diff --git a/src/core/sv_parser.rs b/src/core/sv_parser.rs
index 96f2abe..acefe27 100644
--- a/src/core/sv_parser.rs
+++ b/src/core/sv_parser.rs
@@ -361,7 +361,7 @@ pub fn make_fast_from_syntaxtree(
 
 // 获取 port 或者 param 的 range
 /// 返回的四元组：(start_line, start_character, end_line, end_character)
-fn get_pp_range(doc: &Rope, node: RefNode) -> Range {
+pub fn get_pp_range(doc: &Rope, node: RefNode) -> Range {
     if let Some(locate) = get_first_last_locate(node) {
         Range {
             start: get_position(doc, locate.0, 0),
@@ -391,7 +391,7 @@ fn get_first_last_locate(node: RefNode) -> Option<(Locate, Locate)> {
     }
 }
 
-fn get_instance_params(syntax_tree: &SyntaxTree, doc: &Rope, node: RefNode) -> Vec<InstParameter> {
+pub fn get_instance_params(syntax_tree: &SyntaxTree, doc: &Rope, node: RefNode) -> Vec<InstParameter> {
     let mut parameters = Vec::new();
 
     for list in node {
@@ -456,7 +456,7 @@ fn get_instance_params(syntax_tree: &SyntaxTree, doc: &Rope, node: RefNode) -> V
     parameters
 }
 
-fn get_instance_ports(syntax_tree: &SyntaxTree, doc: &Rope, node: RefNode) -> Vec<InstPort> {
+pub fn get_instance_ports(syntax_tree: &SyntaxTree, doc: &Rope, node: RefNode) -> Vec<InstPort> {
     let mut ports = Vec::new();
     for list in node {
         match unwrap_node!(list, ListOfPortConnectionsNamed, ListOfPortConnectionsOrdered, InputTerminal, OutputTerminal) {
@@ -633,7 +633,7 @@ fn parse_expression(syntax_tree: &SyntaxTree, x: &sv_parser::NeedParseExpression
     }
 } 
       
-fn get_identifier(node: RefNode) -> Option<Locate> {
+pub fn get_identifier(node: RefNode) -> Option<Locate> {
     // unwrap_node! can take multiple types
     match unwrap_node!(node, SimpleIdentifier, EscapedIdentifier, Keyword) {
         Some(RefNode::SimpleIdentifier(x)) => {
@@ -649,7 +649,7 @@ fn get_identifier(node: RefNode) -> Option<Locate> {
     }
 }
 
-fn get_position(doc: &Rope, locate: Locate, offset: usize) -> Position {
+pub fn get_position(doc: &Rope, locate: Locate, offset: usize) -> Position {
     let byte = locate.offset + offset;
     let pos = doc.byte_to_pos(byte);
     hdlparam::Position::from_lsp_position(&pos)