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tdegraphics/kpovmodeler/pmparser.cpp

434 lines
11 KiB

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