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authormueller <mueller@afe2bf4a-e733-0410-8a33-86f594647bc7>1999-12-15 19:25:10 (GMT)
committermueller <mueller@afe2bf4a-e733-0410-8a33-86f594647bc7>1999-12-15 19:25:10 (GMT)
commit719f0a35063be88eddcc4ed8fe7a940de47ef20c (patch)
treecc1cd70cf5761ddf72ff114c0b65576c3f4c1d2a /src/cppvalue.cpp
parentbd30c025c4651ddda467f1af09d4c7ccab397bde (diff)
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initial version
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diff --git a/src/cppvalue.cpp b/src/cppvalue.cpp
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+/******************************************************************************
+ *
+ * $Id$
+ *
+ *
+ * Copyright (C) 1997-1999 by Dimitri van Heesch.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation under the terms of the GNU General Public License is hereby
+ * granted. No representations are made about the suitability of this software
+ * for any purpose. It is provided "as is" without express or implied warranty.
+ * See the GNU General Public License for more details.
+ *
+ * All output generated with Doxygen is not covered by this license.
+ *
+ */
+
+#include <stdlib.h>
+
+#include "cppvalue.h"
+#include "constexp.h"
+
+CPPValue parseOctal()
+{
+ long val = 0;
+ for (const char *p = strToken.data(); *p != 0; p++)
+ {
+ if (*p >= '0' && *p <= '7') val = val * 8 + *p - '0';
+ }
+ return CPPValue(val);
+}
+
+CPPValue parseDecimal()
+{
+ long val = 0;
+ for (const char *p = strToken.data(); *p != 0; p++)
+ {
+ if (*p >= '0' && *p <= '9') val = val * 10 + *p - '0';
+ }
+ return CPPValue(val);
+}
+
+CPPValue parseHexadecimal()
+{
+ long val = 0;
+ for (const char *p = strToken.data(); *p != 0; p++)
+ {
+ if (*p >= '0' && *p <= '9') val = val * 16 + *p - '0';
+ else if (*p >= 'a' && *p <= 'f') val = val * 16 + *p - 'a' + 10;
+ else if (*p >= 'A' && *p <= 'F') val = val * 16 + *p - 'A' + 10;
+ }
+ return CPPValue(val);
+}
+
+CPPValue parseCharacter() // does not work for '\n' and the alike
+{
+ if (strToken[1]=='\\')
+ {
+ switch(strToken[2])
+ {
+ case 'n': return CPPValue((long)'\n');
+ case 't': return CPPValue((long)'\t');
+ case 'v': return CPPValue((long)'\v');
+ case 'b': return CPPValue((long)'\b');
+ case 'r': return CPPValue((long)'\r');
+ case 'f': return CPPValue((long)'\f');
+ case 'a': return CPPValue((long)'\a');
+ case '\\': return CPPValue((long)'\\');
+ case '?': return CPPValue((long)'\?');
+ case '\'': return CPPValue((long)'\'');
+ case '"': return CPPValue((long)'"');
+ case '0': return parseOctal();
+ case 'x':
+ case 'X': return parseHexadecimal();
+ default: printf("Invalid escape sequence %s found!\n",strToken.data());
+ return CPPValue(0L);
+ }
+ }
+ return CPPValue((long)strToken[1]);
+}
+
+CPPValue parseFloat()
+{
+ return CPPValue(atof(strToken));
+}