Class: GraphQL::Upgrader::Member::FieldFinder

Inherits:
Parser::AST::Processor
  • Object
show all
Defined in:
lib/graphql/upgrader/member.rb

Constant Summary collapse

DEFINITION_METHODS =

These methods are definition DSLs which may accept a block, each of these definitions is passed for transformation in its own right. field and connection take priority. In fact, they upgrade their own arguments, so those upgrades turn out to be no-ops.

[:field, :connection, :input_field, :return_field, :argument]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initializeFieldFinder

Returns a new instance of FieldFinder.


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# File 'lib/graphql/upgrader/member.rb', line 901

def initialize
  # Pairs of `{ { method_name => { name => [start, end] } }`,
  # since fields/arguments are unique by name, within their category
  @locations = Hash.new { |h,k| h[k] = {} }
end

Instance Attribute Details

#locationsObject (readonly)

Returns the value of attribute locations.


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# File 'lib/graphql/upgrader/member.rb', line 899

def locations
  @locations
end

Instance Method Details

#add_location(send_node:, source_node:) ⇒ Object

Parameters:

  • send_node (node)

    The node which might be a field call, etc

  • source_node (node)

    The node whose source defines the bounds of the definition (eg, the surrounding block)


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# File 'lib/graphql/upgrader/member.rb', line 909

def add_location(send_node:,source_node:)
  receiver_node, method_name, *arg_nodes = *send_node
  # Implicit self and one of the recognized methods
  if receiver_node.nil? && DEFINITION_METHODS.include?(method_name)
    name = arg_nodes[0]
    # This field may have already been added because
    # we find `(block ...)` nodes _before_ we find `(send ...)` nodes.
    if @locations[method_name][name].nil?
      starting_idx = source_node.loc.expression.begin.begin_pos
      ending_idx = source_node.loc.expression.end.end_pos
      @locations[method_name][name] = [starting_idx, ending_idx]
    end
  end
end

#on_block(node) ⇒ Object


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# File 'lib/graphql/upgrader/member.rb', line 924

def on_block(node)
  send_node, _args_node, _body_node = *node
  add_location(send_node: send_node, source_node: node)
  super(node)
end

#on_send(node) ⇒ Object


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# File 'lib/graphql/upgrader/member.rb', line 930

def on_send(node)
  add_location(send_node: node, source_node: node)
  super(node)
end