Implement parsing extensions #123
Open
Commits on Jun 8, 2016
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Implement and expose block parsing API.
+ Document the parser structure for internal usage.
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[API]: parser: Expose 'setter' methods in cmark_parser.
As opposed to the previous commit, where I exposed getters for the private parser structure, this exposes two methods that will influence parsing, cmark_parser_add_child and cmark_parser_advance_offset.
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[API]: node: implement and expose cmark_node_set_type.
This is necessary for extensions implementing vertical rules. An example is setext headings: A heading --------- When cmark parses 'A heading', it first creates a paragraph block to contain it, it's only when cmark parses the second line that the type of the block is changed to the CMARK_NODE_TYPE_HEADING type.
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[API]: node: implement and expose cmark_node_set_user_data_free_func.
Ideally, this would be passed in set_user_data, but this would break API.
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[API]: node: Expose string_content.
By implementing cmark_node_get_string_content and cmark_node_set_string_content. This is useful for vertical rules in extensions, as they may need to access it in order to decide whether to update the block. Unfortunately, this overlaps with get_literal and set_literal. As far as I can tell we should deprecate these functions, and have them follow the get_string_content code path and set_string_content for the while.
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And expose and implement block parsing hooks
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cmark executable: add extension switches
Allow listing and attaching extensions. Also cleanup valgrind a little by removing exits and using cleanup gotos
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Define blocks constituting a table.
We have no syntax rules yet for creating them natively, but future extensions may provide some.
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cmark_parser: improve lifecycle management.
This slightly breaks API as finish will now return NULL after it has been called once, but I believe that's for the best. This fixes potential leaks of root when a parser was fed but not finished, and makes reusing a parser instance multiple times possible.
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syntax-extension: add "priv" field.
+ And pointer to a free function as well.
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cmark_parser: implement and expose reentrant feed function.
This can be useful for transclusion extensions for example, http://talk.commonmark.org/t/transclusion-or-including-sub-documents-for-reuse/270
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