diff --git a/ast-generator/src/ast_node/polymorphic_enum_inner_build_ast_node.rs b/ast-generator/src/ast_node/polymorphic_enum_inner_build_ast_node.rs
index f8f34b0..728cfa5 100644
--- a/ast-generator/src/ast_node/polymorphic_enum_inner_build_ast_node.rs
+++ b/ast-generator/src/ast_node/polymorphic_enum_inner_build_ast_node.rs
@@ -1,5 +1,7 @@
+use crate::spec::polymorphic_enum_inner_build::{
+    PolymorphicEnumInnerBuild, PolymorphicEnumInnerBuildMemberKind,
+};
 use convert_case::{Case, Casing};
-use crate::spec::polymorphic_enum_inner_build::{PolymorphicEnumInnerBuild, PolymorphicEnumInnerBuildMemberKind};
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
 
@@ -8,7 +10,8 @@ pub fn make_polymorphic_enum_inner_build_ast_node_impl(
 ) -> TokenStream {
     let type_ident = format_ident!("{}", spec.name());
 
-    let match_arms = spec.members()
+    let match_arms = spec
+        .members()
         .map(|member| {
             let member_ident = format_ident!("{}", member.name());
             match member.kind() {
@@ -25,11 +28,12 @@ pub fn make_polymorphic_enum_inner_build_ast_node_impl(
                         ]
                     }
                 }
-            }    
+            }
         })
         .collect::<Vec<_>>();
-    
-    let mut_match_arms = spec.members()
+
+    let mut_match_arms = spec
+        .members()
         .map(|member| {
             let member_ident = format_ident!("{}", member.name());
             match member.kind() {
@@ -49,7 +53,7 @@ pub fn make_polymorphic_enum_inner_build_ast_node_impl(
             }
         })
         .collect::<Vec<_>>();
-    
+
     quote! {
         impl<'a> AstNode<'a> for #type_ident {
             fn children(&'a self) -> Vec<&'a dyn AstNode<'a>> {
diff --git a/ast-generator/src/build_fn/node_production_build_fn.rs b/ast-generator/src/build_fn/node_production_build_fn.rs
index 0cab792..a666460 100644
--- a/ast-generator/src/build_fn/node_production_build_fn.rs
+++ b/ast-generator/src/build_fn/node_production_build_fn.rs
@@ -8,11 +8,11 @@ pub fn make_node_production_build_fn(spec: &NodeProductionBuildSpec) -> TokenStr
     let pair_ident = format_ident!("{}", make_build_pair(spec.name()));
     let return_type_ident = format_ident!("{}", spec.kind());
     let inner_build_fn_ident = format_ident!("{}", spec.with());
-    
+
     quote! {
         fn #build_fn_ident(file_id: usize, #pair_ident: Pair<Rule>) -> #return_type_ident {
             let inner_pair = #pair_ident.into_inner().next().unwrap();
             #inner_build_fn_ident(file_id, inner_pair)
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/build_fn/polymorphic_enum_inner_build_build_fn.rs b/ast-generator/src/build_fn/polymorphic_enum_inner_build_build_fn.rs
index 5591acc..0b0b85f 100644
--- a/ast-generator/src/build_fn/polymorphic_enum_inner_build_build_fn.rs
+++ b/ast-generator/src/build_fn/polymorphic_enum_inner_build_build_fn.rs
@@ -1,14 +1,15 @@
+use crate::deserialize::util::{make_build_fn_name, make_build_pair};
 use crate::spec::polymorphic_enum_inner_build::PolymorphicEnumInnerBuild;
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
-use crate::deserialize::util::{make_build_fn_name, make_build_pair};
 
 pub fn make_polymorphic_enum_inner_build_build_fn(spec: &PolymorphicEnumInnerBuild) -> TokenStream {
     let build_fn_ident = format_ident!("{}", make_build_fn_name(spec.name()));
     let pair_ident = format_ident!("{}", make_build_pair(spec.name()));
     let return_type_ident = format_ident!("{}", spec.name());
-    
-    let rule_branches = spec.rules()
+
+    let rule_branches = spec
+        .rules()
         .map(|rule| {
             let rule_ident = format_ident!("{}", rule.name());
             let rule_build_fn_ident = format_ident!("{}", rule.with());
@@ -17,7 +18,7 @@ pub fn make_polymorphic_enum_inner_build_build_fn(spec: &PolymorphicEnumInnerBui
             }
         })
         .collect::<Vec<_>>();
-    
+
     quote! {
         fn #build_fn_ident(file_id: usize, #pair_ident: Pair<Rule>) -> #return_type_ident {
             let inner_pair = #pair_ident.into_inner().next().unwrap();
diff --git a/ast-generator/src/build_fn/polymorphic_enum_loop_build_fn.rs b/ast-generator/src/build_fn/polymorphic_enum_loop_build_fn.rs
index 2825bd4..847a819 100644
--- a/ast-generator/src/build_fn/polymorphic_enum_loop_build_fn.rs
+++ b/ast-generator/src/build_fn/polymorphic_enum_loop_build_fn.rs
@@ -1,10 +1,10 @@
 use crate::deserialize::util::{make_build_fn_name, make_build_pair};
+use crate::spec::SpecialChildKind;
 use crate::spec::polymorphic_enum_loop_spec::{
     PolymorphicEnumLoopBuildSpec, PolymorphicEnumLoopRule, PolymorphicEnumLoopRuleBuild,
     PolymorphicEnumLoopRuleBuildChild, PolymorphicEnumLoopRuleChildOnEach,
     PolymorphicEnumLoopRulePassThrough,
 };
-use crate::spec::SpecialChildKind;
 use proc_macro2::{Ident, TokenStream};
 use quote::{format_ident, quote};
 
diff --git a/ast-generator/src/build_fn/polymorphic_leaf_enum_build_fn.rs b/ast-generator/src/build_fn/polymorphic_leaf_enum_build_fn.rs
index 5dad9ad..4bb7a56 100644
--- a/ast-generator/src/build_fn/polymorphic_leaf_enum_build_fn.rs
+++ b/ast-generator/src/build_fn/polymorphic_leaf_enum_build_fn.rs
@@ -7,16 +7,17 @@ pub fn make_polymorphic_leaf_enum_build_fn(spec: &PolymorphicLeafEnum) -> TokenS
     let build_fn_ident = format_ident!("build_{}", spec.name().to_case(Case::Snake));
     let pair_ident = format_ident!("{}_pair", spec.name().to_case(Case::Snake));
     let return_type_ident = format_ident!("{}", spec.kind());
-    
-    let child_matchers = spec.rules()
+
+    let child_matchers = spec
+        .rules()
         .map(|rule| {
             let rule_ident = format_ident!("{}", rule);
             quote! {
                 Rule::#rule_ident => #return_type_ident::#rule_ident
-            }    
+            }
         })
         .collect::<Vec<_>>();
-    
+
     quote! {
         fn #build_fn_ident(file_id: usize, #pair_ident: Pair<Rule>) -> #return_type_ident {
             let inner_pair = #pair_ident.into_inner().next().unwrap();
diff --git a/ast-generator/src/build_fn/tree_enum_build_fn.rs b/ast-generator/src/build_fn/tree_enum_build_fn.rs
index 323dbf2..f18b0fe 100644
--- a/ast-generator/src/build_fn/tree_enum_build_fn.rs
+++ b/ast-generator/src/build_fn/tree_enum_build_fn.rs
@@ -15,8 +15,7 @@ pub fn make_enum_build_fn(enum_build_spec: &TreeEnumBuildSpec) -> TokenStream {
             if let Some(child) = enum_rule.child() {
                 let inner_builder = match child.kind() {
                     EnumRuleChildKind::Node(node_child) => {
-                        let inner_build_fn_ident =
-                            format_ident!("{}", node_child.with());
+                        let inner_build_fn_ident = format_ident!("{}", node_child.with());
                         quote! { #inner_build_fn_ident(file_id, inner_pair) }
                     }
                     EnumRuleChildKind::Int(name_and_with) => {
diff --git a/ast-generator/src/deserialize/leaf_enum_spec.rs b/ast-generator/src/deserialize/leaf_enum_spec.rs
index bb145ac..3de6040 100644
--- a/ast-generator/src/deserialize/leaf_enum_spec.rs
+++ b/ast-generator/src/deserialize/leaf_enum_spec.rs
@@ -1,13 +1,12 @@
-use yaml_rust2::Yaml;
 use crate::spec::leaf_enum_spec::LeafEnumBuildSpec;
+use yaml_rust2::Yaml;
 
 pub fn deserialize_leaf_enum(name: &str, props: &Yaml) -> LeafEnumBuildSpec {
-    let rules = props["rules"].as_vec()
+    let rules = props["rules"]
+        .as_vec()
         .unwrap()
         .iter()
-        .map(|rule_yaml| {
-            rule_yaml.as_str().unwrap().to_string()
-        })
+        .map(|rule_yaml| rule_yaml.as_str().unwrap().to_string())
         .collect();
     LeafEnumBuildSpec::new(name, rules)
 }
diff --git a/ast-generator/src/deserialize/leaf_struct_spec.rs b/ast-generator/src/deserialize/leaf_struct_spec.rs
index 73b1115..d409ae6 100644
--- a/ast-generator/src/deserialize/leaf_struct_spec.rs
+++ b/ast-generator/src/deserialize/leaf_struct_spec.rs
@@ -1,13 +1,13 @@
 use crate::deserialize::util::unwrap_single_member_hash;
-use yaml_rust2::Yaml;
 use crate::spec::leaf_struct_spec::{LeafStructBuildSpec, LeafStructMember, LeafStructMemberKind};
+use yaml_rust2::Yaml;
 
 fn deserialize_member(member_name: &str, member_props: &Yaml) -> LeafStructMember {
     let kind = match member_props["kind"].as_str().unwrap() {
         "string" => LeafStructMemberKind::String,
         "file_id" => LeafStructMemberKind::FileId,
         "range" => LeafStructMemberKind::Range,
-        _ => panic!()
+        _ => panic!(),
     };
     LeafStructMember::new(member_name, kind)
 }
@@ -26,12 +26,12 @@ pub fn deserialize_leaf_struct(name: &str, props: &Yaml) -> LeafStructBuildSpec
     let derive = props["derive"]
         .as_vec()
         .map(|derive_yaml| {
-            derive_yaml.iter()
-                .map(|trait_yaml| { 
-                    trait_yaml.as_str().unwrap().to_string() 
-                }).collect::<Vec<_>>()
+            derive_yaml
+                .iter()
+                .map(|trait_yaml| trait_yaml.as_str().unwrap().to_string())
+                .collect::<Vec<_>>()
         })
         .unwrap_or_default();
-    
+
     LeafStructBuildSpec::new(name, members, derive)
 }
diff --git a/ast-generator/src/deserialize/mod.rs b/ast-generator/src/deserialize/mod.rs
index da1f801..dc46846 100644
--- a/ast-generator/src/deserialize/mod.rs
+++ b/ast-generator/src/deserialize/mod.rs
@@ -19,13 +19,13 @@ use crate::deserialize::polymorphic_enum_build_inner::deserialize_polymorphic_en
 use crate::deserialize::polymorphic_enum_loop_spec::deserialize_polymorphic_enum_loop;
 use crate::deserialize::polymorphic_leaf_enum::deserialize_polymorphic_leaf_enum;
 use crate::deserialize::polymorphic_pass_through_spec::deserialize_polymorphic_pass_through;
+use crate::deserialize::polymorphic_tree_enum::deserialize_polymorphic_tree_enum;
 use crate::deserialize::polymorphic_type_spec::deserialize_polymorphic_type;
 use crate::deserialize::production_spec::deserialize_production;
 use crate::deserialize::struct_spec::deserialize_struct_spec;
 use crate::deserialize::tree_enum_spec::deserialize_tree_enum;
 use crate::spec::BuildSpec;
 use yaml_rust2::{Yaml, YamlLoader};
-use crate::deserialize::polymorphic_tree_enum::deserialize_polymorphic_tree_enum;
 
 fn deserialize_build_spec(build_spec_name: &str, build_spec: &Yaml) -> BuildSpec {
     if build_spec["struct"].is_hash() {
diff --git a/ast-generator/src/deserialize/polymorphic_enum_loop_spec.rs b/ast-generator/src/deserialize/polymorphic_enum_loop_spec.rs
index 8f62524..a65a7fd 100644
--- a/ast-generator/src/deserialize/polymorphic_enum_loop_spec.rs
+++ b/ast-generator/src/deserialize/polymorphic_enum_loop_spec.rs
@@ -46,21 +46,17 @@ fn deserialize_build(name: &str, props: &Yaml) -> PolymorphicEnumLoopRuleBuild {
     let fields = props["fields"]
         .as_vec()
         .map(|fields| {
-            fields.iter()
+            fields
+                .iter()
                 .map(|field_yaml| {
                     let (field_name, field_props) = unwrap_single_member_hash(field_yaml);
                     let kind = field_props["kind"].as_str().unwrap();
-                    StructField::new(
-                        &field_name,
-                        kind,
-                        None,
-                        false
-                    )
+                    StructField::new(&field_name, kind, None, false)
                 })
                 .collect::<Vec<_>>()
         })
         .unwrap_or_else(|| vec![]);
-    
+
     PolymorphicEnumLoopRuleBuild::new(name, variant, children, fields)
 }
 
diff --git a/ast-generator/src/deserialize/polymorphic_leaf_enum.rs b/ast-generator/src/deserialize/polymorphic_leaf_enum.rs
index 4d31973..ca44ab4 100644
--- a/ast-generator/src/deserialize/polymorphic_leaf_enum.rs
+++ b/ast-generator/src/deserialize/polymorphic_leaf_enum.rs
@@ -1,13 +1,13 @@
-use yaml_rust2::Yaml;
 use crate::spec::polymorphic_leaf_enum::PolymorphicLeafEnum;
+use yaml_rust2::Yaml;
 
 pub fn deserialize_polymorphic_leaf_enum(name: &str, props: &Yaml) -> PolymorphicLeafEnum {
     let kind = props["kind"].as_str().unwrap();
-    let rules = props["rules"].as_vec().unwrap()
+    let rules = props["rules"]
+        .as_vec()
+        .unwrap()
         .iter()
-        .map(|rule| {
-            rule.as_str().unwrap().to_string()
-        })
+        .map(|rule| rule.as_str().unwrap().to_string())
         .collect::<Vec<_>>();
     PolymorphicLeafEnum::new(name, kind, rules)
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/deserialize/polymorphic_pass_through_spec.rs b/ast-generator/src/deserialize/polymorphic_pass_through_spec.rs
index dd3ac17..b64f9a1 100644
--- a/ast-generator/src/deserialize/polymorphic_pass_through_spec.rs
+++ b/ast-generator/src/deserialize/polymorphic_pass_through_spec.rs
@@ -1,10 +1,17 @@
 use crate::deserialize::util::unwrap_single_member_hash;
-use crate::spec::polymorphic_pass_through_spec::{PolymorphicPassThroughBuildSpec, PolymorphicPassThroughVariant};
+use crate::spec::polymorphic_pass_through_spec::{
+    PolymorphicPassThroughBuildSpec, PolymorphicPassThroughVariant,
+};
 use yaml_rust2::Yaml;
 
-pub fn deserialize_polymorphic_pass_through(name: &str, props: &Yaml) -> PolymorphicPassThroughBuildSpec {
+pub fn deserialize_polymorphic_pass_through(
+    name: &str,
+    props: &Yaml,
+) -> PolymorphicPassThroughBuildSpec {
     let build_kind = props["build"]["kind"].as_str().unwrap();
-    let variants = props["variants"].as_vec().unwrap()
+    let variants = props["variants"]
+        .as_vec()
+        .unwrap()
         .iter()
         .map(|variant_yaml| {
             let (variant_name, variant_props) = unwrap_single_member_hash(variant_yaml);
diff --git a/ast-generator/src/deserialize/polymorphic_tree_enum.rs b/ast-generator/src/deserialize/polymorphic_tree_enum.rs
index b78c474..e3c005a 100644
--- a/ast-generator/src/deserialize/polymorphic_tree_enum.rs
+++ b/ast-generator/src/deserialize/polymorphic_tree_enum.rs
@@ -1,12 +1,14 @@
-use yaml_rust2::Yaml;
 use crate::spec::polymorphic_tree_enum_spec::PolymorphicTreeEnumSpec;
+use yaml_rust2::Yaml;
 
 pub fn deserialize_polymorphic_tree_enum(name: &str, props: &Yaml) -> PolymorphicTreeEnumSpec {
     let kind = props["kind"].as_str().unwrap();
-    let rules = props["rules"].as_vec().unwrap()
+    let rules = props["rules"]
+        .as_vec()
+        .unwrap()
         .iter()
         .map(|rule| rule.as_str().unwrap())
         .collect::<Vec<_>>();
-    
+
     PolymorphicTreeEnumSpec::new(name, kind, &rules)
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/deserialize/polymorphic_type_spec.rs b/ast-generator/src/deserialize/polymorphic_type_spec.rs
index 54d34c8..17d58ad 100644
--- a/ast-generator/src/deserialize/polymorphic_type_spec.rs
+++ b/ast-generator/src/deserialize/polymorphic_type_spec.rs
@@ -4,7 +4,7 @@ use yaml_rust2::Yaml;
 
 fn deserialize_variant(variant_name: &str, props: &Yaml) -> PolymorphicTypeVariant {
     let inner_kind = props["inner"]["kind"].as_str().unwrap();
-    PolymorphicTypeVariant::new(variant_name, inner_kind)    
+    PolymorphicTypeVariant::new(variant_name, inner_kind)
 }
 
 pub fn deserialize_polymorphic_type(name: &str, props: &Yaml) -> PolymorphicTypeBuildSpec {
@@ -20,4 +20,4 @@ pub fn deserialize_polymorphic_type(name: &str, props: &Yaml) -> PolymorphicType
         .collect();
     let kind = props["build"]["kind"].as_str().unwrap();
     PolymorphicTypeBuildSpec::new(name, variants, kind)
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/deserialize/production_spec.rs b/ast-generator/src/deserialize/production_spec.rs
index 34ea86c..2e40053 100644
--- a/ast-generator/src/deserialize/production_spec.rs
+++ b/ast-generator/src/deserialize/production_spec.rs
@@ -1,4 +1,6 @@
-use crate::spec::production_spec::{ProductionBooleanFrom, ProductionBuildSpec, ProductionKind, ProductionStringFrom};
+use crate::spec::production_spec::{
+    ProductionBooleanFrom, ProductionBuildSpec, ProductionKind, ProductionStringFrom,
+};
 use yaml_rust2::Yaml;
 
 pub fn deserialize_production(name: &str, props: &Yaml) -> ProductionBuildSpec {
@@ -10,12 +12,18 @@ pub fn deserialize_production(name: &str, props: &Yaml) -> ProductionBuildSpec {
             let from = match props["from"].as_str().unwrap() {
                 "string_inner" => ProductionStringFrom::StringInner,
                 "whole_pair" => ProductionStringFrom::WholePair,
-                _ => panic!("Unknown string production from: {}", props["from"].as_str().unwrap())
+                _ => panic!(
+                    "Unknown string production from: {}",
+                    props["from"].as_str().unwrap()
+                ),
             };
             ProductionKind::String(from)
-        },
+        }
         "boolean" => ProductionKind::Boolean(ProductionBooleanFrom::ParseWholePair),
-        _ => panic!("Unknown production kind: {}", props["kind"].as_str().unwrap()),
+        _ => panic!(
+            "Unknown production kind: {}",
+            props["kind"].as_str().unwrap()
+        ),
     };
     ProductionBuildSpec::new(name, kind)
 }
diff --git a/ast-generator/src/deserialize/tree_enum_spec.rs b/ast-generator/src/deserialize/tree_enum_spec.rs
index 2090096..6980565 100644
--- a/ast-generator/src/deserialize/tree_enum_spec.rs
+++ b/ast-generator/src/deserialize/tree_enum_spec.rs
@@ -1,14 +1,14 @@
-use convert_case::{Case, Casing};
 use crate::deserialize::util::{get_as_bool_or, make_build_fn_name, unwrap_single_member_hash};
-use crate::spec::tree_enum_spec::{EnumRuleChild, EnumRuleChildKind, EnumRuleChildNodeKind, NameAndWith, TreeEnumBuildSpec, TreeEnumRule};
+use crate::spec::tree_enum_spec::{
+    EnumRuleChild, EnumRuleChildKind, EnumRuleChildNodeKind, NameAndWith, TreeEnumBuildSpec,
+    TreeEnumRule,
+};
+use convert_case::{Case, Casing};
 use yaml_rust2::Yaml;
 
 fn deserialize_hash_enum_rule(rule: &str, props: &Yaml) -> TreeEnumRule {
     if get_as_bool_or(&props["child"], true) {
-        let name_and_with = NameAndWith::new(
-            &rule.to_case(Case::Snake),
-            &make_build_fn_name(rule)
-        );
+        let name_and_with = NameAndWith::new(&rule.to_case(Case::Snake), &make_build_fn_name(rule));
         let kind = match props["kind"].as_str().unwrap() {
             "int" => EnumRuleChildKind::Int(name_and_with),
             "long" => EnumRuleChildKind::Long(name_and_with),
@@ -28,10 +28,7 @@ fn deserialize_string_enum_rule(rule: &str) -> TreeEnumRule {
     TreeEnumRule::new(
         rule,
         Some(Box::new(EnumRuleChild::new(Box::new(
-            EnumRuleChildKind::Node(EnumRuleChildNodeKind::new(
-                rule,
-                &make_build_fn_name(rule)
-            )),
+            EnumRuleChildKind::Node(EnumRuleChildNodeKind::new(rule, &make_build_fn_name(rule))),
         )))),
     )
 }
diff --git a/ast-generator/src/pretty_print.rs b/ast-generator/src/pretty_print.rs
index 8317e8b..2b94124 100644
--- a/ast-generator/src/pretty_print.rs
+++ b/ast-generator/src/pretty_print.rs
@@ -1,3 +1,4 @@
+use crate::spec::BuildSpec;
 use crate::spec::leaf_enum_spec::LeafEnumBuildSpec;
 use crate::spec::leaf_struct_spec::{LeafStructBuildSpec, LeafStructMemberKind};
 use crate::spec::polymorphic_enum_inner_build::{
@@ -9,7 +10,6 @@ use crate::spec::polymorphic_enum_loop_spec::{
 use crate::spec::polymorphic_type_spec::PolymorphicTypeBuildSpec;
 use crate::spec::struct_spec::{MemberChildBuild, StructChild, StructSpec, VecChildBuild};
 use crate::spec::tree_enum_spec::{EnumRuleChildKind, TreeEnumBuildSpec};
-use crate::spec::BuildSpec;
 use convert_case::{Case, Casing};
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
diff --git a/ast-generator/src/spec/leaf_enum_spec.rs b/ast-generator/src/spec/leaf_enum_spec.rs
index 5c687fc..1d6c70c 100644
--- a/ast-generator/src/spec/leaf_enum_spec.rs
+++ b/ast-generator/src/spec/leaf_enum_spec.rs
@@ -18,4 +18,4 @@ impl LeafEnumBuildSpec {
     pub fn rules(&self) -> impl Iterator<Item = &str> {
         self.rules.iter().map(AsRef::as_ref)
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/spec/leaf_struct_spec.rs b/ast-generator/src/spec/leaf_struct_spec.rs
index e148c31..42e74fe 100644
--- a/ast-generator/src/spec/leaf_struct_spec.rs
+++ b/ast-generator/src/spec/leaf_struct_spec.rs
@@ -20,7 +20,7 @@ impl LeafStructBuildSpec {
     pub fn members(&self) -> impl Iterator<Item = &LeafStructMember> {
         self.members.iter().map(Box::as_ref)
     }
-    
+
     pub fn derive(&self) -> impl Iterator<Item = &str> {
         self.derive.iter().map(String::as_str)
     }
@@ -51,5 +51,5 @@ impl LeafStructMember {
 pub enum LeafStructMemberKind {
     String,
     FileId,
-    Range
+    Range,
 }
diff --git a/ast-generator/src/spec/node_production_spec.rs b/ast-generator/src/spec/node_production_spec.rs
index 2f019a6..98e73ee 100644
--- a/ast-generator/src/spec/node_production_spec.rs
+++ b/ast-generator/src/spec/node_production_spec.rs
@@ -1,7 +1,7 @@
 pub struct NodeProductionBuildSpec {
     name: String,
     kind: String,
-    with: String
+    with: String,
 }
 
 impl NodeProductionBuildSpec {
@@ -9,19 +9,19 @@ impl NodeProductionBuildSpec {
         Self {
             name: name.to_string(),
             kind: kind.to_string(),
-            with: with.to_string()
+            with: with.to_string(),
         }
     }
-    
+
     pub fn name(&self) -> &str {
         &self.name
     }
-    
+
     pub fn kind(&self) -> &str {
         &self.kind
     }
-    
+
     pub fn with(&self) -> &str {
         &self.with
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/spec/polymorphic_enum_inner_build.rs b/ast-generator/src/spec/polymorphic_enum_inner_build.rs
index 64c7b35..6d871bf 100644
--- a/ast-generator/src/spec/polymorphic_enum_inner_build.rs
+++ b/ast-generator/src/spec/polymorphic_enum_inner_build.rs
@@ -5,7 +5,11 @@ pub struct PolymorphicEnumInnerBuild {
 }
 
 impl PolymorphicEnumInnerBuild {
-    pub fn new(name: &str, members: Vec<PolymorphicEnumInnerBuildMember>, rules: Vec<PolymorphicEnumInnerBuildRule>) -> Self {
+    pub fn new(
+        name: &str,
+        members: Vec<PolymorphicEnumInnerBuildMember>,
+        rules: Vec<PolymorphicEnumInnerBuildRule>,
+    ) -> Self {
         Self {
             name: name.to_string(),
             members,
@@ -28,21 +32,21 @@ impl PolymorphicEnumInnerBuild {
 
 pub struct PolymorphicEnumInnerBuildMember {
     name: String,
-    kind: PolymorphicEnumInnerBuildMemberKind
+    kind: PolymorphicEnumInnerBuildMemberKind,
 }
 
 impl PolymorphicEnumInnerBuildMember {
     pub fn new(name: &str, kind: PolymorphicEnumInnerBuildMemberKind) -> Self {
         Self {
             name: name.to_string(),
-            kind
+            kind,
         }
     }
-    
+
     pub fn name(&self) -> &str {
         &self.name
     }
-    
+
     pub fn kind(&self) -> &PolymorphicEnumInnerBuildMemberKind {
         &self.kind
     }
@@ -50,7 +54,7 @@ impl PolymorphicEnumInnerBuildMember {
 
 pub enum PolymorphicEnumInnerBuildMemberKind {
     Leaf,
-    Struct
+    Struct,
 }
 
 pub struct PolymorphicEnumInnerBuildRule {
@@ -65,12 +69,12 @@ impl PolymorphicEnumInnerBuildRule {
             with: with.to_string(),
         }
     }
-    
+
     pub fn name(&self) -> &str {
         &self.name
     }
-    
+
     pub fn with(&self) -> &str {
         &self.with
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/spec/polymorphic_enum_loop_spec.rs b/ast-generator/src/spec/polymorphic_enum_loop_spec.rs
index 7b3256d..1bbaeaa 100644
--- a/ast-generator/src/spec/polymorphic_enum_loop_spec.rs
+++ b/ast-generator/src/spec/polymorphic_enum_loop_spec.rs
@@ -105,7 +105,7 @@ impl PolymorphicEnumLoopRuleBuild {
     pub fn children(&self) -> impl Iterator<Item = &PolymorphicEnumLoopRuleBuildChild> {
         self.children.iter().map(Box::as_ref)
     }
-    
+
     pub fn fields(&self) -> &[StructField] {
         &self.fields
     }
diff --git a/ast-generator/src/spec/polymorphic_tree_enum_spec.rs b/ast-generator/src/spec/polymorphic_tree_enum_spec.rs
index c5c2691..6ba3bed 100644
--- a/ast-generator/src/spec/polymorphic_tree_enum_spec.rs
+++ b/ast-generator/src/spec/polymorphic_tree_enum_spec.rs
@@ -12,16 +12,16 @@ impl PolymorphicTreeEnumSpec {
             rules: rules.iter().map(ToString::to_string).collect(),
         }
     }
-    
+
     pub fn name(&self) -> &str {
         &self.name
     }
-    
+
     pub fn kind(&self) -> &str {
         &self.kind
     }
-    
+
     pub fn rules(&self) -> impl Iterator<Item = &str> {
         self.rules.iter().map(AsRef::as_ref)
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/spec/tree_enum_spec.rs b/ast-generator/src/spec/tree_enum_spec.rs
index 4de0d35..8da2095 100644
--- a/ast-generator/src/spec/tree_enum_spec.rs
+++ b/ast-generator/src/spec/tree_enum_spec.rs
@@ -88,7 +88,7 @@ impl EnumRuleChildNodeKind {
     pub fn node_kind(&self) -> &str {
         &self.node_kind
     }
-    
+
     pub fn with(&self) -> &str {
         &self.with
     }
@@ -106,11 +106,11 @@ impl NameAndWith {
             with: with.to_string(),
         }
     }
-    
+
     pub fn name(&self) -> &str {
         &self.name
     }
-    
+
     pub fn with(&self) -> &str {
         &self.with
     }
diff --git a/ast-generator/src/type_gen/enum_type.rs b/ast-generator/src/type_gen/enum_type.rs
index d2dc2c6..c59297d 100644
--- a/ast-generator/src/type_gen/enum_type.rs
+++ b/ast-generator/src/type_gen/enum_type.rs
@@ -1,6 +1,6 @@
+use crate::spec::tree_enum_spec::{EnumRuleChildKind, TreeEnumBuildSpec};
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
-use crate::spec::tree_enum_spec::{EnumRuleChildKind, TreeEnumBuildSpec};
 
 pub fn make_enum_type(build_spec: &TreeEnumBuildSpec) -> TokenStream {
     let children: Vec<TokenStream> = build_spec
@@ -34,4 +34,4 @@ pub fn make_enum_type(build_spec: &TreeEnumBuildSpec) -> TokenStream {
             #(#children),*
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/type_gen/leaf_struct_type.rs b/ast-generator/src/type_gen/leaf_struct_type.rs
index 6bdce5f..bee5904 100644
--- a/ast-generator/src/type_gen/leaf_struct_type.rs
+++ b/ast-generator/src/type_gen/leaf_struct_type.rs
@@ -84,10 +84,11 @@ pub fn make_leaf_struct_type(build_spec: &LeafStructBuildSpec) -> TokenStream {
         .collect::<Vec<_>>();
 
     let struct_stream = if build_spec.derive().count() > 0 {
-        let derives = build_spec.derive().map(|derive| {
-            format_ident!("{}", derive)
-        }).collect::<Vec<_>>();
-        
+        let derives = build_spec
+            .derive()
+            .map(|derive| format_ident!("{}", derive))
+            .collect::<Vec<_>>();
+
         quote! {
             #[derive(#(#derives),*)]
             pub struct #type_ident {
@@ -101,7 +102,7 @@ pub fn make_leaf_struct_type(build_spec: &LeafStructBuildSpec) -> TokenStream {
             }
         }
     };
-    
+
     quote! {
         #struct_stream
 
diff --git a/ast-generator/src/type_gen/polymorphic_enum_inner_build_type.rs b/ast-generator/src/type_gen/polymorphic_enum_inner_build_type.rs
index 57d7d6d..be195fa 100644
--- a/ast-generator/src/type_gen/polymorphic_enum_inner_build_type.rs
+++ b/ast-generator/src/type_gen/polymorphic_enum_inner_build_type.rs
@@ -1,9 +1,12 @@
+use crate::spec::polymorphic_enum_inner_build::{
+    PolymorphicEnumInnerBuild, PolymorphicEnumInnerBuildMemberKind,
+};
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
-use crate::spec::polymorphic_enum_inner_build::{PolymorphicEnumInnerBuild, PolymorphicEnumInnerBuildMemberKind};
 
 pub fn make_polymorphic_enum_inner_build_type(spec: &PolymorphicEnumInnerBuild) -> TokenStream {
-    let members = spec.members()
+    let members = spec
+        .members()
         .map(|member| {
             let name_ident = format_ident!("{}", member.name());
             match member.kind() {
@@ -22,4 +25,4 @@ pub fn make_polymorphic_enum_inner_build_type(spec: &PolymorphicEnumInnerBuild)
             #(#members,)*
         }
     }
-}
\ No newline at end of file
+}
diff --git a/ast-generator/src/type_gen/polymorphic_enum_loop_type.rs b/ast-generator/src/type_gen/polymorphic_enum_loop_type.rs
index 1eb2a65..a106144 100644
--- a/ast-generator/src/type_gen/polymorphic_enum_loop_type.rs
+++ b/ast-generator/src/type_gen/polymorphic_enum_loop_type.rs
@@ -1,7 +1,7 @@
+use crate::spec::SpecialChildKind;
 use crate::spec::polymorphic_enum_loop_spec::{
     PolymorphicEnumLoopBuildSpec, PolymorphicEnumLoopRule, PolymorphicEnumLoopRuleBuildChild,
 };
-use crate::spec::SpecialChildKind;
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
 
diff --git a/build.rs b/build.rs
index 96f819c..d236ab4 100644
--- a/build.rs
+++ b/build.rs
@@ -1,4 +1,4 @@
-use ast_generator::{get_build_specs, generate_files};
+use ast_generator::{generate_files, get_build_specs};
 use cst_test_generator::generate_test_files;
 use std::env;
 use std::fs;
diff --git a/src/asm/assemble_ir.rs b/src/asm/assemble_ir.rs
index fc67444..dcd064f 100644
--- a/src/asm/assemble_ir.rs
+++ b/src/asm/assemble_ir.rs
@@ -191,14 +191,12 @@ fn assemble_ir_call(ir_call: &IrCall, context: &mut AssemblyContext) {
 }
 
 fn assemble_ir_return(ir_return: &IrReturn, context: &mut AssemblyContext) {
-    let operand = ir_return.expression().map(|expression| {
-        match expression {
-            IrExpression::Variable(ir_variable) => {
-                let variable_virtual_register_id = context.get_virtual_register(ir_variable.name());
-                AsmOperand::VirtualRegister(variable_virtual_register_id)
-            }
-            IrExpression::Literal(ir_literal) => ir_literal_to_asm_operand(ir_literal),
+    let operand = ir_return.expression().map(|expression| match expression {
+        IrExpression::Variable(ir_variable) => {
+            let variable_virtual_register_id = context.get_virtual_register(ir_variable.name());
+            AsmOperand::VirtualRegister(variable_virtual_register_id)
         }
+        IrExpression::Literal(ir_literal) => ir_literal_to_asm_operand(ir_literal),
     });
     context
         .current_control_unit_mut()
diff --git a/src/bin/dmc/cst.rs b/src/bin/dmc/cst.rs
index 231fe2a..f62d56d 100644
--- a/src/bin/dmc/cst.rs
+++ b/src/bin/dmc/cst.rs
@@ -1,7 +1,7 @@
 use deimos::parser::{DeimosParser, Rule};
-use std::path::PathBuf;
 use pest::iterators::{Pair, Pairs};
 use pest::Parser;
+use std::path::PathBuf;
 
 fn print_pair(pair: Pair<Rule>) {
     println!("{:?}", pair.as_rule());
@@ -27,4 +27,4 @@ pub fn show_cst(path: &PathBuf) {
             eprintln!("{:?}", error);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/bin/dmc/name_analysis.rs b/src/bin/dmc/name_analysis.rs
index dd9001c..e79906e 100644
--- a/src/bin/dmc/name_analysis.rs
+++ b/src/bin/dmc/name_analysis.rs
@@ -2,6 +2,7 @@ use codespan_reporting::files::SimpleFiles;
 use codespan_reporting::term;
 use codespan_reporting::term::termcolor::{ColorChoice, StandardStream};
 use deimos::ast::build::build_ast;
+use deimos::ast::node::CompilationUnit;
 use deimos::name_analysis::analyze_names;
 use deimos::name_analysis::symbol_table::SymbolTable;
 use deimos::parser::{DeimosParser, Rule};
@@ -10,7 +11,6 @@ use pest::Parser;
 use std::collections::HashMap;
 use std::fmt::{Debug, Display, Formatter};
 use std::path::PathBuf;
-use deimos::ast::node::CompilationUnit;
 
 struct ParseErrors {
     errors: Vec<pest::error::Error<Rule>>,
@@ -34,7 +34,9 @@ impl Display for ParseErrors {
 
 impl std::error::Error for ParseErrors {}
 
-pub fn name_analysis(paths: &[PathBuf]) -> Result<Vec<CompilationUnit>, Box<dyn std::error::Error>> {
+pub fn name_analysis(
+    paths: &[PathBuf],
+) -> Result<Vec<CompilationUnit>, Box<dyn std::error::Error>> {
     let mut paths_and_sources: HashMap<String, String> = HashMap::new();
     for path in paths {
         let src = std::fs::read_to_string(path).unwrap();
diff --git a/src/ir/lower_ast.rs b/src/ir/lower_ast.rs
index f21860a..456fb17 100644
--- a/src/ir/lower_ast.rs
+++ b/src/ir/lower_ast.rs
@@ -8,10 +8,10 @@ use crate::ir::{
     IrPrimitiveKind, IrReturn, IrStatement, IrStructKind, IrVariable,
 };
 use crate::name_analysis::symbol::{ClassSymbol, ParameterSymbol, PrimitiveTypeSymbol, TypeSymbol};
+use crate::type_analysis::kinds::Kind;
 use std::cell::RefCell;
 use std::ops::Deref;
 use std::rc::Rc;
-use crate::type_analysis::kinds::Kind;
 
 struct CuContext {
     irs: Vec<Ir>,
diff --git a/src/name_analysis/second_pass.rs b/src/name_analysis/second_pass.rs
index 989f1ed..fea5973 100644
--- a/src/name_analysis/second_pass.rs
+++ b/src/name_analysis/second_pass.rs
@@ -1,12 +1,12 @@
 use crate::ast::node::{
-    AssignmentStatement, BacktickString, Call, Closure, ClosureParameters,
-    CompilationUnit, ConcreteUseStatement, ConcreteUseStatementSuffix, DString, Expression,
-    ExpressionList, ExpressionStatement, Function, FunctionAliasBody, FunctionBlockBody,
-    FunctionBody, FunctionEqualsBody, GenericParameters, Identifier, IdentifierExpression,
-    IdentifierOrFqn, LValue, LValueSuffix, Literal, ModuleLevelDeclaration
-    , ObjectIndex, Parameter, Parameters, PlatformFunction, PrimitiveType,
-    ReturnType, StarUseStatement, Statement, SuffixExpression, SuffixOperator, TypeUse, TypedArray,
-    UseStatement, UseStatementIdentifier, UseStatementPrefix, VariableDeclaration,
+    AssignmentStatement, BacktickString, Call, Closure, ClosureParameters, CompilationUnit,
+    ConcreteUseStatement, ConcreteUseStatementSuffix, DString, Expression, ExpressionList,
+    ExpressionStatement, Function, FunctionAliasBody, FunctionBlockBody, FunctionBody,
+    FunctionEqualsBody, GenericParameters, Identifier, IdentifierExpression, IdentifierOrFqn,
+    LValue, LValueSuffix, Literal, ModuleLevelDeclaration, ObjectIndex, Parameter, Parameters,
+    PlatformFunction, PrimitiveType, ReturnType, StarUseStatement, Statement, SuffixExpression,
+    SuffixOperator, TypeUse, TypedArray, UseStatement, UseStatementIdentifier, UseStatementPrefix,
+    VariableDeclaration,
 };
 use crate::diagnostic::DmDiagnostic;
 use crate::name_analysis::symbol::source_definition::SourceDefinition;
@@ -529,7 +529,11 @@ fn na_p2_variable_declaration(
     }
 
     // initializer
-    na_p2_expression(variable_declaration.expression_mut(), symbol_table, diagnostics);
+    na_p2_expression(
+        variable_declaration.expression_mut(),
+        symbol_table,
+        diagnostics,
+    );
 }
 
 fn na_p2_assignment_statement(
@@ -628,7 +632,11 @@ fn na_p2_expression(
         }
         Expression::Additive(additive) => {
             na_p2_expression(additive.left_mut(), symbol_table, diagnostics);
-            na_p2_expression(additive.rhs_mut().expression_mut(), symbol_table, diagnostics);
+            na_p2_expression(
+                additive.rhs_mut().expression_mut(),
+                symbol_table,
+                diagnostics,
+            );
         }
         Expression::Multiplicative(multiplicative) => {
             todo!()
diff --git a/src/name_analysis/symbol/class_symbol.rs b/src/name_analysis/symbol/class_symbol.rs
index ea7f50a..ed3322d 100644
--- a/src/name_analysis/symbol/class_symbol.rs
+++ b/src/name_analysis/symbol/class_symbol.rs
@@ -23,15 +23,15 @@ impl ClassSymbol {
             source_definition,
         }
     }
-    
+
     pub fn fqn_formatted(&self) -> String {
         self.fqn_parts.join("::")
     }
-    
+
     pub fn declared_name(&self) -> &str {
         self.fqn_parts.last().unwrap()
     }
-    
+
     pub fn declared_name_owned(&self) -> Rc<str> {
         self.fqn_parts.last().unwrap().clone()
     }
diff --git a/src/name_analysis/symbol/expressible_symbol.rs b/src/name_analysis/symbol/expressible_symbol.rs
index ba0a5b5..ed2f42f 100644
--- a/src/name_analysis/symbol/expressible_symbol.rs
+++ b/src/name_analysis/symbol/expressible_symbol.rs
@@ -1,4 +1,6 @@
-use crate::name_analysis::symbol::{ClassMemberSymbol, ClassSymbol, FunctionSymbol, ParameterSymbol, Symbol, VariableSymbol};
+use crate::name_analysis::symbol::{
+    ClassMemberSymbol, ClassSymbol, FunctionSymbol, ParameterSymbol, Symbol, VariableSymbol,
+};
 use std::cell::RefCell;
 use std::rc::Rc;
 
@@ -13,9 +15,7 @@ pub enum ExpressibleSymbol {
 impl ExpressibleSymbol {
     pub fn to_symbol(self) -> Rc<RefCell<dyn Symbol>> {
         match self {
-            ExpressibleSymbol::Class(class_symbol) => {
-                class_symbol as Rc<RefCell<dyn Symbol>>
-            }
+            ExpressibleSymbol::Class(class_symbol) => class_symbol as Rc<RefCell<dyn Symbol>>,
             ExpressibleSymbol::Function(function_symbol) => {
                 function_symbol as Rc<RefCell<dyn Symbol>>
             }
diff --git a/src/name_analysis/symbol/function_symbol.rs b/src/name_analysis/symbol/function_symbol.rs
index d1468c3..a090d7f 100644
--- a/src/name_analysis/symbol/function_symbol.rs
+++ b/src/name_analysis/symbol/function_symbol.rs
@@ -50,7 +50,7 @@ impl FunctionSymbol {
             return_type,
         }
     }
-    
+
     pub fn fqn_formatted(&self) -> String {
         self.fqn_parts.join("::")
     }
@@ -82,11 +82,11 @@ impl FunctionSymbol {
     pub fn set_parameter_symbols(&mut self, parameter_symbols: Vec<Rc<RefCell<ParameterSymbol>>>) {
         self.parameters = parameter_symbols;
     }
-    
+
     pub fn return_type(&self) -> Option<&TypeSymbol> {
         self.return_type.as_ref()
     }
-    
+
     pub fn return_type_owned(&self) -> Option<TypeSymbol> {
         self.return_type.clone()
     }
diff --git a/src/name_analysis/symbol/generic_type_symbol.rs b/src/name_analysis/symbol/generic_type_symbol.rs
index c821e35..417e0fc 100644
--- a/src/name_analysis/symbol/generic_type_symbol.rs
+++ b/src/name_analysis/symbol/generic_type_symbol.rs
@@ -20,7 +20,7 @@ impl GenericTypeSymbol {
     pub fn declared_name(&self) -> &str {
         &self.declared_name
     }
-    
+
     pub fn declared_name_owned(&self) -> Rc<str> {
         self.declared_name.clone()
     }
diff --git a/src/name_analysis/symbol/interface_symbol.rs b/src/name_analysis/symbol/interface_symbol.rs
index 678f42e..a036de6 100644
--- a/src/name_analysis/symbol/interface_symbol.rs
+++ b/src/name_analysis/symbol/interface_symbol.rs
@@ -20,11 +20,11 @@ impl InterfaceSymbol {
             source_definition,
         }
     }
-    
+
     pub fn declared_name(&self) -> &str {
         self.fqn_parts.last().unwrap().as_ref()
     }
-    
+
     pub fn declared_name_owned(&self) -> Rc<str> {
         self.fqn_parts.last().unwrap().clone()
     }
diff --git a/src/name_analysis/symbol/lv_symbol.rs b/src/name_analysis/symbol/lv_symbol.rs
index d174f3d..dc62d9d 100644
--- a/src/name_analysis/symbol/lv_symbol.rs
+++ b/src/name_analysis/symbol/lv_symbol.rs
@@ -1,9 +1,9 @@
-use std::cell::RefCell;
-use std::rc::Rc;
 use crate::name_analysis::symbol::class_member_symbol::ClassMemberSymbol;
 use crate::name_analysis::symbol::parameter_symbol::ParameterSymbol;
-use crate::name_analysis::symbol::Symbol;
 use crate::name_analysis::symbol::variable_symbol::VariableSymbol;
+use crate::name_analysis::symbol::Symbol;
+use std::cell::RefCell;
+use std::rc::Rc;
 
 pub enum LVSymbol {
     ClassMember(Rc<RefCell<ClassMemberSymbol>>),
@@ -17,12 +17,8 @@ impl LVSymbol {
             LVSymbol::ClassMember(class_member_symbol) => {
                 class_member_symbol as Rc<RefCell<dyn Symbol>>
             }
-            LVSymbol::Parameter(parameter_symbol) => {
-                parameter_symbol as Rc<RefCell<dyn Symbol>>
-            }
-            LVSymbol::Variable(variable_symbol) => {
-                variable_symbol as Rc<RefCell<dyn Symbol>>
-            }
+            LVSymbol::Parameter(parameter_symbol) => parameter_symbol as Rc<RefCell<dyn Symbol>>,
+            LVSymbol::Variable(variable_symbol) => variable_symbol as Rc<RefCell<dyn Symbol>>,
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/name_analysis/symbol/parameter_symbol.rs b/src/name_analysis/symbol/parameter_symbol.rs
index f7a25d7..bd6d86a 100644
--- a/src/name_analysis/symbol/parameter_symbol.rs
+++ b/src/name_analysis/symbol/parameter_symbol.rs
@@ -30,11 +30,11 @@ impl ParameterSymbol {
     pub fn declared_name_owned(&self) -> Rc<str> {
         self.declared_name.clone()
     }
-    
+
     pub fn type_symbol(&self) -> Option<&TypeSymbol> {
         self.type_symbol.as_ref()
     }
-    
+
     pub fn type_symbol_mut(&mut self) -> Option<&mut TypeSymbol> {
         self.type_symbol.as_mut()
     }
diff --git a/src/name_analysis/symbol/source_definition.rs b/src/name_analysis/symbol/source_definition.rs
index 02f29e9..d090fd3 100644
--- a/src/name_analysis/symbol/source_definition.rs
+++ b/src/name_analysis/symbol/source_definition.rs
@@ -36,4 +36,4 @@ impl SourceDefinition {
     pub fn range(&self) -> Range<usize> {
         self.range.clone()
     }
-}
\ No newline at end of file
+}
diff --git a/src/name_analysis/symbol/type_symbol.rs b/src/name_analysis/symbol/type_symbol.rs
index 0fad753..669b059 100644
--- a/src/name_analysis/symbol/type_symbol.rs
+++ b/src/name_analysis/symbol/type_symbol.rs
@@ -2,10 +2,10 @@ use crate::name_analysis::symbol::class_symbol::ClassSymbol;
 use crate::name_analysis::symbol::generic_type_symbol::GenericTypeSymbol;
 use crate::name_analysis::symbol::interface_symbol::InterfaceSymbol;
 use crate::name_analysis::symbol::primitive_type_symbol::PrimitiveTypeSymbol;
+use crate::name_analysis::symbol::Symbol;
 use std::cell::RefCell;
 use std::fmt::Debug;
 use std::rc::Rc;
-use crate::name_analysis::symbol::Symbol;
 
 #[derive(Debug, Clone)]
 pub enum TypeSymbol {
@@ -21,15 +21,9 @@ impl TypeSymbol {
             TypeSymbol::Primitive(primitive_type_symbol) => {
                 Rc::new(RefCell::new(primitive_type_symbol))
             }
-            TypeSymbol::Class(class_symbol) => {
-                class_symbol as Rc<RefCell<dyn Symbol>>
-            }
-            TypeSymbol::Interface(interface_symbol) => {
-                interface_symbol as Rc<RefCell<dyn Symbol>>
-            }
-            TypeSymbol::Generic(generic_symbol) => {
-                generic_symbol as Rc<RefCell<dyn Symbol>>
-            }
+            TypeSymbol::Class(class_symbol) => class_symbol as Rc<RefCell<dyn Symbol>>,
+            TypeSymbol::Interface(interface_symbol) => interface_symbol as Rc<RefCell<dyn Symbol>>,
+            TypeSymbol::Generic(generic_symbol) => generic_symbol as Rc<RefCell<dyn Symbol>>,
         }
     }
 }
diff --git a/src/name_analysis/symbol/use_symbol.rs b/src/name_analysis/symbol/use_symbol.rs
index 0a5da5d..a2a0f77 100644
--- a/src/name_analysis/symbol/use_symbol.rs
+++ b/src/name_analysis/symbol/use_symbol.rs
@@ -43,7 +43,7 @@ impl ConcreteUseSymbol {
     pub fn declared_name(&self) -> &str {
         self.fqn_parts.last().unwrap()
     }
-    
+
     pub fn declared_name_owned(&self) -> Rc<str> {
         self.fqn_parts.last().unwrap().clone()
     }
@@ -87,15 +87,15 @@ impl StarUseSymbol {
             resolved_symbols: vec![],
         }
     }
-    
+
     pub fn fqn_parts(&self) -> &[Rc<str>] {
         &self.fqn_parts
     }
-    
+
     pub fn resolved_symbols(&self) -> &[UsableSymbol] {
         &self.resolved_symbols
     }
-    
+
     pub fn set_resolved_symbols(&mut self, symbols: Vec<UsableSymbol>) {
         self.resolved_symbols = symbols;
     }
diff --git a/src/name_analysis/symbol/variable_symbol.rs b/src/name_analysis/symbol/variable_symbol.rs
index 466d90b..401646a 100644
--- a/src/name_analysis/symbol/variable_symbol.rs
+++ b/src/name_analysis/symbol/variable_symbol.rs
@@ -1,8 +1,8 @@
 use crate::name_analysis::symbol::source_definition::SourceDefinition;
 use crate::name_analysis::symbol::Symbol;
+use crate::type_analysis::kinds::Kind;
 use std::fmt::{Debug, Formatter};
 use std::rc::Rc;
-use crate::type_analysis::kinds::Kind;
 
 pub struct VariableSymbol {
     declared_name: Rc<str>,
@@ -28,7 +28,7 @@ impl VariableSymbol {
     pub fn declared_name(&self) -> &str {
         &self.declared_name
     }
-    
+
     pub fn declared_name_owned(&self) -> Rc<str> {
         self.declared_name.clone()
     }
@@ -36,11 +36,11 @@ impl VariableSymbol {
     pub fn is_mutable(&self) -> bool {
         self.is_mutable
     }
-    
+
     pub fn set_analyzed_kind(&mut self, analyzed_kind: Kind) {
         self.analyzed_kind = Some(analyzed_kind);
     }
-    
+
     pub fn analyzed_kind(&self) -> Option<&Kind> {
         self.analyzed_kind.as_ref()
     }
diff --git a/src/name_analysis/symbol_table/fqn_context.rs b/src/name_analysis/symbol_table/fqn_context.rs
index 2eb19d9..63c5607 100644
--- a/src/name_analysis/symbol_table/fqn_context.rs
+++ b/src/name_analysis/symbol_table/fqn_context.rs
@@ -17,11 +17,11 @@ impl FqnContext {
     pub fn pop(&mut self) {
         self.stack.pop();
     }
-    
+
     pub fn current_fqn(&self) -> Vec<&str> {
         self.stack.iter().map(|part| part.as_ref()).collect()
     }
-    
+
     pub fn current_fqn_owned(&self) -> Vec<Rc<str>> {
         self.stack.clone()
     }
diff --git a/src/name_analysis/symbol_table/mod.rs b/src/name_analysis/symbol_table/mod.rs
index 6d841f6..cd486c3 100644
--- a/src/name_analysis/symbol_table/mod.rs
+++ b/src/name_analysis/symbol_table/mod.rs
@@ -141,7 +141,9 @@ impl SymbolTable {
                 .find_usable_symbol(concrete_use_symbol.borrow().fqn_parts())
             {
                 Ok(usable_symbol) => {
-                    concrete_use_symbol.borrow_mut().set_resolved_symbol(usable_symbol);
+                    concrete_use_symbol
+                        .borrow_mut()
+                        .set_resolved_symbol(usable_symbol);
                 }
                 Err(symbol_lookup_error) => {
                     // panic because this is definitely a compiler/configuration error
@@ -153,10 +155,13 @@ impl SymbolTable {
                 }
             }
         }
-        
+
         for star_use_symbol in global_scope.star_use_symbols() {
             let mut star_use_symbol_ref_mut = star_use_symbol.borrow_mut();
-            match self.symbol_tree.find_all_by_base_fqn(star_use_symbol_ref_mut.fqn_parts()) {
+            match self
+                .symbol_tree
+                .find_all_by_base_fqn(star_use_symbol_ref_mut.fqn_parts())
+            {
                 Ok(usable_symbols) => {
                     star_use_symbol_ref_mut.set_resolved_symbols(usable_symbols);
                 }
diff --git a/src/name_analysis/symbol_table/scope.rs b/src/name_analysis/symbol_table/scope.rs
index 7cb37e7..e272733 100644
--- a/src/name_analysis/symbol_table/scope.rs
+++ b/src/name_analysis/symbol_table/scope.rs
@@ -69,11 +69,11 @@ impl Scope {
     pub fn id(&self) -> usize {
         self.id
     }
-    
+
     pub fn concrete_use_symbols(&self) -> impl Iterator<Item = &Rc<RefCell<ConcreteUseSymbol>>> {
         self.concrete_use_symbols.values()
     }
-    
+
     pub fn star_use_symbols(&self) -> impl Iterator<Item = &Rc<RefCell<StarUseSymbol>>> {
         self.star_use_symbols.values()
     }
@@ -225,7 +225,7 @@ impl Scope {
         // which are in scope. If we don't find any of those, try looking through imports; start
         // with concrete imports by declared name; if none of those match, check all resolved
         // symbols of the star imports until one is found or none.
-        // !! Eventually consider registering star-imported symbols in a scope so that we can just 
+        // !! Eventually consider registering star-imported symbols in a scope so that we can just
         // check them via the hash maps instead of looping through the star symbols.
         self.class_symbols
             .get(declared_name)
@@ -255,16 +255,14 @@ impl Scope {
             .or_else(|| {
                 if let Some(concrete_use_symbol) = self.concrete_use_symbols.get(declared_name) {
                     return match concrete_use_symbol.borrow().resolved_symbol().unwrap() {
-                        UsableSymbol::Interface(_) => {
-                            None
-                        }
+                        UsableSymbol::Interface(_) => None,
                         UsableSymbol::Class(class_symbol) => {
                             Some(ExpressibleSymbol::Class(class_symbol.clone()))
                         }
                         UsableSymbol::Function(function_symbol) => {
                             Some(ExpressibleSymbol::Function(function_symbol.clone()))
                         }
-                    }
+                    };
                 }
                 None
             })
@@ -279,7 +277,9 @@ impl Scope {
                             }
                             UsableSymbol::Function(function_symbol) => {
                                 if function_symbol.borrow().declared_name() == declared_name {
-                                    return Some(ExpressibleSymbol::Function(function_symbol.clone()));
+                                    return Some(ExpressibleSymbol::Function(
+                                        function_symbol.clone(),
+                                    ));
                                 }
                             }
                             _ => continue,
diff --git a/src/type_analysis/kinds/class_kind.rs b/src/type_analysis/kinds/class_kind.rs
index b278736..edf3621 100644
--- a/src/type_analysis/kinds/class_kind.rs
+++ b/src/type_analysis/kinds/class_kind.rs
@@ -3,18 +3,18 @@ use std::rc::Rc;
 
 #[derive(Debug, Eq, PartialEq, Clone)]
 pub struct ClassKind {
-    fqn: Rc<str>
+    fqn: Rc<str>,
 }
 
 impl ClassKind {
     pub fn new(fqn: &str) -> Self {
         Self { fqn: fqn.into() }
     }
-    
+
     pub fn fqn(&self) -> &str {
         &self.fqn
     }
-    
+
     pub fn fqn_owned(&self) -> Rc<str> {
         self.fqn.clone()
     }
@@ -24,4 +24,4 @@ impl Display for ClassKind {
     fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
         write!(f, "{}", self.fqn)
     }
-}
\ No newline at end of file
+}
diff --git a/src/type_analysis/kinds/primitive_kind.rs b/src/type_analysis/kinds/primitive_kind.rs
index 3ed9504..ae37583 100644
--- a/src/type_analysis/kinds/primitive_kind.rs
+++ b/src/type_analysis/kinds/primitive_kind.rs
@@ -1,5 +1,5 @@
-use std::fmt::Display;
 use crate::type_analysis::kinds::Kind;
+use std::fmt::Display;
 
 #[derive(Debug, Eq, PartialEq, Clone)]
 pub enum PrimitiveKind {
diff --git a/src/type_analysis/mod.rs b/src/type_analysis/mod.rs
index e1c3a8a..77b29ca 100644
--- a/src/type_analysis/mod.rs
+++ b/src/type_analysis/mod.rs
@@ -200,11 +200,10 @@ fn ta_additive_expression(
                     "Incompatible types for additive expression: {} vs. {}",
                     left_kind, right_kind
                 ))
-                .with_label(Label::primary(
-                    *additive_expression.file_id(),
-                    *additive_expression.range(),
-                )
-                    .with_message("Incompatible types here.")),
+                .with_label(
+                    Label::primary(*additive_expression.file_id(), *additive_expression.range())
+                        .with_message("Incompatible types here."),
+                ),
         );
     }
     additive_expression.set_analyzed_kind(left_kind);
diff --git a/src/vm/mem/mod.rs b/src/vm/mem/mod.rs
index 8793b1f..852bc0b 100644
--- a/src/vm/mem/mod.rs
+++ b/src/vm/mem/mod.rs
@@ -394,7 +394,9 @@ impl Drop for GcHeap {
         let mut current = self.head().take();
         while let Some(gc_any) = &mut current {
             let next = gc_any.next();
-            unsafe { gc_any.dealloc(); }
+            unsafe {
+                gc_any.dealloc();
+            }
             current = next;
         }
     }
@@ -464,7 +466,9 @@ fn collect_garbage(stack: &Vec<DvmValue>, heap: &mut GcHeap) {
             }
             heap.subtract_current_size(current_gc.allocated_size());
             collected_size += current_gc.dynamic_size();
-            unsafe { current_gc.dealloc(); }
+            unsafe {
+                current_gc.dealloc();
+            }
         } else {
             current_gc.set_color(GcColor::White);
             previous = Some(current_gc.clone());
diff --git a/src/vm/mod.rs b/src/vm/mod.rs
index 3b8b9ed..59b5ecd 100644
--- a/src/vm/mod.rs
+++ b/src/vm/mod.rs
@@ -344,7 +344,7 @@ fn constant_to_value(constant: &DvmConstant) -> DvmValue {
 
 fn immediate_to_value(immediate: &Immediate) -> DvmValue {
     match immediate {
-        _ => todo!()
+        _ => todo!(),
     }
 }