private System.Linq.Expressions.Expression[] GetDeferredSectionTemplates(DeferredSectionExpression dsex)
{
var fb = new FunctionBuilder(CompilationContext.Engine);
var body = fb.Compile(dsex.Body.Expressions, CompilationContext.BindingContext);
var inversion = fb.Compile(dsex.Inversion.Expressions, CompilationContext.BindingContext);
var sectionPrefix = dsex.Path.Path.Substring(0, 1);
switch (sectionPrefix)
{
case "#":
return(new[] { body, inversion });
case "^":
return(new[] { inversion, body });
default:
throw new HandlebarsCompilerException("Tried to compile a section expression that did not begin with # or ^");
}
}
protected virtual Expression VisitDeferredSectionExpression(DeferredSectionExpression dsex)
{
return(dsex);
}
protected override System.Linq.Expressions.Expression VisitDeferredSectionExpression(DeferredSectionExpression dsex)
{
#if netstandard
var method = new Action <object, BindingContext, Action <TextWriter, object>, Action <TextWriter, object> >(RenderSection).GetMethodInfo();
#else
var method = new Action <object, BindingContext, Action <TextWriter, object>, Action <TextWriter, object> >(RenderSection).Method;
#endif
System.Linq.Expressions.Expression path = HandlebarsExpression.PathExpression(dsex.Path.Path.Substring(1));
System.Linq.Expressions.Expression context = CompilationContext.BindingContext;
System.Linq.Expressions.Expression[] templates = GetDeferredSectionTemplates(dsex);
return(System.Linq.Expressions.Expression.Call(method, new[] { path, context }.Concat(templates)));
}
protected virtual System.Linq.Expressions.Expression VisitDeferredSectionExpression(DeferredSectionExpression dsex)
{
return(dsex);
}
