121 lines
5.2 KiB
C#
121 lines
5.2 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="ExpSyntaxAnalyzer.RangeAndIndex"
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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 Microsoft.CodeAnalysis.Operations;
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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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using ExpKeyword = StgSharp.Script.Express.ExpressCompile.Keyword;
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namespace StgSharp.Script.Express
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{
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public partial class ExpSyntaxAnalyzer
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{
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private void AppendToken_RangeAndIndex(Token t)
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{
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ExpSyntaxNode root;
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switch (t.Value)
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{
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case "[":
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RangeAndIndexState state = new RangeAndIndexState();
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state.CurrentState = t.Value;
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_cache.CurrentDepthMark.StateCache = state;
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break;
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case "]":
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state = _cache.StateOfCurrentDepth<RangeAndIndexState>();
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// Generate range or index object
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if (_cache.StatementsInDepth.Count != 0)
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{
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throw new ExpInvalidSyntaxException(
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"Range and index syntax error: expected one statement to define range beginning.");
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}
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ReverseAnalyzeStatement();
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root = _cache.StatementsInDepth.Pop();
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if (ExpNodeFlag.BuiltinType_Int.IsNotInFlag(root.NodeFlag)) {
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throw new ExpInvalidTypeException(
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root, "integer", root.EqualityTypeConvert?.Name ?? string.Empty);
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}
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if (state.CurrentState == "[") { } else { }
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break;
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case ":":
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state = _cache.StateOfCurrentDepth<RangeAndIndexState>();
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if (state.CurrentState != "[") {
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throw new ExpInvalidSyntaxException(
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"Range and index syntax error: wrong position of :");
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}
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if (_cache.StatementsInDepth.Count != 0) {
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throw new ExpInvalidSyntaxException(
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"Range and index syntax error: expected one statement to define range beginning.");
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}
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ReverseAnalyzeStatement();
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root = _cache.StatementsInDepth.Pop();
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if (ExpNodeFlag.BuiltinType_Int.IsNotInFlag(root.NodeFlag)) {
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throw new ExpInvalidTypeException(
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root, "integer", root.EqualityTypeConvert?.Name ?? string.Empty);
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}
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state.RangeStart = root;
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break;
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default:
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state = _cache.StateOfCurrentDepth<RangeAndIndexState>();
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if (t.Value == "?")
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{
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switch (state.CurrentState)
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{
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case ":":
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_cache.PushOperand(new ExpIntNode(t, int.MaxValue, true));
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break;
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case "[":
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_cache.PushOperand(new ExpIntNode(t, int.MaxValue, true));
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break;
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default:
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throw new ExpInvalidSyntaxException(
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"Range and index syntax error: \"?\" can only be used in range or index");
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}
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}
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AppendToken_Common(t);
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break;
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}
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}
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private class RangeAndIndexState : ICompileDepthState
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{
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public ExpSyntaxNode RangeStart { get; set; }
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public string CurrentState { get; set; } = string.Empty;
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}
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}
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}
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