private Expression InlineExpression(Expression thisExpression, MethodInfo targetMethod, Maybe <InlineableAttribute> inlinableAttribute, ReadOnlyCollection <Expression> targetArguments)
{
Try <LambdaExpression> @try = InlineVisitor.FindMethodToInline(targetMethod, inlinableAttribute.Value.InlineMethodName).Select <LambdaExpression>(delegate(MethodInfo methodInfo)
{
object[] parameterValuesToInline = InlineVisitor.GetParameterValuesToInline(targetMethod, targetArguments, methodInfo, this._inlineEnvironment);
return((LambdaExpression)methodInfo.Invoke(null, parameterValuesToInline));
}).Recover((Exception exception) => Try.Create <LambdaExpression>(new Func <LambdaExpression>(targetMethod.Decompile)).Recover((Exception _) => new Failure <LambdaExpression>(exception)));
IEnumerable <Expression> newExpr = (thisExpression == null) ? targetArguments : new Expression[]
{
thisExpression
}.Concat(targetArguments);
return(@try.Value.Splice(newExpr));
}
private static object[] GetParameterValuesToInline(MethodInfo targetMethod, ReadOnlyCollection <Expression> targetArguments, MethodInfo methodToInline, IEnumerable <object> inlineEnvironments)
{
var inner = targetMethod.GetParameters().Select((ParameterInfo parameter, int index) => new
{
value = targetArguments[index],
parameter = parameter
}).ToArray();
var outer = methodToInline.GetParameters().Select((ParameterInfo parameter, int index) => new
{
index,
parameter
}).ToArray();
IEnumerable <object> source =
from inlineParam in outer
join targetParam in inner on inlineParam.parameter.Name equals targetParam.parameter.Name into targetParameterTmpCollection
from targetParameter in targetParameterTmpCollection.DefaultIfEmpty()
let value = (targetParameter == null) ? InlineVisitor.GetValueFromEnvironment(inlineParam.parameter.ParameterType, inlineEnvironments, methodToInline) : InlineVisitor.GetValueByExpression(targetParameter.value, methodToInline)
orderby inlineParam.index
select value;
return(source.ToArray <object>());
}