preprocessor Class Reference

Description

Preprocessing class which takes infix mathematical notation with all sorts of maths shortcuts and transforms it into a string which is properly formatted in prefix notation.

The Parser class then uses this result to turn the string into an Ex expression tree.

#include <PreProcessor.hh>

Classes
class	accu_t

Public Types
enum	order_labels {   order_factorial =0 , order_pow , order_frac , order_prod ,   order_wedge , order_minus , order_plus , order_dot ,   order_equals , order_unequals , order_less_than , order_greater_than ,   order_conditions , order_arrow , order_set_option , order_colon ,   order_comma , order_tilde }

Public Member Functions
	preprocessor ()
void	erase ()
void	strip_outer_brackets () const

Static Public Attributes
static const char32_t	orders []
static const char32_t *const	order_names []

Private Member Functions
void	parse_ (const std::u32string &)
void	parse_internal_ ()
bool	unwind_ (unsigned int tolevel, unsigned int bracketgoal=0, bool usebracket=true) const
char32_t	get_token_ (char32_t prev_token)
void	show_and_throw_ (const std::string &str) const
void	bracket_strings_ (char32_t cb, std::u32string &obrack, std::u32string &cbrack) const
bool	is_infix_operator_ (char32_t c) const
bool	is_link_ (char32_t c) const
unsigned int	is_opening_bracket_ (char32_t c) const
unsigned int	is_closing_bracket_ (char32_t c) const
unsigned int	is_bracket_ (char32_t c) const
bool	is_already_bracketed_ (const std::u32string &str) const
bool	is_digits_ (const std::u32string &str) const
unsigned int	current_bracket_ (bool deep=false) const
void	print_stack () const
bool	default_is_product_ () const

Private Attributes
bool	verbatim_
bool	next_is_product_
bool	eat_initial_whitespace_
unsigned int	cur_pos
std::u32string	cur_str
accu_t	cur
std::vector< accu_t >	accus

Static Private Attributes
static const char32_t	open_brackets [] = { '{', '(', '[' }
static const char32_t	close_brackets [] = { '}', ')', ']' }

Friends
std::istream &	operator>> (std::istream &, preprocessor &)
std::ostream &	operator<< (std::ostream &, const preprocessor &)

Member Enumeration Documentation

order_labels

enum preprocessor::order_labels

Enumerator
order_factorial
order_pow
order_frac
order_prod
order_wedge
order_minus
order_plus
order_dot
order_equals
order_unequals
order_less_than
order_greater_than
order_conditions
order_arrow
order_set_option
order_colon
order_comma
order_tilde

Constructor & Destructor Documentation

preprocessor()

preprocessor::preprocessor

(

)

Member Function Documentation

bracket_strings_()

void preprocessor::bracket_strings_ ( char32_t  cb, std::u32string &  obrack, std::u32string &  cbrack  ) const

private

current_bracket_()

unsigned int preprocessor::current_bracket_ ( bool  deep = false ) const

private

default_is_product_()

bool preprocessor::default_is_product_ ( ) const

private

erase()

void preprocessor::erase

(

)

get_token_()

char32_t preprocessor::get_token_ ( char32_t  prev_token )

private

is_already_bracketed_()

bool preprocessor::is_already_bracketed_ ( const std::u32string &  str ) const

private

is_bracket_()

unsigned int preprocessor::is_bracket_ ( char32_t  c ) const

private

is_closing_bracket_()

unsigned int preprocessor::is_closing_bracket_ ( char32_t  c ) const

private

is_digits_()

bool preprocessor::is_digits_ ( const std::u32string &  str ) const

private

is_infix_operator_()

bool preprocessor::is_infix_operator_ ( char32_t  c ) const

private

is_link_()

bool preprocessor::is_link_ ( char32_t  c ) const

private

is_opening_bracket_()

unsigned int preprocessor::is_opening_bracket_ ( char32_t  c ) const

private

parse_()

void preprocessor::parse_ ( const std::u32string &  str )

private

parse_internal_()

void preprocessor::parse_internal_ ( )

private

print_stack()

void preprocessor::print_stack ( ) const

private

show_and_throw_()

void preprocessor::show_and_throw_ ( const std::string &  str ) const

private

strip_outer_brackets()

void preprocessor::strip_outer_brackets

(

)

const

unwind_()

bool preprocessor::unwind_ ( unsigned int  tolevel, unsigned int  bracketgoal = 0, bool  usebracket = true  ) const

private

Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  , const preprocessor &    )

friend

operator>>

std::istream& operator>> ( std::istream &  , preprocessor &    )

friend

Member Data Documentation

accus

std::vector<accu_t> preprocessor::accus

mutableprivate

close_brackets

const char32_t preprocessor::close_brackets = { '}', ')', ']' }

staticprivate

cur

accu_t preprocessor::cur

mutableprivate

cur_pos

unsigned int preprocessor::cur_pos

private

cur_str

std::u32string preprocessor::cur_str

private

eat_initial_whitespace_

bool preprocessor::eat_initial_whitespace_

private

next_is_product_

bool preprocessor::next_is_product_

private

open_brackets

const char32_t preprocessor::open_brackets = { '{', '(', '[' }

staticprivate

order_names

const char32_t *const preprocessor::order_names

static

Initial value:

= { U"\\factorial",
                                                                         U"\\pow", U"\\frac", U"\\prod", U"\\wedge",
                                                                         U"\\sub", U"\\sum", U"\\sequence",
                                                                         U"\\equals", U"\\unequals", U"\\less",
                                                                         U"\\greater", U"\\conditional",
                                                                         U"\\arrow", U"\\setoption", U"\\declare",
                                                                         U"\\comma", U"\\tie", 0
}

orders

const char32_t preprocessor::orders

static

Initial value:

= { '!', tok_pow, '/', '*', tok_wedge,
                                                   '-', '+', tok_sequence, '=', tok_unequals,
                                                   '<', '>', '|', tok_arrow, tok_set_option,
                                                   tok_declare, ',', '~', 0
                                                    }

verbatim_

bool preprocessor::verbatim_

private

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

• core/PreProcessor.hh
• core/PreProcessor.cc