19 lines
721 B
Go
19 lines
721 B
Go
package parsekit
|
|
|
|
// Expects is used to let a StateHandler function describe what input it is expecting.
|
|
// This expectation is used in error messages to make them more descriptive.
|
|
//
|
|
// When defining an expectation inside a StateHandler, you do not need to
|
|
// handle unexpected input yourself. When the end of the function is reached
|
|
// without setting the next state, an automatic error will be emitted.
|
|
// This error can differentiate between the following issues:
|
|
//
|
|
// 1) there is valid data on input, but it was not accepted by the function
|
|
//
|
|
// 2) there is an invalid UTF8 character on input
|
|
//
|
|
// 3) the end of the file was reached.
|
|
func (p *ParseAPI) Expects(description string) {
|
|
p.expecting = description
|
|
}
|