Aqua::Tokenizer Class Reference

Tool to evaluate math expressions. More...

#include <Tokenizer/Tokenizer.h>

Public Member Functions
	Tokenizer ()
	Constructor.
	~Tokenizer ()
	Destructor.
bool	registerVariable (const std::string name, float value)
	Register a variable.
void	clearVariables ()
	Clear/unregister all the registered variables.
bool	isVariable (const std::string name)
	Checks if a variable has been registered.
float	variable (const std::string name)
	Returns a variable value.
float	solve (const std::string eq)
	Solve a math expression.

Protected Member Functions
virtual void	defaultVariables ()
	Register the default variables.

Detailed Description

Tool to evaluate math expressions.

This tool is based in libmatheval, to learn more please visit the following web page:

http://www.gnu.org/software/libmatheval

Constructor & Destructor Documentation

Tokenizer()

Aqua::Tokenizer::Tokenizer

(

)

Constructor.

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~Tokenizer()

Aqua::Tokenizer::~Tokenizer

(

)

Destructor.

Member Function Documentation

clearVariables()

void Aqua::Tokenizer::clearVariables

(

)

Clear/unregister all the registered variables.

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defaultVariables()

void Aqua::Tokenizer::defaultVariables ( )

protectedvirtual

Register the default variables.

After the libmatheval implementation, variables like \( e \) or \( \pi \) are defined out of the box, but the function is retained just in case.

isVariable()

bool Aqua::Tokenizer::isVariable

(

const std::string

name

)

Checks if a variable has been registered.

Parameters

name	Name of the variable

Returns

true if already exist a variable with the given name, false otherwise.

registerVariable()

bool Aqua::Tokenizer::registerVariable	(	const std::string	name,
		float	value
	)

Register a variable.

In case that the variable already exist, it will be modified.

The registered variables can be used later in the expression to be evaluated.

Parameters

name	Name of the variable.
value	Value of the variable.

Returns

true if the variable already exists, false otherwise.

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solve()

float Aqua::Tokenizer::solve

(

const std::string

eq

)

Solve a math expression.

Parameters

eq	Math expression to solve.

Returns

Expression value, 0.0 if the evaluation failed (it will be reported by terminal).

variable()

float Aqua::Tokenizer::variable

(

const std::string

name

)

Returns a variable value.

Parameters

name	Name of the variable

Returns

The Value of the variable, or 0.0 if the variable cannot be found.

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

• /home/pepe/SPH/Code/aquagpusph/include/Tokenizer/Tokenizer.h
• /home/pepe/SPH/Code/aquagpusph/src/Tokenizer/Tokenizer.cpp