fallow_extract/
html.rs

1//! HTML file parsing for script, stylesheet, and Angular template references.
2//!
3//! Extracts `<script src="...">` and `<link rel="stylesheet" href="...">` references
4//! from HTML files, creating graph edges so that referenced JS/CSS assets (and their
5//! transitive imports) are reachable from the HTML entry point.
6//!
7//! Also scans for Angular template syntax (`{{ }}`, `[prop]`, `(event)`, `@if`, etc.)
8//! and stores referenced identifiers as `MemberAccess` entries with a sentinel object,
9//! enabling the analysis phase to credit component class members used in external templates.
10
11use std::path::Path;
12use std::sync::LazyLock;
13
14use oxc_span::Span;
15
16use crate::asset_url::normalize_asset_url;
17use crate::sfc_template::angular::{self, ANGULAR_TPL_SENTINEL};
18use crate::{ImportInfo, ImportedName, MemberAccess, ModuleInfo};
19use fallow_types::discover::FileId;
20
21/// Regex to match HTML comments (`<!-- ... -->`) for stripping before extraction.
22static HTML_COMMENT_RE: LazyLock<regex::Regex> =
23    LazyLock::new(|| regex::Regex::new(r"(?s)<!--.*?-->").expect("valid regex"));
24
25/// Regex to extract `src` attribute from `<script>` tags.
26/// Matches both `<script src="...">` and `<script type="module" src="...">`.
27/// Uses `(?s)` so `.` matches newlines (multi-line attributes).
28static SCRIPT_SRC_RE: LazyLock<regex::Regex> = LazyLock::new(|| {
29    regex::Regex::new(r#"(?si)<script\b(?:[^>"']|"[^"]*"|'[^']*')*?\bsrc\s*=\s*["']([^"']+)["']"#)
30        .expect("valid regex")
31});
32
33/// Regex to extract `href` attribute from `<link>` tags with `rel="stylesheet"` or
34/// `rel="modulepreload"`.
35/// Handles attributes in any order (rel before or after href).
36static LINK_HREF_RE: LazyLock<regex::Regex> = LazyLock::new(|| {
37    regex::Regex::new(
38        r#"(?si)<link\b(?:[^>"']|"[^"]*"|'[^']*')*?\brel\s*=\s*["'](stylesheet|modulepreload)["'](?:[^>"']|"[^"]*"|'[^']*')*?\bhref\s*=\s*["']([^"']+)["']"#,
39    )
40    .expect("valid regex")
41});
42
43/// Regex for the reverse attribute order: href before rel.
44static LINK_HREF_REVERSE_RE: LazyLock<regex::Regex> = LazyLock::new(|| {
45    regex::Regex::new(
46        r#"(?si)<link\b(?:[^>"']|"[^"]*"|'[^']*')*?\bhref\s*=\s*["']([^"']+)["'](?:[^>"']|"[^"]*"|'[^']*')*?\brel\s*=\s*["'](stylesheet|modulepreload)["']"#,
47    )
48    .expect("valid regex")
49});
50
51/// Check if a path is an HTML file.
52// Keep in sync with fallow_core::analyze::predicates::is_html_file (crate boundary prevents sharing)
53pub(crate) fn is_html_file(path: &Path) -> bool {
54    path.extension()
55        .and_then(|e| e.to_str())
56        .is_some_and(|ext| ext == "html")
57}
58
59/// Returns true if an HTML asset reference is a remote URL that should be skipped.
60pub(crate) fn is_remote_url(src: &str) -> bool {
61    src.starts_with("http://")
62        || src.starts_with("https://")
63        || src.starts_with("//")
64        || src.starts_with("data:")
65}
66
67/// Build-time template placeholders that aren't valid import specifiers and
68/// never resolve to a real file. Skip them at extraction time so they don't
69/// enter the import graph as unresolvable specifiers.
70///
71/// - `{{ ... }}` covers Handlebars (Ember `index.html`'s `{{rootURL}}`,
72///   `{{config.assetsPath}}`), Mustache (Jekyll, Hugo), Jinja2 (Pelican /
73///   11ty plugins), and pre-compiled Vue / Angular templates whose
74///   interpolation has leaked into a checked-in HTML scaffold.
75/// - `###...###` covers ember-cli blueprint scaffold placeholders
76///   (`###APPNAME###`, `###DUMMY###`) checked in as addon-fixture templates.
77///
78/// Neither shape is a legal URL or path character outside template engines,
79/// so the skip is generic across frameworks rather than gated on a plugin.
80/// Returns `true` for any `src` / `href` value that contains either marker.
81pub(crate) fn is_template_placeholder(value: &str) -> bool {
82    value.contains("{{") || value.contains("###")
83}
84
85/// Extract local (non-remote) asset references from HTML-like markup.
86///
87/// Returns the raw `src`/`href` strings (trimmed, remote URLs filtered). Shared
88/// between the HTML file parser and the JS/TS visitor's tagged template
89/// literal override so `` html`<script src="...">` `` in Hono/lit-html/htm
90/// layouts emits the same asset edges as a real `.html` file.
91pub(crate) fn collect_asset_refs(source: &str) -> Vec<String> {
92    let stripped = HTML_COMMENT_RE.replace_all(source, "");
93    let mut refs: Vec<String> = Vec::new();
94
95    for cap in SCRIPT_SRC_RE.captures_iter(&stripped) {
96        if let Some(m) = cap.get(1) {
97            let src = m.as_str().trim();
98            if !src.is_empty() && !is_remote_url(src) && !is_template_placeholder(src) {
99                refs.push(src.to_string());
100            }
101        }
102    }
103
104    for cap in LINK_HREF_RE.captures_iter(&stripped) {
105        if let Some(m) = cap.get(2) {
106            let href = m.as_str().trim();
107            if !href.is_empty() && !is_remote_url(href) && !is_template_placeholder(href) {
108                refs.push(href.to_string());
109            }
110        }
111    }
112    for cap in LINK_HREF_REVERSE_RE.captures_iter(&stripped) {
113        if let Some(m) = cap.get(1) {
114            let href = m.as_str().trim();
115            if !href.is_empty() && !is_remote_url(href) && !is_template_placeholder(href) {
116                refs.push(href.to_string());
117            }
118        }
119    }
120
121    refs
122}
123
124/// Parse an HTML file, extracting script and stylesheet references as imports.
125#[cfg(test)]
126pub(crate) fn parse_html_to_module(file_id: FileId, source: &str, content_hash: u64) -> ModuleInfo {
127    parse_html_to_module_with_complexity(file_id, source, content_hash, false)
128}
129
130/// Parse an HTML file and optionally compute Angular template complexity.
131pub(crate) fn parse_html_to_module_with_complexity(
132    file_id: FileId,
133    source: &str,
134    content_hash: u64,
135    need_complexity: bool,
136) -> ModuleInfo {
137    let parsed_suppressions = crate::suppress::parse_suppressions_from_source(source);
138
139    // Bare filenames (e.g., `src="app.js"`) are normalized to `./app.js` so
140    // the resolver doesn't misclassify them as npm packages.
141    let mut imports: Vec<ImportInfo> = collect_asset_refs(source)
142        .into_iter()
143        .map(|raw| ImportInfo {
144            source: normalize_asset_url(&raw),
145            imported_name: ImportedName::SideEffect,
146            local_name: String::new(),
147            is_type_only: false,
148            from_style: false,
149            span: Span::default(),
150            source_span: Span::default(),
151        })
152        .collect();
153
154    // Deduplicate: the same asset may be referenced by both <script src> and
155    // <link rel="modulepreload" href> for the same path.
156    imports.sort_unstable_by(|a, b| a.source.cmp(&b.source));
157    imports.dedup_by(|a, b| a.source == b.source);
158
159    // Scan for Angular template syntax ({{ }}, [prop], (event), @if, etc.).
160    //
161    // Bare identifier refs (e.g. `title`, `dataService`, pipe names) are stored
162    // as `MemberAccess` entries with a sentinel object name so the analysis
163    // phase can credit them as members of the component class.
164    //
165    // Static member-access chains (`dataService.getTotal`) where `dataService`
166    // is an unresolved identifier are stored as regular (non-sentinel)
167    // `MemberAccess` entries. The analysis phase resolves these through the
168    // importing component's typed instance bindings (from
169    // `ClassHeritageInfo.instance_bindings`) to credit the target class's
170    // member as used.
171    let template_refs = angular::collect_angular_template_refs(source);
172    let mut member_accesses: Vec<MemberAccess> = template_refs
173        .identifiers
174        .into_iter()
175        .map(|name| MemberAccess {
176            object: ANGULAR_TPL_SENTINEL.to_string(),
177            member: name,
178        })
179        .collect();
180    member_accesses.extend(template_refs.member_accesses);
181
182    let complexity = if need_complexity {
183        crate::template_complexity::compute_angular_template_complexity(source)
184            .into_iter()
185            .collect()
186    } else {
187        Vec::new()
188    };
189
190    ModuleInfo {
191        file_id,
192        exports: Vec::new(),
193        imports,
194        re_exports: Vec::new(),
195        dynamic_imports: Vec::new(),
196        dynamic_import_patterns: Vec::new(),
197        require_calls: Vec::new(),
198        member_accesses,
199        whole_object_uses: Vec::new(),
200        has_cjs_exports: false,
201        has_angular_component_template_url: false,
202        content_hash,
203        suppressions: parsed_suppressions.suppressions,
204        unknown_suppression_kinds: parsed_suppressions.unknown_kinds,
205        unused_import_bindings: Vec::new(),
206        type_referenced_import_bindings: Vec::new(),
207        value_referenced_import_bindings: Vec::new(),
208        line_offsets: fallow_types::extract::compute_line_offsets(source),
209        complexity,
210        flag_uses: Vec::new(),
211        class_heritage: vec![],
212        local_type_declarations: Vec::new(),
213        public_signature_type_references: Vec::new(),
214        namespace_object_aliases: Vec::new(),
215    }
216}
217
218#[cfg(test)]
219mod tests {
220    use super::*;
221
222    // ── is_html_file ─────────────────────────────────────────────
223
224    #[test]
225    fn is_html_file_html() {
226        assert!(is_html_file(Path::new("index.html")));
227    }
228
229    #[test]
230    fn is_html_file_nested() {
231        assert!(is_html_file(Path::new("pages/about.html")));
232    }
233
234    #[test]
235    fn is_html_file_rejects_htm() {
236        assert!(!is_html_file(Path::new("index.htm")));
237    }
238
239    #[test]
240    fn is_html_file_rejects_js() {
241        assert!(!is_html_file(Path::new("app.js")));
242    }
243
244    #[test]
245    fn is_html_file_rejects_ts() {
246        assert!(!is_html_file(Path::new("app.ts")));
247    }
248
249    #[test]
250    fn is_html_file_rejects_vue() {
251        assert!(!is_html_file(Path::new("App.vue")));
252    }
253
254    // ── is_remote_url ────────────────────────────────────────────
255
256    #[test]
257    fn remote_url_http() {
258        assert!(is_remote_url("http://example.com/script.js"));
259    }
260
261    #[test]
262    fn remote_url_https() {
263        assert!(is_remote_url("https://cdn.example.com/style.css"));
264    }
265
266    #[test]
267    fn remote_url_protocol_relative() {
268        assert!(is_remote_url("//cdn.example.com/lib.js"));
269    }
270
271    #[test]
272    fn remote_url_data() {
273        assert!(is_remote_url("data:text/javascript;base64,abc"));
274    }
275
276    #[test]
277    fn local_relative_not_remote() {
278        assert!(!is_remote_url("./src/entry.js"));
279    }
280
281    #[test]
282    fn local_root_relative_not_remote() {
283        assert!(!is_remote_url("/src/entry.js"));
284    }
285
286    // ── parse_html_to_module: script src extraction ──────────────
287
288    #[test]
289    fn extracts_module_script_src() {
290        let info = parse_html_to_module(
291            FileId(0),
292            r#"<script type="module" src="./src/entry.js"></script>"#,
293            0,
294        );
295        assert_eq!(info.imports.len(), 1);
296        assert_eq!(info.imports[0].source, "./src/entry.js");
297    }
298
299    #[test]
300    fn extracts_plain_script_src() {
301        let info = parse_html_to_module(
302            FileId(0),
303            r#"<script src="./src/polyfills.js"></script>"#,
304            0,
305        );
306        assert_eq!(info.imports.len(), 1);
307        assert_eq!(info.imports[0].source, "./src/polyfills.js");
308    }
309
310    #[test]
311    fn extracts_multiple_scripts() {
312        let info = parse_html_to_module(
313            FileId(0),
314            r#"
315            <script type="module" src="./src/entry.js"></script>
316            <script src="./src/polyfills.js"></script>
317            "#,
318            0,
319        );
320        assert_eq!(info.imports.len(), 2);
321    }
322
323    #[test]
324    fn skips_inline_script() {
325        let info = parse_html_to_module(FileId(0), r#"<script>console.log("hello");</script>"#, 0);
326        assert!(info.imports.is_empty());
327    }
328
329    #[test]
330    fn skips_handlebars_placeholder_in_script_src() {
331        // Ember `app/index.html` references assets via `{{rootURL}}` /
332        // `{{config.assetsPath}}`, which ember-cli rewrites at build time.
333        // The raw specifier is never a real path, so the HTML asset scanner
334        // must skip it instead of seeding an unresolvable import. Same for
335        // any other Handlebars/Mustache/Jinja2-using site that ships a
336        // checked-in `index.html` template.
337        let info = parse_html_to_module(
338            FileId(0),
339            r#"<script src="{{rootURL}}assets/app.js"></script>
340               <script src="{{config.assetsPath}}vendor.js"></script>"#,
341            0,
342        );
343        assert!(
344            info.imports.is_empty(),
345            "Handlebars-placeholder script srcs should not enter the import graph; got {:?}",
346            info.imports
347        );
348    }
349
350    #[test]
351    fn skips_handlebars_placeholder_in_link_href() {
352        // Same protection for stylesheet / modulepreload `href`s.
353        let info = parse_html_to_module(
354            FileId(0),
355            r#"<link rel="stylesheet" href="{{rootURL}}assets/app.css">"#,
356            0,
357        );
358        assert!(info.imports.is_empty());
359    }
360
361    #[test]
362    fn skips_ember_cli_blueprint_placeholder() {
363        // ember-cli blueprint scaffolds carry `###APPNAME###` / `###DUMMY###`
364        // placeholders in checked-in addon-fixture HTML.
365        let info = parse_html_to_module(
366            FileId(0),
367            r####"<script src="###APPNAME###/app.js"></script>"####,
368            0,
369        );
370        assert!(info.imports.is_empty());
371    }
372
373    #[test]
374    fn extracts_normal_specifier_alongside_placeholders() {
375        // Mixed-mode: a real specifier still extracts even when sibling
376        // specifiers contain template placeholders. Guards against the
377        // filter accidentally short-circuiting the whole scan.
378        let info = parse_html_to_module(
379            FileId(0),
380            r#"<script src="{{rootURL}}assets/app.js"></script>
381               <script src="./src/main.ts"></script>"#,
382            0,
383        );
384        assert_eq!(info.imports.len(), 1);
385        assert_eq!(info.imports[0].source, "./src/main.ts");
386    }
387
388    #[test]
389    fn skips_remote_script() {
390        let info = parse_html_to_module(
391            FileId(0),
392            r#"<script src="https://cdn.example.com/lib.js"></script>"#,
393            0,
394        );
395        assert!(info.imports.is_empty());
396    }
397
398    #[test]
399    fn skips_protocol_relative_script() {
400        let info = parse_html_to_module(
401            FileId(0),
402            r#"<script src="//cdn.example.com/lib.js"></script>"#,
403            0,
404        );
405        assert!(info.imports.is_empty());
406    }
407
408    // ── parse_html_to_module: link href extraction ───────────────
409
410    #[test]
411    fn extracts_stylesheet_link() {
412        let info = parse_html_to_module(
413            FileId(0),
414            r#"<link rel="stylesheet" href="./src/global.css" />"#,
415            0,
416        );
417        assert_eq!(info.imports.len(), 1);
418        assert_eq!(info.imports[0].source, "./src/global.css");
419    }
420
421    #[test]
422    fn extracts_modulepreload_link() {
423        let info = parse_html_to_module(
424            FileId(0),
425            r#"<link rel="modulepreload" href="./src/vendor.js" />"#,
426            0,
427        );
428        assert_eq!(info.imports.len(), 1);
429        assert_eq!(info.imports[0].source, "./src/vendor.js");
430    }
431
432    #[test]
433    fn extracts_link_with_reversed_attrs() {
434        let info = parse_html_to_module(
435            FileId(0),
436            r#"<link href="./src/global.css" rel="stylesheet" />"#,
437            0,
438        );
439        assert_eq!(info.imports.len(), 1);
440        assert_eq!(info.imports[0].source, "./src/global.css");
441    }
442
443    // ── Bare asset references normalized to relative paths ──────
444    // Regression tests for the same class of bug as #99 (Angular templateUrl).
445    // Browsers resolve `src="app.js"` and `href="styles.css"` relative to the
446    // HTML file, so emitting these as bare specifiers would misclassify them
447    // as unlisted npm packages.
448
449    #[test]
450    fn bare_script_src_normalized_to_relative() {
451        let info = parse_html_to_module(FileId(0), r#"<script src="app.js"></script>"#, 0);
452        assert_eq!(info.imports.len(), 1);
453        assert_eq!(info.imports[0].source, "./app.js");
454    }
455
456    #[test]
457    fn bare_module_script_src_normalized_to_relative() {
458        let info = parse_html_to_module(
459            FileId(0),
460            r#"<script type="module" src="main.ts"></script>"#,
461            0,
462        );
463        assert_eq!(info.imports.len(), 1);
464        assert_eq!(info.imports[0].source, "./main.ts");
465    }
466
467    #[test]
468    fn bare_stylesheet_link_href_normalized_to_relative() {
469        let info = parse_html_to_module(
470            FileId(0),
471            r#"<link rel="stylesheet" href="styles.css" />"#,
472            0,
473        );
474        assert_eq!(info.imports.len(), 1);
475        assert_eq!(info.imports[0].source, "./styles.css");
476    }
477
478    #[test]
479    fn bare_link_href_reversed_attrs_normalized_to_relative() {
480        let info = parse_html_to_module(
481            FileId(0),
482            r#"<link href="styles.css" rel="stylesheet" />"#,
483            0,
484        );
485        assert_eq!(info.imports.len(), 1);
486        assert_eq!(info.imports[0].source, "./styles.css");
487    }
488
489    #[test]
490    fn bare_modulepreload_link_href_normalized_to_relative() {
491        let info = parse_html_to_module(
492            FileId(0),
493            r#"<link rel="modulepreload" href="vendor.js" />"#,
494            0,
495        );
496        assert_eq!(info.imports.len(), 1);
497        assert_eq!(info.imports[0].source, "./vendor.js");
498    }
499
500    #[test]
501    fn bare_asset_with_subdir_normalized_to_relative() {
502        let info = parse_html_to_module(FileId(0), r#"<script src="assets/app.js"></script>"#, 0);
503        assert_eq!(info.imports.len(), 1);
504        assert_eq!(info.imports[0].source, "./assets/app.js");
505    }
506
507    #[test]
508    fn root_absolute_script_src_unchanged() {
509        // `/src/main.ts` is a web convention (Vite root-relative) and must
510        // stay absolute so the resolver's HTML special case applies.
511        let info = parse_html_to_module(FileId(0), r#"<script src="/src/main.ts"></script>"#, 0);
512        assert_eq!(info.imports.len(), 1);
513        assert_eq!(info.imports[0].source, "/src/main.ts");
514    }
515
516    #[test]
517    fn parent_relative_script_src_unchanged() {
518        let info = parse_html_to_module(
519            FileId(0),
520            r#"<script src="../shared/vendor.js"></script>"#,
521            0,
522        );
523        assert_eq!(info.imports.len(), 1);
524        assert_eq!(info.imports[0].source, "../shared/vendor.js");
525    }
526
527    #[test]
528    fn skips_preload_link() {
529        let info = parse_html_to_module(
530            FileId(0),
531            r#"<link rel="preload" href="./src/font.woff2" as="font" />"#,
532            0,
533        );
534        assert!(info.imports.is_empty());
535    }
536
537    #[test]
538    fn skips_icon_link() {
539        let info =
540            parse_html_to_module(FileId(0), r#"<link rel="icon" href="./favicon.ico" />"#, 0);
541        assert!(info.imports.is_empty());
542    }
543
544    #[test]
545    fn skips_remote_stylesheet() {
546        let info = parse_html_to_module(
547            FileId(0),
548            r#"<link rel="stylesheet" href="https://fonts.googleapis.com/css" />"#,
549            0,
550        );
551        assert!(info.imports.is_empty());
552    }
553
554    // ── HTML comment stripping ───────────────────────────────────
555
556    #[test]
557    fn skips_commented_out_script() {
558        let info = parse_html_to_module(
559            FileId(0),
560            r#"<!-- <script src="./old.js"></script> -->
561            <script src="./new.js"></script>"#,
562            0,
563        );
564        assert_eq!(info.imports.len(), 1);
565        assert_eq!(info.imports[0].source, "./new.js");
566    }
567
568    #[test]
569    fn skips_commented_out_link() {
570        let info = parse_html_to_module(
571            FileId(0),
572            r#"<!-- <link rel="stylesheet" href="./old.css" /> -->
573            <link rel="stylesheet" href="./new.css" />"#,
574            0,
575        );
576        assert_eq!(info.imports.len(), 1);
577        assert_eq!(info.imports[0].source, "./new.css");
578    }
579
580    // ── Multi-line attributes ────────────────────────────────────
581
582    #[test]
583    fn handles_multiline_script_tag() {
584        let info = parse_html_to_module(
585            FileId(0),
586            "<script\n  type=\"module\"\n  src=\"./src/entry.js\"\n></script>",
587            0,
588        );
589        assert_eq!(info.imports.len(), 1);
590        assert_eq!(info.imports[0].source, "./src/entry.js");
591    }
592
593    #[test]
594    fn handles_multiline_link_tag() {
595        let info = parse_html_to_module(
596            FileId(0),
597            "<link\n  rel=\"stylesheet\"\n  href=\"./src/global.css\"\n/>",
598            0,
599        );
600        assert_eq!(info.imports.len(), 1);
601        assert_eq!(info.imports[0].source, "./src/global.css");
602    }
603
604    // ── Full HTML document ───────────────────────────────────────
605
606    #[test]
607    fn full_vite_html() {
608        let info = parse_html_to_module(
609            FileId(0),
610            r#"<!doctype html>
611<html>
612  <head>
613    <link rel="stylesheet" href="./src/global.css" />
614    <link rel="icon" href="/favicon.ico" />
615  </head>
616  <body>
617    <div id="app"></div>
618    <script type="module" src="./src/entry.js"></script>
619  </body>
620</html>"#,
621            0,
622        );
623        assert_eq!(info.imports.len(), 2);
624        let sources: Vec<&str> = info.imports.iter().map(|i| i.source.as_str()).collect();
625        assert!(sources.contains(&"./src/global.css"));
626        assert!(sources.contains(&"./src/entry.js"));
627    }
628
629    // ── Edge cases ───────────────────────────────────────────────
630
631    #[test]
632    fn empty_html() {
633        let info = parse_html_to_module(FileId(0), "", 0);
634        assert!(info.imports.is_empty());
635    }
636
637    #[test]
638    fn html_with_no_assets() {
639        let info = parse_html_to_module(
640            FileId(0),
641            r"<!doctype html><html><body><h1>Hello</h1></body></html>",
642            0,
643        );
644        assert!(info.imports.is_empty());
645    }
646
647    #[test]
648    fn single_quoted_attributes() {
649        let info = parse_html_to_module(FileId(0), r"<script src='./src/entry.js'></script>", 0);
650        assert_eq!(info.imports.len(), 1);
651        assert_eq!(info.imports[0].source, "./src/entry.js");
652    }
653
654    #[test]
655    fn all_imports_are_side_effect() {
656        let info = parse_html_to_module(
657            FileId(0),
658            r#"<script src="./entry.js"></script>
659            <link rel="stylesheet" href="./style.css" />"#,
660            0,
661        );
662        for imp in &info.imports {
663            assert!(matches!(imp.imported_name, ImportedName::SideEffect));
664            assert!(imp.local_name.is_empty());
665            assert!(!imp.is_type_only);
666        }
667    }
668
669    #[test]
670    fn suppression_comments_extracted() {
671        let info = parse_html_to_module(
672            FileId(0),
673            "<!-- fallow-ignore-file -->\n<script src=\"./entry.js\"></script>",
674            0,
675        );
676        // HTML comments use <!-- --> not //, so suppression parsing
677        // from source text won't find standard JS-style comments.
678        // This is expected; HTML suppression is not supported.
679        assert_eq!(info.imports.len(), 1);
680    }
681
682    // ── Angular template scanning ──────────────────────────────
683
684    #[test]
685    fn angular_template_extracts_member_refs() {
686        let info = parse_html_to_module(
687            FileId(0),
688            "<h1>{{ title() }}</h1>\n\
689             <p [class.highlighted]=\"isHighlighted\">{{ greeting() }}</p>\n\
690             <button (click)=\"onButtonClick()\">Toggle</button>",
691            0,
692        );
693        let names: rustc_hash::FxHashSet<&str> = info
694            .member_accesses
695            .iter()
696            .filter(|a| a.object == ANGULAR_TPL_SENTINEL)
697            .map(|a| a.member.as_str())
698            .collect();
699        assert!(names.contains("title"), "should contain 'title'");
700        assert!(
701            names.contains("isHighlighted"),
702            "should contain 'isHighlighted'"
703        );
704        assert!(names.contains("greeting"), "should contain 'greeting'");
705        assert!(
706            names.contains("onButtonClick"),
707            "should contain 'onButtonClick'"
708        );
709    }
710
711    #[test]
712    fn plain_html_no_angular_refs() {
713        let info = parse_html_to_module(
714            FileId(0),
715            "<!doctype html><html><body><h1>Hello</h1></body></html>",
716            0,
717        );
718        assert!(info.member_accesses.is_empty());
719    }
720}
fallow_extract/html.rs

fallow_extract/
html.rs
