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/**
* Copyright (c) 2014, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef COMMON_TYPES_H_
#define COMMON_TYPES_H_
#include <string>
#include <vector>
#include "utils/string_utils.h"
namespace codegen {
/*
* Entity description, a set of text strings.
*/
typedef std::vector<std::string> Description;
/*
* Natural fraction class
*/
class Fraction {
public:
// Constructs fraction with value of 0/1
Fraction();
// Constructs fraction from given values
Fraction(int64_t numer, int64_t denumer);
// Parses string |literal| containing float point string definition, result is stored in
// |fraction| parameter.
// If |literal| can not be parsed, returns false.
static bool FromFloatPointString(const std::string& literal, Fraction* fraction);
// Field accessors
int64_t numer() const;
int64_t denumer() const;
private:
int64_t numer_;
int64_t denumer_;
};
/*
* Template class representing generic range with lower
* and upper bounds (min and max).
* Allows value or another range to be tested for inclusion.
* Range boundaries are always included in tests.
*/
template<typename T>
class BasicRange {
public:
typedef T value_type;
// Create a range with specified bounds
BasicRange(value_type min, value_type max)
: min_(min),
max_(max) {
Fraction::FromFloatPointString(NumberToString(min_), &min_fract_);
Fraction::FromFloatPointString(NumberToString(max_), &max_fract_);
}
// Constructs the range from given string representations of value.
// Used to avoid converting fractional boundaries to floating point
// Representation.
BasicRange(const std::string& min_str, const std::string& max_str)
: min_(0),
max_(0) {
bool valid_min = StringToNumber(min(), &min_)
&& Fraction::FromFloatPointString(min(), &min_fract_);
bool valid_max = StringToNumber(max(), &max_)
&& Fraction::FromFloatPointString(max(), &max_fract_);
assert(valid_min && valid_max);
}
// Tells if |value| belongs to current range (boundaries are included)
bool Includes(value_type value) const {
return min_ <= value && value <= max_;
}
// Tells if another range completely belongs to current range
// (boundaries are included)
bool Includes(const BasicRange& that) {
return min() <= that.min() && max() >= that.max();
}
// Field access methods
value_type min() const {
return min_;
}
value_type max() const {
return max_;
}
const Fraction& min_fract() const {
return min_fract_;
}
const Fraction& max_fract() const {
return max_fract_;
}
private:
value_type min_;
value_type max_;
Fraction min_fract_;
Fraction max_fract_;
};
} // namespace codegen
#endif /* COMMON_TYPES_H_ */
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