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33 * Implements gmx::TimeUnitManager.
35 * \author Teemu Murtola <teemu.murtola@cbr.su.se>
36 * \ingroup module_options
38 #include "gromacs/options/timeunitmanager.h"
40 #include "gromacs/options/basicoptioninfo.h"
41 #include "gromacs/options/basicoptions.h"
42 #include "gromacs/options/options.h"
43 #include "gromacs/options/optionsvisitor.h"
44 #include "gromacs/utility/gmxassert.h"
50 * Enum values for a time unit.
52 * These must correspond to the TimeUnit enum in the header!
54 const char *const g_timeUnits[] = {
55 "fs", "ps", "ns", "us", "ms", "s", NULL
58 * Scaling factors from each time unit to internal units (=picoseconds).
60 * These must correspond to the TimeUnit enum in the header!
62 const double g_timeScaleFactors[] = {
63 1e-3, 1, 1e3, 1e6, 1e9, 1e12
71 TimeUnitManager::TimeUnitManager()
72 : timeUnit_(eTimeUnit_ps)
76 TimeUnitManager::TimeUnitManager(TimeUnit unit)
81 void TimeUnitManager::setTimeUnit(TimeUnit unit)
83 GMX_RELEASE_ASSERT(unit >= 0 && unit <= eTimeUnit_s,
88 const char *TimeUnitManager::timeUnitAsString() const
90 GMX_RELEASE_ASSERT(timeUnit_ >= 0 && timeUnit_ <= eTimeUnit_s,
92 return g_timeUnits[timeUnit_];
95 double TimeUnitManager::timeScaleFactor() const
97 GMX_RELEASE_ASSERT(timeUnit_ >= 0
98 && (size_t)timeUnit_ < sizeof(g_timeScaleFactors)/sizeof(g_timeScaleFactors[0]),
99 "Time unit index has become out-of-range");
100 return g_timeScaleFactors[timeUnit_];
103 double TimeUnitManager::inverseTimeScaleFactor() const
105 return 1.0 / timeScaleFactor();
108 void TimeUnitManager::addTimeUnitOption(Options *options, const char *name)
110 options->addOption(StringOption(name).enumValue(g_timeUnits)
111 .defaultValue(g_timeUnits[timeUnit()])
112 .storeEnumIndex(&timeUnit_)
113 .description("Unit for time values"));
120 * Option visitor that scales time options.
122 * \ingroup module_options
124 class TimeOptionScaler : public OptionsModifyingTypeVisitor<DoubleOptionInfo>
127 //! Initializes a scaler with the given factor.
128 explicit TimeOptionScaler(double factor) : factor_(factor) {}
130 void visitSubSection(Options *section)
132 OptionsModifyingIterator iterator(section);
133 iterator.acceptSubSections(this);
134 iterator.acceptOptions(this);
137 void visitOptionType(DoubleOptionInfo *option)
139 if (option->isTime())
141 option->setScaleFactor(factor_);
151 void TimeUnitManager::scaleTimeOptions(Options *options) const
153 double factor = timeScaleFactor();
154 TimeOptionScaler(factor).visitSubSection(options);