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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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****************************************************************************/
#if !defined(QMETAOBJECT_P_H) && !defined(UTILS_H)
# error "Include qmetaobject_p.h (or moc's utils.h) before including this file."
#endif
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/private/qglobal_p.h>
QT_BEGIN_NAMESPACE
// This function is shared with moc.cpp. This file should be included where needed.
static QByteArray normalizeTypeInternal(const char *t, const char *e, bool fixScope = false, bool adjustConst = true)
{
int len = e - t;
/*
Convert 'char const *' into 'const char *'. Start at index 1,
not 0, because 'const char *' is already OK.
*/
QByteArray constbuf;
for (int i = 1; i < len; i++) {
if ( t[i] == 'c'
&& strncmp(t + i + 1, "onst", 4) == 0
&& (i + 5 >= len || !is_ident_char(t[i + 5]))
&& !is_ident_char(t[i-1])
) {
constbuf = QByteArray(t, len);
if (is_space(t[i-1]))
constbuf.remove(i-1, 6);
else
constbuf.remove(i, 5);
constbuf.prepend("const ");
t = constbuf.data();
e = constbuf.data() + constbuf.length();
break;
}
/*
We mustn't convert 'char * const *' into 'const char **'
and we must beware of 'Bar<const Bla>'.
*/
if (t[i] == '&' || t[i] == '*' ||t[i] == '<')
break;
}
if (adjustConst && e > t + 6 && strncmp("const ", t, 6) == 0) {
if (*(e-1) == '&') { // treat const reference as value
t += 6;
--e;
} else if (is_ident_char(*(e-1)) || *(e-1) == '>') { // treat const value as value
t += 6;
}
}
QByteArray result;
result.reserve(len);
#if 1
// consume initial 'const '
if (strncmp("const ", t, 6) == 0) {
t+= 6;
result += "const ";
}
#endif
// some type substitutions for 'unsigned x'
if (strncmp("unsigned", t, 8) == 0) {
// make sure "unsigned" is an isolated word before making substitutions
if (!t[8] || !is_ident_char(t[8])) {
if (strncmp(" int", t+8, 4) == 0) {
t += 8+4;
result += "uint";
} else if (strncmp(" long", t+8, 5) == 0) {
if ((strlen(t + 8 + 5) < 4 || strncmp(t + 8 + 5, " int", 4) != 0) // preserve '[unsigned] long int'
&& (strlen(t + 8 + 5) < 5 || strncmp(t + 8 + 5, " long", 5) != 0) // preserve '[unsigned] long long'
) {
t += 8+5;
result += "ulong";
}
} else if (strncmp(" short", t+8, 6) != 0 // preserve unsigned short
&& strncmp(" char", t+8, 5) != 0) { // preserve unsigned char
// treat rest (unsigned) as uint
t += 8;
result += "uint";
}
}
} else {
// discard 'struct', 'class', and 'enum'; they are optional
// and we don't want them in the normalized signature
struct {
const char *keyword;
int len;
} optional[] = {
{ "struct ", 7 },
{ "class ", 6 },
{ "enum ", 5 },
{ 0, 0 }
};
int i = 0;
do {
if (strncmp(optional[i].keyword, t, optional[i].len) == 0) {
t += optional[i].len;
break;
}
} while (optional[++i].keyword != 0);
}
bool star = false;
while (t != e) {
char c = *t++;
if (fixScope && c == ':' && *t == ':' ) {
++t;
c = *t++;
int i = result.size() - 1;
while (i >= 0 && is_ident_char(result.at(i)))
--i;
result.resize(i + 1);
}
star = star || c == '*';
result += c;
if (c == '<') {
//template recursion
const char* tt = t;
int templdepth = 1;
int scopeDepth = 0;
while (t != e) {
c = *t++;
if (c == '{' || c == '(' || c == '[')
++scopeDepth;
if (c == '}' || c == ')' || c == ']')
--scopeDepth;
if (scopeDepth == 0) {
if (c == '<')
++templdepth;
if (c == '>')
--templdepth;
if (templdepth == 0 || (templdepth == 1 && c == ',')) {
result += normalizeTypeInternal(tt, t-1, fixScope, false);
result += c;
if (templdepth == 0) {
if (*t == '>')
result += ' '; // avoid >>
break;
}
tt = t;
}
}
}
}
// cv qualifers can appear after the type as well
if (!is_ident_char(c) && t != e && (e - t >= 5 && strncmp("const", t, 5) == 0)
&& (e - t == 5 || !is_ident_char(t[5]))) {
t += 5;
while (t != e && is_space(*t))
++t;
if (adjustConst && t != e && *t == '&') {
// treat const ref as value
++t;
} else if (adjustConst && !star) {
// treat const as value
} else if (!star) {
// move const to the front (but not if const comes after a *)
result.prepend("const ");
} else {
// keep const after a *
result += "const";
}
}
}
return result;
}
QT_END_NAMESPACE