Class: Markbridge::Renderers::Discourse::TagLibrary

Inherits:
Object
  • Object
show all
Defined in:
lib/markbridge/renderers/discourse/tag_library.rb

Overview

Library of rendering tags for different element types

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ TagLibrary

Returns a new instance of TagLibrary.



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# File 'lib/markbridge/renderers/discourse/tag_library.rb', line 8

def initialize
  @tags = {}
end

Class Method Details

.default ⇒ TagLibrary

Create the default tag library for Discourse Markdown

Returns:



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# File 'lib/markbridge/renderers/discourse/tag_library.rb', line 52

def self.default
  library = new

  # Auto-register tags based on naming convention
  library.auto_register!

  # Special cases: inline tags that don't follow the convention
  library.register AST::LineBreak, Tags::LineBreakTag.new
  library.register AST::HorizontalRule, Tags::HorizontalRuleTag.new

  library
end

Instance Method Details

#[](element_class) ⇒ Tag?

Get tag for an element class

Parameters:

  • element_class (Class)

Returns:



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# File 'lib/markbridge/renderers/discourse/tag_library.rb', line 23

def [](element_class)
  @tags[element_class]
end

#auto_register! ⇒ self

Auto-register all tags using naming convention Convention: BoldTag handles AST::Bold, ItalicTag handles AST::Italic, etc.

Returns:

  • (self) 


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# File 'lib/markbridge/renderers/discourse/tag_library.rb', line 30

def auto_register!
  Tags.constants.each do |tag_constant|
    tag_class = Tags.const_get(tag_constant)
    next unless tag_class.is_a?(Class) && tag_class < Tag

    # Extract element name from tag name: BoldTag → Bold
    element_name = tag_constant.to_s.sub(/Tag$/, "")
    element_class =
      begin
        AST.const_get(element_name)
      rescue StandardError
        nil
      end

    register(element_class, tag_class.new) if element_class
  end

  self
end

#register(element_class, tag) ⇒ Object

Register a tag for an element class

Parameters:

  • element_class (Class) —

    the element class

  • tag (Tag) —

    the tag instance



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# File 'lib/markbridge/renderers/discourse/tag_library.rb', line 15

def register(element_class, tag)
  @tags[element_class] = tag
  self
end