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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,166 @@ | ||
| use once_cell::sync::Lazy; | ||
| use regex::Captures; | ||
| use rspack_error::miette::{diagnostic, Diagnostic, Severity}; | ||
| use rspack_error::DiagnosticExt; | ||
| use rustc_hash::FxHashMap; | ||
| use swc_core::common::comments::{CommentKind, Comments}; | ||
| use swc_core::common::Span; | ||
|
|
||
| #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] | ||
| pub enum WebpackComment { | ||
| ChunkName, | ||
| Prefetch, | ||
| Preload, | ||
| Ignore, | ||
| } | ||
|
|
||
| pub struct WebpackCommentMap(FxHashMap<WebpackComment, String>); | ||
|
|
||
| impl WebpackCommentMap { | ||
| fn new() -> Self { | ||
| Self(Default::default()) | ||
| } | ||
|
|
||
| fn insert(&mut self, key: WebpackComment, value: String) { | ||
| self.0.insert(key, value); | ||
| } | ||
|
|
||
| pub fn get_webpack_chunk_name(&self) -> Option<&String> { | ||
| self.0.get(&WebpackComment::ChunkName) | ||
| } | ||
|
|
||
| pub fn get_webpack_prefetch(&self) -> Option<&String> { | ||
| self.0.get(&WebpackComment::Prefetch) | ||
| } | ||
|
|
||
| pub fn get_webpack_preload(&self) -> Option<&String> { | ||
| self.0.get(&WebpackComment::Preload) | ||
| } | ||
|
|
||
| pub fn get_webpack_ignore(&self) -> Option<bool> { | ||
| self.0.get(&WebpackComment::Ignore).and_then(|item| { | ||
| if item == "true" { | ||
| Some(true) | ||
| } else if item == "false" { | ||
| Some(false) | ||
| } else { | ||
| None | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| fn add_magic_comment_warning( | ||
| comment_name: &str, | ||
| comment_type: &str, | ||
| captures: &Captures, | ||
| warning_diagnostics: &mut Vec<Box<dyn Diagnostic + Send + Sync>>, | ||
| ) { | ||
| warning_diagnostics.push( | ||
| diagnostic!( | ||
| severity = Severity::Warning, | ||
| "`{comment_name}` expected {comment_type}, but received: {}.", | ||
| captures.get(2).map_or("", |m| m.as_str()) | ||
| ) | ||
| .boxed(), | ||
| ) | ||
| } | ||
|
|
||
| // Using vm.runInNewContext in webpack | ||
| // _0 for name | ||
| // _1 for "xxx" | ||
| // _2 for 'xxx' | ||
| // _3 for `xxx` | ||
| // _4 for number | ||
| // _5 for true/false | ||
| // TODO: regexp/array | ||
| static WEBPACK_MAGIC_COMMENT_REGEXP: Lazy<regex::Regex> = Lazy::new(|| { | ||
| regex::Regex::new(r#"(?P<_0>webpack[a-zA-Z\d_-]+)\s*:\s*("(?P<_1>(\./)?([\w0-9_\-\[\]\(\)]+/)*?[\w0-9_\-\[\]\(\)]+)"|'(?P<_2>(\./)?([\w0-9_\-\[\]\(\)]+/)*?[\w0-9_\-\[\]\(\)]+)'|`(?P<_3>(\./)?([\w0-9_\-\[\]\(\)]+/)*?[\w0-9_\-\[\]\(\)]+)`|(?P<_4>[\d.-]+)|(?P<_5>true|false))"#) | ||
| .expect("invalid regex") | ||
| }); | ||
|
|
||
| pub fn try_extract_webpack_magic_comment( | ||
| comments: &Option<&dyn Comments>, | ||
| span: Span, | ||
| warning_diagnostics: &mut Vec<Box<dyn Diagnostic + Send + Sync>>, | ||
| ) -> WebpackCommentMap { | ||
| let mut result = WebpackCommentMap::new(); | ||
| comments.with_leading(span.lo, |comments| { | ||
| for comment in comments | ||
| .iter() | ||
| .rev() | ||
| .filter(|c| matches!(c.kind, CommentKind::Block)) | ||
| { | ||
| for captures in WEBPACK_MAGIC_COMMENT_REGEXP.captures_iter(&comment.text) { | ||
| if let Some(item_name_match) = captures.name("_0") { | ||
| let item_name = item_name_match.as_str(); | ||
| match item_name { | ||
| "webpackChunkName" => { | ||
| if let Some(item_value_match) = captures | ||
| .name("_1") | ||
| .or(captures.name("_2")) | ||
| .or(captures.name("_3")) | ||
| { | ||
| result.insert( | ||
| WebpackComment::ChunkName, | ||
| item_value_match.as_str().to_string(), | ||
| ); | ||
| } else { | ||
| add_magic_comment_warning(item_name, "a string", &captures, warning_diagnostics); | ||
| } | ||
| } | ||
| "webpackPrefetch" => { | ||
| if let Some(item_value_match) = captures.name("_4").or(captures.name("_5")) { | ||
| result.insert( | ||
| WebpackComment::Prefetch, | ||
| item_value_match.as_str().to_string(), | ||
| ); | ||
| } else { | ||
| add_magic_comment_warning( | ||
| item_name, | ||
| "true or a number", | ||
| &captures, | ||
| warning_diagnostics, | ||
| ); | ||
| } | ||
| } | ||
| "webpackPreload" => { | ||
| if let Some(item_value_match) = captures.name("_4").or(captures.name("_5")) { | ||
| result.insert( | ||
| WebpackComment::Preload, | ||
| item_value_match.as_str().to_string(), | ||
| ); | ||
| } else { | ||
| add_magic_comment_warning( | ||
| item_name, | ||
| "true or a number", | ||
| &captures, | ||
| warning_diagnostics, | ||
| ); | ||
| } | ||
| } | ||
| "webpackIgnore" => { | ||
| if let Some(item_value_match) = captures.name("_5") { | ||
| result.insert( | ||
| WebpackComment::Ignore, | ||
| item_value_match.as_str().to_string(), | ||
| ); | ||
| } else { | ||
| add_magic_comment_warning( | ||
| item_name, | ||
| "true or false", | ||
| &captures, | ||
| warning_diagnostics, | ||
| ); | ||
| } | ||
| } | ||
| _ => { | ||
| // TODO: other magic comment | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| }); | ||
| result | ||
| } |
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