ConditionalEmitter

class sconstool.util.ConditionalEmitter(predicate, emitter_if=None, emitter_else=None)

A callable object, which calls user-provided emitter when a predefined condition is meet.

Parameters:

• predicate – a callable object (function) of type pred(target, source, env); the function should return a boolean value; if pred() returns true, the ConditionalEmitter` will dispatch control to emitter_if, otherwise it will call emitter_else,
• emitter_if – an emitter function of the form emitter(target, source, env) which gets called when pred() returns True,
• emitter_else – an emitter function of the form emitter(target, source, env) which gets called when pred() returns False,

__call__(target, source, env)

Call self as a function.

default_emitter(target, source, env)

Default emitter, just returns the tuple (target, source).

emitter_else

The value of emitter_else parameter passed in to the constructor at object creation, or default_emitter if emitter_else was omitted.

emitter_if

The value of emitter_if parameter passed in to the constructor at object creation, or default_emitter if emitter_if was omitted.

predicate

The value of predicate parameter passed in to the constructor at object creation