Bytecode implementation of the Math Parser. More...

#include <muParserBytecode.h>

Collaboration diagram for mu::ParserByteCode:

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

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

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

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

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

void	AddVal (value_type 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 (value_type *a_pVar)
	Add an assignement operator. More...

void	AddFun (generic_fun_type a_pFun, int a_iArgc, bool optimizeAway)
	Add a function to the 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	ChangeVar (value_type a_pOldVar, value_type a_pNewVar, bool isVect)
	Changes all old variable pointers to the new addresses. Will be used to compensate for different local variable adresses in different scopes. More...

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

std::size_t	GetMaxStackSize () const

std::size_t	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 ParserToken< value_type, string_type >	token_type
	Token type for internal use only. More...

typedef std::vector< 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...

std::size_t	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) 2004-2012 Ingo Berg

Definition at line 89 of file muParserBytecode.h.

Member Typedef Documentation

◆ rpn_type

typedef std::vector<SToken> mu::ParserByteCode::rpn_type

private

Token vector for storing the RPN.

Definition at line 97 of file muParserBytecode.h.

◆ token_type

typedef ParserToken<value_type, string_type> mu::ParserByteCode::token_type

private

Token type for internal use only.

Definition at line 94 of file muParserBytecode.h.

Constructor & Destructor Documentation

◆ ParserByteCode() [1/2]

mu::ParserByteCode::ParserByteCode ( )

Bytecode default constructor.

Definition at line 46 of file muParserBytecode.cpp.

References m_vRPN.

◆ ParserByteCode() [2/2]

mu::ParserByteCode::ParserByteCode ( const ParserByteCode & a_ByteCode )

Copy constructor.

Implemented in Terms of Assign(const ParserByteCode &a_ByteCode)

Definition at line 60 of file muParserBytecode.cpp.

References Assign().

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Member Function Documentation

◆ AddAssignOp()

void mu::ParserByteCode::AddAssignOp ( value_type * 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 394 of file muParserBytecode.cpp.

References mu::cmASSIGN, mu::SToken::Cmd, mu::SToken::isVect, m_iStackPos, m_vRPN, mu::SToken::ptr, and mu::SToken::Val.

Referenced by mu::ParserBase::ApplyBinOprt().

◆ AddBulkFun()

void mu::ParserByteCode::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 582 of file muParserBytecode.cpp.

References mu::SToken::argc, mu::SToken::Cmd, mu::cmFUNC_BULK, mu::SToken::Fun, m_iMaxStackSize, m_iStackPos, m_vRPN, max, and mu::SToken::ptr.

Referenced by mu::ParserBase::ApplyFunc().

◆ AddFun()

void mu::ParserByteCode::AddFun	(	generic_fun_type	a_pFun,
		int	a_iArgc,
		bool	optimizeAway
	)

Add a function to the bytecode.

Parameters

a_pFun	generic_fun_type
a_iArgc	int
optimizeAway	bool

Returns: void

Definition at line 415 of file muParserBytecode.cpp.

References date::abs(), AddVal(), mu::SToken::argc, mu::SToken::Cmd, mu::cmFUNC, mu::cmVAL, mu::ecINTERNAL_ERROR, mu::SToken::Fun, m_bEnableOptimizer, m_iMaxStackSize, m_iStackPos, m_vRPN, max, and mu::SToken::ptr.

Referenced by mu::ParserBase::ApplyFunc().

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◆ AddIfElse()

void mu::ParserByteCode::AddIfElse ( ECmdCode a_Oprt )

Definition at line 376 of file muParserBytecode.cpp.

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

Referenced by mu::ParserBase::ApplyIfElse(), and mu::ParserBase::CreateRPN().

◆ AddOp()

void mu::ParserByteCode::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 229 of file muParserBytecode.cpp.

References mu::cmADD, mu::SToken::Cmd, mu::cmDIV, mu::cmMUL, mu::cmPOW, mu::cmSUB, mu::cmVAL, mu::cmVAR, mu::cmVARMUL, mu::cmVARPOW2, mu::cmVARPOW3, mu::cmVARPOW4, mu::cmVARPOWN, ConstantFolding(), intCast(), m_bEnableOptimizer, m_iStackPos, and m_vRPN.

Referenced by mu::ParserBase::ApplyBinOprt().

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◆ AddStrFun()

void mu::ParserByteCode::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 602 of file muParserBytecode.cpp.

References mu::SToken::argc, mu::SToken::Cmd, mu::cmFUNC_STR, mu::SToken::Fun, mu::SToken::idx, m_iMaxStackSize, m_iStackPos, m_vRPN, max, and mu::SToken::ptr.

Referenced by mu::ParserBase::ApplyStrFunc().