66 lines
1.9 KiB
C#
66 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Upsilon.BaseTypes.Number;
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using Upsilon.BaseTypes.ScriptTypeInterfaces;
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using Upsilon.Binder.VariableSymbols;
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using Upsilon.Evaluator;
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using Upsilon.Text;
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namespace Upsilon.BaseTypes.ScriptTable
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{
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public abstract class ScriptTable : ScriptType, IIndexable, IScopeOwner, IIterable, ILengthType
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{
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public EvaluationScope EvaluationScope { get; }
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public ScriptTable(EvaluationScope scope)
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{
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EvaluationScope = scope;
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}
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public override TypeContainer Type => BaseTypes.Type.Table;
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public ScriptType Get(Diagnostics diagnostics, TextSpan span, ScriptType index, EvaluationScope scope)
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{
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var s = index.ToString();
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if (EvaluationScope.TryGet(s, out var o))
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{
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return o;
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}
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return new ScriptNull();
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}
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public void Set(Diagnostics diagnostics, TextSpan span, ScriptType index, ScriptType value)
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{
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var s = index.ToString();
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if (value.Type == BaseTypes.Type.Nil)
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{
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EvaluationScope.Delete(s);
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return;
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}
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EvaluationScope.CreateLocal(new VariableSymbol(s, value.Type, false), value);
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}
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public ScriptType GetValueFromIndex(ScriptType index)
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{
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if (EvaluationScope.TryGet(index.ToString(), out var result))
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{
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return result;
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}
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return new ScriptNull();
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}
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public abstract IEnumerator<ScriptType> GetScriptEnumerator();
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public abstract bool Contains(ScriptType obj);
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public void Delete(ScriptType key)
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{
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EvaluationScope.Delete(key.ToString());
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}
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public ScriptNumberLong Length()
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{
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return new ScriptNumberLong(EvaluationScope.Variables.Count);
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}
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}
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} |