fix clippy

src/compiler.rs

@@ -197,7 +197,7 @@ impl ValuePool {
         ret.stringpool
             .resize(self.const_strings.len(), "".to_string());
         for i in &self.const_strings {
-            ret.stringpool[*i.1] = i.0.clone();
+            ret.stringpool[*i.1].clone_from(i.0);
         }
         ret
     }
@@ -424,9 +424,9 @@ mod tests {
     #[test]
     fn test_file_read() {
         let test_file_path = "tests/testdata/compiler/compiler1.txt";
-        let source = std::fs::read_to_string(test_file_path).expect("please run in root dir");
+        let source = fs::read_to_string(test_file_path).expect("please run in root dir");
         let mut t =
-            FileSource::new(std::fs::File::open(test_file_path).expect("please run in root dir"));
+            FileSource::new(fs::File::open(test_file_path).expect("please run in root dir"));
         let mut tmp: Vec<char> = vec![t.read(), t.read()];
         tmp.reverse();
         for i in &tmp {

src/compiler/ast.rs

@@ -672,7 +672,7 @@ impl<'a> AstBuilder<'a> {
         loop {
             let t = self.token_lexer.next_token()?;
             function_body.push((t.clone(), self.token_lexer.compiler_data.context.get_line()));
-            if t.tp == TokenType::RightBigBrace {
+            if t.tp == RightBigBrace {
                 break;
             }
         }
@@ -943,7 +943,7 @@ impl<'a> AstBuilder<'a> {
         let mut is_pop = false;
         loop {
             let t = self.token_lexer.next_token()?;
-            if t.tp == TokenType::RightBigBrace {
+            if t.tp == RightBigBrace {
                 break;
             }
             is_pop = false;

src/compiler/token.rs

@@ -293,7 +293,7 @@ enum NumValue {
 impl<'a> Iterator for TokenLex<'a> {
     type Item = Token;
 
-    fn next(&mut self) -> std::option::Option<Self::Item> {
+    fn next(&mut self) -> Option<Self::Item> {
         match self.next_token() {
             Ok(v) => {
                 if v.tp == TokenType::EndOfFile {

src/tools/tshell.rs

@@ -70,9 +70,9 @@ pub fn tshell() -> RunResult<()> {
                 if i.tp == TokenType::EndOfFile {
                     break;
                 }
-                if i.tp == compiler::token::TokenType::LeftBigBrace {
+                if i.tp == TokenType::LeftBigBrace {
                     cnt += 1;
-                } else if i.tp == compiler::token::TokenType::RightBigBrace {
+                } else if i.tp == TokenType::RightBigBrace {
                     cnt -= 1;
                 }
             }

src/tools/update.rs

@@ -21,6 +21,12 @@ impl Display for UpdateError {
     }
 }
 
+impl Default for UpdateError {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl UpdateError {
     pub fn new() -> Self {
         Self {}

src/tvm/types/data_structure/ac.rs

@@ -66,12 +66,6 @@ impl AcAutomaton {
     }
 
     /// use search function to add your string
-    /// # Example
-    /// ```
-    /// ac.search("hello", 1);
-    /// ac.search("world", 2);
-    /// let ans = ac.get_ans();
-    /// ````
     fn search(&self, _pattern: &str, _id: u32) {}
 
     fn get_ans(&self) -> HashMap<u32, usize> {

src/tvm/types/data_structure/sam.rs

@@ -73,7 +73,7 @@ impl Sam {
                 s._states.push(u);
             } else {
                 let mut clone = Node::new(s._states[last].len + 1);
-                clone.next = s._states[q].next.clone();
+                clone.next.clone_from(&s._states[q].next);
                 clone.link = s._states[q].link;
                 let cloneid = id + 1;
                 loop {

src/tvm/types/trcstr.rs

@@ -34,7 +34,7 @@ impl TrcObj for TrcStr {
         return unsafe {
             match (*other).downcast_ref::<TrcStr>() {
                 Some(v) => {
-                    let val = gc.alloc(cat_string(&*self._value, &*((*v)._value)));
+                    let val = gc.alloc(cat_string(&*self._value, &*(v._value)));
                     Ok(gc.alloc(TrcStr::new(val)))
                 }
                 None => Err(ErrorInfo::new(