cppvalue.cpp File Reference

#include <stdlib.h>
#include "cppvalue.h"
#include "constexp.h"

Go to the source code of this file.

Functions
CPPValue	parseOctal ()
CPPValue	parseDecimal ()
CPPValue	parseHexadecimal ()
CPPValue	parseCharacter ()
CPPValue	parseFloat ()

Function Documentation

CPPValue parseCharacter

(

)

Definition at line 57 of file cppvalue.cpp.

References g_strToken, parseHexadecimal(), and parseOctal().

{
  if (g_strToken[1]=='\\')
  {
    switch(g_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':  // fall through
      case '1':  // fall through
      case '2':  // fall through
      case '3':  // fall through
      case '4':  // fall through
      case '5':  // fall through
      case '6':  // fall through
      case '7':  // fall through
                 return parseOctal();
      case 'x': 
      case 'X':  return parseHexadecimal();
      default:   printf("Invalid escape sequence %s found!\n",g_strToken.data()); 
                 return CPPValue(0L); 
    }
  }
  return CPPValue((long)g_strToken[1]);
}

CPPValue parseDecimal

(

)

Definition at line 34 of file cppvalue.cpp.

References g_strToken.

{
  long val = 0;
  for (const char *p = g_strToken.data(); *p != 0; p++)
  {
    if (*p >= '0' && *p <= '9') val = val * 10 + *p - '0';
  }
  return CPPValue(val);
}

CPPValue parseFloat

(

)

Definition at line 92 of file cppvalue.cpp.

References g_strToken.

{
  return CPPValue(atof(g_strToken));
}

CPPValue parseHexadecimal

(

)

Definition at line 44 of file cppvalue.cpp.

References g_strToken.

Referenced by parseCharacter().

{
  long val = 0;
  for (const char *p = g_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;
  }
  //printf("parseHexadecimal %s->%x\n",g_strToken.data(),val);
  return CPPValue(val);
}

CPPValue parseOctal

(

)

Definition at line 24 of file cppvalue.cpp.

References g_strToken.

Referenced by parseCharacter().

{
  long val = 0;
  for (const char *p = g_strToken.data(); *p != 0; p++)
  {
    if (*p >= '0' && *p <= '7') val = val * 8 + *p - '0';
  }
  return CPPValue(val);
}