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module DeclarativePolicy
# The DSL evaluation context inside rule { ... } blocks.
# Responsible for creating and combining Rule objects.
#
# See Base.rule
class RuleDsl
def initialize(context_class)
@context_class = context_class
end
def can?(ability)
Rule::Ability.new(ability)
end
def all?(*rules)
Rule::And.make(rules)
end
def any?(*rules)
Rule::Or.make(rules)
end
def none?(*rules)
~Rule::Or.new(rules)
end
def cond(condition)
Rule::Condition.new(condition)
end
def delegate(delegate_name, condition)
Rule::DelegatedCondition.new(delegate_name, condition)
end
def method_missing(msg, *args)
return super unless args.empty? && !block_given?
if @context_class.delegations.key?(msg)
DelegateDsl.new(self, msg)
else
cond(msg.to_sym)
end
end
end
end
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