This rule represents the invocation of a method on the ‘parent’ (a stack element below the topmost element) on the ‘child’ (the topmost stack element).

Methods
Public Class methods
new( parms )

Create a new invoke-parent rule. Allowed parameters are ‘method’ (which names the method of the parent to call), and ‘depth’ (which defaults to 1 and identifies how deep into the stack to dig to find the parent).

[ show source ]

     # File lib/copland/rule-engine.rb, line 145
145:     def initialize( parms )
146:       @method_name = parms['method']
147:       @depth = ( parms['depth'] || 1 ).to_i
148:     end
Public Instance methods
begin( processor, name, content )

invokes the requested method on the parent, passing the child as the only parameter.

[ show source ]

     # File lib/copland/rule-engine.rb, line 151
151:     def begin( processor, name, content )
152:       parent = processor.stack[ -(@depth+1) ]
153:       child = processor.stack.last
154: 
155:       parent.__send__( @method_name, child )
156:     end