1165 lines
49 KiB
C++
1165 lines
49 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 <sal/config.h>
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#include <svx/EnhancedCustomShape2d.hxx>
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#include <rtl/ustring.hxx>
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#include <sal/log.hxx>
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#include <tools/fract.hxx>
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#include <com/sun/star/drawing/EnhancedCustomShapeParameterType.hpp>
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// Makes parser a static resource,
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// we're synchronized externally.
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// But watch out, the parser might have
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// state not visible to this code!
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#define BOOST_SPIRIT_SINGLE_GRAMMAR_INSTANCE
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#if OSL_DEBUG_LEVEL >= 2 && defined(DBG_UTIL)
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#define BOOST_SPIRIT_DEBUG
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#endif
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#include <boost/spirit/include/classic_core.hpp>
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#include <functional>
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#include <algorithm>
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#include <stack>
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#include <utility>
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#include <math.h>
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using namespace EnhancedCustomShape;
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using namespace com::sun::star;
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using namespace com::sun::star::drawing;
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void EnhancedCustomShape::FillEquationParameter( const EnhancedCustomShapeParameter& rSource, const sal_Int32 nDestPara, EnhancedCustomShapeEquation& rDest )
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{
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sal_Int32 nValue = 0;
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if ( rSource.Value.getValueTypeClass() == uno::TypeClass_DOUBLE )
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{
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double fValue(0.0);
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if ( rSource.Value >>= fValue )
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nValue = static_cast<sal_Int32>(fValue);
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}
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else
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rSource.Value >>= nValue;
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switch( rSource.Type )
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{
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case css::drawing::EnhancedCustomShapeParameterType::EQUATION :
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{
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if ( nValue & 0x40000000 )
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{
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nValue ^= 0x40000000;
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rDest.nOperation |= 0x20000000 << nDestPara; // the bit is indicating that this value has to be adjusted later
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}
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nValue |= 0x400;
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}
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break;
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case css::drawing::EnhancedCustomShapeParameterType::ADJUSTMENT : nValue += DFF_Prop_adjustValue; break;
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case css::drawing::EnhancedCustomShapeParameterType::BOTTOM : nValue = DFF_Prop_geoBottom; break;
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case css::drawing::EnhancedCustomShapeParameterType::RIGHT : nValue = DFF_Prop_geoRight; break;
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case css::drawing::EnhancedCustomShapeParameterType::TOP : nValue = DFF_Prop_geoTop; break;
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case css::drawing::EnhancedCustomShapeParameterType::LEFT : nValue = DFF_Prop_geoLeft; break;
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}
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if ( rSource.Type != css::drawing::EnhancedCustomShapeParameterType::NORMAL )
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rDest.nOperation |= ( 0x2000 << nDestPara );
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rDest.nPara[ nDestPara ] = nValue;
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}
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ExpressionNode::~ExpressionNode()
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{}
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namespace
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{
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// EXPRESSION NODES
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class ConstantValueExpression : public ExpressionNode
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{
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double maValue;
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public:
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explicit ConstantValueExpression( double rValue ) :
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maValue( rValue )
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{
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}
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virtual double operator()() const override
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{
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return maValue;
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}
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virtual bool isConstant() const override
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{
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return true;
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}
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virtual ExpressionFunct getType() const override
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{
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return ExpressionFunct::Const;
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}
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virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* /* pOptionalArg */, sal_uInt32 /* nFlags */ ) override
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{
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EnhancedCustomShapeParameter aRet;
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Fraction aFract( maValue );
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if ( aFract.GetDenominator() == 1 )
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{
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aRet.Type = EnhancedCustomShapeParameterType::NORMAL;
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aRet.Value <<= aFract.GetNumerator();
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}
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else
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation = 1;
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aEquation.nPara[ 0 ] = 1;
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aEquation.nPara[ 1 ] = static_cast<sal_Int16>(aFract.GetNumerator());
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aEquation.nPara[ 2 ] = static_cast<sal_Int16>(aFract.GetDenominator());
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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return aRet;
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}
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};
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class AdjustmentExpression : public ExpressionNode
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{
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sal_Int32 mnIndex;
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const EnhancedCustomShape2d& mrCustoShape;
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public:
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AdjustmentExpression( const EnhancedCustomShape2d& rCustoShape, sal_Int32 nIndex )
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: mnIndex ( nIndex )
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, mrCustoShape( rCustoShape )
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{
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}
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virtual double operator()() const override
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{
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SAL_INFO(
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"svx",
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"$" << mnIndex << " --> "
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<< mrCustoShape.GetAdjustValueAsDouble(mnIndex) << " (angle: "
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<< 180.0*mrCustoShape.GetAdjustValueAsDouble(mnIndex)/10800000.0
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<< ")");
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return mrCustoShape.GetAdjustValueAsDouble( mnIndex );
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}
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virtual bool isConstant() const override
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{
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return false;
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}
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virtual ExpressionFunct getType() const override
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{
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return ExpressionFunct::EnumAdjustment;
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}
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virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& /*rEquations*/, ExpressionNode* /*pOptionalArg*/, sal_uInt32 /*nFlags*/ ) override
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{
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EnhancedCustomShapeParameter aRet;
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aRet.Type = EnhancedCustomShapeParameterType::ADJUSTMENT;
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aRet.Value <<= mnIndex;
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return aRet;
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}
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};
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class EquationExpression : public ExpressionNode
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{
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const sal_Int32 mnIndex;
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const EnhancedCustomShape2d& mrCustoShape;
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mutable bool mbGettingValueGuard;
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public:
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EquationExpression( const EnhancedCustomShape2d& rCustoShape, sal_Int32 nIndex )
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: mnIndex ( nIndex )
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, mrCustoShape( rCustoShape )
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, mbGettingValueGuard(false)
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{
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}
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virtual double operator()() const override
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{
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if (mbGettingValueGuard)
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throw ParseError("Loop in Expression");
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mbGettingValueGuard = true;
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double fRet = mrCustoShape.GetEquationValueAsDouble(mnIndex);
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mbGettingValueGuard = false;
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return fRet;
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}
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virtual bool isConstant() const override
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{
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return false;
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}
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virtual ExpressionFunct getType() const override
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{
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return ExpressionFunct::EnumEquation;
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}
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virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& /*rEquations*/, ExpressionNode* /*pOptionalArg*/, sal_uInt32 /*nFlags*/ ) override
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{
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EnhancedCustomShapeParameter aRet;
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= mnIndex | 0x40000000; // the bit is indicating that this equation needs to be adjusted later
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return aRet;
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}
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};
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class EnumValueExpression : public ExpressionNode
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{
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const ExpressionFunct meFunct;
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const EnhancedCustomShape2d& mrCustoShape;
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public:
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EnumValueExpression( const EnhancedCustomShape2d& rCustoShape, const ExpressionFunct eFunct )
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: meFunct ( eFunct )
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, mrCustoShape ( rCustoShape )
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{
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}
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virtual double operator()() const override
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{
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SAL_INFO("svx", meFunct << " --> " << mrCustoShape.GetEnumFunc(meFunct) << "(angle: " <<
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180.0 * mrCustoShape.GetEnumFunc(meFunct) / 10800000.0 << ")");
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return mrCustoShape.GetEnumFunc( meFunct );
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}
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virtual bool isConstant() const override
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{
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return false;
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}
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virtual ExpressionFunct getType() const override
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{
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return meFunct;
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}
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virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* /*pOptionalArg*/, sal_uInt32 nFlags ) override
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{
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EnhancedCustomShapeParameter aRet;
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aRet.Value <<= sal_Int32(1);
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switch( meFunct )
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{
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case ExpressionFunct::EnumWidth : // TODO: do not use this as constant value
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case ExpressionFunct::EnumHeight :
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case ExpressionFunct::EnumLogWidth :
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case ExpressionFunct::EnumLogHeight :
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case ExpressionFunct::EnumPi :
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{
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ConstantValueExpression aConstantValue( mrCustoShape.GetEnumFunc( meFunct ) );
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aRet = aConstantValue.fillNode( rEquations, nullptr, nFlags );
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}
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break;
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case ExpressionFunct::EnumLeft : aRet.Type = EnhancedCustomShapeParameterType::LEFT; break;
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case ExpressionFunct::EnumTop : aRet.Type = EnhancedCustomShapeParameterType::TOP; break;
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case ExpressionFunct::EnumRight : aRet.Type = EnhancedCustomShapeParameterType::RIGHT; break;
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case ExpressionFunct::EnumBottom : aRet.Type = EnhancedCustomShapeParameterType::BOTTOM; break;
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// not implemented so far
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case ExpressionFunct::EnumXStretch :
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case ExpressionFunct::EnumYStretch :
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case ExpressionFunct::EnumHasStroke :
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case ExpressionFunct::EnumHasFill : aRet.Type = EnhancedCustomShapeParameterType::NORMAL; break;
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default:
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break;
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}
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return aRet;
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}
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};
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/** ExpressionNode implementation for unary
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function over one ExpressionNode
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*/
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class UnaryFunctionExpression : public ExpressionNode
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{
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const ExpressionFunct meFunct;
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std::shared_ptr<ExpressionNode> mpArg;
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public:
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UnaryFunctionExpression( const ExpressionFunct eFunct, std::shared_ptr<ExpressionNode> aArg ) :
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meFunct( eFunct ),
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mpArg(std::move( aArg ))
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{
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}
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static double getValue( const ExpressionFunct eFunct, const std::shared_ptr<ExpressionNode>& rArg )
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{
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double fRet = 0;
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switch( eFunct )
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{
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case ExpressionFunct::UnaryAbs : fRet = fabs( (*rArg)() ); break;
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case ExpressionFunct::UnarySqrt: fRet = sqrt( (*rArg)() ); break;
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case ExpressionFunct::UnarySin : fRet = sin( (*rArg)() ); break;
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case ExpressionFunct::UnaryCos : fRet = cos( (*rArg)() ); break;
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case ExpressionFunct::UnaryTan : fRet = tan( (*rArg)() ); break;
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case ExpressionFunct::UnaryAtan: fRet = atan( (*rArg)() ); break;
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case ExpressionFunct::UnaryNeg : fRet = ::std::negate<double>()( (*rArg)() ); break;
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default:
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break;
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}
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return fRet;
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}
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virtual double operator()() const override
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{
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return getValue( meFunct, mpArg );
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}
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virtual bool isConstant() const override
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{
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return mpArg->isConstant();
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}
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virtual ExpressionFunct getType() const override
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{
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return meFunct;
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}
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virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* pOptionalArg, sal_uInt32 nFlags ) override
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{
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EnhancedCustomShapeParameter aRet;
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switch( meFunct )
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{
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case ExpressionFunct::UnaryAbs :
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation |= 3;
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FillEquationParameter( mpArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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break;
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case ExpressionFunct::UnarySqrt:
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation |= 13;
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FillEquationParameter( mpArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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break;
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case ExpressionFunct::UnarySin :
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation |= 9;
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if ( pOptionalArg )
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FillEquationParameter( pOptionalArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
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else
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aEquation.nPara[ 0 ] = 1;
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EnhancedCustomShapeParameter aSource( mpArg->fillNode( rEquations, nullptr, nFlags | EXPRESSION_FLAG_SUMANGLE_MODE ) );
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if ( aSource.Type == EnhancedCustomShapeParameterType::NORMAL )
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{ // sumangle needed :-(
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EnhancedCustomShapeEquation _aEquation;
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_aEquation.nOperation |= 0xe; // sumangle
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FillEquationParameter( aSource, 1, _aEquation );
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aSource.Type = EnhancedCustomShapeParameterType::EQUATION;
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aSource.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( _aEquation );
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}
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FillEquationParameter( aSource, 1, aEquation );
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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break;
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case ExpressionFunct::UnaryCos :
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation |= 10;
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if ( pOptionalArg )
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FillEquationParameter( pOptionalArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
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else
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aEquation.nPara[ 0 ] = 1;
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EnhancedCustomShapeParameter aSource( mpArg->fillNode( rEquations, nullptr, nFlags | EXPRESSION_FLAG_SUMANGLE_MODE ) );
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if ( aSource.Type == EnhancedCustomShapeParameterType::NORMAL )
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{ // sumangle needed :-(
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EnhancedCustomShapeEquation aTmpEquation;
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aTmpEquation.nOperation |= 0xe; // sumangle
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FillEquationParameter( aSource, 1, aTmpEquation );
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aSource.Type = EnhancedCustomShapeParameterType::EQUATION;
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aSource.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aTmpEquation );
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}
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FillEquationParameter( aSource, 1, aEquation );
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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break;
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case ExpressionFunct::UnaryTan :
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation |= 16;
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if ( pOptionalArg )
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FillEquationParameter( pOptionalArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
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else
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aEquation.nPara[ 0 ] = 1;
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EnhancedCustomShapeParameter aSource( mpArg->fillNode( rEquations, nullptr, nFlags | EXPRESSION_FLAG_SUMANGLE_MODE ) );
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if ( aSource.Type == EnhancedCustomShapeParameterType::NORMAL )
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{ // sumangle needed :-(
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EnhancedCustomShapeEquation aTmpEquation;
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aTmpEquation.nOperation |= 0xe; // sumangle
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FillEquationParameter( aSource, 1, aTmpEquation );
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aSource.Type = EnhancedCustomShapeParameterType::EQUATION;
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aSource.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aTmpEquation );
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}
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FillEquationParameter( aSource, 1, aEquation );
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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break;
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case ExpressionFunct::UnaryAtan:
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{
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// TODO:
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aRet.Type = EnhancedCustomShapeParameterType::NORMAL;
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}
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break;
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case ExpressionFunct::UnaryNeg:
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{
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EnhancedCustomShapeEquation aEquation;
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aEquation.nOperation |= 1;
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aEquation.nPara[ 1 ] = -1;
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aEquation.nPara[ 2 ] = 1;
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FillEquationParameter( mpArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
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aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
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aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
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rEquations.push_back( aEquation );
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}
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break;
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default:
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break;
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}
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return aRet;
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}
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};
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|
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/** ExpressionNode implementation for unary
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|
function over two ExpressionNodes
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*/
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class BinaryFunctionExpression : public ExpressionNode
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{
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const ExpressionFunct meFunct;
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std::shared_ptr<ExpressionNode> mpFirstArg;
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std::shared_ptr<ExpressionNode> mpSecondArg;
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public:
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BinaryFunctionExpression( const ExpressionFunct eFunct, std::shared_ptr<ExpressionNode> xFirstArg, std::shared_ptr<ExpressionNode> xSecondArg ) :
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meFunct( eFunct ),
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mpFirstArg(std::move( xFirstArg )),
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mpSecondArg(std::move( xSecondArg ))
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{
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}
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#if defined(__clang__) || defined (__GNUC__)
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//GetEquationValueAsDouble calls isFinite on the result
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__attribute__((no_sanitize("float-divide-by-zero")))
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#endif
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static double getValue( const ExpressionFunct eFunct, const std::shared_ptr<ExpressionNode>& rFirstArg, const std::shared_ptr<ExpressionNode>& rSecondArg )
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{
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double fRet = 0;
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switch( eFunct )
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{
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case ExpressionFunct::BinaryPlus : fRet = (*rFirstArg)() + (*rSecondArg)(); break;
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case ExpressionFunct::BinaryMinus: fRet = (*rFirstArg)() - (*rSecondArg)(); break;
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case ExpressionFunct::BinaryMul : fRet = (*rFirstArg)() * (*rSecondArg)(); break;
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case ExpressionFunct::BinaryDiv : fRet = (*rFirstArg)() / (*rSecondArg)(); break;
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case ExpressionFunct::BinaryMin : fRet = ::std::min( (*rFirstArg)(), (*rSecondArg)() ); break;
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case ExpressionFunct::BinaryMax : fRet = ::std::max( (*rFirstArg)(), (*rSecondArg)() ); break;
|
|
case ExpressionFunct::BinaryAtan2: fRet = atan2( (*rFirstArg)(), (*rSecondArg)() ); break;
|
|
default:
|
|
break;
|
|
}
|
|
return fRet;
|
|
}
|
|
virtual double operator()() const override
|
|
{
|
|
return getValue( meFunct, mpFirstArg, mpSecondArg );
|
|
}
|
|
virtual bool isConstant() const override
|
|
{
|
|
return mpFirstArg->isConstant() && mpSecondArg->isConstant();
|
|
}
|
|
virtual ExpressionFunct getType() const override
|
|
{
|
|
return meFunct;
|
|
}
|
|
virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* /*pOptionalArg*/, sal_uInt32 nFlags ) override
|
|
{
|
|
EnhancedCustomShapeParameter aRet;
|
|
switch( meFunct )
|
|
{
|
|
case ExpressionFunct::BinaryPlus :
|
|
{
|
|
if ( nFlags & EXPRESSION_FLAG_SUMANGLE_MODE )
|
|
{
|
|
if ( mpFirstArg->getType() == ExpressionFunct::EnumAdjustment )
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 0xe; // sumangle
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
else if ( mpSecondArg->getType() == ExpressionFunct::EnumAdjustment )
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 0xe; // sumangle
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
else
|
|
{
|
|
EnhancedCustomShapeEquation aSumangle1;
|
|
aSumangle1.nOperation |= 0xe; // sumangle
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags &~EXPRESSION_FLAG_SUMANGLE_MODE ), 1, aSumangle1 );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aSumangle1 );
|
|
|
|
EnhancedCustomShapeEquation aSumangle2;
|
|
aSumangle2.nOperation |= 0xe; // sumangle
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags &~EXPRESSION_FLAG_SUMANGLE_MODE ), 1, aSumangle2 );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aSumangle2 );
|
|
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 0;
|
|
aEquation.nPara[ 0 ] = ( rEquations.size() - 2 ) | 0x400;
|
|
aEquation.nPara[ 1 ] = ( rEquations.size() - 1 ) | 0x400;
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
bool bFirstIsEmpty = mpFirstArg->isConstant() && ( (*mpFirstArg)() == 0 );
|
|
bool bSecondIsEmpty = mpSecondArg->isConstant() && ( (*mpSecondArg)() == 0 );
|
|
|
|
if ( bFirstIsEmpty )
|
|
aRet = mpSecondArg->fillNode( rEquations, nullptr, nFlags );
|
|
else if ( bSecondIsEmpty )
|
|
aRet = mpFirstArg->fillNode( rEquations, nullptr, nFlags );
|
|
else
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 0;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case ExpressionFunct::BinaryMinus:
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 0;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 2, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
break;
|
|
case ExpressionFunct::BinaryMul :
|
|
{
|
|
// in the dest. format the cos function is using integer as result :-(
|
|
// so we can't use the generic algorithm
|
|
if ( ( mpFirstArg->getType() == ExpressionFunct::UnarySin ) || ( mpFirstArg->getType() == ExpressionFunct::UnaryCos ) || ( mpFirstArg->getType() == ExpressionFunct::UnaryTan ) )
|
|
aRet = mpFirstArg->fillNode( rEquations, mpSecondArg.get(), nFlags );
|
|
else if ( ( mpSecondArg->getType() == ExpressionFunct::UnarySin ) || ( mpSecondArg->getType() == ExpressionFunct::UnaryCos ) || ( mpSecondArg->getType() == ExpressionFunct::UnaryTan ) )
|
|
aRet = mpSecondArg->fillNode( rEquations, mpFirstArg.get(), nFlags );
|
|
else
|
|
{
|
|
if ( mpFirstArg->isConstant() && (*mpFirstArg)() == 1 )
|
|
aRet = mpSecondArg->fillNode( rEquations, nullptr, nFlags );
|
|
else if ( mpSecondArg->isConstant() && (*mpSecondArg)() == 1 )
|
|
aRet = mpFirstArg->fillNode( rEquations, nullptr, nFlags );
|
|
else if ( ( mpFirstArg->getType() == ExpressionFunct::BinaryDiv ) // don't care of (pi/180)
|
|
&& ( static_cast<BinaryFunctionExpression*>(mpFirstArg.get())->mpFirstArg->getType() == ExpressionFunct::EnumPi )
|
|
&& ( static_cast<BinaryFunctionExpression*>(mpFirstArg.get())->mpSecondArg->getType() == ExpressionFunct::Const ) )
|
|
{
|
|
aRet = mpSecondArg->fillNode( rEquations, nullptr, nFlags );
|
|
}
|
|
else if ( ( mpSecondArg->getType() == ExpressionFunct::BinaryDiv ) // don't care of (pi/180)
|
|
&& ( static_cast<BinaryFunctionExpression*>(mpSecondArg.get())->mpFirstArg->getType() == ExpressionFunct::EnumPi )
|
|
&& ( static_cast<BinaryFunctionExpression*>(mpSecondArg.get())->mpSecondArg->getType() == ExpressionFunct::Const ) )
|
|
{
|
|
aRet = mpFirstArg->fillNode( rEquations, nullptr, nFlags );
|
|
}
|
|
else
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 1;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aEquation.nPara[ 2 ] = 1;
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case ExpressionFunct::BinaryDiv :
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 1;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
aEquation.nPara[ 1 ] = 1;
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 2, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
break;
|
|
case ExpressionFunct::BinaryMin :
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 4;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
break;
|
|
case ExpressionFunct::BinaryMax :
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 5;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
break;
|
|
case ExpressionFunct::BinaryAtan2:
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 8;
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return aRet;
|
|
}
|
|
};
|
|
|
|
class IfExpression : public ExpressionNode
|
|
{
|
|
std::shared_ptr<ExpressionNode> mpFirstArg;
|
|
std::shared_ptr<ExpressionNode> mpSecondArg;
|
|
std::shared_ptr<ExpressionNode> mpThirdArg;
|
|
|
|
public:
|
|
|
|
IfExpression( std::shared_ptr<ExpressionNode> xFirstArg,
|
|
std::shared_ptr<ExpressionNode> xSecondArg,
|
|
std::shared_ptr<ExpressionNode> xThirdArg ) :
|
|
mpFirstArg(std::move( xFirstArg )),
|
|
mpSecondArg(std::move(xSecondArg )),
|
|
mpThirdArg(std::move( xThirdArg ))
|
|
{
|
|
}
|
|
virtual bool isConstant() const override
|
|
{
|
|
return
|
|
mpFirstArg->isConstant() &&
|
|
mpSecondArg->isConstant() &&
|
|
mpThirdArg->isConstant();
|
|
}
|
|
virtual double operator()() const override
|
|
{
|
|
return (*mpFirstArg)() > 0 ? (*mpSecondArg)() : (*mpThirdArg)();
|
|
}
|
|
virtual ExpressionFunct getType() const override
|
|
{
|
|
return ExpressionFunct::TernaryIf;
|
|
}
|
|
virtual EnhancedCustomShapeParameter fillNode( std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* /*pOptionalArg*/, sal_uInt32 nFlags ) override
|
|
{
|
|
EnhancedCustomShapeParameter aRet;
|
|
aRet.Type = EnhancedCustomShapeParameterType::EQUATION;
|
|
aRet.Value <<= static_cast<sal_Int32>(rEquations.size());
|
|
{
|
|
EnhancedCustomShapeEquation aEquation;
|
|
aEquation.nOperation |= 6;
|
|
FillEquationParameter( mpFirstArg->fillNode( rEquations, nullptr, nFlags ), 0, aEquation );
|
|
FillEquationParameter( mpSecondArg->fillNode( rEquations, nullptr, nFlags ), 1, aEquation );
|
|
FillEquationParameter( mpThirdArg->fillNode( rEquations, nullptr, nFlags ), 2, aEquation );
|
|
rEquations.push_back( aEquation );
|
|
}
|
|
return aRet;
|
|
}
|
|
};
|
|
|
|
|
|
// FUNCTION PARSER
|
|
|
|
|
|
typedef const char* StringIteratorT;
|
|
|
|
struct ParserContext
|
|
{
|
|
typedef ::std::stack< std::shared_ptr<ExpressionNode> > OperandStack;
|
|
|
|
// stores a stack of not-yet-evaluated operands. This is used
|
|
// by the operators (i.e. '+', '*', 'sin' etc.) to pop their
|
|
// arguments from. If all arguments to an operator are constant,
|
|
// the operator pushes a precalculated result on the stack, and
|
|
// a composite ExpressionNode otherwise.
|
|
OperandStack maOperandStack;
|
|
|
|
const EnhancedCustomShape2d* mpCustoShape;
|
|
|
|
};
|
|
|
|
typedef std::shared_ptr< ParserContext > ParserContextSharedPtr;
|
|
|
|
/** Generate parse-dependent-but-then-constant value
|
|
*/
|
|
class DoubleConstantFunctor
|
|
{
|
|
ParserContextSharedPtr mxContext;
|
|
|
|
public:
|
|
explicit DoubleConstantFunctor( ParserContextSharedPtr xContext ) :
|
|
mxContext(std::move( xContext ))
|
|
{
|
|
}
|
|
void operator()( double n ) const
|
|
{
|
|
mxContext->maOperandStack.push( std::make_shared<ConstantValueExpression>( n ) );
|
|
}
|
|
};
|
|
|
|
class EnumFunctor
|
|
{
|
|
const ExpressionFunct meFunct;
|
|
ParserContextSharedPtr mxContext;
|
|
|
|
public:
|
|
|
|
EnumFunctor( const ExpressionFunct eFunct, ParserContextSharedPtr xContext )
|
|
: meFunct( eFunct )
|
|
, mxContext(std::move( xContext ))
|
|
{
|
|
}
|
|
void operator()( StringIteratorT rFirst, StringIteratorT rSecond ) const
|
|
{
|
|
/*double nVal = mnValue;*/
|
|
switch( meFunct )
|
|
{
|
|
case ExpressionFunct::EnumAdjustment :
|
|
{
|
|
OUString aVal( rFirst + 1, rSecond - rFirst, RTL_TEXTENCODING_UTF8 );
|
|
mxContext->maOperandStack.push( std::make_shared<AdjustmentExpression>( *mxContext->mpCustoShape, aVal.toInt32() ) );
|
|
}
|
|
break;
|
|
case ExpressionFunct::EnumEquation :
|
|
{
|
|
OUString aVal( rFirst + 1, rSecond - rFirst, RTL_TEXTENCODING_UTF8 );
|
|
mxContext->maOperandStack.push( std::make_shared<EquationExpression>( *mxContext->mpCustoShape, aVal.toInt32() ) );
|
|
}
|
|
break;
|
|
default:
|
|
mxContext->maOperandStack.push( std::make_shared<EnumValueExpression>( *mxContext->mpCustoShape, meFunct ) );
|
|
}
|
|
}
|
|
};
|
|
|
|
class UnaryFunctionFunctor
|
|
{
|
|
const ExpressionFunct meFunct;
|
|
ParserContextSharedPtr mxContext;
|
|
|
|
public:
|
|
|
|
UnaryFunctionFunctor( const ExpressionFunct eFunct, ParserContextSharedPtr xContext ) :
|
|
meFunct( eFunct ),
|
|
mxContext(std::move( xContext ))
|
|
{
|
|
}
|
|
void operator()( StringIteratorT, StringIteratorT ) const
|
|
{
|
|
ParserContext::OperandStack& rNodeStack( mxContext->maOperandStack );
|
|
|
|
if( rNodeStack.empty() )
|
|
throw ParseError( "Not enough arguments for unary operator" );
|
|
|
|
// retrieve arguments
|
|
std::shared_ptr<ExpressionNode> pArg( std::move(rNodeStack.top()) );
|
|
rNodeStack.pop();
|
|
|
|
if( pArg->isConstant() ) // check for constness
|
|
rNodeStack.push( std::make_shared<ConstantValueExpression>( UnaryFunctionExpression::getValue( meFunct, pArg ) ) );
|
|
else // push complex node, that calcs the value on demand
|
|
rNodeStack.push( std::make_shared<UnaryFunctionExpression>( meFunct, pArg ) );
|
|
}
|
|
};
|
|
|
|
/** Implements a binary function over two ExpressionNodes
|
|
|
|
@tpl Generator
|
|
Generator functor, to generate an ExpressionNode of
|
|
appropriate type
|
|
|
|
*/
|
|
class BinaryFunctionFunctor
|
|
{
|
|
const ExpressionFunct meFunct;
|
|
ParserContextSharedPtr mxContext;
|
|
|
|
public:
|
|
|
|
BinaryFunctionFunctor( const ExpressionFunct eFunct, ParserContextSharedPtr xContext ) :
|
|
meFunct( eFunct ),
|
|
mxContext(std::move( xContext ))
|
|
{
|
|
}
|
|
|
|
void operator()( StringIteratorT, StringIteratorT ) const
|
|
{
|
|
ParserContext::OperandStack& rNodeStack( mxContext->maOperandStack );
|
|
|
|
if( rNodeStack.size() < 2 )
|
|
throw ParseError( "Not enough arguments for binary operator" );
|
|
|
|
// retrieve arguments
|
|
std::shared_ptr<ExpressionNode> pSecondArg( std::move(rNodeStack.top()) );
|
|
rNodeStack.pop();
|
|
std::shared_ptr<ExpressionNode> pFirstArg( std::move(rNodeStack.top()) );
|
|
rNodeStack.pop();
|
|
|
|
assert(pSecondArg && pFirstArg && "count of arg checked before we get here");
|
|
|
|
// create combined ExpressionNode
|
|
auto pNode = std::make_shared<BinaryFunctionExpression>( meFunct, pFirstArg, pSecondArg );
|
|
// check for constness
|
|
if( pFirstArg->isConstant() && pSecondArg->isConstant() ) // call the operator() at pNode, store result in constant value ExpressionNode.
|
|
rNodeStack.push( std::make_shared<ConstantValueExpression>( (*pNode)() ) );
|
|
else // push complex node, that calcs the value on demand
|
|
rNodeStack.push( pNode );
|
|
}
|
|
};
|
|
|
|
class IfFunctor
|
|
{
|
|
ParserContextSharedPtr mxContext;
|
|
|
|
public:
|
|
|
|
explicit IfFunctor( ParserContextSharedPtr xContext ) :
|
|
mxContext(std::move( xContext ))
|
|
{
|
|
}
|
|
void operator()( StringIteratorT, StringIteratorT ) const
|
|
{
|
|
ParserContext::OperandStack& rNodeStack( mxContext->maOperandStack );
|
|
|
|
if( rNodeStack.size() < 3 )
|
|
throw ParseError( "Not enough arguments for ternary operator" );
|
|
|
|
// retrieve arguments
|
|
std::shared_ptr<ExpressionNode> pThirdArg( std::move(rNodeStack.top()) );
|
|
rNodeStack.pop();
|
|
std::shared_ptr<ExpressionNode> pSecondArg( std::move(rNodeStack.top()) );
|
|
rNodeStack.pop();
|
|
std::shared_ptr<ExpressionNode> pFirstArg( std::move(rNodeStack.top()) );
|
|
rNodeStack.pop();
|
|
|
|
assert(pThirdArg && pSecondArg && pFirstArg);
|
|
|
|
// create combined ExpressionNode
|
|
auto pNode = std::make_shared<IfExpression>( pFirstArg, pSecondArg, pThirdArg );
|
|
// check for constness
|
|
if( pFirstArg->isConstant() && pSecondArg->isConstant() && pThirdArg->isConstant() )
|
|
rNodeStack.push( std::make_shared<ConstantValueExpression>( (*pNode)() ) ); // call the operator() at pNode, store result in constant value ExpressionNode.
|
|
else
|
|
rNodeStack.push( pNode ); // push complex node, that calcs the value on demand
|
|
}
|
|
};
|
|
|
|
// Workaround for MSVC compiler anomaly (stack trashing)
|
|
|
|
// The default ureal_parser_policies implementation of parse_exp
|
|
// triggers a really weird error in MSVC7 (Version 13.00.9466), in
|
|
// that the real_parser_impl::parse_main() call of parse_exp()
|
|
// overwrites the frame pointer _on the stack_ (EBP of the calling
|
|
// function gets overwritten while lying on the stack).
|
|
|
|
// For the time being, our parser thus can only read the 1.0E10
|
|
// notation, not the 1.0e10 one.
|
|
|
|
// TODO(F1): Also handle the 1.0e10 case here.
|
|
template< typename T > struct custom_real_parser_policies : public ::boost::spirit::classic::ureal_parser_policies<T>
|
|
{
|
|
template< typename ScannerT >
|
|
static typename ::boost::spirit::classic::parser_result< ::boost::spirit::classic::chlit<>, ScannerT >::type
|
|
parse_exp(ScannerT& scan)
|
|
{
|
|
// as_lower_d somehow breaks MSVC7
|
|
return ::boost::spirit::classic::ch_p('E').parse(scan);
|
|
}
|
|
};
|
|
|
|
/* This class implements the following grammar (more or
|
|
less literally written down below, only slightly
|
|
obfuscated by the parser actions):
|
|
|
|
identifier = '$'|'pi'|'e'|'X'|'Y'|'Width'|'Height'
|
|
|
|
function = 'abs'|'sqrt'|'sin'|'cos'|'tan'|'atan'|'acos'|'asin'|'exp'|'log'
|
|
|
|
basic_expression =
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number |
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identifier |
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function '(' additive_expression ')' |
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'(' additive_expression ')'
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unary_expression =
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'-' basic_expression |
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basic_expression
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multiplicative_expression =
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unary_expression ( ( '*' unary_expression )* |
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( '/' unary_expression )* )
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additive_expression =
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multiplicative_expression ( ( '+' multiplicative_expression )* |
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( '-' multiplicative_expression )* )
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*/
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class ExpressionGrammar : public ::boost::spirit::classic::grammar< ExpressionGrammar >
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{
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public:
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/** Create an arithmetic expression grammar
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@param rParserContext
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Contains context info for the parser
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*/
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explicit ExpressionGrammar( ParserContextSharedPtr xParserContext ) :
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mpParserContext(std::move( xParserContext ))
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{
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}
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template< typename ScannerT > class definition
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{
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public:
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// grammar definition
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explicit definition( const ExpressionGrammar& self )
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{
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using ::boost::spirit::classic::str_p;
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using ::boost::spirit::classic::range_p;
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using ::boost::spirit::classic::lexeme_d;
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using ::boost::spirit::classic::real_parser;
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identifier =
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str_p( "pi" )[ EnumFunctor(ExpressionFunct::EnumPi, self.getContext() ) ]
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| str_p( "left" )[ EnumFunctor(ExpressionFunct::EnumLeft, self.getContext() ) ]
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| str_p( "top" )[ EnumFunctor(ExpressionFunct::EnumTop, self.getContext() ) ]
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| str_p( "right" )[ EnumFunctor(ExpressionFunct::EnumRight, self.getContext() ) ]
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| str_p( "bottom" )[ EnumFunctor(ExpressionFunct::EnumBottom, self.getContext() ) ]
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| str_p( "xstretch" )[ EnumFunctor(ExpressionFunct::EnumXStretch, self.getContext() ) ]
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| str_p( "ystretch" )[ EnumFunctor(ExpressionFunct::EnumYStretch, self.getContext() ) ]
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| str_p( "hasstroke" )[ EnumFunctor(ExpressionFunct::EnumHasStroke, self.getContext() ) ]
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| str_p( "hasfill" )[ EnumFunctor(ExpressionFunct::EnumHasFill, self.getContext() ) ]
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| str_p( "width" )[ EnumFunctor(ExpressionFunct::EnumWidth, self.getContext() ) ]
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| str_p( "height" )[ EnumFunctor(ExpressionFunct::EnumHeight, self.getContext() ) ]
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| str_p( "logwidth" )[ EnumFunctor(ExpressionFunct::EnumLogWidth, self.getContext() ) ]
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| str_p( "logheight" )[ EnumFunctor(ExpressionFunct::EnumLogHeight, self.getContext() ) ]
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;
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unaryFunction =
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(str_p( "abs" ) >> '(' >> additiveExpression >> ')' )[ UnaryFunctionFunctor( ExpressionFunct::UnaryAbs, self.getContext()) ]
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| (str_p( "sqrt" ) >> '(' >> additiveExpression >> ')' )[ UnaryFunctionFunctor( ExpressionFunct::UnarySqrt, self.getContext()) ]
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| (str_p( "sin" ) >> '(' >> additiveExpression >> ')' )[ UnaryFunctionFunctor( ExpressionFunct::UnarySin, self.getContext()) ]
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| (str_p( "cos" ) >> '(' >> additiveExpression >> ')' )[ UnaryFunctionFunctor( ExpressionFunct::UnaryCos, self.getContext()) ]
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| (str_p( "tan" ) >> '(' >> additiveExpression >> ')' )[ UnaryFunctionFunctor( ExpressionFunct::UnaryTan, self.getContext()) ]
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| (str_p( "atan" ) >> '(' >> additiveExpression >> ')' )[ UnaryFunctionFunctor( ExpressionFunct::UnaryAtan, self.getContext()) ]
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;
|
|
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binaryFunction =
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(str_p( "min" ) >> '(' >> additiveExpression >> ',' >> additiveExpression >> ')' )[ BinaryFunctionFunctor( ExpressionFunct::BinaryMin, self.getContext()) ]
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| (str_p( "max" ) >> '(' >> additiveExpression >> ',' >> additiveExpression >> ')' )[ BinaryFunctionFunctor( ExpressionFunct::BinaryMax, self.getContext()) ]
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| (str_p( "atan2") >> '(' >> additiveExpression >> ',' >> additiveExpression >> ')' )[ BinaryFunctionFunctor( ExpressionFunct::BinaryAtan2,self.getContext()) ]
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|
;
|
|
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|
ternaryFunction =
|
|
(str_p( "if" ) >> '(' >> additiveExpression >> ',' >> additiveExpression >> ',' >> additiveExpression >> ')' )[ IfFunctor( self.getContext() ) ]
|
|
;
|
|
|
|
funcRef_decl =
|
|
lexeme_d[ +( range_p('a','z') | range_p('A','Z') | range_p('0','9') ) ];
|
|
|
|
functionReference =
|
|
(str_p( "?" ) >> funcRef_decl )[ EnumFunctor( ExpressionFunct::EnumEquation, self.getContext() ) ];
|
|
|
|
modRef_decl =
|
|
lexeme_d[ +( range_p('0','9') ) ];
|
|
|
|
modifierReference =
|
|
(str_p( "$" ) >> modRef_decl )[ EnumFunctor( ExpressionFunct::EnumAdjustment, self.getContext() ) ];
|
|
|
|
basicExpression =
|
|
real_parser<double, custom_real_parser_policies<double> >()[ DoubleConstantFunctor(self.getContext()) ]
|
|
| identifier
|
|
| functionReference
|
|
| modifierReference
|
|
| unaryFunction
|
|
| binaryFunction
|
|
| ternaryFunction
|
|
| '(' >> additiveExpression >> ')'
|
|
;
|
|
|
|
unaryExpression =
|
|
('-' >> basicExpression)[ UnaryFunctionFunctor( ExpressionFunct::UnaryNeg, self.getContext()) ]
|
|
| basicExpression
|
|
;
|
|
|
|
multiplicativeExpression =
|
|
unaryExpression
|
|
>> *( ('*' >> unaryExpression)[ BinaryFunctionFunctor( ExpressionFunct::BinaryMul, self.getContext()) ]
|
|
| ('/' >> unaryExpression)[ BinaryFunctionFunctor( ExpressionFunct::BinaryDiv, self.getContext()) ]
|
|
)
|
|
;
|
|
|
|
additiveExpression =
|
|
multiplicativeExpression
|
|
>> *( ('+' >> multiplicativeExpression)[ BinaryFunctionFunctor( ExpressionFunct::BinaryPlus, self.getContext()) ]
|
|
| ('-' >> multiplicativeExpression)[ BinaryFunctionFunctor( ExpressionFunct::BinaryMinus, self.getContext()) ]
|
|
)
|
|
;
|
|
|
|
BOOST_SPIRIT_DEBUG_RULE(additiveExpression);
|
|
BOOST_SPIRIT_DEBUG_RULE(multiplicativeExpression);
|
|
BOOST_SPIRIT_DEBUG_RULE(unaryExpression);
|
|
BOOST_SPIRIT_DEBUG_RULE(basicExpression);
|
|
BOOST_SPIRIT_DEBUG_RULE(unaryFunction);
|
|
BOOST_SPIRIT_DEBUG_RULE(binaryFunction);
|
|
BOOST_SPIRIT_DEBUG_RULE(ternaryFunction);
|
|
BOOST_SPIRIT_DEBUG_RULE(identifier);
|
|
}
|
|
|
|
const ::boost::spirit::classic::rule< ScannerT >& start() const
|
|
{
|
|
return additiveExpression;
|
|
}
|
|
|
|
private:
|
|
// the constituents of the Spirit arithmetic expression grammar.
|
|
// For the sake of readability, without 'ma' prefix.
|
|
::boost::spirit::classic::rule< ScannerT > additiveExpression;
|
|
::boost::spirit::classic::rule< ScannerT > multiplicativeExpression;
|
|
::boost::spirit::classic::rule< ScannerT > unaryExpression;
|
|
::boost::spirit::classic::rule< ScannerT > basicExpression;
|
|
::boost::spirit::classic::rule< ScannerT > unaryFunction;
|
|
::boost::spirit::classic::rule< ScannerT > binaryFunction;
|
|
::boost::spirit::classic::rule< ScannerT > ternaryFunction;
|
|
::boost::spirit::classic::rule< ScannerT > funcRef_decl;
|
|
::boost::spirit::classic::rule< ScannerT > functionReference;
|
|
::boost::spirit::classic::rule< ScannerT > modRef_decl;
|
|
::boost::spirit::classic::rule< ScannerT > modifierReference;
|
|
::boost::spirit::classic::rule< ScannerT > identifier;
|
|
};
|
|
|
|
const ParserContextSharedPtr& getContext() const
|
|
{
|
|
return mpParserContext;
|
|
}
|
|
|
|
private:
|
|
ParserContextSharedPtr mpParserContext; // might get modified during parsing
|
|
};
|
|
|
|
const ParserContextSharedPtr& getParserContext()
|
|
{
|
|
static ParserContextSharedPtr lcl_parserContext = std::make_shared<ParserContext>();
|
|
|
|
// clear node stack (since we reuse the static object, that's
|
|
// the whole point here)
|
|
while( !lcl_parserContext->maOperandStack.empty() )
|
|
lcl_parserContext->maOperandStack.pop();
|
|
|
|
return lcl_parserContext;
|
|
}
|
|
|
|
}
|
|
|
|
namespace EnhancedCustomShape {
|
|
|
|
|
|
std::shared_ptr<ExpressionNode> const & FunctionParser::parseFunction( std::u16string_view rFunction, const EnhancedCustomShape2d& rCustoShape )
|
|
{
|
|
// TODO(Q1): Check if a combination of the RTL_UNICODETOTEXT_FLAGS_*
|
|
// gives better conversion robustness here (we might want to map space
|
|
// etc. to ASCII space here)
|
|
const OString aAsciiFunction(
|
|
OUStringToOString( rFunction, RTL_TEXTENCODING_ASCII_US ) );
|
|
|
|
StringIteratorT aStart( aAsciiFunction.getStr() );
|
|
StringIteratorT aEnd( aAsciiFunction.getStr()+aAsciiFunction.getLength() );
|
|
|
|
// static parser context, because the actual
|
|
// Spirit parser is also a static object
|
|
const ParserContextSharedPtr& pContext = getParserContext();
|
|
pContext->mpCustoShape = &rCustoShape;
|
|
|
|
ExpressionGrammar aExpressionGrammer( pContext );
|
|
const ::boost::spirit::classic::parse_info<StringIteratorT> aParseInfo(
|
|
::boost::spirit::classic::parse( aStart,
|
|
aEnd,
|
|
aExpressionGrammer >> ::boost::spirit::classic::end_p,
|
|
::boost::spirit::classic::space_p ) );
|
|
|
|
// input fully congested by the parser?
|
|
if( !aParseInfo.full )
|
|
throw ParseError( "EnhancedCustomShapeFunctionParser::parseFunction(): string not fully parseable" );
|
|
|
|
// parser's state stack now must contain exactly _one_ ExpressionNode,
|
|
// which represents our formula.
|
|
if( pContext->maOperandStack.size() != 1 )
|
|
throw ParseError( "EnhancedCustomShapeFunctionParser::parseFunction(): incomplete or empty expression" );
|
|
|
|
|
|
return pContext->maOperandStack.top();
|
|
}
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|