Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide/src/doc_links.rs')
-rw-r--r--crates/ide/src/doc_links.rs67
1 files changed, 66 insertions, 1 deletions
diff --git a/crates/ide/src/doc_links.rs b/crates/ide/src/doc_links.rs
index 36c13fe54e..adaaece719 100644
--- a/crates/ide/src/doc_links.rs
+++ b/crates/ide/src/doc_links.rs
@@ -19,7 +19,12 @@ use ide_db::{
helpers::pick_best_token,
RootDatabase,
};
-use syntax::{ast, match_ast, AstNode, SyntaxKind::*, SyntaxNode, TextRange, T};
+use syntax::{
+ ast::{self, IsString},
+ match_ast, AstNode, AstToken,
+ SyntaxKind::*,
+ SyntaxNode, SyntaxToken, TextRange, TextSize, T,
+};
use crate::{
doc_links::intra_doc_links::{parse_intra_doc_link, strip_prefixes_suffixes},
@@ -220,6 +225,66 @@ pub(crate) fn doc_attributes(
}
}
+pub(crate) struct DocCommentToken {
+ doc_token: SyntaxToken,
+ prefix_len: TextSize,
+}
+
+pub(crate) fn token_as_doc_comment(doc_token: &SyntaxToken) -> Option<DocCommentToken> {
+ (match_ast! {
+ match doc_token {
+ ast::Comment(comment) => TextSize::try_from(comment.prefix().len()).ok(),
+ ast::String(string) => doc_token.ancestors().find_map(ast::Attr::cast)
+ .filter(|attr| attr.simple_name().as_deref() == Some("doc")).and_then(|_| string.open_quote_text_range().map(|it| it.len())),
+ _ => None,
+ }
+ }).map(|prefix_len| DocCommentToken { prefix_len, doc_token: doc_token.clone() })
+}
+
+impl DocCommentToken {
+ pub(crate) fn get_definition_with_descend_at<T>(
+ self,
+ sema: &Semantics<RootDatabase>,
+ offset: TextSize,
+ // Definition, CommentOwner, range of intra doc link in original file
+ mut cb: impl FnMut(Definition, SyntaxNode, TextRange) -> Option<T>,
+ ) -> Option<T> {
+ let DocCommentToken { prefix_len, doc_token } = self;
+ // offset relative to the comments contents
+ let original_start = doc_token.text_range().start();
+ let relative_comment_offset = offset - original_start - prefix_len;
+
+ sema.descend_into_macros_many(doc_token.clone()).into_iter().find_map(|t| {
+ let (node, descended_prefix_len) = match_ast! {
+ match t {
+ ast::Comment(comment) => (t.parent()?, TextSize::try_from(comment.prefix().len()).ok()?),
+ ast::String(string) => (t.ancestors().skip_while(|n| n.kind() != ATTR).nth(1)?, string.open_quote_text_range()?.len()),
+ _ => return None,
+ }
+ };
+ let token_start = t.text_range().start();
+ let abs_in_expansion_offset = token_start + relative_comment_offset + descended_prefix_len;
+
+ let (attributes, def) = doc_attributes(sema, &node)?;
+ let (docs, doc_mapping) = attributes.docs_with_rangemap(sema.db)?;
+ let (in_expansion_range, link, ns) =
+ extract_definitions_from_docs(&docs).into_iter().find_map(|(range, link, ns)| {
+ let mapped = doc_mapping.map(range)?;
+ (mapped.value.contains(abs_in_expansion_offset)).then(|| (mapped.value, link, ns))
+ })?;
+ // get the relative range to the doc/attribute in the expansion
+ let in_expansion_relative_range = in_expansion_range - descended_prefix_len - token_start;
+ // Apply relative range to the original input comment
+ let absolute_range = in_expansion_relative_range + original_start + prefix_len;
+ let def = match resolve_doc_path_for_def(sema.db, def, &link, ns)? {
+ Either::Left(it) => Definition::ModuleDef(it),
+ Either::Right(it) => Definition::Macro(it),
+ };
+ cb(def, node, absolute_range)
+ })
+ }
+}
+
fn broken_link_clone_cb<'a, 'b>(link: BrokenLink<'a>) -> Option<(CowStr<'b>, CowStr<'b>)> {
// These allocations are actually unnecessary but the lifetimes on BrokenLinkCallback are wrong
// this is fixed in the repo but not on the crates.io release yet