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use deno_ast::Diagnostic;
use deno_ast::MediaType;
use deno_ast::ParsedSource;
use deno_ast::SourceTextInfo;
use deno_core::ModuleSpecifier;
use once_cell::sync::OnceCell;
use std::sync::Arc;
use super::analysis;
use super::text::LineIndex;
#[derive(Debug)]
struct DocumentSourceInner {
specifier: ModuleSpecifier,
media_type: MediaType,
text_info: SourceTextInfo,
parsed_module: OnceCell<Result<ParsedSource, Diagnostic>>,
line_index: LineIndex,
}
/// Immutable information about a document.
#[derive(Debug, Clone)]
pub struct DocumentSource {
inner: Arc<DocumentSourceInner>,
}
impl DocumentSource {
pub fn new(
specifier: &ModuleSpecifier,
media_type: MediaType,
text: Arc<String>,
line_index: LineIndex,
) -> Self {
Self {
inner: Arc::new(DocumentSourceInner {
specifier: specifier.clone(),
media_type,
text_info: SourceTextInfo::new(text),
parsed_module: OnceCell::new(),
line_index,
}),
}
}
pub fn text_info(&self) -> &SourceTextInfo {
&self.inner.text_info
}
pub fn line_index(&self) -> &LineIndex {
&self.inner.line_index
}
pub fn module(&self) -> Option<&Result<ParsedSource, Diagnostic>> {
let is_parsable = matches!(
self.inner.media_type,
MediaType::JavaScript
| MediaType::Jsx
| MediaType::TypeScript
| MediaType::Tsx
| MediaType::Dts,
);
if is_parsable {
// lazily parse the module
Some(self.inner.parsed_module.get_or_init(|| {
analysis::parse_module(
&self.inner.specifier,
self.inner.text_info.clone(),
self.inner.media_type,
)
}))
} else {
None
}
}
}
|
