gridripper::math::expr::Evaluator Class Reference

Expression evaluator. More...

#include <Evaluator.h>

List of all members.

Static Public Member Functions
static Function *	createFunction (const string &expr, const string &varname, const tvector< StkOp * > &stkops=*(const tvector< StkOp * > *) 0, const tvector< Function * > &depvars=*(const tvector< Function * > *) 0) throw (IllegalArgumentException&)
	Creates a function from the specified string.
static StkConst *	addConst (const string &def, tvector< StkOp * > stkops) throw (IllegalArgumentException&)
	Creates a constant and adds it to the list.
static void	addConsts (const string &defs, tvector< StkOp * > &stkops) throw (IllegalArgumentException&)
	Creates constants from the definitions in the specified string.
static int	findStkOp (const tvector< StkOp * > &stkops, const string &name)
	Finds the stack operation with the specified name in the list.
static Function *	addVar (const string &def, const string &varname, const tvector< StkOp * > &stkops, tvector< Function * > &depvars) throw (IllegalArgumentException&)
	Creates a dependent variable and adds it to the list.
static void	addVars (const string &defs, const string &varname, tvector< StkOp * > &stkops, tvector< Function * > &depvars) throw (IllegalArgumentException&)
	Creates dependent variables from the definitions in the specified string.
static void	addConstsAndVars (const string &defs, const string &varname, tvector< StkOp * > &stkops, tvector< Function * > &depvars) throw (IllegalArgumentException&)
	Creates constants and dependent variables from the definitions in the specified string.
static int	findFunction (const tvector< Function * > &funcs, const string &name)
	Finds the function with the specified name in the list.
static GReal_t	eval (const string &expr, const tvector< StkOp * > &stkops=*(const tvector< StkOp * > *) 0) throw (IllegalArgumentException&)
	Evaluates the specified expression.
Classes
class	Function
	User defined function. More...

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Detailed Description

Expression evaluator.

Version:

03/06/2009

Since:

GridRipper 11/16/2008

Author:

Peter Csizmadia

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Member Function Documentation

static Function* gridripper::math::expr::Evaluator::createFunction	(	const string &	expr,
		const string &	varname,
		const tvector< StkOp * > &	stkops = *(const tvector< StkOp * > *) 0,
		const tvector< Function * > &	depvars = *(const tvector< Function * > *) 0
	)			throw (IllegalArgumentException&) [static]

Creates a function from the specified string.

Parameters:

	expr	the expression
	varname	name of the independent variable
	stkops	additional constants and variables
	depvars	additional dependent variables

static StkConst* gridripper::math::expr::Evaluator::addConst	(	const string &	def,
		tvector< StkOp * >	stkops
	)			throw (IllegalArgumentException&) [static]

Creates a constant and adds it to the list.

Parameters:

	def	the variable definition
	stkops	list of constants and other stack operations

Returns:

the new dependent variable

static void gridripper::math::expr::Evaluator::addConsts	(	const string &	defs,
		tvector< StkOp * > &	stkops
	)			throw (IllegalArgumentException&) [static]

Creates constants from the definitions in the specified string.

Each definition must end with a semicolon.

Parameters:

	stkops	list of constants and other stack operations
	defs	the variable definitions

static int gridripper::math::expr::Evaluator::findStkOp	(	const tvector< StkOp * > &	stkops,
		const string &	name
	)			[static]

Finds the stack operation with the specified name in the list.

Parameters:

	stkops	list of stack operations
	name	name of stack operation to find

Returns:

the index if found, -1 otherwise

static Function* gridripper::math::expr::Evaluator::addVar	(	const string &	def,
		const string &	varname,
		const tvector< StkOp * > &	stkops,
		tvector< Function * > &	depvars
	)			throw (IllegalArgumentException&) [static]

Creates a dependent variable and adds it to the list.

Parameters:

	def	the variable definition
	varname	name of the independent variable
	stkops	list of constants and other stack operations
	depvars	list of dependent variables

Returns:

the new dependent variable

static void gridripper::math::expr::Evaluator::addVars	(	const string &	defs,
		const string &	varname,
		tvector< StkOp * > &	stkops,
		tvector< Function * > &	depvars
	)			throw (IllegalArgumentException&) [static]

Creates dependent variables from the definitions in the specified string.

Each definition must end with a semicolon.

Parameters:

	defs	the variable definitions
	varname	name of the independent variable
	stkops	list of constants and other stack operations
	depvars	list of dependent variables

static void gridripper::math::expr::Evaluator::addConstsAndVars	(	const string &	defs,
		const string &	varname,
		tvector< StkOp * > &	stkops,
		tvector< Function * > &	depvars
	)			throw (IllegalArgumentException&) [static]

Creates constants and dependent variables from the definitions in the specified string.

Each definition must end with a semicolon.

Parameters:

	defs	the variable definitions
	varname	name of the independent variable
	stkops	list of constants and other stack operations
	depvars	list of dependent variables

static int gridripper::math::expr::Evaluator::findFunction	(	const tvector< Function * > &	funcs,
		const string &	name
	)			[static]

Finds the function with the specified name in the list.

Parameters:

	funcs	list of functions
	name	name of the function to find

Returns:

the index if found, -1 otherwise

static GReal_t gridripper::math::expr::Evaluator::eval	(	const string &	expr,
		const tvector< StkOp * > &	stkops = *(const tvector< StkOp * > *) 0
	)			throw (IllegalArgumentException&) [static]

Evaluates the specified expression.

Parameters:

	expr	the expression
	stkops	list of constants and other stack operations

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

• gridripper/math/expr/Evaluator.h