Class: Ua::Application

Inherits:
Object
  • Object
show all
Defined in:
lib/ua.rb

Defined Under Namespace

Modules: Apply, ArgVoid, UAClass Classes: StackFrame

Constant Summary collapse

TOPLEVEL = 
"com.ua.root"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Application

Returns a new instance of Application.



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# File 'lib/ua.rb', line 10

def initialize
   @store   = {}
   @context = {}
end

Class Method Details

.export_commands(*names) ⇒ Object 



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# File 'lib/ua.rb', line 294

def self.export_commands(*names)
  that = self
  names.each{|name|  
    (Commands).send(:define_method, name) do |*a, &b|
       that.top_app.send(name, *a, &b)
    end
  }
end

.pop ⇒ Object 



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# File 'lib/ua.rb', line 254

def self.pop
  @app_stack.pop
end

.push(app = ArgVoid, context = ArgVoid, controller = ArgVoid) ⇒ Object 



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# File 'lib/ua.rb', line 242

def self.push(app = ArgVoid, context = ArgVoid, controller = ArgVoid)
  app     = app     == ArgVoid ? @app_stack.last.app : app
  context = context == ArgVoid ? @app_stack.last.context : context
  controller = controller == ArgVoid ? @app_stack.last.controller : controller
  @app_stack.push StackFrame.new(app, context, controller)
end

.push_app(app) ⇒ Object 



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# File 'lib/ua.rb', line 249

def self.push_app(app)
   self.push(app)
end

.singleton ⇒ Object 



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# File 'lib/ua.rb', line 282

def self.singleton
   SINGLETON_APP
end

.top ⇒ Object 



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# File 'lib/ua.rb', line 257

def self.top
  @app_stack.last
end

.top_app ⇒ Object 



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# File 'lib/ua.rb', line 260

def self.top_app
  top.app
end

Instance Method Details

#_parent(a) ⇒ Object

setup an output variable



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# File 'lib/ua.rb', line 105

def _parent(a)
  u = @store
  col = ""
  arr = a.split(".") 
  arr[0..-2].each{|x|
    col << "." << x 
    if u[x] == nil
      u[x] = {}
    elsif !u[x].respond_to?(:[])
      raise "#{col} is not valid"
    end
    u = u[x] 
  }
  [u, arr[-1]]
end

#add(a = tmpid, *ar, &block) ⇒ Object 



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# File 'lib/ua.rb', line 231

def add(a = tmpid, *ar, &block)
  set a, make_uaclass(a, *ar, &block)
  get a
end

#app(name = TOPLEVEL) ⇒ Object 



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# File 'lib/ua.rb', line 137

def app(name = TOPLEVEL)
   context(get(name), :app)
end

#append(a, *b) ⇒ Object 



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# File 'lib/ua.rb', line 290

def append(a, *b)
  context(get(a), :append_add, *b)
end

#bootup ⇒ Object 



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# File 'lib/ua.rb', line 275

def bootup
  default_context
  add("com.ua.root").prototype.send :include, Ua::Application::Apply
end

#context(a, b = Ua::Application.top.context, *c, &bl) ⇒ Object 



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# File 'lib/ua.rb', line 142

def context(a, b = Ua::Application.top.context, *c, &bl)
  if block_given?
     make_context([a, b], bl)
  else
     output_by_context(a, b, *c)
  end
end

#create(id, opt = {}, &b) ⇒ Object 



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# File 'lib/ua.rb', line 225

def create(id, opt = {}, &b)
  x = get(id).prototype.new
  opt.each{|k, v| x.send "#{k}=", v }
  x         
end

#default_context ⇒ Object 



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# File 'lib/ua.rb', line 15

def default_context
    that = self
    context Array, :app do |arr|
       arr.map{|a| context(a, :app)}.join
    end
 
   context Apply, :app do |arr|
      get(arr.stream_).map{|a|that.app a}.join
   end
   
   context String, :app do |str|
      str
   end
   
   context UAClass, :app do |element|
     element.render
   end
   
   context Array, :stream_add do |arr, *a|
     arr.concat a
     ""
   end
   context String, :get do |obj, *a|
      context(get(obj), *a)
   end
   
   context UAClass, :stream_add do |obj, *a|
     obj.stream_ ||= stream_generate
     get(obj.stream_).concat a
     obj.extend Apply
     ""
   end
   
   context UAClass, :append_add do |obj, *a|
     obj.stream_ ||= stream_generate
     get(obj.stream_).concat a
     ""
   end
end

#delete(obj) ⇒ Object 



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# File 'lib/ua.rb', line 236

def delete(obj)
  set obj.id_, nil
end

#get(a) ⇒ Object 



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# File 'lib/ua.rb', line 127

def get(a)
  path, val = _parent(a)
  path[val] 
end

#get_local(name) ⇒ Object 



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# File 'lib/ua.rb', line 318

def get_local(name)
  local = "local.#{name}"
  return get local if has?(local)  
  add local
  get local
end

#go!(name = TOPLEVEL) ⇒ Object 



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# File 'lib/ua.rb', line 133

def go!(name = TOPLEVEL)
   puts app(name)
end

#has?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ua.rb', line 303

def has?(key)
  get(key)
end

#make_context(a, b) ⇒ Object 



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# File 'lib/ua.rb', line 55

def make_context(a, b)
   a[0] = get(a[0]).class if String === a[0] && has?(a[0])
   a[0] = a[0].class unless Module === a[0]
   @context[a] = b
end

#make_uaclass(a, *ar, &block) ⇒ Object 



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# File 'lib/ua.rb', line 152

def make_uaclass(a, *ar, &block)
  autoinit = false
  block ||= begin
     autoinit = true
     lambda{
        "<%= context(get(stream_), :app) %>"
     }
  end
  that = self
  code = block.call
  codename = "proc.#{a}"
  set codename, code
  klass = Class.new(OpenStruct) do
    include UAClass
    include Enumerable
    define_method(:initialize) do |*args|
    begin
        Ua::Application.push_app that
        super(*args)
        self.stream_ = that.stream_generate
        self.id_     = that.tmpid("object")
        that.set self.id_, self
    ensure
        Ua::Application.pop
    end
    end
    def mapjoin
      map{|x| yield x}.join
    end
    def each
      get(stream_).each{|x|
        yield x
      }
    end
    define_method(:classid) do
      a
    end
    define_method(:prototype) do
      klass
    end
    define_method(:erb) do |text__|
    begin
      Ua::Application.push_app that  
      ERB.new(text__).result(binding)
    ensure
      Ua::Application.pop
    end
    end
    define_method(:render) do
    begin  
      Ua::Application.push_app that          
      erb get codename
    ensure
      Ua::Application.pop
    end
    end
    define_singleton_method(:to_s) do
      a
    end
  end 
  x = klass.new
  klass.const_set :Singleton_, x
  x
end

#output_by_context(a, b, *c) ⇒ Object 



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# File 'lib/ua.rb', line 68

def output_by_context(a, b, *c)
   r = a.singleton_class rescue a.class
   r.ancestors.each{|i|
      h = i.instance_method(:uacontext) rescue nil
      catch(:continue){
        return h.bind(a).call(b, *c) if h
      }
   }
   r.ancestors.each{|i|
      h = @context[[i, b]]            
      catch(:continue){
        return a.instance_exec(a, *c, &h) if h
      }
   }
   puts "Can't find a handler #{a.class} #{b}"
   raise "Can't find a handler #{a.class} #{b}"
=begin
ensure

  if $@
    unless [email protected]{|x| x=="UAException"}
      [email protected]("UAEnd")
      [email protected]("UAException")
    end
    l, r = [email protected]("UAException"), [email protected]("UAEnd")
    u = [email protected]!(l..r)
    u[-1, 0] = "context #{a.class} #{b}"
    u += $@
    [email protected] u
  end
=end
end

#pop_local(name) ⇒ Object 



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# File 'lib/ua.rb', line 338

def pop_local(name)
  local = "local.#{name}"
  r = get local
  set local, stack_of(local).pop
  r
end

#push_local(name, newval = add) ⇒ Object 



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# File 'lib/ua.rb', line 331

def push_local(name, newval = add)
  local = "local.#{name}"
  stack_of(local).push get local
  set local, newval
  newval
end

#set(a, b) ⇒ Object 



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# File 'lib/ua.rb', line 121

def set(a, b)
   path, val = _parent(a)
   path[val] = b
   b
end

#set_local(name, val) ⇒ Object 



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# File 'lib/ua.rb', line 325

def set_local(name, val)
  local = "local.#{name}"
  set local, val
  val
end

#stack_of(name) ⇒ Object 



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# File 'lib/ua.rb', line 307

def stack_of(name)
   stack = "stack.#{name}"
   if has?(stack)
     get(stack)
   else
     set stack, (a = [])
     a
   end
end

#stream(a, *b) ⇒ Object 



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# File 'lib/ua.rb', line 286

def stream(a, *b)
  context(get(a), :stream_add, *b)
end

#stream_generate ⇒ Object 



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# File 'lib/ua.rb', line 219

def stream_generate
  u = tmpid
  set u, []
  u
end

#tmpid(prefix = "temp") ⇒ Object 



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# File 'lib/ua.rb', line 61

def tmpid(prefix = "temp")
   r = get(count = "#{prefix}.id") || 0
   r += 1
   set count, r
   "#{prefix}.#{r}"
end