Unnamed repository; edit this file 'description' to name the repository.
Support goto_def for intra-doc-links in macro invocations
| -rw-r--r-- | crates/ide/src/doc_links.rs | 67 | ||||
| -rw-r--r-- | crates/ide/src/goto_definition.rs | 25 | ||||
| -rw-r--r-- | crates/ide/src/hover.rs | 65 |
3 files changed, 82 insertions, 75 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 diff --git a/crates/ide/src/goto_definition.rs b/crates/ide/src/goto_definition.rs index 9acea114d6..911998d69b 100644 --- a/crates/ide/src/goto_definition.rs +++ b/crates/ide/src/goto_definition.rs @@ -1,11 +1,9 @@ use std::convert::TryInto; use crate::{ - display::TryToNav, - doc_links::{doc_attributes, extract_definitions_from_docs, resolve_doc_path_for_def}, - FilePosition, NavigationTarget, RangeInfo, + display::TryToNav, doc_links::token_as_doc_comment, FilePosition, NavigationTarget, RangeInfo, }; -use hir::{AsAssocItem, InFile, ModuleDef, Semantics}; +use hir::{AsAssocItem, ModuleDef, Semantics}; use ide_db::{ base_db::{AnchoredPath, FileId, FileLoader}, defs::Definition, @@ -30,7 +28,7 @@ pub(crate) fn goto_definition( db: &RootDatabase, position: FilePosition, ) -> Option<RangeInfo<Vec<NavigationTarget>>> { - let sema = Semantics::new(db); + let sema = &Semantics::new(db); let file = sema.parse(position.file_id).syntax().clone(); let original_token = pick_best_token(file.token_at_offset(position.offset), |kind| match kind { @@ -38,18 +36,11 @@ pub(crate) fn goto_definition( kind if kind.is_trivia() => 0, _ => 1, })?; - if let Some(_) = ast::Comment::cast(original_token.clone()) { - let parent = original_token.parent()?; - let (attributes, def) = doc_attributes(&sema, &parent)?; - let (docs, doc_mapping) = attributes.docs_with_rangemap(db)?; - let (_, link, ns) = - extract_definitions_from_docs(&docs).into_iter().find(|&(range, ..)| { - doc_mapping.map(range).map_or(false, |InFile { file_id, value: range }| { - file_id == position.file_id.into() && range.contains(position.offset) - }) - })?; - let nav = resolve_doc_path_for_def(db, def, &link, ns)?.try_to_nav(db)?; - return Some(RangeInfo::new(original_token.text_range(), vec![nav])); + if let Some(doc_comment) = token_as_doc_comment(&original_token) { + return doc_comment.get_definition_with_descend_at(sema, position.offset, |def, _, _| { + let nav = def.try_to_nav(db)?; + Some(RangeInfo::new(original_token.text_range(), vec![nav])) + }); } let navs = sema .descend_into_macros_many(original_token.clone()) diff --git a/crates/ide/src/hover.rs b/crates/ide/src/hover.rs index b8b2222a8b..4b7043bd9b 100644 --- a/crates/ide/src/hover.rs +++ b/crates/ide/src/hover.rs @@ -1,4 +1,4 @@ -use std::{convert::TryFrom, iter}; +use std::iter; use either::Either; use hir::{AsAssocItem, HasAttrs, HasSource, HirDisplay, Semantics, TypeInfo}; @@ -14,20 +14,13 @@ use ide_db::{ use itertools::Itertools; use stdx::format_to; use syntax::{ - algo, - ast::{self, IsString}, - display::fn_as_proc_macro_label, - match_ast, AstNode, AstToken, Direction, - SyntaxKind::*, - SyntaxNode, SyntaxToken, TextSize, T, + algo, ast, display::fn_as_proc_macro_label, match_ast, AstNode, Direction, SyntaxKind::*, + SyntaxNode, SyntaxToken, T, }; use crate::{ display::{macro_label, TryToNav}, - doc_links::{ - doc_attributes, extract_definitions_from_docs, remove_links, resolve_doc_path_for_def, - rewrite_links, - }, + doc_links::{remove_links, rewrite_links, token_as_doc_comment}, markdown_remove::remove_markdown, markup::Markup, runnables::{runnable_fn, runnable_mod}, @@ -118,57 +111,15 @@ pub(crate) fn hover( _ => 1, })?; - let descended = sema.descend_into_macros_many(original_token.clone()); - // magic intra doc link handling - // FIXME: Lift this out to some other place, goto def wants this as well - let comment_prefix_len = match_ast! { - match original_token { - ast::Comment(comment) => TextSize::try_from(comment.prefix().len()).ok(), - ast::String(string) => original_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, - } - }; - if let Some(prefix_len) = comment_prefix_len { + if let Some(doc_comment) = token_as_doc_comment(&original_token) { cov_mark::hit!(no_highlight_on_comment_hover); - - // offset relative to the comments contents - let original_start = original_token.text_range().start(); - let relative_comment_offset = offset - original_start - prefix_len; - - return descended.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), - }; + return doc_comment.get_definition_with_descend_at(sema, offset, |def, node, range| { let res = hover_for_definition(sema, file_id, def, &node, config)?; - Some(RangeInfo::new(absolute_range, res)) + Some(RangeInfo::new(range, res)) }); } + let descended = sema.descend_into_macros_many(original_token.clone()); // attributes, require special machinery as they are mere ident tokens // FIXME: Definition should include known lints and the like instead of having this special case here |