Expand description
Error management
Parsers are generic over their error type, requiring that it implements
the error::ParseError<Input>
trait.
Structs
- default error type, only contains the error’ location and code
- VerboseError
alloc
This error type accumulates errors and their position when backtracking through a parse tree. With some post processing (cfexamples/json.rs
), it can be used to display user friendly error messages
Enums
- Indicates which parser returned an error
- VerboseErrorKind
alloc
Error context forVerboseError
Traits
- This trait is required by the
context
combinator to add a static string to an existing error - This trait is required by the map_res combinator to integrate error types from external functions, like std::str::FromStr
- This trait must be implemented by the error type of a nom parser.
Functions
- Combines an existing error with a new one created from the input position and an ErrorKind. This is useful when backtracking through a parse tree, accumulating error context on the way
- Create a new error from an input position, a static string and an existing error. This is used mainly in the context combinator, to add user friendly information to errors when backtracking through a parse tree
- convert_error
alloc
Transforms aVerboseError
into a trace with input position information - Converts an ErrorKind to a number
- Creates an error from the input position and an ErrorKind