
