/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
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*
* Licensed to the Apache Software Foundation (ASF) under one or more
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*/
#ifndef INCLUDED_SVX_ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
#define INCLUDED_SVX_ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
#include <config_options.h>
#include <sal/config.h>
#include <com/sun/star/drawing/EnhancedCustomShapeParameter.hpp>
#include <memory>
#include <ostream>
#include <string_view>
#include <vector>
#include <svx/svxdllapi.h>
struct EnhancedCustomShapeEquation
{
sal_Int32 nOperation;
sal_Int32 nPara[ 3 ];
EnhancedCustomShapeEquation() :
nOperation ( 0 )
{
nPara[ 0 ] = nPara[ 1 ] = nPara[ 2 ] = 0;
}
};
class EnhancedCustomShape2d;
namespace EnhancedCustomShape {
enum class ExpressionFunct
{
Const,
EnumPi,
EnumLeft,
EnumTop,
EnumRight,
EnumBottom,
EnumXStretch,
EnumYStretch,
EnumHasStroke,
EnumHasFill,
EnumWidth,
EnumHeight,
EnumLogWidth,
EnumLogHeight,
EnumAdjustment,
EnumEquation,
UnaryAbs,
UnarySqrt,
UnarySin,
UnaryCos,
UnaryTan,
UnaryAtan,
UnaryNeg,
BinaryPlus,
BinaryMinus,
BinaryMul,
BinaryDiv,
BinaryMin,
BinaryMax,
BinaryAtan2,
TernaryIf
};
template<
typename charT,
typename traits >
inline std::basic_ostream<charT, traits> &
operator <<(
std::basic_ostream<charT, traits> & stream,
const ExpressionFunct& eFunc )
{
switch (eFunc)
{
case ExpressionFunct::
Const :
return stream <<
"const";
case ExpressionFunct::EnumPi :
return stream <<
"pi";
case ExpressionFunct::EnumLeft :
return stream <<
"left";
case ExpressionFunct::EnumTop :
return stream <<
"top";
case ExpressionFunct::EnumRight :
return stream <<
"right";
case ExpressionFunct::EnumBottom :
return stream <<
"bottom";
case ExpressionFunct::EnumXStretch :
return stream <<
"xstretch";
case ExpressionFunct::EnumYStretch :
return stream <<
"ystretch";
case ExpressionFunct::EnumHasStroke :
return stream <<
"hasstroke";
case ExpressionFunct::EnumHasFill :
return stream <<
"hasfill";
case ExpressionFunct::EnumWidth :
return stream <<
"width";
case ExpressionFunct::EnumHeight :
return stream <<
"height";
case ExpressionFunct::EnumLogWidth :
return stream <<
"logwidth";
case ExpressionFunct::EnumLogHeight :
return stream <<
"logheight";
case ExpressionFunct::EnumAdjustment :
return stream <<
"adjustment";
case ExpressionFunct::EnumEquation :
return stream <<
"equation";
case ExpressionFunct::UnaryAbs :
return stream <<
"abs";
case ExpressionFunct::UnarySqrt :
return stream <<
"sqrt";
case ExpressionFunct::UnarySin :
return stream <<
"sin";
case ExpressionFunct::UnaryCos :
return stream <<
"cos";
case ExpressionFunct::UnaryTan :
return stream <<
"tan";
case ExpressionFunct::UnaryAtan :
return stream <<
"atan";
case ExpressionFunct::UnaryNeg :
return stream <<
"neg";
case ExpressionFunct::BinaryPlus :
return stream <<
"plus";
case ExpressionFunct::BinaryMinus :
return stream <<
"minus";
case ExpressionFunct::BinaryMul :
return stream <<
"mul";
case ExpressionFunct::BinaryDiv :
return stream <<
"div";
case ExpressionFunct::BinaryMin :
return stream <<
"min";
case ExpressionFunct::BinaryMax :
return stream <<
"max";
case ExpressionFunct::BinaryAtan2 :
return stream <<
"atan2";
case ExpressionFunct::TernaryIf :
return stream <<
"if";
default:
return stream <<
"?(" <<
static_cast<
int>(eFunc) <<
")";
}
}
#define EXPRESSION_FLAG_SUMANGLE_MODE 1
SVXCORE_DLLPUBLIC
void FillEquationParameter(
const css::drawing::EnhancedCustomShap
eParameter&, const sal_Int32, EnhancedCustomShapeEquation& );
class SAL_DLLPUBLIC_RTTI ExpressionNode
{
public:
virtual ~ExpressionNode();
/** Predicate whether this node is constant.
This predicate returns true, if this node is
neither time- nor ViewInfo dependent. This allows
for certain optimizations, i.e. not the full
expression tree needs be represented by
ExpressionNodes.
@returns true, if the note is constant
*/
virtual bool isConstant() const = 0;
/** Operator to calculate function value.
This method calculates the function value.
*/
virtual double operator()() const = 0;
/** Operator to retrieve the type of expression node
*/
virtual ExpressionFunct getType() const = 0;
/** Operator to retrieve the ms version of expression
*/
virtual css::drawing::EnhancedCustomShapeParameter fillNode(
std::vector< EnhancedCustomShapeEquation >& rEquations, ExpressionNode* pOptionalArg, sal_uInt32 nFlags ) = 0;
};
/** This exception is thrown, when the arithmetic expression
parser failed to parse a string.
*/
struct ParseError
{
ParseError( const char* ) {}
};
class FunctionParser
{
public:
/** Parse a string
The following grammar is accepted by this method:
<code>
number_digit = '0'|'1'|'2'|'3'|'4'|'5'|'6'|'7'|'8'|'9'
number = number number_digit | number_digit
identifier = 'pi'|'left'|'top'|'right'|'bottom'|'xstretch'|'ystretch'|
'hasstroke'|'hasfill'|'width'|'height'|'logwidth'|'logheight'
unary_function = 'abs'|'sqrt'|'sin'|'cos'|'tan'|'atan'
binary_function = 'min'|'max'|'atan2'
ternary_function = 'if'
function_reference = '?' 'a-z,A-Z,0-9' ' '
modifier_reference = '$' '0-9' ' '
basic_expression =
number |
identifier |
function_reference |
unary_function '(' additive_expression ')' |
binary_function '(' additive_expression ',' additive_expression ')' |
ternary_function '(' additive_expression ',' additive_expression ',
' additive_expression ')' | '(' additive_expression ')'
unary_expression = '-' basic_expression
multiplicative_expression =
basic_expression |
multiplicative_expression '*' basic_expression |
multiplicative_expression '/' basic_expression
additive_expression =
multiplicative_expression |
additive_expression '+' multiplicative_expression |
additive_expression '-' multiplicative_expression
</code>
@param rFunction
The string to parse
@param rCustoShape
The CustomShape is required for calculation of dynamic values such
"hasstroke", function references and or modifier references ...
@throws ParseError if an invalid expression is given.
@return the generated function object.
*/
UNLESS_MERGELIBS(SVXCORE_DLLPUBLIC) static std::shared_ptr<ExpressionNode> const & parseFunction( std::u16string_view rFunction, const EnhancedCustomShape2d& rCustoShape );
// this is a singleton
FunctionParser() = delete;
FunctionParser(const FunctionParser&) = delete;
FunctionParser& operator=( const FunctionParser& ) = delete;
};
}
#endif // INCLUDED_SVX_ENHANCEDCUSTOMSHAPEFUNCTIONPARSER_HXX
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