TAO/TAO_IDL/be/be_identifier_helper.cpp

   1 /* -*- c++ -*- */
   2 #include "be_identifier_helper.h"
   3 #include "be_type.h"
   4
   5 #include "utl_identifier.h"
   6 #include "utl_string.h"
   7 #include "fe_private.h"
   8 #include "global_extern.h"
   9
  10 ACE_CString IdentifierHelper::tmp_retval_;
  11
  12 const char *
  13 IdentifierHelper::type_name (be_type *t, be_visitor *visitor)
  14 {
  15   AST_PredefinedType *pdt = nullptr;
  16
  17   switch (t->node_type ())
  18     {
  19       case AST_Decl::NT_sequence:
  20       case AST_Decl::NT_wstring:
  21       case AST_Decl::NT_string:
  22         (void) t->accept (visitor);
  23         return "";
  24       case AST_Decl::NT_pre_defined:
  25         pdt = dynamic_cast<AST_PredefinedType*> (t);
  26
  27         switch (pdt->pt ())
  28           {
  29             case AST_PredefinedType::PT_pseudo:
  30               return t->full_name ();
  31             case AST_PredefinedType::PT_object:
  32               return "Object";
  33             case AST_PredefinedType::PT_any:
  34               return "any";
  35             case AST_PredefinedType::PT_long:
  36               return "long";
  37             case AST_PredefinedType::PT_ulong:
  38               return "unsigned long";
  39             case AST_PredefinedType::PT_longlong:
  40               return "long long";
  41             case AST_PredefinedType::PT_ulonglong:
  42               return "unsigned long long";
  43             case AST_PredefinedType::PT_short:
  44               return "short";
  45             case AST_PredefinedType::PT_ushort:
  46               return "unsigned short";
  47             case AST_PredefinedType::PT_float:
  48               return "float";
  49             case AST_PredefinedType::PT_double:
  50               return "double";
  51             case AST_PredefinedType::PT_longdouble:
  52               return "long double";
  53             case AST_PredefinedType::PT_char:
  54               return "char";
  55             case AST_PredefinedType::PT_wchar:
  56               return "wchar";
  57             case AST_PredefinedType::PT_boolean:
  58               return "boolean";
  59             case AST_PredefinedType::PT_octet:
  60               return "octet";
  61             case AST_PredefinedType::PT_void:
  62               return "void";
  63             default:
  64               break;
  65           }
  66
  67         // Not reached.
  68         return "";
  69         break;
  70       default:
  71         IdentifierHelper::tmp_retval_ = "::";
  72         IdentifierHelper::tmp_retval_ +=
  73           IdentifierHelper::orig_sn (t->name ()).c_str ();
  74         return IdentifierHelper::tmp_retval_.c_str ();
  75     }
  76 }
  77
  78 Identifier *
  79 IdentifierHelper::original_local_name (Identifier * local_name)
  80 {
  81   Identifier * id = nullptr;
  82   const char *lname = local_name->get_string ();
  83
  84   // Remove _cxx_ if:
  85   // 1. it occurs and
  86   // 2. it occurs at the beginning of the string and
  87   // 3. the rest of the string is a C++ keyword
  88   if (ACE_OS::strstr (lname, "_cxx_") == lname)
  89     {
  90       TAO_IDL_CPP_Keyword_Table cpp_key_tbl;
  91
  92       unsigned int len =
  93         static_cast<unsigned int> (ACE_OS::strlen (lname + 5));
  94
  95       const TAO_IDL_CPP_Keyword_Entry *entry =
  96         cpp_key_tbl.lookup (lname + 5, len);
  97
  98       if (entry != nullptr)
  99         {
 100           // Remove _cxx_ and assign to the Identifier variable.
 101           ACE_NEW_RETURN (id,
 102                           Identifier (lname + 5),
 103                           nullptr);
 104         }
 105     }
 106
 107   if (id == nullptr)
 108     {
 109       id = local_name->copy ();
 110     }
 111
 112   return id;
 113 }
 114
 115 ACE_CString
 116 IdentifierHelper::orig_sn (UTL_IdList * sn, bool for_idl)
 117 {
 118   ACE_CString retval;
 119   bool first = true;
 120   bool second = false;
 121   Identifier *id = nullptr;
 122
 123   for (UTL_IdListActiveIterator i (sn); !i.is_done ();)
 124     {
 125       if (!first)
 126         {
 127           retval += "::";
 128         }
 129       else if (second)
 130         {
 131           first = second = false;
 132         }
 133
 134       id =
 135         for_idl
 136           ? IdentifierHelper::original_local_name (i.item ())
 137           : i.item ()->copy ();
 138
 139       i.next ();
 140
 141       // Append the identifier.
 142       retval +=
 143         for_idl
 144           ? IdentifierHelper::try_escape (id).c_str ()
 145           : id->get_string ();
 146
 147        if (first)
 148         {
 149           if (ACE_OS::strcmp (id->get_string (), "") != 0)
 150             {
 151               // Does not start with a "".
 152               first = false;
 153             }
 154           else
 155             {
 156               second = true;
 157             }
 158         }
 159
 160       id->destroy ();
 161       delete id;
 162       id = nullptr;
 163     }
 164
 165   return retval;
 166 }
 167
 168 bool
 169 IdentifierHelper::is_idl_keyword (Identifier * local_name)
 170 {
 171   // Convert the identifier string into a
 172   // canonical (uppercase) form as a ACE_CString
 173   char *tmp = local_name->get_string ();
 174   ACE_CString ext_id (tmp);
 175   UTL_String::get_canonical_rep (ext_id);
 176
 177   return !idl_global->idl_keywords ().find (ext_id);
 178 }
 179
 180 ACE_CString
 181 IdentifierHelper::try_escape (Identifier * local_name)
 182 {
 183   ACE_CString s_local_name (local_name->get_string ());
 184
 185   if (IdentifierHelper::is_idl_keyword (local_name))
 186     {
 187       return "_" + s_local_name;
 188     }
 189   else
 190     {
 191       return s_local_name;
 192     }
 193 }