Module: Solargraph::Parser::Legacy::NodeMethods

Defined Under Namespace

Modules: DeepInference

Constant Summary collapse

NIL_NODE =
::Parser::AST::Node.new(:nil)

Class Method Summary collapse

Class Method Details

.any_splatted_call?(nodes) ⇒ Boolean

Returns:

  • (Boolean)


133
134
135
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 133

def any_splatted_call?(nodes)
  nodes.any? { |n| splatted_call?(n) }
end

.call_nodes_from(node) ⇒ Object

TODO:

Temporarily here for testing. Move to Solargraph::Parser.



138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 138

def call_nodes_from node
  return [] unless node.is_a?(::Parser::AST::Node)
  result = []
  if node.type == :block
    result.push node
    if Parser.is_ast_node?(node.children[0]) && node.children[0].children.length > 2
      node.children[0].children[2..-1].each { |child| result.concat call_nodes_from(child) }
    end
    node.children[1..-1].each { |child| result.concat call_nodes_from(child) }
  elsif node.type == :send
    result.push node
    node.children[2..-1].each { |child| result.concat call_nodes_from(child) }
  elsif [:super, :zsuper].include?(node.type)
    result.push node
    node.children.each { |child| result.concat call_nodes_from(child) }
  elsif node.type == :masgn
    # @todo We're treating a mass assignment as a call node, but the
    #   type checker still needs the logic to handle it.
    result.push node
  else
    node.children.each { |child| result.concat call_nodes_from(child) }
  end
  result
end

.const_nodes_from(node) ⇒ Object



113
114
115
116
117
118
119
120
121
122
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 113

def const_nodes_from node
  return [] unless Parser.is_ast_node?(node)
  result = []
  if node.type == :const
    result.push node
  else
    node.children.each { |child| result.concat const_nodes_from(child) }
  end
  result
end

.convert_hash(node) ⇒ Object



99
100
101
102
103
104
105
106
107
108
109
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 99

def convert_hash node
  return {} unless Parser.is_ast_node?(node)
  return convert_hash(node.children[0]) if node.type == :kwsplat
  return convert_hash(node.children[0]) if Parser.is_ast_node?(node.children[0]) && node.children[0].type == :kwsplat
  return {} unless node.type == :hash
  result = {}
  node.children.each do |pair|
    result[pair.children[0].children[0]] = Solargraph::Parser.chain(pair.children[1])
  end
  result
end

.drill_signature(node, signature) ⇒ Object



78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 78

def drill_signature node, signature
  return signature unless node.is_a?(AST::Node)
  if node.type == :const or node.type == :cbase
    unless node.children[0].nil?
      signature += drill_signature(node.children[0], signature)
    end
    signature += '::' unless signature.empty?
    signature += node.children[1].to_s
  elsif node.type == :lvar or node.type == :ivar or node.type == :cvar
    signature += '.' unless signature.empty?
    signature += node.children[0].to_s
  elsif node.type == :send
    unless node.children[0].nil?
      signature += drill_signature(node.children[0], signature)
    end
    signature += '.' unless signature.empty?
    signature += node.children[1].to_s
  end
  signature
end

.find_recipient_node(cursor) ⇒ Object

Parameters:



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
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 180

def find_recipient_node cursor
  return repaired_find_recipient_node(cursor) if cursor.source.repaired? && cursor.source.code[cursor.offset - 1] == '('
  source = cursor.source
  position = cursor.position
  offset = cursor.offset
  tree = if source.synchronized?
    match = source.code[0..offset-1].match(/,\s*\z/)
    if match
      source.tree_at(position.line, position.column - match[0].length)
    else
      source.tree_at(position.line, position.column)
    end
  else
    source.tree_at(position.line, position.column - 1)
  end
  prev = nil
  tree.each do |node|
    if node.type == :send
      args = node.children[2..-1]
      if !args.empty?
        return node if prev && args.include?(prev)
      else
        if source.synchronized?
          return node if source.code[0..offset-1] =~ /\(\s*\z/ && source.code[offset..-1] =~ /^\s*\)/
        else
          return node if source.code[0..offset-1] =~ /\([^\(]*\z/
        end
      end
    end
    prev = node
  end
  nil
end

.get_node_end_position(node) ⇒ Position

Parameters:

  • node (Parser::AST::Node)

Returns:



74
75
76
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 74

def get_node_end_position(node)
  Position.new(node.loc.last_line, node.loc.last_column)
end

.get_node_start_position(node) ⇒ Position

Parameters:

  • node (Parser::AST::Node)

Returns:



68
69
70
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 68

def get_node_start_position(node)
  Position.new(node.loc.line, node.loc.column)
end

.infer_literal_node_type(node) ⇒ String?

Parameters:

  • node (Parser::AST::Node)

Returns:

  • (String, nil)


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
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 39

def infer_literal_node_type node
  return nil unless node.is_a?(AST::Node)
  if node.type == :str || node.type == :dstr
    return '::String'
  elsif node.type == :array
    return '::Array'
  elsif node.type == :hash
    return '::Hash'
  elsif node.type == :int
    return '::Integer'
  elsif node.type == :float
    return '::Float'
  elsif node.type == :sym
    return '::Symbol'
  elsif node.type == :regexp
    return '::Regexp'
  elsif node.type == :irange
    return '::Range'
  elsif node.type == :true || node.type == :false
    return '::Boolean'
    # @todo Support `nil` keyword in types
  # elsif node.type == :nil
  #   return 'NilClass'
  end
  nil
end

.pack_name(node) ⇒ Array<String>

Parameters:

  • node (Parser::AST::Node)

Returns:

  • (Array<String>)


19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 19

def pack_name(node)
  parts = []
  if node.is_a?(AST::Node)
    node.children.each { |n|
      if n.is_a?(AST::Node)
        if n.type == :cbase
          parts = [''] + pack_name(n)
        else
          parts += pack_name(n)
        end
      else
        parts.push n unless n.nil?
      end
    }
  end
  parts
end

.repaired_find_recipient_node(cursor) ⇒ Object



214
215
216
217
218
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 214

def repaired_find_recipient_node cursor
  cursor = cursor.source.cursor_at([cursor.position.line, cursor.position.column - 1])
  node = cursor.source.tree_at(cursor.position.line, cursor.position.column).first
  return node if node && node.type == :send
end

.returns_from(node) ⇒ Array<Parser::AST::Node>

Find all the nodes within the provided node that potentially return a value.

The node parameter typically represents a method’s logic, e.g., the second child (after the :args node) of a :def node. A simple one-line method would typically return itself, while a node with conditions would return the resulting node from each conditional branch. Nodes that follow a :return node are assumed to be unreachable. Nil values are converted to nil node types.

Parameters:

  • node (Parser::AST::Node)

Returns:

  • (Array<Parser::AST::Node>)


175
176
177
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 175

def returns_from node
  DeepInference.get_return_nodes(node).map { |n| n || NIL_NODE }
end

.splatted_call?(node) ⇒ Boolean

Returns:

  • (Boolean)


128
129
130
131
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 128

def splatted_call? node
  return false unless Parser.is_ast_node?(node)
  Parser.is_ast_node?(node.children[0]) && node.children[0].type == :kwsplat && node.children[0].children[0].type != :hash
end

.splatted_hash?(node) ⇒ Boolean

Returns:

  • (Boolean)


124
125
126
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 124

def splatted_hash? node
  Parser.is_ast_node?(node.children[0]) && node.children[0].type == :kwsplat
end

.unpack_name(node) ⇒ String

Parameters:

  • node (Parser::AST::Node)

Returns:

  • (String)


13
14
15
# File 'lib/solargraph/parser/legacy/node_methods.rb', line 13

def unpack_name(node)
  pack_name(node).join("::")
end