Exemple #1
0
void remove_function_pointerst::fix_return_type(
  code_function_callt &function_call,
  goto_programt &dest)
{  
  // are we returning anything at all?
  if(function_call.lhs().is_nil()) return;
  
  const code_typet &code_type=
    to_code_type(ns.follow(function_call.function().type()));
  
  // type already ok?
  if(type_eq(
       function_call.lhs().type(),
       code_type.return_type(), ns))
    return;

  symbolt &tmp_symbol=new_tmp_symbol();
  tmp_symbol.type=code_type.return_type();
  tmp_symbol.location=function_call.location();

  symbol_exprt tmp_symbol_expr;
  tmp_symbol_expr.type()=tmp_symbol.type;
  tmp_symbol_expr.set_identifier(tmp_symbol.name);
  
  exprt old_lhs=function_call.lhs();
  function_call.lhs()=tmp_symbol_expr;

  goto_programt::targett t_assign=dest.add_instruction();
  t_assign->make_assignment();
  t_assign->code=code_assignt(
    old_lhs, typecast_exprt(tmp_symbol_expr, old_lhs.type()));
}
Exemple #2
0
void goto_convertt::convert_function_call(
  const code_function_callt &function_call,
  goto_programt &dest)
{
  do_function_call(
    function_call.lhs(),
    function_call.function(),
    function_call.arguments(),
    dest);
}
Exemple #3
0
void remove_function_pointerst::fix_argument_types(
  code_function_callt &function_call)
{
  const code_typet &code_type=
    to_code_type(ns.follow(function_call.function().type()));

  const code_typet::parameterst &function_parameters=
    code_type.parameters();

  code_function_callt::argumentst &call_arguments=
    function_call.arguments();

  for(unsigned i=0; i<function_parameters.size(); i++)
  {
    if(i<call_arguments.size())
    {
      if(!type_eq(call_arguments[i].type(),
                  function_parameters[i].type(), ns))
      {
        call_arguments[i].make_typecast(function_parameters[i].type());
      }
    }
  }
}
Exemple #4
0
std::string expr2javat::convert_code_function_call(
  const code_function_callt &src,
  unsigned indent)
{
  if(src.operands().size()!=3)
  {
    unsigned precedence;
    return convert_norep(src, precedence);
  }

  std::string dest=indent_str(indent);

  if(src.lhs().is_not_nil())
  {
    unsigned p;
    std::string lhs_str=convert(src.lhs(), p);

    // TODO: ggf. Klammern je nach p
    dest+=lhs_str;
    dest+='=';
  }

  const code_typet &code_type=
    to_code_type(src.function().type());

  bool has_this=code_type.has_this() &&
                !src.arguments().empty();

  if(has_this)
  {
    unsigned p;
    std::string this_str=convert(src.arguments()[0], p);
    dest+=this_str;
    dest+=" . "; // extra spaces for readability
  }

  {
    unsigned p;
    std::string function_str=convert(src.function(), p);
    dest+=function_str;
  }

  dest+='(';

  const exprt::operandst &arguments=src.arguments();

  bool first=true;

  forall_expr(it, arguments)
  {
    if(has_this && it==arguments.begin())
    {
    }
    else
    {
      unsigned p;
      std::string arg_str=convert(*it, p);

      if(first) first=false; else dest+=", ";
      // TODO: ggf. Klammern je nach p
      dest+=arg_str;
    }
  }

  dest+=");";

  return dest;
}
Exemple #5
0
void jsil_typecheckt::typecheck_function_call(
  code_function_callt &call)
{
  if(call.operands().size()!=3)
    throw "function call expected to have three operands";

  exprt &lhs=call.lhs();
  typecheck_expr(lhs);

  exprt &f=call.function();
  typecheck_expr(f);

  for(auto &arg : call.arguments())
    typecheck_expr(arg);

  // Look for a function declaration symbol in the symbol table
  if(f.id()==ID_symbol)
  {
    const irep_idt &id=to_symbol_expr(f).get_identifier();

    if(symbol_table.has_symbol(id))
    {
      symbolt &s=symbol_table.lookup(id);

      if(s.type.id()==ID_code)
      {
        code_typet &codet=to_code_type(s.type);

        for(std::size_t i=0; i<codet.parameters().size(); i++)
        {
          if(i>=call.arguments().size()) break;

          const typet &param_type=codet.parameters()[i].type();

          if(!param_type.id().empty() && param_type.is_not_nil())
          {
             // check argument's type if parameter's type is given
             make_type_compatible(call.arguments()[i], param_type, true);
          }
        }

        // if there are too few arguments, add undefined
        if(codet.parameters().size()>call.arguments().size())
        {
          for(std::size_t i=call.arguments().size();
              i<codet.parameters().size();
              ++i)
            call.arguments().push_back(
              exprt("undefined", jsil_undefined_type()));
        }

        // if there are too many arguments, remove
        while(codet.parameters().size()<call.arguments().size())
          call.arguments().pop_back();

        // check return type if exists
        if(!codet.return_type().id().empty() &&
            codet.return_type().is_not_nil())
          make_type_compatible(lhs, codet.return_type(), true);
        else make_type_compatible(lhs, jsil_any_type(), true);
      }
      else
      {
        // TODO: a symbol can be a variable evaluating to a string
        // which corresponds to a function identifier
        make_type_compatible(lhs, jsil_any_type(), true);
      }
    }
    else
    {
      // Should be function, declaration not found yet
      symbolt new_symbol;
      new_symbol.name=id;
      new_symbol.type=code_typet();
      new_symbol.mode="jsil";
      new_symbol.is_type=false;
      new_symbol.value=exprt("no-body-just-yet");

      make_type_compatible(lhs, jsil_any_type(), true);

      if(symbol_table.add(new_symbol))
        throw "failed to add expression symbol to symbol table";
    }
  }
  else
  {
    // TODO: this might be a string literal
    // which corresponds to a function identifier
    make_type_compatible(lhs, jsil_any_type(), true);
  }
}