feat: expose some useful types in hotfix-message (#173)

* Expose some useful types in hotfix-message

* Use new helper to construct message configuration with separator

Author: davidsteiner

crates/hotfix-message/src/lib.rs

@@ -17,4 +17,5 @@ pub use encoding::fix42;
 pub use encoding::fix44;
 pub use hotfix_derive::FieldType;
 pub use hotfix_dictionary::{self as dict, TagU32};
+pub use parser::SOH;
 pub use parts::{Part, RepeatingGroup};

crates/hotfix-message/src/message.rs

@@ -131,6 +131,12 @@ pub struct Config {
     pub(crate) separator: u8,
 }
 
+impl Config {
+    pub const fn with_separator(separator: u8) -> Self {
+        Self { separator }
+    }
+}
+
 impl Default for Config {
     fn default() -> Self {
         Self { separator: SOH }

crates/hotfix-message/src/parser.rs

@@ -377,7 +377,7 @@ mod tests {
     use crate::{Part, fix44};
     use hotfix_dictionary::{Dictionary, IsFieldDefinition};
 
-    const CONFIG: Config = Config { separator: b'|' };
+    const CONFIG: Config = Config::with_separator(b'|');
 
     #[test]
     fn parse_simple_message() {