RE/flex scanner generator class, a variation of the classic "lex" tool to generate scanners. More...

#include <reflex.h>

Collaboration diagram for Reflex:

[legend]

Classes
struct	Code
	Line of code fragment in lex specifications. More...

struct	Library
	A library entry to describe regex library properties. More...

struct	Rule
	A regex pattern and action pair that forms a rule. More...

Public Types
typedef std::map< std::string, Library >	LibraryMap
	Dictionary of regex libraries. More...

typedef std::vector< Code >	Codes
	Collection of ordered lines of code. More...

typedef std::vector< Rule >	Rules
	Collection of ordered rules. More...

typedef std::vector< std::string >	Strings
	Collection of ordered strings. More...

typedef std::map< std::string, std::string >	StringMap
	Dictionary (std::string) More...

typedef std::map< std::string, const char * >	Dictionary
	Dictionary (const char*) More...

typedef size_t	Start
	Start condition state type. More...

typedef std::set< Start >	Starts
	Set of start conditions. More...

typedef std::map< Start, Codes >	CodesMap
	Map of start conditions to lines of code. More...

typedef std::map< Start, Rules >	RulesMap
	Map of start conditions to rules. More...

Public Member Functions
void	main (int argc, char **argv)
	Main program. More...

Protected Attributes
StringMap	options
	maps option name (from the options_table) to its option value More...

LibraryMap	libraries
	maps regex library name ("reflex", "boost", etc) to library info More...

Library *	library
	the regex library selected More...

Strings	conditions
	"INITIAL" start condition etc. defined with x name More...

Strings	patterns
	regex patterns for each start condition More...

Starts	inclusive
	inclusive start conditions More...

StringMap	definitions
	map of {name} to regex More...

RulesMap	rules
	<Start_i>regex_j action for Start i Rule j More...

Codes	section_top
	top{ user code %} in section 1 container More...

Codes	section_class
	class{ class code %} in section 1 container More...

Codes	section_init
	init{ init code %} in section 1 container More...

Codes	section_begin
	begin{ begin scanning code %} in section 1 container More...

Codes	section_1
	%{ user code %} in section 1 container More...

CodesMap	section_2
	lexer user code in section 2 container More...

Codes	section_3
	main user code in section 3 container More...

std::string	infile
	input file name More...

reflex::BufferedInput	in
	input lex spec More...

std::ostream *	out
	output stream More...

std::string	line
	current line read from input More...

size_t	lineno
	current line number at input More...

size_t	linelen
	current line length More...

bool	color_term
	terminal supports colors More...

Private Member Functions
void	init (int argc, char **argv)
	Reflex initialization. More...

void	version ()
	Display version information and exit. More...

void	help (const char message=NULL, const char arg=NULL)
	Display help information with an optional diagnostic message and exit. More...

void	set_library ()
	Set/reset regex library matcher. More...

void	parse ()
	Parse lex specification input. More...

void	parse_section_1 ()
	Parse section 1 of a lex specification. More...

void	parse_section_2 ()
	Parse section 2 of a lex specification. More...

void	parse_section_3 ()
	Parse section 3 of a lex specification. More...

void	include (const std::string &filename)
	Parse the specified %include file. More...

void	write ()
	Write lex.yy.cpp. More...

void	write_banner (const char *title)
	Write a banner in lex.yy.cpp. More...

void	write_prelude ()
	Write the prelude to lex.yy.cpp. More...

void	write_defines ()
	Write Flex-compatible #defines to lex.yy.cpp. More...

void	write_class ()
	Write the lexer class to lex.yy.cpp. More...

void	write_section_top ()
	Write %top code to lex.yy.cpp. More...

void	write_section_class ()
	Write %class code to lex.yy.cpp. More...

void	write_section_init ()
	Write %init code to lex.yy.cpp. More...

void	write_section_begin ()
	Write %begin code to lex.yy.cpp. More...

void	write_perf_report ()
	Write perf_report code to lex.yy.cpp. More...

void	write_section_1 ()
	Write section 1 user-defined code to lex.yy.cpp. More...

void	write_section_3 ()
	Write section 3 user-defined code to lex.yy.cpp. More...

void	write_code (const Codes &codes)
	Write lines of code to lex.yy.cpp annotated with line source info. More...

void	write_code (const Code &code)
	Write a line(s) of code to lex.yy.cpp annotated with line source info. More...

void	write_lexer ()
	Write lexer code and lex() method code. More...

void	write_main ()
	Write main() to lex.yy.cpp. More...

void	write_regex (const std::string *condition, const std::string &regex)
	Write regex string to lex.yy.cpp by escaping \ and ", prevent trigraphs, very long strings are represented by character arrays. More...

void	write_namespace_open ()
	Write namespace openings NAME {. More...

void	write_namespace_close ()
	Write namespace closing scope } // NAME. More...

void	write_namespace_scope ()
	Write namespace scope NAME :: More...

void	undot_namespace (std::string &s)
	Replace all . by :: in namespace name. More...

void	write_final ()
	Finalize and display usage report. More...

void	write_regexp_file ()
	Save file with regex patterns when option –regexp-file is specified. More...

void	write_header_file ()
	Save header file when option –header-file is specified. More...

bool	get_line ()
	Fetch next line from the input, return true if ok. More...

bool	skip_comment (size_t &pos)
	Advance pos over white space and comments, return true if ok. More...

bool	is (const char *s)
	Match case-insensitive string s while ignoring the rest of the line, return true if OK. More...

bool	ins (const char *s)
	Match case-insensitive string s at any indent while ignoring the rest of the line, return true if OK. More...

bool	br (size_t pos, const char *s=NULL)
	Match s then look for a '{' at the end of the line (skipping whitespace) and return true, false otherwise (pos is unchanged) More...

bool	as (size_t &pos, const char *s)
	Advance pos to match case-insensitive initial part of the string s followed by white space, return true if OK. More...

bool	ws (size_t &pos)
	Advance pos over whitespace, returns true if whitespace was found. More...

bool	eq (size_t &pos)
	Advance pos over '=' and whitespace when present, return true if OK. More...

bool	nl (size_t &pos)
	Advance pos to end of line while skipping whitespace, return true if end of line. More...

bool	is_code ()
	Check if current line starts a block of code or a comment. More...

bool	is_top_code ()
	Check if current line starts a block of top code. More...

bool	is_class_code ()
	Check if current line starts a block of class code. More...

bool	is_init_code ()
	Check if current line starts a block of init code. More...

bool	is_begin_code ()
	Check if current line starts a block of begin code. More...

std::string	get_name (size_t &pos)
	Advance pos over name (letters, digits, ., -, _ or any non-ASCII character > U+007F), return name. More...

std::string	get_option (size_t &pos)
	Advance pos over option name (letters, digits, +/hyphen/underscore), return name. More...

std::string	get_start (size_t &pos)
	Advance pos over start condition name (an ASCII C++ identifier or C++11 Unicode identifier), return name. More...

std::string	get_string (size_t &pos)
	Advance pos over quoted string, return string. More...

bool	get_pattern (size_t &pos, std::string &pattern, std::string &regex)
	Get pattern and its regex form converted to a format understood by the selected regex engine library. More...

std::string	get_namespace (size_t &pos)
	Advance pos over option name or namespace (letters, digits, ::, ., -, _ or any non-ASCII character > U+007F), return name. More...

std::string	get_code (size_t &pos)
	Get line(s) of code, %{ %}, %top, %class, %init, and %begin. More...

std::string	escape_bs (const std::string &s)
	Returns string with all \ replaced by \ to stringify file paths. More...

std::string	upper_name (const std::string &s)
	Returns string in upper case as a name, replacing non-alphanum by underscore. More...

std::string	param_args (const std::string &s)
	Extract a list of argument names from function parameters. More...

bool	get_starts (size_t &pos, Starts &starts)
	Add start conditions <start1,start2,...> or subtract them with <-start1,-start2,...> More...

void	abort (const char message, const char arg=NULL)
	Abort with an error message. More...

void	error (const char message, const char arg=NULL, size_t at_lineno=0)
	Report an error and exit. More...

void	warning (const char message, const char arg=NULL, size_t at_lineno=0)
	Report a warning. More...

const char *	SGR (const char *code)

Detailed Description

RE/flex scanner generator class, a variation of the classic "lex" tool to generate scanners.

More info TODO

The Lex specification file extension is .l, but also .lex, .ll, .l++, .lxx, and .lpp are in use.

Member Typedef Documentation

typedef std::vector<Code> Reflex::Codes

Collection of ordered lines of code.

typedef std::map<Start,Codes> Reflex::CodesMap

Map of start conditions to lines of code.

typedef std::map<std::string,const char*> Reflex::Dictionary

Dictionary (const char*)

typedef std::map<std::string,Library> Reflex::LibraryMap

Dictionary of regex libraries.

typedef std::vector<Rule> Reflex::Rules

Collection of ordered rules.

typedef std::map<Start,Rules> Reflex::RulesMap

Map of start conditions to rules.

typedef size_t Reflex::Start

Start condition state type.

typedef std::set<Start> Reflex::Starts

Set of start conditions.

typedef std::map<std::string,std::string> Reflex::StringMap

Dictionary (std::string)

typedef std::vector<std::string> Reflex::Strings

Collection of ordered strings.

Member Function Documentation

void Reflex::abort	(	const char *	message,
		const char *	arg = `NULL`
	)

private

Abort with an error message.

bool Reflex::as	(	size_t &	pos,
		const char *	s
	)

private

Advance pos to match case-insensitive initial part of the string s followed by white space, return true if OK.

bool Reflex::br	(	size_t	pos,
		const char *	s = `NULL`
	)

private

Match s then look for a '{' at the end of the line (skipping whitespace) and return true, false otherwise (pos is unchanged)

bool Reflex::eq ( size_t & pos )

private

Advance pos over '=' and whitespace when present, return true if OK.

void Reflex::error	(	const char *	message,
		const char *	arg = `NULL`,
		size_t	at_lineno = `0`
	)

private

Report an error and exit.

std::string Reflex::escape_bs ( const std::string & s )

private

Returns string with all \ replaced by \ to stringify file paths.

std::string Reflex::get_code ( size_t & pos )

private

Get line(s) of code, %{ %}, %top, %class, %init, and %begin.

bool Reflex::get_line ( )

private

Fetch next line from the input, return true if ok.

std::string Reflex::get_name ( size_t & pos )

private

Advance pos over name (letters, digits, ., -, _ or any non-ASCII character > U+007F), return name.

std::string Reflex::get_namespace ( size_t & pos )

private

Advance pos over option name or namespace (letters, digits, ::, ., -, _ or any non-ASCII character > U+007F), return name.

std::string Reflex::get_option ( size_t & pos )

private

Advance pos over option name (letters, digits, +/hyphen/underscore), return name.

bool Reflex::get_pattern	(	size_t &	pos,
		std::string &	pattern,
		std::string &	regex
	)

private

Get pattern and its regex form converted to a format understood by the selected regex engine library.

std::string Reflex::get_start ( size_t & pos )

private

Advance pos over start condition name (an ASCII C++ identifier or C++11 Unicode identifier), return name.

bool Reflex::get_starts	(	size_t &	pos,
		Starts &	starts
	)

private

Add start conditions <start1,start2,...> or subtract them with <-start1,-start2,...>

std::string Reflex::get_string ( size_t & pos )

private

Advance pos over quoted string, return string.

void Reflex::help	(	const char *	message = `NULL`,
		const char *	arg = `NULL`
	)

private

Display help information with an optional diagnostic message and exit.

void Reflex::include ( const std::string & filename )

private

Parse the specified %include file.

void Reflex::init	(	int	argc,
		char **	argv
	)

private

Reflex initialization.

bool Reflex::ins ( const char * s )

private

Match case-insensitive string s at any indent while ignoring the rest of the line, return true if OK.

bool Reflex::is ( const char * s )

private

Match case-insensitive string s while ignoring the rest of the line, return true if OK.

bool Reflex::is_begin_code ( )

private

Check if current line starts a block of begin code.

bool Reflex::is_class_code ( )

private

Check if current line starts a block of class code.

bool Reflex::is_code ( )

private

Check if current line starts a block of code or a comment.

bool Reflex::is_init_code ( )

private

Check if current line starts a block of init code.

bool Reflex::is_top_code ( )

private

Check if current line starts a block of top code.

void Reflex::main	(	int	argc,
		char **	argv
	)

Main program.

bool Reflex::nl ( size_t & pos )

private

Advance pos to end of line while skipping whitespace, return true if end of line.

std::string Reflex::param_args ( const std::string & s )

private

Extract a list of argument names from function parameters.

void Reflex::parse ( )

private

Parse lex specification input.

void Reflex::parse_section_1 ( )

private

Parse section 1 of a lex specification.

void Reflex::parse_section_2 ( )

private

Parse section 2 of a lex specification.

void Reflex::parse_section_3 ( )

private

Parse section 3 of a lex specification.

void Reflex::set_library ( )

private

Set/reset regex library matcher.

const char* Reflex::SGR ( const char * code )

inlineprivate

bool Reflex::skip_comment ( size_t & pos )

private

Advance pos over white space and comments, return true if ok.

void Reflex::undot_namespace ( std::string & s )

private

Replace all . by :: in namespace name.

std::string Reflex::upper_name ( const std::string & s )

private

Returns string in upper case as a name, replacing non-alphanum by underscore.

void Reflex::version ( )

private

Display version information and exit.

void Reflex::warning	(	const char *	message,
		const char *	arg = `NULL`,
		size_t	at_lineno = `0`
	)

private

Report a warning.

void Reflex::write ( )

private

Write lex.yy.cpp.

void Reflex::write_banner ( const char * title )

private

Write a banner in lex.yy.cpp.

void Reflex::write_class ( )

private

Write the lexer class to lex.yy.cpp.

void Reflex::write_code ( const Codes & codes )

private

Write lines of code to lex.yy.cpp annotated with line source info.

void Reflex::write_code ( const Code & code )

private

Write a line(s) of code to lex.yy.cpp annotated with line source info.

void Reflex::write_defines ( )

private

Write Flex-compatible #defines to lex.yy.cpp.

void Reflex::write_final ( )

private

Finalize and display usage report.

void Reflex::write_header_file ( )

private

Save header file when option –header-file is specified.

void Reflex::write_lexer ( )

private

Write lexer code and lex() method code.

void Reflex::write_main ( )

private

Write main() to lex.yy.cpp.

void Reflex::write_namespace_close ( )

private

Write namespace closing scope } // NAME.

void Reflex::write_namespace_open ( )

private

Write namespace openings NAME {.

void Reflex::write_namespace_scope ( )

private

Write namespace scope NAME ::

void Reflex::write_perf_report ( )

private

Write perf_report code to lex.yy.cpp.

void Reflex::write_prelude ( )

private

Write the prelude to lex.yy.cpp.

void Reflex::write_regex	(	const std::string *	condition,
		const std::string &	regex
	)

private

Write regex string to lex.yy.cpp by escaping \ and ", prevent trigraphs, very long strings are represented by character arrays.

void Reflex::write_regexp_file ( )

private

Save file with regex patterns when option –regexp-file is specified.

void Reflex::write_section_1 ( )

private

Write section 1 user-defined code to lex.yy.cpp.

void Reflex::write_section_3 ( )

private

Write section 3 user-defined code to lex.yy.cpp.

void Reflex::write_section_begin ( )

private

Write %begin code to lex.yy.cpp.

void Reflex::write_section_class ( )

private

Write %class code to lex.yy.cpp.

void Reflex::write_section_init ( )

private

Write %init code to lex.yy.cpp.

void Reflex::write_section_top ( )

private

Write %top code to lex.yy.cpp.

bool Reflex::ws ( size_t & pos )

private

Advance pos over whitespace, returns true if whitespace was found.

Member Data Documentation

bool Reflex::color_term

protected

terminal supports colors

Strings Reflex::conditions

protected

"INITIAL" start condition etc. defined with x name

StringMap Reflex::definitions

protected

map of {name} to regex

reflex::BufferedInput Reflex::in

protected

input lex spec

Starts Reflex::inclusive

protected

inclusive start conditions

std::string Reflex::infile

protected

input file name

LibraryMap Reflex::libraries

protected

maps regex library name ("reflex", "boost", etc) to library info

Library* Reflex::library

protected

the regex library selected

std::string Reflex::line

protected

current line read from input

size_t Reflex::linelen

protected

current line length

size_t Reflex::lineno

protected

current line number at input

StringMap Reflex::options

protected

maps option name (from the options_table) to its option value

std::ostream* Reflex::out

protected

output stream

Strings Reflex::patterns

protected

regex patterns for each start condition

RulesMap Reflex::rules

protected

<Start_i>regex_j action for Start i Rule j

Codes Reflex::section_1

protected

%{ user code %} in section 1 container

CodesMap Reflex::section_2

protected

lexer user code in section 2 container

Codes Reflex::section_3

protected

main user code in section 3 container

Codes Reflex::section_begin

protected

begin{ begin scanning code %} in section 1 container

Codes Reflex::section_class

protected

class{ class code %} in section 1 container

Codes Reflex::section_init

protected

init{ init code %} in section 1 container

Codes Reflex::section_top

protected

top{ user code %} in section 1 container

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

Classes

Public Types

Public Member Functions

Protected Attributes

Private Member Functions

Detailed Description

Member Typedef Documentation

Member Function Documentation

Member Data Documentation