nodety 0.1.1

Easy to use library for node editor types, generics, inference and validation
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159

use crate::common::expr;
use nodety::{
    demo_type::DemoType,
    scope::{LocalParamID, Scope, ScopePointer, type_parameter::TypeParameter},
    type_expr::TypeExpr,
};

mod common;

#[test]
fn test_scope_count_defined_nested() {
    let mut root = Scope::<DemoType>::new_root();
    root.define(LocalParamID(0), TypeParameter::default());
    let root_ptr = ScopePointer::new(root);

    let mut child = Scope::new_child(&root_ptr);
    child.define(LocalParamID(1), TypeParameter::default());
    let child_ptr = ScopePointer::new(child);

    assert_eq!(child_ptr.count_defined(), 2);
    assert_eq!(root_ptr.count_defined(), 1);
}

#[test]
fn test_scope_is_empty() {
    let root = Scope::<DemoType>::new_root();
    assert!(root.is_empty());

    let ptr = ScopePointer::new(root);
    let child = Scope::new_child(&ptr);
    assert!(child.is_empty());

    let mut non_empty = Scope::<DemoType>::new_root();
    non_empty.define(LocalParamID(0), TypeParameter::default());
    assert!(!non_empty.is_empty());
}

#[test]
fn test_scope_is_empty_nested_non_empty_parent() {
    let mut root = Scope::<DemoType>::new_root();
    root.define(LocalParamID(0), TypeParameter::default());
    let root_ptr = ScopePointer::new(root);

    let empty_child = Scope::new_child(&root_ptr);
    assert!(!empty_child.is_empty());
}

#[test]
fn test_scope_all_defined() {
    let mut root = Scope::<DemoType>::new_root();
    root.define(LocalParamID(0), TypeParameter::default());
    let root_ptr = ScopePointer::new(root);

    let mut child = Scope::new_child(&root_ptr);
    child.define(LocalParamID(1), TypeParameter::default());

    let all: Vec<_> = child.all_defined().collect();
    assert_eq!(all.len(), 2);
}

#[test]
fn test_scope_infer_already_inferred_error() {
    let mut scope = Scope::<DemoType>::new_root();
    scope.define(LocalParamID(0), TypeParameter::default());

    scope.infer(&LocalParamID(0), expr("Integer"), ScopePointer::new_root()).unwrap();
    let result = scope.infer(&LocalParamID(0), expr("String"), ScopePointer::new_root());
    assert!(result.is_err());
}

#[test]
fn test_scope_infer_parameter_not_found_error() {
    let scope = Scope::<DemoType>::new_root();
    let result = scope.infer(&LocalParamID(99), expr("Integer"), ScopePointer::new_root());
    assert!(result.is_err());
}

#[test]
fn test_scope_infer_defaults_with_default() {
    let mut scope = Scope::<DemoType>::new_root();
    scope.define(LocalParamID(0), TypeParameter { bound: None, default: Some(expr("Integer")) });
    let scope_ptr = ScopePointer::new(scope);
    scope_ptr.infer_defaults();

    let (inferred, _) = scope_ptr.lookup_inferred(&LocalParamID(0)).unwrap();
    assert_eq!(inferred, expr("Integer"));
}

#[test]
fn test_scope_infer_defaults_with_bound_no_default() {
    let mut scope = Scope::<DemoType>::new_root();
    scope.define(LocalParamID(0), TypeParameter { bound: Some(expr("Comparable")), default: None });
    let scope_ptr = ScopePointer::new(scope);
    scope_ptr.infer_defaults();

    let (inferred, _) = scope_ptr.lookup_inferred(&LocalParamID(0)).unwrap();
    assert_eq!(inferred, expr("Comparable"));
}

#[test]
fn test_scope_infer_defaults_no_bound_no_default() {
    let mut scope = Scope::<DemoType>::new_root();
    scope.define(LocalParamID(0), TypeParameter::default());
    let scope_ptr = ScopePointer::new(scope);
    scope_ptr.infer_defaults();

    let (inferred, _) = scope_ptr.lookup_inferred(&LocalParamID(0)).unwrap();
    assert_eq!(inferred, TypeExpr::Any);
}

#[test]
fn test_scope_lookup_child_sees_parent() {
    let mut root = Scope::<DemoType>::new_root();
    root.define(LocalParamID(0), TypeParameter::default());
    let root_ptr = ScopePointer::new(root);

    let child = Scope::new_child(&root_ptr);
    let child_ptr = ScopePointer::new(child);

    assert!(child_ptr.lookup(&LocalParamID(0)).is_some());
    assert!(child_ptr.lookup(&LocalParamID(99)).is_none());
}

#[test]
fn test_scope_is_inferred() {
    let mut scope = Scope::<DemoType>::new_root();
    scope.define(LocalParamID(0), TypeParameter::default());
    assert!(!scope.is_inferred(&LocalParamID(0)));
    assert!(!scope.is_inferred(&LocalParamID(99)));

    scope.infer(&LocalParamID(0), expr("Integer"), ScopePointer::new_root()).unwrap();
    assert!(scope.is_inferred(&LocalParamID(0)));
}

#[test]
fn test_scope_lookup_scope() {
    let mut root = Scope::<DemoType>::new_root();
    root.define(LocalParamID(0), TypeParameter::default());
    let root_ptr = ScopePointer::new(root);

    assert!(root_ptr.lookup_scope(&LocalParamID(0)).is_some());
    assert!(root_ptr.lookup_scope(&LocalParamID(99)).is_none());
}

#[test]
fn test_local_param_id_from_char() {
    let id = LocalParamID::from('T');
    assert_eq!(id, LocalParamID('T' as u32));
}

#[test]
fn test_local_param_id_from_multichar_str() {
    let id1 = LocalParamID::from("hello");
    let id2 = LocalParamID::from("hello");
    assert_eq!(id1, id2);

    let id3 = LocalParamID::from("world");
    assert_ne!(id1, id3);
}