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amount.cc
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amount.cc
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/*
* Copyright (c) 2003-2010, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <system.hh>
#include "amount.h"
#include "commodity.h"
#include "annotate.h"
#include "pool.h"
namespace ledger {
bool amount_t::stream_fullstrings = false;
#if !defined(THREADSAFE)
// These global temporaries are pre-initialized for the sake of
// efficiency, and are reused over and over again.
static mpz_t temp;
static mpq_t tempq;
static mpfr_t tempf;
static mpfr_t tempfb;
static mpfr_t tempfnum;
static mpfr_t tempfden;
#endif
struct amount_t::bigint_t : public supports_flags<>
{
#define BIGINT_BULK_ALLOC 0x01
#define BIGINT_KEEP_PREC 0x02
mpq_t val;
precision_t prec;
uint_least32_t refc;
#define MP(bigint) ((bigint)->val)
bigint_t() : prec(0), refc(1) {
TRACE_CTOR(bigint_t, "");
mpq_init(val);
}
bigint_t(const bigint_t& other)
: supports_flags<>(static_cast<uint_least8_t>
(other.flags() & ~BIGINT_BULK_ALLOC)),
prec(other.prec), refc(1) {
TRACE_CTOR(bigint_t, "copy");
mpq_init(val);
mpq_set(val, other.val);
}
~bigint_t() {
TRACE_DTOR(bigint_t);
assert(refc == 0);
mpq_clear(val);
}
bool valid() const {
if (prec > 1024) {
DEBUG("ledger.validate", "amount_t::bigint_t: prec > 1024");
return false;
}
if (flags() & ~(BIGINT_BULK_ALLOC | BIGINT_KEEP_PREC)) {
DEBUG("ledger.validate",
"amount_t::bigint_t: flags() & ~(BULK_ALLOC | KEEP_PREC)");
return false;
}
return true;
}
#if defined(HAVE_BOOST_SERIALIZATION)
private:
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive& ar, const unsigned int /* version */)
{
ar & boost::serialization::base_object<supports_flags<> >(*this);
ar & val;
ar & prec;
ar & refc;
}
#endif // HAVE_BOOST_SERIALIZATION
};
bool amount_t::is_initialized = false;
namespace {
void stream_out_mpq(std::ostream& out,
mpq_t quant,
amount_t::precision_t precision,
int zeros_prec = -1,
mpfr_rnd_t rnd = GMP_RNDN,
const optional<commodity_t&>& comm = none)
{
char * buf = NULL;
try {
IF_DEBUG("amount.convert") {
char * tbuf = mpq_get_str(NULL, 10, quant);
DEBUG("amount.convert", "Rational to convert = " << tbuf);
std::free(tbuf);
}
// Convert the rational number to a floating-point, extending the
// floating-point to a large enough size to get a precise answer.
mp_prec_t num_prec = mpz_sizeinbase(mpq_numref(quant), 2);
num_prec += amount_t::extend_by_digits*64;
if (num_prec < MPFR_PREC_MIN)
num_prec = MPFR_PREC_MIN;
DEBUG("amount.convert", "num prec = " << num_prec);
mpfr_set_prec(tempfnum, num_prec);
mpfr_set_z(tempfnum, mpq_numref(quant), rnd);
mp_prec_t den_prec = mpz_sizeinbase(mpq_denref(quant), 2);
den_prec += amount_t::extend_by_digits*64;
if (den_prec < MPFR_PREC_MIN)
den_prec = MPFR_PREC_MIN;
DEBUG("amount.convert", "den prec = " << den_prec);
mpfr_set_prec(tempfden, den_prec);
mpfr_set_z(tempfden, mpq_denref(quant), rnd);
mpfr_set_prec(tempfb, num_prec + den_prec);
mpfr_div(tempfb, tempfnum, tempfden, rnd);
if (mpfr_asprintf(&buf, "%.*RNf", precision, tempfb) < 0)
throw_(amount_error,
_("Cannot output amount to a floating-point representation"));
DEBUG("amount.convert", "mpfr_print = " << buf
<< " (precision " << precision
<< ", zeros_prec " << zeros_prec << ")");
if (zeros_prec >= 0) {
string::size_type index = std::strlen(buf);
string::size_type point = 0;
for (string::size_type i = 0; i < index; i++) {
if (buf[i] == '.') {
point = i;
break;
}
}
if (point > 0) {
while (--index >= (point + 1 + zeros_prec) && buf[index] == '0')
buf[index] = '\0';
if (index >= (point + zeros_prec) && buf[index] == '.')
buf[index] = '\0';
}
}
if (comm) {
int integer_digits = 0;
if (comm && comm->has_flags(COMMODITY_STYLE_THOUSANDS)) {
// Count the number of integer digits
for (const char * p = buf; *p; p++) {
if (*p == '.')
break;
else if (*p != '-')
integer_digits++;
}
}
for (const char * p = buf; *p; p++) {
if (*p == '.') {
if (commodity_t::decimal_comma_by_default ||
(comm && comm->has_flags(COMMODITY_STYLE_DECIMAL_COMMA)))
out << ',';
else
out << *p;
assert(integer_digits <= 3);
}
else if (*p == '-') {
out << *p;
}
else {
out << *p;
if (integer_digits > 3 && --integer_digits % 3 == 0) {
if (commodity_t::decimal_comma_by_default ||
(comm && comm->has_flags(COMMODITY_STYLE_DECIMAL_COMMA)))
out << '.';
else
out << ',';
}
}
}
} else {
out << buf;
}
}
catch (...) {
if (buf != NULL)
mpfr_free_str(buf);
throw;
}
if (buf != NULL)
mpfr_free_str(buf);
}
}
void amount_t::initialize()
{
if (! is_initialized) {
mpz_init(temp);
mpq_init(tempq);
mpfr_init(tempf);
mpfr_init(tempfb);
mpfr_init(tempfnum);
mpfr_init(tempfden);
commodity_pool_t::current_pool.reset(new commodity_pool_t);
// Add time commodity conversions, so that timelog's may be parsed
// in terms of seconds, but reported as minutes or hours.
if (commodity_t * commodity = commodity_pool_t::current_pool->create("s"))
commodity->add_flags(COMMODITY_BUILTIN | COMMODITY_NOMARKET);
#if !defined(NO_ASSERTS)
else
assert(false);
#endif
// Add a "percentile" commodity
if (commodity_t * commodity = commodity_pool_t::current_pool->create("%"))
commodity->add_flags(COMMODITY_BUILTIN | COMMODITY_NOMARKET);
#if !defined(NO_ASSERTS)
else
assert(false);
#endif
is_initialized = true;
}
}
void amount_t::shutdown()
{
if (is_initialized) {
mpz_clear(temp);
mpq_clear(tempq);
mpfr_clear(tempf);
mpfr_clear(tempfb);
mpfr_clear(tempfnum);
mpfr_clear(tempfden);
commodity_pool_t::current_pool.reset();
is_initialized = false;
}
}
void amount_t::_copy(const amount_t& amt)
{
VERIFY(amt.valid());
if (quantity != amt.quantity) {
if (quantity)
_release();
// Never maintain a pointer into a bulk allocation pool; such
// pointers are not guaranteed to remain.
if (amt.quantity->has_flags(BIGINT_BULK_ALLOC)) {
quantity = new bigint_t(*amt.quantity);
} else {
quantity = amt.quantity;
DEBUG("amounts.refs",
quantity << " refc++, now " << (quantity->refc + 1));
quantity->refc++;
}
}
commodity_ = amt.commodity_;
VERIFY(valid());
}
void amount_t::_dup()
{
VERIFY(valid());
if (quantity->refc > 1) {
bigint_t * q = new bigint_t(*quantity);
_release();
quantity = q;
}
VERIFY(valid());
}
void amount_t::_clear()
{
if (quantity) {
_release();
quantity = NULL;
commodity_ = NULL;
} else {
assert(! commodity_);
}
}
void amount_t::_release()
{
VERIFY(valid());
DEBUG("amounts.refs", quantity << " refc--, now " << (quantity->refc - 1));
if (--quantity->refc == 0) {
if (quantity->has_flags(BIGINT_BULK_ALLOC))
quantity->~bigint_t();
else
checked_delete(quantity);
quantity = NULL;
commodity_ = NULL;
}
VERIFY(valid());
}
amount_t::amount_t(const double val) : commodity_(NULL)
{
TRACE_CTOR(amount_t, "const double");
quantity = new bigint_t;
mpq_set_d(MP(quantity), val);
quantity->prec = extend_by_digits; // an approximation
}
amount_t::amount_t(const unsigned long val) : commodity_(NULL)
{
TRACE_CTOR(amount_t, "const unsigned long");
quantity = new bigint_t;
mpq_set_ui(MP(quantity), val, 1);
}
amount_t::amount_t(const long val) : commodity_(NULL)
{
TRACE_CTOR(amount_t, "const long");
quantity = new bigint_t;
mpq_set_si(MP(quantity), val, 1);
}
amount_t& amount_t::operator=(const amount_t& amt)
{
if (this != &amt) {
if (amt.quantity)
_copy(amt);
else if (quantity)
_clear();
}
return *this;
}
int amount_t::compare(const amount_t& amt) const
{
VERIFY(amt.valid());
if (! quantity || ! amt.quantity) {
if (quantity)
throw_(amount_error, _("Cannot compare an amount to an uninitialized amount"));
else if (amt.quantity)
throw_(amount_error, _("Cannot compare an uninitialized amount to an amount"));
else
throw_(amount_error, _("Cannot compare two uninitialized amounts"));
}
if (has_commodity() && amt.has_commodity() &&
commodity() != amt.commodity())
throw_(amount_error,
_("Cannot compare amounts with different commodities: %1 and %2")
<< commodity().symbol() << amt.commodity().symbol());
return mpq_cmp(MP(quantity), MP(amt.quantity));
}
bool amount_t::operator==(const amount_t& amt) const
{
if ((quantity && ! amt.quantity) || (! quantity && amt.quantity))
return false;
else if (! quantity && ! amt.quantity)
return true;
else if (commodity() != amt.commodity())
return false;
return mpq_equal(MP(quantity), MP(amt.quantity));
}
amount_t& amount_t::operator+=(const amount_t& amt)
{
VERIFY(amt.valid());
if (! quantity || ! amt.quantity) {
if (quantity)
throw_(amount_error, _("Cannot add an uninitialized amount to an amount"));
else if (amt.quantity)
throw_(amount_error, _("Cannot add an amount to an uninitialized amount"));
else
throw_(amount_error, _("Cannot add two uninitialized amounts"));
}
if (has_commodity() && amt.has_commodity() &&
commodity() != amt.commodity())
throw_(amount_error,
_("Adding amounts with different commodities: %1 != %2")
<< (has_commodity() ? commodity().symbol() : _("NONE"))
<< (amt.has_commodity() ? amt.commodity().symbol() : _("NONE")));
_dup();
mpq_add(MP(quantity), MP(quantity), MP(amt.quantity));
if (has_commodity() == amt.has_commodity())
if (quantity->prec < amt.quantity->prec)
quantity->prec = amt.quantity->prec;
return *this;
}
amount_t& amount_t::operator-=(const amount_t& amt)
{
VERIFY(amt.valid());
if (! quantity || ! amt.quantity) {
if (quantity)
throw_(amount_error, _("Cannot subtract an amount from an uninitialized amount"));
else if (amt.quantity)
throw_(amount_error, _("Cannot subtract an uninitialized amount from an amount"));
else
throw_(amount_error, _("Cannot subtract two uninitialized amounts"));
}
if (has_commodity() && amt.has_commodity() &&
commodity() != amt.commodity())
throw_(amount_error,
_("Subtracting amounts with different commodities: %1 != %2")
<< (has_commodity() ? commodity().symbol() : _("NONE"))
<< (amt.has_commodity() ? amt.commodity().symbol() : _("NONE")));
_dup();
mpq_sub(MP(quantity), MP(quantity), MP(amt.quantity));
if (has_commodity() == amt.has_commodity())
if (quantity->prec < amt.quantity->prec)
quantity->prec = amt.quantity->prec;
return *this;
}
amount_t& amount_t::multiply(const amount_t& amt, bool ignore_commodity)
{
VERIFY(amt.valid());
if (! quantity || ! amt.quantity) {
if (quantity)
throw_(amount_error, _("Cannot multiply an amount by an uninitialized amount"));
else if (amt.quantity)
throw_(amount_error, _("Cannot multiply an uninitialized amount by an amount"));
else
throw_(amount_error, _("Cannot multiply two uninitialized amounts"));
}
_dup();
mpq_mul(MP(quantity), MP(quantity), MP(amt.quantity));
quantity->prec =
static_cast<precision_t>(quantity->prec + amt.quantity->prec);
if (! has_commodity() && ! ignore_commodity)
commodity_ = amt.commodity_;
if (has_commodity() && ! keep_precision()) {
precision_t comm_prec = commodity().precision();
if (quantity->prec > comm_prec + extend_by_digits)
quantity->prec = static_cast<precision_t>(comm_prec + extend_by_digits);
}
return *this;
}
amount_t& amount_t::operator/=(const amount_t& amt)
{
VERIFY(amt.valid());
if (! quantity || ! amt.quantity) {
if (quantity)
throw_(amount_error, _("Cannot divide an amount by an uninitialized amount"));
else if (amt.quantity)
throw_(amount_error, _("Cannot divide an uninitialized amount by an amount"));
else
throw_(amount_error, _("Cannot divide two uninitialized amounts"));
}
if (! amt)
throw_(amount_error, _("Divide by zero"));
_dup();
// Increase the value's precision, to capture fractional parts after
// the divide. Round up in the last position.
mpq_div(MP(quantity), MP(quantity), MP(amt.quantity));
quantity->prec =
static_cast<precision_t>(quantity->prec + amt.quantity->prec +
extend_by_digits);
if (! has_commodity())
commodity_ = amt.commodity_;
// If this amount has a commodity, and we're not dealing with plain
// numbers, or internal numbers (which keep full precision at all
// times), then round the number to within the commodity's precision
// plus six places.
if (has_commodity() && ! keep_precision()) {
precision_t comm_prec = commodity().precision();
if (quantity->prec > comm_prec + extend_by_digits)
quantity->prec = static_cast<precision_t>(comm_prec + extend_by_digits);
}
return *this;
}
amount_t::precision_t amount_t::precision() const
{
if (! quantity)
throw_(amount_error,
_("Cannot determine precision of an uninitialized amount"));
return quantity->prec;
}
bool amount_t::keep_precision() const
{
if (! quantity)
throw_(amount_error,
_("Cannot determine if precision of an uninitialized amount is kept"));
return quantity->has_flags(BIGINT_KEEP_PREC);
}
void amount_t::set_keep_precision(const bool keep) const
{
if (! quantity)
throw_(amount_error,
_("Cannot set whether to keep the precision of an uninitialized amount"));
if (keep)
quantity->add_flags(BIGINT_KEEP_PREC);
else
quantity->drop_flags(BIGINT_KEEP_PREC);
}
amount_t::precision_t amount_t::display_precision() const
{
if (! quantity)
throw_(amount_error,
_("Cannot determine display precision of an uninitialized amount"));
commodity_t& comm(commodity());
if (comm && ! keep_precision())
return comm.precision();
else
return comm ? std::max(quantity->prec, comm.precision()) : quantity->prec;
}
void amount_t::in_place_negate()
{
if (quantity) {
_dup();
mpq_neg(MP(quantity), MP(quantity));
} else {
throw_(amount_error, _("Cannot negate an uninitialized amount"));
}
}
amount_t amount_t::inverted() const
{
if (! quantity)
throw_(amount_error, _("Cannot invert an uninitialized amount"));
amount_t t(*this);
t._dup();
mpq_inv(MP(t.quantity), MP(t.quantity));
return t;
}
void amount_t::in_place_round()
{
if (! quantity)
throw_(amount_error, _("Cannot set rounding for an uninitialized amount"));
else if (! keep_precision())
return;
_dup();
set_keep_precision(false);
}
void amount_t::in_place_truncate()
{
#if 1
if (! quantity)
throw_(amount_error, _("Cannot truncate an uninitialized amount"));
_dup();
DEBUG("amount.truncate",
"Truncating " << *this << " to precision " << display_precision());
std::ostringstream out;
stream_out_mpq(out, MP(quantity), display_precision());
scoped_array<char> buf(new char [out.str().length() + 1]);
std::strcpy(buf.get(), out.str().c_str());
char * q = buf.get();
for (char * p = q; *p != '\0'; p++, q++) {
if (*p == '.') p++;
if (p != q) *q = *p;
}
*q = '\0';
mpq_set_str(MP(quantity), buf.get(), 10);
mpz_ui_pow_ui(temp, 10, display_precision());
mpq_set_z(tempq, temp);
mpq_div(MP(quantity), MP(quantity), tempq);
DEBUG("amount.truncate", "Truncated = " << *this);
#else
// This naive implementation is straightforward, but extremely inefficient
// as it requires parsing the commodity too, which might be fully annotated.
*this = amount_t(to_string());
#endif
}
void amount_t::in_place_floor()
{
if (! quantity)
throw_(amount_error, _("Cannot floor an uninitialized amount"));
_dup();
std::ostringstream out;
stream_out_mpq(out, MP(quantity), precision_t(0), -1, GMP_RNDZ);
mpq_set_str(MP(quantity), out.str().c_str(), 10);
}
void amount_t::in_place_unround()
{
if (! quantity)
throw_(amount_error, _("Cannot unround an uninitialized amount"));
else if (keep_precision())
return;
_dup();
DEBUG("amount.unround", "Unrounding " << *this);
set_keep_precision(true);
DEBUG("amount.unround", "Unrounded = " << *this);
}
void amount_t::in_place_reduce()
{
if (! quantity)
throw_(amount_error, _("Cannot reduce an uninitialized amount"));
while (commodity_ && commodity().smaller()) {
*this *= commodity().smaller()->number();
commodity_ = commodity().smaller()->commodity_;
}
}
void amount_t::in_place_unreduce()
{
if (! quantity)
throw_(amount_error, _("Cannot unreduce an uninitialized amount"));
amount_t temp = *this;
commodity_t * comm = commodity_;
bool shifted = false;
while (comm && comm->larger()) {
amount_t next_temp = temp / comm->larger()->number();
if (next_temp.abs() < amount_t(1L))
break;
temp = next_temp;
comm = comm->larger()->commodity_;
shifted = true;
}
if (shifted) {
*this = temp;
commodity_ = comm;
}
}
optional<amount_t>
amount_t::value(const optional<datetime_t>& moment,
const optional<commodity_t&>& in_terms_of) const
{
if (quantity) {
#if defined(DEBUG_ON)
DEBUG("commodity.prices.find",
"amount_t::value of " << commodity().symbol());
if (moment)
DEBUG("commodity.prices.find",
"amount_t::value: moment = " << *moment);
if (in_terms_of)
DEBUG("commodity.prices.find",
"amount_t::value: in_terms_of = " << in_terms_of->symbol());
#endif
if (has_commodity() &&
(in_terms_of || ! commodity().has_flags(COMMODITY_PRIMARY))) {
optional<price_point_t> point;
optional<commodity_t&> comm(in_terms_of);
if (has_annotation() && annotation().price) {
if (annotation().has_flags(ANNOTATION_PRICE_FIXATED)) {
point = price_point_t();
point->price = *annotation().price;
DEBUG("commodity.prices.find",
"amount_t::value: fixated price = " << point->price);
}
else if (! comm) {
comm = annotation().price->commodity();
}
}
if (! point) {
if (comm && commodity().referent() == comm->referent())
return *this;
point = commodity().find_price(comm, moment);
// Whether a price was found or not, check whether we should attempt
// to download a price from the Internet. This is done if (a) no
// price was found, or (b) the price is "stale" according to the
// setting of --price-exp.
if (point)
point = commodity().check_for_updated_price(point, moment, comm);
}
if (point) {
amount_t price(point->price);
price.multiply(*this, true);
price.in_place_round();
return price;
}
}
} else {
throw_(amount_error,
_("Cannot determine value of an uninitialized amount"));
}
return none;
}
amount_t amount_t::price() const
{
if (has_annotation() && annotation().price) {
amount_t temp(*annotation().price);
temp *= *this;
DEBUG("amount.price", "Returning price of " << *this << " = " << temp);
return temp;
}
return *this;
}
int amount_t::sign() const
{
if (! quantity)
throw_(amount_error, _("Cannot determine sign of an uninitialized amount"));
return mpq_sgn(MP(quantity));
}
bool amount_t::is_zero() const
{
if (! quantity)
throw_(amount_error, _("Cannot determine if an uninitialized amount is zero"));
if (has_commodity()) {
if (keep_precision() || quantity->prec <= commodity().precision()) {
return is_realzero();
}
else if (is_realzero()) {
return true;
}
else if (mpz_cmp(mpq_numref(MP(quantity)),
mpq_denref(MP(quantity))) > 0) {
DEBUG("amount.is_zero", "Numerator is larger than the denominator");
return false;
}
else {
DEBUG("amount.is_zero", "We have to print the number to check for zero");
std::ostringstream out;
stream_out_mpq(out, MP(quantity), commodity().precision());
string output = out.str();
if (! output.empty()) {
for (const char * p = output.c_str(); *p; p++)
if (*p != '0' && *p != '.' && *p != '-')
return false;
}
return true;
}
}
return is_realzero();
}
double amount_t::to_double() const
{
if (! quantity)
throw_(amount_error, _("Cannot convert an uninitialized amount to a double"));
mpfr_set_q(tempf, MP(quantity), GMP_RNDN);
return mpfr_get_d(tempf, GMP_RNDN);
}
long amount_t::to_long() const
{
if (! quantity)
throw_(amount_error, _("Cannot convert an uninitialized amount to a long"));
mpfr_set_q(tempf, MP(quantity), GMP_RNDN);
return mpfr_get_si(tempf, GMP_RNDN);
}
bool amount_t::fits_in_long() const
{
mpfr_set_q(tempf, MP(quantity), GMP_RNDN);
return mpfr_fits_slong_p(tempf, GMP_RNDN);
}
commodity_t& amount_t::commodity() const
{
return (has_commodity() ?
*commodity_ : *commodity_pool_t::current_pool->null_commodity);
}
bool amount_t::has_commodity() const
{
return commodity_ && commodity_ != commodity_->pool().null_commodity;
}
void amount_t::annotate(const annotation_t& details)
{
commodity_t * this_base;
annotated_commodity_t * this_ann = NULL;
if (! quantity)
throw_(amount_error, _("Cannot annotate the commodity of an uninitialized amount"));
else if (! has_commodity())
return; // ignore attempt to annotate a "bare commodity
if (commodity().has_annotation()) {
this_ann = &as_annotated_commodity(commodity());
this_base = &this_ann->referent();
} else {
this_base = &commodity();
}
assert(this_base);
DEBUG("amounts.commodities", "Annotating commodity for amount "
<< *this << std::endl << details);
if (commodity_t * ann_comm =
this_base->pool().find_or_create(*this_base, details))
set_commodity(*ann_comm);
#ifdef ASSERTS_ON
else
assert(false);
#endif
DEBUG("amounts.commodities", "Annotated amount is " << *this);
}
bool amount_t::has_annotation() const
{
if (! quantity)
throw_(amount_error,
_("Cannot determine if an uninitialized amount's commodity is annotated"));
assert(! has_commodity() || ! commodity().has_annotation() ||
as_annotated_commodity(commodity()).details);
return has_commodity() && commodity().has_annotation();
}
annotation_t& amount_t::annotation()
{
if (! quantity)
throw_(amount_error,
_("Cannot return commodity annotation details of an uninitialized amount"));
if (! commodity().has_annotation())
throw_(amount_error,
_("Request for annotation details from an unannotated amount"));
annotated_commodity_t& ann_comm(as_annotated_commodity(commodity()));
return ann_comm.details;
}
amount_t amount_t::strip_annotations(const keep_details_t& what_to_keep) const
{
if (! quantity)
throw_(amount_error,
_("Cannot strip commodity annotations from an uninitialized amount"));
if (! what_to_keep.keep_all(commodity())) {
amount_t t(*this);
t.set_commodity(commodity().strip_annotations(what_to_keep));
return t;
}
return *this;
}
namespace {
void parse_quantity(std::istream& in, string& value)
{
char buf[256];
char c = peek_next_nonws(in);
READ_INTO(in, buf, 255, c,
std::isdigit(c) || c == '-' || c == '.' || c == ',');
string::size_type len = std::strlen(buf);
while (len > 0 && ! std::isdigit(buf[len - 1])) {
buf[--len] = '\0';
in.unget();
}
value = buf;
}
}
bool amount_t::parse(std::istream& in, const parse_flags_t& flags)
{
// The possible syntax for an amount is:
//
// [-]NUM[ ]SYM [@ AMOUNT]
// SYM[ ][-]NUM [@ AMOUNT]
string symbol;
string quant;
annotation_t details;
bool negative = false;
commodity_t::flags_t comm_flags = COMMODITY_STYLE_DEFAULTS;
char c = peek_next_nonws(in);
if (c == '-') {
negative = true;
in.get(c);
c = peek_next_nonws(in);
}
char n;
if (std::isdigit(c)) {
parse_quantity(in, quant);
if (! in.eof() && ((n = static_cast<char>(in.peek())) != '\n')) {
if (std::isspace(n))
comm_flags |= COMMODITY_STYLE_SEPARATED;
commodity_t::parse_symbol(in, symbol);
if (! symbol.empty())
comm_flags |= COMMODITY_STYLE_SUFFIXED;