Updates Rust codegen to use proper indentation (#8952)

* Fixes identation of generated Rust code

* Regenerates generated schemas

tests/optional_scalars/mod.rs

@@ -1,9 +1,9 @@
 // Automatically generated by the Flatbuffers compiler. Do not modify.
 // @generated
 pub mod optional_scalars {
-  use super::*;
-  mod optional_byte_generated;
-  pub use self::optional_byte_generated::*;
-  mod scalar_stuff_generated;
-  pub use self::scalar_stuff_generated::*;
+    use super::*;
+    mod optional_byte_generated;
+    pub use self::optional_byte_generated::*;
+    mod scalar_stuff_generated;
+    pub use self::scalar_stuff_generated::*;
 } // optional_scalars

tests/optional_scalars/optional_scalars/optional_byte_generated.rs

@@ -12,9 +12,9 @@ pub const ENUM_MAX_OPTIONAL_BYTE: i8 = 2;
 #[deprecated(since = "2.0.0", note = "Use associated constants instead. This will no longer be generated in 2021.")]
 #[allow(non_camel_case_types)]
 pub const ENUM_VALUES_OPTIONAL_BYTE: [OptionalByte; 3] = [
-  OptionalByte::None,
-  OptionalByte::One,
-  OptionalByte::Two,
+    OptionalByte::None,
+    OptionalByte::One,
+    OptionalByte::Two,
 ];
 
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
@@ -23,47 +23,47 @@ pub struct OptionalByte(pub i8);
 
 #[allow(non_upper_case_globals)]
 impl OptionalByte {
-  pub const None: Self = Self(0);
-  pub const One: Self = Self(1);
-  pub const Two: Self = Self(2);
+    pub const None: Self = Self(0);
+    pub const One: Self = Self(1);
+    pub const Two: Self = Self(2);
 
-  pub const ENUM_MIN: i8 = 0;
-  pub const ENUM_MAX: i8 = 2;
-  pub const ENUM_VALUES: &'static [Self] = &[
-    Self::None,
-    Self::One,
-    Self::Two,
-  ];
+    pub const ENUM_MIN: i8 = 0;
+    pub const ENUM_MAX: i8 = 2;
+    pub const ENUM_VALUES: &'static [Self] = &[
+        Self::None,
+        Self::One,
+        Self::Two,
+    ];
 
-  /// Returns the variant's name or "" if unknown.
-  pub fn variant_name(self) -> Option<&'static str> {
-    match self {
-      Self::None => Some("None"),
-      Self::One => Some("One"),
-      Self::Two => Some("Two"),
-      _ => None,
+    /// Returns the variant's name or "" if unknown.
+    pub fn variant_name(self) -> Option<&'static str> {
+        match self {
+            Self::None => Some("None"),
+            Self::One => Some("One"),
+            Self::Two => Some("Two"),
+            _ => None,
+        }
     }
-  }
 }
 
 impl ::core::fmt::Debug for OptionalByte {
-  fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
-    if let Some(name) = self.variant_name() {
-      f.write_str(name)
-    } else {
-      f.write_fmt(format_args!("<UNKNOWN {:?}>", self.0))
+    fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
+        if let Some(name) = self.variant_name() {
+            f.write_str(name)
+        } else {
+            f.write_fmt(format_args!("<UNKNOWN {:?}>", self.0))
+        }
     }
-  }
 }
 
 impl<'a> ::flatbuffers::Follow<'a> for OptionalByte {
-  type Inner = Self;
+    type Inner = Self;
 
-  #[inline]
-  unsafe fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
-    let b = unsafe { ::flatbuffers::read_scalar_at::<i8>(buf, loc) };
-    Self(b)
-  }
+    #[inline]
+    unsafe fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
+        let b = unsafe { ::flatbuffers::read_scalar_at::<i8>(buf, loc) };
+        Self(b)
+    }
 }
 
 impl ::flatbuffers::Push for OptionalByte {
@@ -76,28 +76,28 @@ impl ::flatbuffers::Push for OptionalByte {
 }
 
 impl ::flatbuffers::EndianScalar for OptionalByte {
-  type Scalar = i8;
+    type Scalar = i8;
 
-  #[inline]
-  fn to_little_endian(self) -> i8 {
-    self.0.to_le()
-  }
+    #[inline]
+    fn to_little_endian(self) -> i8 {
+        self.0.to_le()
+    }
 
-  #[inline]
-  #[allow(clippy::wrong_self_convention)]
-  fn from_little_endian(v: i8) -> Self {
-    let b = i8::from_le(v);
-    Self(b)
-  }
+    #[inline]
+    #[allow(clippy::wrong_self_convention)]
+    fn from_little_endian(v: i8) -> Self {
+        let b = i8::from_le(v);
+        Self(b)
+    }
 }
 
 impl<'a> ::flatbuffers::Verifiable for OptionalByte {
-  #[inline]
-  fn run_verifier(
-    v: &mut ::flatbuffers::Verifier, pos: usize
-  ) -> Result<(), ::flatbuffers::InvalidFlatbuffer> {
-    i8::run_verifier(v, pos)
-  }
+    #[inline]
+    fn run_verifier(
+        v: &mut ::flatbuffers::Verifier, pos: usize
+    ) -> Result<(), ::flatbuffers::InvalidFlatbuffer> {
+        i8::run_verifier(v, pos)
+    }
 }
 
 impl ::flatbuffers::SimpleToVerifyInSlice for OptionalByte {}