Class: GitDiffMap

Inherits:
Object
  • Object
show all
Defined in:
lib/git_diff_map/line.rb,
lib/git_diff_map.rb,
lib/git_diff_map/patch.rb,
lib/git_diff_map/version.rb

Overview

Originally from rubocop-definition_validator

This class override changed_lines method. The original method retuns only added lines. However we want added and removed lines.

Defined Under Namespace

Classes: Line, Patch

Constant Summary collapse

VERSION = 
"0.1"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(patch:) ⇒ GitDiffMap

Returns a new instance of GitDiffMap.



8
9
10
 
# File 'lib/git_diff_map.rb', line 8

def initialize(patch:)
  @patch = patch
end

Instance Attribute Details

#patch ⇒ Object (readonly)

Returns the value of attribute patch.



6
7
8
 
# File 'lib/git_diff_map.rb', line 6

def patch
  @patch
end

Class Method Details

.parse(diff) ⇒ Object 



12
13
14
15
 
# File 'lib/git_diff_map.rb', line 12

def self.parse(diff)
  patch = GitDiffMap::Patch.new(GitDiffParser::Patch.new(diff))
  self.new(patch: patch)
end

Instance Method Details

#translate_new_lines_to_original_lines(lines) ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/git_diff_map.rb', line 21

def translate_new_lines_to_original_lines(lines)
  results = []

  all_changes = patch.changed_lines.dup
  offset = 0

  lines.each do |new_line|
    while true
      if all_changes.empty?
        results << new_line + offset
        break
      else
        change = all_changes.first

        case change.type
        when '-'
          if new_line + offset < change.number
            results << new_line + offset
            break
          end

          offset += 1
        when '+'
          if new_line < change.number
            results << new_line + offset
            break
          end

          if new_line == change.number
            results << nil
            break
          end

          offset -= 1
        end

        all_changes.shift
      end
    end
  end

  results
end

#translate_new_to_original(new_line) ⇒ Object 



17
18
19
 
# File 'lib/git_diff_map.rb', line 17

def translate_new_to_original(new_line)
  translate_new_lines_to_original_lines([new_line]).first
end

#translate_original_lines_to_new_lines(lines) ⇒ Object 



69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
 
# File 'lib/git_diff_map.rb', line 69

def translate_original_lines_to_new_lines(lines)
  results = []

  all_changes = patch.changed_lines.dup
  offset = 0

  lines.each do |original_line|
    while true
      if all_changes.empty?
        results << original_line + offset
        break
      else
        change = all_changes.first

        case change.type
        when '+'
          if original_line + offset < change.number
            results << original_line + offset
            break
          end

          offset += 1
        when '-'
          if original_line < change.number
            results << original_line + offset
            break
          end

          if original_line == change.number
            results << nil
            break
          end

          offset -= 1
        end

        all_changes.shift
      end
    end
  end

  results
end

#translate_original_to_new(original_line) ⇒ Object 



65
66
67
 
# File 'lib/git_diff_map.rb', line 65

def translate_original_to_new(original_line)
  translate_original_lines_to_new_lines([original_line]).first
end