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-rw-r--r--crates/ide/src/display.rs81
1 files changed, 1 insertions, 80 deletions
diff --git a/crates/ide/src/display.rs b/crates/ide/src/display.rs
index 2484dbbf1..0650915c5 100644
--- a/crates/ide/src/display.rs
+++ b/crates/ide/src/display.rs
@@ -4,87 +4,8 @@
4mod navigation_target; 4mod navigation_target;
5mod short_label; 5mod short_label;
6 6
7use syntax::{
8 ast::{self, AstNode, AttrsOwner, GenericParamsOwner, NameOwner},
9 SyntaxKind::{ATTR, COMMENT},
10};
11
12use ast::VisibilityOwner;
13use stdx::format_to;
14
15pub use navigation_target::NavigationTarget; 7pub use navigation_target::NavigationTarget;
16pub(crate) use navigation_target::{ToNav, TryToNav}; 8pub(crate) use navigation_target::{ToNav, TryToNav};
17pub(crate) use short_label::ShortLabel; 9pub(crate) use short_label::ShortLabel;
18 10
19pub(crate) fn function_declaration(node: &ast::Fn) -> String { 11pub(crate) use syntax::display::{function_declaration, macro_label};
20 let mut buf = String::new();
21 if let Some(vis) = node.visibility() {
22 format_to!(buf, "{} ", vis);
23 }
24 if node.async_token().is_some() {
25 format_to!(buf, "async ");
26 }
27 if node.const_token().is_some() {
28 format_to!(buf, "const ");
29 }
30 if node.unsafe_token().is_some() {
31 format_to!(buf, "unsafe ");
32 }
33 if let Some(abi) = node.abi() {
34 // Keyword `extern` is included in the string.
35 format_to!(buf, "{} ", abi);
36 }
37 if let Some(name) = node.name() {
38 format_to!(buf, "fn {}", name)
39 }
40 if let Some(type_params) = node.generic_param_list() {
41 format_to!(buf, "{}", type_params);
42 }
43 if let Some(param_list) = node.param_list() {
44 let params: Vec<String> = param_list
45 .self_param()
46 .into_iter()
47 .map(|self_param| self_param.to_string())
48 .chain(param_list.params().map(|param| param.to_string()))
49 .collect();
50 // Useful to inline parameters
51 format_to!(buf, "({})", params.join(", "));
52 }
53 if let Some(ret_type) = node.ret_type() {
54 if ret_type.ty().is_some() {
55 format_to!(buf, " {}", ret_type);
56 }
57 }
58 if let Some(where_clause) = node.where_clause() {
59 format_to!(buf, "\n{}", where_clause);
60 }
61 buf
62}
63
64pub(crate) fn const_label(node: &ast::Const) -> String {
65 let label: String = node
66 .syntax()
67 .children_with_tokens()
68 .filter(|child| !(child.kind() == COMMENT || child.kind() == ATTR))
69 .map(|node| node.to_string())
70 .collect();
71
72 label.trim().to_owned()
73}
74
75pub(crate) fn type_label(node: &ast::TypeAlias) -> String {
76 let label: String = node
77 .syntax()
78 .children_with_tokens()
79 .filter(|child| !(child.kind() == COMMENT || child.kind() == ATTR))
80 .map(|node| node.to_string())
81 .collect();
82
83 label.trim().to_owned()
84}
85
86pub(crate) fn macro_label(node: &ast::MacroCall) -> String {
87 let name = node.name().map(|name| name.syntax().text().to_string()).unwrap_or_default();
88 let vis = if node.has_atom_attr("macro_export") { "#[macro_export]\n" } else { "" };
89 format!("{}macro_rules! {}", vis, name)
90}