Address all the clippy lints (#233)

* Fix literals in vk.rs

* Address all the other clippy lints in ash

* Module level clippy lint

* More lints

* Make hashmaps generic for clippy

* Remove unused macro import

ash/src/device.rs

@@ -1,4 +1,4 @@
-#![allow(dead_code)]
+#![allow(clippy::trivially_copy_pass_by_ref)]
 use crate::prelude::*;
 use crate::vk;
 use crate::RawPtr;

ash/src/entry.rs

@@ -13,19 +13,19 @@ use std::ptr;
 use std::sync::Arc;
 
 #[cfg(windows)]
-const LIB_PATH: &'static str = "vulkan-1.dll";
+const LIB_PATH: &str = "vulkan-1.dll";
 
 #[cfg(all(
     unix,
     not(any(target_os = "macos", target_os = "ios", target_os = "android"))
 ))]
-const LIB_PATH: &'static str = "libvulkan.so.1";
+const LIB_PATH: &str = "libvulkan.so.1";
 
 #[cfg(target_os = "android")]
-const LIB_PATH: &'static str = "libvulkan.so";
+const LIB_PATH: &str = "libvulkan.so";
 
 #[cfg(any(target_os = "macos", target_os = "ios"))]
-const LIB_PATH: &'static str = "libvulkan.dylib";
+const LIB_PATH: &str = "libvulkan.dylib";
 
 /// Function loader
 pub type Entry = EntryCustom<Arc<DynamicLibrary>>;
@@ -126,12 +126,12 @@ pub trait EntryV1_0 {
     }
 
     #[doc = "<https://www.khronos.org/registry/vulkan/specs/1.1-extensions/man/html/vkGetInstanceProcAddr.html>"]
-    fn get_instance_proc_addr(
+    unsafe fn get_instance_proc_addr(
         &self,
         instance: vk::Instance,
         p_name: *const c_char,
     ) -> vk::PFN_vkVoidFunction {
-        unsafe { self.static_fn().get_instance_proc_addr(instance, p_name) }
+        self.static_fn().get_instance_proc_addr(instance, p_name)
     }
 }
 
@@ -200,7 +200,7 @@ impl EntryCustom<Arc<DynamicLibrary>> {
             || {
                 DynamicLibrary::open(Some(&Path::new(LIB_PATH)))
                     .map_err(|err| LoadingError::LibraryLoadError(err.clone()))
-                    .map(|dl| Arc::new(dl))
+                    .map(Arc::new)
             },
             |vk_lib, name| unsafe {
                 vk_lib

ash/src/extensions/experimental/amd.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::unreadable_literal)]
+
 /*
  ***********************************************************************************************************************
  *

ash/src/extensions/ext/debug_marker.rs

@@ -15,9 +15,7 @@ impl DebugMarker {
         let debug_marker_fn = vk::ExtDebugMarkerFn::load(|name| unsafe {
             mem::transmute(instance.get_device_proc_addr(device.handle(), name.as_ptr()))
         });
-        DebugMarker {
+        DebugMarker { debug_marker_fn }
-            debug_marker_fn: debug_marker_fn,
-        }
     }
 
     pub fn name() -> &'static CStr {

ash/src/extensions/khr/display_swapchain.rs

@@ -19,7 +19,7 @@ impl DisplaySwapchain {
         });
         DisplaySwapchain {
             handle: device.handle(),
-            swapchain_fn: swapchain_fn,
+            swapchain_fn,
         }
     }
 

ash/src/extensions/khr/surface.rs

@@ -20,7 +20,7 @@ impl Surface {
         });
         Surface {
             handle: instance.handle(),
-            surface_fn: surface_fn,
+            surface_fn,
         }
     }
 

ash/src/extensions/khr/swapchain.rs

@@ -20,7 +20,7 @@ impl Swapchain {
         });
         Swapchain {
             handle: device.handle(),
-            swapchain_fn: swapchain_fn,
+            swapchain_fn,
         }
     }
 

ash/src/lib.rs

@@ -1,3 +1,4 @@
+#![allow(clippy::too_many_arguments)]
 //! # Vulkan API
 //!
 //! <https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/index.html>
@@ -43,8 +44,8 @@ pub trait RawPtr<T> {
 
 impl<'r, T> RawPtr<T> for Option<&'r T> {
     fn as_raw_ptr(&self) -> *const T {
-        match self {
+        match *self {
-            &Some(inner) => inner as *const T,
+            Some(inner) => inner as *const T,
 
             _ => ::std::ptr::null(),
         }

ash/src/util.rs

@@ -122,13 +122,13 @@ pub fn read_spv<R: io::Read + io::Seek>(x: &mut R) -> io::Result<Vec<u32>> {
         ))?;
         result.set_len(words);
     }
-    const MAGIC_NUMBER: u32 = 0x07230203;
+    const MAGIC_NUMBER: u32 = 0x0723_0203;
-    if result.len() > 0 && result[0] == MAGIC_NUMBER.swap_bytes() {
+    if !result.is_empty() && result[0] == MAGIC_NUMBER.swap_bytes() {
         for word in &mut result {
             *word = word.swap_bytes();
         }
     }
-    if result.len() == 0 || result[0] != MAGIC_NUMBER {
+    if result.is_empty() || result[0] != MAGIC_NUMBER {
         return Err(io::Error::new(
             io::ErrorKind::InvalidData,
             "input missing SPIR-V magic number",

examples/src/bin/texture.rs

@@ -522,7 +522,7 @@ fn main() {
         let tex_descriptor = vk::DescriptorImageInfo {
             image_layout: vk::ImageLayout::SHADER_READ_ONLY_OPTIMAL,
             image_view: tex_image_view,
-            sampler: sampler,
+            sampler,
         };
 
         let write_desc_sets = [
@@ -624,7 +624,7 @@ fn main() {
             max_depth: 1.0,
         }];
         let scissors = [vk::Rect2D {
-            extent: base.surface_resolution.clone(),
+            extent: base.surface_resolution,
             ..Default::default()
         }];
         let viewport_state_info = vk::PipelineViewportStateCreateInfo::builder()
@@ -652,8 +652,8 @@ fn main() {
             depth_test_enable: 1,
             depth_write_enable: 1,
             depth_compare_op: vk::CompareOp::LESS_OR_EQUAL,
-            front: noop_stencil_state.clone(),
+            front: noop_stencil_state,
-            back: noop_stencil_state.clone(),
+            back: noop_stencil_state,
             max_depth_bounds: 1.0,
             ..Default::default()
         };
@@ -729,7 +729,7 @@ fn main() {
                 .framebuffer(framebuffers[present_index as usize])
                 .render_area(vk::Rect2D {
                     offset: vk::Offset2D { x: 0, y: 0 },
-                    extent: base.surface_resolution.clone(),
+                    extent: base.surface_resolution,
                 })
                 .clear_values(&clear_values);
 

examples/src/bin/triangle.rs

@@ -284,7 +284,7 @@ fn main() {
         }];
         let scissors = [vk::Rect2D {
             offset: vk::Offset2D { x: 0, y: 0 },
-            extent: base.surface_resolution.clone(),
+            extent: base.surface_resolution,
         }];
         let viewport_state_info = vk::PipelineViewportStateCreateInfo::builder()
             .scissors(&scissors)
@@ -311,8 +311,8 @@ fn main() {
             depth_test_enable: 1,
             depth_write_enable: 1,
             depth_compare_op: vk::CompareOp::LESS_OR_EQUAL,
-            front: noop_stencil_state.clone(),
+            front: noop_stencil_state,
-            back: noop_stencil_state.clone(),
+            back: noop_stencil_state,
             max_depth_bounds: 1.0,
             ..Default::default()
         };
@@ -387,7 +387,7 @@ fn main() {
                 .framebuffer(framebuffers[present_index as usize])
                 .render_area(vk::Rect2D {
                     offset: vk::Offset2D { x: 0, y: 0 },
-                    extent: base.surface_resolution.clone(),
+                    extent: base.surface_resolution,
                 })
                 .clear_values(&clear_values);
 

examples/src/lib.rs

@@ -1,4 +1,3 @@
-#[macro_use]
 extern crate ash;
 #[cfg(target_os = "windows")]
 extern crate winapi;
@@ -170,7 +169,7 @@ unsafe fn create_surface<E: EntryV1_0, I: InstanceV1_0>(
         s_type: vk::StructureType::WIN32_SURFACE_CREATE_INFO_KHR,
         p_next: ptr::null(),
         flags: Default::default(),
-        hinstance: hinstance,
+        hinstance,
         hwnd: hwnd as *const c_void,
     };
     let win32_surface_loader = Win32Surface::new(entry, instance);
@@ -245,12 +244,10 @@ pub fn find_memorytype_index_f<F: Fn(vk::MemoryPropertyFlags, vk::MemoryProperty
 ) -> Option<u32> {
     let mut memory_type_bits = memory_req.memory_type_bits;
     for (index, ref memory_type) in memory_prop.memory_types.iter().enumerate() {
-        if memory_type_bits & 1 == 1 {
+        if memory_type_bits & 1 == 1 && f(memory_type.property_flags, flags) {
-            if f(memory_type.property_flags, flags) {
+            return Some(index as u32);
-                return Some(index as u32);
-            }
         }
-        memory_type_bits = memory_type_bits >> 1;
+        memory_type_bits >>= 1;
     }
     None
 }
@@ -319,8 +316,8 @@ impl ExampleBase {
             let window = winit::WindowBuilder::new()
                 .with_title("Ash - Example")
                 .with_dimensions(winit::dpi::LogicalSize::new(
-                    window_width as f64,
+                    f64::from(window_width),
-                    window_height as f64,
+                    f64::from(window_height),
                 ))
                 .build(&events_loop)
                 .unwrap();
@@ -385,9 +382,10 @@ impl ExampleBase {
                                             surface,
                                         )
                                         .unwrap();
-                            match supports_graphic_and_surface {
+                            if supports_graphic_and_surface {
-                                true => Some((*pdevice, index)),
+                                Some((*pdevice, index))
-                                _ => None,
+                            } else {
+                                None
                             }
                         })
                         .nth(0)
@@ -429,7 +427,7 @@ impl ExampleBase {
                         format: vk::Format::B8G8R8_UNORM,
                         color_space: sfmt.color_space,
                     },
-                    _ => sfmt.clone(),
+                    _ => *sfmt,
                 })
                 .nth(0)
                 .expect("Unable to find suitable surface format.");
@@ -472,7 +470,7 @@ impl ExampleBase {
                 .min_image_count(desired_image_count)
                 .image_color_space(surface_format.color_space)
                 .image_format(surface_format.format)
-                .image_extent(surface_resolution.clone())
+                .image_extent(surface_resolution)
                 .image_usage(vk::ImageUsageFlags::COLOR_ATTACHMENT)
                 .image_sharing_mode(vk::SharingMode::EXCLUSIVE)
                 .pre_transform(pre_transform)
@@ -625,32 +623,32 @@ impl ExampleBase {
                 .unwrap();
             ExampleBase {
                 events_loop: RefCell::new(events_loop),
-                entry: entry,
+                entry,
-                instance: instance,
+                instance,
-                device: device,
+                device,
-                queue_family_index: queue_family_index,
+                queue_family_index,
-                pdevice: pdevice,
+                pdevice,
-                device_memory_properties: device_memory_properties,
+                device_memory_properties,
-                window: window,
+                window,
-                surface_loader: surface_loader,
+                surface_loader,
-                surface_format: surface_format,
+                surface_format,
-                present_queue: present_queue,
+                present_queue,
-                surface_resolution: surface_resolution,
+                surface_resolution,
-                swapchain_loader: swapchain_loader,
+                swapchain_loader,
-                swapchain: swapchain,
+                swapchain,
-                present_images: present_images,
+                present_images,
-                present_image_views: present_image_views,
+                present_image_views,
-                pool: pool,
+                pool,
-                draw_command_buffer: draw_command_buffer,
+                draw_command_buffer,
-                setup_command_buffer: setup_command_buffer,
+                setup_command_buffer,
-                depth_image: depth_image,
+                depth_image,
-                depth_image_view: depth_image_view,
+                depth_image_view,
-                present_complete_semaphore: present_complete_semaphore,
+                present_complete_semaphore,
-                rendering_complete_semaphore: rendering_complete_semaphore,
+                rendering_complete_semaphore,
-                surface: surface,
+                surface,
-                debug_call_back: debug_call_back,
+                debug_call_back,
-                debug_report_loader: debug_report_loader,
+                debug_report_loader,
-                depth_image_memory: depth_image_memory,
+                depth_image_memory,
             }
         }
     }

generator/src/lib.rs

@@ -15,6 +15,7 @@ use proc_macro2::{Literal, Term};
 use quote::Tokens;
 use std::collections::{BTreeMap, HashMap, HashSet};
 use std::fmt::Display;
+use std::hash::BuildHasher;
 use std::path::Path;
 use syn::Ident;
 
@@ -83,7 +84,7 @@ named!(inverse_number<&str, (CType, String)>,
 );
 
 named!(cfloat<&str, f32>,
-    terminated!(nom::float_s, char!('f'))
+    terminated!(nom::float, char!('f'))
 );
 
 fn khronos_link<S: Display>(name: &S) -> Literal {
@@ -429,6 +430,22 @@ impl quote::ToTokens for ConstVal {
         }
     }
 }
+
+// Interleaves a number, for example 100000 => 100_000. Mostly used to make clippy happy
+fn interleave_number(symbol: char, count: usize, n: &str) -> String {
+    let number: String = n
+        .chars()
+        .rev()
+        .enumerate()
+        .fold(String::new(), |mut acc, (idx, next)| {
+            if idx != 0 && idx % count == 0 {
+                acc.push(symbol);
+            }
+            acc.push(next);
+            acc
+        });
+    number.chars().rev().collect()
+}
 impl Constant {
     pub fn value(&self) -> Option<ConstVal> {
         match *self {
@@ -453,11 +470,13 @@ impl Constant {
     pub fn to_tokens(&self) -> Tokens {
         match *self {
             Constant::Number(n) => {
-                let term = Term::intern(&n.to_string());
+                let number = interleave_number('_', 3, &n.to_string());
+                let term = Term::intern(&number);
                 quote! {#term}
             }
             Constant::Hex(ref s) => {
-                let term = Term::intern(&format!("0x{}", s));
+                let number = interleave_number('_', 4, s);
+                let term = Term::intern(&format!("0x{}", number));
                 quote! {#term}
             }
             Constant::Text(ref text) => {
@@ -470,7 +489,9 @@ impl Constant {
             }
             Constant::BitPos(pos) => {
                 let value = 1 << pos;
-                let term = Term::intern(&format!("0b{:b}", value));
+                let bit_string = format!("{:b}", value);
+                let bit_string = interleave_number('_', 4, &bit_string);
+                let term = Term::intern(&format!("0b{}", bit_string));
                 quote! {#term}
             }
         }
@@ -501,8 +522,14 @@ impl Constant {
 
 pub trait FeatureExt {
     fn version_string(&self) -> String;
+    fn is_version(&self, major: u32, minor: u32) -> bool;
 }
 impl FeatureExt for vkxml::Feature {
+    fn is_version(&self, major: u32, minor: u32) -> bool {
+        let self_major = self.version as u32;
+        let self_minor = (self.version * 10.0) as u32 - self_major;
+        major == self_major && self_minor == minor
+    }
     fn version_string(&self) -> String {
         let mut version = format!("{}", self.version);
         if version.len() == 1 {
@@ -689,7 +716,7 @@ pub type CommandMap<'a> = HashMap<vkxml::Identifier, &'a vkxml::Command>;
 fn generate_function_pointers<'a>(
     ident: Ident,
     commands: &[&'a vkxml::Command],
-    fn_cache: &mut HashSet<&'a str>,
+    fn_cache: &mut HashSet<&'a str, impl BuildHasher>,
 ) -> quote::Tokens {
     let names: Vec<_> = commands.iter().map(|cmd| cmd.command_ident()).collect();
     let names_ref = &names;
@@ -711,9 +738,9 @@ fn generate_function_pointers<'a>(
             let ident = cmd.name.as_str();
             if !fn_cache.contains(ident) {
                 fn_cache.insert(ident);
-                return true;
+                true
             } else {
-                return false;
+                false
             }
         })
         .collect();
@@ -879,7 +906,7 @@ pub fn generate_extension_constants<'a>(
     extension_name: &str,
     extension_number: i64,
     extension_items: &'a [vk_parse::ExtensionChild],
-    const_cache: &mut HashSet<&'a str>,
+    const_cache: &mut HashSet<&'a str, impl BuildHasher>,
     const_values: &mut BTreeMap<Ident, Vec<Ident>>,
 ) -> quote::Tokens {
     use vk_parse::EnumSpec;
@@ -944,16 +971,14 @@ pub fn generate_extension_commands<'a>(
     extension_name: &str,
     items: &[vk_parse::ExtensionChild],
     cmd_map: &CommandMap<'a>,
-    fn_cache: &mut HashSet<&'a str>,
+    fn_cache: &mut HashSet<&'a str, impl BuildHasher>,
 ) -> Tokens {
     let commands = items
         .iter()
         .filter_map(|ext_item| match ext_item {
             vk_parse::ExtensionChild::Require { items, .. } => {
                 Some(items.iter().filter_map(|item| match item {
-                    vk_parse::InterfaceItem::Command { ref name, .. } => {
+                    vk_parse::InterfaceItem::Command { ref name, .. } => cmd_map.get(name).copied(),
-                        cmd_map.get(name).map(|c| *c)
-                    }
                     _ => None,
                 }))
             }
@@ -983,9 +1008,9 @@ pub fn generate_extension_commands<'a>(
 pub fn generate_extension<'a>(
     extension: &'a vk_parse::Extension,
     cmd_map: &CommandMap<'a>,
-    const_cache: &mut HashSet<&'a str>,
+    const_cache: &mut HashSet<&'a str, impl BuildHasher>,
     const_values: &mut BTreeMap<Ident, Vec<Ident>>,
-    fn_cache: &mut HashSet<&'a str>,
+    fn_cache: &mut HashSet<&'a str, impl BuildHasher>,
 ) -> Option<quote::Tokens> {
     // Okay this is a little bit odd. We need to generate all extensions, even disabled ones,
     // because otherwise some StructureTypes won't get generated. But we don't generate extensions
@@ -1018,7 +1043,7 @@ pub fn generate_typedef(typedef: &vkxml::Typedef) -> Tokens {
 }
 pub fn generate_bitmask(
     bitmask: &vkxml::Bitmask,
-    bitflags_cache: &mut HashSet<Ident>,
+    bitflags_cache: &mut HashSet<Ident, impl BuildHasher>,
     const_values: &mut BTreeMap<Ident, Vec<Ident>>,
 ) -> Option<Tokens> {
     // Workaround for empty bitmask
@@ -1035,8 +1060,8 @@ pub fn generate_bitmask(
     if bitflags_cache.contains(&ident) {
         return None;
     };
-    bitflags_cache.insert(ident.clone());
+    bitflags_cache.insert(ident);
-    const_values.insert(ident.clone(), Vec::new());
+    const_values.insert(ident, Vec::new());
     let khronos_link = khronos_link(&bitmask.name);
     Some(quote! {
         #[repr(transparent)]
@@ -1060,7 +1085,7 @@ pub fn variant_ident(enum_name: &str, variant_name: &str) -> Ident {
     let vendors = ["_NVX", "_KHR", "_EXT", "_NV", "_AMD", "_ANDROID", "_GOOGLE"];
     let mut struct_name = _name.to_shouty_snake_case();
     let vendor = vendors
-        .into_iter()
+        .iter()
         .find(|&vendor| struct_name.contains(vendor))
         .cloned()
         .unwrap_or("");
@@ -1124,9 +1149,9 @@ pub fn bitflags_impl_block(
 
 pub fn generate_enum<'a>(
     _enum: &'a vkxml::Enumeration,
-    const_cache: &mut HashSet<&'a str>,
+    const_cache: &mut HashSet<&'a str, impl BuildHasher>,
     const_values: &mut BTreeMap<Ident, Vec<Ident>>,
-    bitflags_cache: &mut HashSet<Ident>,
+    bitflags_cache: &mut HashSet<Ident, impl BuildHasher>,
 ) -> EnumType {
     let name = &_enum.name[2..];
     let _name = name.replace("FlagBits", "Flags");
@@ -1144,7 +1169,7 @@ pub fn generate_enum<'a>(
         const_cache.insert(constant.name.as_str());
         values.push(constant.variant_ident(&_enum.name));
     }
-    const_values.insert(ident.clone(), values);
+    const_values.insert(ident, values);
 
     let khronos_link = khronos_link(&_enum.name);
 
@@ -1154,13 +1179,15 @@ pub fn generate_enum<'a>(
             .iter()
             .filter_map(|constant| Constant::from_constant(constant).value())
             .fold(0, |acc, next| acc | next.bits());
-        let all_bits_term = Term::intern(&format!("0b{:b}", all_bits));
+        let bit_string = format!("{:b}", all_bits);
+        let bit_string = interleave_number('_', 4, &bit_string);
+        let all_bits_term = Term::intern(&format!("0b{}", bit_string));
 
         let impl_bitflags = bitflags_impl_block(ident, &_enum.name, &constants);
         if bitflags_cache.contains(&ident) {
             EnumType::Bitflags(quote! {})
         } else {
-            bitflags_cache.insert(ident.clone());
+            bitflags_cache.insert(ident);
             let q = quote! {
                 #[repr(transparent)]
                 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
@@ -1344,7 +1371,10 @@ pub fn derive_default(_struct: &vkxml::Struct) -> Option<Tokens> {
     };
     Some(q)
 }
-pub fn derive_debug(_struct: &vkxml::Struct, union_types: &HashSet<&str>) -> Option<Tokens> {
+pub fn derive_debug(
+    _struct: &vkxml::Struct,
+    union_types: &HashSet<&str, impl BuildHasher>,
+) -> Option<Tokens> {
     let name = name_to_tokens(&_struct.name);
     let members = _struct.elements.iter().filter_map(|elem| match *elem {
         vkxml::StructElement::Member(ref field) => Some(field),
@@ -1405,7 +1435,7 @@ pub fn derive_debug(_struct: &vkxml::Struct, union_types: &HashSet<&str>) -> Opt
 
 pub fn derive_setters(
     _struct: &vkxml::Struct,
-    root_struct_names: &HashSet<String>,
+    root_struct_names: &HashSet<String, impl BuildHasher>,
 ) -> Option<Tokens> {
     if &_struct.name == "VkBaseInStructure" || &_struct.name == "VkBaseOutStructure" {
         return None;
@@ -1421,7 +1451,7 @@ pub fn derive_setters(
 
     let (has_next, _is_next_const) = match members
         .clone()
-        .find(|field| field.param_ident().to_string() == "p_next")
+        .find(|field| field.param_ident().as_ref() == "p_next")
     {
         Some(p_next) => {
             if p_next.type_tokens(false).to_string().starts_with("*const") {
@@ -1449,7 +1479,7 @@ pub fn derive_setters(
                     if !array_size.starts_with("latexmath")
                         && !nofilter_count_members
                             .iter()
-                            .any(|n| *n == &(_struct.name.clone() + "." + field_name))
+                            .any(|&n| n == (_struct.name.clone() + "." + field_name))
                     {
                         return Some((*array_size).clone());
                     }
@@ -1561,8 +1591,7 @@ pub fn derive_setters(
                         let slice_param_ty_tokens = Term::intern(&slice_param_ty_tokens);
                         let ptr = Term::intern(ptr);
 
-                        match array_type {
+                        if let vkxml::ArrayType::Dynamic = array_type {
-                            vkxml::ArrayType::Dynamic => {
                                 return Some(quote!{
                                     pub fn #param_ident_short(mut self, #param_ident_short: #slice_param_ty_tokens) -> #name_builder<'a> {
                                         self.inner.#array_size_ident = #param_ident_short.len() as _;
@@ -1570,8 +1599,6 @@ pub fn derive_setters(
                                         self
                                     }
                                 });
-                            }
-                            _ => {}
                         }
                     }
                 }
@@ -1618,7 +1645,7 @@ pub fn derive_setters(
                 .map(|extends| name_to_tokens(&format!("Extends{}", name_to_tokens(&extends))))
                 .collect()
         })
-        .unwrap_or(vec![]);
+        .unwrap_or_else(|| vec![]);
 
     // We only implement a next methods for root structs with a `pnext` field.
     let next_function = if has_next && root_structs.is_empty() {
@@ -1735,8 +1762,8 @@ pub fn manual_derives(_struct: &vkxml::Struct) -> Tokens {
 }
 pub fn generate_struct(
     _struct: &vkxml::Struct,
-    root_struct_names: &HashSet<String>,
+    root_struct_names: &HashSet<String, impl BuildHasher>,
-    union_types: &HashSet<&str>,
+    union_types: &HashSet<&str, impl BuildHasher>,
 ) -> Tokens {
     let name = name_to_tokens(&_struct.name);
     let members = _struct.elements.iter().filter_map(|elem| match *elem {
@@ -1863,9 +1890,9 @@ pub fn root_struct_names(definitions: &[&vkxml::DefinitionsElement]) -> HashSet<
 }
 pub fn generate_definition(
     definition: &vkxml::DefinitionsElement,
-    union_types: &HashSet<&str>,
+    union_types: &HashSet<&str, impl BuildHasher>,
-    root_structs: &HashSet<String>,
+    root_structs: &HashSet<String, impl BuildHasher>,
-    bitflags_cache: &mut HashSet<Ident>,
+    bitflags_cache: &mut HashSet<Ident, impl BuildHasher>,
     const_values: &mut BTreeMap<Ident, Vec<Ident>>,
 ) -> Option<Tokens> {
     match *definition {
@@ -1885,7 +1912,7 @@ pub fn generate_definition(
 pub fn generate_feature<'a>(
     feature: &vkxml::Feature,
     commands: &CommandMap<'a>,
-    fn_cache: &mut HashSet<&'a str>,
+    fn_cache: &mut HashSet<&'a str, impl BuildHasher>,
 ) -> quote::Tokens {
     let (static_commands, entry_commands, device_commands, instance_commands) = feature
         .elements
@@ -1929,7 +1956,7 @@ pub fn generate_feature<'a>(
             },
         );
     let version = feature.version_string();
-    let static_fn = if feature.version == 1.0 {
+    let static_fn = if feature.is_version(1, 0) {
         generate_function_pointers(Ident::from("StaticFn"), &static_commands, fn_cache)
     } else {
         quote! {}
@@ -1962,7 +1989,7 @@ pub fn constant_name(name: &str) -> String {
 
 pub fn generate_constant<'a>(
     constant: &'a vkxml::Constant,
-    cache: &mut HashSet<&'a str>,
+    cache: &mut HashSet<&'a str, impl BuildHasher>,
 ) -> Tokens {
     cache.insert(constant.name.as_str());
     let c = Constant::from_constant(constant);
@@ -1982,7 +2009,7 @@ pub fn generate_constant<'a>(
 
 pub fn generate_feature_extension<'a>(
     registry: &'a vk_parse::Registry,
-    const_cache: &mut HashSet<&'a str>,
+    const_cache: &mut HashSet<&'a str, impl BuildHasher>,
     const_values: &mut BTreeMap<Ident, Vec<Ident>>,
 ) -> Tokens {
     let constants = registry.0.iter().filter_map(|item| match item {
@@ -2000,7 +2027,7 @@ pub fn generate_feature_extension<'a>(
     }
 }
 
-pub fn generate_const_debugs<'a>(const_values: &BTreeMap<Ident, Vec<Ident>>) -> Tokens {
+pub fn generate_const_debugs(const_values: &BTreeMap<Ident, Vec<Ident>>) -> Tokens {
     let impls = const_values.iter().map(|(ty, values)| {
         if ty.to_string().contains("Flags") {
             let cases = values.iter().map(|value| {
@@ -2061,7 +2088,7 @@ pub fn generate_const_debugs<'a>(const_values: &BTreeMap<Ident, Vec<Ident>>) ->
 }
 pub fn generate_aliases_of_types<'a>(
     types: &'a vk_parse::Types,
-    ty_cache: &mut HashSet<Ident>,
+    ty_cache: &mut HashSet<Ident, impl BuildHasher>,
 ) -> Tokens {
     let aliases = types
         .children
@@ -2075,7 +2102,7 @@ pub fn generate_aliases_of_types<'a>(
             if ty_cache.contains(&name_ident) {
                 return None;
             };
-            ty_cache.insert(name_ident.clone());
+            ty_cache.insert(name_ident);
             let alias_ident = name_to_tokens(alias);
             let tokens = quote! {
                 pub type #name_ident = #alias_ident;
@@ -2239,6 +2266,7 @@ pub fn write_source_code(path: &Path) {
     let version_macros = vk_version_macros();
     let platform_specific_types = platform_specific_types();
     let source_code = quote! {
+        #![allow(clippy::too_many_arguments, clippy::cognitive_complexity)]
         use std::fmt;
         use std::os::raw::*;
         /// Iterates through the pointer chain. Includes the item that is passed into the function.
@@ -2246,10 +2274,9 @@ pub fn write_source_code(path: &Path) {
         pub(crate) unsafe fn ptr_chain_iter<T>(
             ptr: &mut T,
         ) -> impl Iterator<Item = *mut BaseOutStructure> {
-            use std::ptr::null_mut;
             let ptr: *mut BaseOutStructure = ptr as *mut T as _;
             (0..).scan(ptr, |p_ptr, _| {
-                if *p_ptr == null_mut() {
+                if p_ptr.is_null() {
                     return None;
                 }
                 let n_ptr = (**p_ptr).p_next as *mut BaseOutStructure;