/// <summary>
/// Compiles an <see cref="Expression"/> to a <see cref="Func{T,R}"/> of <see cref="IResolutionScope"/>, <see cref="Delegate"/>.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="resolutionContext">The resolution context.</param>
/// <param name="containerConfiguration">The container configuration.</param>
/// <returns>The compiled delegate.</returns>
public static Func <IResolutionScope, Delegate> CompileDynamicDelegate(this Expression expression,
ResolutionContext resolutionContext, ContainerConfiguration containerConfiguration)
{
if (!resolutionContext.DefinedVariables.IsEmpty)
{
resolutionContext.SingleInstructions.Add(expression);
expression = resolutionContext.SingleInstructions.AsBlock(resolutionContext.DefinedVariables.Walk());
}
if (containerConfiguration.ExternalExpressionCompiler != null)
{
return((Func <IResolutionScope, Delegate>)containerConfiguration.ExternalExpressionCompiler(
expression.AsLambda(resolutionContext.CurrentScopeParameter)));
}
#if IL_EMIT
if (!expression.TryEmit(out var factory, typeof(Func <IResolutionScope, Delegate>), typeof(Delegate),
resolutionContext.CurrentScopeParameter))
{
factory = expression.AsLambda <Func <IResolutionScope, Delegate> >(resolutionContext.CurrentScopeParameter).Compile();
}
return((Func <IResolutionScope, Delegate>)factory);
#else
return(expression.AsLambda <Func <IResolutionScope, Delegate> >(resolutionContext.CurrentScopeParameter).Compile());
#endif
}
/// <summary>
/// Compiles an <see cref="Expression"/> to a <see cref="Func{T,R}"/> of <see cref="IResolutionScope"/>, <see cref="object"/>.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="resolutionContext">The resolution context.</param>
/// <param name="containerConfiguration">The container configuration.</param>
/// <returns>The compiled delegate.</returns>
public static Func <IResolutionScope, object> CompileDelegate(this Expression expression,
ResolutionContext resolutionContext, ContainerConfiguration containerConfiguration)
{
if (expression.NodeType == ExpressionType.Constant)
{
var instance = ((ConstantExpression)expression).Value;
return(scope => instance);
}
if (!resolutionContext.DefinedVariables.IsEmpty)
{
resolutionContext.SingleInstructions.Add(expression);
expression = resolutionContext.SingleInstructions.AsBlock(resolutionContext.DefinedVariables.Walk());
}
if (containerConfiguration.ExternalExpressionCompiler != null)
{
return((Func <IResolutionScope, object>)containerConfiguration.ExternalExpressionCompiler(
expression.AsLambda(resolutionContext.CurrentScopeParameter)));
}
#if IL_EMIT
if (!expression.TryEmit(out var factory, typeof(Func <IResolutionScope, object>), typeof(object),
resolutionContext.CurrentScopeParameter))
{
factory = expression.AsLambda(resolutionContext.CurrentScopeParameter).Compile();
}
return((Func <IResolutionScope, object>)factory);
#else
return(expression.AsLambda <Func <IResolutionScope, object> >(resolutionContext.CurrentScopeParameter).Compile());
#endif
}
