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.
19 * @file FBaseInteger.h
20 * @brief This is the header file for the %Integer class.
22 * @see Number() class()
24 * This header file contains the declarations of the %Integer class.
26 #ifndef _FBASE_INTEGER_H_
27 #define _FBASE_INTEGER_H_
29 #include <FBaseNumber.h>
32 namespace Tizen { namespace Base
36 * @brief This class is the wrapper class for the @c signed @c int built-in type.
40 * The %Integer class represents an integer value ranging from -2147483648 to 2147483647,
41 * that is, -(2^31) to +((2^31)-1). This 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 %Integer (and @c int) to String, and %String
44 * to %Integer (and @c int).
46 * The following example demonstrates how to use the %Integer 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 Integer MINIMUM(1230);
61 * result r = E_SUCCESS;
64 * r = Integer::Parse(string, i);
70 * out = (MINIMUM.CompareTo(i) == 0) ? true: false;
78 class _OSP_EXPORT_ Integer
83 * Initializes this instance of %Integer with the specified value.
87 * @param[in] value An integer value
89 Integer(int value = 0);
92 * Copying of objects using this copy constructor is allowed.
96 * @param[in] value An instance of %Integer
98 Integer(const Integer& value);
101 * This destructor overrides Tizen::Base::Object::~Object().
105 virtual ~Integer(void);
108 * Copying of objects using this copy assignment operator is allowed.
112 * @param[in] rhs An instance of %Integer
114 Integer& operator =(const Integer& rhs);
117 * Compares two @c int values.
121 * @return A 32-bit @c signed integer value
123 * < 0 if the value of @c i1 is less than the value of @c i2
124 * == 0 if the value of @c i1 is equal to the value of @c i2
125 * > 0 if the value of @c i1 is greater than the value of @c i2
127 * @param[in] i1 The first @c int value to compare
128 * @param[in] i2 The second @c int value to compare
130 static int Compare(int i1, int i2);
133 * Compares the value of the current instance with the value of the specified instance of the %Integer class.
137 * @return A 32-bit @c signed integer value
140 * < 0 if the value of the current instance is less than the value of the specified instance
141 * == 0 if the value of the current instance is equal to the value of the specified instance
142 * > 0 if the value of the current instance is greater than the value of the specified instance
144 * @param[in] value An instance of the %Integer class to compare
146 int CompareTo(const Integer& value) const;
149 * Checks whether the value of the specified instance of Object is equal to the value of the current instance of %Integer.
153 * @return @c true if the value of the specified instance of Object is equal to the value of the current instance of %Integer, @n
155 * @param[in] obj An instance of Object to compare
156 * @see Tizen::Base::Object::Equals()
158 virtual bool Equals(const Object& obj) const;
161 * Decodes a string into a @c signed @c int.
165 * @return An error code
166 * @param[in] s A string representing the numeric value
167 * @param[out] ret The result of the operation
168 * @exception E_SUCCESS The method is successful.
169 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
170 * @remarks This method accepts decimal, hexadecimal, and octal numbers given by the
174 * Sign[opt] DecimalNumeral
175 * Sign[opt] 0x HexDigits
176 * Sign[opt] 0X HexDigits
177 * Sign[opt] # HexDigits
178 * Sign[opt] 0 OctalDigits
183 static result Decode(const String& s, int& ret);
186 * Gets the hash value of the current instance of %Integer.
190 * @return An integer value indicating the hash value of the current instance of %Integer
191 * @remarks Two equal instances must return the same hash value. For better performance,
192 * the used hash function must generate a random distribution for all inputs. @n
193 * The default implementation of this method returns the value of the current instance.
195 virtual int GetHashCode(void) const;
198 * Gets the hash value of the specified @c int value.
202 * @return An integer value indicating the hash value of the specified @c int value
203 * @param[in] val A @c int value to get the hash value
205 static int GetHashCode(int val);
208 * Parses the @c signed @c int equivalent of the specified string representing a numeric value.
212 * @return An error code
213 * @param[in] s A string representing a numeric value
214 * @param[out] ret The result of the operation
215 * @exception E_SUCCESS The method is successful.
216 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
218 * - This method assumes that the string representing the numeric value uses a radix 10.
219 * - This method guarantees that the original value of out-parameter is not changed when the method returns error.
221 static result Parse(const String& s, int& ret);
224 * Parses the @c signed @c int equivalent of the specified string representing a numeric value using the specified radix.
228 * @return An error code
229 * @param[in] s A string representing a numeric value
230 * @param[in] radix The radix of the string representing the numeric value @n
231 * It must either be 2, 8, 10, or 16.
232 * @param[out] ret The result of the operation
233 * @exception E_SUCCESS The method is successful.
234 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
235 * @exception E_OUT_OF_RANGE The specified @c radix is invalid.
236 * @remarks This method guarantees that the original value of out-parameter is not changed when the method returns error.
238 static result Parse(const String& s, int radix, int& ret);
241 * Gets the @c signed @c char equivalent of the current instance of the %Integer class.
245 * @return A @c signed @c char equivalent of the current instance
247 virtual char ToChar(void) const;
250 * Gets the @c signed @c short equivalent of the current instance of the %Integer class.
254 * @return A @c signed @c short equivalent of the current instance
256 virtual short ToShort(void) const;
259 * Gets the @c signed @c int equivalent of the current instance of the %Integer class.
263 * @return A @c signed @c int equivalent of the current instance
265 virtual int ToInt(void) const;
268 * Gets the @c signed @c long equivalent of the current instance of the %Integer class.
272 * @return A @c signed @c long equivalent of the current instance
274 virtual long ToLong(void) const;
277 * Gets the @c signed @c long @c long equivalent of the current instance of the %Integer class.
281 * @return A @c signed @c long @c long equivalent of the current instance
283 virtual long long ToLongLong(void) const;
286 * Gets the @c signed @c float equivalent of the current instance of the %Integer class.
290 * @return A @c signed @c float equivalent of the current instance
292 virtual float ToFloat(void) const;
295 * Gets the @c signed @c double equivalent of the current instance of the %Integer class.
299 * @return A @c signed @c double equivalent of the current instance
301 virtual double ToDouble(void) const;
304 * Gets the string representing the value of the current instance of the %Integer class.
308 * @return A string representing the value of the current instance
310 virtual String ToString(void) const;
313 * Gets the string representing the specified @c signed @c int value.
317 * @return A string containing a Unicode representation of the specified @c signed @c int value
318 * @param[in] value A @c signed @c int value to convert
320 static String ToString(int value);
323 * A constant holding the maximum value of type @c int. @n
324 * A @c short integer can hold a value of upto 2^31-1.
328 static const int VALUE_MAX = (int) 0x7FFFFFFF;
331 * A constant holding the minimum value of type @c int. @n
332 * A @c short integer can hold a value of upto -2^31.
336 static const int VALUE_MIN = (int) 0x80000000;
339 * An integer value of this instance.
347 friend class _IntegerImpl;
348 class _IntegerImpl * __pIntegerImpl;
354 #endif //_FBASE_INTEGER_H_