2 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
4 // Licensed under the Apache License, Version 2.0 (the License);
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
8 // http://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
18 * @file FBaseInteger.h
19 * @brief This is the header file for the %Integer class.
21 * @see Number() class()
23 * This header file contains the declarations of the %Integer class.
25 #ifndef _FBASE_INTEGER_H_
26 #define _FBASE_INTEGER_H_
28 #include <FBaseNumber.h>
31 namespace Tizen { namespace Base
35 * @brief This class is the wrapper class for the @c signed @c int built-in type.
39 * The %Integer class represents an integer value ranging from -2147483648 to 2147483647,
40 * that is, -(2^31) to +((2^31)-1). This class is useful when passing a 32-bit @c signed
41 * integral value to a method that accepts only an instance of Object. Furthermore,
42 * this class provides methods for converting %Integer (and @c int) to String, and %String
43 * to %Integer (and @c int).
45 * The following example demonstrates how to use the %Integer class.
51 * using namespace Tizen::Base;
53 * // This method checks whether the given string object contains a string
54 * // representation of the pre-defined minimum 32-bit integral value.
56 * MyClass::Verify(String& string, bool& out)
58 * static const Integer MINIMUM(1230);
60 * result r = E_SUCCESS;
63 * r = Integer::Parse(string, i);
69 * out = (MINIMUM.CompareTo(i) == 0) ? true: false;
77 class _OSP_EXPORT_ Integer
82 * Initializes this instance of %Integer with the specified value.
86 * @param[in] value An integer value
88 Integer(int value = 0);
91 * Copying of objects using this copy constructor is allowed.
95 * @param[in] value An instance of %Integer
97 Integer(const Integer& value);
100 * This destructor overrides Tizen::Base::Object::~Object().
104 virtual ~Integer(void);
107 * Copying of objects using this copy assignment operator is allowed.
111 * @param[in] rhs An instance of %Integer
113 Integer& operator =(const Integer& rhs);
116 * Compares two @c int values.
120 * @return A 32-bit @c signed integer value
122 * < 0 if the value of @c i1 is less than the value of @c i2
123 * == 0 if the value of @c i1 is equal to the value of @c i2
124 * > 0 if the value of @c i1 is greater than the value of @c i2
126 * @param[in] i1 The first @c int value to compare
127 * @param[in] i2 The second @c int value to compare
129 static int Compare(int i1, int i2);
132 * Compares the value of the current instance with the value of the specified instance of the %Integer 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 %Integer class to compare
145 int CompareTo(const Integer& value) const;
148 * Checks whether the value of the specified instance of Object is equal to the value of the current instance of %Integer.
152 * @return @c true if the value of the specified instance of Object is equal to the value of the current instance of %Integer, @n
154 * @param[in] obj An instance of Object to compare
155 * @see Tizen::Base::Object::Equals()
157 virtual bool Equals(const Object& obj) const;
160 * Decodes a string into a @c signed @c int.
164 * @return An error code
165 * @param[in] s A string representing the numeric value
166 * @param[out] ret The result of the operation
167 * @exception E_SUCCESS The method is successful.
168 * @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
169 * @remarks This method accepts decimal, hexadecimal, and octal numbers given by the
173 * Sign[opt] DecimalNumeral
174 * Sign[opt] 0x HexDigits
175 * Sign[opt] 0X HexDigits
176 * Sign[opt] # HexDigits
177 * Sign[opt] 0 OctalDigits
182 static result Decode(const String& s, int& ret);
185 * Gets the hash value of the current instance of %Integer.
189 * @return An integer value indicating the hash value of the current instance of %Integer
190 * @remarks Two equal instances must return the same hash value. For better performance,
191 * the used hash function must generate a random distribution for all inputs. @n
192 * The default implementation of this method returns the value of the current instance.
194 virtual int GetHashCode(void) const;
197 * Gets the hash value of the specified @c int value.
201 * @return An integer value indicating the hash value of the specified @c int value
202 * @param[in] val A @c int value to get the hash value
204 static int GetHashCode(int val);
207 * Parses the @c signed @c int 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, int& ret);
223 * Parses the @c signed @c int 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 the numeric value @n
230 * It must either be 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, int& ret);
240 * Gets the @c signed @c char equivalent of the current instance of the %Integer class.
244 * @return A @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 %Integer class.
253 * @return A @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 %Integer class.
262 * @return A @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 %Integer class.
271 * @return A @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 %Integer class.
280 * @return A @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 %Integer class.
289 * @return A @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 %Integer class.
298 * @return A @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 %Integer class.
307 * @return A string representing the value of the current instance
309 virtual String ToString(void) const;
312 * Gets the string representing the specified @c signed @c int value.
316 * @return A string containing a Unicode representation of the specified @c signed @c int value
317 * @param[in] value A @c signed @c int value to convert
319 static String ToString(int value);
322 * A constant holding the maximum value of type @c int. @n
323 * A @c short integer can hold a value of upto 2^31-1.
327 static const int VALUE_MAX = (int) 0x7FFFFFFF;
330 * A constant holding the minimum value of type @c int. @n
331 * A @c short integer can hold a value of upto -2^31.
335 static const int VALUE_MIN = (int) 0x80000000;
338 * An integer value of this instance.
346 friend class _IntegerImpl;
347 class _IntegerImpl * __pIntegerImpl;
353 #endif //_FBASE_INTEGER_H_