cppcheck/lib/platform.cpp

447 lines
13 KiB
C++

/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2023 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "platform.h"
#include "path.h"
#include <cstring>
#include <iostream>
#include <limits>
#include <vector>
#include <tinyxml2.h>
Platform::Platform()
{
set(Type::Native);
}
bool Platform::set(Type t)
{
switch (t) {
case Type::Unspecified: // unknown type sizes (sizes etc are set but are not known)
case Type::Native: // same as system this code was compile on
type = t;
sizeof_bool = sizeof(bool);
sizeof_short = sizeof(short);
sizeof_int = sizeof(int);
sizeof_long = sizeof(long);
sizeof_long_long = sizeof(long long);
sizeof_float = sizeof(float);
sizeof_double = sizeof(double);
sizeof_long_double = sizeof(long double);
sizeof_wchar_t = sizeof(wchar_t);
sizeof_size_t = sizeof(std::size_t);
sizeof_pointer = sizeof(void *);
if (type == Type::Unspecified) {
defaultSign = '\0';
} else {
defaultSign = std::numeric_limits<char>::is_signed ? 's' : 'u';
}
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Type::Win32W:
case Type::Win32A:
type = t;
sizeof_bool = 1; // 4 in Visual C++ 4.2
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 4;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 8;
sizeof_wchar_t = 2;
sizeof_size_t = 4;
sizeof_pointer = 4;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Type::Win64:
type = t;
sizeof_bool = 1;
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 4;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 8;
sizeof_wchar_t = 2;
sizeof_size_t = 8;
sizeof_pointer = 8;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Type::Unix32:
type = t;
sizeof_bool = 1;
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 4;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 12;
sizeof_wchar_t = 4;
sizeof_size_t = 4;
sizeof_pointer = 4;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Type::Unix64:
type = t;
sizeof_bool = 1;
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 8;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 16;
sizeof_wchar_t = 4;
sizeof_size_t = 8;
sizeof_pointer = 8;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Type::File:
// sizes are not set.
return false;
}
// unsupported platform
return false;
}
bool Platform::set(const std::string& platformstr, std::string& errstr, const std::vector<std::string>& paths, bool verbose)
{
if (platformstr == "win32A")
set(Type::Win32A);
else if (platformstr == "win32W")
set(Type::Win32W);
else if (platformstr == "win64")
set(Type::Win64);
else if (platformstr == "unix32")
set(Type::Unix32);
else if (platformstr == "unix64")
set(Type::Unix64);
else if (platformstr == "native")
set(Type::Native);
else if (platformstr == "unspecified")
set(Type::Unspecified);
else if (paths.empty()) {
errstr = "unrecognized platform: '" + platformstr + "' (no lookup).";
return false;
}
else {
bool found = false;
for (const std::string& path : paths) {
if (verbose)
std::cout << "looking for platform '" + platformstr + "' in '" + path + "'" << std::endl;
if (loadFromFile(path.c_str(), platformstr, verbose)) {
found = true;
break;
}
}
if (!found) {
errstr = "unrecognized platform: '" + platformstr + "'.";
return false;
}
}
return true;
}
bool Platform::loadFromFile(const char exename[], const std::string &filename, bool verbose)
{
// TODO: only append .xml if missing
// TODO: use native separators
std::vector<std::string> filenames{
filename,
filename + ".xml",
"platforms/" + filename,
"platforms/" + filename + ".xml"
};
if (exename && (std::string::npos != Path::fromNativeSeparators(exename).find('/'))) {
filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + filename);
filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename);
filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename + ".xml");
}
#ifdef FILESDIR
std::string filesdir = FILESDIR;
if (!filesdir.empty() && filesdir[filesdir.size()-1] != '/')
filesdir += '/';
filenames.push_back(filesdir + ("platforms/" + filename));
filenames.push_back(filesdir + ("platforms/" + filename + ".xml"));
#endif
// open file..
tinyxml2::XMLDocument doc;
bool success = false;
for (const std::string & f : filenames) {
if (verbose)
std::cout << "try to load platform file '" << f << "' ... ";
if (doc.LoadFile(f.c_str()) == tinyxml2::XML_SUCCESS) {
if (verbose)
std::cout << "Success" << std::endl;
success = true;
break;
}
if (verbose)
std::cout << doc.ErrorStr() << std::endl;
}
if (!success)
return false;
return loadFromXmlDocument(&doc);
}
static unsigned int xmlTextAsUInt(const tinyxml2::XMLElement* node, bool& error)
{
unsigned int retval = 0;
if (node->QueryUnsignedText(&retval) != tinyxml2::XML_SUCCESS)
error = true;
return retval;
}
bool Platform::loadFromXmlDocument(const tinyxml2::XMLDocument *doc)
{
const tinyxml2::XMLElement * const rootnode = doc->FirstChildElement();
if (!rootnode || std::strcmp(rootnode->Name(), "platform") != 0)
return false;
bool error = false;
for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
if (std::strcmp(node->Name(), "default-sign") == 0) {
const char* str = node->GetText();
if (str)
defaultSign = *str;
else
error = true;
} else if (std::strcmp(node->Name(), "char_bit") == 0)
char_bit = xmlTextAsUInt(node, error);
else if (std::strcmp(node->Name(), "sizeof") == 0) {
for (const tinyxml2::XMLElement *sz = node->FirstChildElement(); sz; sz = sz->NextSiblingElement()) {
if (std::strcmp(sz->Name(), "short") == 0)
sizeof_short = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "bool") == 0)
sizeof_bool = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "int") == 0)
sizeof_int = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "long") == 0)
sizeof_long = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "long-long") == 0)
sizeof_long_long = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "float") == 0)
sizeof_float = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "double") == 0)
sizeof_double = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "long-double") == 0)
sizeof_long_double = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "pointer") == 0)
sizeof_pointer = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "size_t") == 0)
sizeof_size_t = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "wchar_t") == 0)
sizeof_wchar_t = xmlTextAsUInt(sz, error);
}
}
}
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
type = Type::File;
return !error;
}
std::string Platform::getLimitsDefines(bool c99) const
{
std::string s;
// climits / limits.h
s += "CHAR_BIT=";
s += std::to_string(char_bit);
s += ";SCHAR_MIN=";
s += std::to_string(min_value(char_bit));
s += ";SCHAR_MAX=";
s += std::to_string(max_value(char_bit));
s += ";UCHAR_MAX=";
s += std::to_string(max_value(char_bit+1));
s += ";CHAR_MIN=";
if (defaultSign == 'u')
s += std::to_string(min_value(char_bit));
else
s += std::to_string(0);
s += ";CHAR_MAX=";
if (defaultSign == 'u')
s += std::to_string(max_value(char_bit+1));
else
s += std::to_string(max_value(char_bit));
// TODO
//s += ";MB_LEN_MAX=";
s += ";SHRT_MIN=";
s += std::to_string(min_value(short_bit));
s += ";SHRT_MAX=";
s += std::to_string(max_value(short_bit));
s += ";USHRT_MAX=";
s += std::to_string(max_value(short_bit+1));
s += ";INT_MIN=";
s += std::to_string(min_value(int_bit));
s += ";INT_MAX=";
s += std::to_string(max_value(int_bit));
s += ";UINT_MAX=";
s += std::to_string(max_value(int_bit+1));
s += ";LONG_MIN=";
s += std::to_string(min_value(long_bit));
s += ";LONG_MAX=";
s += std::to_string(max_value(long_bit));
s += ";ULONG_MAX=";
s += std::to_string(max_value(long_bit+1));
if (c99) {
s += ";LLONG_MIN=";
s += std::to_string(min_value(long_long_bit));
s += ";LLONG_MAX=";
s += std::to_string(max_value(long_long_bit));
s += ";ULLONG_MAX=";
s += std::to_string(max_value(long_long_bit + 1));
}
// cstdint / stdint.h
// FIXME: these are currently hard-coded in std.cfg
/*
INTMAX_MIN
INTMAX_MAX
UINTMAX_MAX
INTN_MIN
INTN_MAX
UINTN_MAX
INT_LEASTN_MIN
INT_LEASTN_MAX
UINT_LEASTN_MAX
INT_FASTN_MIN
INT_FASTN_MAX
UINT_FASTN_MAX
INTPTR_MIN
INTPTR_MAX
UINTPTR_MAX
SIZE_MAX
PTRDIFF_MIN
PTRDIFF_MAX
SIG_ATOMIC_MIN
SIG_ATOMIC_MAX
WCHAR_MIN
WCHAR_MAX
WINT_MIN
WINT_MAX
// function-like macros
// implemented in std.cfg
INTMAX_C
UINTMAX_C
INTN_C
UINTN_C
*/
// cfloat / float.h
/*
// TODO: implement
FLT_RADIX
FLT_MANT_DIG
DBL_MANT_DIG
LDBL_MANT_DIG
FLT_DIG
DBL_DIG
LDBL_DIG
FLT_MIN_EXP
DBL_MIN_EXP
LDBL_MIN_EXP
FLT_MIN_10_EXP
DBL_MIN_10_EXP
LDBL_MIN_10_EXP
FLT_MAX_EXP
DBL_MAX_EXP
LDBL_MAX_EXP
FLT_MAX_10_EXP
DBL_MAX_10_EXP
LDBL_MAX_10_EXP
FLT_MAX
DBL_MAX
LDBL_MAX
FLT_EPSILON
DBL_EPSILON
LDBL_EPSILON
FLT_MIN
DBL_MIN
LDBL_MIN
FLT_ROUNDS
// C99 / C++11 only
FLT_EVAL_METHOD
DECIMAL_DIG
*/
return s;
}
std::string Platform::getLimitsDefines(Standards::cstd_t cstd) const
{
return getLimitsDefines(cstd >= Standards::cstd_t::C99);
}
std::string Platform::getLimitsDefines(Standards::cppstd_t cppstd) const
{
return getLimitsDefines(cppstd >= Standards::cppstd_t::CPP11);
}