func executeHelper(helper *structure.Helper, values *structure.RequestData, context int) []byte {
// Set context and set it back to the old value once fuction returns
defer setCurrentHelperContext(values, values.CurrentHelperContext)
values.CurrentHelperContext = context
block := helper.Block
indexTracker := 0
extended := false
var extendHelper *structure.Helper
for index, child := range helper.Children {
// Handle extend helper
if index == 0 && child.Name == "!<" {
extended = true
extendHelper = compiledTemplates.m[string(child.Function(&child, values))]
} else {
var buffer bytes.Buffer
toAdd := child.Function(&child, values)
buffer.Write(block[:child.Position+indexTracker])
buffer.Write(toAdd)
buffer.Write(block[child.Position+indexTracker:])
block = buffer.Bytes()
indexTracker += len(toAdd)
}
}
if extended {
extendHelper.BodyHelper.Block = block
return executeHelper(extendHelper, values, values.CurrentHelperContext) // TODO: not sure if context = values.CurrentHelperContext is right.
}
return block
}
func setCurrentHelperContext(values *structure.RequestData, context int) {
values.CurrentHelperContext = context
}