func extractTokens(parser *core.Parser, container core.Tag, config *core.Configuration) error {
stack := []core.Tag{container}
preserveWhiteSpace := config.GetPreserveWhitespace()
for parser.HasMore() {
pre, markupType := parser.ToMarkup(preserveWhiteSpace)
if len(pre) > 0 {
container.AddCode(newLiteral(pre))
}
if markupType == core.OutputMarkup {
code, err := newOutput(parser)
if err != nil {
return err
}
if code != nil {
container.AddCode(code)
}
} else if markupType == core.TagMarkup {
tag, err := newTag(parser, config)
if err != nil {
return err
}
switch tag.Type() {
case core.ContainerTag, core.LoopTag:
container.AddCode(tag)
container = tag
stack = append(stack, container)
case core.EndTag:
l := len(stack) - 1
container = stack[l]
if tag.Name() != container.Name() {
return parser.Error(fmt.Sprintf("end tag \"end%s\" cannot terminate %q", tag.Name(), container.Name()))
}
stack = stack[0:l]
container = stack[l-1]
parser.SkipPastTag()
case core.SiblingTag:
if err := stack[len(stack)-1].AddSibling(tag); err != nil {
return err
}
container = tag
case core.StandaloneTag:
container.AddCode(tag)
}
} else {
break
}
}
return nil
}