// Copyright (c) 2017 Ernest Micklei
// 
// MIT License
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package proto

type collector struct {
	proto *Proto
}

func collect(p *Proto) collector {
	return collector{p}
}

func (c collector) Comments() (list []*Comment) {
	for _, each := range c.proto.Elements {
		if c, ok := each.(*Comment); ok {
			list = append(list, c)
		}
	}
	return
}

func (c collector) Enums() (list []*Enum) {
	for _, each := range c.proto.Elements {
		if c, ok := each.(*Enum); ok {
			list = append(list, c)
		}
	}
	return
}

func (c collector) Messages() (list []*Message) {
	for _, each := range c.proto.Elements {
		if c, ok := each.(*Message); ok {
			list = append(list, c)
		}
	}
	return
}

func (c collector) Services() (list []*Service) {
	for _, each := range c.proto.Elements {
		if c, ok := each.(*Service); ok {
			list = append(list, c)
		}
	}
	return
}