141 lines
4.6 KiB
C#
141 lines
4.6 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="ExpNodeNextEnumerator.cs"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the “Software”), to deal in the Software without restriction,
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// including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software,
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// and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and
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// this permission notice shall be included in all copies
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// or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED “AS IS”,
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// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH
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// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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using Microsoft.CodeAnalysis.CSharp.Syntax;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.Script.Express
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{
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public static class ExpNodeNextEnumeratorExtensions
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{
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public static ExpNodeNextEnumerator AsCollectionEnumerator( this ExpSyntaxNode token )
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{
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ExpNodeNextEnumerator enumerator = new ExpNodeNextEnumerator( token );
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IExpElementSource type = token.EqualityTypeConvert;
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while( enumerator.MoveNext() )
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{
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if( enumerator. Current != type ) {
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throw new InvalidCastException();
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}
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}
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return enumerator;
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}
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[MethodImpl( MethodImplOptions.AggressiveInlining )]
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public static ExpNodeNextEnumerator ToEnumerator( this ExpSyntaxNode token )
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{
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return new ExpNodeNextEnumerator( token );
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}
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}
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public class ExpNodeNextEnumerator : IEnumerator<ExpSyntaxNode>
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{
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private ExpSyntaxNode _current;
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private List<ExpSyntaxNode> _begin = new List<ExpSyntaxNode>();
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public ExpNodeNextEnumerator( ExpSyntaxNode token )
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{
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_begin[ 0 ] = token;
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_current = token;
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ExpSyntaxNode t = token;
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while( !ReferenceEquals( t.Next, token ) && t.Next != null )
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{
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t = t.Next;
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_begin.Add( t );
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}
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}
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public ExpSyntaxNode this[ int index ]
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{
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get
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{
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ArgumentOutOfRangeException.ThrowIfNegative( index );
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ArgumentOutOfRangeException.ThrowIfGreaterThan( index, _begin.Count );
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return _begin[ index ];
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}
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}
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public ExpSyntaxNode Current => _current;
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public List<ExpSyntaxNode> Values => _begin;
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public void AssertEnumeratorCount( int count )
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{
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if( _begin.Count != count ) {
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throw new InvalidOperationException(
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$"Enumerator count mismatch. Expected {count}, but got {_begin.Count}." );
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}
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}
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public void AssertEnumeratorCount( int min, int max )
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{
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if( _begin.Count < min || _begin.Count > max ) {
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throw new InvalidOperationException(
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$"Enumerator count mismatch. Expected between {min} and {max}, but got {_begin.Count}." );
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}
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}
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public bool MoveNext()
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{
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ExpSyntaxNode next = _current.Next;
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if( ReferenceEquals( next, _begin ) || next == null ) {
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return false;
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}
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_current = next;
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return true;
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}
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void IDisposable.Dispose()
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{
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return;
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}
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void IEnumerator.Reset()
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{
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_current = _begin[ 0 ];
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}
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object IEnumerator.Current => _current;
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}
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}
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