12. The non-transitory computer readable medium of claim 11 , wherein the set of instructions for the executing further comprises instructions executable by the electronic device to cause the electronic device to: generate a third string, by a third handler, based in part on the input string to second handler, if the input string to second handler matches a predetermined string of an expression specified for the second handler in the parser definition; and input the third string, by the second handler, as an input to another handler, if the input string to second handler matches a predetermined string of an expression specified for the second handler in the parser definition.
11. The non-transitory computer readable medium of claim 10 , wherein the set of instructions for the executing further comprises instructions executable by the electronic device to cause the electronic device to: communicate, by the first handler, as an input string to a second handler, the input string to the parsing pipeline, if the current input string to the parsing pipeline does not match a predetermined string of an expression specified for the first handler in the parser definition.