FBP DSL

FBP Domain Specific Language

The current language used to describe graphs textually is an implementation of Stevenson's DSL, and it looks like this:

Declaring a process: ProcessName(packageName/ComponentName)

Comments are marked with a #.

Example: # This is a comment ReadLog(filesystem/ReadText)

Connecting an output to an input:

ReadLog(filesystem/ReadText) OUT -> IN WriteLog(filesystem/WriteText)

This means that the port 'OUT' of ReadLog is going to be connected to the port 'IN' of WriteLog. Connections can be chained together too. Subsequent uses of a process do not require specifying the package and component name again.

Array ports: Splitter(core/Split) OUT [1] -> IN [0] WriteLog(filesystem/WriteText)

Brackets with an integer next to a port name denote its index for the connection. The javascript implementation of the parser assumes order of declaration as the index automatically, but this is not a characteristic of the DSL.