154 lines
5.2 KiB
C#
154 lines
5.2 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="ExpNodeGenerator.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 StgSharp.Threading;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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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 partial class ExpNodeGenerator
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{
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private const int EndLine = 1;
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private const int TokenGenerated = 0;
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private const int TokenTypeNotMatch = -1;
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private ExpNode _lastStatement;
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private GeneratedExpSchema _context;
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private IExpElementSource _local;
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private List<ExpNode> _cache;
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private Stack<ExpNode> _operandsNode;
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private Stack<Token> _operandsToken;
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private Stack<Token> _operators;
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public ExpNodeGenerator()
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{
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_operators = new Stack<Token>();
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_operandsToken = new Stack<Token>();
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}
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/// <summary>
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/// Append a token to top of cache. This method will automatically convert token to node if
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/// meets separators or operators.
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/// </summary>
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/// <param name="expToken"></param>
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public void AppendToken( Token expToken )
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{
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switch( expToken.Flag ) {
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case TokenFlag.Symbol_Unary or TokenFlag.Symbol_Binary:
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_operandsToken.Push( expToken );
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break;
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case TokenFlag.Number or TokenFlag.String or TokenFlag.Member:
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break;
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case TokenFlag.Separator_Single:
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break;
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case TokenFlag.Separator_Left:
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break;
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case TokenFlag.Separator_Right:
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break;
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case TokenFlag.Index_Left:
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break;
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case TokenFlag.Index_Right:
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break;
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default:
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break;
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}
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}
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public void CacheNextOperandNode( ExpNode node )
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{
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_operandsNode.Push( node );
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}
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public AbstractSyntaxTree<ExpNode, IExpElementSource> CloseAndDispose()
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{
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if( _operandsToken.Count != 0 ) {
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// convert rest to AST
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}
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return new AbstractSyntaxTree<ExpNode, IExpElementSource>();
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}
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/*
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public ExpNode GenerateNode( Token t )
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{
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switch( t.Flag ) {
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case TokenFlag.Symbol_Unary:
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break;
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case TokenFlag.Symbol_Binary:
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break;
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case TokenFlag.Number:
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break;
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case TokenFlag.String:
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break;
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case TokenFlag.Member:
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break;
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case TokenFlag.Separator_Single:
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break;
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case TokenFlag.Separator_Left:
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break;
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case TokenFlag.Separator_Right:
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break;
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case TokenFlag.Index_Left:
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break;
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case TokenFlag.Index_Right:
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break;
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default:
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break;
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}
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}
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/**/
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public int GetNextOperandCache( out Token? token, out ExpNode? node )
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{
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if( _operandsNode.Count != 0 ) {
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node = _operandsNode.Pop();
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token = null!;
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return 2;
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}
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if( _operandsToken.Count != 0 ) {
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token = _operandsToken.Pop();
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node = null!;
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return 1;
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}
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token = null;
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node = null!;
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return 0;
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}
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}
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}
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