7d6e751faa
Change-Id: Ie5fc4676bd1cab2c0417b479bf08dda00936469a Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167191 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
309 lines
8 KiB
C++
309 lines
8 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/sberrors.hxx>
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#include <parser.hxx>
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#include <iosys.hxx>
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#include <memory>
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// test if there's an I/O channel
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bool SbiParser::Channel( bool bAlways )
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{
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bool bRes = false;
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Peek();
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if( IsHash() )
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{
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SbiExpression aExpr( this );
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while( Peek() == COMMA || Peek() == SEMICOLON )
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Next();
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aExpr.Gen();
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aGen.Gen( SbiOpcode::CHANNEL_ );
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bRes = true;
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}
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else if( bAlways )
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Error( ERRCODE_BASIC_EXPECTED, u"#"_ustr );
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return bRes;
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}
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// it's tried that at object variables the Default-
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// Property is addressed for PRINT and WRITE
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void SbiParser::Print()
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{
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bool bChan = Channel();
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while( !bAbort )
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{
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if( !IsEoln( Peek() ) )
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{
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auto pExpr = std::make_unique<SbiExpression>(this);
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pExpr->Gen();
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pExpr.reset();
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Peek();
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aGen.Gen( eCurTok == COMMA ? SbiOpcode::PRINTF_ : SbiOpcode::BPRINT_ );
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}
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if( eCurTok == COMMA || eCurTok == SEMICOLON )
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{
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Next();
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if( IsEoln( Peek() ) ) break;
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}
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else
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{
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aGen.Gen( SbiOpcode::PRCHAR_, '\n' );
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break;
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}
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}
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if( bChan )
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aGen.Gen( SbiOpcode::CHAN0_ );
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}
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// WRITE #chan, expr, ...
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void SbiParser::Write()
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{
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bool bChan = Channel();
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while( !bAbort )
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{
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auto pExpr = std::make_unique<SbiExpression>(this);
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pExpr->Gen();
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pExpr.reset();
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aGen.Gen( SbiOpcode::BWRITE_ );
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if( Peek() == COMMA )
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{
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aGen.Gen( SbiOpcode::PRCHAR_, ',' );
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Next();
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if( IsEoln( Peek() ) ) break;
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}
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else
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{
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aGen.Gen( SbiOpcode::PRCHAR_, '\n' );
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break;
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}
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}
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if( bChan )
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aGen.Gen( SbiOpcode::CHAN0_ );
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}
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// #i92642 Handle LINE keyword outside ::Next()
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void SbiParser::Line()
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{
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// #i92642: Special handling to allow name as symbol
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if( Peek() == INPUT )
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{
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Next();
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LineInput();
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}
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else
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{
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aGen.Statement();
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KeywordSymbolInfo aInfo;
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aInfo.m_aKeywordSymbol = "line";
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aInfo.m_eSbxDataType = GetType();
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Symbol( &aInfo );
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}
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}
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// LINE INPUT [prompt], var$
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void SbiParser::LineInput()
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{
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Channel( true );
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auto pExpr = std::make_unique<SbiExpression>( this, SbOPERAND );
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if( !pExpr->IsVariable() )
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Error( ERRCODE_BASIC_VAR_EXPECTED );
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if( pExpr->GetType() != SbxVARIANT && pExpr->GetType() != SbxSTRING )
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Error( ERRCODE_BASIC_CONVERSION );
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pExpr->Gen();
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aGen.Gen( SbiOpcode::LINPUT_ );
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pExpr.reset();
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aGen.Gen( SbiOpcode::CHAN0_ ); // ResetChannel() not in StepLINPUT() anymore
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}
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// INPUT
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void SbiParser::Input()
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{
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aGen.Gen( SbiOpcode::RESTART_ );
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Channel( true );
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auto pExpr = std::make_unique<SbiExpression>( this, SbOPERAND );
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while( !bAbort )
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{
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if( !pExpr->IsVariable() )
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Error( ERRCODE_BASIC_VAR_EXPECTED );
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pExpr->Gen();
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aGen.Gen( SbiOpcode::INPUT_ );
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if( Peek() == COMMA )
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{
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Next();
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pExpr.reset(new SbiExpression( this, SbOPERAND ));
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}
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else break;
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}
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pExpr.reset();
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aGen.Gen( SbiOpcode::CHAN0_ );
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}
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// OPEN stringexpr FOR mode ACCESS access mode AS Channel [Len=n]
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void SbiParser::Open()
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{
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bInStatement = true;
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SbiExpression aFileName( this );
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SbiToken eTok;
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TestToken( FOR );
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StreamMode nMode = StreamMode::NONE;
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SbiStreamFlags nFlags = SbiStreamFlags::NONE;
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switch( Next() )
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{
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case INPUT:
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nMode = StreamMode::READ; nFlags |= SbiStreamFlags::Input; break;
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case OUTPUT:
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nMode = StreamMode::WRITE | StreamMode::TRUNC; nFlags |= SbiStreamFlags::Output; break;
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case APPEND:
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nMode = StreamMode::WRITE; nFlags |= SbiStreamFlags::Append; break;
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case RANDOM:
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nMode = StreamMode::READ | StreamMode::WRITE; nFlags |= SbiStreamFlags::Random; break;
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case BINARY:
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nMode = StreamMode::READ | StreamMode::WRITE; nFlags |= SbiStreamFlags::Binary; break;
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default:
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Error( ERRCODE_BASIC_SYNTAX );
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}
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if( Peek() == ACCESS )
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{
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Next();
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eTok = Next();
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// influence only READ,WRITE-Flags in nMode
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nMode &= ~StreamMode(StreamMode::READ | StreamMode::WRITE); // delete
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if( eTok == READ )
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{
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if( Peek() == WRITE )
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{
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Next();
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nMode |= StreamMode::READ | StreamMode::WRITE;
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}
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else
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nMode |= StreamMode::READ;
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}
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else if( eTok == WRITE )
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nMode |= StreamMode::WRITE;
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else
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Error( ERRCODE_BASIC_SYNTAX );
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}
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switch( Peek() )
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{
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case SHARED:
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Next(); nMode |= StreamMode::SHARE_DENYNONE; break;
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case LOCK:
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Next();
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eTok = Next();
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if( eTok == READ )
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{
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if( Peek() == WRITE )
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{
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Next();
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nMode |= StreamMode::SHARE_DENYALL;
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}
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else nMode |= StreamMode::SHARE_DENYREAD;
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}
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else if( eTok == WRITE )
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nMode |= StreamMode::SHARE_DENYWRITE;
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else
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Error( ERRCODE_BASIC_SYNTAX );
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break;
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default: break;
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}
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TestToken( AS );
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// channel number
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auto pChan = std::make_unique<SbiExpression>( this );
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std::unique_ptr<SbiExpression> pLen;
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if( Peek() == SYMBOL )
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{
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Next();
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if( aSym.equalsIgnoreAsciiCase("LEN") )
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{
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TestToken( EQ );
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pLen.reset(new SbiExpression( this ));
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}
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}
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if( !pLen ) pLen.reset(new SbiExpression( this, 128, SbxINTEGER ));
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// the stack for the OPEN command looks as follows:
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// block length
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// channel number
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// file name
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pLen->Gen();
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pChan->Gen();
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aFileName.Gen();
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aGen.Gen( SbiOpcode::OPEN_, static_cast<sal_uInt32>(nMode), static_cast<sal_uInt32>(nFlags) );
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bInStatement = false;
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}
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// NAME file AS file
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void SbiParser::Name()
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{
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// #i92642: Special handling to allow name as symbol
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if( Peek() == EQ )
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{
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aGen.Statement();
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KeywordSymbolInfo aInfo;
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aInfo.m_aKeywordSymbol = "name";
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aInfo.m_eSbxDataType = GetType();
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Symbol( &aInfo );
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return;
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}
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SbiExpression aExpr1( this );
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TestToken( AS );
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SbiExpression aExpr2( this );
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aExpr1.Gen();
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aExpr2.Gen();
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aGen.Gen( SbiOpcode::RENAME_ );
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}
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// CLOSE [n,...]
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void SbiParser::Close()
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{
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Peek();
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if( IsEoln( eCurTok ) )
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aGen.Gen( SbiOpcode::CLOSE_, 0 );
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else
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for( ;; )
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{
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SbiExpression aExpr( this );
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while( Peek() == COMMA || Peek() == SEMICOLON )
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Next();
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aExpr.Gen();
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aGen.Gen( SbiOpcode::CHANNEL_ );
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aGen.Gen( SbiOpcode::CLOSE_, 1 );
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if( IsEoln( Peek() ) )
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break;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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