/*
* Name: long ChToInt(const char *ch)
* Func: if ch has int charactors, change to int and return
*
* Para:
* const char *ch Point to the text
* int n Lenth of the string
*
* ret : long
*
* 2011.4.12 by zy
*
*/
long ChToInt(const char *ch, int n)
{
long i = 0;
if(n > 1){
return ch[0] == '-' ? (ChToInt(ch, n - 1)*10 - (ch[n-1] - '0'))
: (ChToInt(ch, n - 1)*10 + (ch[n-1] - '0'));
} else {
return ch[0] == '-' ? 0 : (ch[0] - '0');
}
}
bool isToday( struct tm& nowT, std::string &res )
{
if ( res.length() < 8 ){
return false;
}
if ( ((nowT.tm_year+1900)*10000 + (nowT.tm_mon+1)*100 + nowT.tm_mday) !=ChToInt(res.c_str(),8) ){
return false;
}
return true;
}
double CAdjustStock::calcExpr( const Tree &tree )
{
//int num = tree.childNum();
for (int i = 0; i < tree.childNum() ; i++)
{
const Tree& tmp_tree = tree.child(i) ;
calcExpr(tmp_tree);
}
double calResult=0;
//当前节点类型
//cout << "tree type =" << tree->getType(tree) << endl;
switch (tree.type())
{
case LT_:
case GT:
case OR:
case AND:
{
double a1=numbers.top();
numbers.pop();
double a2=numbers.top();
numbers.pop();
calResult = OP(tree.type(),a1,a2);
break;
}
case DOUBLE:
{
numbers.push( ChToInt(tree.text().c_str(), tree.text().length()) );
break;
}
case VAR:
{
//取到语法树的变量节点 a,b
string strVar( tree.text() );
map<string, double>::iterator iter;
iter = m_parseMap.find(strVar);
if ( iter != m_parseMap.end() )
{
//查找，转换成变量对应的数值
numbers.push( iter->second );
}
}
default:
{
break;
}
}
return calResult;
}
