diff options
Diffstat (limited to 'crates/ra_ide/src/syntax_highlighting.rs')
-rw-r--r-- | crates/ra_ide/src/syntax_highlighting.rs | 100 |
1 files changed, 3 insertions, 97 deletions
diff --git a/crates/ra_ide/src/syntax_highlighting.rs b/crates/ra_ide/src/syntax_highlighting.rs index c0f13f171..4e95b9ce5 100644 --- a/crates/ra_ide/src/syntax_highlighting.rs +++ b/crates/ra_ide/src/syntax_highlighting.rs | |||
@@ -1,9 +1,9 @@ | |||
1 | //! FIXME: write short doc here | 1 | //! FIXME: write short doc here |
2 | 2 | ||
3 | mod highlight; | 3 | mod highlight; |
4 | mod html; | ||
4 | 5 | ||
5 | use hir::{Name, Semantics}; | 6 | use hir::{Name, Semantics}; |
6 | use ra_db::SourceDatabase; | ||
7 | use ra_ide_db::{ | 7 | use ra_ide_db::{ |
8 | defs::{classify_name, NameDefinition}, | 8 | defs::{classify_name, NameDefinition}, |
9 | RootDatabase, | 9 | RootDatabase, |
@@ -19,6 +19,8 @@ use crate::{references::classify_name_ref, FileId}; | |||
19 | 19 | ||
20 | pub use highlight::{Highlight, HighlightModifier, HighlightModifiers, HighlightTag}; | 20 | pub use highlight::{Highlight, HighlightModifier, HighlightModifiers, HighlightTag}; |
21 | 21 | ||
22 | pub(crate) use html::highlight_as_html; | ||
23 | |||
22 | #[derive(Debug)] | 24 | #[derive(Debug)] |
23 | pub struct HighlightedRange { | 25 | pub struct HighlightedRange { |
24 | pub range: TextRange, | 26 | pub range: TextRange, |
@@ -257,69 +259,6 @@ fn highlight_node( | |||
257 | } | 259 | } |
258 | } | 260 | } |
259 | 261 | ||
260 | pub(crate) fn highlight_as_html(db: &RootDatabase, file_id: FileId, rainbow: bool) -> String { | ||
261 | let parse = db.parse(file_id); | ||
262 | |||
263 | fn rainbowify(seed: u64) -> String { | ||
264 | use rand::prelude::*; | ||
265 | let mut rng = SmallRng::seed_from_u64(seed); | ||
266 | format!( | ||
267 | "hsl({h},{s}%,{l}%)", | ||
268 | h = rng.gen_range::<u16, _, _>(0, 361), | ||
269 | s = rng.gen_range::<u16, _, _>(42, 99), | ||
270 | l = rng.gen_range::<u16, _, _>(40, 91), | ||
271 | ) | ||
272 | } | ||
273 | |||
274 | let mut ranges = highlight(db, file_id, None); | ||
275 | ranges.sort_by_key(|it| it.range.start()); | ||
276 | // quick non-optimal heuristic to intersect token ranges and highlighted ranges | ||
277 | let mut frontier = 0; | ||
278 | let mut could_intersect: Vec<&HighlightedRange> = Vec::new(); | ||
279 | |||
280 | let mut buf = String::new(); | ||
281 | buf.push_str(&STYLE); | ||
282 | buf.push_str("<pre><code>"); | ||
283 | let tokens = parse.tree().syntax().descendants_with_tokens().filter_map(|it| it.into_token()); | ||
284 | for token in tokens { | ||
285 | could_intersect.retain(|it| token.text_range().start() <= it.range.end()); | ||
286 | while let Some(r) = ranges.get(frontier) { | ||
287 | if r.range.start() <= token.text_range().end() { | ||
288 | could_intersect.push(r); | ||
289 | frontier += 1; | ||
290 | } else { | ||
291 | break; | ||
292 | } | ||
293 | } | ||
294 | let text = html_escape(&token.text()); | ||
295 | let ranges = could_intersect | ||
296 | .iter() | ||
297 | .filter(|it| token.text_range().is_subrange(&it.range)) | ||
298 | .collect::<Vec<_>>(); | ||
299 | if ranges.is_empty() { | ||
300 | buf.push_str(&text); | ||
301 | } else { | ||
302 | let classes = ranges | ||
303 | .iter() | ||
304 | .map(|it| it.highlight.to_string().replace('.', " ")) | ||
305 | .collect::<Vec<_>>() | ||
306 | .join(" "); | ||
307 | let binding_hash = ranges.first().and_then(|x| x.binding_hash); | ||
308 | let color = match (rainbow, binding_hash) { | ||
309 | (true, Some(hash)) => format!( | ||
310 | " data-binding-hash=\"{}\" style=\"color: {};\"", | ||
311 | hash, | ||
312 | rainbowify(hash) | ||
313 | ), | ||
314 | _ => "".into(), | ||
315 | }; | ||
316 | buf.push_str(&format!("<span class=\"{}\"{}>{}</span>", classes, color, text)); | ||
317 | } | ||
318 | } | ||
319 | buf.push_str("</code></pre>"); | ||
320 | buf | ||
321 | } | ||
322 | |||
323 | fn highlight_name(db: &RootDatabase, def: NameDefinition) -> Highlight { | 262 | fn highlight_name(db: &RootDatabase, def: NameDefinition) -> Highlight { |
324 | match def { | 263 | match def { |
325 | NameDefinition::Macro(_) => HighlightTag::Macro, | 264 | NameDefinition::Macro(_) => HighlightTag::Macro, |
@@ -348,39 +287,6 @@ fn highlight_name(db: &RootDatabase, def: NameDefinition) -> Highlight { | |||
348 | .into() | 287 | .into() |
349 | } | 288 | } |
350 | 289 | ||
351 | //FIXME: like, real html escaping | ||
352 | fn html_escape(text: &str) -> String { | ||
353 | text.replace("<", "<").replace(">", ">") | ||
354 | } | ||
355 | |||
356 | const STYLE: &str = " | ||
357 | <style> | ||
358 | body { margin: 0; } | ||
359 | pre { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padding: 0.4em; } | ||
360 | |||
361 | .comment { color: #7F9F7F; } | ||
362 | .string { color: #CC9393; } | ||
363 | .field { color: #94BFF3; } | ||
364 | .function { color: #93E0E3; } | ||
365 | .parameter { color: #94BFF3; } | ||
366 | .text { color: #DCDCCC; } | ||
367 | .type { color: #7CB8BB; } | ||
368 | .type.builtin { color: #8CD0D3; } | ||
369 | .type.param { color: #20999D; } | ||
370 | .attribute { color: #94BFF3; } | ||
371 | .literal { color: #BFEBBF; } | ||
372 | .literal.numeric { color: #6A8759; } | ||
373 | .macro { color: #94BFF3; } | ||
374 | .module { color: #AFD8AF; } | ||
375 | .variable { color: #DCDCCC; } | ||
376 | .variable.mut { color: #DCDCCC; text-decoration: underline; } | ||
377 | |||
378 | .keyword { color: #F0DFAF; } | ||
379 | .keyword.unsafe { color: #DFAF8F; } | ||
380 | .keyword.control { color: #F0DFAF; font-weight: bold; } | ||
381 | </style> | ||
382 | "; | ||
383 | |||
384 | #[cfg(test)] | 290 | #[cfg(test)] |
385 | mod tests { | 291 | mod tests { |
386 | use std::fs; | 292 | use std::fs; |