LCOV - app.info - js/src/jsoplengen.cpp

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: | 2012-04-07 | 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