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| Source at commit 1322 created 12 years 8 months ago. By meklort, Add doxygen to utils folder | |
|---|---|
| 1 | /******************************************************************************␊ |
| 2 | *␊ |
| 3 | * $Id: cppvalue.cpp,v 1.6 2001/03/19 19:27:40 root Exp $␊ |
| 4 | *␊ |
| 5 | *␊ |
| 6 | * Copyright (C) 1997-2011 by Dimitri van Heesch.␊ |
| 7 | *␊ |
| 8 | * Permission to use, copy, modify, and distribute this software and its␊ |
| 9 | * documentation under the terms of the GNU General Public License is hereby ␊ |
| 10 | * granted. No representations are made about the suitability of this software ␊ |
| 11 | * for any purpose. It is provided "as is" without express or implied warranty.␊ |
| 12 | * See the GNU General Public License for more details.␊ |
| 13 | *␊ |
| 14 | * Documents produced by Doxygen are derivative works derived from the␊ |
| 15 | * input used in their production; they are not affected by this license.␊ |
| 16 | *␊ |
| 17 | */␊ |
| 18 | ␊ |
| 19 | #include <stdlib.h>␊ |
| 20 | ␊ |
| 21 | #include "cppvalue.h"␊ |
| 22 | #include "constexp.h"␊ |
| 23 | ␊ |
| 24 | CPPValue parseOctal()␊ |
| 25 | {␊ |
| 26 | long val = 0;␊ |
| 27 | for (const char *p = g_strToken.data(); *p != 0; p++)␊ |
| 28 | {␊ |
| 29 | if (*p >= '0' && *p <= '7') val = val * 8 + *p - '0';␊ |
| 30 | }␊ |
| 31 | return CPPValue(val);␊ |
| 32 | }␊ |
| 33 | ␊ |
| 34 | CPPValue parseDecimal()␊ |
| 35 | {␊ |
| 36 | long val = 0;␊ |
| 37 | for (const char *p = g_strToken.data(); *p != 0; p++)␊ |
| 38 | {␊ |
| 39 | if (*p >= '0' && *p <= '9') val = val * 10 + *p - '0';␊ |
| 40 | }␊ |
| 41 | return CPPValue(val);␊ |
| 42 | }␊ |
| 43 | ␊ |
| 44 | CPPValue parseHexadecimal()␊ |
| 45 | {␊ |
| 46 | long val = 0;␊ |
| 47 | for (const char *p = g_strToken.data(); *p != 0; p++)␊ |
| 48 | {␊ |
| 49 | if (*p >= '0' && *p <= '9') val = val * 16 + *p - '0';␊ |
| 50 | else if (*p >= 'a' && *p <= 'f') val = val * 16 + *p - 'a' + 10;␊ |
| 51 | else if (*p >= 'A' && *p <= 'F') val = val * 16 + *p - 'A' + 10;␊ |
| 52 | }␊ |
| 53 | //printf("parseHexadecimal %s->%x\n",g_strToken.data(),val);␊ |
| 54 | return CPPValue(val);␊ |
| 55 | }␊ |
| 56 | ␊ |
| 57 | CPPValue parseCharacter() // does not work for '\n' and the alike ␊ |
| 58 | {␊ |
| 59 | if (g_strToken[1]=='\\')␊ |
| 60 | {␊ |
| 61 | switch(g_strToken[2])␊ |
| 62 | {␊ |
| 63 | case 'n': return CPPValue((long)'\n');␊ |
| 64 | case 't': return CPPValue((long)'\t');␊ |
| 65 | case 'v': return CPPValue((long)'\v');␊ |
| 66 | case 'b': return CPPValue((long)'\b');␊ |
| 67 | case 'r': return CPPValue((long)'\r');␊ |
| 68 | case 'f': return CPPValue((long)'\f');␊ |
| 69 | case 'a': return CPPValue((long)'\a');␊ |
| 70 | case '\\': return CPPValue((long)'\\');␊ |
| 71 | case '?': return CPPValue((long)'\?');␊ |
| 72 | case '\'': return CPPValue((long)'\'');␊ |
| 73 | case '"': return CPPValue((long)'"');␊ |
| 74 | case '0': // fall through␊ |
| 75 | case '1': // fall through␊ |
| 76 | case '2': // fall through␊ |
| 77 | case '3': // fall through␊ |
| 78 | case '4': // fall through␊ |
| 79 | case '5': // fall through␊ |
| 80 | case '6': // fall through␊ |
| 81 | case '7': // fall through␊ |
| 82 | return parseOctal();␊ |
| 83 | case 'x': ␊ |
| 84 | case 'X': return parseHexadecimal();␊ |
| 85 | default: printf("Invalid escape sequence %s found!\n",g_strToken.data()); ␊ |
| 86 | return CPPValue(0L); ␊ |
| 87 | }␊ |
| 88 | }␊ |
| 89 | return CPPValue((long)g_strToken[1]);␊ |
| 90 | }␊ |
| 91 | ␊ |
| 92 | CPPValue parseFloat()␊ |
| 93 | {␊ |
| 94 | return CPPValue(atof(g_strToken));␊ |
| 95 | }␊ |
| 96 | |
