bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide/src/hover.rs')
-rw-r--r--crates/ide/src/hover.rs60
1 files changed, 59 insertions, 1 deletions
diff --git a/crates/ide/src/hover.rs b/crates/ide/src/hover.rs
index 5ad119ace8..d06577d3db 100644
--- a/crates/ide/src/hover.rs
+++ b/crates/ide/src/hover.rs
@@ -15,7 +15,7 @@ use ide_db::{
FxIndexSet, RootDatabase,
};
use itertools::Itertools;
-use syntax::{ast, AstNode, SyntaxKind::*, SyntaxNode, T};
+use syntax::{ast, match_ast, AstNode, AstToken, SyntaxKind::*, SyntaxNode, T};
use crate::{
doc_links::token_as_doc_comment,
@@ -268,6 +268,64 @@ fn hover_simple(
let c = token.parent().and_then(|x| x.parent()).and_then(ast::ClosureExpr::cast)?;
render::closure_expr(sema, config, c)
})
+ })
+ // tokens
+ .or_else(|| {
+ let mut res = HoverResult::default();
+ match_ast! {
+ match original_token {
+ ast::String(string) => {
+ res.markup = Markup::fenced_block_text(format_args!("{}", string.value()?));
+ },
+ ast::ByteString(string) => {
+ res.markup = Markup::fenced_block_text(format_args!("{:?}", string.value()?));
+ },
+ ast::CString(string) => {
+ let val = string.value()?;
+ res.markup = Markup::fenced_block_text(format_args!("{}", std::str::from_utf8(val.as_ref()).ok()?));
+ },
+ ast::Char(char) => {
+ let mut res = HoverResult::default();
+ res.markup = Markup::fenced_block_text(format_args!("{}", char.value()?));
+ },
+ ast::Byte(byte) => {
+ res.markup = Markup::fenced_block_text(format_args!("0x{:X}", byte.value()?));
+ },
+ ast::FloatNumber(num) => {
+ res.markup = if num.suffix() == Some("f32") {
+ match num.value_f32() {
+ Ok(num) => {
+ Markup::fenced_block_text(format_args!("{num} (bits: 0x{:X})", num.to_bits()))
+ },
+ Err(e) => {
+ Markup::fenced_block_text(format_args!("{e}"))
+ },
+ }
+ } else {
+ match num.value() {
+ Ok(num) => {
+ Markup::fenced_block_text(format_args!("{num} (bits: 0x{:X})", num.to_bits()))
+ },
+ Err(e) => {
+ Markup::fenced_block_text(format_args!("{e}"))
+ },
+ }
+ };
+ },
+ ast::IntNumber(num) => {
+ res.markup = match num.value() {
+ Ok(num) => {
+ Markup::fenced_block_text(format_args!("{num} (0x{num:X}|0x{num:b})"))
+ },
+ Err(e) => {
+ Markup::fenced_block_text(format_args!("{e}"))
+ },
+ };
+ },
+ _ => return None
+ }
+ }
+ Some(res)
});
result.map(|mut res: HoverResult| {