2 // Open Service Platform
3 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 // Licensed under the Apache License, Version 2.0 (the License);
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
20 * @brief This is the header file for the %Long class.
24 * This header file contains the declarations of the %Long class.
26 #ifndef _FBASE_LONG_H_
27 #define _FBASE_LONG_H_
29 #include <FBaseNumber.h>
32 namespace Tizen { namespace Base
36 * @brief This class is the wrapper class for the @c signed @c long built-in type.
40 * The %Long class represents an integer value ranging from -2147483648 to 2147483647
41 * , that is, -(2^31) to +((2^31)-1). The class is useful when passing a 32-bit @c signed
42 * integral value to a method that accepts only an instance of Object. Furthermore,
43 * this class provides methods for converting %Long (and @c long) to String, and %String
44 * to %Long (and @c long).
46 * The following example demonstrates how to use the %Long class.
52 * using namespace Tizen::Base;
54 * // This method checks whether the given string object contains a string
55 * // representation of the pre-defined minimum 32-bit integral value
57 * MyClass::Verify(String& string, bool& out)
59 * static const Long MINIMUM(1230);
60 * result r = E_SUCCESS;
63 * r = Long::Parse(string, l);
69 * out = (MINIMUM.CompareTo(l) == 0) ? true: false;
77 class _OSP_EXPORT_ Long
82 * Initializes this instance of %Long with the specified value.
86 * @param[in] value A @c long value
91 * Copying of objects using this copy constructor is allowed.
95 * @param[in] value An instance of %Long
97 Long(const Long& value);
100 * This destructor overrides Tizen::Base::Object::~Object().
107 * Copying of objects using this copy assignment operator is allowed.
111 * @param[in] rhs An instance of %Long
113 Long& operator =(const Long& rhs);
116 * Compares two @c long values.
120 * @return A 32-bit @c signed integer value
122 * < 0 if the value of @c l1 is less than the value of @c l2
123 * == 0 if the value of @c l1 is equal to the value of @c l2
124 * > 0 if the value of @c l1 is greater than the value of @c l2
126 * @param[in] l1 The first @c long value to compare
127 * @param[in] l2 The second @c long value to compare
129 static int Compare(long l1, long l2);
132 * Compares the value of the current instance with the value of the specified instance of the %Long class.
136 * @return A 32-bit @c signed integer value
139 * < 0 if the value of the current instance is less than the value of the specified instance
140 * == 0 if the value of the current instance is equal to the value of the specified instance
141 * > 0 if the value of the current instance is greater than the value of the specified instance
143 * @param[in] value An instance of the %Long class to compare
145 int CompareTo(const Long& value) const;
148 * Checks whether the value of the specified instance of %Object is equal to the value of the current instance of %Long.
152 * @return @c true if the value of the specified instance of %Object is equal to the value of the current instance of %Long, @n
154 * @param[in] obj An instance of %Object to compare
155 * @see Object::Equals()
157 virtual bool Equals(const Object& obj) const;
160 * Gets the hash value of the current instance of %Long.
164 * @return An integer value indicating the hash value of the current instance of %Long
165 * @remarks Two equal instances must return the same hash value. For better performance,
166 * the used hash function must generate a random distribution for all inputs. @n
167 * The default implementation of this method returns the value of the current instance.
169 virtual int GetHashCode(void) const;
172 * Gets the hash value of the specified @c long value.
176 * @return An integer value indicating the hash value of the specified @c long value
177 * @param[in] val A @c long value to get the hash value
179 static int GetHashCode(long val);
182 * Decodes a string into a @c signed @c long.
186 * @return An error code
187 * @param[in] s A string representing a numeric value
188 * @param[out] ret The result of the operation
189 * @exception E_SUCCESS The method is successful.
190 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
191 * @remarks This method accepts decimal, hexadecimal, and octal numbers given by the
195 * Sign[opt] DecimalNumeral
196 * Sign[opt] 0x HexDigits
197 * Sign[opt] 0X HexDigits
198 * Sign[opt] # HexDigits
199 * Sign[opt] 0 OctalDigits
204 static result Decode(const String& s, long& ret);
207 * Parses the @c signed @c long equivalent of the specified string representing a numeric value.
211 * @return An error code
212 * @param[in] s A string representing a numeric value
213 * @param[out] ret The result of the operation
214 * @exception E_SUCCESS The method is successful.
215 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
217 * - This method assumes that the string representing the numeric value uses a radix 10.
218 * - This method guarantees that the original value of out-parameter is not changed when the method returns error.
220 static result Parse(const String& s, long& ret);
223 * Parses the @c signed @c long equivalent of the specified string representing a numeric value using the specified radix.
227 * @return An error code
228 * @param[in] s A string representing a numeric value
229 * @param[in] radix The radix of the string representing a numeric value @n
230 * It must be either 2, 8, 10, or 16.
231 * @param[out] ret The result of the operation
232 * @exception E_SUCCESS The method is successful.
233 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
234 * @exception E_OUT_OF_RANGE The specified @c radix is invalid.
235 * @remarks This method guarantees that the original value of out-parameter is not changed when the method returns error.
237 static result Parse(const String& s, int radix, long& ret);
240 * Gets the @c signed @c char equivalent of the current instance of the %Long class.
244 * @return The @c signed @c char equivalent of the current instance
246 virtual char ToChar(void) const;
249 * Gets the @c signed @c short equivalent of the current instance of the %Long class.
253 * @return The @c signed @c short equivalent of the current instance
255 virtual short ToShort(void) const;
258 * Gets the @c signed @c int equivalent of the current instance of the %Long class.
262 * @return The @c signed @c int equivalent of the current instance
264 virtual int ToInt(void) const;
267 * Gets the @c signed @c long equivalent of the current instance of the %Long class.
271 * @return The @c signed @c long equivalent of the current instance
273 virtual long ToLong(void) const;
276 * Gets the @c signed @c long @c long equivalent of the current instance of the %Long class.
280 * @return The @c signed @c long @c long equivalent of the current instance
282 virtual long long ToLongLong(void) const;
285 * Gets the @c signed @c float equivalent of the current instance of the %Long class.
289 * @return The @c signed @c float equivalent of the current instance
291 virtual float ToFloat(void) const;
294 * Gets the @c signed @c double equivalent of the current instance of the %Long class.
298 * @return The @c signed @c double equivalent of the current instance
300 virtual double ToDouble(void) const;
303 * Gets the string representing the value of the current instance of the %Long class.
307 * @return The string representing the value of the current instance
309 virtual String ToString(void) const;
312 * Gets the string representing the specified @c signed @c long value.
316 * @return The string containing a Unicode representation of the specified @c signed @c long value
317 * @param[in] value A @c signed @c long value to convert
319 static String ToString(long value);
322 * A constant holding the maximum value a @c short can have; 2^31-1.
326 static const long VALUE_MAX = (long) 0x7FFFFFFF;
329 * A constant holding the minimum value a @c short can have; -2^31.
333 static const long VALUE_MIN = (long) 0x80000000;
336 * A @c long value of this instance.
344 friend class _LongImpl;
345 class _LongImpl * __pLongImpl;
351 #endif //_FBASE_LONG_H_