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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Claire Xenia Wolf <claire@yosyshq.com>
* Copyright (C) 2018 Serge Bazanski <q3k@q3k.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifndef PROPERTY_H
#define PROPERTY_H
#include <algorithm>
#include <cstdint>
#include <string>
#include <vector>
#include "nextpnr_assertions.h"
#include "nextpnr_namespaces.h"
NEXTPNR_NAMESPACE_BEGIN
struct Property
{
enum State : char
{
S0 = '0',
S1 = '1',
Sx = 'x',
Sz = 'z'
};
Property();
Property(int64_t intval, int width = 32);
Property(const std::string &strval);
Property(State bit);
Property &operator=(const Property &other) = default;
bool is_string;
// The string literal (for string values), or a string of [01xz] (for numeric values)
std::string str;
// The lower 64 bits (for numeric values), unused for string values
int64_t intval;
void update_intval()
{
intval = 0;
for (int i = 0; i < int(str.size()); i++) {
NPNR_ASSERT(str[i] == S0 || str[i] == S1 || str[i] == Sx || str[i] == Sz);
if ((str[i] == S1) && i < 64)
intval |= (1ULL << i);
}
}
int64_t as_int64() const
{
NPNR_ASSERT(!is_string);
return intval;
}
std::vector<bool> as_bits() const
{
std::vector<bool> result;
result.reserve(str.size());
NPNR_ASSERT(!is_string);
for (auto c : str)
result.push_back(c == S1);
return result;
}
const std::string &as_string() const
{
NPNR_ASSERT(is_string);
return str;
}
const char *c_str() const
{
NPNR_ASSERT(is_string);
return str.c_str();
}
size_t size() const { return is_string ? 8 * str.size() : str.size(); }
double as_double() const
{
NPNR_ASSERT(is_string);
return std::stod(str);
}
bool as_bool() const
{
if (int(str.size()) <= 64)
return intval != 0;
else
return std::any_of(str.begin(), str.end(), [](char c) { return c == S1; });
}
bool is_fully_def() const
{
return !is_string && std::all_of(str.begin(), str.end(), [](char c) { return c == S0 || c == S1; });
}
Property extract(int offset, int len, State padding = State::S0) const
{
Property ret;
ret.is_string = false;
ret.str.reserve(len);
for (int i = offset; i < offset + len; i++)
ret.str.push_back(i < int(str.size()) ? str[i] : char(padding));
ret.update_intval();
return ret;
}
// Convert to a string representation, escaping literal strings matching /^[01xz]* *$/ by adding a space at the end,
// to disambiguate from binary strings
std::string to_string() const;
// Convert a string of four-value binary [01xz], or a literal string escaped according to the above rule
// to a Property
static Property from_string(const std::string &s);
};
inline bool operator==(const Property &a, const Property &b) { return a.is_string == b.is_string && a.str == b.str; }
inline bool operator!=(const Property &a, const Property &b) { return a.is_string != b.is_string || a.str != b.str; }
NEXTPNR_NAMESPACE_END
#endif /* PROPERTY_H */
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