fbaf865ffc
... a leftover from times when there were methods for 16-bit
as well as for 32-bit indices. 16-bit indices were removed in
commit 62f3f3d92a.
Change-Id: Idf8b1160e68e8b303cf75ea79dd7dbb3bd00275d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/112187
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
381 lines
11 KiB
C++
381 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <basic/sbx.hxx>
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#include <basic/sberrors.hxx>
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#include <rtl/character.hxx>
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#include <rtl/ustrbuf.hxx>
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static SbxVariableRef Element
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( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf,
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SbxClassType );
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static const sal_Unicode* SkipWhitespace( const sal_Unicode* p )
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{
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while( *p && ( *p == ' ' || *p == '\t' ) )
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p++;
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return p;
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}
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// Scanning of a symbol. The symbol were inserted in rSym, the return value
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// is the new scan position. The symbol is at errors empty.
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static const sal_Unicode* Symbol( const sal_Unicode* p, OUString& rSym )
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{
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sal_uInt16 nLen = 0;
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// Did we have a nonstandard symbol?
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if( *p == '[' )
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{
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rSym = ++p;
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while( *p && *p != ']' )
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{
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p++;
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nLen++;
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}
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p++;
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}
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else
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{
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// A symbol had to begin with an alphabetic character or an underline
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if( !rtl::isAsciiAlpha( *p ) && *p != '_' )
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{
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SbxBase::SetError( ERRCODE_BASIC_SYNTAX );
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}
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else
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{
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rSym = p;
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// The it can contain alphabetic characters, numbers or underlines
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while( *p && (rtl::isAsciiAlphanumeric( *p ) || *p == '_') )
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{
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p++;
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nLen++;
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}
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// Ignore standard BASIC suffixes
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if( *p && (*p == '%' || *p == '&' || *p == '!' || *p == '#' || *p == '$' ) )
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{
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p++;
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}
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}
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}
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rSym = rSym.copy( 0, nLen );
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return p;
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}
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// Qualified name. Element.Element...
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static SbxVariableRef QualifiedName
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( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf, SbxClassType t )
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{
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SbxVariableRef refVar;
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const sal_Unicode* p = SkipWhitespace( *ppBuf );
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if( rtl::isAsciiAlpha( *p ) || *p == '_' || *p == '[' )
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{
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// Read in the element
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refVar = Element( pObj, pGbl, &p, t );
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while( refVar.is() && (*p == '.' || *p == '!') )
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{
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// It follows still an objectelement. The current element
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// had to be a SBX-Object or had to deliver such an object!
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pObj = dynamic_cast<SbxObject*>( refVar.get() );
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if( !pObj )
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// Then it had to deliver an object
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pObj = dynamic_cast<SbxObject*>( refVar->GetObject() );
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refVar.clear();
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if( !pObj )
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break;
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p++;
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// And the next element please
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refVar = Element( pObj, pGbl, &p, t );
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}
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}
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else
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SbxBase::SetError( ERRCODE_BASIC_SYNTAX );
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*ppBuf = p;
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return refVar;
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}
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// Read in of an operand. This could be a number, a string or
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// a function (with optional parameters).
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static SbxVariableRef Operand
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( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf, bool bVar )
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{
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SbxVariableRef refVar( new SbxVariable );
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const sal_Unicode* p = SkipWhitespace( *ppBuf );
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if( !bVar && ( rtl::isAsciiDigit( *p )
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|| ( *p == '.' && rtl::isAsciiDigit( *( p+1 ) ) )
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|| *p == '-'
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|| *p == '&' ) )
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{
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// A number could be scanned in directly!
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sal_uInt16 nLen;
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if( !refVar->Scan( OUString( p ), &nLen ) )
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{
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refVar.clear();
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}
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else
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{
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p += nLen;
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}
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}
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else if( !bVar && *p == '"' )
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{
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// A string
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OUStringBuffer aString;
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p++;
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for( ;; )
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{
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// This is perhaps an error
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if( !*p )
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{
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return nullptr;
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}
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// Double quotes are OK
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if( *p == '"' && (*++p) != '"' )
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{
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break;
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}
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aString.append(*p++);
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}
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refVar->PutString( aString.makeStringAndClear() );
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}
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else
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{
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refVar = QualifiedName( pObj, pGbl, &p, SbxClassType::DontCare );
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}
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*ppBuf = p;
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return refVar;
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}
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// Read in of a simple term. The operands +, -, * and /
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// are supported.
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static SbxVariableRef MulDiv( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf )
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{
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const sal_Unicode* p = *ppBuf;
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SbxVariableRef refVar( Operand( pObj, pGbl, &p, false ) );
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p = SkipWhitespace( p );
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while( refVar.is() && ( *p == '*' || *p == '/' ) )
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{
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sal_Unicode cOp = *p++;
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SbxVariableRef refVar2( Operand( pObj, pGbl, &p, false ) );
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if( refVar2.is() )
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{
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// temporary variable!
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SbxVariable* pVar = refVar.get();
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pVar = new SbxVariable( *pVar );
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refVar = pVar;
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if( cOp == '*' )
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*refVar *= *refVar2;
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else
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*refVar /= *refVar2;
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}
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else
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{
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refVar.clear();
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break;
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}
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}
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*ppBuf = p;
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return refVar;
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}
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static SbxVariableRef PlusMinus( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf )
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{
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const sal_Unicode* p = *ppBuf;
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SbxVariableRef refVar( MulDiv( pObj, pGbl, &p ) );
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p = SkipWhitespace( p );
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while( refVar.is() && ( *p == '+' || *p == '-' ) )
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{
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sal_Unicode cOp = *p++;
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SbxVariableRef refVar2( MulDiv( pObj, pGbl, &p ) );
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if( refVar2.is() )
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{
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// temporary Variable!
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SbxVariable* pVar = refVar.get();
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pVar = new SbxVariable( *pVar );
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refVar = pVar;
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if( cOp == '+' )
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*refVar += *refVar2;
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else
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*refVar -= *refVar2;
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}
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else
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{
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refVar.clear();
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break;
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}
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}
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*ppBuf = p;
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return refVar;
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}
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static SbxVariableRef Assign( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf )
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{
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const sal_Unicode* p = *ppBuf;
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SbxVariableRef refVar( Operand( pObj, pGbl, &p, true ) );
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p = SkipWhitespace( p );
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if( refVar.is() )
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{
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if( *p == '=' )
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{
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// Assign only onto properties!
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if( refVar->GetClass() != SbxClassType::Property )
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{
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SbxBase::SetError( ERRCODE_BASIC_BAD_ACTION );
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refVar.clear();
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}
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else
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{
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p++;
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SbxVariableRef refVar2( PlusMinus( pObj, pGbl, &p ) );
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if( refVar2.is() )
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{
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SbxVariable* pVar = refVar.get();
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SbxVariable* pVar2 = refVar2.get();
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*pVar = *pVar2;
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pVar->SetParameters( nullptr );
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}
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}
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}
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else
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// Simple call: once activating
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refVar->Broadcast( SfxHintId::BasicDataWanted );
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}
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*ppBuf = p;
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return refVar;
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}
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// Read in of an element. This is a symbol, optional followed
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// by a parameter list. The symbol will be searched in the
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// specified object and the parameter list will be attached if necessary.
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static SbxVariableRef Element
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( SbxObject* pObj, SbxObject* pGbl, const sal_Unicode** ppBuf,
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SbxClassType t )
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{
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OUString aSym;
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const sal_Unicode* p = Symbol( *ppBuf, aSym );
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SbxVariableRef refVar;
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if( !aSym.isEmpty() )
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{
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SbxFlagBits nOld = pObj->GetFlags();
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if( pObj == pGbl )
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{
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pObj->SetFlag( SbxFlagBits::GlobalSearch );
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}
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refVar = pObj->Find( aSym, t );
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pObj->SetFlags( nOld );
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if( refVar.is() )
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{
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refVar->SetParameters( nullptr );
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// Follow still parameter?
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p = SkipWhitespace( p );
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if( *p == '(' )
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{
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p++;
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auto refPar = tools::make_ref<SbxArray>();
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sal_uInt32 nArg = 0;
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// We are once relaxed and accept as well
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// the line- or command end as delimiter
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// Search parameter always global!
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while( *p && *p != ')' && *p != ']' )
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{
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SbxVariableRef refArg = PlusMinus( pGbl, pGbl, &p );
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if( !refArg.is() )
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{
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// Error during the parsing
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refVar.clear(); break;
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}
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else
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{
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// One copies the parameter, so that
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// one have the current status (triggers also
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// the call per access)
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refPar->Put(new SbxVariable(*refArg), ++nArg);
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}
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p = SkipWhitespace( p );
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if( *p == ',' )
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p++;
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}
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if( *p == ')' )
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p++;
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if( refVar.is() )
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refVar->SetParameters( refPar.get() );
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}
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}
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else
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SbxBase::SetError( ERRCODE_BASIC_NO_METHOD );
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}
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*ppBuf = p;
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return refVar;
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}
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// Mainroutine
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SbxVariable* SbxObject::Execute( const OUString& rTxt )
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{
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SbxVariableRef pVar;
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const sal_Unicode* p = rTxt.getStr();
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for( ;; )
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{
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p = SkipWhitespace( p );
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if( !*p )
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{
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break;
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}
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if( *p++ != '[' )
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{
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SetError( ERRCODE_BASIC_SYNTAX ); break;
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}
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pVar = Assign( this, this, &p );
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if( !pVar.is() )
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{
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break;
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}
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p = SkipWhitespace( p );
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if( *p++ != ']' )
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{
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SetError( ERRCODE_BASIC_SYNTAX ); break;
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}
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}
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return pVar.get();
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}
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SbxVariable* SbxObject::FindQualified( const OUString& rName, SbxClassType t )
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{
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SbxVariableRef pVar;
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const sal_Unicode* p = rName.getStr();
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p = SkipWhitespace( p );
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if( !*p )
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{
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return nullptr;
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}
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pVar = QualifiedName( this, this, &p, t );
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p = SkipWhitespace( p );
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if( *p )
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{
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SetError( ERRCODE_BASIC_SYNTAX );
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}
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return pVar.get();
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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