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/*
* 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.
*
*/
#include "plugin.hxx"
#include <clang/Basic/FileManager.h>
#include "pluginhandler.hxx"
/*
Base classes for plugin actions.
*/
namespace loplugin
{
Plugin::Plugin( CompilerInstance& compiler )
: compiler( compiler )
{
}
DiagnosticBuilder Plugin::report( DiagnosticsEngine::Level level, StringRef message, SourceLocation loc )
{
return report( level, message, compiler, loc );
}
DiagnosticBuilder Plugin::report( DiagnosticsEngine::Level level, StringRef message, CompilerInstance& compiler,
SourceLocation loc )
{
DiagnosticsEngine& diag = compiler.getDiagnostics();
#if 0
// Do some mappings (e.g. for -Werror) that clang does not do for custom messages for some reason.
if( level == DiagnosticsEngine::Warning && diag.getWarningsAsErrors())
level = DiagnosticsEngine::Error;
if( level == DiagnosticsEngine::Error && diag.getErrorsAsFatal())
level = DiagnosticsEngine::Fatal;
#endif
string fullMessage = ( message + " [loplugin]" ).str();
if( loc.isValid())
return diag.Report( loc, diag.getCustomDiagID( level, fullMessage ));
else
return diag.Report( diag.getCustomDiagID( level, fullMessage ));
}
bool Plugin::ignoreLocation( SourceLocation loc )
{
SourceLocation expansionLoc = compiler.getSourceManager().getExpansionLoc( loc );
if( compiler.getSourceManager().isInSystemHeader( expansionLoc ))
return true;
const char* bufferName = compiler.getSourceManager().getPresumedLoc( expansionLoc ).getFilename();
if( bufferName == NULL )
return true;
if( strncmp( bufferName, OUTDIR, strlen( OUTDIR )) == 0
|| strncmp( bufferName, WORKDIR, strlen( WORKDIR )) == 0
|| strncmp( bufferName, BUILDDIR, strlen( BUILDDIR )) == 0
|| strncmp( bufferName, SRCDIR, strlen( SRCDIR )) == 0 )
return false; // ok
return true;
}
void Plugin::registerPlugin( Plugin* (*create)( CompilerInstance&, Rewriter& ), const char* optionName, bool isRewriter )
{
PluginHandler::registerPlugin( create, optionName, isRewriter );
}
/////
RewritePlugin::RewritePlugin( CompilerInstance& compiler, Rewriter& rewriter )
: Plugin( compiler )
, rewriter( rewriter )
{
}
bool RewritePlugin::insertText( SourceLocation Loc, StringRef Str, bool InsertAfter, bool indentNewLines )
{
if( rewriter.InsertText( Loc, Str, InsertAfter, indentNewLines ))
return reportEditFailure( Loc );
return true;
}
bool RewritePlugin::insertTextAfter( SourceLocation Loc, StringRef Str )
{
if( rewriter.InsertTextAfter( Loc, Str ))
return reportEditFailure( Loc );
return true;
}
bool RewritePlugin::insertTextAfterToken( SourceLocation Loc, StringRef Str )
{
if( rewriter.InsertTextAfterToken( Loc, Str ))
return reportEditFailure( Loc );
return true;
}
bool RewritePlugin::insertTextBefore( SourceLocation Loc, StringRef Str )
{
if( rewriter.InsertTextBefore( Loc, Str ))
return reportEditFailure( Loc );
return true;
}
bool RewritePlugin::removeText( SourceLocation Start, unsigned Length, RewriteOptions opts )
{
return removeText( SourceRange( Start, Start.getLocWithOffset( Length )), opts );
}
bool RewritePlugin::removeText( SourceRange range, RewriteOptions opts )
{
if( opts.RemoveWholeStatement )
{
if( !adjustForWholeStatement( &range ))
return reportEditFailure( range.getBegin());
}
if( rewriter.RemoveText( range, opts ))
return reportEditFailure( range.getBegin());
return true;
}
bool RewritePlugin::adjustForWholeStatement( SourceRange* range )
{
SourceManager& SM = rewriter.getSourceMgr();
SourceLocation fileStartLoc = SM.getLocForStartOfFile( SM.getFileID( range->getBegin()));
if( fileStartLoc.isInvalid())
return false;
bool invalid = false;
const char* fileBuf = SM.getCharacterData( fileStartLoc, &invalid );
if( invalid )
return false;
const char* startBuf = SM.getCharacterData( range->getBegin(), &invalid );
if( invalid )
return false;
const char* endBuf = SM.getCharacterData( range->getEnd(), &invalid );
if( invalid )
return false;
const char* startSpacePos = startBuf;
// do not skip \n here, RemoveLineIfEmpty can take care of that
--startSpacePos;
while( startSpacePos >= fileBuf && ( *startSpacePos == ' ' || *startSpacePos == '\t' ))
--startSpacePos;
const char* semiPos = strchr( endBuf, ';' );
if( semiPos == NULL )
return false;
*range = SourceRange( range->getBegin().getLocWithOffset( startSpacePos - startBuf + 1 ),
range->getEnd().getLocWithOffset( semiPos - endBuf + 1 ));
return true;
}
bool RewritePlugin::replaceText( SourceLocation Start, unsigned OrigLength, StringRef NewStr )
{
if( rewriter.ReplaceText( Start, OrigLength, NewStr ))
return reportEditFailure( Start );
return true;
}
bool RewritePlugin::replaceText( SourceRange range, StringRef NewStr )
{
if( rewriter.ReplaceText( range, NewStr ))
return reportEditFailure( range.getBegin());
return true;
}
bool RewritePlugin::replaceText( SourceRange range, SourceRange replacementRange )
{
if( rewriter.ReplaceText( range, replacementRange ))
return reportEditFailure( range.getBegin());
return true;
}
bool RewritePlugin::reportEditFailure( SourceLocation loc )
{
report( DiagnosticsEngine::Warning, "cannot perform source modification (macro expansion involved?)", loc );
return false;
}
} // namespace
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