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# frozen_string_literal: true
module GraphQL
module Analysis
module AST
class FieldUsage < Analyzer
def initialize(query)
super
@used_fields = Set.new
@used_deprecated_fields = Set.new
@used_deprecated_arguments = Set.new
@used_deprecated_enum_values = Set.new
end
def on_leave_field(node, parent, visitor)
field_defn = visitor.field_definition
field = "#{visitor.parent_type_definition.graphql_name}.#{field_defn.graphql_name}"
@used_fields << field
@used_deprecated_fields << field if field_defn.deprecation_reason
arguments = visitor.query.arguments_for(node, field_defn)
# If there was an error when preparing this argument object,
# then this might be an error or something:
if arguments.respond_to?(:argument_values)
extract_deprecated_arguments(arguments.argument_values)
end
end
def result
{
used_fields: @used_fields.to_a,
used_deprecated_fields: @used_deprecated_fields.to_a,
used_deprecated_arguments: @used_deprecated_arguments.to_a,
used_deprecated_enum_values: @used_deprecated_enum_values.to_a,
}
end
private
def extract_deprecated_arguments(argument_values)
argument_values.each_pair do |_argument_name, argument|
if argument.definition.deprecation_reason
@used_deprecated_arguments << argument.definition.path
end
next if argument.value.nil?
argument_type = argument.definition.type
if argument_type.non_null?
argument_type = argument_type.of_type
end
if argument_type.kind.input_object?
extract_deprecated_arguments(argument.value.arguments.argument_values) # rubocop:disable Development/ContextIsPassedCop -- runtime args instance
elsif argument_type.kind.enum?
extract_deprecated_enum_value(argument_type, argument.value)
elsif argument_type.list?
inner_type = argument_type.unwrap
case inner_type.kind
when TypeKinds::INPUT_OBJECT
argument.value.each do |value|
extract_deprecated_arguments(value.arguments.argument_values) # rubocop:disable Development/ContextIsPassedCop -- runtime args instance
end
when TypeKinds::ENUM
argument.value.each do |value|
extract_deprecated_enum_value(inner_type, value)
end
else
# Not a kind of input that we track
end
end
end
end
def extract_deprecated_enum_value(enum_type, value)
enum_value = @query.warden.enum_values(enum_type).find { |ev| ev.value == value }
if enum_value&.deprecation_reason
@used_deprecated_enum_values << enum_value.path
end
end
end
end
end
end
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