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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System;
using System.Collections.Immutable;
using System.Diagnostics;
using System.Linq;
using Microsoft.CodeAnalysis.CSharp.Symbols;
using Microsoft.CodeAnalysis.PooledObjects;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.CSharp
{
internal static class SymbolInfoFactory
{
internal static SymbolInfo Create(ImmutableArray<Symbol> symbols, LookupResultKind resultKind, bool isDynamic)
=> Create(OneOrMany.Create(symbols.NullToEmpty()), resultKind, isDynamic);
internal static SymbolInfo Create(OneOrMany<Symbol> symbols, LookupResultKind resultKind, bool isDynamic)
{
if (isDynamic)
{
if (symbols.Count == 1)
{
return new SymbolInfo(symbols[0].GetPublicSymbol(), CandidateReason.LateBound);
}
else
{
return new SymbolInfo(getPublicSymbols(symbols), CandidateReason.LateBound);
}
}
else if (resultKind == LookupResultKind.Viable)
{
if (symbols.Count > 0)
{
Debug.Assert(symbols.Count == 1);
return new SymbolInfo(symbols[0].GetPublicSymbol());
}
else
{
return SymbolInfo.None;
}
}
else
{
return new SymbolInfo(getPublicSymbols(symbols), (symbols.Count > 0) ? resultKind.ToCandidateReason() : CandidateReason.None);
}
static ImmutableArray<ISymbol> getPublicSymbols(OneOrMany<Symbol> symbols)
{
var result = ArrayBuilder<ISymbol>.GetInstance(symbols.Count);
foreach (var symbol in symbols)
result.Add(symbol.GetPublicSymbol());
return result.ToImmutableAndFree();
}
}
}
}
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