public bool TryBuildExpression(IBuildContext buildContext, ILifetime lifetime, out Expression baseExpression, out Exception error)
{
if (buildContext == null)
{
throw new ArgumentNullException(nameof(buildContext));
}
try
{
baseExpression = _expression;
if (_statements.Length > 0)
{
var thisVar = Expression.Variable(baseExpression.Type, "this");
baseExpression = Expression.Block(
new[] { thisVar },
Expression.Assign(thisVar, baseExpression),
Expression.Block(_statements),
thisVar
);
if (_isComplexType)
{
baseExpression = buildContext.ReplaceTypes(baseExpression);
}
baseExpression = buildContext.InjectDependencies(baseExpression, thisVar);
}
else
{
if (_isComplexType)
{
baseExpression = buildContext.ReplaceTypes(baseExpression);
}
baseExpression = buildContext.InjectDependencies(baseExpression);
}
baseExpression = buildContext.AddLifetime(baseExpression, lifetime);
error = default(Exception);
return(true);
}
catch (BuildExpressionException ex)
{
error = ex;
baseExpression = default(Expression);
return(false);
}
}
