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

Expression evaluator. More...

List of all members.

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

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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	(	String	expr,
		String	varname
	)			[inline, static]

Creates a function from the specified string.

Parameters:

	expr	the expression
	varname	name of the independent variable

static Function gridripper::math::expr::Evaluator::createFunction	(	String	expr,
		String	varname,
		List< StkOp >	stkops,
		List< Function >	depvars
	)			[inline, static]

Creates a function from the specified string.

Parameters:

	expr	the expression
	varname	name of the independent variable
	stkops	list of constants and other stack operations
	depvars	additional dependent variables

static Function gridripper::math::expr::Evaluator::addVar	(	String	expr,
		String	varname,
		List< Function >	depvars
	)			[inline, static]

Creates a dependent variable and adds it to the list.

Parameters:

	expr	the variable definition
	varname	name of the independent variable
	depvars	list of dependent variables

Returns:

the new dependent variable

static StkConst gridripper::math::expr::Evaluator::addConst	(	String	def,
		List< StkOp >	stkops
	)			[inline, 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 int gridripper::math::expr::Evaluator::findStkOp	(	List< StkOp >	stkops,
		String	name
	)			[inline, 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 void gridripper::math::expr::Evaluator::addConsts	(	String	defs,
		List< StkOp >	stkops
	)			[inline, static]

Creates constants from the definitions in the specified string.

Each definition must end with a semicolon.

Parameters:

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

Returns:

the new dependent variable

static Function gridripper::math::expr::Evaluator::addVar	(	String	def,
		String	varname,
		List< StkOp >	stkops,
		List< Function >	depvars
	)			[inline, 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 int gridripper::math::expr::Evaluator::findFunction	(	List< Function >	funcs,
		String	name
	)			[inline, 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 void gridripper::math::expr::Evaluator::addVars	(	String	defs,
		String	varname,
		List< StkOp >	stkops,
		List< Function >	depvars
	)			[inline, 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	additional constants and variables
	depvars	list of dependent variables

static void gridripper::math::expr::Evaluator::addConstsAndVars	(	String	defs,
		String	varname,
		List< StkOp >	stkops,
		List< Function >	depvars
	)			[inline, 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	additional constants and variables
	stkops	list of constants and other stack operations
	depvars	list of dependent variables

static double gridripper::math::expr::Evaluator::eval	(	String	expr,
		List< StkOp >	stkops
	)			throws IllegalArgumentException [inline, 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.java