124 lines
5.3 KiB
C#
124 lines
5.3 KiB
C#
//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="ExpSyntaxAnalyzer.RangeAndIndex.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.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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