LCOV - code coverage report
Current view: directory - js/src - jsoplengen.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 27 19 70.4 %
Date: 2012-06-02 Functions: 1 1 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  * vim: set sw=4 ts=8 et tw=80:
       3                 :  *
       4                 :  * ***** BEGIN LICENSE BLOCK *****
       5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       6                 :  *
       7                 :  * The contents of this file are subject to the Mozilla Public License Version
       8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       9                 :  * the License. You may obtain a copy of the License at
      10                 :  * http://www.mozilla.org/MPL/
      11                 :  *
      12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      14                 :  * for the specific language governing rights and limitations under the
      15                 :  * License.
      16                 :  *
      17                 :  * The Original Code is String Switch Generator for JavaScript Keywords,
      18                 :  * released 2005-12-09.
      19                 :  *
      20                 :  * The Initial Developer of the Original Code is
      21                 :  * Igor Bukanov.
      22                 :  * Portions created by the Initial Developer are Copyright (C) 2005-2006
      23                 :  * the Initial Developer. All Rights Reserved.
      24                 :  *
      25                 :  * Contributor(s):
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      29                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : #include <stdio.h>
      42                 : #include <stdlib.h>
      43                 : #include <string.h>
      44                 : 
      45                 : static const struct {
      46                 :     const char  *name;
      47                 :     int         length;
      48                 : } pairs[] = {
      49                 : #define OPDEF(op,val,name,token,length,nuses,ndefs,prec,format)               \
      50                 :     { #op, length } ,
      51                 : #include "jsopcode.tbl"
      52                 : #undef OPDEF
      53                 : };
      54                 : 
      55                 : int
      56               1 : main(int argc, char **argv)
      57                 : {
      58                 :     FILE *fp;
      59                 :     size_t maxNameWidth, i, nameWidth, tabStop;
      60                 :     int lengthGap;
      61                 : 
      62                 :     static const char prefix[] = "#define ";
      63                 :     static const char suffix[] = "_LENGTH";
      64                 :     static const size_t tabWidth = 8;
      65                 :     static const size_t prefixWidth = sizeof(prefix) - 1;
      66                 :     static const size_t suffixWidth = sizeof(suffix) - 1;
      67                 : 
      68               1 :     if (argc != 2) {
      69               0 :         fputs("Bad usage\n", stderr);
      70               0 :         return EXIT_FAILURE;
      71                 :     }
      72                 : 
      73               1 :     fp = fopen(argv[1], "w");
      74               1 :     if (!fp) {
      75               0 :         perror("fopen");
      76               0 :         return EXIT_FAILURE;
      77                 :     }
      78                 :     fputs("/*\n"
      79                 :           " * Automatically generated header with JS opcode length constants.\n"
      80                 :           " *\n"
      81                 :           " * Do not edit it, alter jsopcode.tbl instead.\n"
      82                 :           " */\n",
      83               1 :           fp);
      84                 : 
      85                 :     /*
      86                 :      * Print
      87                 :      *
      88                 :      * #define name_LENGTH length
      89                 :      *
      90                 :      * with all length values aligned on the same column. The column is at the
      91                 :      * second character position after a tab-stop with the first position
      92                 :      * reserved for the minus sign of variable-length opcodes.
      93                 :      */
      94               1 :     maxNameWidth = 0;
      95             229 :     for (i = 0; i != sizeof pairs / sizeof pairs[0]; ++i) {
      96             228 :         nameWidth = strlen(pairs[i].name);
      97             228 :         if (maxNameWidth < nameWidth)
      98               6 :             maxNameWidth = nameWidth;
      99                 :     }
     100                 : 
     101               1 :     tabStop = prefixWidth + maxNameWidth + suffixWidth + 1;
     102               1 :     tabStop = (tabStop + tabWidth - 1) / tabWidth * tabWidth;
     103             229 :     for (i = 0; i != sizeof pairs / sizeof pairs[0]; ++i) {
     104             228 :         lengthGap = (int) (tabStop - prefixWidth - strlen(pairs[i].name) -
     105             228 :                            suffixWidth);
     106                 :         fprintf(fp, "%s%s%s%*c%2d\n",
     107                 :                 prefix, pairs[i].name, suffix, lengthGap, ' ',
     108             228 :                 pairs[i].length);
     109             228 :         if (ferror(fp)) {
     110               0 :             perror("fclose");
     111               0 :             exit(EXIT_FAILURE);
     112                 :         }
     113                 :     }
     114                 : 
     115               1 :     if (fclose(fp)) {
     116               0 :         perror("fclose");
     117               0 :         return EXIT_FAILURE;
     118                 :     }
     119                 : 
     120               1 :     return EXIT_SUCCESS;
     121                 : }

Generated by: LCOV version 1.7