tfbparser

Documentation

Index

• Variables
• type ParseError
  • func ParseString(name string, input string) ([]iec61499.FB, *ParseError)
  • func (p ParseError) Error() string

Variables

var (
	//ErrInternal means something went wrong and it's the transpiler's fault
	ErrInternal = errors.New("An internal error occured")

	//ErrUnexpectedEOF means the document ended unexpectedly
	ErrUnexpectedEOF = errors.New("Unexpected EOF")

	//ErrUnexpectedValue is used to indicate a parsed value was not what was expected (i.e. a word instead of a semicolon)
	ErrUnexpectedValue = errors.New("Unexpected value")

	//ErrUndefinedFB is used to indicate a FB was referenced that can't be found (so probably a typo has occured)
	ErrUndefinedFB = errors.New("Can't find FB with name")

	//ErrUndefinedEvent is used to indicate that an event was referenced that can't be found (so probably a typo has occured)
	ErrUndefinedEvent = errors.New("Can't find Event with name")

	//ErrUnexpectedAssociation is used when an association statement ("with") is used on a data line in an interface inappropriately (i.e. in a compositeFB, or trying to trigger an event)
	ErrUnexpectedAssociation = errors.New("Unexpected association")

	//ErrInvalidType is used when the type of an event or data variable is bad
	ErrInvalidType = errors.New("Invalid or missing data/event type")

	//ErrInvalidIOMeta is used when metadata for an I/O line is bad
	ErrInvalidIOMeta = errors.New("Invalid metadata for data/event line")

	//ErrNameAlreadyInUse is returned whenever something is named but the name is already in use elsewhere
	ErrNameAlreadyInUse = errors.New("This name is already defined elsewhere")

	//ErrOnlyInstancesGetParameters is returned when a constant parameter is attempt-assigned to a cfb output
	ErrOnlyInstancesGetParameters = errors.New("Constant parameters can only be provided to fb instances")
)

Types

type ParseError

type ParseError struct {
	LineNumber int
	Argument   string
	Reason     string
	Err        error
}

ParseError is used to contain a helpful error message when parsing fails

func ParseString

func ParseString(name string, input string) ([]iec61499.FB, *ParseError)

ParseString takes an input string (i.e. filename) and input and returns all FBs in that string

func (ParseError) Error

func (p ParseError) Error() string

Error makes ParseError fulfill error interface