Class: RubyHDL::High::Select

Inherits:
Expression show all
Defined in:
lib/HDLRuby/std/sequencer_sw.rb

Overview

Describes the software implementation of an select operation.

Instance Attribute Summary

Attributes inherited from Expression

#type

Instance Method Summary collapse

Methods inherited from Expression

#<=, #[], #heach, #mux, #sdownto, #seach, #stimes, #supto, #to_expr, #to_value

Methods included from HEnumerable

#hall?, #hany?, #hchain, #hchunk, #hchunk_while, #hcompact, #hcount, #hcycle, #hdrop, #hdrop_while, #heach_cons, #heach_entry, #heach_range, #heach_slice, #heach_with_index, #heach_with_object, #hfind, #hfind_index, #hfirst, #hflat_map, #hgrep, #hgrep_v, #hgroup_by, #hinclude?, #hinject, #hlazy, #hmap, #hmax, #hmax_by, #hmin, #hmin_by, #hminmax, #hminmax_by, #hnone?, #hone?, #hpartition, #hreduce, #hreject, #hreverse_each, #hselect, #hslice_after, #hslice_before, #hslice_when, #hsort, #hsort_by, #hsum, #htake, #htake_while, #htally, #hto_a, #hto_h, #huniq, #hzip

Constructor Details

#initialize(type, operator, sel, *choices) ⇒ Select

Create a new select operation with +type+ data type, selection operand +sel+ and possible choices +choices+.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 2507

def initialize(type,operator,sel,*choices)
  super(type)
  @sel = sel.to_expr
  @choices = choices.map(&:to_expr)
end

Instance Method Details

#to_c ⇒ Object

Convert to C code.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 2523

def to_c
  # return "switch(#{@sel.to_c}) {\n" +
  #   @choices.map.with_index do |choice,i|
  #     "case #{i}:\n#{choice.to_c}\nbreak;"
  #   end.join("\n") + "\n}"
  selc = @sel.to_c
  return @choices.map.with_index do |choice, i|
    "#{selc} == #{i} ? #{choice} : "
  end.join + "0"
end

#to_python(l = "") ⇒ Object

Convert to Python code.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 2535

def to_python(l = "")
  # return "\n#{l}match #{@sel.to_python}:\n" +
  #   @choices.map.with_index do |choice,i|
  #     "#{l}  case #{i}:\n    #{choice.to_python(l + "  ")}\n"
  #   end.join 
  return "[" + @choices.map(&:to_python) + "][#{@sel.to_python}]"
end

#to_ruby ⇒ Object

Convert to Ruby code.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 2514

def to_ruby
  # return "\ncase(#{@sel.to_ruby}) ; " +
  #   @choices.map.with_index do |choice,i|
  #     "when #{i} ; #{choice.to_ruby} ; "
  #   end.join + "end\n"
  return "[" + @choices.map(&:to_ruby) + "][#{@sel.to_ruby}]"
end

#to_tf(l = "") ⇒ Object

Convert to TensorFlow code.



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# File 'lib/HDLRuby/std/sequencer_sw.rb', line 2544

def to_tf(l = "")
  # return "tf.switch_case(tf.cast(#{@sel.to_tf},tf.int32)," +
  #   "\nbranch_fns={" +
  #   @choices.map.with_index do |choice,i|
  #     (i < @choices.size-1) ? 
  #       "\n#{i}: lambda: #{choice.to_tf(l + "  ")}," :
  #       "\n#{i}: lambda: #{choice.to_tf(l + "  ")}},"
  #   end.join + ")"
  return "tf.constant([" + @choices.map(&:to_python) + "])[#{@sel.to_python}]"
end