bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir_expand/src/input.rs')
-rw-r--r--crates/hir_expand/src/input.rs120
1 files changed, 0 insertions, 120 deletions
diff --git a/crates/hir_expand/src/input.rs b/crates/hir_expand/src/input.rs
deleted file mode 100644
index 0ad48a470b..0000000000
--- a/crates/hir_expand/src/input.rs
+++ /dev/null
@@ -1,120 +0,0 @@
-//! Macro input conditioning.
-
-use syntax::{
- ast::{self, make, AttrsOwner},
- AstNode, SyntaxNode,
-};
-
-use crate::{
- name::{name, AsName},
- MacroCallKind,
-};
-
-pub(crate) fn process_macro_input(macro_call_kind: &MacroCallKind, node: SyntaxNode) -> SyntaxNode {
- match macro_call_kind {
- MacroCallKind::FnLike { .. } => node,
- MacroCallKind::Derive { derive_attr_index, .. } => {
- let item = match ast::Item::cast(node.clone()) {
- Some(item) => item,
- None => return node,
- };
-
- remove_derives_up_to(item, *derive_attr_index as usize).syntax().clone()
- }
- MacroCallKind::Attr { invoc_attr_index, .. } => {
- let item = match ast::Item::cast(node.clone()) {
- Some(item) => item,
- None => return node,
- };
-
- remove_attr_invoc(item, *invoc_attr_index as usize).syntax().clone()
- }
- }
-}
-
-/// Removes `#[derive]` attributes from `item`, up to `attr_index`.
-fn remove_derives_up_to(item: ast::Item, attr_index: usize) -> ast::Item {
- let item = item.clone_for_update();
- for attr in item.attrs().take(attr_index + 1) {
- if let Some(name) =
- attr.path().and_then(|path| path.as_single_segment()).and_then(|seg| seg.name_ref())
- {
- if name.as_name() == name![derive] {
- replace_attr(&item, &attr);
- }
- }
- }
- item
-}
-
-/// Removes the attribute invoking an attribute macro from `item`.
-fn remove_attr_invoc(item: ast::Item, attr_index: usize) -> ast::Item {
- let item = item.clone_for_update();
- let attr = item
- .attrs()
- .nth(attr_index)
- .unwrap_or_else(|| panic!("cannot find attribute #{}", attr_index));
- replace_attr(&item, &attr);
- item
-}
-
-fn replace_attr(item: &ast::Item, attr: &ast::Attr) {
- let syntax_index = attr.syntax().index();
- let ws = make::tokens::whitespace(&" ".repeat(u32::from(attr.syntax().text().len()) as usize));
- item.syntax().splice_children(syntax_index..syntax_index + 1, vec![ws.into()]);
-}
-
-#[cfg(test)]
-mod tests {
- use base_db::{fixture::WithFixture, SourceDatabase};
- use expect_test::{expect, Expect};
-
- use crate::test_db::TestDB;
-
- use super::*;
-
- fn test_remove_derives_up_to(attr: usize, ra_fixture: &str, expect: Expect) {
- let (db, file_id) = TestDB::with_single_file(ra_fixture);
- let parsed = db.parse(file_id);
-
- let mut items: Vec<_> =
- parsed.syntax_node().descendants().filter_map(ast::Item::cast).collect();
- assert_eq!(items.len(), 1);
-
- let item = remove_derives_up_to(items.pop().unwrap(), attr);
- let res: String =
- item.syntax().children_with_tokens().map(|e| format!("{:?}\n", e)).collect();
- expect.assert_eq(&res);
- }
-
- #[test]
- fn remove_derive() {
- test_remove_derives_up_to(
- 2,
- r#"
-#[allow(unused)]
-#[derive(Copy)]
-#[derive(Hello)]
-#[derive(Clone)]
-struct A {
- bar: u32
-}
- "#,
- expect![[r#"
- Node([email protected])
- Token([email protected] "\n")
- Token([email protected] " ")
- Token([email protected] "\n")
- Token([email protected] " ")
- Token([email protected] "\n")
- Node([email protected])
- Token([email protected] "\n")
- Token([email protected] "struct")
- Token([email protected] " ")
- Node([email protected])
- Token([email protected] " ")
- Node([email protected])
- "#]],
- );
- }
-}