refactor: Fix imports, remove unused code, and resolve warnings

crates/djls-server/src/documents.rs

@@ -2,11 +2,12 @@ use anyhow::{anyhow, Result};
 use djls_project::TemplateTags;
 use std::collections::HashMap;
 use tower_lsp::lsp_types::{
+    DidOpenTextDocumentParams, DidChangeTextDocumentParams, DidCloseTextDocumentParams,
     CompletionItem, CompletionItemKind, CompletionResponse, Documentation, InsertTextFormat,
     MarkupContent, MarkupKind, Position, Range, Url,
 };
 use tower_lsp::Client;
-use super::diagnostics::Diagnostics;
+use crate::diagnostics::Diagnostics;
 
 #[derive(Debug)]
 pub struct Store {

crates/djls-template-ast/src/lexer.rs

@@ -262,17 +262,8 @@ pub enum LexerError {
     #[error("source is empty")]
     EmptySource,
 
-    #[error("at beginning of source")]
-    AtBeginningOfSource,
-
     #[error("at end of source")]
     AtEndOfSource,
-
-    #[error("invalid character access")]
-    InvalidCharacterAccess,
-
-    #[error("unexpected token type '{0:?}'")]
-    UnexpectedTokenType(TokenType),
 }
 
 #[cfg(test)]

crates/djls-template-ast/src/tagspecs.rs

@@ -152,19 +152,7 @@ pub struct ArgSpec {
     pub is_kwarg: bool,
 }
 
-impl ArgSpec {
-    pub fn is_placeholder(arg: &str) -> bool {
-        arg.starts_with('{') && arg.ends_with('}')
-    }
-
-    pub fn get_placeholder_name(arg: &str) -> Option<&str> {
-        if Self::is_placeholder(arg) {
-            Some(&arg[1..arg.len() - 1])
-        } else {
-            None
-        }
-    }
-}
+impl ArgSpec {}
 
 #[cfg(test)]
 mod tests {