Mathematical expressions parser. More...
#include <qmuparser.h>
Public Member Functions | |
QmuParser () | |
Constructor. More... | |
virtual void | InitCharSets () Q_DECL_OVERRIDE |
Define the character sets. More... | |
virtual void | InitFun () Q_DECL_OVERRIDE |
Initialize the default functions. More... | |
virtual void | InitConst () Q_DECL_OVERRIDE |
Initialize constants. More... | |
virtual void | InitOprt () Q_DECL_OVERRIDE |
Initialize operators. More... | |
virtual void | OnDetectVar (const QString &pExpr, int &nStart, int &nEnd) Q_DECL_OVERRIDE |
qreal | Diff (qreal *a_Var, qreal a_fPos, qreal a_fEpsilon=0) const |
Numerically differentiate with regard to a variable. More... | |
Public Member Functions inherited from qmu::QmuParserBase | |
QmuParserBase () | |
Constructor. More... | |
QmuParserBase (const QmuParserBase &a_Parser) | |
Copy constructor. More... | |
QmuParserBase & | operator= (const QmuParserBase &a_Parser) |
Assignement operator. More... | |
virtual | ~QmuParserBase () |
qreal | Eval () const |
Calculate the result. More... | |
qreal * | Eval (int &nStackSize) const |
Evaluate an expression containing comma seperated subexpressions. More... | |
void | Eval (qreal *results, int nBulkSize) const |
int | GetNumResults () const |
Return the number of results on the calculation stack. More... | |
void | SetExpr (const QString &a_sExpr) |
Set the formula. More... | |
void | SetVarFactory (facfun_type a_pFactory, void *pUserData=nullptr) |
Set a function that can create variable pointer for unknown expression variables. More... | |
void | ResetLocale () |
Resets the locale. More... | |
void | EnableOptimizer (bool a_bIsOn=true) |
Enable or disable the formula optimization feature. More... | |
void | EnableBuiltInOprt (bool a_bIsOn=true) |
Enable or disable the built in binary operators. More... | |
bool | HasBuiltInOprt () const |
Query status of built in variables. More... | |
void | AddValIdent (identfun_type a_pCallback) |
Add a value parsing function. More... | |
void | DefineOprt (const QString &a_sName, fun_type2 a_pFun, unsigned a_iPrec=0, EOprtAssociativity a_eAssociativity=oaLEFT, bool a_bAllowOpt=false) |
Define a binary operator. More... | |
void | DefineConst (const QString &a_sName, qreal a_fVal) |
Add a user defined constant. More... | |
void | DefineStrConst (const QString &a_strName, const QString &a_strVal) |
Define a new string constant. More... | |
void | DefineVar (const QString &a_sName, qreal *a_pVar) |
Add a user defined variable. More... | |
void | DefinePostfixOprt (const QString &a_sFun, fun_type1 a_pFun, bool a_bAllowOpt=true) |
Add a user defined operator. More... | |
void | DefineInfixOprt (const QString &a_sName, fun_type1 a_pFun, int a_iPrec=prINFIX, bool a_bAllowOpt=true) |
Add a user defined operator. More... | |
void | ClearVar () |
Clear all user defined variables. More... | |
void | ClearFun () |
Clear all functions. More... | |
void | ClearConst () |
Clear all user defined constants. More... | |
void | ClearInfixOprt () |
Clear the user defined Prefix operators. More... | |
void | ClearPostfixOprt () |
Clear all user defined postfix operators. More... | |
void | ClearOprt () |
Clear all user defined binary operators. More... | |
void | RemoveVar (const QString &a_strVarName) |
Remove a variable from internal storage. More... | |
const varmap_type & | GetUsedVar () const |
Return a map containing the used variables only. More... | |
const varmap_type & | GetVar () const |
Return a map containing the used variables only. More... | |
const valmap_type & | GetConst () const |
Return a map containing all parser constants. More... | |
const QString & | GetExpr () const |
Retrieve the formula. More... | |
const funmap_type & | GetFunDef () const |
Return prototypes of all parser functions. More... | |
QMap< int, QString > | GetTokens () const |
QMap< int, QString > | GetNumbers () const |
void | DefineNameChars (const QString &a_szCharset) |
Define the set of valid characters to be used in names of functions, variables, constants. More... | |
void | DefineOprtChars (const QString &a_szCharset) |
Define the set of valid characters to be used in names of binary operators and postfix operators. More... | |
void | DefineInfixOprtChars (const QString &a_szCharset) |
Define the set of valid characters to be used in names of infix operators. More... | |
const QString & | ValidNameChars () const |
Virtual function that defines the characters allowed in name identifiers. More... | |
const QString & | ValidOprtChars () const |
Virtual function that defines the characters allowed in operator definitions. More... | |
const QString & | ValidInfixOprtChars () const |
Virtual function that defines the characters allowed in infix operator definitions. More... | |
void | SetArgSep (char_type cArgSep) |
Set argument separator. More... | |
QChar | GetArgSep () const |
Get the argument separator character. More... | |
void Q_NORETURN | Error (EErrorCodes a_iErrc, int a_iPos=-1, const QString &a_sTok=QString()) const |
Create an error containing the parse error position. More... | |
template<typename T > | |
void | DefineFun (const QString &a_strName, T a_pFun, bool a_bAllowOpt=true) |
Define a parser function without arguments. More... | |
void | setAllowSubexpressions (bool value) |
QLocale | getLocale () const |
void | setLocale (const QLocale &value) |
QChar | getDecimalPoint () const |
void | setDecimalPoint (const QChar &c) |
QChar | getThousandsSeparator () const |
void | setThousandsSeparator (const QChar &c) |
Static Protected Member Functions | |
static int | IsVal (const QString &a_szExpr, int *a_iPos, qreal *a_fVal, const QLocale &locale, const QChar &decimal, const QChar &thousand) |
Default value recognition callback. More... | |
static qreal | Sinh (qreal) |
static qreal | Cosh (qreal) |
static qreal | Tanh (qreal) |
static qreal | ASinh (qreal) |
static qreal | ACosh (qreal) |
static qreal | ATanh (qreal) |
static qreal | DegreeToRadian (qreal) |
static qreal | RadianToDegree (qreal) |
static qreal | SinD (qreal) |
static qreal | CosD (qreal) |
static qreal | TanD (qreal) |
static qreal | ASinD (qreal) |
static qreal | ACosD (qreal) |
static qreal | ATanD (qreal) |
static qreal | Log2 (qreal) |
static qreal | Log10 (qreal) |
static qreal | Abs (qreal) |
static qreal | Rint (qreal) |
static qreal | Sign (qreal) |
static qreal | FMod (qreal, qreal) |
static qreal | UnaryMinus (qreal v) |
Callback for the unary minus operator. More... | |
static qreal | Sum (const qreal *, int) |
Callback for adding multiple values. More... | |
static qreal | Avg (const qreal *, int) |
Callback for averaging multiple values. More... | |
static qreal | Min (const qreal *, int) |
Callback for determining the minimum value out of a vector. More... | |
static qreal | Max (const qreal *, int) |
Callback for determining the maximum value out of a vector. More... | |
Additional Inherited Members | |
Static Public Member Functions inherited from qmu::QmuParserBase | |
static void | EnableDebugDump (bool bDumpCmd, bool bDumpStack) |
Enable the dumping of bytecode amd stack content on the console. More... | |
static QString | GetVersion (EParserVersionInfo eInfo=pviFULL) |
Returns the version of muparser. More... | |
static const QStringList & | GetOprtDef () |
Get the default symbols used for the built in operators. More... | |
Protected Member Functions inherited from qmu::QmuParserBase | |
void | Init () |
Initialize user defined functions. More... | |
Protected Attributes inherited from qmu::QmuParserBase | |
QLocale | m_locale |
The locale used by the parser. More... | |
QChar | m_decimalPoint |
QChar | m_thousandsSeparator |
Static Protected Attributes inherited from qmu::QmuParserBase | |
static const QStringList | c_DefaultOprt |
Identifiers for built in binary operators. More... | |
static bool | g_DbgDumpCmdCode = false |
static bool | g_DbgDumpStack = false |
Mathematical expressions parser.
Standard implementation of the mathematical expressions parser. Can be used as a reference implementation for subclassing the parser.
(C) 2011 Ingo Berg
muparser(at)gmx.de
Definition at line 49 of file qmuparser.h.
qmu::QmuParser::QmuParser | ( | ) |
Constructor.
Call QmuParserBase class constructor and trigger Function, Operator and Constant initialization.
Definition at line 300 of file qmuparser.cpp.
References qmu::QmuParserBase::AddValIdent(), InitCharSets(), InitConst(), InitFun(), InitOprt(), and IsVal().
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Definition at line 162 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 114 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 78 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 102 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 66 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 126 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 90 of file qmuparser.cpp.
Referenced by InitFun().
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Callback for averaging multiple values.
[in] | a_afArg | Vector with the function arguments |
[in] | a_iArgc | The size of a_afArg |
Definition at line 212 of file qmuparser.cpp.
References translate.
Referenced by InitFun().
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Definition at line 108 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 72 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 48 of file qmuparser.cpp.
Referenced by InitFun().
qreal qmu::QmuParser::Diff | ( | qreal * | a_Var, |
qreal | a_fPos, | ||
qreal | a_fEpsilon = 0 |
||
) | const |
Numerically differentiate with regard to a variable.
[in] | a_Var | Pointer to the differentiation variable. |
[in] | a_fPos | Position at which the differentiation should take place. |
[in] | a_fEpsilon | Epsilon used for the numerical differentiation. |
Numerical differentiation uses a 5 point operator yielding a 4th order formula. The default value for epsilon is 0.00074 which is numeric_limits<double>::epsilon() ^ (1/5) as suggested in the muQmuParser forum:
http://sourceforge.net/forum/forum.php?thread_id=1994611&forum_id=462843
Definition at line 444 of file qmuparser.cpp.
References qmu::QmuParserBase::Eval().
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Definition at line 180 of file qmuparser.cpp.
Referenced by InitFun().
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Define the character sets.
This function is used for initializing the default character sets that define the characters to be useable in function and variable names and operators.
Implements qmu::QmuParserBase.
Reimplemented in qmu::QmuFormulaBase.
Definition at line 318 of file qmuparser.cpp.
References qmu::QmuParserBase::DefineInfixOprtChars(), qmu::QmuParserBase::DefineNameChars(), and qmu::QmuParserBase::DefineOprtChars().
Referenced by QmuParser().
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Initialize constants.
By default the QmuParser recognizes two constants. Pi ("pi") and the eulerian number ("_e").
Implements qmu::QmuParserBase.
Definition at line 384 of file qmuparser.cpp.
References qmu::QmuParserBase::DefineConst().
Referenced by QmuParser().
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Initialize the default functions.
Implements qmu::QmuParserBase.
Definition at line 329 of file qmuparser.cpp.
References Abs(), ACosD(), ACosh(), ASinD(), ASinh(), ATanD(), ATanh(), Avg(), CosD(), Cosh(), qmu::QmuParserBase::DefineFun(), DegreeToRadian(), FMod(), Log10(), Log2(), Max(), Min(), RadianToDegree(), Rint(), Sign(), SinD(), Sinh(), Sum(), TanD(), and Tanh().
Referenced by QmuParser().
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Initialize operators.
By default only the unary minus operator is added.
Implements qmu::QmuParserBase.
Definition at line 396 of file qmuparser.cpp.
References qmu::QmuParserBase::DefineInfixOprt(), qmu::QmuParserBase::m_locale, and UnaryMinus().
Referenced by QmuParser().
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staticprotected |
Default value recognition callback.
[in] | a_szExpr | Pointer to the expression |
[in,out] | a_iPos | Pointer to an index storing the current position within the expression |
[out] | a_fVal | Pointer where the value should be stored in case one is found. |
Definition at line 277 of file qmuparser.cpp.
References ReadVal().
Referenced by QmuParser().
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Definition at line 149 of file qmuparser.cpp.
References qmu::ecDOMAIN_ERROR.
Referenced by InitFun().
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Definition at line 136 of file qmuparser.cpp.
References qmu::ecDOMAIN_ERROR.
Referenced by InitFun().
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Callback for determining the maximum value out of a vector.
[in] | a_afArg | Vector with the function arguments |
[in] | a_iArgc | The size of a_afArg |
Definition at line 254 of file qmuparser.cpp.
References translate.
Referenced by InitFun().
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Callback for determining the minimum value out of a vector.
[in] | a_afArg | Vector with the function arguments |
[in] | a_iArgc | The size of a_afArg |
Definition at line 233 of file qmuparser.cpp.
References translate.
Referenced by InitFun().
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Reimplemented from qmu::QmuParserBase.
Definition at line 402 of file qmuparser.cpp.
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Definition at line 54 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 168 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 174 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 96 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 60 of file qmuparser.cpp.
Referenced by InitFun().
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Callback for adding multiple values.
[in] | a_afArg | Vector with the function arguments |
[in] | a_iArgc | The size of a_afArg |
Definition at line 191 of file qmuparser.cpp.
References translate.
Referenced by InitFun().
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Definition at line 120 of file qmuparser.cpp.
Referenced by InitFun().
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Definition at line 84 of file qmuparser.cpp.
Referenced by InitFun().
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inlinestaticprotected |
Callback for the unary minus operator.
v | The value to negate |
Definition at line 104 of file qmuparser.h.
Referenced by InitOprt().