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Contents
require 'gorillib/diff'
require 'stringio'
module TransformLeftToRight
attr_reader :left
DELETE_ME = Object.new
def display_key_header(key)
@left_lineage << [@left, key]
@left = @left[key]
@right_lineage << @right
@right = @right[key]
end
def only_left_key(_)
@left = DELETE_ME
end
def only_right_key(key)
@left = @right
end
def display_add(this, other)
if this.nil?
@left.insert(@ix, other)
@ix += 1
else
@left.delete_at(@ix)
end
end
def display_hetero(this, other)
@ix += 1
@left = @right
end
def display_noteql_items(*args)
@in_array = true
super(*args)
@in_array = false
end
def display_noteql_atoms(this, other)
@ix += 1
@left = @right
end
def decrease_indentation
tmp = @left
@left,key = @left_lineage.pop
if tmp.equal?(DELETE_ME)
@left.delete(key)
else
@left[key] = tmp
end
@right = @right_lineage.pop
end
def increase_indentation() end
def indent() end
def display_indices(ixl, ixr)
@ix = ixr
end
end
class TestDrawer
include Gorillib::DiffDrawerMethods
include TransformLeftToRight
def initialize this = nil, other = nil
@left_lineage = [@left = this]
@right_lineage = [@right = other]
@ix = 0
end
def self.diffing_objs this, other
diff_formatter.display_diff(this, other)
end
def self.diff_formatter(drawer = nil)
Gorillib::DiffFormatter.new(stream: StringIO.new, drawer: drawer)
end
def self.transform_ltor this, other
drawer = new(this, other)
Gorillib::DiffFormatter.new(drawer: drawer).display_diff(this, other)
drawer.left.should == other
end
end
Version data entries
25 entries across 25 versions & 1 rubygems