class Alki::Dsl::Evaluator
Public Class Methods
evaluate(dsl, data={}, &blk)
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# File lib/alki/dsl/evaluator.rb, line 8 def self.evaluate(dsl, data={}, &blk) evaluator = new(dsl,data) evaluator.evaluate &blk evaluator.finish end
new(dsl,data)
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# File lib/alki/dsl/evaluator.rb, line 14 def initialize(dsl,data) @inits = [] @finishers = [] @processors = [] @dsls_seen = Set.new @data = data @mod = (data[:module] ||= Module.new) @dsl = dsl evaluator = self define_dsl_method :method_missing do |meth,*args,&b| evaluator.context.send meth, *args, &b end process_dsl @dsl end
Public Instance Methods
build(data={},&blk)
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# File lib/alki/dsl/evaluator.rb, line 29 def build(data={},&blk) self.class.evaluate(@dsl,data,&blk) end
context()
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# File lib/alki/dsl/evaluator.rb, line 38 def context @context end
define_dsl_method(name,&blk)
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# File lib/alki/dsl/evaluator.rb, line 76 def define_dsl_method(name,&blk) @mod.define_singleton_method name, &blk end
evaluate(&blk)
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# File lib/alki/dsl/evaluator.rb, line 42 def evaluate(&blk) @context = @data[:context] || block_context(blk) @mod.class_exec &blk end
finish()
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# File lib/alki/dsl/evaluator.rb, line 80 def finish @finishers.reverse_each(&:call) clear_dsl_methods if @data.key? :result @data[:result] else @data end end
process_dsl(dsl)
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# File lib/alki/dsl/evaluator.rb, line 33 def process_dsl(dsl) return unless @dsls_seen.add? dsl dsl.generate(self,@data) end
require_dsl(source,dsl)
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# File lib/alki/dsl/evaluator.rb, line 47 def require_dsl(source,dsl) dsl_class = Alki.load(dsl) dsl_class.new(EvaluatorInstance.new(self,@data)) end
update(cbs)
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# File lib/alki/dsl/evaluator.rb, line 52 def update(cbs) after_requires = [] if cbs[:requires] cbs[:requires].each do |(required_dsl,order)| case order when :before process_dsl Alki.load(required_dsl) when :after after_requires << [Alki.load(required_dsl)] end end end cbs[:init].call if cbs[:init] @finishers << cbs[:finish] if cbs[:finish] if cbs[:methods] cbs[:methods].each do |name, proc| define_dsl_method name, &proc end end after_requires.each do |process_args| process_dsl *process_args end end
Private Instance Methods
block_context(blk)
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# File lib/alki/dsl/evaluator.rb, line 99 def block_context(blk) b = blk.binding if b.respond_to? :receiver b.receiver else b.eval('self') end end
clear_dsl_methods()
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# File lib/alki/dsl/evaluator.rb, line 93 def clear_dsl_methods @mod.singleton_methods do |m| @mod.singleton_class.send :remove_method, m end end