bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide_db/src/helpers.rs')
-rw-r--r--crates/ide_db/src/helpers.rs50
1 files changed, 3 insertions, 47 deletions
diff --git a/crates/ide_db/src/helpers.rs b/crates/ide_db/src/helpers.rs
index c355016c5d..cbe4adf1b9 100644
--- a/crates/ide_db/src/helpers.rs
+++ b/crates/ide_db/src/helpers.rs
@@ -9,15 +9,14 @@ pub mod node_ext;
pub mod rust_doc;
pub mod format_string;
-use std::{collections::VecDeque, iter};
+use std::collections::VecDeque;
use base_db::FileId;
-use hir::{ItemInNs, MacroDef, ModuleDef, Name, PathResolution, Semantics};
+use hir::{ItemInNs, MacroDef, ModuleDef, Name, Semantics};
use itertools::Itertools;
use syntax::{
ast::{self, make, HasLoopBody},
- AstNode, AstToken, Direction, SyntaxElement, SyntaxKind, SyntaxToken, TokenAtOffset, WalkEvent,
- T,
+ AstNode, AstToken, SyntaxKind, SyntaxToken, TokenAtOffset, WalkEvent, T,
};
use crate::{defs::Definition, RootDatabase};
@@ -32,49 +31,6 @@ pub fn item_name(db: &RootDatabase, item: ItemInNs) -> Option<Name> {
}
}
-/// Parses and returns the derive path at the cursor position in the given attribute, if it is a derive.
-/// This special case is required because the derive macro is a compiler builtin that discards the input derives.
-///
-/// The returned path is synthesized from TokenTree tokens and as such cannot be used with the [`Semantics`].
-pub fn get_path_in_derive_attr(
- sema: &hir::Semantics<RootDatabase>,
- attr: &ast::Attr,
- cursor: &ast::Ident,
-) -> Option<ast::Path> {
- let path = attr.path()?;
- let tt = attr.token_tree()?;
- if !tt.syntax().text_range().contains_range(cursor.syntax().text_range()) {
- return None;
- }
- let scope = sema.scope(attr.syntax());
- let resolved_attr = sema.resolve_path(&path)?;
- let derive = FamousDefs(sema, scope.krate()).core_macros_builtin_derive()?;
- if PathResolution::Macro(derive) != resolved_attr {
- return None;
- }
- get_path_at_cursor_in_tt(cursor)
-}
-
-/// Parses the path the identifier is part of inside a token tree.
-pub fn get_path_at_cursor_in_tt(cursor: &ast::Ident) -> Option<ast::Path> {
- let cursor = cursor.syntax();
- let first = cursor
- .siblings_with_tokens(Direction::Prev)
- .filter_map(SyntaxElement::into_token)
- .take_while(|tok| tok.kind() != T!['('] && tok.kind() != T![,])
- .last()?;
- let path_tokens = first
- .siblings_with_tokens(Direction::Next)
- .filter_map(SyntaxElement::into_token)
- .take_while(|tok| tok != cursor);
-
- syntax::hacks::parse_expr_from_str(&path_tokens.chain(iter::once(cursor.clone())).join(""))
- .and_then(|expr| match expr {
- ast::Expr::PathExpr(it) => it.path(),
- _ => None,
- })
-}
-
/// Picks the token with the highest rank returned by the passed in function.
pub fn pick_best_token(
tokens: TokenAtOffset<SyntaxToken>,