/usr/share/doc/ragel/examples/gotocallret.cpp is in ragel 6.10-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 | #line 1 "gotocallret.rl"
/*
* Demonstrate the use of goto, call and return. This machine expects either a
* lower case char or a digit as a command then a space followed by the command
* arg. If the command is a char, then the arg must be an a string of chars.
* If the command is a digit, then the arg must be a string of digits. This
* choice is determined by action code, rather than though transition
* desitinations.
*/
#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
using namespace std;
struct GotoCallRet
{
char comm;
int cs, top, stack[32];
int init( );
int execute( const char *data, int len, bool isEof );
int finish( );
};
#line 57 "gotocallret.rl"
#line 35 "gotocallret.cpp"
static const int GotoCallRet_start = 7;
static const int GotoCallRet_first_final = 7;
static const int GotoCallRet_error = 0;
static const int GotoCallRet_en_garble_line = 3;
static const int GotoCallRet_en_alp_comm = 5;
static const int GotoCallRet_en_dig_comm = 6;
static const int GotoCallRet_en_main = 7;
#line 60 "gotocallret.rl"
int GotoCallRet::init( )
{
#line 51 "gotocallret.cpp"
{
cs = GotoCallRet_start;
top = 0;
}
#line 64 "gotocallret.rl"
return 1;
}
int GotoCallRet::execute( const char *data, int len, bool isEof )
{
const char *p = data;
const char *pe = data + len;
const char *eof = isEof ? pe : 0;
#line 68 "gotocallret.cpp"
{
if ( p == pe )
goto _test_eof;
goto _resume;
_again:
switch ( cs ) {
case 7: goto st7;
case 0: goto st0;
case 1: goto st1;
case 2: goto st2;
case 3: goto st3;
case 4: goto st4;
case 8: goto st8;
case 5: goto st5;
case 9: goto st9;
case 6: goto st6;
case 10: goto st10;
default: break;
}
if ( ++p == pe )
goto _test_eof;
_resume:
switch ( cs )
{
tr2:
#line 52 "gotocallret.rl"
{cout << "correct command" << endl;}
goto st7;
st7:
if ( ++p == pe )
goto _test_eof7;
case 7:
#line 103 "gotocallret.cpp"
if ( (*p) > 57 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto tr11;
} else if ( (*p) >= 48 )
goto tr11;
goto tr0;
tr0:
#line 56 "gotocallret.rl"
{p--;{goto st3;}}
goto st0;
tr7:
#line 38 "gotocallret.rl"
{p--;{cs = stack[--top];goto _again;}}
goto st0;
tr9:
#line 39 "gotocallret.rl"
{p--;{cs = stack[--top];goto _again;}}
goto st0;
#line 122 "gotocallret.cpp"
st0:
cs = 0;
goto _out;
tr11:
#line 51 "gotocallret.rl"
{comm = (*p);}
goto st1;
st1:
if ( ++p == pe )
goto _test_eof1;
case 1:
#line 134 "gotocallret.cpp"
if ( (*p) == 32 )
goto tr1;
goto tr0;
tr1:
#line 42 "gotocallret.rl"
{
if ( comm >= 'a' )
{stack[top++] = 2;goto st5;}
else
{stack[top++] = 2;goto st6;}
}
goto st2;
st2:
if ( ++p == pe )
goto _test_eof2;
case 2:
#line 151 "gotocallret.cpp"
if ( (*p) == 10 )
goto tr2;
goto tr0;
st3:
if ( ++p == pe )
goto _test_eof3;
case 3:
if ( (*p) == 10 )
goto tr4;
goto tr3;
tr3:
#line 34 "gotocallret.rl"
{cout << "error: garbling line" << endl;}
goto st4;
st4:
if ( ++p == pe )
goto _test_eof4;
case 4:
#line 170 "gotocallret.cpp"
if ( (*p) == 10 )
goto tr6;
goto st4;
tr4:
#line 34 "gotocallret.rl"
{cout << "error: garbling line" << endl;}
#line 34 "gotocallret.rl"
{{goto st7;}}
goto st8;
tr6:
#line 34 "gotocallret.rl"
{{goto st7;}}
goto st8;
st8:
if ( ++p == pe )
goto _test_eof8;
case 8:
#line 188 "gotocallret.cpp"
goto st0;
st5:
if ( ++p == pe )
goto _test_eof5;
case 5:
if ( (*p) > 90 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto st9;
} else if ( (*p) >= 65 )
goto st9;
goto tr7;
st9:
if ( ++p == pe )
goto _test_eof9;
case 9:
if ( (*p) > 90 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto st9;
} else if ( (*p) >= 65 )
goto st9;
goto tr7;
st6:
if ( ++p == pe )
goto _test_eof6;
case 6:
if ( 48 <= (*p) && (*p) <= 57 )
goto st10;
goto tr9;
st10:
if ( ++p == pe )
goto _test_eof10;
case 10:
if ( 48 <= (*p) && (*p) <= 57 )
goto st10;
goto tr9;
}
_test_eof7: cs = 7; goto _test_eof;
_test_eof1: cs = 1; goto _test_eof;
_test_eof2: cs = 2; goto _test_eof;
_test_eof3: cs = 3; goto _test_eof;
_test_eof4: cs = 4; goto _test_eof;
_test_eof8: cs = 8; goto _test_eof;
_test_eof5: cs = 5; goto _test_eof;
_test_eof9: cs = 9; goto _test_eof;
_test_eof6: cs = 6; goto _test_eof;
_test_eof10: cs = 10; goto _test_eof;
_test_eof: {}
if ( p == eof )
{
switch ( cs ) {
case 5:
#line 38 "gotocallret.rl"
{p--;{cs = stack[--top]; if ( p == pe )
goto _test_eof;
goto _again;}}
break;
case 6:
#line 39 "gotocallret.rl"
{p--;{cs = stack[--top]; if ( p == pe )
goto _test_eof;
goto _again;}}
break;
case 1:
case 2:
#line 56 "gotocallret.rl"
{p--;{ if ( p == pe )
goto _test_eof3;
goto st3;}}
break;
#line 259 "gotocallret.cpp"
}
}
_out: {}
}
#line 74 "gotocallret.rl"
if ( cs == GotoCallRet_error )
return -1;
if ( cs >= GotoCallRet_first_final )
return 1;
return 0;
}
#define BUFSIZE 1024
int main()
{
char buf[BUFSIZE];
GotoCallRet gcr;
gcr.init();
while ( fgets( buf, sizeof(buf), stdin ) != 0 )
gcr.execute( buf, strlen(buf), false );
gcr.execute( 0, 0, true );
if ( gcr.cs < GotoCallRet_first_final )
cerr << "gotocallret: error: parsing input" << endl;
return 0;
}
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