Module: MaimaiNet::ModuleExt::ExtendedInspect

Extended by:
HaveClassMethods
Defined in:
lib/maimai_net/module_ext.rb

Overview

extends inspect function into customizable inspect output

Class Method Summary collapse

Instance Method Summary collapse

Methods included from HaveClassMethods

class_method, included

Class Method Details

.included(cls) ⇒ void

Note:

will not apply to modules.

This method returns an undefined value.

initializes inspect permit variables upon inclusion



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# File 'lib/maimai_net/module_ext.rb', line 169

def self.included(cls)
  super

  cls.instance_exec do
    inspect_permit_reset!
  end if Class === cls
end

Instance Method Details

#inspect ⇒ String

Returns simplified human-readable output.

Returns:

  • (String) —

    simplified human-readable output



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# File 'lib/maimai_net/module_ext.rb', line 51

def inspect
  head = '%s:%0#*x' % [
    self.class.name,
    0.size.succ << 1,
    Fiddle.dlwrap(self),
  ]

  vars = []
  all_true             = !self.class.instance_variable_defined?(:@_inspect_permit)
  if all_true then
    permit_variables   = []
    permit_expressions = []
    exclude_variables  = []
  else
    all_true          |= !self.class.instance_variable_get(:@_inspect_permit)

    permit_variables   = self.class.instance_variable_get(:@_inspect_permit_variables)
    permit_expressions = self.class.instance_variable_get(:@_inspect_permit_expressions)
    exclude_variables  = self.class.instance_variable_get(:@_inspect_permit_variable_bans)

    all_true          |= [
      permit_variables,
      exclude_variables,
      permit_expressions,
    ].all?(&:empty?)
  end

  self.instance_variables.each do |k|
    name = k.to_s[1..-1].to_sym
    value = self.instance_variable_get(k)

    next if exclude_variables.include? name

    is_permit = all_true

    unless is_permit
      is_permit |= permit_variables.include?(name)
      is_permit |= permit_expressions.any? do |expr| !!expr.call(value) end
    end

    vars << sprintf(
      '@%s=%s',
      name,
      is_permit ? value.inspect : value.class.name,
    )
  end

  '#<%s>' % [
    [head, *vars].join(' '),
  ]
end