175 lines
4.9 KiB
C
175 lines
4.9 KiB
C
/*
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*******************************************************************************
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* Copyright (C) 2009-2016, International Business Machines Corporation and
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* others. All Rights Reserved.
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*******************************************************************************
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*/
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#ifndef __ZTRANS_H
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#define __ZTRANS_H
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/**
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* \file
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* \brief C API: Time zone transition classes
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "unicode/uobject.h"
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#ifndef UCNV_H
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/**
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* A TimeZoneTransition. Use the ztrans_* API to manipulate. Create with
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* ztrans_open*, and destroy with ztrans_close.
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*/
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struct ZTrans;
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typedef struct ZTrans ZTrans;
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#endif
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/**
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* Constructs a time zone transition with the time and the rules before/after
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* the transition.
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*
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* @param time The time of transition in milliseconds since the base time.
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* @param from The time zone rule used before the transition.
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* @param to The time zone rule used after the transition.
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*/
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U_CAPI ZTrans* U_EXPORT2
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ztrans_open(UDate time, const void* from, const void* to);
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/**
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* Constructs an empty <code>TimeZoneTransition</code>
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*/
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U_CAPI ZTrans* U_EXPORT2
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ztrans_openEmpty();
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/**
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* Disposes of the storage used by a ZTrans object. This function should
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* be called exactly once for objects returned by ztrans_open*.
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* @param trans the object to dispose of
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*/
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U_CAPI void U_EXPORT2
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ztrans_close(ZTrans *trans);
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/**
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* Returns a copy of this object.
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* @param rule the original ZRule
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* @return the newly allocated copy of the ZRule
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*/
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U_CAPI ZTrans* U_EXPORT2
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ztrans_clone(ZTrans *trans);
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/**
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* Returns true if trans1 is identical to trans2
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* and vis versa.
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* @param trans1 to be checked for containment
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* @param trans2 to be checked for containment
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* @return true if the test condition is met
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*/
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U_CAPI UBool U_EXPORT2
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ztrans_equals(const ZTrans* trans1, const ZTrans* trans2);
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/**
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* Returns the time of transition in milliseconds.
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* param trans, the transition to use
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* @return The time of the transition in milliseconds since the 1970 Jan 1 epoch time.
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*/
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U_CAPI UDate U_EXPORT2
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ztrans_getTime(ZTrans* trans);
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/**
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* Sets the time of transition in milliseconds.
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* param trans, the transition to use
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* @param time The time of the transition in milliseconds since the 1970 Jan 1 epoch time.
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*/
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U_CAPI void U_EXPORT2
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ztrans_setTime(ZTrans* trans, UDate time);
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/**
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* Returns the rule used before the transition.
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* param trans, the transition to use
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* @return The time zone rule used after the transition.
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*/
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U_CAPI void* U_EXPORT2
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ztrans_getFrom(ZTrans* & trans);
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/**
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* Sets the rule used before the transition. The caller remains
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* responsible for deleting the TimeZoneRule object.
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* param trans, the transition to use
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* param trans, the transition to use
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* @param from The time zone rule used before the transition.
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*/
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U_CAPI void U_EXPORT2
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ztrans_setFrom(ZTrans* trans, const void* from);
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/**
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* Adopts the rule used before the transition. The caller must
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* not delete the TimeZoneRule object passed in.
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* param trans, the transition to use
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* @param from The time zone rule used before the transition.
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*/
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U_CAPI void U_EXPORT2
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ztrans_adoptFrom(ZTrans* trans, void* from);
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/**
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* Returns the rule used after the transition.
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* param trans, the transition to use
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* @return The time zone rule used after the transition.
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*/
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U_CAPI void* U_EXPORT2
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ztrans_getTo(ZTrans* trans);
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/**
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* Sets the rule used after the transition. The caller remains
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* responsible for deleting the TimeZoneRule object.
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* param trans, the transition to use
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* @param to The time zone rule used after the transition.
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*/
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U_CAPI void U_EXPORT2
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ztrans_setTo(ZTrans* trans, const void* to);
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/**
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* Adopts the rule used after the transition. The caller must
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* not delete the TimeZoneRule object passed in.
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* param trans, the transition to use
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* @param to The time zone rule used after the transition.
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*/
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U_CAPI void U_EXPORT2
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ztrans_adoptTo(ZTrans* trans, void* to);
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/**
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* Return the class ID for this class. This is useful only for comparing to
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* a return value from getDynamicClassID(). For example:
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* <pre>
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* . Base* polymorphic_pointer = createPolymorphicObject();
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* . if (polymorphic_pointer->getDynamicClassID() ==
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* . erived::getStaticClassID()) ...
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* </pre>
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* param trans, the transition to use
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* @return The class ID for all objects of this class.
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*/
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U_CAPI UClassID U_EXPORT2
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ztrans_getStaticClassID(ZTrans* trans);
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/**
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* Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
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* method is to implement a simple version of RTTI, since not all C++
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* compilers support genuine RTTI. Polymorphic operator==() and clone()
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* methods call this method.
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*
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* param trans, the transition to use
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* @return The class ID for this object. All objects of a
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* given class have the same class ID. Objects of
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* other classes have different class IDs.
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*/
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U_CAPI UClassID U_EXPORT2
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ztrans_getDynamicClassID(ZTrans* trans);
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#endif
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#endif
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