66 lines
2.6 KiB
C#
66 lines
2.6 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="ExpSyntaxAnalyzer.Enum"
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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 obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using StgSharp.Script;
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using StgSharp.Script.Express;
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using System;
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using System.Collections.Generic;
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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.Model.Step
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{
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internal partial class StepExpSyntaxAnalyzer
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{
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private static string ParseStepEnumLiteral(string source)
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{
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int length = source.Length;
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ReadOnlySpan<char> span = source.AsSpan();
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if (length > 2 && span[0] == '.' && span[length - 1] == '.') {
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return span.Slice(1, length - 2).ToString();
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}
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throw new ExpInvalidSyntaxException($"\"{source}\" is not a valid enum syntax");
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}
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private void TryAppendEnum(Token e)
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{
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ExpSyntaxNode node = e.Value switch
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{
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".T." => new ExpBoolNode(e, true, true),
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".F." => new ExpBoolNode(e, false, true),
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".U." => new ExpLogicValueNode(e, ExpLogic.Unknown, true),
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_ => ExpEnumLiteralNode.Create(e, ParseStepEnumLiteral),
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};
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_cache.PushOperand(node);
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}
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}
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}
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