/*
- time-description.cc -- implement Time_description
+ timing-translator.cc -- implement Timing_translator
source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "time-description.hh"
+#include "timing-translator.hh"
+#include "translator-group.hh"
#include "debug.hh"
-
-String
-Time_description::str()const
-{
- String s ("Time_description { ");
- if (cadenza_b_)
- s+=String (" (cadenza) ");
- s+= "at ";
- s+=when_;
- s+="\nmeter " + String (whole_per_measure_/one_beat_) +":" +
- String (Rational (Rational (1)/one_beat_));
- s+= "\nposition "+String (bars_i_) + ":"+ whole_in_measure_ +"\n}\n";
- return s;
-}
-
-void
-Time_description::print() const
-{
-#ifndef NPRINT
- DOUT << str();
-#endif
-}
-void
-Time_description::OK() const
-{
-#ifndef NDEBUG
- if (!cadenza_b_)
- assert (whole_in_measure_ < whole_per_measure_);
- assert (Moment (0) <= whole_in_measure_);
- assert (one_beat_);
-#endif
-}
-
-void
-Time_description::set_cadenza (bool b)
-{
- if (cadenza_b_ && !b) {
- if (whole_in_measure_) {
- bars_i_ ++; // should do?
- whole_in_measure_ = 0;
- }
- }
- cadenza_b_ = b ;
-}
-
-Time_description::Time_description()
-{
- error_b_ = false;
- whole_per_measure_ = 1;
- whole_in_measure_ =0;
- one_beat_ = Moment (1,4);
- when_ = 0;
- bars_i_ = 0;
- cadenza_b_ = false;
-}
-
-void
-Time_description::add (Moment dt)
-{
- assert (dt >= Rational (0));
- when_ += dt;
- whole_in_measure_ += dt;
-
- while ( !cadenza_b_ && whole_in_measure_ >= whole_per_measure_) {
- whole_in_measure_ -= whole_per_measure_;
- bars_i_ ++;
- }
-}
-
-void
-Time_description::set_meter (int l, int o)
-{
- assert (o);
- one_beat_ = Rational (1)/Moment (o);
- whole_per_measure_ = Moment (l) * one_beat_;
-}
-
-bool
-Time_description::allow_meter_change_b()
-{
- return!(whole_in_measure_);
-}
-
-/**
- retrieve error messages.
- @return
- error messages if not possible, "" if possible
- */
-String
-Time_description::try_set_partial_str (Moment p)const
-{
- if (p<Rational (0))
- return ("Partial must be non-negative");
- if (p > whole_per_measure_)
- return ("Partial measure too large");
- return "";
-}
-
-void
-Time_description::setpartial (Moment p)
-{
- whole_in_measure_ = whole_per_measure_ - p;
-}
-
-Moment
-Time_description::barleft()const
-{
- assert (!cadenza_b_);
- return whole_per_measure_-whole_in_measure_;
-}
-
-int
-Time_description::compare (Time_description const &t1, Time_description const&t2)
-{
- int i = sign (t1.when_-t2.when_);
-
- if (!i) {
- assert (t1.bars_i_==t2.bars_i_);
- assert (t1.one_beat_ == t2.one_beat_);
- assert (t1.whole_in_measure_ == t2.whole_in_measure_);
- assert (t1.whole_per_measure_ == t2.whole_per_measure_);
- }
-
- return i;
-}
-
-Moment
-Time_description::next_bar_moment() const
-{
- return when_ + barleft();
-}
-