Class: SXP::Generator::Block

Inherits:
Object
  • Object
show all
Defined in:
vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb

Overview

A basic block containing constituent objects, either blocks or strings.

Constant Summary collapse

BLOCK_MIN_LENGTH = 
80

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(obj, indent) ⇒ Block

Returns a new instance of Block

Parameters:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb', line 19

def initialize(obj, indent)
  @indent = indent
  @elements = []
  if obj.is_a?(Array)
    obj.compact.each {|o| @elements << Block.new(o, indent + 1)}
  else
    @elements = obj
  end
end

Instance Attribute Details

#indent ⇒ Object (readonly) 



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb', line 15

def indent
  @indent
end

Instance Method Details

#formatted ⇒ String

Format block

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb', line 61

def formatted
  # Output individual block elements on separate lines
  buffer = ""

  if sxp? && length > BLOCK_MIN_LENGTH
    buffer += do_indent + '('
    first, *elems = @elements
    unless first.sxp?
      # It's atomic, write out after paren
      buffer += first.to_sxp + "\n"
    else
      buffer += "\n"
      elems.unshift(first)
    end
    elems.each do |e|
      buffer += e.formatted
    end
    buffer += do_indent + ")\n"
  else
    buffer += do_indent + @elements.to_sxp + "\n"
  end
  buffer
end

#length ⇒ Integer

Agregate length over each element accounting for spaces

Returns:

  • (Integer) —

    If indent is not not nil, returns zero



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb', line 34

def length
  if @elements.is_a?(Array)
    @elements.map(&:length).inject(:+).to_i + @elements.length - 1
  else
    @elements.to_sxp.length
  end
end

#sxp? ⇒ Boolean

Determins if this block is an SXP, or not

Returns:

  • (Boolean) 


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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb', line 54

def sxp?
  @elements.is_a?(Array)
end

#to_sxp ⇒ String

Turn block into a string in S-expression form This should only be called on a block when no indentation is to be applied

Returns:



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# File 'vendor/bundler/ruby/2.5.0/bundler/gems/sxp.rb-a4c21f2e7eec/lib/sxp/generator.rb', line 47

def to_sxp
  @elements.to_sxp
end