Class: CastOff::Compiler::SimpleIR::Defined

Inherits:
VMInsnIR show all
Defined in:
lib/cast_off/compile/ir/call_ir.rb

Constant Summary

Constants included from Instruction

Instruction::BlockSeparator, Instruction::BranchInstruction, Instruction::IgnoreInstruction, Instruction::JumpOrReturnInstruction, Instruction::SupportInstruction, Instruction::TypeInfoUser, Instruction::VM_CALL_ARGS_BLOCKARG_BIT, Instruction::VM_CALL_ARGS_SPLAT_BIT, Instruction::VM_CALL_FCALL_BIT, Instruction::VM_CALL_OPT_SEND_BIT, Instruction::VM_CALL_SUPER_BIT, Instruction::VM_CALL_TAILCALL_BIT, Instruction::VM_CALL_TAILRECURSION_BIT, Instruction::VM_CALL_VCALL_BIT

Instance Attribute Summary

Attributes inherited from VMInsnIR

#argv

Attributes inherited from CallIR

#argc, #result_variable, #return_value, #values, #variables, #variables_without_result

Attributes inherited from IR

#alias, #insn

Instance Method Summary collapse

Methods inherited from VMInsnIR

#dont_duplicate_if_harmless

Methods inherited from CallIR

#can_not_unbox, #mark, #param_irs, #param_variables, #propergate_boxed_value, #propergate_exact_class, #sampling_return_value, #sampling_return_value?, #unboxing_prelude

Methods included from Util

#bug, #dlog, #todo, #vlog

Methods inherited from IR

#add_sampling_variable, #alive, #alive?, #dispatch_method?, #generate_guard, #get_definition, #get_definition_str, #get_usage, #get_variable, #inlining_target?, #propergate_boxed_value, #reset, #sampling_variable, #set_info, #standard_guard_target, #unboxing_prelude, #vanish, #vanish?

Constructor Details

#initialize(param, argc, return_value, insn, cfg) ⇒ Defined

Returns a new instance of Defined.



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1047

def initialize(param, argc, return_value, insn, cfg)
  super(param, argc, return_value, insn, cfg)
  argv = insn.argv
  @defined_t = argv[0]
  sym = argv[1]
  bug() unless sym.instance_of?(Symbol)
  @id = @translator.allocate_id(sym)
  @needstr = argv[2]    # Qtrue or Qfalse
end

Instance Method Details

#harmless?(recv_p) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1117

def harmless?(recv_p)
  true
end

#propergate_guard_usage ⇒ Object 



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1057

def propergate_guard_usage()
  params = param_irs()
  params.each{|p| p.need_guard(false)}
end

#should_be_alive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1121

def should_be_alive?
  false
end

#side_effect? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1125

def side_effect?
  false
end

#to_c(params) ⇒ Object 



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1062

def to_c(params)
  ret = []
  ret << super(params)
  param = param_variables()
  val = param.pop()

  case @defined_t
  when DEFINED_IVAR
    ret << <<-EOS
  if (rb_ivar_defined(self, #{@id})) {
    #{@return_value} = #{@needstr ? 'rb_str_new2("instance-variable")' : 'Qtrue'};
  } else {
    #{@return_value} = Qnil;
  }
    EOS
  when DEFINED_GVAR
    ret << <<-EOS
  if (rb_gvar_defined(rb_global_entry(#{@id}))) {
    #{@return_value} = #{@needstr ? 'rb_str_new2("global-variable")' : 'Qtrue'};
  } else {
    #{@return_value} = Qnil;
  }
    EOS
  when DEFINED_FUNC
    ret << <<-EOS
  if (rb_method_boundp(rb_class_of(#{val}), #{@id}, 0)) {
    #{@return_value} = #{@needstr ? 'rb_str_new2("method")' : 'Qtrue'};
  } else {
    #{@return_value} = Qnil;
  }
    EOS
  when DEFINED_CONST
    ret << <<-EOS
  if (cast_off_const_defined(#{val}, #{@id})) {
    #{@return_value} = #{@needstr ? 'rb_str_new2("constant")' : 'Qtrue'};
  } else {
    #{@return_value} = Qnil;
  }
    EOS
  else
    bug()
  end

  bug() unless param.empty?
  ret.join("\n")
end

#type_propergation(defs) ⇒ Object 



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 1109

def type_propergation(defs)
  if @needstr
    @return_value.is_static([NilClass, String])
  else
    @return_value.is_static([NilClass, TrueClass])
  end
end