Bytecode implementation of the Math Parser. More...

#include <qmuparserbytecode.h>

Collaboration diagram for qmu::QmuParserByteCode:

Public Member Functions
	QmuParserByteCode ()
	Bytecode default constructor. More...

	QmuParserByteCode (const QmuParserByteCode &a_ByteCode)
	Copy constructor. More...

QmuParserByteCode &	operator= (const QmuParserByteCode &a_ByteCode)
	Assignment operator. More...

void	Assign (const QmuParserByteCode &a_ByteCode)
	Copy state of another object to this. More...

void	AddVar (qreal *a_pVar)
	Add a Variable pointer to bytecode. More...

void	AddVal (qreal a_fVal)
	Add a Variable pointer to bytecode. More...

void	AddOp (ECmdCode a_Oprt)
	Add an operator identifier to bytecode. More...

void	AddIfElse (ECmdCode a_Oprt)

void	AddAssignOp (qreal *a_pVar)
	Add an assignement operator. More...

void	AddFun (generic_fun_type a_pFun, int a_iArgc)
	Add function to bytecode. More...

void	AddBulkFun (generic_fun_type a_pFun, int a_iArgc)
	Add a bulk function to bytecode. More...

void	AddStrFun (generic_fun_type a_pFun, int a_iArgc, int a_iIdx)
	Add Strung function entry to the parser bytecode. More...

void	EnableOptimizer (bool bStat)

void	Finalize ()
	Add end marker to bytecode. More...

void	clear ()
	Delete the bytecode. More...

int	GetMaxStackSize () const

int	GetSize () const
	Returns the number of entries in the bytecode. More...

const SToken *	GetBase () const

void	AsciiDump ()
	Dump bytecode (for debugging only!). More...

Private Types
typedef QmuParserToken< qreal, string_type >	token_type
	Token type for internal use only. More...

typedef QVector< SToken >	rpn_type
	Token vector for storing the RPN. More...

Private Member Functions
void	ConstantFolding (ECmdCode a_Oprt)

Private Attributes
unsigned	m_iStackPos
	Position in the Calculation array. More...

unsigned	m_iMaxStackSize
	Maximum size needed for the stack. More...

rpn_type	m_vRPN
	The actual rpn storage. More...

bool	m_bEnableOptimizer

Detailed Description

Bytecode implementation of the Math Parser.

The bytecode contains the formula converted to revers polish notation stored in a continious memory area. Associated with this data are operator codes, variable pointers, constant values and function pointers. Those are necessary in order to calculate the result. All those data items will be casted to the underlying datatype of the bytecode.

Author: (C) 2004-2013 Ingo Berg

Definition at line 86 of file qmuparserbytecode.h.

Member Typedef Documentation

◆ rpn_type

typedef QVector<SToken> qmu::QmuParserByteCode::rpn_type

private

Token vector for storing the RPN.

Definition at line 113 of file qmuparserbytecode.h.

◆ token_type

typedef QmuParserToken<qreal, string_type> qmu::QmuParserByteCode::token_type

private

Token type for internal use only.

Definition at line 110 of file qmuparserbytecode.h.

Constructor & Destructor Documentation

◆ QmuParserByteCode() [1/2]

qmu::QmuParserByteCode::QmuParserByteCode ( )

Bytecode default constructor.

Definition at line 40 of file qmuparserbytecode.cpp.

References m_vRPN.

◆ QmuParserByteCode() [2/2]

qmu::QmuParserByteCode::QmuParserByteCode ( const QmuParserByteCode & a_ByteCode )

Copy constructor.

Implemented in Terms of Assign(const QParserByteCode &a_ByteCode)

Definition at line 52 of file qmuparserbytecode.cpp.

References Assign().

Member Function Documentation

◆ AddAssignOp()

void qmu::QmuParserByteCode::AddAssignOp ( qreal * a_pVar )

Add an assignement operator.

Operator entries in byte code consist of:

cmASSIGN code
the pointer of the destination variable

See also: ParserToken::ECmdCode

Definition at line 398 of file qmuparserbytecode.cpp.

References qmu::cmASSIGN, qmu::SToken::Cmd, m_iStackPos, m_vRPN, and qmu::SToken::Oprt.

Referenced by qmu::QmuParserBase::ApplyBinOprt().

◆ AddBulkFun()

void qmu::QmuParserByteCode::AddBulkFun	(	generic_fun_type	a_pFun,
		int	a_iArgc
	)

Add a bulk function to bytecode.

Parameters

a_iArgc	Number of arguments, negative numbers indicate multiarg functions.
a_pFun	Pointer to function callback.

Definition at line 442 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, qmu::cmFUNC_BULK, qmu::SToken::Fun, m_iMaxStackSize, m_iStackPos, and m_vRPN.

Referenced by qmu::QmuParserBase::ApplyFunc().

◆ AddFun()

void qmu::QmuParserByteCode::AddFun	(	generic_fun_type	a_pFun,
		int	a_iArgc
	)

Add function to bytecode.

Parameters

a_iArgc	Number of arguments, negative numbers indicate multiarg functions.
a_pFun	Pointer to function callback.

Definition at line 415 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, qmu::cmFUNC, qmu::SToken::Fun, m_iMaxStackSize, m_iStackPos, and m_vRPN.

Referenced by qmu::QmuParserBase::ApplyFunc().

◆ AddIfElse()

QT_WARNING_POP void qmu::QmuParserByteCode::AddIfElse ( ECmdCode a_Oprt )

Definition at line 379 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, and m_vRPN.

Referenced by qmu::QmuParserBase::ApplyIfElse().

◆ AddOp()

QT_WARNING_PUSH void qmu::QmuParserByteCode::AddOp ( ECmdCode a_Oprt )

Add an operator identifier to bytecode.

Operator entries in byte code consist of:

value array position of the result
the operator code according to ParserToken::ECmdCode

See also: ParserToken::ECmdCode

Definition at line 228 of file qmuparserbytecode.cpp.

References qmu::cmADD, qmu::SToken::Cmd, qmu::cmDIV, qmu::cmMUL, qmu::cmPOW, qmu::cmSUB, qmu::cmVAL, qmu::cmVAR, qmu::cmVARMUL, qmu::cmVARPOW2, qmu::cmVARPOW3, and qmu::cmVARPOW4.

Referenced by qmu::QmuParserBase::ApplyBinOprt().

◆ AddStrFun()

void qmu::QmuParserByteCode::AddStrFun	(	generic_fun_type	a_pFun,
		int	a_iArgc,
		int	a_iIdx
	)

Add Strung function entry to the parser bytecode.

Exceptions

nothrow A string function entry consists of the stack position of the return value, followed by a cmSTRFUNC code, the function pointer and an index into the string buffer maintained by the parser.

Definition at line 462 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, qmu::cmFUNC_STR, qmu::SToken::Fun, m_iMaxStackSize, m_iStackPos, and m_vRPN.

Referenced by qmu::QmuParserBase::ApplyStrFunc().

◆ AddVal()

void qmu::QmuParserByteCode::AddVal ( qreal a_fVal )

Add a Variable pointer to bytecode.

Value entries in byte code consist of:

value array position of the value
the operator code according to ParserToken::cmVAL
the value stored in #mc_iSizeVal number of bytecode entries.

Parameters

a_fVal Value to be added.

Exceptions

nothrow

Definition at line 127 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, qmu::cmVAL, m_iMaxStackSize, m_iStackPos, m_vRPN, and qmu::SToken::Val.

◆ AddVar()

void qmu::QmuParserByteCode::AddVar ( qreal * a_pVar )

Add a Variable pointer to bytecode.

Parameters

a_pVar Pointer to be added.

Exceptions

nothrow

Definition at line 99 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, qmu::cmVAR, m_iMaxStackSize, m_iStackPos, m_vRPN, and qmu::SToken::Val.

◆ AsciiDump()

void qmu::QmuParserByteCode::AsciiDump ( )

Dump bytecode (for debugging only!).

Definition at line 547 of file qmuparserbytecode.cpp.

References qmu::cmADD, qmu::cmARG_SEP, qmu::cmASSIGN, qmu::cmBC, qmu::cmBO, qmu::cmDIV, qmu::cmELSE, qmu::cmEND, qmu::cmENDIF, qmu::cmEQ, qmu::cmFUNC, qmu::cmFUNC_BULK, qmu::cmFUNC_STR, qmu::cmGE, qmu::cmGT, qmu::cmIF, qmu::cmLAND, qmu::cmLE, qmu::cmLOR, qmu::cmLT, qmu::cmMUL, qmu::cmNEQ, qmu::cmOPRT_BIN, qmu::cmOPRT_INFIX, qmu::cmOPRT_POSTFIX, qmu::cmPOW, qmu::cmPOW2, qmu::cmSTRING, qmu::cmSUB, qmu::cmUNKNOWN, qmu::cmVAL, qmu::cmVAR, qmu::cmVARMUL, qmu::cmVARPOW2, qmu::cmVARPOW3, qmu::cmVARPOW4, and m_vRPN.

◆ Assign()

void qmu::QmuParserByteCode::Assign ( const QmuParserByteCode & a_ByteCode )

Copy state of another object to this.

Exceptions

nowthrow

Definition at line 80 of file qmuparserbytecode.cpp.

References m_bEnableOptimizer, m_iMaxStackSize, m_iStackPos, and m_vRPN.

Referenced by operator=(), and QmuParserByteCode().

◆ clear()

void qmu::QmuParserByteCode::clear ( )

Delete the bytecode.

Exceptions

nothrow The name of this function is a violation of my own coding guidelines but this way it's more in line with the STL functions thus more intuitive.

Definition at line 536 of file qmuparserbytecode.cpp.

References m_iMaxStackSize, m_iStackPos, and m_vRPN.

Referenced by qmu::QmuParserBase::ReInit().

◆ ConstantFolding()

void qmu::QmuParserByteCode::ConstantFolding ( ECmdCode a_Oprt )

private

Definition at line 142 of file qmuparserbytecode.cpp.

References qmu::cmADD, qmu::cmDIV, qmu::cmEQ, qmu::cmGE, qmu::cmGT, qmu::cmLAND, qmu::cmLE, qmu::cmLOR, qmu::cmLT, qmu::cmMUL, qmu::cmNEQ, qmu::cmPOW, qmu::cmSUB, qmu::ecDIV_BY_ZERO, m_vRPN, and QmuFuzzyComparePossibleNulls().

◆ EnableOptimizer()

void qmu::QmuParserByteCode::EnableOptimizer ( bool bStat )

inline

Definition at line 130 of file qmuparserbytecode.h.

◆ Finalize()

void qmu::QmuParserByteCode::Finalize ( )

Add end marker to bytecode.

Exceptions

nothrow

Definition at line 482 of file qmuparserbytecode.cpp.

References qmu::SToken::Cmd, qmu::cmELSE, qmu::cmEND, qmu::cmENDIF, qmu::cmIF, and m_vRPN.

◆ GetBase()

const SToken * qmu::QmuParserByteCode::GetBase ( ) const

Definition at line 515 of file qmuparserbytecode.cpp.

References qmu::ecINTERNAL_ERROR, and m_vRPN.

Referenced by qmu::QmuParserBase::ParseCmdCodeBulk().

◆ GetMaxStackSize()

int qmu::QmuParserByteCode::GetMaxStackSize ( ) const

inline

Definition at line 136 of file qmuparserbytecode.h.

◆ GetSize()

int qmu::QmuParserByteCode::GetSize ( ) const

inline

Returns the number of entries in the bytecode.

Definition at line 146 of file qmuparserbytecode.h.

◆ operator=()

QmuParserByteCode & qmu::QmuParserByteCode::operator= ( const QmuParserByteCode & a_ByteCode )

Assignment operator.

Implemented in Terms of Assign(const QParserByteCode &a_ByteCode)

Definition at line 65 of file qmuparserbytecode.cpp.

References Assign().

Member Data Documentation

◆ m_bEnableOptimizer

bool qmu::QmuParserByteCode::m_bEnableOptimizer

private

Definition at line 124 of file qmuparserbytecode.h.

Referenced by Assign().

◆ m_iMaxStackSize

unsigned qmu::QmuParserByteCode::m_iMaxStackSize

private

Maximum size needed for the stack.

Definition at line 119 of file qmuparserbytecode.h.

Referenced by AddBulkFun(), AddFun(), AddStrFun(), AddVal(), AddVar(), Assign(), and clear().

◆ m_iStackPos

unsigned qmu::QmuParserByteCode::m_iStackPos

private

Position in the Calculation array.

Definition at line 116 of file qmuparserbytecode.h.

Referenced by AddAssignOp(), AddBulkFun(), AddFun(), AddStrFun(), AddVal(), AddVar(), Assign(), and clear().

◆ m_vRPN

rpn_type qmu::QmuParserByteCode::m_vRPN

private

The actual rpn storage.

Definition at line 122 of file qmuparserbytecode.h.

Referenced by AddAssignOp(), AddBulkFun(), AddFun(), AddIfElse(), AddStrFun(), AddVal(), AddVar(), AsciiDump(), Assign(), clear(), ConstantFolding(), Finalize(), GetBase(), and QmuParserByteCode().

The documentation for this class was generated from the following files:

src/libs/qmuparser/qmuparserbytecode.h
src/libs/qmuparser/qmuparserbytecode.cpp

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ rpn_type

◆ token_type

Constructor & Destructor Documentation

◆ QmuParserByteCode() [1/2]

◆ QmuParserByteCode() [2/2]

Member Function Documentation

◆ AddAssignOp()

◆ AddBulkFun()

◆ AddFun()

◆ AddIfElse()

◆ AddOp()

◆ AddStrFun()

◆ AddVal()

◆ AddVar()

◆ AsciiDump()

◆ Assign()

◆ clear()

◆ ConstantFolding()

◆ EnableOptimizer()

◆ Finalize()

◆ GetBase()

◆ GetMaxStackSize()

◆ GetSize()

◆ operator=()

Member Data Documentation

◆ m_bEnableOptimizer

◆ m_iMaxStackSize

◆ m_iStackPos

◆ m_vRPN