Class: Unified::Chunk

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attrs = {}) ⇒ Chunk

Returns a new instance of Chunk.



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# File 'lib/unified/chunk.rb', line 9

def initialize(attrs = {})
  @original_line_number = attrs[:original]
  @modified_line_number = attrs[:modified]
  @section_header = attrs[:section_header]
  @lines = attrs[:lines].map {|s| Unified::Line.new(s) }
end

Instance Attribute Details

#lines ⇒ Object (readonly)

Returns the value of attribute lines.



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# File 'lib/unified/chunk.rb', line 6

def lines
  @lines
end

#modified_line_number ⇒ Object (readonly)

Returns the value of attribute modified_line_number.



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# File 'lib/unified/chunk.rb', line 5

def modified_line_number
  @modified_line_number
end

#original_line_number ⇒ Object (readonly)

Returns the value of attribute original_line_number.



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# File 'lib/unified/chunk.rb', line 4

def original_line_number
  @original_line_number
end

#section_header ⇒ Object (readonly)

Returns the value of attribute section_header.



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# File 'lib/unified/chunk.rb', line 7

def section_header
  @section_header
end

Instance Method Details

#==(another) ⇒ Object 



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# File 'lib/unified/chunk.rb', line 77

def ==(another)
 @modified_line_number == another.modified_line_number and
 @original_line_number == another.original_line_number and
 @section_header == another.section_header and
 @lines = another.lines
end

#each_line ⇒ Object

Iterator for lines passing |line, original_line_number, modified_line_number| as block arguments



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# File 'lib/unified/chunk.rb', line 56

def each_line
  original_line_number = @original_line_number
  modified_line_number = @modified_line_number

  @lines.each do |line|
    if line.addition?
      yield line, nil, modified_line_number
      modified_line_number += 1
    elsif line.deletion?
      yield line, original_line_number, nil
      original_line_number += 1
    elsif line.unchanged?
      yield line, original_line_number, modified_line_number
      original_line_number += 1
      modified_line_number += 1
    else
      yield line
    end
  end
end

#header ⇒ Object 



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# File 'lib/unified/chunk.rb', line 40

def header
  parts = "@@"
  parts << " -#{@original_line_number}"
  parts << ",#{number_of_original_lines}" unless number_of_original_lines == 1
  parts << " +#{@modified_line_number}"
  parts << ",#{number_of_modified_lines}" unless number_of_modified_lines == 1
  parts << " @@"
  parts << " #{@section_header}" unless @section_header.nil?
  parts
end

#number_of_added_lines ⇒ Object 



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# File 'lib/unified/chunk.rb', line 24

def number_of_added_lines
  @number_of_deleted_lines ||= number_of_lines_by_type(:addition?)
end

#number_of_deleted_lines ⇒ Object 



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# File 'lib/unified/chunk.rb', line 20

def number_of_deleted_lines
  @number_of_added_lines ||= number_of_lines_by_type(:deletion?)
end

#number_of_modified_lines ⇒ Object 



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# File 'lib/unified/chunk.rb', line 36

def number_of_modified_lines
  @number_of_modified_lines ||= number_of_unchanged_lines + number_of_added_lines
end

#number_of_original_lines ⇒ Object 



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# File 'lib/unified/chunk.rb', line 32

def number_of_original_lines
  @number_of_original_lines ||= number_of_unchanged_lines + number_of_deleted_lines
end

#number_of_unchanged_lines ⇒ Object 



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# File 'lib/unified/chunk.rb', line 28

def number_of_unchanged_lines
  @number_of_unchanged_lines ||= number_of_lines_by_type(:unchanged?)
end

#to_s ⇒ Object 



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# File 'lib/unified/chunk.rb', line 51

def to_s
  header + "\n" + @lines.join("\n")
end

#total_number_of_lines ⇒ Object 



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# File 'lib/unified/chunk.rb', line 16

def total_number_of_lines
  @number_of_lines ||= @lines.size
end