Add missing_const_for_fn clippy lint (#8498)

crates/storage/nippy-jar/src/compression/zstd.rs

@@ -40,7 +40,7 @@ pub struct Zstd {
 
 impl Zstd {
     /// Creates new [`Zstd`].
-    pub fn new(use_dict: bool, max_dict_size: usize, columns: usize) -> Self {
+    pub const fn new(use_dict: bool, max_dict_size: usize, columns: usize) -> Self {
         Self {
             state: if use_dict { ZstdState::PendingDictionary } else { ZstdState::Ready },
             level: 0,
@@ -51,7 +51,7 @@ impl Zstd {
         }
     }
 
-    pub fn with_level(mut self, level: i32) -> Self {
+    pub const fn with_level(mut self, level: i32) -> Self {
         self.level = level;
         self
     }
@@ -321,7 +321,7 @@ pub(crate) enum ZstdDictionary<'a> {
 
 impl<'a> ZstdDictionary<'a> {
     /// Returns a reference to the expected `RawDictionary`
-    pub(crate) fn raw(&self) -> Option<&RawDictionary> {
+    pub(crate) const fn raw(&self) -> Option<&RawDictionary> {
         match self {
             ZstdDictionary::Raw(dict) => Some(dict),
             ZstdDictionary::Loaded(_) => None,
@@ -329,7 +329,7 @@ impl<'a> ZstdDictionary<'a> {
     }
 
     /// Returns a reference to the expected `DecoderDictionary`
-    pub(crate) fn loaded(&self) -> Option<&DecoderDictionary<'_>> {
+    pub(crate) const fn loaded(&self) -> Option<&DecoderDictionary<'_>> {
         match self {
             ZstdDictionary::Raw(_) => None,
             ZstdDictionary::Loaded(dict) => Some(dict),

crates/storage/nippy-jar/src/cursor.rs

@@ -53,12 +53,12 @@ impl<'a, H: NippyJarHeader> NippyJarCursor<'a, H> {
     }
 
     /// Returns a reference to the related [`NippyJar`]
-    pub fn jar(&self) -> &NippyJar<H> {
+    pub const fn jar(&self) -> &NippyJar<H> {
         self.jar
     }
 
     /// Returns current row index of the cursor
-    pub fn row_index(&self) -> u64 {
+    pub const fn row_index(&self) -> u64 {
         self.row
     }
 

crates/storage/nippy-jar/src/lib.rs

@@ -153,7 +153,7 @@ impl NippyJar<()> {
     }
 
     /// Whether this [`NippyJar`] uses a [`InclusionFilters`] and [`Functions`].
-    pub fn uses_filters(&self) -> bool {
+    pub const fn uses_filters(&self) -> bool {
         self.filter.is_some() && self.phf.is_some()
     }
 }
@@ -207,17 +207,17 @@ impl<H: NippyJarHeader> NippyJar<H> {
     }
 
     /// Gets a reference to the user header.
-    pub fn user_header(&self) -> &H {
+    pub const fn user_header(&self) -> &H {
         &self.user_header
     }
 
     /// Gets total columns in jar.
-    pub fn columns(&self) -> usize {
+    pub const fn columns(&self) -> usize {
         self.columns
     }
 
     /// Gets total rows in jar.
-    pub fn rows(&self) -> usize {
+    pub const fn rows(&self) -> usize {
         self.rows
     }
 
@@ -232,7 +232,7 @@ impl<H: NippyJarHeader> NippyJar<H> {
     }
 
     /// Gets a reference to the compressor.
-    pub fn compressor(&self) -> Option<&Compressors> {
+    pub const fn compressor(&self) -> Option<&Compressors> {
         self.compressor.as_ref()
     }
 
@@ -543,7 +543,7 @@ impl DataReader {
     }
 
     /// Returns number of bytes that represent one offset.
-    pub fn offset_size(&self) -> u8 {
+    pub const fn offset_size(&self) -> u8 {
         self.offset_size
     }
 

crates/storage/nippy-jar/src/phf/fmph.rs

@@ -12,7 +12,7 @@ pub struct Fmph {
 }
 
 impl Fmph {
-    pub fn new() -> Self {
+    pub const fn new() -> Self {
         Self { function: None }
     }
 }

crates/storage/nippy-jar/src/phf/go_fmph.rs

@@ -12,7 +12,7 @@ pub struct GoFmph {
 }
 
 impl GoFmph {
-    pub fn new() -> Self {
+    pub const fn new() -> Self {
         Self { function: None }
     }
 }

crates/storage/nippy-jar/src/writer.rs

@@ -71,7 +71,7 @@ impl<H: NippyJarHeader> NippyJarWriter<H> {
     }
 
     /// Returns a reference to `H` of [`NippyJar`]
-    pub fn user_header(&self) -> &H {
+    pub const fn user_header(&self) -> &H {
         &self.jar.user_header
     }
 
@@ -81,7 +81,7 @@ impl<H: NippyJarHeader> NippyJarWriter<H> {
     }
 
     /// Gets total writer rows in jar.
-    pub fn rows(&self) -> usize {
+    pub const fn rows(&self) -> usize {
         self.jar.rows()
     }
 
@@ -451,12 +451,12 @@ impl<H: NippyJarHeader> NippyJarWriter<H> {
     }
 
     #[cfg(test)]
-    pub fn max_row_size(&self) -> usize {
+    pub const fn max_row_size(&self) -> usize {
         self.jar.max_row_size
     }
 
     #[cfg(test)]
-    pub fn column(&self) -> usize {
+    pub const fn column(&self) -> usize {
         self.column
     }