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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Mono.Cecil;
namespace Mono.Linker.Tests.Extensions
{
public static class CecilExtensions
{
public static IEnumerable<TypeDefinition> AllDefinedTypes (this AssemblyDefinition assemblyDefinition)
{
return assemblyDefinition.Modules.SelectMany (m => m.AllDefinedTypes ());
}
public static IEnumerable<TypeDefinition> AllDefinedTypes (this ModuleDefinition moduleDefinition)
{
foreach (var typeDefinition in moduleDefinition.Types) {
yield return typeDefinition;
foreach (var definition in typeDefinition.AllDefinedTypes ())
yield return definition;
}
}
public static IEnumerable<TypeDefinition> AllDefinedTypes (this TypeDefinition typeDefinition)
{
foreach (var nestedType in typeDefinition.NestedTypes) {
yield return nestedType;
foreach (var definition in nestedType.AllDefinedTypes ())
yield return definition;
}
}
public static IEnumerable<IMemberDefinition> AllMembers (this ModuleDefinition module)
{
foreach (var type in module.AllDefinedTypes ()) {
yield return type;
foreach (var member in type.AllMembers ())
yield return member;
}
}
public static IEnumerable<IMemberDefinition> AllMembers (this TypeDefinition type)
{
foreach (var field in type.Fields)
yield return field;
foreach (var prop in type.Properties)
yield return prop;
foreach (var method in type.Methods)
yield return method;
foreach (var @event in type.Events)
yield return @event;
}
public static IEnumerable<MethodDefinition> AllMethods (this TypeDefinition type)
{
foreach (var m in type.AllMembers ()) {
switch (m) {
case MethodDefinition method:
yield return method;
break;
case PropertyDefinition @property:
if (@property.GetMethod != null)
yield return @property.GetMethod;
if (@property.SetMethod != null)
yield return @property.SetMethod;
break;
case EventDefinition @event:
if (@event.AddMethod != null)
yield return @event.AddMethod;
if (@event.RemoveMethod != null)
yield return @event.RemoveMethod;
break;
default:
break;
}
}
}
public static bool HasAttribute (this ICustomAttributeProvider provider, string name)
{
return provider.CustomAttributes.Any (ca => ca.AttributeType.Name == name);
}
public static bool HasAttributeDerivedFrom (this ICustomAttributeProvider provider, string name)
{
return provider.CustomAttributes.Any (ca => ca.AttributeType.Resolve ().DerivesFrom (name));
}
public static bool DerivesFrom (this TypeDefinition type, string baseTypeName)
{
if (type.Name == baseTypeName)
return true;
if (type.BaseType == null)
return false;
if (type.BaseType.Name == baseTypeName)
return true;
return type.BaseType.Resolve ()?.DerivesFrom (baseTypeName) ?? false;
}
public static PropertyDefinition GetPropertyDefinition (this MethodDefinition method)
{
if (!method.IsSetter && !method.IsGetter)
throw new ArgumentException ();
var propertyName = method.Name.Substring (4);
return method.DeclaringType.Properties.First (p => p.Name == propertyName);
}
public static string GetSignature (this MethodDefinition method)
{
var builder = new StringBuilder ();
builder.Append (method.Name);
if (method.HasGenericParameters) {
builder.Append ('<');
for (int i = 0; i < method.GenericParameters.Count - 1; i++)
builder.Append ($"{method.GenericParameters[i]},");
builder.Append ($"{method.GenericParameters[method.GenericParameters.Count - 1]}>");
}
builder.Append ("(");
if (method.HasParameters) {
for (int i = 0; i < method.Parameters.Count - 1; i++) {
// TODO: modifiers
// TODO: default values
builder.Append ($"{method.Parameters[i].ParameterType},");
}
builder.Append (method.Parameters[method.Parameters.Count - 1].ParameterType);
}
builder.Append (")");
return builder.ToString ();
}
public static object GetConstructorArgumentValue (this CustomAttribute attr, int argumentIndex)
{
return attr.ConstructorArguments[argumentIndex].Value;
}
public static object GetPropertyValue (this CustomAttribute attr, string propertyName)
{
foreach (var prop in attr.Properties)
if (prop.Name == propertyName)
return prop.Argument.Value;
return null;
}
}
}
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