CExpressionCalculator::ParseAddSub

/* CExpressionCalculator::ParseAddSub(char const*&) */

undefined4 __thiscall CExpressionCalculator::ParseAddSub(CExpressionCalculator *this,char **param_1)

{
  int iVar1;
  float fVar2;
  char *pcVar3;
  undefined4 uVar4;
  int iVar5;
  char cVar6;
  undefined4 uVar7;
  undefined4 uVar8;
  int local_2c;
  float local_28;
  char *local_24;
  char *local_20;
  
  pcVar3 = *param_1;
  uVar4 = *(undefined4 *)(this + 0x44);
  uVar7 = ParseDivMul(this,param_1);
  if ((char)uVar7 == '\0') {
    *(undefined4 *)(this + 0x44) = uVar4;
    *param_1 = pcVar3;
    return uVar7;
  }
  pcVar3 = *param_1;
  uVar4 = *(undefined4 *)(this + 0x44);
  local_24 = "+";
  local_20 = "-";
  local_2c = 2;
  cVar6 = ParseStringList(param_1,&local_24,&local_2c);
  if ((cVar6 != '\0') && (uVar8 = ParseAddSub(this,param_1), (char)uVar8 != '\0')) {
    iVar5 = *(int *)(this + 0x44);
    iVar1 = iVar5 + -1;
    fVar2 = *(float *)(*(int *)(this + 0x38) + iVar1 * 4);
    *(int *)(this + 0x44) = iVar1;
    local_28 = *(float *)(*(int *)(this + 0x38) + -4 + iVar1 * 4);
    *(int *)(this + 0x44) = iVar5 + -2;
    if (local_2c == 0) {
      local_28 = fVar2 + local_28;
    }
    else {
      if (local_2c != 1) {
        return uVar8;
      }
      local_28 = local_28 - fVar2;
    }
    CUtlStack<float,CUtlMemory<float,int>>::Push
              ((CUtlStack<float,CUtlMemory<float,int>> *)(this + 0x38),&local_28);
    return uVar8;
  }
  *(undefined4 *)(this + 0x44) = uVar4;
  *param_1 = pcVar3;
  return uVar7;
}