Class: RubyHDL::High::TypeTuple

Inherits:
Type
  • Object
show all
Defined in:
lib/HDLRuby/std/sequencer_sw.rb

Overview

Describes a tuple type.

Instance Method Summary collapse

Methods inherited from Type

#[], #binary, #comp_operator, #constant, #define_operator, #define_operator_with_context, #each_overload, #fixed?, #float?, #hierarchical?, #htype?, #inner, #leaf?, #left, #max, #min, #name=, #range?, #register, #right, #signed?, #struct?, #to_c, #to_c_init, #to_type, #to_vector, #typedef, #unary, #unsigned?, #vector?

Methods included from HDLRuby::Tprocess

#&, #*, #+, #+@, #-@, #/, #<<, #==, #abs, #lr, #make, #resolve, #slice, #~

Constructor Details

#initialize(name, direction, *content) ⇒ TypeTuple

Creates a new tuple type named +name+ width +direction+ and whose sub types are given by +content+.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1331

def initialize(name,direction,*content)
  # Initialize the type.
  super(name)

  # Set the direction.
  @direction = direction.to_sym
  unless [:little, :big].include?(@direction)
    raise AnyError, "Invalid direction for a type: #{direction}"
  end

  # Check and set the content.
  content.each do |sub|
    unless sub.is_a?(Type) then
      raise AnyError, "Invalid class for a type: #{sub.class}"
    end
  end
  @types = content
end

Instance Method Details

#add_type(type) ⇒ Object

Adds a sub +type+.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1386

def add_type(type)
  unless type.is_a?(Type) then
    raise AnyError, 
      "Invalid class for a type: #{type.class} (#{type})"
  end
  @types << type
end

#base ⇒ Object

Gets the base type.

NOTE: only valid if the tuple is regular (i.e., all its sub types are identical)



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1473

def base
  if regular? then
    # Regular tuple, return the type of its first element.
    return @types[0]
  else
    raise AnyError, "No base type for type #{self}"
  end
end

#base? ⇒ Boolean

Tells if the type has a base.

NOTE: only if the tuple is regular (i.e., all its sub types are identical)

Returns:

  • (Boolean) 


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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1465

def base?
  return regular?
end

#direction ⇒ Object

Get the direction of the type, little or big endian.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1444

def direction
  return @direction
end

#each(&ruby_block) ⇒ Object

Iterates over the sub name/type pair.

Returns an enumerator if no ruby block is given.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1397

def each(&ruby_block)
  # No ruby block? Return an enumerator.
  return to_enum(:each) unless ruby_block
  # A ruby block? Apply it on each sub name/type pair.
  @types.each(&ruby_block)
end

#each_type(&ruby_block) ⇒ Object

Iterates over the sub types.

Returns an enumerator if no ruby block is given.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1407

def each_type(&ruby_block)
  # No ruby block? Return an enumerator.
  return to_enum(:each_type) unless ruby_block
  # A ruby block? Apply it on each sub type.
  @types.each(&ruby_block)
end

#each_type_deep(&ruby_block) ⇒ Object Also known as: each_deep

Iterates over the types deeply if any.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1415

def each_type_deep(&ruby_block)
  # No ruby block? Return an enumerator.
  return to_enum(:each_type_deep) unless ruby_block
  # A ruby block? First apply it to current.
  ruby_block.call(self)
  # And recurse on the sub types.
  @types.each { |type| type.each_type_deep(&ruby_block) }
end

#eql?(obj) ⇒ Boolean

Comparison for hash: structural comparison.

Returns:

  • (Boolean) 


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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1351

def eql?(obj)
  # # General type comparison.
  # return false unless super(obj)
  return false unless obj.is_a?(TypeTuple)
  # Specific comparison.
  idx = 0
  obj.each_type do |type|
    return false unless @types[idx].eql?(type)
    idx += 1
  end
  return false unless idx == @types.size
  return true
end

#equivalent?(type) ⇒ Boolean

Tell if +type+ is equivalent to current type.

NOTE: type can be compatible while not being equivalent, please refer to hruby_types.rb for type compatibility.

Returns:

  • (Boolean) 


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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1486

def equivalent?(type)
  return (type.is_a?(TypeTuple) and
          !@types.zip(type.types).index {|t0,t1| !t0.equivalent?(t1) })
end

#get_all_types ⇒ Object

Gets an array containing all the syb types.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1376

def get_all_types
  return @types.clone
end

#get_type(index) ⇒ Object

Gets a sub type by +index+.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1381

def get_type(index)
  return @types[index.to_i]
end

#hash ⇒ Object

Hash function.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1366

def hash
  return [super,@types].hash
end

#range ⇒ Object

Gets the range of the type.

NOTE: only valid if the tuple is regular (i.e., all its sub types are identical)



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1452

def range
  if regular? then
    # Regular tuple, return its range as if it was an array.
    return 0..@types.size-1
  else
    raise AnyError, "No range for type #{self}"
  end
end

#regular? ⇒ Boolean

Tell if the tuple is regular, i.e., all its sub types are equivalent.

NOTE: empty tuples are assumed not to be regular.

Returns:

  • (Boolean) 


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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1429

def regular?
  return false if @types.empty?
  t0 = @types[0]
  @types[1..-1].each do |type|
    return false unless t0.equivalent?(type)
  end
  return true
end

#types? ⇒ Boolean

Tells if the type has sub types.

Returns:

  • (Boolean) 


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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1371

def types?
  return true
end

#width ⇒ Object

Gets the bitwidth.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 1439

def width
  return @types.reduce(0) { |sum,type| sum + type.width }
end