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#include "balance.h"
namespace ledger {
balance_t& balance_t::operator*=(const balance_t& bal)
{
if (realzero() || bal.realzero()) {
return *this = amount_t();
}
else if (bal.amounts.size() == 1) {
return *this *= (*bal.amounts.begin()).second;
}
else if (amounts.size() == 1) {
return *this = bal * *this;
}
else {
// Since we would fail with an error at this point otherwise, try
// stripping annotations to see if we can come up with a
// reasonable result. The user will not notice any annotations
// missing (since they are viewing a stripped report anyway), only
// that some of their value expression may not see any pricing or
// date data because of this operation.
balance_t temp(bal.strip_annotations());
if (temp.amounts.size() == 1)
return *this *= temp;
temp = strip_annotations();
if (temp.amounts.size() == 1)
return *this = bal * temp;
throw_(amount_error, "Cannot multiply two balances: " << temp << " * " << bal);
}
}
balance_t& balance_t::operator*=(const amount_t& amt)
{
if (realzero() || amt.realzero()) {
return *this = amount_t();
}
else if (! amt.commodity()) {
// Multiplying by the null commodity causes all amounts to be
// increased by the same factor.
for (amounts_map::iterator i = amounts.begin();
i != amounts.end();
i++)
(*i).second *= amt;
}
else if (amounts.size() == 1) {
*this = (*amounts.begin()).second * amt;
}
else {
amounts_map::iterator i = amounts.find(&amt.commodity());
if (i != amounts.end()) {
(*i).second *= amt;
} else {
// Try stripping annotations before giving an error.
balance_t temp(strip_annotations());
if (temp.amounts.size() == 1) {
return *this = (*temp.amounts.begin()).second * amt;
} else {
i = temp.amounts.find(&amt.commodity());
if (i != temp.amounts.end())
return *this = temp * amt;
}
throw_(amount_error, "Attempt to multiply balance by a commodity" <<
" not found in that balance: " << temp << " * " << amt);
}
}
return *this;
}
balance_t& balance_t::operator/=(const balance_t& bal)
{
if (bal.realzero()) {
throw_(amount_error, "Divide by zero: " << *this << " / " << bal);
}
else if (realzero()) {
return *this = amount_t();
}
else if (bal.amounts.size() == 1) {
return *this /= (*bal.amounts.begin()).second;
}
else if (*this == bal) {
return *this = amount_t(1L);
}
else {
// Try stripping annotations before giving an error.
balance_t temp(bal.strip_annotations());
if (temp.amounts.size() == 1)
return *this /= temp;
throw_(amount_error,
"Cannot divide two balances: " << temp << " / " << bal);
}
}
balance_t& balance_t::operator/=(const amount_t& amt)
{
if (amt.realzero()) {
throw_(amount_error, "Divide by zero: " << *this << " / " << amt);
}
else if (realzero()) {
return *this = amount_t();
}
else if (! amt.commodity()) {
// Dividing by the null commodity causes all amounts to be
// decreased by the same factor.
for (amounts_map::iterator i = amounts.begin();
i != amounts.end();
i++)
(*i).second /= amt;
}
else if (amounts.size() == 1 &&
(*amounts.begin()).first == &amt.commodity()) {
(*amounts.begin()).second /= amt;
}
else {
amounts_map::iterator i = amounts.find(&amt.commodity());
if (i != amounts.end()) {
(*i).second /= amt;
} else {
// Try stripping annotations before giving an error.
balance_t temp(strip_annotations());
if (temp.amounts.size() == 1 &&
(*temp.amounts.begin()).first == &amt.commodity())
return *this = temp / amt;
throw_(amount_error, "Attempt to divide balance by a commodity" <<
" not found in that balance: " << temp << " * " << amt);
}
}
return *this;
}
optional<amount_t>
balance_t::amount(const optional<const commodity_t&>& commodity) const
{
if (! commodity) {
if (amounts.size() == 1) {
amounts_map::const_iterator i = amounts.begin();
return (*i).second;
}
else if (amounts.size() > 1) {
// Try stripping annotations before giving an error.
balance_t temp(strip_annotations());
if (temp.amounts.size() == 1)
return temp.amount(commodity);
throw_(amount_error,
"Requested amount of a balance with multiple commodities: " << temp);
}
}
else if (amounts.size() > 0) {
amounts_map::const_iterator i = amounts.find(&*commodity);
if (i != amounts.end())
return (*i).second;
}
return optional<amount_t>();
}
optional<balance_t>
balance_t::value(const optional<moment_t>& moment) const
{
optional<balance_t> temp;
for (amounts_map::const_iterator i = amounts.begin();
i != amounts.end();
i++)
if (optional<amount_t> val = (*i).second.value(moment)) {
if (! temp)
temp = balance_t();
*temp += *val;
}
return temp;
}
balance_t balance_t::strip_annotations(const bool keep_price,
const bool keep_date,
const bool keep_tag) const
{
balance_t temp;
for (amounts_map::const_iterator i = amounts.begin();
i != amounts.end();
i++)
temp += (*i).second.strip_annotations(keep_price, keep_date, keep_tag);
return temp;
}
void balance_t::write(std::ostream& out,
const int first_width,
const int latter_width) const
{
bool first = true;
int lwidth = latter_width;
if (lwidth == -1)
lwidth = first_width;
typedef std::vector<const amount_t *> amounts_array;
amounts_array sorted;
for (amounts_map::const_iterator i = amounts.begin();
i != amounts.end();
i++)
if ((*i).second)
sorted.push_back(&(*i).second);
std::stable_sort(sorted.begin(), sorted.end(),
compare_amount_commodities());
for (amounts_array::const_iterator i = sorted.begin();
i != sorted.end();
i++) {
int width;
if (! first) {
out << std::endl;
width = lwidth;
} else {
first = false;
width = first_width;
}
out.width(width);
out.fill(' ');
out << std::right << **i;
}
if (first) {
out.width(first_width);
out.fill(' ');
out << std::right << "0";
}
}
#if 0
balance_t::operator amount_t() const
{
if (amounts.size() == 1) {
return (*amounts.begin()).second;
}
else if (amounts.size() == 0) {
return amount_t();
}
else {
// Try stripping annotations before giving an error.
balance_t temp(strip_annotations());
if (temp.amounts.size() == 1)
return (*temp.amounts.begin()).second;
throw_(amount_error,
"Cannot convert a balance with " <<
"multiple commodities to an amount: " << temp);
}
}
#endif
} // namespace ledger
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