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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* Based on LLVM/Clang.
*
* This file is distributed under the University of Illinois Open Source
* License. See LICENSE.TXT for details.
*
*/
#ifndef LO_CLANG_SHARED_PLUGINS
#include "plugin.hxx"
#include "check.hxx"
#include "compat.hxx"
#include <clang/Lex/Lexer.h>
#include <fstream>
#include <set>
namespace
{
class SalLogAreas
: public loplugin::FilteringPlugin< SalLogAreas >
{
public:
explicit SalLogAreas( const loplugin::InstantiationData& data )
: FilteringPlugin(data), inFunction(nullptr) {}
bool preRun() override {
return true;
}
void run() override {
if (preRun())
{
lastSalDetailLogStreamMacro = SourceLocation();
TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
}
}
bool VisitFunctionDecl( const FunctionDecl* function );
bool VisitCallExpr( const CallExpr* call );
private:
void checkArea( StringRef area, SourceLocation location );
void checkAreaSyntax(StringRef area, SourceLocation location);
void readLogAreas();
const FunctionDecl* inFunction;
SourceLocation lastSalDetailLogStreamMacro;
std::set< std::string > logAreas;
#if 0
std::string firstSeenLogArea;
SourceLocation firstSeenLocation;
#endif
};
/*
This is a compile check.
Check area used in SAL_INFO/SAL_WARN macros against the list in include/sal/log-areas.dox and
report if the area is not listed there. The fix is either use a proper area or add it to the list
if appropriate.
*/
bool SalLogAreas::VisitFunctionDecl( const FunctionDecl* function )
{
inFunction = function;
return true;
}
bool SalLogAreas::VisitCallExpr( const CallExpr* call )
{
if( ignoreLocation( call ))
return true;
const FunctionDecl* func = call->getDirectCallee();
if( !func )
return true;
if( !( func->getNumParams() == 5 && func->getIdentifier() != NULL
&& ( func->getName() == "sal_detail_log" || func->getName() == "log" || func->getName() == "DbgUnhandledException")) )
return true;
auto tc = loplugin::DeclCheck(func);
enum class LogCallKind { Sal, DbgUnhandledException};
LogCallKind kind;
int areaArgIndex;
if( tc.Function("sal_detail_log") || tc.Function("log").Namespace("detail").Namespace("sal").GlobalNamespace() )
{
kind = LogCallKind::Sal; // fine
areaArgIndex = 1;
}
else if( tc.Function("DbgUnhandledException").GlobalNamespace() )
{
kind = LogCallKind::DbgUnhandledException; // ok
areaArgIndex = 3;
}
else
return true;
// The SAL_DETAIL_LOG_STREAM macro expands to two calls to sal::detail::log(),
// so do not warn repeatedly about the same macro (the area->getLocStart() of all the calls
// from the same macro should be the same).
if( kind == LogCallKind::Sal )
{
SourceLocation expansionLocation = compiler.getSourceManager().getExpansionLoc( compat::getBeginLoc(call));
if( expansionLocation == lastSalDetailLogStreamMacro )
return true;
lastSalDetailLogStreamMacro = expansionLocation;
};
if( const clang::StringLiteral* area = dyn_cast< clang::StringLiteral >( call->getArg( areaArgIndex )->IgnoreParenImpCasts()))
{
if( area->getKind() == clang::StringLiteral::Ascii )
checkArea( area->getBytes(), area->getExprLoc());
else
report( DiagnosticsEngine::Warning, "unsupported string literal kind (plugin needs fixing?)",
compat::getBeginLoc(area));
return true;
}
if( loplugin::DeclCheck(inFunction).Function("log").Namespace("detail").Namespace("sal").GlobalNamespace()
|| loplugin::DeclCheck(inFunction).Function("sal_detail_logFormat").GlobalNamespace() )
return true; // These functions only forward to sal_detail_log, so ok.
if( call->getArg( areaArgIndex )->isNullPointerConstant( compiler.getASTContext(),
Expr::NPC_ValueDependentIsNotNull ) != Expr::NPCK_NotNull )
{ // If the area argument is a null pointer, that is allowed only for SAL_DEBUG.
const SourceManager& source = compiler.getSourceManager();
for( SourceLocation loc = compat::getBeginLoc(call);
loc.isMacroID();
loc = compat::getImmediateExpansionRange(source, loc ).first )
{
StringRef inMacro = Lexer::getImmediateMacroName( loc, source, compiler.getLangOpts());
if( inMacro == "SAL_DEBUG" || inMacro == "SAL_DEBUG_BACKTRACE" )
return true; // ok
}
report( DiagnosticsEngine::Warning, "missing log area",
compat::getBeginLoc(call->getArg( 1 )->IgnoreParenImpCasts()));
return true;
}
report( DiagnosticsEngine::Warning, "cannot analyse log area argument (plugin needs fixing?)",
compat::getBeginLoc(call));
return true;
}
void SalLogAreas::checkArea( StringRef area, SourceLocation location )
{
if( logAreas.empty())
readLogAreas();
if( !logAreas.count( area.str() ))
{
report( DiagnosticsEngine::Warning, "unknown log area '%0' (check or extend include/sal/log-areas.dox)",
location ) << area;
checkAreaSyntax(area, location);
return;
}
// don't leave this alive by default, generates too many false+
#if 0
if (compiler.getSourceManager().isInMainFile(location))
{
auto matchpair = [this,area](StringRef p1, StringRef p2) {
return (area == p1 && firstSeenLogArea == p2) || (area == p2 && firstSeenLogArea == p1);
};
// these are "cross-module" log areas
if (area == "i18n" || area == "lok" || area == "lok.tiledrendering")
;
// these appear to be cross-file log areas
else if ( area == "chart2"
|| area == "oox.cscode" || area == "oox.csdata"
|| area == "slideshow.verbose"
|| area == "sc.opencl"
|| area == "sc.core.formulagroup"
|| area == "sw.pageframe" || area == "sw.idle" || area == "sw.level2"
|| area == "sw.docappend" || area == "sw.mailmerge"
|| area == "sw.uno"
|| area == "vcl.layout" || area == "vcl.a11y"
|| area == "vcl.gdi.fontmetric" || area == "vcl.opengl"
|| area == "vcl.harfbuzz" || area == "vcl.eventtesting"
|| area == "vcl.schedule" || area == "vcl.unity"
|| area == "xmlsecurity.comp"
)
;
else if (firstSeenLogArea == "")
{
firstSeenLogArea = area;
firstSeenLocation = location;
}
// some modules do this deliberately
else if (firstSeenLogArea.compare(0, 3, "jfw") == 0
|| firstSeenLogArea.compare(0, 6, "opencl") == 0)
;
// mixing these in the same file seems legitimate
else if (
matchpair("chart2.pie.label.bestfit", "chart2.pie.label.bestfit.inside")
|| matchpair("editeng", "editeng.chaining")
|| matchpair("oox.drawingml", "oox.cscode")
|| matchpair("oox.drawingml", "oox.drawingml.gradient")
|| matchpair("sc.core", "sc.core.grouparealistener")
|| matchpair("sc.orcus", "sc.orcus.condformat")
|| matchpair("sc.orcus", "sc.orcus.style")
|| matchpair("sc.orcus", "sc.orcus.autofilter")
|| matchpair("svx", "svx.chaining")
|| matchpair("sw.ww8", "sw.ww8.level2")
|| matchpair("writerfilter", "writerfilter.profile")
)
;
else if (firstSeenLogArea != area)
{
report( DiagnosticsEngine::Warning, "two different log areas '%0' and '%1' in the same file?",
location ) << firstSeenLogArea << area;
report( DiagnosticsEngine::Note, "first area was seen here",
firstSeenLocation );
}
}
#endif
}
void SalLogAreas::checkAreaSyntax(StringRef area, SourceLocation location) {
for (std::size_t i = 0;;) {
std::size_t j = area.find('.', i);
if (j == StringRef::npos) {
j = area.size();
}
if (j == i) {
goto bad;
}
for (; i != j; ++i) {
auto c = area[i];
if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z'))) {
goto bad;
}
}
if (j == area.size()) {
return;
}
i = j + 1;
}
bad:
report(
DiagnosticsEngine::Warning,
"invalid log area syntax '%0'%1 (see include/sal/log.hxx for details)",
location)
<< area << (location.isValid() ? "" : " in include/sal/log-areas.dox");
}
void SalLogAreas::readLogAreas()
{
std::ifstream is( SRCDIR "/include/sal/log-areas.dox" );
while( is.good())
{
std::string line;
getline( is, line );
size_t pos = line.find( "@li @c " );
if( pos != std::string::npos )
{
pos += strlen( "@li @c " );
size_t end = line.find( ' ', pos );
std::string area;
if( end == std::string::npos )
area = line.substr( pos );
else if( pos != end )
area = line.substr( pos, end - pos );
checkAreaSyntax(area, SourceLocation());
logAreas.insert(area);
}
}
// If you get this error message, you possibly have too old icecream (ICECC_EXTRAFILES is needed).
if( logAreas.empty())
report( DiagnosticsEngine::Warning, "error reading log areas" );
}
static loplugin::Plugin::Registration< SalLogAreas > sallogareas( "sallogareas" );
} // namespace
#endif // LO_CLANG_SHARED_PLUGINS
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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