Class: Solargraph::CodeMap

Inherits:
Object
  • Object
show all
Includes:
NodeMethods
Defined in:
lib/solargraph/code_map.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from NodeMethods

#infer, #pack_name, #resolve_node_signature, #stack_node_signature, #unpack_name, #yard_options

Constructor Details

#initialize(code: '', filename: nil, workspace: nil, api_map: nil) ⇒ CodeMap

Returns a new instance of CodeMap.



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/solargraph/code_map.rb', line 10

def initialize code: '', filename: nil, workspace: nil, api_map: nil
  unless workspace.nil?
    workspace = workspace.gsub(File::ALT_SEPARATOR, File::SEPARATOR) unless File::ALT_SEPARATOR.nil?
  end
  if workspace.nil? and !filename.nil?
    filename = filename.gsub(File::ALT_SEPARATOR, File::SEPARATOR) unless File::ALT_SEPARATOR.nil?
    workspace = CodeMap.find_workspace(filename)
  end
  @filename = filename
  @api_map = api_map
  if @api_map.nil?
    @api_map = ApiMap.new(workspace)
  end

  @code = code.gsub(/\r/, '')
  tries = 0
  # Hide incomplete code to avoid syntax errors
  tmp = "#{@code}\nX".gsub(/[\.@]([\s])/, '#\1').gsub(/([\A\s]?)def([\s]*?[\n\Z])/, '\1#ef\2')
  begin
    node, comments = Parser::CurrentRuby.parse_with_comments(tmp)
    @node = @api_map.append_node(node, comments, filename)
  rescue Parser::SyntaxError => e
    if tries < 10
      tries += 1
      spot = e.diagnostic.location.begin_pos
      if spot == tmp.length
        tmp = tmp[0..-2] + '#'
      else
        tmp = tmp[0..spot] + '#' + tmp[spot+2..-1].to_s
      end
      retry
    end
    raise e
  end
end

Instance Attribute Details

#api_map ⇒ Object

Returns the value of attribute api_map.



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

def api_map
  @api_map
end

#node ⇒ Object

Returns the value of attribute node.



5
6
7
 
# File 'lib/solargraph/code_map.rb', line 5

def node
  @node
end

Class Method Details

.find_workspace(filename) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'lib/solargraph/code_map.rb', line 46

def self.find_workspace filename
  return nil if filename.nil?
  dirname = filename
  lastname = nil
  result = nil
  until dirname == lastname
    if File.file?("#{dirname}/Gemfile")
      result = dirname
      break
    end
    lastname = dirname
    dirname = File.dirname(dirname)
  end
  result ||= File.dirname(filename)
  result.gsub!(File::ALT_SEPARATOR, File::SEPARATOR) unless File::ALT_SEPARATOR.nil?
  result
end

Instance Method Details

#build_signature(node, parts) ⇒ Object 



314
315
316
317
318
319
320
321
322
323
 
# File 'lib/solargraph/code_map.rb', line 314

def build_signature(node, parts)
  if node.kind_of?(AST::Node)
    if node.type == :send
      parts.unshift node.children[1].to_s
    elsif node.type == :const
      parts.unshift unpack_name(node)
    end
    build_signature(node.children[0], parts)
  end
end

#get_instance_variables_at(index) ⇒ Object 



144
145
146
147
148
 
# File 'lib/solargraph/code_map.rb', line 144

def get_instance_variables_at(index)
  node = parent_node_from(index, :def, :defs, :class, :module)
  ns = namespace_at(index) || ''
  @api_map.get_instance_variables(ns, (node.type == :def ? :instance : :class))
end

#get_local_variables_and_methods_at(index) ⇒ Object 



344
345
346
347
348
349
350
351
352
353
354
355
356
 
# File 'lib/solargraph/code_map.rb', line 344

def get_local_variables_and_methods_at(index)
  result = []
  local = parent_node_from(index, :class, :module, :def, :defs) || @node
  result += get_local_variables_from(local)
  scope = namespace_at(index) || @node
  if local.type == :def
    result += @api_map.get_instance_methods(scope, visibility: [:public, :private, :protected])
  else
    result += @api_map.get_methods(scope, visibility: [:public, :private, :protected])
  end
  result += @api_map.get_methods('Kernel')
  result
end

#get_offset(line, col) ⇒ Object 



64
65
66
67
68
69
70
71
72
 
# File 'lib/solargraph/code_map.rb', line 64

def get_offset line, col
  offset = 0
  if line > 0
    @code.lines[0..line - 1].each { |l|
      offset += l.length
    }
  end
  offset + col
end

#get_signature_at(index) ⇒ Object 



282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
 
# File 'lib/solargraph/code_map.rb', line 282

def get_signature_at index
  brackets = 0
  squares = 0
  parens = 0
  signature = ''
  index -=1
  while index >= 0
    break if brackets > 0 or parens > 0 or squares > 0
    char = @code[index, 1]
    if char == ')'
      parens -=1
    elsif char == ']'
      squares -=1
    elsif char == '}'
      brackets -= 1
    elsif char == '('
      parens += 1
    elsif char == '{'
      brackets += 1
    elsif char == '['
      squares += 1
    end
    if brackets == 0 and parens == 0 and squares == 0
      break if ['"', "'", ',', ' ', "\t", "\n"].include?(char)
      signature = char + signature if char.match(/[a-z0-9:\._@]/i)
      break if char == '@'
    end
    index -= 1
  end
  signature
end

#get_snippets_at(index) ⇒ Object 



325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
 
# File 'lib/solargraph/code_map.rb', line 325

def get_snippets_at(index)
  result = []
  Snippets.definitions.each_pair { |name, detail|
    matched = false
    prefix = detail['prefix']
    while prefix.length > 0
      if @code[index-prefix.length, prefix.length] == prefix
        matched = true
        break
      end
      prefix = prefix[0..-2]
    end
    if matched
      result.push Suggestion.new(detail['prefix'], kind: Suggestion::KEYWORD, detail: name, insert: detail['body'].join("\r\n"))
    end
  }
  result
end

#get_type_comment(node) ⇒ Object 



272
273
274
275
276
277
278
279
280
 
# File 'lib/solargraph/code_map.rb', line 272

def get_type_comment node
  obj = nil
  cmnt = @api_map.get_comment_for(node)
  unless cmnt.nil?
    tag = cmnt.tag(:type)
    obj = tag.types[0] unless tag.nil? or tag.types.empty?
  end
  obj
end

#merge(node) ⇒ Object 



74
75
76
 
# File 'lib/solargraph/code_map.rb', line 74

def merge node
  api_map.merge node
end

#namespace_at(index) ⇒ Object 



104
105
106
107
108
109
110
111
112
113
114
115
116
 
# File 'lib/solargraph/code_map.rb', line 104

def namespace_at(index)
  tree = tree_at(index)
  return nil if tree.length == 0
  node = parent_node_from(index, :module, :class)
  slice = tree[(tree.index(node) || 0)..-1]
  parts = []
  slice.reverse.each { |n|
    if n.type == :class or n.type == :module
      parts.push unpack_name(n.children[0])
    end
  }
  parts.join("::")
end

#node_at(index) ⇒ Object 



85
86
87
 
# File 'lib/solargraph/code_map.rb', line 85

def node_at(index)
  tree_at(index).first
end

#parent_node_from(index, *types) ⇒ Object 



94
95
96
97
98
99
100
101
102
 
# File 'lib/solargraph/code_map.rb', line 94

def parent_node_from(index, *types)
  arr = tree_at(index)
  arr.each { |a|
    if a.kind_of?(AST::Node) and (types.empty? or types.include?(a.type))
      return a
    end
  }
  @node
end

#phrase_at(index) ⇒ Object 



118
119
120
121
122
123
124
125
126
127
128
129
 
# File 'lib/solargraph/code_map.rb', line 118

def phrase_at index
  word = ''
  cursor = index - 1
  while cursor > -1
    char = @code[cursor, 1]
    break if char.nil? or char == ''
    break unless char.match(/[\s;=\(\)\[\]\{\}]/).nil?
    word = char + word
    cursor -= 1
  end
  word
end

#resolve_signature_at(index) ⇒ Array<Solargraph::Suggestion>

Find the signature at the specified index and get suggestions based on its inferred type.

Returns:



219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
 
# File 'lib/solargraph/code_map.rb', line 219

def resolve_signature_at index
  result = []
  signature = get_signature_at(index)
  ns_here = namespace_at(index)
  scope = parent_node_from(index, :class, :module, :def, :defs) || @node
  parts = signature.split('.')
  var = find_local_variable_node(parts[0], scope)
  if var.nil?
    # It's not a local variable
    fqns = @api_map.find_fully_qualified_namespace(signature, ns_here)
    if fqns.nil?
      # It's a method call
      sig_scope = (scope.type == :def ? :instance : :class)
      type = @api_map.infer_signature_type(signature, ns_here, scope: sig_scope)
      result.concat @api_map.get_instance_methods(type) unless type.nil?
    else
      if fqns == ns_here
        result.concat @api_map.get_methods(fqns, '', visibility: [:private, :protected, :public])
      else
        result.concat @api_map.get_methods(fqns)
      end
    end
  else
    # It's a local variable. Get the type from the node
    type = get_type_comment(var)
    type = infer(var.children[1]) if type.nil?
    if type.nil?
      vsig = resolve_node_signature(var.children[1])
      vparts = vsig.split('.')
      fqns = @api_map.find_fully_qualified_namespace(vparts[0], ns_here)
      if fqns.nil?
        vtype = @api_map.infer_signature_type(vsig, ns_here, scope: :instance)
      else
        vtype = @api_map.infer_signature_type(vparts[1..-1].join('.'), fqns, scope: :class)
      end
      fqns = @api_map.find_fully_qualified_namespace(vtype, ns_here)
      signature = parts[1..-1].join('.')
      type = @api_map.infer_signature_type(signature, fqns, scope: :instance)
    end
    unless type.nil?
      lparts = signature.split('.')
      if lparts.length > 1
        lsig = lparts[1..-1].join('.')
        ltype = @api_map.infer_signature_type(lsig, type, scope: :instance)
        result.concat @api_map.get_instance_methods(ltype) unless ltype.nil?
      else
        result.concat @api_map.get_instance_methods(type)
      end
    end
  end
  result
end

#string_at?(index) ⇒ Boolean

Returns:

  • (Boolean) 


89
90
91
92
 
# File 'lib/solargraph/code_map.rb', line 89

def string_at?(index)
  n = node_at(index)
  n.kind_of?(AST::Node) and n.type == :str
end

#suggest_at(index, filtered: true, with_snippets: false) ⇒ Object 



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
 
# File 'lib/solargraph/code_map.rb', line 150

def suggest_at index, filtered: true, with_snippets: false
  node = node_at(index - 2)
  return [] if string_at?(index)
  result = []
  phrase = phrase_at(index)
  signature = get_signature_at(index)
  if (@code[index - 1] == '.')
    type = infer(node_at(index - 2))
    return @api_map.get_instance_methods(type) unless type.nil?
  end
  if signature.start_with?('@')
    parts = signature.split('.')
    var = parts.shift
    if parts.length > 0 or signature.end_with?('.')
      result = []
      ns = namespace_at(index)
      scope = :class
      node = parent_node_from(index, :def, :defs, :class, :module)
      scope = :instance if !node.nil? and node.type == :def
      obj = @api_map.infer_instance_variable(var, ns, scope)
      type = @api_map.infer_signature_type(parts.join('.'), obj, scope: :instance)
      result = @api_map.get_instance_methods(type) unless type.nil?
    else
      result = get_instance_variables_at(index)
    end
  elsif phrase.start_with?('$')
    result += @api_map.get_global_variables
  elsif phrase.start_with?(':') and !phrase.start_with?('::')
    # TODO: It's a symbol. Nothing to do for now.
    return []
  elsif phrase.include?('::')
    parts = phrase.split('::', -1)
    ns = parts[0..-2].join('::')
    if parts.last.include?('.')
      ns = parts[0..-2].join('::') + '::' + parts.last[0..parts.last.index('.')-1]
      result = @api_map.get_methods(ns)
    else
      result = @api_map.namespaces_in(ns)
    end
  elsif signature.include?('.')
    result = resolve_signature_at @code[0, index].rindex('.')
  else
    current_namespace = namespace_at(index)
    parts = current_namespace.to_s.split('::')
    result += get_snippets_at(index) if with_snippets
    result += get_local_variables_and_methods_at(index)
    result += ApiMap.get_keywords(without_snippets: with_snippets)
    while parts.length > 0
      ns = parts.join('::')
      result += @api_map.namespaces_in(ns)
      parts.pop
    end
    result += @api_map.namespaces_in('')
    result += @api_map.get_instance_methods('Kernel')
    unless @filename.nil? or @api_map.yardoc_has_file?(@filename)
      m = @code.match(/# +@bind \[([a-z0-9_:]*)/i)
      unless m.nil?
        @api_map.get_instance_methods(m[1])
      end
    end
  end
  result = reduce_starting_with(result, word_at(index)) if filtered
  result.uniq{|s| s.path}
end

#tree_at(index) ⇒ Object 



78
79
80
81
82
83
 
# File 'lib/solargraph/code_map.rb', line 78

def tree_at(index)
  arr = []
  arr.push @node
  inner_node_at(index, @node, arr)
  arr
end

#word_at(index) ⇒ Object 



131
132
133
134
135
136
137
138
139
140
141
142
 
# File 'lib/solargraph/code_map.rb', line 131

def word_at index
  word = ''
  cursor = index - 1
  while cursor > -1
    char = @code[cursor, 1]
    break if char.nil? or char == ''
    break unless char.match(/[a-z0-9_]/i)
    word = char + word
    cursor -= 1
  end
  word
end