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/*
* Copyright (c) 2016 Novasys Ingénierie.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <stdlib.h>
#include <string>
#include "clang_headers.h"
#include "AddActionCall.h"
#include "ConnectCall.h"
#include "DisconnectCall.h"
#include "SingleShotCall.h"
#include "SlotCall.h"
using namespace std;
using namespace clang;
const list<SlotCall::processor> SlotCall::processors = list<SlotCall::processor>({
AddActionCall::processCallExpr,
ConnectCall::processCallExpr,
DisconnectCall::processCallExpr,
SingleShotCall::processCallExpr,
});
void
SlotCall::processCallExpr(Context &context, const CallExpr *expr)
{
bool matches;
for (processor p : processors) {
matches = p(context, expr);
if (matches) {
return;
}
}
}
bool
SlotCall::isnotspace(int c)
{
return !isspace(c);
}
void
SlotCall::ltrim(string &s)
{
s.erase(s.begin(), find_if(s.begin(), s.end(), isnotspace));
}
void
SlotCall::rtrim(string &s)
{
s.erase(find_if(s.rbegin(), s.rend(), isnotspace).base(), s.end());
}
void
SlotCall::trim(string &s)
{
ltrim(s);
rtrim(s);
}
string
SlotCall::getSource(const Expr *expr)
{
return Lexer::getSourceText(CharSourceRange::getTokenRange(expr->getSourceRange()),
_context._ci.getSourceManager(),
_context._ci.getLangOpts()).str();
}
string
SlotCall::getArgument(const string &s)
{
size_t start, end;
string arg;
start = s.find("(");
if (start == string::npos) {
return "";
}
start++;
end = s.find("(", start);
if (end == string::npos) {
return "";
}
arg = s.substr(start, end - start);
trim(arg);
return arg;
}
string
SlotCall::getRawType(const Expr *expr)
{
const CXXRecordDecl *decl;
decl = expr->IgnoreImpCasts()->getType()->getPointeeCXXRecordDecl();
if (decl == nullptr) {
return "";
}
return decl->getName();
}
bool SlotCall::checkSuppressionFromQtObjectHeader(const Expr *expr)
{
SourceLocation fileLoc = _context.getSourceMgr().getFileLoc(expr->getLocStart());
string s = _context.getSourceMgr().getFilename(fileLoc).str();
// Not as accurate as possible, but should do the job for everyone
return (s.find("/qobject.h") != string::npos);
}
bool
SlotCall::checkSuppression(const Expr *expr)
{
if (checkSuppressionFromQtObjectHeader(expr)) {
return true;
}
return false;
}
string
SlotCall::getSignal(const Expr *sender, const Expr *signal)
{
string source, type, arg, result;
size_t pos;
type = getRawType(sender);
if (type.empty()) {
_context.warn(sender->getLocStart(), "unable to identify type");
goto out;
}
source = getSource(signal);
pos = source.find("SIGNAL");
if (pos == string::npos) {
if (!checkSuppression(signal)) {
_context.warn(signal->getLocStart(), "no SIGNAL macro");
}
goto out;
}
arg = getArgument(source.substr(pos));
if (arg.empty()) {
_context.warn(signal->getLocStart(), "malformed SIGNAL macro usage");
goto out;
}
result.append("&").append(type).append("::").append(arg);
trim(result);
out:
return result;
}
string
SlotCall::getSlot(const Expr *receiver, const Expr *slot)
{
string source, type, arg, result;
size_t pos;
type = getRawType(receiver);
if (type.empty()) {
_context.warn(receiver->getLocStart(), "unable to identify type");
goto out;
}
source = getSource(slot);
pos = source.find("SLOT");
if (pos == string::npos) {
if (!checkSuppression(slot)) {
_context.warn(slot->getLocStart(), "no SLOT macro");
}
goto out;
}
arg = getArgument(source.substr(pos));
if (arg.empty()) {
_context.warn(slot->getLocStart(), "malformed SLOT macro usage");
goto out;
}
result.append("&").append(type).append("::").append(arg);
trim(result);
out:
return result;
}
void
SlotCall::replace(const clang::Expr *expr, const string &s)
{
pair<SourceLocation, SourceLocation> loc_pair =
_context.getSourceMgr().getExpansionRange(expr->getLocStart());
SourceRange range(loc_pair.first, loc_pair.second);
bool error = _context.ReplaceText(range, s);
if (error) {
_context.note(expr->getLocStart(), "unable to transform expression");
}
}
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