Class: CastOff::Compiler::SimpleIR::TypeContainer

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/cast_off/compile/ir/operand.rb

Direct Known Subclasses

ConstWrapper, Literal, Variable

Constant Summary collapse

FloatWrapper =

unboxing end ###

ClassWrapper.new(Float, true)
FixnumWrapper = 
ClassWrapper.new(Fixnum, true)

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util

#bug, #dlog, #todo, #vlog

Constructor Details

#initialize ⇒ TypeContainer

ignore に入っていたら @types に加えないannotation に入っていたら dynamic にするときに、annotation で指定された型にする, ignore に含まれているものは加えない



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# File 'lib/cast_off/compile/ir/operand.rb', line 24

def initialize()
  @types = []
  @state = :undefined
  @annotation = []
  @ignore = []
  @unboxing_state = :unboxed
  @negative_cond_value = false
end

Instance Attribute Details

#state ⇒ Object (readonly)

Returns the value of attribute state.



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# File 'lib/cast_off/compile/ir/operand.rb', line 13

def state
  @state
end

#types ⇒ Object (readonly)

Returns the value of attribute types.



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# File 'lib/cast_off/compile/ir/operand.rb', line 13

def types
  @types
end

Instance Method Details

#box ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 53

def box()
  case @unboxing_state
  when :unboxed
    @unboxing_state = :boxed
    return true
  when :boxed
    return false
  end
  bug()
end

#boxed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 64

def boxed?
  @unboxing_state == :boxed
end

#boxed_form ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 72

def boxed_form()
  case @unboxing_state
  when :boxed
    return self.to_s
  when :unboxed
    bug() unless can_unbox?
    case @types.first
    when FixnumWrapper
      return "LONG2FIX(#{self.to_s})"
    when FloatWrapper
      return "DBL2NUM(#{self.to_s})"
    end
  end
  bug()
end

#can_unbox? ⇒ Boolean

unboxing begin ###

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 34

def can_unbox?
  if instance_of?(LocalVariable) || instance_of?(TmpVariable) || instance_of?(Literal)
    if dynamic? || @types.size != 1
      false
    else
      bug() unless @types[0].instance_of?(ClassWrapper)
      case @types[0]
      when FloatWrapper, FixnumWrapper
        true
      else
        false
      end
    end
  else
    # ConstWrapper, Self, Pointer, Argument, TmpBuffer
    false
  end
end

#class_exact? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 141

def class_exact?
  bug()
end

#declare ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 109

def declare()
  case declare_class()
  when :double
    return 'double'
  when :long
    return 'long'
  when :VALUE
    return 'VALUE'
  end
  bug()
end

#declare_class ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 91

def declare_class()
  case @unboxing_state
  when :unboxed
    bug() if dynamic?
    bug() unless @types.size == 1
    c = @types[0]
    case c
    when FloatWrapper
      return :double
    when FixnumWrapper
      return :long
    end
  when :boxed
    return :VALUE
  end
  bug()
end

#dynamic? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 206

def dynamic?()
  @state == :dynamic
end

#is_also(t) ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 173

def is_also(t)
  t = convert(t)
  return false if @ignore.include?(t)
  case @state
  when :undefined
    @state = :initialized
    bug() unless @types.empty?
    @types << t
    return true
  when :initialized
    bug() if @types.empty?
    if @types.include?(t)
      return false
    else
      @types << t
      return true
    end
  when :static
    bug() if @types.empty?
    bug() unless @types.include?(t)
    return false
  when :dynamic
    return false
  else
    bug()
  end
  bug()
end

#is_also?(c) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 271

def is_also?(c)
  case c
  when Class, ClassWrapper
    return is_also_class(c)
  end
  bug()
end

#is_annotated(types) ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 249

def is_annotated(types)
  # 代入の対象となるような変数(local, instance, class, global variable)は、
  # static ではなく annotated とする。
  # initialized にしちゃうと、dynamic と union したときに、dynamic になってしまうのがもどかしい。
  bug() unless @state == :undefined
  bug() unless @annotation.empty?
  bug() unless @ignore.empty?
  bug() if types.empty?
  @annotation = types.map{|t| convert(t)}
  @annotation.freeze()
end

#is_class_exact ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 145

def is_class_exact()
  bug()
end

#is_dynamic ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 210

def is_dynamic()
  return false if @state == :dynamic
  return false if @state == :static
  if annotated?
    if (@annotation - @ignore - @types).empty?
      return false
    else
      @state = :initialized
      @types |= (@annotation - @ignore)
      return true
    end
  else
    @state = :dynamic
    return true
  end
  bug()
end

#is_just?(c) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 261

def is_just?(c)
  case c
  when Class, ClassWrapper
    return is_just_class(c)
  when Array
    return is_just_classes(c)
  end
  bug()
end

#is_negative_cond_value ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 334

def is_negative_cond_value
  @negative_cond_value = true
end

#is_not(types) ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 159

def is_not(types)
  bug() if @state == :static
  bug() unless (@types & @ignore).empty?
  bug() if types.empty?
  types = types.map{|t| convert(t)}
  if (types - @ignore).empty?
    false
  else
    @ignore |= types
    @types  -= types
    true
  end
end

#is_static(types) ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 232

def is_static(types)
  bug() if types.empty?
  types = types.map{|t| convert(t)}
  bug() unless (@ignore & types).empty?
  case @state
  when :undefined
    bug() unless @types.empty?
    @types = types
    @state = :static
    return true
  when :static
    bug() unless @types == types
    return false
  end
  bug()
end

#not_initialized ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 153

def not_initialized()
  # @ignore のせいで :undefined になっているものとしか交わらなかったため、initialize されなかったものがある。
  # そのため、@ignore が空のときに、ここに来る場合がある。
  @state = :dynamic
end

#reset ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 149

def reset()
  bug()
end

#static? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 228

def static?()
  @state == :static
end

#to_debug_string ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 125

def to_debug_string()
  "#{self}(#{dynamic? ? 'dynamic' : @types.join(", ")})"
end

#to_name ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 121

def to_name()
  bug()
end

#to_s ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 129

def to_s()
  case declare_class()
  when :double
    return "#{to_name()}_Float"
  when :long
    return "#{to_name()}_Fixnum"
  when :VALUE
    return to_name()
  end
  bug()
end

#unboxed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 68

def unboxed?
  @unboxing_state == :unboxed
end

#undefined? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/operand.rb', line 202

def undefined?()
  @state == :undefined
end

#union(v) ⇒ Object 



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# File 'lib/cast_off/compile/ir/operand.rb', line 279

def union(v)
  bug() if (v.types + @types).find{|t| not t.is_a?(ClassWrapper)}
  union_types = v.types - @ignore
  case @state
  when :undefined
    bug() unless @types.empty?
    case v.state
    when :undefined
      return false
    when :initialized, :static
      return false if union_types.empty?
      @state = :initialized
      @types |= union_types
      return true
    when :dynamic
      return is_dynamic()
    else
      bug()
    end
  when :initialized
    bug() if @types.empty?
    case v.state
    when :undefined
      return false
    when :initialized, :static
      if (union_types - @types).empty?
        return false
      else
        @types |= union_types
        return true
      end
    when :dynamic
      return is_dynamic()
    else
      bug()
    end
  when :static
    bug() if @types.empty?
    case v.state
    when :undefined, :dynamic
      return false
    when :initialized, :static
      bug() unless (union_types - @types).empty? || negative_cond_value?
      return false
    else
      bug()
    end
  when :dynamic
    return false
  else
    bug()
  end
  bug()
end