Class: Mutant::Diff

Inherits:
Object
  • Object
show all
Includes:
Adamantium::Flat
Defined in:
lib/mutant/diff.rb

Overview

Class to create diffs from source code

Constant Summary collapse

ADDITION = 
'+'.freeze
DELETION = 
'-'.freeze
NEWLINE = 
"\n".freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.build(old, new) ⇒ Diff

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Build new object from source strings

Parameters:

  • old (String)
  • new (String)

Returns:



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# File 'lib/mutant/diff.rb', line 51

def self.build(old, new)
  new(lines(old), lines(new))
end

Instance Method Details

#colorized_diff ⇒ String?

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Colorized unified source diff between old and new

Returns:

  • (String) —

    if there is a diff

  • (nil) —

    otherwise



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# File 'lib/mutant/diff.rb', line 37

def colorized_diff
  return unless diff
  diff.lines.map(&self.class.method(:colorize_line)).join
end

#diff ⇒ String?

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Unified source diff between old and new

Returns:

  • (String) —

    if there is exactly one diff

  • (nil) —

    otherwise



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# File 'lib/mutant/diff.rb', line 19

def diff
  return if diffs.empty?

  minimized_hunks.map do |hunk|
    hunk.diff(:unified) << NEWLINE
  end.join
end