Class: Propolize::DocumentChunks

Inherits:
Object
  • Object
show all
Defined in:
lib/propolize.rb

Overview

Propolize source code is parsed as a series of “document chunks”. (Each chunk is then converted to a “document component” by calling getDocumentComponent

and each component is then "written" to the output document by calling writeToDocument.)

Instance Method Summary collapse

Constructor Details

#initialize(srcText) ⇒ DocumentChunks

Returns a new instance of DocumentChunks.



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# File 'lib/propolize.rb', line 886

def initialize(srcText)
  @srcText = srcText
end

Instance Method Details

#createInitialChunkFromLine(line) ⇒ Object

Knowing that we are starting a new “chunk”, determine type of chunk based on the first line



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# File 'lib/propolize.rb', line 891

def createInitialChunkFromLine(line)
  specialLineMatch = line.match(/^\#\#([a-z\-]*)\s*(.*)$/) # does it start with "##<identifier>" with optional addition value?, and identifier is alphabetic or "-"?
  if specialLineMatch then
    return SpecialChunk.new(specialLineMatch[1], specialLineMatch[2])
  else
    specialTagMatch = line.match(/^\#:([a-z\-0-9]+)\s*(.*)$/) # does it start with "#:<alphanumeric-identifier>"?
    if specialTagMatch then
      return ParagraphChunk.new(specialTagMatch[2], :tag => specialTagMatch[1]) # paragraph with special tag
    else
      propositionMatch = line.match(/^\#\s*(.*)$/) # does it start with "# "?
      if propositionMatch then
        return PropositionChunk.new(propositionMatch[1]) # proposition
      else
        critiqueMatch = line.match(/^\?\?\s(.*)$/) # does it start with "?? " ?
        isCritique = critiqueMatch != nil # if so, this is a "critique" item
        if isCritique then
          line = critiqueMatch[1] # strip off the "?? " prefix to process the rest of the line
        end
        listMatch = line.match(/^\*\s+/) # does it start with "* " ?
        if listMatch then
          return ListChunk.new(line, :isCritique => isCritique) # list of items
        else
          blankLineMatch = line.match(/^\s*$/) # is it a blank line
          if blankLineMatch then
            return nil # blank line, so actually we don't start a new chunk yet
          else
            return ParagraphChunk.new(line, :isCritique => isCritique) # anything else, must be a paragraph
          end
        end
      end
    end
  end
end

#each ⇒ Object 



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# File 'lib/propolize.rb', line 925

def each
  currentChunk = nil
  for line in @srcText.split("\n") do
    if currentChunk == nil then
      currentChunk = createInitialChunkFromLine(line)
    else
      if currentChunk.isTerminatedBy?(line)
        yield currentChunk.postProcess
        currentChunk = createInitialChunkFromLine(line)
      else
        currentChunk.addLine(line)
      end
    end
  end
  if currentChunk
    yield currentChunk.postProcess
  end
end