Fix Rust keyword inconsistency (#6794)

* Make Rust keyword escaping more consistent

* fix comment

* git clang format

Co-authored-by: Casper Neo <cneo@google.com>

tests/keyword_test/keywords_in_table_generated.rs

@@ -0,0 +1,170 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+extern crate flatbuffers;
+use std::mem;
+use std::cmp::Ordering;
+use self::flatbuffers::{EndianScalar, Follow};
+use super::*;
+pub enum KeywordsInTableOffset {}
+#[derive(Copy, Clone, PartialEq)]
+
+pub struct KeywordsInTable<'a> {
+  pub _tab: flatbuffers::Table<'a>,
+}
+
+impl<'a> flatbuffers::Follow<'a> for KeywordsInTable<'a> {
+    type Inner = KeywordsInTable<'a>;
+    #[inline]
+    fn follow(buf: &'a [u8], loc: usize) -> Self::Inner {
+        Self { _tab: flatbuffers::Table { buf, loc } }
+    }
+}
+
+impl<'a> KeywordsInTable<'a> {
+    pub const fn get_fully_qualified_name() -> &'static str {
+        "KeywordsInTable"
+    }
+
+    #[inline]
+    pub fn init_from_table(table: flatbuffers::Table<'a>) -> Self {
+        KeywordsInTable { _tab: table }
+    }
+    #[allow(unused_mut)]
+    pub fn create<'bldr: 'args, 'args: 'mut_bldr, 'mut_bldr>(
+        _fbb: &'mut_bldr mut flatbuffers::FlatBufferBuilder<'bldr>,
+        args: &'args KeywordsInTableArgs) -> flatbuffers::WIPOffset<KeywordsInTable<'bldr>> {
+      let mut builder = KeywordsInTableBuilder::new(_fbb);
+      builder.add_type_(args.type_);
+      builder.add_private(args.private);
+      builder.add_is(args.is);
+      builder.finish()
+    }
+
+    pub fn unpack(&self) -> KeywordsInTableT {
+      let is = self.is();
+      let private = self.private();
+      let type_ = self.type_();
+      KeywordsInTableT {
+        is,
+        private,
+        type_,
+      }
+    }
+    pub const VT_IS: flatbuffers::VOffsetT = 4;
+    pub const VT_PRIVATE: flatbuffers::VOffsetT = 6;
+    pub const VT_TYPE_: flatbuffers::VOffsetT = 8;
+
+  #[inline]
+  pub fn is(&self) -> ABC {
+    self._tab.get::<ABC>(KeywordsInTable::VT_IS, Some(ABC::void)).unwrap()
+  }
+  #[inline]
+  pub fn private(&self) -> public {
+    self._tab.get::<public>(KeywordsInTable::VT_PRIVATE, Some(public::NONE)).unwrap()
+  }
+  #[inline]
+  pub fn type_(&self) -> i32 {
+    self._tab.get::<i32>(KeywordsInTable::VT_TYPE_, Some(0)).unwrap()
+  }
+}
+
+impl flatbuffers::Verifiable for KeywordsInTable<'_> {
+  #[inline]
+  fn run_verifier(
+    v: &mut flatbuffers::Verifier, pos: usize
+  ) -> Result<(), flatbuffers::InvalidFlatbuffer> {
+    use self::flatbuffers::Verifiable;
+    v.visit_table(pos)?
+     .visit_field::<ABC>("is", Self::VT_IS, false)?
+     .visit_field::<public>("private", Self::VT_PRIVATE, false)?
+     .visit_field::<i32>("type_", Self::VT_TYPE_, false)?
+     .finish();
+    Ok(())
+  }
+}
+pub struct KeywordsInTableArgs {
+    pub is: ABC,
+    pub private: public,
+    pub type_: i32,
+}
+impl<'a> Default for KeywordsInTableArgs {
+    #[inline]
+    fn default() -> Self {
+        KeywordsInTableArgs {
+            is: ABC::void,
+            private: public::NONE,
+            type_: 0,
+        }
+    }
+}
+pub struct KeywordsInTableBuilder<'a: 'b, 'b> {
+  fbb_: &'b mut flatbuffers::FlatBufferBuilder<'a>,
+  start_: flatbuffers::WIPOffset<flatbuffers::TableUnfinishedWIPOffset>,
+}
+impl<'a: 'b, 'b> KeywordsInTableBuilder<'a, 'b> {
+  #[inline]
+  pub fn add_is(&mut self, is: ABC) {
+    self.fbb_.push_slot::<ABC>(KeywordsInTable::VT_IS, is, ABC::void);
+  }
+  #[inline]
+  pub fn add_private(&mut self, private: public) {
+    self.fbb_.push_slot::<public>(KeywordsInTable::VT_PRIVATE, private, public::NONE);
+  }
+  #[inline]
+  pub fn add_type_(&mut self, type_: i32) {
+    self.fbb_.push_slot::<i32>(KeywordsInTable::VT_TYPE_, type_, 0);
+  }
+  #[inline]
+  pub fn new(_fbb: &'b mut flatbuffers::FlatBufferBuilder<'a>) -> KeywordsInTableBuilder<'a, 'b> {
+    let start = _fbb.start_table();
+    KeywordsInTableBuilder {
+      fbb_: _fbb,
+      start_: start,
+    }
+  }
+  #[inline]
+  pub fn finish(self) -> flatbuffers::WIPOffset<KeywordsInTable<'a>> {
+    let o = self.fbb_.end_table(self.start_);
+    flatbuffers::WIPOffset::new(o.value())
+  }
+}
+
+impl std::fmt::Debug for KeywordsInTable<'_> {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    let mut ds = f.debug_struct("KeywordsInTable");
+      ds.field("is", &self.is());
+      ds.field("private", &self.private());
+      ds.field("type_", &self.type_());
+      ds.finish()
+  }
+}
+#[non_exhaustive]
+#[derive(Debug, Clone, PartialEq)]
+pub struct KeywordsInTableT {
+  pub is: ABC,
+  pub private: public,
+  pub type_: i32,
+}
+impl Default for KeywordsInTableT {
+  fn default() -> Self {
+    Self {
+      is: ABC::void,
+      private: public::NONE,
+      type_: 0,
+    }
+  }
+}
+impl KeywordsInTableT {
+  pub fn pack<'b>(
+    &self,
+    _fbb: &mut flatbuffers::FlatBufferBuilder<'b>
+  ) -> flatbuffers::WIPOffset<KeywordsInTable<'b>> {
+    let is = self.is;
+    let private = self.private;
+    let type_ = self.type_;
+    KeywordsInTable::create(_fbb, &KeywordsInTableArgs{
+      is,
+      private,
+      type_,
+    })
+  }
+}