src/mesa/shader/slang/library/slang_version.syn

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 2005  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file slang_version.syn
  27  * slang #version directive syntax
  28  * \author Michal Krol
  29  */
  30
  31 .syntax version_directive;
  32
  33 version_directive
  34         version_directive_1 .and .loop version_directive_2;
  35 version_directive_1
  36         prior_optional_spaces .and optional_version_directive .and .true .emit $;
  37 version_directive_2
  38         prior_optional_spaces .and version_directive_body .and .true .emit $;
  39
  40 optional_version_directive
  41         version_directive_body .or .true .emit 10 .emit 1;
  42
  43 version_directive_body
  44         '#' .and optional_space .and "version" .and space .and version_number .and optional_space .and
  45         new_line;
  46
  47 version_number
  48         version_number_110;
  49
  50 version_number_110
  51         leading_zeroes .and "110" .emit 10 .emit 1;
  52
  53 leading_zeroes
  54         .loop zero;
  55
  56 zero
  57         '0';
  58
  59 space
  60     single_space .and .loop single_space;
  61
  62 optional_space
  63     .loop single_space;
  64
  65 single_space
  66     ' ' .or '\t';
  67
  68 prior_optional_spaces
  69         .loop prior_space;
  70
  71 prior_space
  72         c_style_comment_block .or cpp_style_comment_block .or space .or new_line;
  73
  74 c_style_comment_block
  75     '/' .and '*' .and c_style_comment_rest;
  76
  77 c_style_comment_rest
  78     .loop c_style_comment_char_no_star .and c_style_comment_rest_1;
  79 c_style_comment_rest_1
  80     c_style_comment_end .or c_style_comment_rest_2;
  81 c_style_comment_rest_2
  82     '*' .and c_style_comment_rest;
  83
  84 c_style_comment_char_no_star
  85     '\x2B'-'\xFF' .or '\x01'-'\x29';
  86
  87 c_style_comment_end
  88     '*' .and '/';
  89
  90 cpp_style_comment_block
  91     '/' .and '/' .and cpp_style_comment_block_1;
  92 cpp_style_comment_block_1
  93     cpp_style_comment_block_2 .or cpp_style_comment_block_3;
  94 cpp_style_comment_block_2
  95     .loop cpp_style_comment_char .and new_line;
  96 cpp_style_comment_block_3
  97     .loop cpp_style_comment_char;
  98
  99 cpp_style_comment_char
 100     '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
 101
 102 new_line
 103     cr_lf .or lf_cr .or '\n' .or '\r';
 104
 105 cr_lf
 106     '\r' .and '\n';
 107
 108 lf_cr
 109         '\n' .and '\r';
 110
 111 .string __string_filter;
 112
 113 __string_filter
 114     .loop __identifier_char;
 115
 116 __identifier_char
 117     'a'-'z' .or 'A'-'Z' .or '_' .or '0'-'9';
 118