Nested blocks in blockprocessor extension

[nurkkala]

Within a block processor, is it possible to create a block from scratch? For example, while processing an open block, could I arrange to output another block that either wraps the open block (becomes its parent), or one that precedes it in the output (becomes its previous sibling)?

[mojavelinux]

That's exactly what block processors are designed to do. They can insert any set of nodes into to the AST (the document model).

Here's an example:

wrapper = create_open_block parent, [], {}

wrapper << (create_open_block wrapper, reader.lines, attrs)

wrapper

(You have to decide where you want the attributes to go, but that's the general idea

Here's the APIs to be looking at:

* http://www.rubydoc.info/gems/asciidoctor/Asciidoctor/Extensions/Processor#create_block-instance_method

* http://www.rubydoc.info/gems/asciidoctor/Asciidoctor/Block#initialize-instance_method

Note that `create_open_block` is just a shorthand for `create_block parent, :open, ...`

-Dan

On Fri, Jan 29, 2016 at 9:07 AM, nurkkala [via Asciidoctor :: Discussion] <[hidden email]> wrote:

Within a block processor, is it possible to create a block from scratch? For example, while processing an open block, could I arrange to output another block that either wraps the open block (becomes its parent), or one that precedes it in the output (becomes its previous sibling)?

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[nurkkala]

Got it. I had missed the use of the append operation to insert the "sub-block" in the newly built one. Actually occurred to me after I went to bed and stopped thinking about the problem. :-)