Moved around most of the files so that source code is in src/, documentation

is in doc/, etc.

1 files changed, 0 insertions, 1773 deletions

diff --git a/value.cc b/value.cc
deleted file mode 100644
index ea52af1f..00000000
--- a/value.cc
+++ /dev/null
@@ -1,1773 +0,0 @@
-/*
- * Copyright (c) 2003-2008, 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 "value.h"
-#include "binary.h"
-
-namespace ledger {
-
-intrusive_ptr<value_t::storage_t> value_t::true_value;
-intrusive_ptr<value_t::storage_t> value_t::false_value;
-
-value_t::storage_t& value_t::storage_t::operator=(const value_t::storage_t& rhs)
-{
-  type = rhs.type;
-
-  switch (type) {
-  case DATETIME:
-    new(reinterpret_cast<datetime_t *>(data))
-      datetime_t(*reinterpret_cast<datetime_t *>
-		 (const_cast<char *>(rhs.data)));
-    break;
-
-  case DATE:
-    new(reinterpret_cast<date_t *>(data))
-      date_t(*reinterpret_cast<date_t *>(const_cast<char *>(rhs.data)));
-    break;
-
-  case AMOUNT:
-    new(reinterpret_cast<amount_t *>(data))
-      amount_t(*reinterpret_cast<amount_t *>
-	       (const_cast<char *>(rhs.data)));
-    break;
-
-  case BALANCE:
-    *reinterpret_cast<balance_t **>(data) =
-      new balance_t(**reinterpret_cast<balance_t **>
-		    (const_cast<char *>(rhs.data)));
-    break;
-
-  case BALANCE_PAIR:
-    *reinterpret_cast<balance_pair_t **>(data) =
-      new balance_pair_t(**reinterpret_cast<balance_pair_t **>
-			 (const_cast<char *>(rhs.data)));
-    break;
-
-  case STRING:
-    new(reinterpret_cast<string *>(data))
-      string(*reinterpret_cast<string *>(const_cast<char *>(rhs.data)));
-    break;
-
-  case SEQUENCE:
-    *reinterpret_cast<sequence_t **>(data) =
-      new sequence_t(**reinterpret_cast<sequence_t **>
-		     (const_cast<char *>(rhs.data)));
-    break;
-
-  default:
-    // The rest are fundamental types, which can be copied using
-    // std::memcpy
-    std::memcpy(data, rhs.data, sizeof(data));
-    break;
-  }
-
-  return *this;
-}
-
-void value_t::storage_t::destroy()
-{
-  switch (type) {
-  case AMOUNT:
-    reinterpret_cast<amount_t *>(data)->~amount_t();
-    break;
-  case BALANCE:
-    checked_delete(*reinterpret_cast<balance_t **>(data));
-    break;
-  case BALANCE_PAIR:
-    checked_delete(*reinterpret_cast<balance_pair_t **>(data));
-    break;
-  case STRING:
-    reinterpret_cast<string *>(data)->~string();
-    break;
-  case SEQUENCE:
-    checked_delete(*reinterpret_cast<sequence_t **>(data));
-    break;
-  case POINTER:
-    reinterpret_cast<boost::any *>(data)->~any();
-    break;
-
-  default:
-    break;
-  }
-  type = VOID;
-}
-
-void value_t::initialize()
-{
-  LOGGER("value.initialize");
-
-  true_value = new storage_t;
-  true_value->type = BOOLEAN;
-  *reinterpret_cast<bool *>(true_value->data) = true;
-
-  false_value = new storage_t;
-  false_value->type = BOOLEAN;
-  *reinterpret_cast<bool *>(false_value->data) = false;
-
-#if 0
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(bool));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(datetime_t));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(date_t));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(long));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(amount_t));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(balance_t *));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(balance_pair_t *));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(string));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(sequence_t *));
-  BOOST_STATIC_ASSERT(sizeof(amount_t) >= sizeof(boost::any));
-#endif
-
-  DEBUG_(std::setw(3) << std::right << sizeof(bool)
-	 << "  sizeof(bool)");
-  DEBUG_(std::setw(3) << std::right << sizeof(datetime_t)
-	 << "  sizeof(datetime_t)");
-  DEBUG_(std::setw(3) << std::right << sizeof(date_t)
-	 << "  sizeof(date_t)");
-  DEBUG_(std::setw(3) << std::right << sizeof(long)
-	 << "  sizeof(long)");
-  DEBUG_(std::setw(3) << std::right << sizeof(amount_t)
-	 << "  sizeof(amount_t)");
-  DEBUG_(std::setw(3) << std::right << sizeof(balance_t *)
-	 << "  sizeof(balance_t *)");
-  DEBUG_(std::setw(3) << std::right << sizeof(balance_pair_t *)
-	 << "  sizeof(balance_pair_t *)");
-  DEBUG_(std::setw(3) << std::right << sizeof(string)
-	 << "  sizeof(string)");
-  DEBUG_(std::setw(3) << std::right << sizeof(sequence_t *)
-	 << "  sizeof(sequence_t *)");
-  DEBUG_(std::setw(3) << std::right << sizeof(boost::any)
-	 << "  sizeof(boost::any)");
-}
-
-void value_t::shutdown()
-{
-  true_value  = intrusive_ptr<storage_t>();
-  false_value = intrusive_ptr<storage_t>();
-}
-
-void value_t::_dup()
-{
-  assert(storage);
-  if (storage->refc > 1)
-    storage = new storage_t(*storage.get());
-}
-
-value_t::operator bool() const
-{
-  switch (type()) {
-  case BOOLEAN:
-    return as_boolean();
-  case DATETIME:
-    return is_valid(as_datetime());
-  case DATE:
-    return is_valid(as_date());
-  case INTEGER:
-    return as_long();
-  case AMOUNT:
-    return as_amount();
-  case BALANCE:
-    return as_balance();
-  case BALANCE_PAIR:
-    return as_balance_pair();
-  case STRING:
-    return ! as_string().empty();
-  case SEQUENCE:
-    return ! as_sequence().empty();
-  case POINTER:
-    return ! as_any_pointer().empty();
-  default:
-    assert(false);
-    break;
-  }
-  assert(false);
-  return 0;
-}
-
-bool value_t::to_boolean() const
-{
-  if (is_boolean()) {
-    return as_boolean();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(BOOLEAN);
-    return temp.as_boolean();
-  }
-}
-
-datetime_t value_t::to_datetime() const
-{
-  if (is_datetime()) {
-    return as_datetime();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(DATETIME);
-    return temp.as_datetime();
-  }
-}
-
-date_t value_t::to_date() const
-{
-  if (is_date()) {
-    return as_date();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(DATE);
-    return temp.as_date();
-  }
-}
-
-long value_t::to_long() const
-{
-  if (is_long()) {
-    return as_long();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(INTEGER);
-    return temp.as_long();
-  }
-}
-
-amount_t value_t::to_amount() const
-{
-  if (is_amount()) {
-    return as_amount();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(AMOUNT);
-    return temp.as_amount();
-  }
-}
-
-balance_t value_t::to_balance() const
-{
-  if (is_balance()) {
-    return as_balance();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(BALANCE);
-    return temp.as_balance();
-  }
-}
-
-balance_pair_t value_t::to_balance_pair() const
-{
-  if (is_balance_pair()) {
-    return as_balance_pair();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(BALANCE_PAIR);
-    return temp.as_balance_pair();
-  }
-}
-
-string value_t::to_string() const
-{
-  if (is_string()) {
-    return as_string();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(STRING);
-    return temp.as_string();
-  }
-}
-
-value_t::sequence_t value_t::to_sequence() const
-{
-  if (is_sequence()) {
-    return as_sequence();
-  } else {
-    value_t temp(*this);
-    temp.in_place_cast(SEQUENCE);
-    return temp.as_sequence();
-  }
-}
-
-
-void value_t::in_place_simplify()
-{
-  LOGGER("amounts.values.simplify");
-
-  if (is_realzero()) {
-    DEBUG_("Zeroing type " << static_cast<int>(type()));
-    set_long(0L);
-    return;
-  }
-
-  if (is_balance_pair() &&
-      (! as_balance_pair().cost || as_balance_pair().cost->is_realzero())) {
-    DEBUG_("Reducing balance pair to balance");
-    in_place_cast(BALANCE);
-  }
-
-  if (is_balance() && as_balance().amounts.size() == 1) {
-    DEBUG_("Reducing balance to amount");
-    DEBUG("ledger.value.reduce", "as a balance it looks like: " << *this);
-    in_place_cast(AMOUNT);
-    DEBUG("ledger.value.reduce", "as an amount it looks like: " << *this);
-  }
-
-#if 0
-  if (is_amount() && ! as_amount().has_commodity() &&
-      as_amount().fits_in_long()) {
-    DEBUG_("Reducing amount to integer");
-    in_place_cast(INTEGER);
-  }
-#endif
-}
-
-value_t& value_t::operator+=(const value_t& val)
-{
-  if (is_string()) {
-    if (val.is_string())
-      as_string_lval() += val.as_string();
-    else
-      as_string_lval() += val.to_string();
-    return *this;
-  }
-  else if (is_sequence()) {
-    if (val.is_sequence()) {
-      sequence_t& seq(as_sequence_lval());
-      seq.insert(seq.end(), val.as_sequence().begin(),
-		 val.as_sequence().end());
-    } else {
-      as_sequence_lval().push_back(val);
-    }
-    return *this;
-  }
-
-  switch (type()) {
-  case DATETIME:
-    switch (val.type()) {
-    case INTEGER:
-      as_datetime_lval() += date_duration(val.as_long());
-      return *this;
-    case AMOUNT:
-      as_datetime_lval() += date_duration(val.as_amount().to_long());
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case DATE:
-    switch (val.type()) {
-    case INTEGER:
-      as_date_lval() += date_duration_t(val.as_long());
-      return *this;
-    case AMOUNT:
-      as_date_lval() += date_duration_t(val.as_amount().to_long());
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      as_long_lval() += val.as_long();
-      return *this;
-    case AMOUNT:
-      in_place_cast(AMOUNT);
-      as_amount_lval() += val.as_amount();
-      return *this;
-    case BALANCE:
-      in_place_cast(BALANCE);
-      as_balance_lval() += val.as_balance();
-      return *this;
-    case BALANCE_PAIR:
-      in_place_cast(BALANCE_PAIR);
-      as_balance_pair_lval() += val.as_balance_pair();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      if (as_amount().has_commodity()) {
-	in_place_cast(BALANCE);
-	return *this += val;
-      } else {
-	as_amount_lval() += val.as_long();
-	return *this;
-      }
-      break;
-
-    case AMOUNT:
-      if (as_amount().commodity() != val.as_amount().commodity()) {
-	in_place_cast(BALANCE);
-	return *this += val;
-      } else {
-	as_amount_lval() += val.as_amount();
-	return *this;
-      }
-      break;
-
-    case BALANCE:
-      in_place_cast(BALANCE);
-      as_balance_lval() += val.as_balance();
-      return *this;
-
-    case BALANCE_PAIR:
-      in_place_cast(BALANCE_PAIR);
-      as_balance_pair_lval() += val.as_balance_pair();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_lval() += val.to_amount();
-      return *this;
-    case AMOUNT:
-      as_balance_lval() += val.as_amount();
-      return *this;
-    case BALANCE:
-      as_balance_lval() += val.as_balance();
-      return *this;
-    case BALANCE_PAIR:
-      in_place_cast(BALANCE_PAIR);
-      as_balance_pair_lval() += val.as_balance_pair();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE_PAIR:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_pair_lval() += val.to_amount();
-      return *this;
-    case AMOUNT:
-      as_balance_pair_lval() += val.as_amount();
-      return *this;
-    case BALANCE:
-      as_balance_pair_lval() += val.as_balance();
-      return *this;
-    case BALANCE_PAIR:
-      as_balance_pair_lval() += val.as_balance_pair();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot add " << val.label() << " to " << label());
-  return *this;
-}
-
-value_t& value_t::operator-=(const value_t& val)
-{
-  if (is_sequence()) {
-    sequence_t& seq(as_sequence_lval());
-
-    if (val.is_sequence()) {
-      foreach (const value_t& v, val.as_sequence()) {
-	sequence_t::iterator j = std::find(seq.begin(), seq.end(), v);
-	if (j != seq.end())
-	  seq.erase(j);
-      }
-    } else {
-      sequence_t::iterator i = std::find(seq.begin(), seq.end(), val);
-      if (i != seq.end())
-	seq.erase(i);
-    }
-    return *this;
-  }
-
-  switch (type()) {
-  case DATETIME:
-    switch (val.type()) {
-    case INTEGER:
-      as_datetime_lval() -= date_duration(val.as_long());
-      return *this;
-    case AMOUNT:
-      as_datetime_lval() -= date_duration(val.as_amount().to_long());
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case DATE:
-    switch (val.type()) {
-    case INTEGER:
-      as_date_lval() -= date_duration_t(val.as_long());
-      return *this;
-    case AMOUNT:
-      as_date_lval() -= date_duration_t(val.as_amount().to_long());
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      as_long_lval() -= val.as_long();
-      return *this;
-    case AMOUNT:
-      in_place_cast(AMOUNT);
-      as_amount_lval() -= val.as_amount();
-      in_place_simplify();
-      return *this;
-    case BALANCE:
-      in_place_cast(BALANCE);
-      as_balance_lval() -= val.as_balance();
-      in_place_simplify();
-      return *this;
-    case BALANCE_PAIR:
-      in_place_cast(BALANCE_PAIR);
-      as_balance_pair_lval() -= val.as_balance_pair();
-      in_place_simplify();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      if (as_amount().has_commodity()) {
-	in_place_cast(BALANCE);
-	*this -= val;
-	in_place_simplify();
-	return *this;
-      } else {
-	as_amount_lval() -= val.as_long();
-	in_place_simplify();
-	return *this;
-      }
-      break;
-
-    case AMOUNT:
-      if (as_amount().commodity() != val.as_amount().commodity()) {
-	in_place_cast(BALANCE);
-	*this -= val;
-	in_place_simplify();
-	return *this;
-      } else {
-	as_amount_lval() -= val.as_amount();
-	in_place_simplify();
-	return *this;
-      }
-      break;
-
-    case BALANCE:
-      in_place_cast(BALANCE);
-      as_balance_lval() -= val.as_balance();
-      in_place_simplify();
-      return *this;
-
-    case BALANCE_PAIR:
-      in_place_cast(BALANCE_PAIR);
-      as_balance_pair_lval() -= val.as_balance_pair();
-      in_place_simplify();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_lval() -= val.to_amount();
-      in_place_simplify();
-      return *this;
-    case AMOUNT:
-      as_balance_lval() -= val.as_amount();
-      in_place_simplify();
-      return *this;
-    case BALANCE:
-      as_balance_lval() -= val.as_balance();
-      in_place_simplify();
-      return *this;
-    case BALANCE_PAIR:
-      in_place_cast(BALANCE_PAIR);
-      as_balance_pair_lval() -= val.as_balance_pair();
-      in_place_simplify();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE_PAIR:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_pair_lval() -= val.to_amount();
-      in_place_simplify();
-      return *this;
-    case AMOUNT:
-      as_balance_pair_lval() -= val.as_amount();
-      in_place_simplify();
-      return *this;
-    case BALANCE:
-      as_balance_pair_lval() -= val.as_balance();
-      in_place_simplify();
-      return *this;
-    case BALANCE_PAIR:
-      as_balance_pair_lval() -= val.as_balance_pair();
-      in_place_simplify();
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot subtract " << val.label() << " from " << label());
-
-  return *this;
-}
-
-value_t& value_t::operator*=(const value_t& val)
-{
-  if (is_string()) {
-    string temp;
-    long count = val.to_long();
-    for (long i = 0; i < count; i++)
-      temp += as_string();
-    set_string(temp);
-    return *this;
-  }
-  else if (is_sequence()) {
-    value_t temp;
-    long count = val.to_long();
-    for (long i = 0; i < count; i++)
-      temp += as_sequence();
-    return *this = temp;
-  }
-
-  switch (type()) {
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      as_long_lval() *= val.as_long();
-      return *this;
-    case AMOUNT:
-      set_amount(val.as_amount() * as_long());
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      as_amount_lval() *= val.as_long();
-      return *this;
-    case AMOUNT:
-      if (as_amount().commodity() == val.as_amount().commodity() ||
-	  ! val.as_amount().has_commodity()) {
-	as_amount_lval() *= val.as_amount();
-	return *this;
-      }
-      break;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_lval() *= val.as_long();
-      return *this;
-    case AMOUNT:
-      if (! val.as_amount().has_commodity()) {
-	as_balance_lval() *= val.as_amount();
-	return *this;
-      }
-      break;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE_PAIR:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_pair_lval() *= val.as_long();
-      return *this;
-    case AMOUNT:
-      if (! val.as_amount().has_commodity()) {
-	as_balance_pair_lval() *= val.as_amount();
-	return *this;
-      }
-      break;
-    default:
-      break;
-    }
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot multiply " << label() << " with " << val.label());
-
-  return *this;
-}
-
-value_t& value_t::operator/=(const value_t& val)
-{
-  switch (type()) {
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      as_long_lval() /= val.as_long();
-      return *this;
-    case AMOUNT:
-      set_amount(val.as_amount() / as_long());
-      return *this;
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      as_amount_lval() /= val.as_long();
-      return *this;
-
-    case AMOUNT:
-      if (as_amount().commodity() == val.as_amount().commodity() ||
-	  ! val.as_amount().has_commodity()) {
-	as_amount_lval() /= val.as_amount();
-	return *this;
-      }
-      break;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_lval() /= val.as_long();
-      return *this;
-    case AMOUNT:
-      if (! val.as_amount().has_commodity()) {
-	as_balance_lval() /= val.as_amount();
-	return *this;
-      }
-      break;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE_PAIR:
-    switch (val.type()) {
-    case INTEGER:
-      as_balance_pair_lval() /= val.as_long();
-      return *this;
-    case AMOUNT:
-      if (! val.as_amount().has_commodity()) {
-	as_balance_pair_lval() /= val.as_amount();
-	return *this;
-      }
-      break;
-    default:
-      break;
-    }
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot divide " << label() << " by " << val.label());
-
-  return *this;
-}
-
-
-bool value_t::operator==(const value_t& val) const
-{
-  switch (type()) {
-  case VOID:
-    return val.type() == VOID;
-    
-  case BOOLEAN:
-    if (val.is_boolean())
-      return as_boolean() == val.as_boolean();
-    break;
-
-  case DATETIME:
-    if (val.is_datetime())
-      return as_datetime() == val.as_datetime();
-    break;
-
-  case DATE:
-    if (val.is_date())
-      return as_date() == val.as_date();
-    break;
-
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      return as_long() == val.as_long();
-    case AMOUNT:
-      return val.as_amount() == to_amount();
-    case BALANCE:
-      return val.as_balance() == to_amount();
-    case BALANCE_PAIR:
-      return val.as_balance_pair() == to_amount();
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      return as_amount() == val.as_long();
-    case AMOUNT:
-      return as_amount() == val.as_amount();
-    case BALANCE:
-      return val.as_balance() == as_amount();
-    case BALANCE_PAIR:
-      return val.as_balance_pair() == as_amount();
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE:
-    switch (val.type()) {
-    case INTEGER:
-      return as_balance() == val.to_amount();
-    case AMOUNT:
-      return as_balance() == val.as_amount();
-    case BALANCE:
-      return as_balance() == val.as_balance();
-    case BALANCE_PAIR:
-      return val.as_balance_pair() == as_balance();
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE_PAIR:
-    switch (val.type()) {
-    case INTEGER:
-      return as_balance_pair() == val.to_amount();
-    case AMOUNT:
-      return as_balance_pair() == val.as_amount();
-    case BALANCE:
-      return as_balance_pair() == val.as_balance();
-    case BALANCE_PAIR:
-      return as_balance_pair() == val.as_balance_pair();
-    default:
-      break;
-    }
-    break;
-
-  case STRING:
-    if (val.is_string())
-      return as_string() == val.as_string();
-    break;
-
-  case SEQUENCE:
-    if (val.is_sequence())
-      return as_sequence() == val.as_sequence();
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot compare " << label() << " to " << val.label());
-
-  return *this;
-}
-
-bool value_t::operator<(const value_t& val) const
-{
-  switch (type()) {
-  case DATETIME:
-    if (val.is_datetime())
-      return as_datetime() < val.as_datetime();
-    break;
-
-  case DATE:
-    if (val.is_date())
-      return as_date() < val.as_date();
-    break;
-
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      return as_long() < val.as_long();
-    case AMOUNT:
-      return val.as_amount() < as_long();
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      return as_amount() < val.as_long();
-    case AMOUNT:
-      return as_amount() < val.as_amount();
-    default:
-      break;
-    }
-    break;
-
-  case STRING:
-    if (val.is_string())
-      return as_string() < val.as_string();
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot compare " << label() << " to " << val.label());
-
-  return *this;
-}
-
-#if 0
-bool value_t::operator>(const value_t& val) const
-{
-  switch (type()) {
-  case DATETIME:
-    if (val.is_datetime())
-      return as_datetime() > val.as_datetime();
-    break;
-
-  case DATE:
-    if (val.is_date())
-      return as_date() > val.as_date();
-    break;
-
-  case INTEGER:
-    switch (val.type()) {
-    case INTEGER:
-      return as_long() > val.as_long();
-    case AMOUNT:
-      return val.as_amount() > as_long();
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT:
-    switch (val.type()) {
-    case INTEGER:
-      return as_amount() > val.as_long();
-    case AMOUNT:
-      return as_amount() > val.as_amount();
-    default:
-      break;
-    }
-    break;
-
-  case STRING:
-    if (val.is_string())
-      return as_string() > val.as_string();
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot compare " << label() << " to " << val.label());
-
-  return *this;
-}
-#endif
-
-void value_t::in_place_cast(type_t cast_type)
-{
-  if (type() == cast_type)
-    return;
-
-  if (cast_type == BOOLEAN) {
-    set_boolean(bool(*this));
-    return;
-  }
-  else if (cast_type == SEQUENCE) {
-    sequence_t temp;
-    if (! is_null())
-      temp.push_back(*this);
-    set_sequence(temp);
-    return;
-  }
-
-  switch (type()) {
-  case BOOLEAN:
-    switch (cast_type) {
-    case STRING:
-      set_string(as_boolean() ? "true" : "false");
-      return;
-    default:
-      break;
-    }
-    break;
-
-  case INTEGER:
-    switch (cast_type) {
-    case AMOUNT:
-      set_amount(as_long());
-      return;
-    case BALANCE:
-      set_balance(to_amount());
-      return;
-    case BALANCE_PAIR:
-      set_balance_pair(to_amount());
-      return;
-    case STRING:
-      set_string(lexical_cast<string>(as_long()));
-      return;
-    default:
-      break;
-    }
-    break;
-
-  case AMOUNT: {
-    const amount_t& amt(as_amount());
-    switch (cast_type) {
-    case INTEGER:
-      if (amt.is_null())
-	set_long(0L);
-      else
-	set_long(as_amount().to_long());
-      return;
-    case BALANCE:
-      if (amt.is_null())
-	set_balance(balance_t());
-      else
-	set_balance(as_amount()); // creates temporary
-      return;
-    case BALANCE_PAIR:
-      if (amt.is_null())
-	set_balance_pair(balance_pair_t());
-      else
-	set_balance_pair(as_amount()); // creates temporary
-      return;
-    case STRING:
-      if (amt.is_null())
-	set_string("");
-      else
-	set_string(as_amount().to_string());
-      return;
-    default:
-      break;
-    }
-    break;
-  }
-
-  case BALANCE:
-    switch (cast_type) {
-    case AMOUNT: {
-      const balance_t& temp(as_balance());
-      if (temp.amounts.size() == 1) {
-	// Because we are changing the current balance value to an amount
-	// value, and because set_amount takes a reference (and that memory is
-	// about to be repurposed), we must pass in a copy.
-	set_amount(amount_t((*temp.amounts.begin()).second));
-	return;
-      }
-      else if (temp.amounts.size() == 0) {
-	set_amount(0L);
-	return;
-      }
-      else {
-	throw_(value_error, "Cannot convert " << label() <<
-	       " with multiple commodities to " << label(cast_type));
-      }
-      break;
-    }
-    case BALANCE_PAIR:
-      set_balance_pair(as_balance());
-      return;
-    default:
-      break;
-    }
-    break;
-
-  case BALANCE_PAIR:
-    switch (cast_type) {
-    case AMOUNT: {
-      const balance_t& temp(as_balance_pair().quantity());
-      if (temp.amounts.size() == 1) {
-	set_amount(amount_t((*temp.amounts.begin()).second));
-	return;
-      }
-      else if (temp.amounts.size() == 0) {
-	set_amount(0L);
-	return;
-      }
-      else {
-	throw_(value_error, "Cannot convert " << label() <<
-	       " with multiple commodities to " << label(cast_type));
-      }
-      break;
-    }
-    case BALANCE:
-      // A temporary is required, becaues set_balance is going to wipe us out
-      // before assigned the value passed in.
-      set_balance(balance_t(as_balance_pair().quantity()));
-      return;
-    default:
-      break;
-    }
-    break;
-
-  case STRING:
-    switch (cast_type) {
-    case INTEGER: {
-      if (all(as_string(), is_digit())) {
-	set_long(lexical_cast<long>(as_string()));
-	return;
-      } else {
-	throw_(value_error,
-	       "Cannot convert string '" << *this << "' to an integer");
-      }
-      break;
-    }
-    case AMOUNT:
-      set_amount(amount_t(as_string()));
-      return;
-    default:
-      break;
-    }
-    break;
-
-  default:
-    break;
-  }
-
-  throw_(value_error,
-	 "Cannot convert " << label() << " to " << label(cast_type));
-}
-
-void value_t::in_place_negate()
-{
-  switch (type()) {
-  case BOOLEAN:
-    set_boolean(! as_boolean());
-    return;
-  case INTEGER:
-  case DATETIME:
-    set_long(- as_long());
-    return;
-  case DATE:
-    set_long(- as_long());
-    return;
-  case AMOUNT:
-    as_amount_lval().in_place_negate();
-    return;
-  case BALANCE:
-    as_balance_lval().in_place_negate();
-    return;
-  case BALANCE_PAIR:
-    as_balance_pair_lval().in_place_negate();
-    return;
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot negate " << label());
-}
-
-bool value_t::is_realzero() const
-{
-  switch (type()) {
-  case BOOLEAN:
-    return ! as_boolean();
-  case INTEGER:
-    return as_long() == 0;
-  case DATETIME:
-    return ! is_valid(as_datetime());
-  case DATE:
-    return ! is_valid(as_date());
-  case AMOUNT:
-    return as_amount().is_realzero();
-  case BALANCE:
-    return as_balance().is_realzero();
-  case BALANCE_PAIR:
-    return as_balance_pair().is_realzero();
-  case STRING:
-    return as_string().empty();
-  case SEQUENCE:
-    return as_sequence().empty();
-
-  case POINTER:
-    return as_any_pointer().empty();
-
-  default:
-    assert(false);
-    break;
-  }
-  assert(false);
-  return true;
-}
-
-bool value_t::is_zero() const
-{
-  switch (type()) {
-  case BOOLEAN:
-    return ! as_boolean();
-  case INTEGER:
-    return as_long() == 0;
-  case DATETIME:
-    return ! is_valid(as_datetime());
-  case DATE:
-    return ! is_valid(as_date());
-  case AMOUNT:
-    return as_amount().is_zero();
-  case BALANCE:
-    return as_balance().is_zero();
-  case BALANCE_PAIR:
-    return as_balance_pair().is_zero();
-  case STRING:
-    return as_string().empty();
-  case SEQUENCE:
-    return as_sequence().empty();
-
-  case POINTER:
-    return as_any_pointer().empty();
-
-  default:
-    assert(false);
-    break;
-  }
-  assert(false);
-  return true;
-}
-
-value_t value_t::value(const optional<datetime_t>& moment) const
-{
-  switch (type()) {
-  case INTEGER:
-    return *this;
-
-  case AMOUNT: {
-    if (optional<amount_t> val = as_amount().value(moment))
-      return *val;
-    return false;
-  }
-  case BALANCE: {
-    if (optional<balance_t> bal = as_balance().value(moment))
-      return *bal;
-    return false;
-  }
-  case BALANCE_PAIR: {
-    if (optional<balance_t> bal_pair =
-	as_balance_pair().quantity().value(moment))
-      return *bal_pair;
-    return false;
-  }
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot find the value of " << label());
-  return NULL_VALUE;
-}
-
-void value_t::in_place_reduce()
-{
-  switch (type()) {
-  case INTEGER:
-    return;
-  case AMOUNT:
-    as_amount_lval().in_place_reduce();
-    return;
-  case BALANCE:
-    as_balance_lval().in_place_reduce();
-    return;
-  case BALANCE_PAIR:
-    as_balance_pair_lval().in_place_reduce();
-    return;
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot reduce " << label());
-}
-
-value_t value_t::abs() const
-{
-  switch (type()) {
-  case INTEGER: {
-    long val = as_long();
-    if (val < 0)
-      return - val;
-    return val;
-  }
-  case AMOUNT:
-    return as_amount().abs();
-  case BALANCE:
-    return as_balance().abs();
-  case BALANCE_PAIR:
-    return as_balance_pair().abs();
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot abs " << label());
-  return NULL_VALUE;
-}
-
-value_t value_t::round() const
-{
-  switch (type()) {
-  case INTEGER:
-    return *this;
-  case AMOUNT:
-    return as_amount().round();
-  case BALANCE:
-    return as_balance().round();
-  case BALANCE_PAIR:
-    return as_balance_pair().round();
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot round " << label());
-  return NULL_VALUE;
-}
-
-value_t value_t::unround() const
-{
-  switch (type()) {
-  case INTEGER:
-    return *this;
-  case AMOUNT:
-    return as_amount().unround();
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot unround " << label());
-  return NULL_VALUE;
-}
-
-#if 0
-value_t value_t::annotated_price() const
-{
-  switch (type()) {
-  case AMOUNT: {
-    optional<amount_t> temp = as_amount().annotation_details().price;
-    if (! temp)
-      return false;
-    return *temp;
-  }
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot find the annotated price of " << label());
-  return NULL_VALUE;
-}
-
-value_t value_t::annotated_date() const
-{
-  switch (type()) {
-  case DATETIME:
-    return *this;
-  case DATE:
-    return *this;
-
-  case AMOUNT: {
-    optional<datetime_t> temp = as_amount().annotation_details().date;
-    if (! temp)
-      return false;
-    return *temp;
-  }
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot find the annotated date of " << label());
-  return NULL_VALUE;
-}
-
-value_t value_t::annotated_tag() const
-{
-  switch (type()) {
-  case AMOUNT: {
-    optional<string> temp = as_amount().annotation_details().tag;
-    if (! temp)
-      return false;
-    return string_value(*temp);
-  }
-
-  case STRING:
-    return *this;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot find the annotated tag of " << label());
-  return NULL_VALUE;
-}
-#endif
-
-value_t value_t::strip_annotations(const bool keep_price,
-				   const bool keep_date,
-				   const bool keep_tag) const
-{
-  switch (type()) {
-  case VOID:
-  case BOOLEAN:
-  case INTEGER:
-  case DATETIME:
-  case DATE:
-  case STRING:
-  case POINTER:
-    return *this;
-
-  case SEQUENCE: {
-    sequence_t temp;
-    foreach (const value_t& value, as_sequence())
-      temp.push_back(value.strip_annotations(keep_price, keep_date, keep_tag));
-    return temp;
-  }
-
-  case AMOUNT:
-    return as_amount().strip_annotations(keep_price, keep_date, keep_tag);
-  case BALANCE:
-    return as_balance().strip_annotations(keep_price, keep_date, keep_tag);
-  case BALANCE_PAIR:
-    return as_balance_pair().quantity().strip_annotations(keep_price, keep_date,
-							  keep_tag);
-
-  default:
-    assert(false);
-    break;
-  }
-  assert(false);
-  return NULL_VALUE;
-}
-
-value_t value_t::cost() const
-{
-  switch (type()) {
-  case INTEGER:
-  case AMOUNT:
-  case BALANCE:
-    return *this;
-
-  case BALANCE_PAIR:
-    assert(as_balance_pair().cost);
-    if (as_balance_pair().cost)
-      return *(as_balance_pair().cost);
-    else
-      return as_balance_pair().quantity();
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot find the cost of " << label());
-  return NULL_VALUE;
-}
-
-value_t& value_t::add(const amount_t& amount, const optional<amount_t>& tcost)
-{
-  switch (type()) {
-  case INTEGER:
-  case AMOUNT:
-    if (tcost) {
-      in_place_cast(BALANCE_PAIR);
-      return add(amount, tcost);
-    }
-    else if ((is_amount() &&
-	      as_amount().commodity() != amount.commodity()) ||
-	     (! is_amount() && amount.commodity())) {
-      in_place_cast(BALANCE);
-      return add(amount, tcost);
-    }
-    else if (! is_amount()) {
-      in_place_cast(AMOUNT);
-    }
-    return *this += amount;
-
-  case BALANCE:
-    if (tcost) {
-      in_place_cast(BALANCE_PAIR);
-      return add(amount, tcost);
-    }
-    return *this += amount;
-
-  case BALANCE_PAIR:
-    as_balance_pair_lval().add(amount, tcost);
-    return *this;
-
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot add an amount to " << label());
-  return *this;
-}
-
-void value_t::dump(std::ostream& out, const int first_width,
-		   const int latter_width) const
-{
-  switch (type()) {
-  case VOID:
-    out << "VOID";
-    break;
-
-  case BOOLEAN:
-    out << as_boolean();
-    break;
-
-  case DATETIME:
-    out << format_datetime(as_datetime());
-    break;
-
-  case DATE:
-    out << format_date(as_date());
-    break;
-
-  case INTEGER:
-    out << as_long();
-    break;
-
-  case AMOUNT:
-    out << as_amount();
-    break;
-
-  case STRING:
-    out << as_string();
-    break;
-
-  case POINTER:
-    out << boost::unsafe_any_cast<const void *>(&as_any_pointer());
-    break;
-
-  case SEQUENCE: {
-    out << '(';
-    bool first = true;
-    foreach (const value_t& value, as_sequence()) {
-      if (first)
-	first = false;
-      else
-	out << ", ";
-
-      value.dump(out, first_width, latter_width);
-    }
-    out << ')';
-    break;
-  }
-
-  case BALANCE:
-    as_balance().print(out, first_width, latter_width);
-    break;
-  case BALANCE_PAIR:
-    as_balance_pair().print(out, first_width, latter_width);
-    break;
-  default:
-    assert(false);
-    break;
-  }
-}
-
-void value_t::print(std::ostream& out, const bool relaxed) const
-{
-  switch (type()) {
-  case VOID:
-    out << "";
-    break;
-
-  case BOOLEAN:
-    if (as_boolean())
-      out << "true";
-    else
-      out << "false";
-    break;
-
-  case INTEGER:
-    out << as_long();
-    break;
-
-  case AMOUNT:
-    if (! relaxed)
-      out << '{';
-    out << as_amount();
-    if (! relaxed)
-      out << '}';
-    break;
-
-  case BALANCE:
-  case BALANCE_PAIR:
-    assert(false);
-    break;
-
-  case DATETIME:
-    assert(false);
-    break;
-  case DATE:
-    out << '[' << format_date(as_date()) << ']';
-    break;
-
-  case STRING:
-    out << '"' << as_string() << '"';
-    break;
-
-  case POINTER:
-    assert(false);
-    break;
-
-  case SEQUENCE: {
-    out << '(';
-    bool first = true;
-    foreach (const value_t& value, as_sequence()) {
-      if (first)
-	first = false;
-      else
-	out << ", ";
-
-      value.print(out, relaxed);
-    }
-    out << ')';
-    break;
-  }
-  }
-}
-
-void value_t::read(const char *& data)
-{
-  switch (static_cast<value_t::type_t>(binary::read_long<int>(data))) {
-  case BOOLEAN:
-    set_boolean(binary::read_bool(data));
-    break;
-  case INTEGER:
-    set_long(binary::read_long<unsigned long>(data));
-    break;
-  case DATETIME:
-#if 0
-    // jww (2008-04-22): I need to record and read a datetime_t directly
-    set_datetime(read_long<unsigned long>(data));
-#endif
-    break;
-  case DATE:
-#if 0
-    // jww (2008-04-22): I need to record and read a date_t directly
-    set_date(read_long<unsigned long>(data));
-#endif
-    break;
-  case AMOUNT: {
-    amount_t temp;
-    temp.read(data);
-    set_amount(temp);
-    break;
-  }
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot read " << label() << " from a stream");
-}
-
-void value_t::write(std::ostream& out) const
-{
-  binary::write_long(out, static_cast<int>(type()));
-
-  switch (type()) {
-  case BOOLEAN:
-    binary::write_bool(out, as_boolean());
-    break;
-  case INTEGER:
-    binary::write_long(out, as_long());
-    break;
-  case DATETIME:
-#if 0
-    binary::write_number(out, as_datetime());
-#endif
-    break;
-  case DATE:
-#if 0
-    binary::write_number(out, as_date());
-#endif
-    break;
-  case AMOUNT:
-    as_amount().write(out);
-    break;
-  default:
-    break;
-  }
-
-  throw_(value_error, "Cannot read " << label() << " to a stream");
-}
-
-bool value_t::valid() const
-{
-  switch (type()) {
-  case AMOUNT:
-    return as_amount().valid();
-  case BALANCE:
-    return as_balance().valid();
-  case BALANCE_PAIR:
-    return as_balance_pair().valid();
-  default:
-    break;
-  }
-  return true;
-}
-
-} // namespace ledger