Class: BOAST::Index

Inherits:
Expression show all
Defined in:
lib/BOAST/Index.rb

Instance Attribute Summary collapse

Attributes inherited from Expression

#operand1, #operand2, #operator

Instance Method Summary collapse

Methods inherited from Expression

#to_s_base

Methods included from Functor

extended

Methods included from TypeTransition

#get_transition, #set_transition, #transition

Methods included from Inspectable

#inspect

Methods included from Arithmetic

#!, #!=, #*, #+, #-, #-@, #/, #<, #<=, #==, #===, #>, #>=, #address, #and, #components, #dereference, #or

Methods included from PrivateStateAccessor

private_boolean_state_accessor, private_state_accessor

Constructor Details

#initialize(source, indexes) ⇒ Index

Returns a new instance of Index.



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# File 'lib/BOAST/Index.rb', line 7

def initialize(source, indexes)
  @source = source
  @indexes = indexes
end

Instance Attribute Details

#indexes ⇒ Object (readonly)

Returns the value of attribute indexes.



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# File 'lib/BOAST/Index.rb', line 5

def indexes
  @indexes
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File 'lib/BOAST/Index.rb', line 4

def source
  @source
end

Instance Method Details

#pr ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 130

def pr
  s=""
  s += indent
  s += to_s
  s += ";" if [C, CL, CUDA].include?( lang )
  output.puts s
  return self
end

#to_s ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 17

def to_s
  if get_replace_constants then
    begin
      const = @source.constant
      indxs = @indexes.reverse
      dims = @source.dimension.reverse
      (0...dims.length).each { |indx|
        dim = dims[indx]
        s = "#{indxs[indx]}"
        if dim.val2 then
          s += " - (#{dim.val1})"
        elsif 0 != get_array_start then
          s += " - (#{get_array_start})"
        end
        ind = eval(s)
        ind = ind.to_i
        const = const[ind]
      }
      return "#{const}#{@source.type.suffix}"
    rescue Exception => e
    end
  end
  return to_s_fortran if lang == FORTRAN
  return to_s_c if [C, CL, CUDA].include?( lang )
end

#to_s_c ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 123

def to_s_c
  return to_s_texture if @source.texture
  sub = to_s_c_reversed
  s = "#{@source}[" + sub + "]"
  return s
end

#to_s_c_reversed ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 95

def to_s_c_reversed
  indxs = @indexes.reverse
  dims = @source.dimension.reverse
  ss = nil
  (0...dims.length).each { |indx|
    s = ""
    dim = dims[indx]
    s += "#{indxs[indx]}"
    if dim.val2 then
      s += " - (#{dim.val1})"
    elsif 0 != get_array_start then
      s += " - (#{get_array_start})"
    end
    if ss then
      if dim.size then
        s += " + (#{dim.size}) * "
      elsif dim.val2 then
        s += " + (#{dim.val2} - (#{dim.val1}) + 1) * "
      else
        raise "Unkwown dimension size!"
      end
      s += "(#{ss})"
    end
    ss = s
  }
  return ss
end

#to_s_fortran ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 43

def to_s_fortran
  s = ""
  s += "#{@source}(#{@indexes.join(", ")})"
  return s
end

#to_s_texture ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 49

def to_s_texture
  raise "Unsupported language #{lang} for texture!" if not [CL, CUDA].include?( lang )
  raise "Write is unsupported for textures!" if not ( @source.constant or @source.direction == :in )
  dim_number = 1
  if @source.dimension then
    dim_number == @source.dimension.size
  end
  raise "Unsupported number of dimension: #{dim_number}!" if dim_number > 3
  s = ""
  if lang == CL then
    s += "as_#{@source.type.decl}("
    s += "read_imageui(#{@source}, #{@source.sampler}, "
    if dim_number == 1 then
      s += "int2(#{@indexes[0]},0)"
    else
      if dim_number == 2 then
        s += "int2("
      else
        s += "int3("
      end
      s += "#{@indexes.join(", ")})"
    end
    s += ")"
    if @source.type.size == 4 then
      s += ".x"
    elsif @source.type.size == 8 then
      s += ".xy"
    end
    s += ")"
  else
    s += "tex#{dim_number}Dfetch(#{@source},"
    if dim_number == 1 then
      s += "#{@indexes[0]}"
    else
      if dim_number == 2 then
        s += "int2("
      else
        s += "int3("
      end
      s += "#{@indexes.join(", ")})"
    end
    s += ")"
  end
  return s
end

#to_var ⇒ Object 



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# File 'lib/BOAST/Index.rb', line 12

def to_var
  var = @source.copy("#{self}", :const => nil, :constant => nil, :dim => nil, :dimension => nil, :direction => nil, :dir => nil)
  return var
end