Make code more concise and simpler to read

lib/src/doc/admit.rs

@@ -13,9 +13,9 @@ impl<'a> Document<'a> {
 		_txn: &Transaction,
 		stm: &Statement,
 	) -> Result<(), Error> {
-		match self.id {
-			Some(_) => Ok(()),
-			None => match stm {
+		// Check that we are altering a record
+		if self.id.is_none() {
+			return match stm {
 				Statement::Create(_) => Err(Error::CreateStatement {
 					value: (*self.initial).clone(),
 				}),
@@ -32,7 +32,9 @@ impl<'a> Document<'a> {
 					value: (*self.initial).clone(),
 				}),
 				_ => unreachable!(),
-			},
-		}
+			};
+		}
+		// Carry on
+		Ok(())
 	}
 }

lib/src/doc/empty.rs

@@ -13,9 +13,13 @@ impl<'a> Document<'a> {
 		_txn: &Transaction,
 		_stm: &Statement,
 	) -> Result<(), Error> {
-		match self.id.is_some() && self.current.is_none() {
-			true => Err(Error::Ignore),
-			false => Ok(()),
+		// Check if this record exists
+		if self.id.is_some() {
+			if self.current.is_none() {
+				return Err(Error::Ignore);
 			}
 		}
+		// Carry on
+		Ok(())
+	}
 }