diff --git a/copy_server_to_ide.sh b/copy_server_to_ide.sh
index a1ac54e..5b70211 100755
--- a/copy_server_to_ide.sh
+++ b/copy_server_to_ide.sh
@@ -3,5 +3,5 @@
 cargo test --release --package digital-lsp --lib -- core::primitive_parser::tests::gen_primitive_bin --exact --show-output --nocapture
 mkdir -p /home/dide/project/Digital-IDE/resources/dide-lsp/static/xilinx
 cp target/primitive.bin /home/dide/project/Digital-IDE/resources/dide-lsp/static/xilinx
-cargo build --release
-cp target/release/digital-lsp /home/dide/project/Digital-IDE/resources/dide-lsp/server/0.4.0/
\ No newline at end of file
+#cargo build --release
+#cp target/release/digital-lsp /home/dide/project/Digital-IDE/resources/dide-lsp/server/0.4.0/
diff --git a/src/diagnostics/mod.rs b/src/diagnostics/mod.rs
index c9b82a5..8f54290 100644
--- a/src/diagnostics/mod.rs
+++ b/src/diagnostics/mod.rs
@@ -6,6 +6,10 @@ use std::process::{Command, Stdio};
 use tower_lsp::lsp_types::*;
 use walkdir::DirEntry;
 
+mod modelsim;
+mod verible;
+mod verilator;
+mod vivado;
 
 pub fn get_diagnostics(
     uri: Url,
diff --git a/src/diagnostics/modelsim.rs b/src/diagnostics/modelsim.rs
new file mode 100644
index 0000000..e69de29
diff --git a/src/diagnostics/verible.rs b/src/diagnostics/verible.rs
new file mode 100644
index 0000000..e69de29
diff --git a/src/diagnostics/verilator.rs b/src/diagnostics/verilator.rs
new file mode 100644
index 0000000..e69de29
diff --git a/src/diagnostics/vivado.rs b/src/diagnostics/vivado.rs
new file mode 100644
index 0000000..49e8b37
--- /dev/null
+++ b/src/diagnostics/vivado.rs
@@ -0,0 +1,5 @@
+
+
+pub fn provide_diagnostics() {
+
+}
\ No newline at end of file
diff --git a/src/hover/feature.rs b/src/hover/feature.rs
index 009ba50..b5bc1ae 100644
--- a/src/hover/feature.rs
+++ b/src/hover/feature.rs
@@ -10,6 +10,9 @@ use crate::{core::{self, hdlparam::{Define, FastHdlparam}, primitive_parser::Pri
 use super::{get_language_id_by_path_str, get_word_range_at_position, resolve_path, to_escape_path};
 
 /// 将 4'b0011 分解为 ("b", "0011")
+/// 需要支持的格式：
+/// - `4'b0011`
+/// - `8'b0000_1111`
 fn parse_digit_string(digit_string: &str) -> Option<(&str, &str)> {
     if digit_string.len() == 0 {
         return None;
@@ -29,7 +32,14 @@ fn parse_digit_string(digit_string: &str) -> Option<(&str, &str)> {
                 return None;
             }
 
-            return Some((tag.unwrap(), digit.unwrap()));
+            // 此时，4'b0011 被自动分割成了 
+            // tag: b
+            // digit: 0011
+            // 前面的 4 被丢弃了，因为 4 可以通过 0011 的长度判断出来
+            let tag = tag.unwrap();
+            let digit = digit.unwrap();
+
+            return Some((tag, digit));
         },
         None => return None
     };
@@ -46,13 +56,20 @@ fn convert_tag_to_radix(tag: &str) -> Option<u32> {
 }
 
 /// 计算出有符号和无符号下的表示
+/// - `tag`: b, o, h 这些代表进制的字符，
+/// - `digit_string`: 进制数
+/// 
+/// 需要支持的格式：
+/// - `4'b0011`
+/// - `8'b0000_1111`
 fn convert_to_sign_unsign<'a>(tag: &'a str, digit_string: &str) -> Option<(String, String)> {
     let radix = convert_tag_to_radix(tag);
     if radix.is_none() {
         return None;
     }
     let radix = radix.unwrap();
-    let unsigned_decimal = u128::from_str_radix(digit_string, radix);
+    let raw_digit_string = digit_string.replace("_", "");
+    let unsigned_decimal = u128::from_str_radix(&raw_digit_string, radix);
     
     if unsigned_decimal.is_err() {
         return None;
@@ -87,7 +104,7 @@ pub fn hover_format_digit(line: &RopeSlice, pos: Position, language_id: &str) ->
         if let Some((signed_string, unsigned_string)) = convert_to_sign_unsign(tag, digit) {
             let digit_title = LanguageString {
                 language: language_id.to_string(),
-                value: format!("{}'{}{}", digit.len(), tag, digit)
+                value: format!("{}'{}{}", digit.replace("_", "").len(), tag, digit)
             };
             let markdown = HoverContents::Array(vec![
                 MarkedString::LanguageString(digit_title),
diff --git a/src/server.rs b/src/server.rs
index a4c14c9..6e67f94 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -284,8 +284,7 @@ impl LanguageServer for Backend {
         //     .await;
         // } else {
             let diagnostics = self.server.did_open(params);        
-            self.client
-                .publish_diagnostics(
+            self.client.publish_diagnostics(
                     diagnostics.uri,
                     diagnostics.diagnostics,
                     diagnostics.version,
diff --git a/src/sources.rs b/src/sources.rs
index 52cfcfd..d0c3de7 100644
--- a/src/sources.rs
+++ b/src/sources.rs
@@ -52,12 +52,19 @@ impl LSPServer {
         } else {
             self.srcs.add(self, document);
         }
-        // diagnostics
+        
+        // 生成诊断信息
         let urls = self.srcs.names.read().unwrap().keys().cloned().collect();
         let file_id = self.srcs.get_id(&uri);
         if let Some(file) = self.srcs.get_file(file_id) {
             let file = file.read().unwrap();
-            get_diagnostics(uri, &file.text, urls, &self.conf.read().unwrap())
+            let diagnostics = get_diagnostics(
+                uri, 
+                &file.text, 
+                urls, 
+                &self.conf.read().unwrap()
+            );
+            diagnostics
         } else {
             PublishDiagnosticsParams {
                 uri,