134 lines
4.7 KiB
C#
134 lines
4.7 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="ExpSwitchNode"
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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 System;
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using System.Collections.Frozen;
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using System.Collections.Generic;
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using System.Text;
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namespace StgSharp.Script.Express
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{
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public class ExpSwitchNode : ExpSyntaxNode
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{
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private ExpSyntaxNode _default;
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private ExpSyntaxNode _target;
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private FrozenDictionary<ExpSyntaxNode, ExpSyntaxNode> _cases;
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public ExpSwitchNode(
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Token source,
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ExpSyntaxNode target,
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ExpSyntaxNode defaultCase,
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params (ExpSyntaxNode label, ExpSyntaxNode op)[] cases)
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: base(source)
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{
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_target = target;
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_default = defaultCase;
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Dictionary<ExpSyntaxNode, ExpSyntaxNode> casesDic = new Dictionary<ExpSyntaxNode, ExpSyntaxNode>(
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);
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foreach ((ExpSyntaxNode label, ExpSyntaxNode op ) item in cases)
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{
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if (item.op == null)
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{
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casesDic.Add(item.label, null!);
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} else
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{
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casesDic.Add(item.label, item.op);
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}
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}
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_cases = casesDic.ToFrozenDictionary();
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string str = @"switch( {0} ){";
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StringBuilder codeFormatBuilder = new StringBuilder();
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codeFormatBuilder.AppendLine(str);
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for (int i = 0; i < casesDic.Count; i++)
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{
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int index = i * 2 + 1;
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codeFormatBuilder.AppendLine(
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$$"""
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case {{{index}}}:
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{{{index + 1}}}
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break;
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""");
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}
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CodeConvertTemplate = codeFormatBuilder.ToString();
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}
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public ExpSwitchNode(
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Token source,
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ExpSyntaxNode target,
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ExpSyntaxNode defaultCase,
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IDictionary<ExpSyntaxNode, ExpSyntaxNode> cases)
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: base(source)
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{
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_target = target;
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_default = defaultCase;
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_cases = cases.ToFrozenDictionary();
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string str = @"switch( {0} ){";
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StringBuilder codeFormatBuilder = new StringBuilder();
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codeFormatBuilder.AppendLine(str);
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for (int i = 0; i < cases.Count; i++)
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{
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int index = i * 2 + 1;
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codeFormatBuilder.AppendLine(
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$$"""
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case {{{index}}}:
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{{{index + 1}}}
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break;
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""");
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}
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CodeConvertTemplate = codeFormatBuilder.ToString();
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}
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public ExpSyntaxNode this[ExpSyntaxNode index]
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{
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get
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{
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if (_cases.TryGetValue(index, out ExpSyntaxNode? ret)) {
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return ret;
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}
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return _default;
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}
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}
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public override ExpSyntaxNode Left => Empty;
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public override ExpSyntaxNode Right => Empty;
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public override IExpElementSource EqualityTypeConvert => null!;
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public bool ContainsCase(ExpSyntaxNode token)
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{
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return _cases.ContainsKey(token);
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}
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}
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}
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