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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.
#if HAS_IOPERATION
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Threading.Tasks;
namespace Microsoft.CodeAnalysis.CodeMetrics
{
public abstract partial class CodeAnalysisMetricData
{
private sealed class NamespaceMetricData : CodeAnalysisMetricData
{
internal NamespaceMetricData(
INamespaceSymbol symbol,
int maintainabilityIndex,
ImmutableHashSet<INamedTypeSymbol> coupledNamedTypes,
long linesOfCode,
int cyclomaticComplexity,
int? depthOfInheritance,
ImmutableArray<CodeAnalysisMetricData> children)
: base(symbol, maintainabilityIndex, ComputationalComplexityMetrics.Default,
coupledNamedTypes, linesOfCode, cyclomaticComplexity, depthOfInheritance, children)
{
}
internal static async Task<NamespaceMetricData> ComputeAsync(INamespaceSymbol @namespace, CodeMetricsAnalysisContext context)
{
ImmutableArray<CodeAnalysisMetricData> children = await ComputeAsync(GetChildSymbols(@namespace), context).ConfigureAwait(false);
return ComputeFromChildren(@namespace, children, context);
}
internal static NamespaceMetricData ComputeSynchronously(INamespaceSymbol @namespace, CodeMetricsAnalysisContext context)
{
ImmutableArray<CodeAnalysisMetricData> children = ComputeSynchronously(GetChildSymbols(@namespace), context);
return ComputeFromChildren(@namespace, children, context);
}
private static NamespaceMetricData ComputeFromChildren(INamespaceSymbol @namespace, ImmutableArray<CodeAnalysisMetricData> children, CodeMetricsAnalysisContext context)
{
var coupledTypesBuilder = ImmutableHashSet.CreateBuilder<INamedTypeSymbol>();
int maintainabilityIndexTotal = 0;
int cyclomaticComplexity = 0;
int depthOfInheritance = 0;
long childrenLinesOfCode = 0;
foreach (CodeAnalysisMetricData child in children)
{
MetricsHelper.AddCoupledNamedTypes(coupledTypesBuilder, context.WellKnownTypeProvider, child.CoupledNamedTypes);
maintainabilityIndexTotal += child.MaintainabilityIndex;
cyclomaticComplexity += child.CyclomaticComplexity;
depthOfInheritance = Math.Max(child.DepthOfInheritance.GetValueOrDefault(), depthOfInheritance);
// Avoid double counting lines for nested types.
if (child.Symbol.ContainingType == null)
{
childrenLinesOfCode += child.SourceLines;
}
}
long linesOfCode = @namespace.IsImplicitlyDeclared ?
childrenLinesOfCode :
MetricsHelper.GetLinesOfCode(@namespace.DeclaringSyntaxReferences, @namespace, context);
int maintainabilityIndex = !children.IsEmpty ? MetricsHelper.GetAverageRoundedMetricValue(maintainabilityIndexTotal, children.Length) : 100;
return new NamespaceMetricData(@namespace, maintainabilityIndex,
coupledTypesBuilder.ToImmutable(), linesOfCode, cyclomaticComplexity, depthOfInheritance, children);
}
private static ImmutableArray<INamespaceOrTypeSymbol> GetChildSymbols(INamespaceSymbol @namespace)
{
// Compat: Create child nodes for types and nested types within the namespace.
// Child namespaces are directly child nodes of assembly.
var typesInNamespace = new HashSet<INamedTypeSymbol>();
foreach (INamedTypeSymbol typeMember in @namespace.GetTypeMembers())
{
processType(typeMember);
}
var builder = ImmutableArray.CreateBuilder<INamespaceOrTypeSymbol>();
foreach (INamedTypeSymbol namedType in typesInNamespace.OrderBy(t => t.ToDisplayString()))
{
builder.Add(namedType);
}
return builder.ToImmutable();
void processType(INamedTypeSymbol namedType)
{
typesInNamespace.Add(namedType);
foreach (INamedTypeSymbol nestedType in namedType.GetTypeMembers())
{
processType(nestedType);
}
}
}
}
}
}
#endif
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