Line data    Source code

       1              : /* valaccodeconstant.vala
       2              :  *
       3              :  * Copyright (C) 2006-2010  Jürg Billeter
       4              :  *
       5              :  * This library is free software; you can redistribute it and/or
       6              :  * modify it under the terms of the GNU Lesser General Public
       7              :  * License as published by the Free Software Foundation; either
       8              :  * version 2.1 of the License, or (at your option) any later version.
       9              : 
      10              :  * This library is distributed in the hope that it will be useful,
      11              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      12              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13              :  * Lesser General Public License for more details.
      14              : 
      15              :  * You should have received a copy of the GNU Lesser General Public
      16              :  * License along with this library; if not, write to the Free Software
      17              :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
      18              :  *
      19              :  * Author:
      20              :  *      Jürg Billeter <j@bitron.ch>
      21              :  */
      22              : 
      23              : using GLib;
      24              : 
      25              : /**
      26              :  * A constant C expression.
      27              :  */
      28          885 : public class Vala.CCodeConstant : CCodeExpression {
      29              :         /**
      30              :          * The name of this constant.
      31              :          */
      32       385776 :         public string name { get; set; }
      33              : 
      34       363597 :         public CCodeConstant (string _name) {
      35       121199 :                 name = _name;
      36              :         }
      37              : 
      38              :         const int LINE_LENGTH = 70;
      39              : 
      40        14833 :         public CCodeConstant.string (string _name) {
      41         7390 :                 assert (_name[0] == '\"');
      42              : 
      43         7390 :                 if (_name.length <= LINE_LENGTH) {
      44         7337 :                         name = _name;
      45         7337 :                         return;
      46              :                 }
      47              : 
      48           53 :                 var builder = new StringBuilder ("\"");
      49              : 
      50           53 :                 char* p = _name;
      51           53 :                 char* end = p + _name.length;
      52              : 
      53              :                 // remove quotes
      54           53 :                 p++;
      55           53 :                 end--;
      56              : 
      57           53 :                 int col = 0;
      58         6005 :                 while (p < end) {
      59         5952 :                         if (col >= LINE_LENGTH) {
      60           91 :                                 builder.append ("\" \\\n\"");
      61              :                                 col = 0;
      62              :                         }
      63         5952 :                         if (*p == '\\') {
      64          135 :                                 char* begin_of_char = p;
      65              : 
      66          135 :                                 builder.append_c (p[0]);
      67          135 :                                 builder.append_c (p[1]);
      68          135 :                                 p += 2;
      69          135 :                                 switch (p[-1]) {
      70              :                                 case 'x':
      71              :                                         // hexadecimal character
      72            0 :                                         while (p < end && p->isxdigit ()) {
      73            0 :                                                 builder.append_c (*p);
      74            0 :                                                 p++;
      75              :                                         }
      76              :                                         break;
      77              :                                 case '0':
      78              :                                 case '1':
      79              :                                 case '2':
      80              :                                 case '3':
      81              :                                 case '4':
      82              :                                 case '5':
      83              :                                 case '6':
      84              :                                 case '7':
      85              :                                         // octal character
      86            0 :                                         while (p < end && p - begin_of_char <= 3 && *p >= '0' && *p <= '7') {
      87            0 :                                                 builder.append_c (*p);
      88            0 :                                                 p++;
      89              :                                         }
      90              :                                         break;
      91              :                                 case 'n':
      92              :                                         // break line at \n
      93           48 :                                         col = LINE_LENGTH;
      94           48 :                                         break;
      95              :                                 }
      96          135 :                                 col += (int) (p - begin_of_char);
      97              :                         } else {
      98         5817 :                                 builder.append_unichar (((string) p).get_char ());
      99         5817 :                                 p += ((char*) ((string) p).next_char () - p);
     100         5817 :                                 col++;
     101              :                         }
     102              :                 }
     103              : 
     104           53 :                 builder.append_c ('"');
     105              : 
     106           53 :                 this.name = builder.str;
     107              :         }
     108              : 
     109        92526 :         public override void write (CCodeWriter writer) {
     110        92526 :                 writer.write_string (name);
     111              :         }
     112              : }