Github user jjmeyer0 commented on a diff in the pull request:
https://github.com/apache/metron/pull/814#discussion_r147556836
--- Diff:
metron-stellar/stellar-common/src/main/antlr4/org/apache/metron/stellar/common/generated/Stellar.g4
---
@@ -272,4 +278,30 @@ lambda_variable:
IDENTIFIER
;
+match_expr :
+ MATCH LBRACE match_clauses RBRACE #MatchClauses
+ ;
+
+match_clauses :
+ match_clause (COMMA match_clause)*
+ ;
+
+match_clause :
+ match_clause_check COLON match_clause_action
+ ;
+
+match_clause_action :
+ match_clause_action_expr #MatchClauseAction
+ ;
+match_clause_action_expr :
+ transformation_expr
+ ;
+
+match_clause_check :
--- End diff --
Is this extra expression needed? Could we get rid of it? Instead of this
just have what's below?
```
match_clause_action :
transformation_expr #MatchClauseAction
;
match_clause_check :
logical_expr #MatchClauseCheckExpr
;
```
---
