CExpressionEvaluator::IsIdentifierOrConstant

/* CExpressionEvaluator::IsIdentifierOrConstant(char) */

undefined4 __thiscall
CExpressionEvaluator::IsIdentifierOrConstant(CExpressionEvaluator *this,char param_1)

{
  int iVar1;
  int iVar2;
  ushort **ppuVar3;
  CExpressionEvaluator CVar4;
  int iVar5;
  CExpressionEvaluator *pCVar6;
  
  if (param_1 == '$') {
    iVar2 = *(int *)(this + 8);
    this[0x10] = (CExpressionEvaluator)0x24;
    ppuVar3 = __ctype_b_loc();
    iVar5 = *(int *)(this + 0xc);
    iVar1 = 1;
    while ((CVar4 = *(CExpressionEvaluator *)(iVar2 + iVar5), ((*ppuVar3)[(char)CVar4] & 8) != 0 ||
           (CVar4 == (CExpressionEvaluator)0x5f))) {
      if (iVar1 == 0x80) {
        return 0;
      }
      this[iVar1 + 0x10] = CVar4;
      iVar1 = iVar1 + 1;
      iVar5 = *(int *)(this + 0xc) + 1;
      *(int *)(this + 0xc) = iVar5;
    }
    if (iVar1 < 0x7f) {
      this[iVar1 + 0x10] = (CExpressionEvaluator)0x0;
      return 1;
    }
  }
  else if ((int)param_1 - 0x30U < 10) {
    iVar5 = *(int *)(this + 0xc);
    this[0x10] = (CExpressionEvaluator)param_1;
    pCVar6 = (CExpressionEvaluator *)(*(int *)(this + 8) + iVar5);
    CVar4 = *pCVar6;
    iVar1 = 1;
    iVar2 = iVar1;
    if (9 < (int)(char)CVar4 - 0x30U) {
LAB_00b84b79:
      this[iVar1 + 0x10] = (CExpressionEvaluator)0x0;
      return 1;
    }
    do {
      this[iVar2 + 0x10] = CVar4;
      iVar1 = iVar2 + 1;
      *(int *)(this + 0xc) = iVar5 + iVar2;
      CVar4 = pCVar6[iVar2];
      if (9 < (int)(char)CVar4 - 0x30U) {
        if (0x7e < iVar1) {
          return 0;
        }
        goto LAB_00b84b79;
      }
      iVar2 = iVar1;
    } while (iVar1 != 0x80);
  }
  return 0;
}