#include <SlValueParser.h>

Public Member Functions
	SlValueParser (int width, int height)

	SlValueParser ()

	~SlValueParser ()

SlValueParser &	operator= (const SlValueParser &rhs)

	SlValueParser (const SlValueParser &toCopy)

void	doubleFromString (const std::string &value, double &i)

void	parseFormula (const std::vector< std::string > &stringValues, unsigned int &i, double &value)

void	setDimensions (const int &width, const int &height)

void	stringsToDoubles (const std::vector< std::string > &stringValues, double *values, unsigned int length)

template<typename T >
void	stringsToNumbers (const std::vector< std::string > &stringValues, T *array, unsigned int length)

bool	stringsToRenderOptions (const std::vector< std::string > &stringValues, int &options)

int	screenWidth ()

int	screenHeight ()

Private Member Functions
std::string	assembleFormula (const std::vector< std::string > &stringValues, unsigned int &i)

double	calculateFormula (std::queue< SlFormulaItem > &outputQueue)

SlFormulaItem	getNextItem (std::string &formula)

std::queue< SlFormulaItem >	shuntFormula (std::string &formula)

Private Attributes
int	screen_width_ = 0

int	screen_height_ = 0

Detailed Description

Translate string input from configuration files to int output.

Constructor & Destructor Documentation

SlValueParser::SlValueParser	(	int	width,
		int	height
	)

screen_width_ and screen_height_ are set in the constructor.

SlValueParser::SlValueParser ( )

inline

Default constructor

SlValueParser::~SlValueParser ( )

inline

Default destructor

SlValueParser::SlValueParser ( const SlValueParser & toCopy )

Copy constructor.

Member Function Documentation

std::string SlValueParser::assembleFormula	(	const std::vector< std::string > &	stringValues,
		unsigned int &	i
	)

private

Generates the formula string from stringValues.

Exceptions

std::invalid_argument if the end of the formula can't be found.

< already determined position 0 is '"'

< Remove trailing '"'

< This is where stringsToInts will continue

double SlValueParser::calculateFormula ( std::queue< SlFormulaItem > & outputQueue )

private

Uses the outputQueue from shuntFormula() to calculate the result of the equation.

Exceptions

std::runtime_error if the items in the provided queue do not match the expected Reverse Polish notation or if an unknown operator is encountered.

< number

< need two numbers to use operator

void SlValueParser::doubleFromString	(	const std::string &	value,
		double &	i
	)

Returns the double value for a string. Understands SCREEN_WIDTH and SCREEN_HEIGHT.

Exceptions

std::runtime_error if the string can't be converted to double.

< account for unary -

SlFormulaItem SlValueParser::getNextItem ( std::string & formula )

private

Extracts the next item from the given string, and cuts the corresponding part from the input string.

SlValueParser & SlValueParser::operator= ( const SlValueParser & rhs )

Assignment.

void SlValueParser::parseFormula	(	const std::vector< std::string > &	stringValues,
		unsigned int &	i,
		double &	value
	)

Calculates the results of a formula (only + and - implemented).

Exceptions

std::invalid_argument if the formula can't be calculated (unknown operator).

int SlValueParser::screenHeight ( )

inline

Window height.

int SlValueParser::screenWidth ( )

inline

Window width.

void SlValueParser::setDimensions	(	const int &	width,
		const int &	height
	)

Sets the values used for keywords SCREEN_WIDTH, SCREEN_HEIGHT.

std::queue< SlFormulaItem > SlValueParser::shuntFormula ( std::string & formula )

private

Parses equation from assembleFormula() in infix notation and sorts it into Reverse Polish notation.

< Check for leading unary -.

< Leading unary - (or plus)

< Should be '(' on top, discard.

void SlValueParser::stringsToDoubles	(	const std::vector< std::string > &	stringValues,
		double *	values,
		unsigned int	length
	)

Takes a vector of strings, converts the strings to ints and returns them as an array.

Exceptions

std::invalid_argument if the size of stringValues is less than length, i.e. to few parameters given.

Skip trailing whitespace at end of line otherwise causes exception.

template<typename T >

void SlValueParser::stringsToNumbers	(	const std::vector< std::string > &	stringValues,
		T *	array,
		unsigned int	length
	)

Takes a vector of strings, converts the strings to type T (floating point or integer types) and returns them as an array.

bool SlValueParser::stringsToRenderOptions	(	const std::vector< std::string > &	stringValues,
		int &	options
	)

Translates strings into SlRenderOptions.

Member Data Documentation

int SlValueParser::screen_height_ = 0

private

Screen dimensions are needed to define a texture as having the dimensions of the window.

int SlValueParser::screen_width_ = 0

private

Screen dimensions are needed to define a texture as having the dimensions of the window.

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

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation