Add "sym" and "def" instructions, add argument naming

crsn_screen/src/lib.rs

@@ -24,7 +24,7 @@ impl CrsnExtension for ScreenOps {
         "screen"
     }
 
-    fn parse_op(&self, keyword: &str, args: TokenParser) -> Result<ParseRes<Op>, CrsnError> {
+    fn parse_op<'a>(&self, keyword: &str, args: TokenParser<'a>) -> Result<ParseRes<'a, Op>, CrsnError> {
         parse::parse(keyword, args)
     }
 }

crsn_screen/src/parse.rs

@@ -6,7 +6,7 @@ use crsn::module::ParseRes;
 
 use crate::defs::ScreenOp;
 
-pub(crate) fn parse(keyword: &str, mut args: TokenParser) -> Result<ParseRes<Op>, CrsnError> {
+pub(crate) fn parse<'a>(keyword: &str, mut args: TokenParser<'a>) -> Result<ParseRes<'a, Op>, CrsnError> {
     Ok(ParseRes::ext(match keyword {
         "sc-init" => {
             ScreenOp::ScreenInit {