refactor: remove the as_any() method from DictionaryBuilder trait

Author: kanru

src/dictionary/mod.rs

@@ -433,7 +433,7 @@ impl From<io::Error> for BuildDictionaryError {
 }
 
 /// TODO: doc
-pub trait DictionaryBuilder {
+pub trait DictionaryBuilder: Any {
     /// TODO: doc
     fn set_info(&mut self, info: DictionaryInfo) -> Result<(), BuildDictionaryError>;
     /// TODO: doc
@@ -444,7 +444,6 @@ pub trait DictionaryBuilder {
     ) -> Result<(), BuildDictionaryError>;
     /// TODO: doc
     fn build(&mut self, path: &Path) -> Result<(), BuildDictionaryError>;
-    fn as_any(&self) -> &dyn Any;
 }
 
 #[cfg(test)]

src/dictionary/sqlite.rs

@@ -1,5 +1,4 @@
 use std::{
-    any::Any,
     error::Error,
     fmt::Display,
     path::{Path, PathBuf},
@@ -577,10 +576,6 @@ impl DictionaryBuilder for SqliteDictionaryBuilder {
         self.dict.conn.execute("VACUUM INTO ?", [path])?;
         Ok(())
     }
-
-    fn as_any(&self) -> &dyn Any {
-        self
-    }
 }
 
 #[cfg(test)]

src/dictionary/trie.rs

@@ -1,5 +1,4 @@
 use std::{
-    any::Any,
     cmp::Ordering,
     collections::VecDeque,
     error::Error,
@@ -1164,10 +1163,6 @@ impl DictionaryBuilder for TrieBuilder {
         fs::rename(&tmpname, path)?;
         Ok(())
     }
-
-    fn as_any(&self) -> &dyn Any {
-        self
-    }
 }
 
 impl Default for TrieBuilder {

tools/src/init_database.rs

@@ -1,4 +1,5 @@
 use std::{
+    any::Any,
     error::Error,
     fmt::Display,
     fs::{self, File},
@@ -156,7 +157,7 @@ pub(crate) fn run(args: flags::InitDatabase) -> Result<()> {
 
     builder.build(path)?;
 
-    if let Some(trie_builder) = builder.as_any().downcast_ref::<TrieBuilder>() {
+    if let Some(trie_builder) = (builder as Box<dyn Any>).downcast_ref::<TrieBuilder>() {
         let stats = trie_builder.statistics();
         eprintln!("== Trie Dictionary Statistics ==");
         eprintln!("Name                 : {}", info.name);