Class: MarkdownIt::RulesBlock::List

Inherits:
Object
  • Object
show all
Defined in:
lib/motion-markdown-it/rules_block/list.rb

Class Method Summary collapse

Class Method Details

.list(state, startLine, endLine, silent) ⇒ Object 



92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
 
# File 'lib/motion-markdown-it/rules_block/list.rb', line 92

def self.list(state, startLine, endLine, silent)
  tight = true

  # Detect list type and position after marker
  if ((posAfterMarker = skipOrderedListMarker(state, startLine)) >= 0)
    isOrdered = true
  elsif ((posAfterMarker = skipBulletListMarker(state, startLine)) >= 0)
    isOrdered = false
  else
    return false
  end

  # We should terminate list on style change. Remember first one to compare.
  markerCharCode = state.src.charCodeAt(posAfterMarker - 1)

  # For validation mode we can terminate immediately
  return true if (silent)

  # Start list
  listTokIdx = state.tokens.length

  if (isOrdered)
    start       = state.bMarks[startLine] + state.tShift[startLine]
    markerValue = state.src[start, posAfterMarker - start - 1].to_i
    token       = state.push('ordered_list_open', 'ol', 1)
    if (markerValue > 1)
      token.attrs = [ [ 'start', markerValue ] ]
    end

  else
    token       = state.push('bullet_list_open', 'ul', 1)
  end

  token.map    = listLines = [ startLine, 0 ]
  token.markup = markerCharCode.chr

  #
  # Iterate list items
  #

  nextLine        = startLine
  prevEmptyEnd    = false
  terminatorRules = state.md.block.ruler.getRules('list')

  while (nextLine < endLine)
    contentStart = state.skipSpaces(posAfterMarker)
    max          = state.eMarks[nextLine]

    if (contentStart >= max)
      # trimming space in "-    \n  3" case, indent is 1 here
      indentAfterMarker = 1
    else
      indentAfterMarker = contentStart - posAfterMarker
    end

    # If we have more than 4 spaces, the indent is 1
    # (the rest is just indented code block)
    indentAfterMarker = 1 if (indentAfterMarker > 4)

    # "  -  test"
    #  ^^^^^ - calculating total length of this thing
    indent = (posAfterMarker - state.bMarks[nextLine]) + indentAfterMarker

    # Run subparser & write tokens
    token        = state.push('list_item_open', 'li', 1)
    token.markup = markerCharCode.chr
    token.map    = itemLines = [ startLine, 0 ]

    oldIndent               = state.blkIndent
    oldTight                = state.tight
    oldTShift               = state.tShift[startLine]
    oldParentType           = state.parentType
    state.tShift[startLine] = contentStart - state.bMarks[startLine]
    state.blkIndent         = indent
    state.tight             = true
    state.parentType        = 'list'

    state.md.block.tokenize(state, startLine, endLine, true)

    # If any of list item is tight, mark list as tight
    if (!state.tight || prevEmptyEnd)
      tight = false
    end
    # Item become loose if finish with empty line,
    # but we should filter last element, because it means list finish
    prevEmptyEnd = (state.line - startLine) > 1 && state.isEmpty(state.line - 1)

    state.blkIndent         = oldIndent
    state.tShift[startLine] = oldTShift
    state.tight             = oldTight
    state.parentType        = oldParentType

    token                   = state.push('list_item_close', 'li', -1)
    token.markup            = markerCharCode.chr

    nextLine                = startLine = state.line
    itemLines[1]            = nextLine
    contentStart            = state.bMarks[startLine]

    break if (nextLine >= endLine)
    break if (state.isEmpty(nextLine))

    #
    # Try to check if list is terminated or continued.
    #
    break if (state.tShift[nextLine] < state.blkIndent)

    # fail if terminating block found
    terminate = false
    (0...terminatorRules.length).each do |i|
      if (terminatorRules[i].call(state, nextLine, endLine, true))
        terminate = true
        break
      end
    end
    break if (terminate)

    # fail if list has another type
    if (isOrdered)
      posAfterMarker = skipOrderedListMarker(state, nextLine)
      break if (posAfterMarker < 0)
    else
      posAfterMarker = skipBulletListMarker(state, nextLine)
      break if (posAfterMarker < 0)
    end

    break if (markerCharCode != state.src.charCodeAt(posAfterMarker - 1))
  end

  # Finilize list
  if (isOrdered)
    token = state.push('ordered_list_close', 'ol', -1)
  else
    token = state.push('bullet_list_close', 'ul', -1)
  end
  token.markup = markerCharCode.chr

  listLines[1] = nextLine
  state.line   = nextLine

  # mark paragraphs tight if needed
  if (tight)
    markTightParagraphs(state, listTokIdx)
  end

  return true
end

.markTightParagraphs(state, idx) ⇒ Object 



75
76
77
78
79
80
81
82
83
84
85
86
87
88
 
# File 'lib/motion-markdown-it/rules_block/list.rb', line 75

def self.markTightParagraphs(state, idx)
  level = state.level + 2
  
  i = idx + 2
  l =  state.tokens.length
  while i < l
    if (state.tokens[i].level == level && state.tokens[i].type == 'paragraph_open')
      state.tokens[i + 2].hidden = true
      state.tokens[i].hidden     = true
      i += 2
    end
    i += 1
  end
end

.skipBulletListMarker(state, startLine) ⇒ Object

Search ‘[-+*][n ]`, returns next pos arter marker on success or -1 on fail.



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/motion-markdown-it/rules_block/list.rb', line 10

def self.skipBulletListMarker(state, startLine)
  pos = state.bMarks[startLine] + state.tShift[startLine]
  max = state.eMarks[startLine]

  marker = state.src.charCodeAt(pos)
  pos   += 1
  # Check bullet
  if (marker != 0x2A && # *
      marker != 0x2D && # -
      marker != 0x2B)   # +
    return -1
  end

  if (pos < max && state.src.charCodeAt(pos) != 0x20)
    # " 1.test " - is not a list item
    return -1
  end

  return pos
end

.skipOrderedListMarker(state, startLine) ⇒ Object

Search ‘d+[n ]`, returns next pos after marker on success or -1 on fail.



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
64
65
66
67
68
69
70
71
72
 
# File 'lib/motion-markdown-it/rules_block/list.rb', line 34

def self.skipOrderedListMarker(state, startLine)
  pos = state.bMarks[startLine] + state.tShift[startLine]
  max = state.eMarks[startLine]

  # List marker should have at least 2 chars (digit + dot)
  return -1 if (pos + 1 >= max)

  ch   = state.src.charCodeAt(pos)
  pos += 1

  return -1 if ch.nil?
  return -1 if (ch < 0x30 || ch > 0x39) # < 0 || > 9

  while true
    # EOL -> fail
    return -1 if (pos >= max)

    ch   = state.src.charCodeAt(pos)
    pos += 1

    if (ch >= 0x30 && ch <= 0x39) #  >= 0 && <= 9
      next
    end

    # found valid marker
    if (ch === 0x29 || ch === 0x2e) # ')' || '.'
      break
    end

    return -1
  end


  if (pos < max && state.src.charCodeAt(pos) != 0x20) # space
    # " 1.test " - is not a list item
    return -1
  end
  return pos
end