4.4. Error Handling#

Syntax#

(* Introduced in 0.6.0 *)
TryStatement = (* try_keyword: *) TRY_KEYWORD
               (* expression: *) Expression
               (* returns: *) ReturnsDeclaration?
               (* body: *) Block
               (* catch_clauses: *) CatchClauses;

(* Introduced in 0.6.0 *)
CatchClauses = (* item: *) CatchClause+;

(* Introduced in 0.6.0 *)
CatchClause = (* catch_keyword: *) CATCH_KEYWORD
              (* error: *) CatchClauseError?
              (* body: *) Block;

(* Introduced in 0.6.0 *)
CatchClauseError = (* name: *) IDENTIFIER?
                   (* parameters: *) ParametersDeclaration;

(* Introduced in 0.8.4 *)
RevertStatement = (* revert_keyword: *) REVERT_KEYWORD
                  (* error: *) IdentifierPath?
                  (* arguments: *) ArgumentsDeclaration
                  (* semicolon: *) SEMICOLON;

(* Deprecated in 0.5.0 *)
ThrowStatement = (* throw_keyword: *) THROW_KEYWORD
                 (* semicolon: *) SEMICOLON;

Documentation#