class GraphQL::StaticValidation::FieldsWillMergeError

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 9
def initialize(kind:, field_name:)
  super(nil)

  @field_name = field_name
  @kind = kind
  @conflicts = []
  # Indexes of `@nodes`, so that `add_conflict` doesn't compare `node` with each one
  @node_ids = {}.compare_by_identity #: Hash[GraphQL::Language::Nodes::AbstractNode, bool]
  @nodes_by_location = nil #: Hash[Integer?, Hash[Integer?, Array[GraphQL::Language::Nodes::AbstractNode]]]?
end

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 34
def add_conflict(node, conflict_str)
  # Check if we already have an error for this exact node.
  # Use object identity first (fast path), then fall back to
  # value + location comparison for duplicate AST nodes.
  return if @node_ids.key?(node)

  nodes_at_line = (@nodes_by_location ||= {})[node.line] ||= {}
  nodes_at_location = nodes_at_line[node.col]
  if nodes_at_location
    # already have an error for this node
    return if nodes_at_location.any? { |n| n == node }
    nodes_at_location << node
  else
    nodes_at_line[node.col] = [node]
  end

  @node_ids[node] = true
  @nodes << node
  @conflicts << conflict_str
end

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 68
def code
  "fieldConflict"
end

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 30
def conflicts
  @conflicts.join(' or ')
end

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 20
def message
  @message || "Field '#{field_name}' has #{kind == :argument ? 'an' : 'a'} #{kind} conflict: #{conflicts}?"
end

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 26
def path
  []
end

# File lib/graphql/static_validation/rules/fields_will_merge_error.rb, line 56
def to_h
  extensions = {
    "code" => code,
    "fieldName" => field_name,
    "conflicts" => conflicts
  }

  super.merge({
    "extensions" => extensions
  })
end