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Stored size: 746 Bytes
Contents
module Dryml
class ScopedVariables
def initialize(variables=nil)
@scopes = variables ? [variables] : []
end
def [](key)
s = scope_with_key(key) and s[key]
end
def []=(key, val)
s = scope_with_key(key) or raise ArgumentError, "no such scoped variable: #{key}"
s[key] = val
end
def new_scope(variables)
@scopes << variables.dup
res = yield
@scopes.pop
res
end
def scope_with_key(key)
@scopes.reverse_each do |s|
return s if s.has_key?(key)
end
nil
end
def method_missing(name, *args)
if name.to_s =~ /=$/
self[name.to_s[0..-2].to_sym] = args.first
else
self[name]
end
end
end
end
Version data entries
67 entries across 67 versions & 1 rubygems