vize_l1 0.454.0

L1 - the lossless Vue-template surface tree (codename Sinopia, Davinci P2-7)
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227

use oxc_ast::ast::{BindingPattern, Expression};
use vize_l0::{Allocator, Span};

use super::super::{Embed, EmbedHole, EmbedSource, Grammar, Lang, Shape, parse_once};
use crate::embed::prepare_attribute_value;

fn embed(text: &str, shape: Shape, lang: Lang) -> Embed<'_> {
    Embed {
        grammar: Grammar { shape, lang },
        source: EmbedSource::authored(text, Span::new(0, text.len() as u32)).unwrap(),
    }
}

#[test]
fn original_parameter_roots_and_descendants_outlive_the_observation_owner() {
    let allocator = Allocator::default();
    let (parameters, rest) = {
        let tree = parse_once(
            &allocator,
            embed("{item}, index = 0, ...rest", Shape::SlotParams, Lang::Js),
        );
        let view = tree.slot_params().unwrap();
        let original_slice = view.parameters().as_ptr();
        let BindingPattern::ObjectPattern(object) = &view.parameters()[0].pattern else {
            panic!("expected actual binding pattern")
        };
        let object = &**object as *const _;
        let initializer = view.parameters()[1].initializer.as_deref().unwrap() as *const _;
        let BindingPattern::BindingIdentifier(identifier) = &view.rest().unwrap().rest.argument
        else {
            panic!("expected actual rest binding")
        };
        let identifier = &**identifier as *const _;
        let retained = tree.into_slot_params().unwrap();
        assert_eq!(retained.hole(), None);
        let parameters = retained.parameters().unwrap();
        let rest = retained.rest().unwrap();
        assert_eq!(parameters.as_ptr(), original_slice);
        let BindingPattern::ObjectPattern(moved) = &parameters[0].pattern else {
            panic!("expected original object binding")
        };
        assert_eq!(&**moved as *const _, object);
        assert_eq!(
            parameters[1].initializer.as_deref().unwrap() as *const _,
            initializer
        );
        let BindingPattern::BindingIdentifier(moved) = &rest.rest.argument else {
            panic!("expected original rest identifier")
        };
        assert_eq!(&**moved as *const _, identifier);
        assert_eq!(
            retained.decoded_span(parameters[0].span),
            Ok(Span::new(0, 6))
        );
        assert_eq!(retained.authored_span(rest.span), Ok(Span::new(19, 26)));
        drop(retained);
        (parameters, rest)
    };
    assert_eq!(parameters.len(), 2);
    assert!(matches!(
        parameters[1].initializer.as_deref(),
        Some(Expression::NumericLiteral(_))
    ));
    let BindingPattern::BindingIdentifier(identifier) = &rest.rest.argument else {
        panic!("rest root remains valid after owner drop")
    };
    assert_eq!(identifier.name.as_str(), "rest");
}

#[test]
fn retained_bindings_keep_ts_annotations_and_existing_decoded_maps() {
    let allocator = Allocator::default();
    let tree = parse_once(
        &allocator,
        embed("value: Item", Shape::SlotParams, Lang::Ts),
    );
    let annotation = tree.slot_params().unwrap().parameters()[0]
        .type_annotation
        .as_deref()
        .unwrap() as *const _;
    let retained = tree.into_slot_params().unwrap();
    assert_eq!(retained.grammar().lang, Lang::Ts);
    assert_eq!(retained.parser_prefix(), 2);
    assert_eq!(
        retained.parameters().unwrap()[0]
            .type_annotation
            .as_deref()
            .unwrap() as *const _,
        annotation
    );
    assert_eq!(
        retained.decoded_span(retained.parameters().unwrap()[0].span),
        Ok(Span::new(0, 11))
    );
    let js = parse_once(
        &allocator,
        embed("value: Item", Shape::SlotParams, Lang::Js),
    )
    .into_slot_params()
    .unwrap();
    assert_eq!(js.hole(), Some(EmbedHole::Syntax));
    assert!(js.parameters().is_none() && js.rest().is_none());

    let source = prepare_attribute_value(&allocator, "zz&fjlig;zz", Span::new(2, 9)).unwrap();
    let map = source.decode_map().unwrap().segments().as_ptr();
    let retained = parse_once(
        &allocator,
        Embed {
            grammar: Grammar {
                shape: Shape::SlotParams,
                lang: Lang::Js,
            },
            source,
        },
    )
    .into_slot_params()
    .unwrap();
    assert_eq!(
        retained.source().decode_map().unwrap().segments().as_ptr(),
        map
    );
    let BindingPattern::BindingIdentifier(identifier) = &retained.parameters().unwrap()[0].pattern
    else {
        panic!("expected original once-decoded binding")
    };
    assert_eq!(identifier.name.as_str(), "fj");
    assert_eq!(retained.authored_span(identifier.span), Ok(Span::new(2, 9)));
}

#[test]
fn holes_keep_comments_and_complete_owned_diagnostics_without_recovery_bindings() {
    let allocator = Allocator::default();
    let tree = parse_once(
        &allocator,
        embed("value = /*keep*/", Shape::SlotParams, Lang::Js),
    );
    let message = tree.diagnostics().next().unwrap().message().as_ptr();
    let comment = tree.comments().next().unwrap().text().unwrap().as_ptr();
    let comment_slice = tree.embedding.as_ref().unwrap().comments().as_ptr();
    let retained = tree.into_slot_params().unwrap();
    assert_eq!(retained.hole(), Some(EmbedHole::Syntax));
    assert!(retained.parameters().is_none() && retained.rest().is_none());
    assert_eq!(
        retained.diagnostics().next().unwrap().message().as_ptr(),
        message
    );
    assert_eq!(
        retained.comments().next().unwrap().text().unwrap().as_ptr(),
        comment
    );
    assert_eq!(
        retained.observation.as_ref().unwrap().comments().as_ptr(),
        comment_slice
    );
    for diagnostic in retained.diagnostics() {
        for label in diagnostic.labels() {
            let span = label.decoded_span().unwrap();
            assert!(
                retained
                    .source()
                    .text()
                    .get(span.start as usize..span.end as usize)
                    .is_some()
            );
        }
    }
    let large = ",".repeat(32);
    let retained = parse_once(&allocator, embed(&large, Shape::SlotParams, Lang::Js))
        .into_slot_params()
        .unwrap();
    assert_eq!(retained.hole(), Some(EmbedHole::TokenBudget));
    assert_eq!(retained.source().text(), large);
    assert!(retained.parameters().is_none() && retained.rest().is_none());
    let retained = parse_once(
        &allocator,
        embed("x=()=>{import 'x'}", Shape::SlotParams, Lang::Js),
    )
    .into_slot_params()
    .unwrap();
    assert_eq!(retained.hole(), Some(EmbedHole::InvalidModuleContext));
    assert!(retained.parameters().is_none() && retained.rest().is_none());
}

#[test]
fn empty_and_rest_only_parameters_expose_no_generated_container() {
    let allocator = Allocator::default();
    let empty = parse_once(&allocator, embed("", Shape::SlotParams, Lang::Js))
        .into_slot_params()
        .unwrap();
    assert_eq!(empty.hole(), None);
    assert!(empty.parameters().unwrap().is_empty() && empty.rest().is_none());
    assert!(empty.decoded_span(oxc_span::Span::new(0, 4)).is_err());
    let rest = parse_once(
        &allocator,
        embed("...rest //tail", Shape::SlotParams, Lang::Js),
    )
    .into_slot_params()
    .unwrap();
    assert!(rest.parameters().unwrap().is_empty());
    assert_eq!(
        rest.decoded_span(rest.rest().unwrap().span),
        Ok(Span::new(0, 7))
    );
    assert_eq!(rest.comments().next().unwrap().text().unwrap(), "//tail");
    assert_eq!(
        rest.comments().next().unwrap().decoded_span(),
        Ok(Span::new(8, 14))
    );
}

#[test]
fn rejected_shapes_keep_the_same_original_expression_and_comments() {
    let allocator = Allocator::default();
    let tree = parse_once(
        &allocator,
        embed("/*keep*/left+right", Shape::Expr, Lang::Js),
    );
    let root = tree.expression().unwrap() as *const _;
    let comment = tree.comments().next().unwrap().text().unwrap().as_ptr();
    let original = tree.into_slot_params().unwrap_err();
    assert_eq!(original.grammar().shape, Shape::Expr);
    assert_eq!(original.expression().unwrap() as *const _, root);
    assert_eq!(
        original.comments().next().unwrap().text().unwrap().as_ptr(),
        comment
    );
}