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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.
using System;
using Microsoft.CodeAnalysis;
namespace Microsoft.AspNetCore.Components.Analyzers;
internal sealed class ComponentSymbols
{
public static bool TryCreate(Compilation compilation, out ComponentSymbols symbols)
{
if (compilation == null)
{
throw new ArgumentNullException(nameof(compilation));
}
var parameterAttribute = compilation.GetTypeByMetadataName(ComponentsApi.ParameterAttribute.MetadataName);
if (parameterAttribute == null)
{
symbols = null;
return false;
}
var cascadingParameterAttribute = compilation.GetTypeByMetadataName(ComponentsApi.CascadingParameterAttribute.MetadataName);
if (cascadingParameterAttribute == null)
{
symbols = null;
return false;
}
var icomponentType = compilation.GetTypeByMetadataName(ComponentsApi.IComponent.MetadataName);
if (icomponentType == null)
{
symbols = null;
return false;
}
var dictionary = compilation.GetTypeByMetadataName("System.Collections.Generic.Dictionary`2");
var @string = compilation.GetSpecialType(SpecialType.System_String);
var @object = compilation.GetSpecialType(SpecialType.System_Object);
if (dictionary == null || @string == null || @object == null)
{
symbols = null;
return false;
}
var parameterCaptureUnmatchedValuesRuntimeType = dictionary.Construct(@string, @object);
symbols = new ComponentSymbols(
parameterAttribute,
cascadingParameterAttribute,
parameterCaptureUnmatchedValuesRuntimeType,
icomponentType);
return true;
}
private ComponentSymbols(
INamedTypeSymbol parameterAttribute,
INamedTypeSymbol cascadingParameterAttribute,
INamedTypeSymbol parameterCaptureUnmatchedValuesRuntimeType,
INamedTypeSymbol icomponentType)
{
ParameterAttribute = parameterAttribute;
CascadingParameterAttribute = cascadingParameterAttribute;
ParameterCaptureUnmatchedValuesRuntimeType = parameterCaptureUnmatchedValuesRuntimeType;
IComponentType = icomponentType;
}
public INamedTypeSymbol ParameterAttribute { get; }
public INamedTypeSymbol ParameterCaptureUnmatchedValuesRuntimeType { get; }
public INamedTypeSymbol CascadingParameterAttribute { get; }
public INamedTypeSymbol IComponentType { get; }
}
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