// 
// T4ParsedDocument.cs
//  
// Author:
//       Michael Hutchinson <mhutchinson@novell.com>
// 
// Copyright (c) 2009 Novell, Inc. (http://www.novell.com)
// 
// 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.

using System;
using System.Collections.Generic;
using MonoDevelop.Projects.Dom;
using MonoDevelop.Projects.Dom.Parser;
using Mono.TextTemplating;

namespace MonoDevelop.TextTemplating.Parser
{
	
	
	public class T4ParsedDocument : ParsedDocument
	{
		
		public T4ParsedDocument (string fileName, List<ISegment> segments) : base (fileName)
		{
			TemplateSegments = segments;
		}
		
		public List<ISegment> TemplateSegments { get; private set; }
		
		public IEnumerable<Directive> TemplateDirectives {
			get {
				foreach (ISegment seg in TemplateSegments) {
					Directive dir = seg as Directive;
					if (dir != null)
						yield return dir;
				}
			}
		}
		
		public IEnumerable<TemplateSegment> TemplateContent {
			get {
				foreach (ISegment seg in TemplateSegments) {
					TemplateSegment ts = seg as TemplateSegment;
					if (ts != null)
						yield return ts;
				}
			}
		}
		
		public override IEnumerable<FoldingRegion> GenerateFolds ()
		{
			foreach (ISegment seg in TemplateSegments) {
				if (seg.EndLocation.Line - seg.TagStartLocation.Line < 1)
					continue;
				
				string name;
				TemplateSegment ts = seg as TemplateSegment;
				if (ts != null) {
					if (ts.Type == SegmentType.Content) {
						continue;
					} else if (ts.Type == SegmentType.Expression) {
						name = "<#=...#>";
					} else if (ts.Type == SegmentType.Helper) {
						name = "<#+...#>";
					} else {
						name = "<#...#>";
					}
				} else {
					Directive dir = (Directive)seg;
					name = "<#@" + dir.Name + "...#>";
				}
				
				DomRegion region = new DomRegion (seg.TagStartLocation.Line, seg.TagStartLocation.Column,
			                                      seg.EndLocation.Line, seg.EndLocation.Column);
				
				yield return new FoldingRegion (name, region, false);
			}
		}
	}
}
