protected override Expression VisitBlockHelperExpression(BlockHelperExpression bhex)
{
var fb = new FunctionBuilder(_context.Configuration);
var body = fb.Compile(((BlockExpression)bhex.Body).Expressions, _context.BindingContext);
var helper = _context.Configuration.BlockHelpers[bhex.HelperName.Replace("#", "")];
var arguments = new Expression[] {
Expression.Property(
_context.BindingContext,
typeof(BindingContext).GetProperty("TextWriter")),
body,
Expression.Property(
_context.BindingContext,
typeof(BindingContext).GetProperty("Value")),
Expression.NewArrayInit(typeof(object), bhex.Arguments)
};
if(helper.Target != null)
{
return Expression.Call(
Expression.Constant(helper.Target),
helper.Method,
arguments);
}
else
{
return Expression.Call(
helper.Method,
arguments);
}
}
private Expression GetObjectIterator(Expression contextParameter, IteratorExpression iex)
{
var fb = new FunctionBuilder(_context.Configuration);
return Expression.Block(
Expression.Assign(contextParameter,
Expression.New(
typeof(ObjectEnumeratorBindingContext).GetConstructor(new[] { typeof(BindingContext) }),
new Expression[] { _context.BindingContext })),
Expression.Call(
new Action<ObjectEnumeratorBindingContext, object, Action<TextWriter, object>, Action<TextWriter, object>>(Iterate).Method,
new Expression[] {
Expression.Convert(contextParameter, typeof(ObjectEnumeratorBindingContext)),
iex.Sequence,
fb.Compile(new [] { iex.Template }, contextParameter),
fb.Compile(new [] { iex.IfEmpty }, _context.BindingContext)
}));
}
public HandlebarsCompiler(HandlebarsConfiguration configuration)
{
_tokenizer = new Tokenizer(configuration);
_expressionBuilder = new ExpressionBuilder(configuration);
_functionBuilder = new FunctionBuilder(configuration);
}
public HandlebarsCompiler(HandlebarsConfiguration configuration)
{
_tokenizer = new Tokenizer(configuration);
_expressionBuilder = new ExpressionBuilder(configuration);
_functionBuilder = new FunctionBuilder(configuration);
}