Class: CastOff::Compiler::SimpleIR::Tostring

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, #should_be_alive?

Methods inherited from CallIR

#can_not_unbox, #mark, #param_irs, #param_variables, #propergate_boxed_value, #sampling_return_value, #sampling_return_value?, #should_be_alive?, #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) ⇒ Tostring

Returns a new instance of Tostring.



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 367

def initialize(param, argc, return_value, insn, cfg)
  super(param, argc, return_value, insn, cfg)
  bug() unless @param.size() == 1
end

Instance Method Details

#harmless?(recv_p) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/call_ir.rb', line 399

def harmless?(recv_p)
  @param[0].param_value.is_just?(String)
end

#propergate_exact_class(defs) ⇒ Object 



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 377

def propergate_exact_class(defs)
  @return_value.class_exact? ? false : @return_value.is_class_exact()
end

#propergate_guard_usage ⇒ Object 



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 372

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

#side_effect? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cast_off/compile/ir/call_ir.rb', line 403

def side_effect?
  # FIXME return false when reciever class to_s method is no-side-effect.
  true
end

#to_c(params) ⇒ Object 



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# File 'lib/cast_off/compile/ir/call_ir.rb', line 381

def to_c(params)
  ret = []
  ret << super(params)
  param = param_variables()
  obj = param.shift
  if obj.is_just?(String)
    ret << "  #{@return_value} = #{obj};"
  else
    ret << "  #{@return_value} = rb_obj_as_string(#{obj});"
  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 395

def type_propergation(defs)
  @return_value.is_static([String])
end