How to use create_eval_context_for_row method of NoCriteriaProvided Package

Best Inspec_ruby code snippet using NoCriteriaProvided.create_eval_context_for_row

filter.rb

Source:filter.rb Github

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...96 # for each field declared using `register_custom_property`, then instance-eval the block97 # against the struct.98 if block_given?99 # Perform the filtering.100 filtered_raw_data = filtered_raw_data.find_all { |row_as_hash| create_eval_context_for_row(row_as_hash, "").instance_eval(&block) }101 # Try to interpret the block for updating the stringification.102 src = Trace.new103 # Swallow any exceptions raised here.104 # See https://github.com/chef/inspec/issues/2929105 begin106 src.instance_eval(&block)107 rescue # rubocop: disable Lint/HandleExceptions108 # Yes, robocop, ignoring all exceptions is normally109 # a bad idea. Here, an exception just means we don't110 # understand what was in a `where` block, so we can't111 # meaningfully sytringify it. We still have a decent112 # default stringification.113 end114 new_criteria_string += Trace.to_ruby(src)115 end116 self.class.new(resource, filtered_raw_data, new_criteria_string)117 end118 def create_eval_context_for_row(*_)119 raise "#{self.class} must not be used on its own. It must be inherited "\120 "and the #create_eval_context_for_row method must be implemented. This is an internal "\121 "error and should not happen."122 end123 def resource124 resource_instance125 end126 def params127 # TODO: consider deprecating128 raw_data129 end130 def entries131 row_criteria_string = resource.to_s + criteria_string + " one entry"132 raw_data.map do |row|133 create_eval_context_for_row(row, row_criteria_string)134 end135 end136 def get_column_values(field)137 raw_data.map do |row|138 row[field]139 end140 end141 def list_fields142 @__fields_in_raw_data ||= raw_data.reduce([]) do |fields, row|143 fields.concat(row.keys).uniq144 end145 end146 def field?(proposed_field)147 # Currently we only know about a field if it is present in a at least one row of the raw data.148 # If we have no rows in the raw data, assume all fields are acceptable (and rely on failing to match on value, nil)149 return true if raw_data.empty?150 # Most resources have Symbol keys in their raw data. Some have Strings (looking at you, `shadow`).151 is_field = false152 is_field ||= list_fields.include?(proposed_field.to_s)153 is_field ||= list_fields.include?(proposed_field.to_sym)154 is_field ||= is_field_lazy?(proposed_field.to_s)155 is_field ||= is_field_lazy?(proposed_field.to_sym)156 is_field157 end158 def to_s159 resource.to_s + criteria_string160 end161 alias inspect to_s162 def populate_lazy_field(field_name, criterion)163 return unless is_field_lazy?(field_name)164 return if field_populated?(field_name)165 raw_data.each do |row|166 next if row.key?(field_name) # skip row if pre-existing data is present167 callback_for_lazy_field(field_name).call(row, criterion, self)168 end169 mark_lazy_field_populated(field_name)170 end171 def is_field_lazy?(sought_field_name)172 custom_properties_schema.values.any? do |property_struct|173 sought_field_name == property_struct.field_name && \174 property_struct.opts[:lazy]175 end176 end177 def callback_for_lazy_field(field_name)178 return unless is_field_lazy?(field_name)179 custom_properties_schema.values.find do |property_struct|180 property_struct.field_name == field_name181 end.opts[:lazy]182 end183 def field_populated?(field_name)184 @populated_lazy_columns[field_name]185 end186 def mark_lazy_field_populated(field_name)187 @populated_lazy_columns[field_name] = true188 end189 private190 def matches_float(x, y)191 return false if x.nil?192 return false if !x.is_a?(Float) && (x =~ /\A[-+]?(\d+\.?\d*|\.\d+)\z/).nil?193 x.to_f == y194 end195 def matches_int(x, y)196 return false if x.nil?197 return false if !x.is_a?(Integer) && (x =~ /\A[-+]?\d+\z/).nil?198 x.to_i == y199 end200 def matches_regex(x, y)201 return x == y if x.is_a?(Regexp)202 !x.to_s.match(y).nil?203 end204 def matches(x, y)205 x === y # rubocop:disable Style/CaseEquality206 end207 def filter_raw_data(current_raw_data, field, desired_value)208 return [] if current_raw_data.empty?209 method_ref = case desired_value210 when Float then :matches_float211 when Integer then :matches_int212 when Regexp then :matches_regex213 else :matches214 end215 assume_symbolic_keyed_data = current_raw_data.first.keys.first.is_a? Symbol216 field = assume_symbolic_keyed_data ? field.to_sym : field.to_s217 current_raw_data.find_all do |row|218 next unless row.key?(field)219 send(method_ref, row[field], desired_value)220 end221 end222 def decorate_symbols(thing)223 return thing.map { |t| decorate_symbols(t) } if thing.is_a?(Array)224 return ":" + thing.to_s if thing.is_a? Symbol225 return thing + " (String)" if thing.is_a? String226 thing227 end228 end229 class Factory230 CustomPropertyType = Struct.new(:field_name, :block, :opts)231 def initialize232 @filter_methods = %i{where entries raw_data}233 @custom_properties = {}234 register_custom_matcher(:exist?) { |table| !table.raw_data.empty? }235 register_custom_property(:count) { |table| table.raw_data.count }236 @resource = nil # TODO: this variable is never initialized237 end238 def install_filter_methods_on_resource(resource_class, raw_data_fetcher_method_name) # rubocop: disable Metrics/AbcSize, Metrics/MethodLength239 # A context in which you can access the fields as accessors240 non_block_struct_fields = @custom_properties.values.reject(&:block).map(&:field_name)241 unless non_block_struct_fields.empty?242 row_eval_context_type = Struct.new(*non_block_struct_fields.map(&:to_sym)) do243 attr_accessor :criteria_string244 attr_accessor :filter_table245 def to_s246 @criteria_string || super247 end248 end249 end250 properties_to_define = @custom_properties.map do |method_name, custom_property_structure|251 { method_name: method_name, method_body: create_custom_property_body(custom_property_structure) }252 end253 # Define the filter table subclass254 custom_properties = @custom_properties # We need a local var, not an instance var, for a closure below255 table_class = Class.new(Table) do256 # Install each custom property onto the FilterTable subclass257 properties_to_define.each do |property_info|258 define_method property_info[:method_name], &property_info[:method_body]259 end260 define_method :custom_properties_schema do261 custom_properties262 end263 # Install a method that can wrap all the fields into a context with accessors264 define_method :create_eval_context_for_row do |row_as_hash, criteria_string = ""|265 return row_eval_context_type.new if row_as_hash.nil?266 context = row_eval_context_type.new(*non_block_struct_fields.map { |field| row_as_hash[field] })267 context.criteria_string = criteria_string268 context.filter_table = self269 context270 end271 end272 # Now that the table class is defined and the row eval context struct is defined,273 # extend the row eval context struct to support triggering population of lazy fields274 # in where blocks. To do that, we'll need a reference to the table (which275 # knows which fields are populated, and how to populate them) and we'll need to276 # override the getter method for each lazy field, so it will trigger277 # population if needed. Keep in mind we don't have to adjust the constructor278 # args of the row struct; also the Struct class will already have provided...

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create_eval_context_for_row

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1 def initialize(data)2data = CSV.read('data.csv', headers: true)3 row = Row.new(row)4 eval_context = EvalContext::NoCriteriaProvided.create_eval_context_for_row(row)5 def self.create_eval_context_for_row(row)6 new(row.data)7 def initialize(data)8 def method_missing(name, *args, &block)

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create_eval_context_for_row

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1 def create_eval_context_for_row(row)2NoCriteriaProvided.new.create_eval_context_for_row(nil)3 def create_eval_context_for_row(row)4NoCriteriaProvided.new.create_eval_context_for_row(nil)5NoCriteriaProvided.new.create_eval_context_for_row(nil)6 def create_eval_context_for_row(row)7NoCriteriaProvided.new.create_eval_context_for_row(nil)8 def create_eval_context_for_row(row)9NoCriteriaProvided.new.create_eval_context_for_row(nil)10 def create_eval_context_for_row(row)11NoCriteriaProvided.new.create_eval_context_for_row(nil)12 def create_eval_context_for_row(row)13NoCriteriaProvided.new.create_eval_context_for_row(nil)14 def create_eval_context_for_row(row)15NoCriteriaProvided.new.create_eval_context_for_row(nil)16 def create_eval_context_for_row(row)17NoCriteriaProvided.new.create_eval_context_for_row(nil)18 def create_eval_context_for_row(row)

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