SEAMS::Scanner Class Reference

#include <apr_scanner.h>

Inheritance diagram for SEAMS::Scanner:

Collaboration diagram for SEAMS::Scanner:

Public Member Functions
	Scanner (Aprepro &aprepro_yyarg, std::istream *in=nullptr, std::ostream *out=nullptr)
	~Scanner () override
bool	add_include_file (const std::string &filename, bool must_exist)
int	yywrap () override
void	yyerror (const char *s)
void	LexerOutput (const char *buf, int size) override
int	LexerInput (char *buf, int max_size) override
virtual Parser::token_type	lex (Parser::semantic_type *yylval)
char *	rescan (char *string)
char *	execute (char *string)
char *	import_handler (char *string)
char *	if_handler (double x)
char *	elseif_handler (double x)
char *	switch_handler (double x)
char *	case_handler (double x)
void	set_debug (bool b)
void	save_history_string ()
Public Member Functions inherited from SEAMSFlexLexer
	SEAMSFlexLexer (std::istream *arg_yyin=nullptr, std::ostream *arg_yyout=nullptr)
	~SEAMSFlexLexer () override
void	yy_switch_to_buffer (struct yy_buffer_state *new_buffer) override
struct yy_buffer_state *	yy_create_buffer (std::istream *file, int size) override
void	yy_delete_buffer (struct yy_buffer_state *b) override
void	yyrestart (std::istream *input_file) override
void	yypush_buffer_state (struct yy_buffer_state *new_buffer)
void	yypop_buffer_state ()
int	yylex () override
void	switch_streams (std::istream *new_in, std::ostream *new_out=nullptr) override
Public Member Functions inherited from FlexLexer
	FlexLexer ()
virtual	~FlexLexer ()
const char *	YYText () const
int	YYLeng () const
int	yylex (std::istream *new_in, std::ostream *new_out=nullptr)
int	lineno () const
int	debug () const
void	set_debug (int flag)

Public Attributes
class Aprepro &	aprepro

Friends
class	Parser

Additional Inherited Members
Protected Member Functions inherited from SEAMSFlexLexer
virtual void	LexerError (const char *msg)
void	yyunput (int c, char *yy_bp)
int	yyinput ()
void	yy_load_buffer_state ()
void	yy_init_buffer (struct yy_buffer_state *b, std::istream *file)
void	yy_flush_buffer (struct yy_buffer_state *b)
void	yy_push_state (int new_state)
void	yy_pop_state ()
int	yy_top_state ()
yy_state_type	yy_get_previous_state ()
yy_state_type	yy_try_NUL_trans (yy_state_type yy_current_state)
int	yy_get_next_buffer ()
void	yyensure_buffer_stack (void)
Protected Attributes inherited from SEAMSFlexLexer
int	yy_start_stack_ptr
int	yy_start_stack_depth
int *	yy_start_stack
std::istream *	yyin
std::ostream *	yyout
char	yy_hold_char
int	yy_n_chars
char *	yy_c_buf_p
int	yy_init
int	yy_start
int	yy_did_buffer_switch_on_eof
size_t	yy_buffer_stack_top
size_t	yy_buffer_stack_max
struct yy_buffer_state **	yy_buffer_stack
yy_state_type	yy_last_accepting_state
char *	yy_last_accepting_cpos
yy_state_type *	yy_state_buf
yy_state_type *	yy_state_ptr
char *	yy_full_match
int *	yy_full_state
int	yy_full_lp
int	yy_lp
int	yy_looking_for_trail_begin
int	yy_more_flag
int	yy_more_len
int	yy_more_offset
int	yy_prev_more_offset
Protected Attributes inherited from FlexLexer
char *	yytext
int	yyleng
int	yylineno
int	yy_flex_debug

Constructor & Destructor Documentation

Scanner()

SEAMS::Scanner::Scanner ( Aprepro & aprepro_yyarg, std::istream * in = nullptr, std::ostream * out = nullptr )

explicit

Create a new scanner object. The streams arg_yyin and arg_yyout default to cin and cout, but that assignment is only made when initializing in yylex().

~Scanner()

SEAMS::Scanner::~Scanner ( )

override

Required for virtual functions

Member Function Documentation

add_include_file()

bool SEAMS::Scanner::add_include_file	(	const std::string &	filename,
		bool	must_exist )

case_handler()

char * SEAMS::Scanner::case_handler

(

double

x

)

elseif_handler()

char * SEAMS::Scanner::elseif_handler

(

double

x

)

execute()

char * SEAMS::Scanner::execute

(

char *

string

)

if_handler()

char * SEAMS::Scanner::if_handler

(

double

x

)

import_handler()

char * SEAMS::Scanner::import_handler

(

char *

string

)

lex()

virtual Parser::token_type SEAMS::Scanner::lex ( Parser::semantic_type * yylval )

virtual

This is the main lexing function. It is generated by flex according to the macro declaration YY_DECL above. The generated bison parser then calls this virtual function to fetch new tokens.

LexerInput()

int SEAMS::Scanner::LexerInput ( char * buf, int max_size )

overridevirtual

Reimplemented from SEAMSFlexLexer.

LexerOutput()

void SEAMS::Scanner::LexerOutput ( const char * buf, int size )

overridevirtual

Reimplemented from SEAMSFlexLexer.

rescan()

char * SEAMS::Scanner::rescan

(

char *

string

)

save_history_string()

void SEAMS::Scanner::save_history_string

(

)

set_debug()

void SEAMS::Scanner::set_debug

(

bool

b

)

Enable debug output (via arg_yyout) if compiled into the scanner.

switch_handler()

char * SEAMS::Scanner::switch_handler

(

double

x

)

yyerror()

void SEAMS::Scanner::yyerror

(

const char *

s

)

yywrap()

int SEAMS::Scanner::yywrap ( )

overridevirtual

Reimplemented from SEAMSFlexLexer.

Friends And Related Symbol Documentation

Parser

friend class Parser

friend

Member Data Documentation

aprepro

class Aprepro& SEAMS::Scanner::aprepro

---

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

• apr_scanner.h