Class: MarkdownIt::RulesBlock::StateBlock

Inherits:
Object
  • Object
show all
Defined in:
lib/motion-markdown-it/rules_block/state_block.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(src, md, env, tokens) ⇒ StateBlock 



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 12

def initialize(src, md, env, tokens)
  @src = src

  # link to parser instance
  @md  = md
  @env = env

  #--- Internal state variables

  @tokens = tokens

  @bMarks = []  # line begin offsets for fast jumps
  @eMarks = []  # line end offsets for fast jumps
  @tShift = []  # indent for each line

  # block parser variables
  @blkIndent  = 0       # required block content indent (for example, if we are in list)
  @line       = 0       # line index in src
  @lineMax    = 0       # lines count
  @tight      = false   # loose/tight mode for lists
  @parentType = 'root'  # if `list`, block parser stops on two newlines
  @ddIndent   = -1      # indent of the current dd block (-1 if there isn't any)

  @level = 0

  # renderer
  @result = ''

  # Create caches
  # Generate markers.
  s            = @src
  indent       = 0
  indent_found = false

  start = pos = indent = 0
  len = s.length
  start.upto(len - 1) do |pos|
  # !!!!!!
  # for (start = pos = indent = 0, len = s.length pos < len pos++) {
    ch = s.charCodeAt(pos)

    if !indent_found
      if ch == 0x20  # space
        indent += 1
        next
      else
        indent_found = true
      end
    end

    if ch == 0x0A || pos == (len - 1)
      pos += 1 if ch != 0x0A
      @bMarks.push(start)
      @eMarks.push(pos)
      @tShift.push(indent)

      indent_found = false
      indent       = 0
      start        = pos + 1
    end
  end

  # Push fake entry to simplify cache bounds checks
  @bMarks.push(s.length)
  @eMarks.push(s.length)
  @tShift.push(0)

  @lineMax = @bMarks.length - 1 # don't count last fake line
end

Instance Attribute Details

#blkIndent ⇒ Object

Returns the value of attribute blkIndent.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 8

def blkIndent
  @blkIndent
end

#bMarks ⇒ Object

Returns the value of attribute bMarks.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def bMarks
  @bMarks
end

#ddIndent ⇒ Object

Returns the value of attribute ddIndent.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 8

def ddIndent
  @ddIndent
end

#eMarks ⇒ Object

Returns the value of attribute eMarks.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def eMarks
  @eMarks
end

#env ⇒ Object

Returns the value of attribute env.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def env
  @env
end

#level ⇒ Object

Returns the value of attribute level.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 9

def level
  @level
end

#line ⇒ Object

Returns the value of attribute line.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 8

def line
  @line
end

#lineMax ⇒ Object

Returns the value of attribute lineMax.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 8

def lineMax
  @lineMax
end

#md ⇒ Object

Returns the value of attribute md.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def md
  @md
end

#parentType ⇒ Object

Returns the value of attribute parentType.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 8

def parentType
  @parentType
end

#result ⇒ Object

Returns the value of attribute result.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 9

def result
  @result
end

#src ⇒ Object

Returns the value of attribute src.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def src
  @src
end

#tight ⇒ Object

Returns the value of attribute tight.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 8

def tight
  @tight
end

#tokens ⇒ Object

Returns the value of attribute tokens.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def tokens
  @tokens
end

#tShift ⇒ Object

Returns the value of attribute tShift.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 7

def tShift
  @tShift
end

Instance Method Details

#getLines(line_begin, line_end, indent, keepLastLF) ⇒ Object

cut lines range from source.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 145

def getLines(line_begin, line_end, indent, keepLastLF)
  line = line_begin

  return '' if line_begin >= line_end

  # Opt: don't use push queue for single line
  if (line + 1) == line_end
    first = @bMarks[line] + [@tShift[line], indent].min
    last = keepLastLF ? @bMarks[line_end] : @eMarks[line_end - 1]
    return @src.slice(first...last)
  end

  queue = Array.new(line_end - line_begin)

  i = 0
  while line < line_end
    shift = @tShift[line]
    shift = indent if shift > indent
    shift = 0 if shift < 0

    first = @bMarks[line] + shift

    if line + 1 < line_end || keepLastLF
      # No need for bounds check because we have fake entry on tail.
      last = @eMarks[line] + 1
    else
      last = @eMarks[line]
    end

    queue[i] = @src.slice(first...last)
    line += 1
    i    += 1
  end

  return queue.join('')
end

#isEmpty(line) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 97

def isEmpty(line)
  return @bMarks[line] + @tShift[line] >= @eMarks[line]
end

#push(type, tag, nesting) ⇒ Object

Push new token to “stream”.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 84

def push(type, tag, nesting)
  token       = Token.new(type, tag, nesting)
  token.block = true

  @level -= 1 if nesting < 0
  token.level = @level
  @level += 1 if nesting > 0

  @tokens.push(token)
  return token
end

#skipChars(pos, code) ⇒ Object

Skip char codes from given position



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 123

def skipChars(pos, code)
  max = @src.length
  while pos < max
    break if (@src.charCodeAt(pos) != code)
    pos += 1
  end
  return pos
end

#skipCharsBack(pos, code, min) ⇒ Object

Skip char codes reverse from given position - 1



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 134

def skipCharsBack(pos, code, min)
  return pos if pos <= min

  while (pos > min)
    return (pos + 1) if code != @src.charCodeAt(pos -= 1)
  end
  return pos
end

#skipEmptyLines(from) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 102

def skipEmptyLines(from)
  while from < @lineMax
    break if (@bMarks[from] + @tShift[from] < @eMarks[from])
    from += 1
  end
  return from
end

#skipSpaces(pos) ⇒ Object

Skip spaces from given position.



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# File 'lib/motion-markdown-it/rules_block/state_block.rb', line 112

def skipSpaces(pos)
  max = @src.length
  while pos < max
    break if @src.charCodeAt(pos) != 0x20 # space
    pos += 1
  end
  return pos
end