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3929 lines (3493 loc) · 147 KB
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/*
* simplecpp - A simple and high-fidelity C/C++ preprocessor library
* Copyright (C) 2016-2023 simplecpp team
*/
#if defined(_WIN32)
# ifndef _WIN32_WINNT
# define _WIN32_WINNT 0x0602
# endif
# ifndef NOMINMAX
# define NOMINMAX
# endif
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# undef ERROR
#endif
#include "simplecpp.h"
#if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
# define SIMPLECPP_WINDOWS
#endif
#include <algorithm>
#include <cassert>
#include <cctype>
#include <climits>
#include <cstddef> // IWYU pragma: keep
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <fstream>
#include <iostream>
#include <istream>
#include <limits>
#include <list>
#include <map>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <string>
#ifdef SIMPLECPP_WINDOWS
# include <mutex>
#endif
#include <unordered_map>
#include <utility>
#include <vector>
#ifdef _WIN32
# include <direct.h>
#else
# include <sys/stat.h>
#endif
static bool isHex(const std::string &s)
{
return s.size()>2 && (s.compare(0,2,"0x")==0 || s.compare(0,2,"0X")==0);
}
static bool isOct(const std::string &s)
{
return s.size()>1 && (s[0]=='0') && (s[1] >= '0') && (s[1] < '8');
}
// TODO: added an undercore since this conflicts with a function of the same name in utils.h from Cppcheck source when building Cppcheck with MSBuild
static bool isStringLiteral_(const std::string &s)
{
return s.size() > 1 && (s[0]=='\"') && (*s.rbegin()=='\"');
}
// TODO: added an undercore since this conflicts with a function of the same name in utils.h from Cppcheck source when building Cppcheck with MSBuild
static bool isCharLiteral_(const std::string &s)
{
// char literal patterns can include 'a', '\t', '\000', '\xff', 'abcd', and maybe ''
// This only checks for the surrounding '' but doesn't parse the content.
return s.size() > 1 && (s[0]=='\'') && (*s.rbegin()=='\'');
}
static const simplecpp::TokenString DEFINE("define");
static const simplecpp::TokenString UNDEF("undef");
static const simplecpp::TokenString INCLUDE("include");
static const simplecpp::TokenString ERROR("error");
static const simplecpp::TokenString WARNING("warning");
static const simplecpp::TokenString IF("if");
static const simplecpp::TokenString IFDEF("ifdef");
static const simplecpp::TokenString IFNDEF("ifndef");
static const simplecpp::TokenString DEFINED("defined");
static const simplecpp::TokenString ELSE("else");
static const simplecpp::TokenString ELIF("elif");
static const simplecpp::TokenString ENDIF("endif");
static const simplecpp::TokenString PRAGMA("pragma");
static const simplecpp::TokenString ONCE("once");
static const simplecpp::TokenString HAS_INCLUDE("__has_include");
template<class T> static std::string toString(T t)
{
// NOLINTNEXTLINE(misc-const-correctness) - false positive
std::ostringstream ostr;
ostr << t;
return ostr.str();
}
#ifdef SIMPLECPP_DEBUG_MACRO_EXPANSION
static std::string locstring(const simplecpp::Location &loc)
{
std::ostringstream ostr;
ostr << '[' << loc.file() << ':' << loc.line << ':' << loc.col << ']';
return ostr.str();
}
#endif
static long long stringToLL(const std::string &s)
{
long long ret;
const bool hex = isHex(s);
const bool oct = isOct(s);
std::istringstream istr(hex ? s.substr(2) : oct ? s.substr(1) : s);
if (hex)
istr >> std::hex;
else if (oct)
istr >> std::oct;
istr >> ret;
return ret;
}
static unsigned long long stringToULL(const std::string &s)
{
unsigned long long ret;
const bool hex = isHex(s);
const bool oct = isOct(s);
std::istringstream istr(hex ? s.substr(2) : oct ? s.substr(1) : s);
if (hex)
istr >> std::hex;
else if (oct)
istr >> std::oct;
istr >> ret;
return ret;
}
static bool endsWith(const std::string &s, const std::string &e)
{
return (s.size() >= e.size()) && std::equal(e.rbegin(), e.rend(), s.rbegin());
}
static bool sameline(const simplecpp::Token *tok1, const simplecpp::Token *tok2)
{
return tok1 && tok2 && tok1->location.sameline(tok2->location);
}
static bool isAlternativeBinaryOp(const simplecpp::Token *tok, const std::string &alt)
{
return (tok->name &&
tok->str() == alt &&
tok->previous &&
tok->next &&
(tok->previous->number || tok->previous->name || tok->previous->op == ')') &&
(tok->next->number || tok->next->name || tok->next->op == '('));
}
static bool isAlternativeUnaryOp(const simplecpp::Token *tok, const std::string &alt)
{
return ((tok->name && tok->str() == alt) &&
(!tok->previous || tok->previous->op == '(') &&
(tok->next && (tok->next->name || tok->next->number)));
}
static std::string replaceAll(std::string s, const std::string& from, const std::string& to)
{
for (size_t pos = s.find(from); pos != std::string::npos; pos = s.find(from, pos + to.size()))
s.replace(pos, from.size(), to);
return s;
}
void simplecpp::Location::adjust(const std::string &str)
{
if (strpbrk(str.c_str(), "\r\n") == nullptr) {
col += str.size();
return;
}
for (std::size_t i = 0U; i < str.size(); ++i) {
col++;
if (str[i] == '\n' || str[i] == '\r') {
col = 1;
line++;
if (str[i] == '\r' && (i+1)<str.size() && str[i+1]=='\n')
++i;
}
}
}
bool simplecpp::Token::isOneOf(const char ops[]) const
{
return (op != '\0') && (std::strchr(ops, op) != nullptr);
}
bool simplecpp::Token::startsWithOneOf(const char c[]) const
{
return std::strchr(c, string[0]) != nullptr;
}
bool simplecpp::Token::endsWithOneOf(const char c[]) const
{
return std::strchr(c, string[string.size() - 1U]) != nullptr;
}
void simplecpp::Token::printAll() const
{
const Token *tok = this;
while (tok->previous)
tok = tok->previous;
for (; tok; tok = tok->next) {
if (tok->previous) {
std::cout << (sameline(tok, tok->previous) ? ' ' : '\n');
}
std::cout << tok->str();
}
std::cout << std::endl;
}
void simplecpp::Token::printOut() const
{
for (const Token *tok = this; tok; tok = tok->next) {
if (tok != this) {
std::cout << (sameline(tok, tok->previous) ? ' ' : '\n');
}
std::cout << tok->str();
}
std::cout << std::endl;
}
// cppcheck-suppress noConstructor - we call init() in the inherited to initialize the private members
class simplecpp::TokenList::Stream {
public:
virtual ~Stream() = default;
virtual int get() = 0;
virtual int peek() = 0;
virtual void unget() = 0;
virtual bool good() = 0;
unsigned char readChar() {
auto ch = static_cast<unsigned char>(get());
// For UTF-16 encoded files the BOM is 0xfeff/0xfffe. If the
// character is non-ASCII character then replace it with 0xff
if (isUtf16) {
const auto ch2 = static_cast<unsigned char>(get());
const int ch16 = makeUtf16Char(ch, ch2);
ch = static_cast<unsigned char>(((ch16 >= 0x80) ? 0xff : ch16));
}
// Handling of newlines..
if (ch == '\r') {
ch = '\n';
int ch2 = get();
if (isUtf16) {
const int c2 = get();
ch2 = makeUtf16Char(ch2, c2);
}
if (ch2 != '\n')
ungetChar();
}
return ch;
}
unsigned char peekChar() {
auto ch = static_cast<unsigned char>(peek());
// For UTF-16 encoded files the BOM is 0xfeff/0xfffe. If the
// character is non-ASCII character then replace it with 0xff
if (isUtf16) {
(void)get();
const auto ch2 = static_cast<unsigned char>(peek());
unget();
const int ch16 = makeUtf16Char(ch, ch2);
ch = static_cast<unsigned char>(((ch16 >= 0x80) ? 0xff : ch16));
}
// Handling of newlines..
if (ch == '\r')
ch = '\n';
return ch;
}
void ungetChar() {
unget();
if (isUtf16)
unget();
}
protected:
void init() {
// initialize since we use peek() in getAndSkipBOM()
isUtf16 = false;
bom = getAndSkipBOM();
isUtf16 = (bom == 0xfeff || bom == 0xfffe);
}
private:
inline int makeUtf16Char(const unsigned char ch, const unsigned char ch2) const {
return (bom == 0xfeff) ? (ch<<8 | ch2) : (ch2<<8 | ch);
}
unsigned short getAndSkipBOM() {
const int ch1 = peek();
// The UTF-16 BOM is 0xfffe or 0xfeff.
if (ch1 >= 0xfe) {
(void)get();
const unsigned short byte = (static_cast<unsigned char>(ch1) << 8);
if (peek() >= 0xfe)
return byte | static_cast<unsigned char>(get());
unget();
return 0;
}
// Skip UTF-8 BOM 0xefbbbf
if (ch1 == 0xef) {
(void)get();
if (peek() == 0xbb) {
(void)get();
if (peek() == 0xbf) {
(void)get();
return 0;
}
unget();
}
unget();
}
return 0;
}
unsigned short bom;
protected:
bool isUtf16;
};
class StdIStream : public simplecpp::TokenList::Stream {
public:
// cppcheck-suppress uninitDerivedMemberVar - we call Stream::init() to initialize the private members
explicit StdIStream(std::istream &istr)
: istr(istr) {
assert(istr.good());
init();
}
int get() override {
return istr.get();
}
int peek() override {
return istr.peek();
}
void unget() override {
istr.unget();
}
bool good() override {
return istr.good();
}
private:
std::istream &istr;
};
class StdCharBufStream : public simplecpp::TokenList::Stream {
public:
// cppcheck-suppress uninitDerivedMemberVar - we call Stream::init() to initialize the private members
StdCharBufStream(const unsigned char* str, std::size_t size)
: str(str)
, size(size)
{
init();
}
int get() override {
if (pos >= size)
return lastStatus = EOF;
return str[pos++];
}
int peek() override {
if (pos >= size)
return lastStatus = EOF;
return str[pos];
}
void unget() override {
--pos;
}
bool good() override {
return lastStatus != EOF;
}
private:
const unsigned char *str;
const std::size_t size;
std::size_t pos{};
int lastStatus{};
};
class FileStream : public simplecpp::TokenList::Stream {
public:
/**
* @throws simplecpp::Output thrown if file is not found
*/
// cppcheck-suppress uninitDerivedMemberVar - we call Stream::init() to initialize the private members
explicit FileStream(const std::string &filename, std::vector<std::string> &files)
: file(fopen(filename.c_str(), "rb"))
{
if (!file) {
files.emplace_back(filename);
throw simplecpp::Output(simplecpp::Output::FILE_NOT_FOUND, {}, "File is missing: " + filename);
}
init();
}
FileStream(const FileStream&) = delete;
FileStream &operator=(const FileStream&) = delete;
~FileStream() override {
fclose(file);
file = nullptr;
}
int get() override {
lastStatus = lastCh = fgetc(file);
return lastCh;
}
int peek() override {
// keep lastCh intact
const int ch = fgetc(file);
unget_internal(ch);
return ch;
}
void unget() override {
unget_internal(lastCh);
}
bool good() override {
return lastStatus != EOF;
}
private:
void unget_internal(int ch) {
if (isUtf16) {
// TODO: use ungetc() as well
// UTF-16 has subsequent unget() calls
fseek(file, -1, SEEK_CUR);
} else
ungetc(ch, file);
}
FILE *file;
int lastCh{};
int lastStatus{};
};
simplecpp::TokenList::TokenList(std::vector<std::string> &filenames) : frontToken(nullptr), backToken(nullptr), files(filenames) {}
simplecpp::TokenList::TokenList(std::istream &istr, std::vector<std::string> &filenames, const std::string &filename, OutputList *outputList)
: frontToken(nullptr), backToken(nullptr), files(filenames)
{
StdIStream stream(istr);
readfile(stream,filename,outputList);
}
simplecpp::TokenList::TokenList(const unsigned char* data, std::size_t size, std::vector<std::string> &filenames, const std::string &filename, OutputList *outputList, int /*unused*/)
: frontToken(nullptr), backToken(nullptr), files(filenames)
{
StdCharBufStream stream(data, size);
readfile(stream,filename,outputList);
}
simplecpp::TokenList::TokenList(const std::string &filename, std::vector<std::string> &filenames, OutputList *outputList)
: frontToken(nullptr), backToken(nullptr), files(filenames)
{
try {
FileStream stream(filename, filenames);
readfile(stream,filename,outputList);
} catch (const simplecpp::Output & e) {
outputList->emplace_back(e);
}
}
simplecpp::TokenList::TokenList(const TokenList &other) : frontToken(nullptr), backToken(nullptr), files(other.files)
{
*this = other;
}
simplecpp::TokenList::TokenList(TokenList &&other) : frontToken(nullptr), backToken(nullptr), files(other.files)
{
*this = std::move(other);
}
simplecpp::TokenList::~TokenList()
{
clear();
}
simplecpp::TokenList &simplecpp::TokenList::operator=(const TokenList &other)
{
if (this != &other) {
clear();
files = other.files;
for (const Token *tok = other.cfront(); tok; tok = tok->next)
push_back(new Token(*tok));
sizeOfType = other.sizeOfType;
}
return *this;
}
simplecpp::TokenList &simplecpp::TokenList::operator=(TokenList &&other)
{
if (this != &other) {
clear();
frontToken = other.frontToken;
other.frontToken = nullptr;
backToken = other.backToken;
other.backToken = nullptr;
files = other.files;
sizeOfType = std::move(other.sizeOfType);
}
return *this;
}
void simplecpp::TokenList::clear()
{
backToken = nullptr;
while (frontToken) {
Token * const next = frontToken->next;
delete frontToken;
frontToken = next;
}
sizeOfType.clear();
}
void simplecpp::TokenList::push_back(Token *tok)
{
if (!frontToken)
frontToken = tok;
else
backToken->next = tok;
tok->previous = backToken;
backToken = tok;
}
void simplecpp::TokenList::dump(bool linenrs) const
{
std::cout << stringify(linenrs) << std::endl;
}
std::string simplecpp::TokenList::stringify(bool linenrs) const
{
std::ostringstream ret;
Location loc;
loc.line = 1;
bool filechg = true;
for (const Token *tok = cfront(); tok; tok = tok->next) {
if (tok->location.line < loc.line || tok->location.fileIndex != loc.fileIndex) {
ret << "\n#line " << tok->location.line << " \"" << file(tok->location) << "\"\n";
loc = tok->location;
filechg = true;
}
if (linenrs && filechg) {
ret << loc.line << ": ";
filechg = false;
}
while (tok->location.line > loc.line) {
ret << '\n';
loc.line++;
if (linenrs)
ret << loc.line << ": ";
}
if (sameline(tok->previous, tok))
ret << ' ';
ret << tok->str();
loc.adjust(tok->str());
}
return ret.str();
}
static bool isNameChar(unsigned char ch)
{
return std::isalnum(ch) || ch == '_' || ch == '$';
}
static std::string escapeString(const std::string &str)
{
std::ostringstream ostr;
ostr << '\"';
for (std::size_t i = 1U; i < str.size() - 1; ++i) {
const char c = str[i];
if (c == '\\' || c == '\"'
402E
|| c == '\'')
ostr << '\\';
ostr << c;
}
ostr << '\"';
return ostr.str();
}
static void portabilityBackslash(simplecpp::OutputList *outputList, const simplecpp::Location &location)
{
if (!outputList)
return;
simplecpp::Output err{
simplecpp::Output::PORTABILITY_BACKSLASH,
location,
"Combination 'backslash space newline' is not portable."
};
outputList->emplace_back(std::move(err));
}
static bool isStringLiteralPrefix(const std::string &str)
{
return str == "u" || str == "U" || str == "L" || str == "u8" ||
str == "R" || str == "uR" || str == "UR" || str == "LR" || str == "u8R";
}
void simplecpp::TokenList::lineDirective(unsigned int fileIndex, unsigned int line, Location &location)
{
if (fileIndex != location.fileIndex || line >= location.line) {
location.fileIndex = fileIndex;
location.line = line;
return;
}
if (line + 2 >= location.line) {
location.line = line;
while (cback()->op != '#')
deleteToken(back());
deleteToken(back());
return;
}
}
static const std::string COMMENT_END("*/");
void simplecpp::TokenList::readfile(Stream &stream, const std::string &filename, OutputList *outputList)
{
std::stack<simplecpp::Location> loc;
unsigned int multiline = 0U;
const Token *oldLastToken = nullptr;
Location location(fileIndex(filename), 1, 1);
while (stream.good()) {
unsigned char ch = stream.readChar();
if (!stream.good())
break;
if (ch >= 0x80) {
if (outputList) {
simplecpp::Output err{
simplecpp::Output::UNHANDLED_CHAR_ERROR,
location,
"The code contains unhandled character(s) (character code=" + std::to_string(static_cast<int>(ch)) + "). Neither unicode nor extended ascii is supported."
};
outputList->emplace_back(std::move(err));
}
clear();
return;
}
if (ch == '\n') {
if (cback() && cback()->op == '\\') {
if (location.col > cback()->location.col + 1U)
portabilityBackslash(outputList, cback()->location);
++multiline;
deleteToken(back());
} else {
location.line += multiline + 1;
multiline = 0U;
}
if (!multiline)
location.col = 1;
if (oldLastToken != cback()) {
oldLastToken = cback();
const Token * const llTok = isLastLinePreprocessor();
if (!llTok)
continue;
const Token * const llNextToken = llTok->next;
if (!llTok->next)
continue;
if (llNextToken->next) {
// #file "file.c"
if (llNextToken->str() == "file" &&
llNextToken->next->str()[0] == '\"')
{
const Token *strtok = cback();
while (strtok->comment)
strtok = strtok->previous;
loc.push(location);
location.fileIndex = fileIndex(strtok->str().substr(1U, strtok->str().size() - 2U));
location.line = 1U;
}
// TODO: add support for "# 3"
// #3 "file.c"
// #line 3 "file.c"
else if ((llNextToken->number &&
llNextToken->next->str()[0] == '\"') ||
(llNextToken->str() == "line" &&
llNextToken->next->number &&
llNextToken->next->next &&
llNextToken->next->next->str()[0] == '\"'))
{
const Token *strtok = cback();
while (strtok->comment)
strtok = strtok->previous;
const Token *numtok = strtok->previous;
while (numtok->comment)
numtok = numtok->previous;
lineDirective(fileIndex(replaceAll(strtok->str().substr(1U, strtok->str().size() - 2U),"\\\\","\\")),
std::atol(numtok->str().c_str()), location);
}
// #line 3
else if (llNextToken->str() == "line" &&
llNextToken->next->number)
{
const Token *numtok = cback();
while (numtok->comment)
numtok = numtok->previous;
lineDirective(location.fileIndex, std::atol(numtok->str().c_str()), location);
}
}
// #endfile
else if (llNextToken->str() == "endfile" && !loc.empty())
{
location = loc.top();
loc.pop();
}
}
continue;
}
if (ch <= ' ') {
location.col++;
continue;
}
TokenString currentToken;
if (cback() && cback()->location.line == location.line && cback()->previous && cback()->previous->op == '#') {
const Token* const ppTok = cback()->previous;
if (ppTok->next && (ppTok->next->str() == "error" || ppTok->next->str() == "warning")) {
char prev = ' ';
while (stream.good() && (prev == '\\' || (ch != '\r' && ch != '\n'))) {
currentToken += ch;
prev = ch;
ch = stream.readChar();
}
stream.ungetChar();
push_back(new Token(currentToken, location));
location.adjust(currentToken);
continue;
}
}
// number or name
if (isNameChar(ch)) {
const bool num = !!std::isdigit(ch);
while (stream.good() && isNameChar(ch)) {
currentToken += ch;
ch = stream.readChar();
if (num && ch=='\'' && isNameChar(stream.peekChar()))
ch = stream.readChar();
}
stream.ungetChar();
}
// comment
else if (ch == '/' && stream.peekChar() == '/') {
while (stream.good() && ch != '\n') {
currentToken += ch;
ch = stream.readChar();
if (ch == '\\') {
TokenString tmp;
char tmp_ch = ch;
while ((stream.good()) && (tmp_ch == '\\' || tmp_ch == ' ' || tmp_ch == '\t')) {
tmp += tmp_ch;
tmp_ch = stream.readChar();
}
if (!stream.good()) {
break;
}
if (tmp_ch != '\n') {
currentToken += tmp;
} else {
const TokenString check_portability = currentToken + tmp;
const std::string::size_type pos = check_portability.find_last_not_of(" \t");
if (pos < check_portability.size() - 1U && check_portability[pos] == '\\')
portabilityBackslash(outputList, location);
++multiline;
tmp_ch = stream.readChar();
currentToken += '\n';
}
ch = tmp_ch;
}
}
if (ch == '\n') {
stream.ungetChar();
}
}
// comment
else if (ch == '/' && stream.peekChar() == '*') {
currentToken = "/*";
(void)stream.readChar();
ch = stream.readChar();
while (stream.good()) {
currentToken += ch;
if (currentToken.size() >= 4U && endsWith(currentToken, COMMENT_END))
break;
ch = stream.readChar();
}
// multiline..
std::string::size_type pos = 0;
while ((pos = currentToken.find("\\\n",pos)) != std::string::npos) {
currentToken.erase(pos,2);
++multiline;
}
if (multiline || isLastLinePreprocessor()) {
pos = 0;
while ((pos = currentToken.find('\n',pos)) != std::string::npos) {
currentToken.erase(pos,1);
++multiline;
}
}
}
// string / char literal
else if (ch == '\"' || ch == '\'') {
std::string prefix;
if (cback() && cback()->name && isStringLiteralPrefix(cback()->str()) &&
((cback()->location.col + cback()->str().size()) == location.col) &&
(cback()->location.line == location.line)) {
prefix = cback()->str();
}
// C++11 raw string literal
if (ch == '\"' && !prefix.empty() && *cback()->str().rbegin() == 'R') {
std::string delim;
currentToken = ch;
prefix.resize(prefix.size() - 1);
ch = stream.readChar();
while (stream.good() && ch != '(' && ch != '\n') {
delim += ch;
ch = stream.readChar();
}
if (!stream.good() || ch == '\n') {
if (outputList) {
Output err{
Output::SYNTAX_ERROR,
location,
"Invalid newline in raw string delimiter."
};
outputList->emplace_back(std::move(err));
}
return;
}
const std::string endOfRawString(')' + delim + currentToken);
while (stream.good() && (!endsWith(currentToken, endOfRawString) || currentToken.size() <= 1))
currentToken += stream.readChar();
if (!endsWith(currentToken, endOfRawString)) {
if (outputList) {
Output err{
Output::SYNTAX_ERROR,
location,
"Raw string missing terminating delimiter."
};
outputList->emplace_back(std::move(err));
}
return;
}
currentToken.erase(currentToken.size() - endOfRawString.size(), endOfRawString.size() - 1U);
currentToken = escapeString(currentToken);
currentToken.insert(0, prefix);
back()->setstr(currentToken);
location.adjust(currentToken);
if (currentToken.find_first_of("\r\n") == std::string::npos)
location.col += 2 + (2 * delim.size());
else
location.col += 1 + delim.size();
continue;
}
currentToken = readUntil(stream,location,ch,ch,outputList);
if (currentToken.size() < 2U)
// Error is reported by readUntil()
return;
std::string s = currentToken;
std::string::size_type pos;
int newlines = 0;
while ((pos = s.find_first_of("\r\n")) != std::string::npos) {
s.erase(pos,1);
newlines++;
}
if (prefix.empty())
push_back(new Token(s, location, !!std::isspace(stream.peekChar()))); // push string without newlines
else
back()->setstr(prefix + s);
if (newlines > 0) {
const Token * const llTok = lastLineTok();
if (llTok && llTok->op == '#' && llTok->next && (llTok->next->str() == "define" || llTok->next->str() == "pragma") && llTok->next->next) {
multiline += newlines;
location.adjust(s);
continue;
}
}
location.adjust(currentToken);
continue;
}
else {
currentToken += ch;
}
if (*currentToken.begin() == '<') {
const Token * const llTok = lastLineTok();
if (llTok && llTok->op == '#' && llTok->next && llTok->next->str() == "include") {
currentToken = readUntil(stream, location, '<', '>', outputList);
if (currentToken.size() < 2U)
return;
}
}
push_back(new Token(currentToken, location, !!std::isspace(stream.peekChar())));
if (multiline)
location.col += currentToken.size();
else
location.adjust(currentToken);
}
combineOperators();
}
void simplecpp::TokenList::constFold()
{
while (cfront()) {
// goto last '('
Token *tok = back();
while (tok && tok->op != '(')
tok = tok->previous;
// no '(', goto first token
if (!tok)
tok = front();
// Constant fold expression
constFoldUnaryNotPosNeg(tok);
constFoldMulDivRem(tok);
constFoldAddSub(tok);
constFoldShift(tok);
constFoldComparison(tok);
constFoldBitwise(tok);
constFoldLogicalOp(tok);
constFoldQuestionOp(tok);
// If there is no '(' we are done with the constant folding
if (tok->op != '(')
break;
if (!tok->next || !tok->next->next || tok->next->next->op != ')')
break;
tok = tok->next;
deleteToken(tok->previous);
deleteToken(tok->next);
}
}
static bool isFloatSuffix(const simplecpp::Token *tok)