This function declares that methods with a certain name should be chained in the reversed inheritance order (the last method runs first).
dcl.chainBefore() sets the
before chaining rule for a method. It takes two parameters:
Ctr- the constructor function created by dcl().
name- the method name to be chained in
Following rules should be followed:
- It is impossible to “unchain” a chained method.
- It is impossible to change a chained method once it was set from “before” to “after” or in the opposite direction.
- Chaining should be declared only for base-less “classes”.
- It is an error to mix “classes” with different chaining rules for the same method.
- It is possible to declare chaining for a method without actually declaring the method.
The function returns
true, if it was able to define a required chaining,
false, if a constructor was not defined by dcl(), and throws an error, if a chaining conflict was detected.
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Chaining using “before” is frequently used for destructors or similar methods.
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