Class: Puppet::Pops::Types::PTupleType

Inherits:
PAnyType show all
Includes:
Enumerable
Defined in:
lib/puppet/pops/types/types.rb

Constant Summary collapse

DEFAULT =
PTupleType.new(EMPTY_ARRAY)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PAnyType

#==, #assignable?, #callable?, #callable_with?, #check_self_recursion, create, #create, #kind_of_callable?, #loader, #name, new_function, #really_instance?, #roundtrip_with_string?, simple_name, #simple_name, #to_alias_expanded_s, #to_s

Methods inherited from TypedModelObject

_pcore_type, create_ptype, register_ptypes

Methods included from PuppetObject

#_pcore_all_contents, #_pcore_contents, #_pcore_init_hash, #_pcore_type, #to_s

Constructor Details

#initialize(types, size_type = nil) ⇒ PTupleType

Returns a new instance of PTupleType.



2211
2212
2213
2214
# File 'lib/puppet/pops/types/types.rb', line 2211

def initialize(types, size_type = nil)
  @types = types
  @size_type = size_type.nil? ? nil : size_type.to_size
end

Instance Attribute Details

#size_typeObject (readonly)

If set, describes min and max required of the given types - if max > size of types, the last type entry repeats



2168
2169
2170
# File 'lib/puppet/pops/types/types.rb', line 2168

def size_type
  @size_type
end

#typesObject (readonly)



2170
2171
2172
# File 'lib/puppet/pops/types/types.rb', line 2170

def types
  @types
end

Class Method Details

.register_ptype(loader, ir) ⇒ Object



2155
2156
2157
2158
2159
2160
2161
2162
2163
# File 'lib/puppet/pops/types/types.rb', line 2155

def self.register_ptype(loader, ir)
  create_ptype(loader, ir, 'AnyType',
               'types' => PArrayType.new(PTypeType::DEFAULT),
               'size_type' => {
                 KEY_TYPE => POptionalType.new(PTypeType.new(PIntegerType::DEFAULT)),
                 KEY_VALUE => nil
               }
  )
end

Instance Method Details

#accept(visitor, guard) ⇒ Object



2172
2173
2174
2175
2176
# File 'lib/puppet/pops/types/types.rb', line 2172

def accept(visitor, guard)
  super
  @size_type.accept(visitor, guard) unless @size_type.nil?
  @types.each { |elem| elem.accept(visitor, guard) }
end

#callable_args?(callable_t, guard) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean)


2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
# File 'lib/puppet/pops/types/types.rb', line 2179

def callable_args?(callable_t, guard)
  unless size_type.nil?
    raise ArgumentError, 'Callable tuple may not have a size constraint when used as args'
  end

  params_tuple = callable_t.param_types
  param_block_t = callable_t.block_type
  arg_types = @types
  arg_block_t = arg_types.last
  if arg_block_t.kind_of_callable?(true, guard)
    # Can't pass a block to a callable that doesn't accept one
    return false if param_block_t.nil?

    # Check that the block is of the right tyṕe
    return false unless param_block_t.assignable?(arg_block_t, guard)

    # Check other arguments
    arg_count = arg_types.size - 1
    params_size_t = params_tuple.size_type || PIntegerType.new(*params_tuple.size_range)
    return false unless params_size_t.assignable?(PIntegerType.new(arg_count, arg_count), guard)

    ctypes = params_tuple.types
    arg_count.times do |index|
      return false unless (ctypes[index] || ctypes[-1]).assignable?(arg_types[index], guard)
    end
    return true
  end

  # Check that tuple is assignable and that the block (if declared) is optional
  params_tuple.assignable?(self, guard) && (param_block_t.nil? || param_block_t.assignable?(PUndefType::DEFAULT, guard))
end

#eachObject

Returns Enumerator for the types if no block is given, otherwise, calls the given block with each of the types in this tuple



2218
2219
2220
2221
2222
2223
2224
# File 'lib/puppet/pops/types/types.rb', line 2218

def each
  if block_given?
    types.each { |x| yield x }
  else
    types.to_enum
  end
end

#eql?(o) ⇒ Boolean

Returns:

  • (Boolean)


2305
2306
2307
# File 'lib/puppet/pops/types/types.rb', line 2305

def eql?(o)
  self.class == o.class && @types == o.types && @size_type == o.size_type
end

#generalizeObject



2226
2227
2228
2229
2230
2231
2232
# File 'lib/puppet/pops/types/types.rb', line 2226

def generalize
  if self == DEFAULT
    DEFAULT
  else
    alter_type_array(@types, :generalize) { |altered_types| PTupleType.new(altered_types, @size_type) }
  end
end

#hashObject



2301
2302
2303
# File 'lib/puppet/pops/types/types.rb', line 2301

def hash
  @size_type.hash ^ @types.hash
end

#instance?(o, guard = nil) ⇒ Boolean

Returns:

  • (Boolean)


2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
# File 'lib/puppet/pops/types/types.rb', line 2252

def instance?(o, guard = nil)
  # The inferred type of a class derived from Array is either Runtime or Object. It's not assignable to the Tuple type.
  return false unless o.instance_of?(Array)

  if @size_type
    return false unless @size_type.instance?(o.size, guard)
  else
    return false unless @types.empty? || @types.size == o.size
  end
  index = -1
  @types.empty? || o.all? do |element|
    @types.fetch(index += 1) { @types.last }.instance?(element, guard)
  end
end

#iterable?(guard = nil) ⇒ Boolean

Returns:

  • (Boolean)


2267
2268
2269
# File 'lib/puppet/pops/types/types.rb', line 2267

def iterable?(guard = nil)
  true
end

#iterable_type(guard = nil) ⇒ Object



2271
2272
2273
# File 'lib/puppet/pops/types/types.rb', line 2271

def iterable_type(guard = nil)
  PIterableType.new(PVariantType.maybe_create(types))
end

#new_functionObject



2309
2310
2311
2312
2313
# File 'lib/puppet/pops/types/types.rb', line 2309

def new_function
  # Simply delegate to Array type and let the higher level assertion deal with
  # compliance with the Tuple type regarding the produced result.
  PArrayType.new_function(self)
end

#normalize(guard = nil) ⇒ Object



2234
2235
2236
2237
2238
2239
2240
# File 'lib/puppet/pops/types/types.rb', line 2234

def normalize(guard = nil)
  if self == DEFAULT
    DEFAULT
  else
    alter_type_array(@types, :normalize, guard) { |altered_types| PTupleType.new(altered_types, @size_type) }
  end
end

#repeat_last_rangeObject

Returns the number of accepted occurrences [min, max] of the last type in the tuple The defaults is [1,1]



2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
# File 'lib/puppet/pops/types/types.rb', line 2288

def repeat_last_range
  if @size_type.nil?
    return [1, 1]
  end

  types_size = @types.size
  from, to = @size_type.range
  min = from - (types_size-1)
  min = min <= 0 ? 0 : min
  max = to - (types_size-1)
  [min, max]
end

#resolve(loader) ⇒ Object



2242
2243
2244
2245
2246
2247
2248
2249
2250
# File 'lib/puppet/pops/types/types.rb', line 2242

def resolve(loader)
  changed = false
  rtypes = @types.map do |type|
    rtype = type.resolve(loader)
    changed ||= !rtype.equal?(type)
    rtype
  end
  changed ? self.class.new(rtypes, @size_type) : self
end

#size_rangeObject

Returns the number of elements accepted [min, max] in the tuple



2276
2277
2278
2279
2280
2281
2282
2283
# File 'lib/puppet/pops/types/types.rb', line 2276

def size_range
  if @size_type.nil?
    types_size = @types.size
    types_size == 0 ? [0, Float::INFINITY] : [types_size, types_size]
  else
    @size_type.range
  end
end