public T Compile <T>(Expression <T> expression) where T : class
{
expression = (Expression <T>)_expressionMiddleware.Aggregate((Expression)expression, (e, m) => m.Invoke(e));
var closureFeature = _closureFeature;
if (closureFeature.TemplateClosure.CurrentIndex == -1)
{
closureFeature = new ClosureFeature();
_closureFeature.Children.AddLast(closureFeature);
}
var templateClosure = closureFeature.TemplateClosure;
var closure = closureFeature.ClosureInternal;
expression = (Expression <T>)closureFeature.ExpressionMiddleware.Invoke(expression);
var parameters = new[] { (ParameterExpression)closure }.Concat(expression.Parameters);
var lambda = Expression.Lambda(expression.Body, parameters);
var compiledLambda = lambda.Compile();
var outerParameters = expression.Parameters.Select(o => Expression.Parameter(o.Type, o.Name)).ToArray();
var store = Arg(templateClosure).Member(o => o.Store);
var parameterExpressions = new[] { store.Expression }.Concat(outerParameters);
var invocationExpression = Expression.Invoke(Expression.Constant(compiledLambda), parameterExpressions);
var outerLambda = Expression.Lambda <T>(invocationExpression, outerParameters);
return(outerLambda.Compile());
}
public DefaultExpressionCompiler(ICompiledHandlebarsConfiguration configuration, ClosureFeature closureFeature)
{
_closureFeature = closureFeature;
_templateClosure = closureFeature?.TemplateClosure;
_closure = closureFeature?.ClosureInternal;
_expressionMiddleware = configuration.ExpressionMiddleware;
}
public DefaultExpressionCompiler(ICompiledHandlebarsConfiguration configuration, ClosureFeature closureFeature)
{
_closureFeature = closureFeature;
_expressionMiddleware = configuration.ExpressionMiddleware;
}