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Zero/ZeroLevel/Services/DOM/DSL/Contexts/TBlockContext.cs

129 lines
4.8 KiB

6 years ago
using DOM.DSL.Model;
using DOM.DSL.Services;
using DOM.DSL.Tokens;
using System;
using System.Collections.Generic;
namespace DOM.DSL.Contexts
{
internal class TBlockContext :
TContext
{
private readonly string _name;
private TToken _blockToken;
private List<TToken> _tokens;
public string Name { get { return _name; } }
public TBlockContext(TContext parent, string name)
{
ParentContext = parent;
_name = name;
_tokens = new List<TToken>();
}
public override void Read(TStringReader reader)
{
if (_name.Equals("if", StringComparison.OrdinalIgnoreCase) ||
_name.Equals("for", StringComparison.OrdinalIgnoreCase))
{
var spaces_count = reader.SkipSpaces();
if (reader.Current.Equals(TChar.TokenStart))
{
reader.Move();
var name = reader.ReadIdentity();
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if (name.Equals($"end{_name}"))
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{
reader.Move(name.Length);
return;
}
if (_elementNames.Contains(name))
{
reader.Move(name.Length);
var elementContext = new TElementContext(this, name);
elementContext.Read(reader);
_blockToken = elementContext.Complete();
var body = new TRootContext(this);
body.Read(reader);
_tokens.AddRange(body.Complete());
}
else
{
_tokens.Add(new TTextToken { Text = "@" + _name + " @" + name });
}
}
else
{
_tokens.Add(new TTextToken { Text = "@" + _name + new string(' ', spaces_count) });
}
}
else if (_name.Equals("block", StringComparison.OrdinalIgnoreCase))
{
/*----------------------------------------------------------------*/
if (reader.Current.Equals(TChar.PropertyOrFuncStart))
{
reader.Move();
var name = reader.ReadIdentity();
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if (name.Equals($"end{_name}"))
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{
reader.Move(name.Length);
return;
}
if (name.Equals("to", StringComparison.OrdinalIgnoreCase))
{
reader.Move(name.Length);
if (reader.Current.Equals(TChar.FuncArgsStart))
{
reader.Move();
reader.SkipSpaces();
var var_name = reader.ReadIdentity();
if (string.IsNullOrWhiteSpace(var_name))
{
return;
}
reader.Move(var_name.Length);
reader.SkipSpaces();
if (reader.Current.Equals(TChar.FuncArgsEnd))
{
reader.Move();
reader.SkipSpaces();
reader.SkipBreaks();
_blockToken = new TTextToken { Text = var_name };
var body = new TRootContext(this);
body.Read(reader);
_tokens.AddRange(body.Complete());
}
}
}
}
/*----------------------------------------------------------------*/
}
else if (_name.Equals("comm", StringComparison.OrdinalIgnoreCase))
{
do
{
var offset = reader.FindOffsetTo(TChar.TokenStart);
if (offset == -1) return;
reader.Move(offset + 1);
var name = reader.ReadIdentity();
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if (name.Equals($"end{_name}"))
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{
reader.Move(name.Length);
return;
}
} while (reader.EOF == false);
}
else
{
var body = new TRootContext(this);
body.Read(reader);
_tokens.AddRange(body.Complete());
}
}
public TToken Complete()
{
return new TBlockToken(_name, _blockToken, _tokens);
}
}
}

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