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434 lines
11 KiB
434 lines
11 KiB
/*
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**************************************************************************
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description
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--------------------
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copyright : (C) 2000-2003 by Andreas Zehender
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email : zehender@kde.org
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**************************************************************************
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**************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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**************************************************************************/
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#include "pmparser.h"
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#include <tqstring.h>
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#include <tqbuffer.h>
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#include <tdelocale.h>
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#include "pmpart.h"
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#include "pmdeclare.h"
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#include "pmerrorflags.h"
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#include "pmrecursiveobjectiterator.h"
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#include "pmdebug.h"
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unsigned int PMParser::s_maxErrors = 30;
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unsigned int PMParser::s_maxWarnings = 50;
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PMParser::PMParser( PMPart* part, TQIODevice* dev )
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: m_okDeclares( 101 )
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{
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m_pPart = part;
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m_pDevice = dev;
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m_bDeviceCreated = false;
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init( );
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}
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PMParser::PMParser( PMPart* part, const TQByteArray& array )
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: m_okDeclares( 101 )
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{
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m_pPart = part;
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TQBuffer* buffer = new TQBuffer( array );
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buffer->open( IO_ReadOnly );
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m_pDevice = buffer;
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m_bDeviceCreated = true;
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init( );
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}
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void PMParser::init( )
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{
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m_okDeclares.setAutoDelete( true );
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m_pLocalST.setAutoDelete( true );
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m_lineNum = -1;
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m_pResultList = 0;
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m_errors = 0;
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m_warnings = 0;
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m_bFatalError = false;
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m_shownMessages = 0;
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m_messages.clear( );
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m_pTopParent = 0;
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m_renamedObjectSymbols.clear( );
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m_okDeclares.clear( );
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m_pNextCheckDeclare = 0;
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}
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PMParser::~PMParser( )
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{
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if( m_bDeviceCreated )
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delete m_pDevice;
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}
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void PMParser::printMessage( const PMPMessage messageNum )
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{
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if( !( m_shownMessages & messageNum ) )
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{
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m_shownMessages |= messageNum;
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switch( messageNum )
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{
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case PMMClockDefault:
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printWarning( i18n( "Using the default value of 0.0 for clock" ) );
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break;
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case PMMClockDeltaDefault:
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printWarning( i18n( "Using the default value of 1.0 for clock_delta" ) );
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break;
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case PMMSpecialRawComment:
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m_messages += PMMessage( i18n( "Note: The full povray syntax is not supported yet. "
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"If you want to add unsupported povray code to the "
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"scene, you can put this code between the two "
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"special comments \"//*PMRawBegin\" and "
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"\"//*PMRawEnd\"." ) );
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break;
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}
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}
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}
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void PMParser::printMessage( const TQString& type, const TQString& msg )
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{
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if( m_lineNum >= 0 )
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m_messages += PMMessage( i18n( "Line %1: " ).arg( m_lineNum ) + type + ": " + msg );
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else
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m_messages += PMMessage( type + ": " + msg );
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}
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void PMParser::printError( const TQString& msg )
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{
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if( m_errors < s_maxErrors )
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{
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printMessage( i18n( "Error" ), msg );
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m_errors++;
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}
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else if( m_errors == s_maxErrors )
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{
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m_messages += PMMessage( i18n( "Maximum of %1 errors reached." )
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.arg( s_maxErrors ) );
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m_errors++;
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}
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}
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void PMParser::printWarning( const TQString& msg )
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{
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if( m_warnings < s_maxWarnings )
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{
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printMessage( i18n( "Warning" ), msg );
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m_warnings++;
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}
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else if( m_warnings == s_maxWarnings )
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{
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m_messages += PMMessage( i18n( "Maximum of %1 warnings reached." )
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.arg( s_maxWarnings ) );
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m_warnings++;
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}
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}
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void PMParser::printExpected( const char c, const char* sValue )
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{
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printError( i18n( "'%1' expected, found token '%2' instead." )
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.arg( c ).arg( sValue ) );
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}
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void PMParser::printExpected( const TQString& str, const char* sValue )
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{
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printError( i18n( "'%1' expected, found token '%2' instead." )
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.arg( str ).arg( sValue ) );
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}
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void PMParser::printUnexpected( const TQString& str )
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{
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printError( i18n( "Unexpected token '%1'." ).arg( str ) );
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}
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void PMParser::printInfo( const TQString& msg )
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{
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printMessage( i18n( "Info" ), msg );
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}
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int PMParser::errorFlags( ) const
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{
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int result = 0;
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if( errors( ) )
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result |= PMEError;
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if( warnings( ) )
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result |= PMEWarning;
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if( fatal( ) )
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result |= PMEFatal;
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return result;
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}
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void PMParser::parse( PMObjectList* list, PMObject* parent,
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PMObject* after )
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{
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m_pResultList = list;
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m_pTopParent = parent;
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m_pAfter = after;
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// find first item, that can be a declare and can be used as link
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// for parsed objects.
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if( parent )
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{
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if( parent->type( ) == "Scene" )
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{
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if( after )
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m_pNextCheckDeclare = after;
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else
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m_pNextCheckDeclare = 0;
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}
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else
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{
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PMObject* obj = parent;
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bool stop = false;
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// go to parents, until the parent is the scene
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// (declares can only be inserted as top level objects)
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do
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{
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if( obj->parent( ) )
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{
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if( obj->parent( )->type( ) == "Scene" )
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stop = true;
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else
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obj = obj->parent( );
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}
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else
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{
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obj = 0;
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stop = true;
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}
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}
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while( obj && !stop );
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// now obj is the top level parent of the object, where parsed objects
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// will be inserted
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if( obj )
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m_pNextCheckDeclare = obj->prevSibling( );
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else
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m_pNextCheckDeclare = 0;
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}
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}
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topParse( );
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TQPtrListIterator<PMSymbol> it( m_renamedObjectSymbols );
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for( ; it.current( ); ++it )
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it.current( )->setRenamedSymbol( 0 );
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m_renamedObjectSymbols.clear( );
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m_pLocalST.clear( );
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if( ( errors( ) || warnings( ) ) && m_pResultList->isEmpty( ) )
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setFatalError( );
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}
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bool PMParser::insertChild( PMObject* child, PMObject* parent )
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{
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bool inserted = false;
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if( parent )
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{
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if( parent->canInsert( child, parent->lastChild( ) ) )
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{
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parent->appendChild( child );
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inserted = true;
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}
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else
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{
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printError( i18n( "Can't insert %1 into %2." )
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.arg( child->description( ) )
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.arg( parent->description( ) ) );
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}
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}
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else
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{
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if( m_pTopParent )
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{
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if( m_pTopParent->canInsert( child, m_pAfter, m_pResultList ) )
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{
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m_pResultList->append( child );
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inserted = true;
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}
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else
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{
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printError( i18n( "Can't insert %1 into %2." )
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.arg( child->description( ) )
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.arg( m_pTopParent->description( ) ) );
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}
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}
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else
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{
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// these lines should not be executed
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// m_pTopParent may not be null
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m_pResultList->append( child );
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inserted = true;
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}
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}
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if( !inserted )
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{
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// insert error
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// remove all links
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PMRecursiveObjectIterator rit( child );
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PMDeclare* decl = 0;
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for( ; rit.current( ); ++rit )
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{
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decl = rit.current( )->linkedObject( );
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if( decl )
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decl->removeLinkedObject( rit.current( ) );
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}
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}
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return inserted;
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}
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void PMParser::checkID( PMDeclare* decl )
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{
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PMSymbolTable* st = m_pPart->symbolTable( );
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PMSymbol* s = m_pLocalST.find( decl->id( ) );
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if( !s )
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s = st->find( decl->id( ) );
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if( s )
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{
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PMSymbol* newSym = st->findNewID( s->id( ) + "_", decl );
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s->setRenamedSymbol( newSym );
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// Symbol can be inserted multiple times
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// Faster than searching for s and inserting s
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// if the list does not contain it.
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m_renamedObjectSymbols.append( s );
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if( m_pTopParent )
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m_pLocalST.insert( decl->id( ), newSym ); // paste/drop
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else
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st->insert( decl->id( ), newSym ); // load file
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}
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else
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{
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s = new PMSymbol( decl->id( ), decl );
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if( m_pTopParent )
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m_pLocalST.insert( decl->id( ), s ); // paste/drop
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else
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st->insert( decl->id( ), s ); // load file
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m_okDeclares.insert( decl->id( ), new bool( true ) );
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}
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}
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void PMParser::checkID( const TQString& id, const PMValue& v )
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{
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PMSymbolTable* st = m_pPart->symbolTable( );
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PMSymbol* s = m_pLocalST.find( id );
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if( s )
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{
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PMSymbol* newSym = new PMSymbol( st->findNewID( id + "_" ), v );
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s->setRenamedSymbol( newSym );
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// Symbol can be inserted multiple times
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// Faster than searching for s and inserting s
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// if the list does not contain it.
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m_renamedObjectSymbols.append( s );
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if( m_pTopParent )
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m_pLocalST.insert( id, newSym ); // paste/drop
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// values are never inserted into the parts symbol table
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// else
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// st->insert( decl->id( ), newSym ); // load file
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}
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else
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{
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s = new PMSymbol( id, v );
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if( m_pTopParent )
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m_pLocalST.insert( id, s ); // paste/drop
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// values are never inserted into the parts symbol table
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// else
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// st->insert( decl->id( ), s ); // load file
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m_okDeclares.insert( id, new bool( true ) );
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}
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}
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PMDeclare* PMParser::checkLink( const TQString& id )
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{
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PMSymbolTable* t = m_pPart->symbolTable( );
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bool ok = false;
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// is object declared?
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PMSymbol* s = m_pLocalST.find( id );
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if( !s )
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s = t->find( id );
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if( !s )
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printError( i18n( "Undefined object \"%1\"." ).arg( id ) );
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else if( s->type( ) != PMSymbol::Object )
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printError( i18n( "Undefined object \"%1\"." ).arg( id ) );
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else
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{
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// the object is declared
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// is the id already in m_okDeclares
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bool* lok = m_okDeclares.find( id );
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if( lok )
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ok = true;
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else
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{
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// the id is not in m_okDeclares
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PMObject* obj = s->object( );
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while( m_pNextCheckDeclare && !ok )
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{
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if( m_pNextCheckDeclare->isA( "Declare" ) )
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{
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PMDeclare* decl = ( PMDeclare* ) m_pNextCheckDeclare;
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m_okDeclares.insert( decl->id( ), new bool( true ) );
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}
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if( m_pNextCheckDeclare == obj )
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ok = true;
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m_pNextCheckDeclare = m_pNextCheckDeclare->prevSibling( );
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}
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}
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if( !ok )
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printError( i18n( "Object \"%1\" is undefined at that point." )
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.arg( id ) );
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}
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if( ok )
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{
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while( s->renamedSymbol( ) )
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s = s->renamedSymbol( );
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return s->object( );
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}
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return 0;
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}
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PMSymbol* PMParser::getSymbol( const TQString& id ) const
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{
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PMSymbol* s = m_pLocalST.find( id );
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if( !s )
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s = m_pPart->symbolTable( )->find( id );
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return s;
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}
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