scanner.c File Reference

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <ctype.h>
#include "grammar.h"

Include dependency graph for scanner.c:

Data Structures
struct	yy_buffer_state
struct	yy_trans_info
struct	yyguts_t
Defines
#define	YY_INT_ALIGNED   short int
#define	FLEX_SCANNER
#define	YY_FLEX_MAJOR_VERSION   2
#define	YY_FLEX_MINOR_VERSION   5
#define	YY_FLEX_SUBMINOR_VERSION   35
#define	FLEXINT_H
#define	INT8_MIN   (-128)
#define	INT16_MIN   (-32767-1)
#define	INT32_MIN   (-2147483647-1)
#define	INT8_MAX   (127)
#define	INT16_MAX   (32767)
#define	INT32_MAX   (2147483647)
#define	UINT8_MAX   (255U)
#define	UINT16_MAX   (65535U)
#define	UINT32_MAX   (4294967295U)
#define	yyconst
#define	YY_NULL   0
#define	YY_SC_TO_UI(c)   ((unsigned int) (unsigned char) c)
#define	YY_TYPEDEF_YY_SCANNER_T
#define	yyin   yyg->yyin_r
#define	yyout   yyg->yyout_r
#define	yyextra   yyg->yyextra_r
#define	yyleng   yyg->yyleng_r
#define	yytext   yyg->yytext_r
#define	yylineno   (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)
#define	yycolumn   (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)
#define	yy_flex_debug   yyg->yy_flex_debug_r
#define	BEGIN   yyg->yy_start = 1 + 2 *
#define	YY_START   ((yyg->yy_start - 1) / 2)
#define	YYSTATE   YY_START
#define	YY_STATE_EOF(state)   (YY_END_OF_BUFFER + state + 1)
#define	YY_NEW_FILE   libconfig_yyrestart(yyin ,yyscanner )
#define	YY_END_OF_BUFFER_CHAR   0
#define	YY_BUF_SIZE   16384
#define	YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
#define	YY_TYPEDEF_YY_BUFFER_STATE
#define	EOB_ACT_CONTINUE_SCAN   0
#define	EOB_ACT_END_OF_FILE   1
#define	EOB_ACT_LAST_MATCH   2
#define	YY_LESS_LINENO(n)
#define	yyless(n)
#define	unput(c)   yyunput( c, yyg->yytext_ptr , yyscanner )
#define	YY_TYPEDEF_YY_SIZE_T
#define	YY_STRUCT_YY_BUFFER_STATE
#define	YY_BUFFER_NEW   0
#define	YY_BUFFER_NORMAL   1
#define	YY_BUFFER_EOF_PENDING   2
#define	YY_CURRENT_BUFFER
#define	YY_CURRENT_BUFFER_LVALUE   yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
#define	YY_FLUSH_BUFFER   libconfig_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
#define	yy_new_buffer   libconfig_yy_create_buffer
#define	yy_set_interactive(is_interactive)
#define	yy_set_bol(at_bol)
#define	YY_AT_BOL()   (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
#define	libconfig_yywrap(n)   1
#define	YY_SKIP_YYWRAP
#define	yytext_ptr   yytext_r
#define	YY_DO_BEFORE_ACTION
#define	YY_NUM_RULES   26
#define	YY_END_OF_BUFFER   27
#define	REJECT   reject_used_but_not_detected
#define	yymore()   yymore_used_but_not_detected
#define	YY_MORE_ADJ   0
#define	YY_RESTORE_YY_MORE_OFFSET
#define	YY_EXTRA_TYPE   void*
#define	YY_NO_UNISTD_H   1
#define	INITIAL   0
#define	COMMENT   1
#define	YY_EXTRA_TYPE   void *
#define	yylval   yyg->yylval_r
#define	YY_READ_BUF_SIZE   8192
#define	ECHO   fwrite( yytext, yyleng, 1, yyout )
#define	YY_INPUT(buf, result, max_size)
#define	yyterminate()   return YY_NULL
#define	YY_START_STACK_INCR   25
#define	YY_FATAL_ERROR(msg)   yy_fatal_error( msg , yyscanner)
#define	YY_DECL_IS_OURS   1
#define	YY_DECL
#define	YY_USER_ACTION
#define	YY_BREAK   break;
#define	YY_RULE_SETUP   YY_USER_ACTION
#define	YY_EXIT_FAILURE   2
#define	yyless(n)
#define	YYTABLES_NAME   "yytables"
Typedefs
typedef signed char	flex_int8_t
typedef short int	flex_int16_t
typedef int	flex_int32_t
typedef unsigned char	flex_uint8_t
typedef unsigned short int	flex_uint16_t
typedef unsigned int	flex_uint32_t
typedef void *	yyscan_t
typedef struct yy_buffer_state *	YY_BUFFER_STATE
typedef size_t	yy_size_t
typedef unsigned char	YY_CHAR
typedef int	yy_state_type
Functions
void	libconfig_yyrestart (FILE *input_file, yyscan_t yyscanner)
void	libconfig_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer, yyscan_t yyscanner)
YY_BUFFER_STATE	libconfig_yy_create_buffer (FILE *file, int size, yyscan_t yyscanner)
void	libconfig_yy_delete_buffer (YY_BUFFER_STATE b, yyscan_t yyscanner)
void	libconfig_yy_flush_buffer (YY_BUFFER_STATE b, yyscan_t yyscanner)
void	libconfig_yypush_buffer_state (YY_BUFFER_STATE new_buffer, yyscan_t yyscanner)
void	libconfig_yypop_buffer_state (yyscan_t yyscanner)
YY_BUFFER_STATE	libconfig_yy_scan_buffer (char *base, yy_size_t size, yyscan_t yyscanner)
YY_BUFFER_STATE	libconfig_yy_scan_string (yyconst char *yy_str, yyscan_t yyscanner)
YY_BUFFER_STATE	libconfig_yy_scan_bytes (yyconst char *bytes, int len, yyscan_t yyscanner)
void *	libconfig_yyalloc (yy_size_t, yyscan_t yyscanner)
void *	libconfig_yyrealloc (void *, yy_size_t, yyscan_t yyscanner)
void	libconfig_yyfree (void *, yyscan_t yyscanner)
int	libconfig_yylex_init (yyscan_t *scanner)
int	libconfig_yylex_init_extra (YY_EXTRA_TYPE user_defined, yyscan_t *scanner)
int	libconfig_yylex_destroy (yyscan_t yyscanner)
int	libconfig_yyget_debug (yyscan_t yyscanner)
void	libconfig_yyset_debug (int debug_flag, yyscan_t yyscanner)
YY_EXTRA_TYPE	libconfig_yyget_extra (yyscan_t yyscanner)
void	libconfig_yyset_extra (YY_EXTRA_TYPE user_defined, yyscan_t yyscanner)
FILE *	libconfig_yyget_in (yyscan_t yyscanner)
void	libconfig_yyset_in (FILE *in_str, yyscan_t yyscanner)
FILE *	libconfig_yyget_out (yyscan_t yyscanner)
void	libconfig_yyset_out (FILE *out_str, yyscan_t yyscanner)
int	libconfig_yyget_leng (yyscan_t yyscanner)
char *	libconfig_yyget_text (yyscan_t yyscanner)
int	libconfig_yyget_lineno (yyscan_t yyscanner)
void	libconfig_yyset_lineno (int line_number, yyscan_t yyscanner)
YYSTYPE *	libconfig_yyget_lval (yyscan_t yyscanner)
void	libconfig_yyset_lval (YYSTYPE *yylval_param, yyscan_t yyscanner)
int	libconfig_yywrap (yyscan_t yyscanner)
int	libconfig_yylex (YYSTYPE *yylval_param, yyscan_t yyscanner)
int	libconfig_yyget_column (yyscan_t yyscanner)
void	libconfig_yyset_column (int column_no, yyscan_t yyscanner)

---

Define Documentation

#define BEGIN   yyg->yy_start = 1 + 2 *

#define COMMENT   1

#define ECHO   fwrite( yytext, yyleng, 1, yyout )

#define EOB_ACT_CONTINUE_SCAN   0

#define EOB_ACT_END_OF_FILE   1

#define EOB_ACT_LAST_MATCH   2

#define FLEX_SCANNER

#define FLEXINT_H

#define INITIAL   0

#define INT16_MAX   (32767)

#define INT16_MIN   (-32767-1)

#define INT32_MAX   (2147483647)

#define INT32_MIN   (-2147483647-1)

#define INT8_MAX   (127)

#define INT8_MIN   (-128)

#define libconfig_yywrap

(

n

)

1

#define REJECT   reject_used_but_not_detected

#define UINT16_MAX   (65535U)

#define UINT32_MAX   (4294967295U)

#define UINT8_MAX   (255U)

#define unput

(

c

)

yyunput( c, yyg->yytext_ptr , yyscanner )

#define YY_AT_BOL

(

)

(YY_CURRENT_BUFFER_LVALUE->yy_at_bol)

#define YY_BREAK   break;

#define YY_BUF_SIZE   16384

#define YY_BUFFER_EOF_PENDING   2

#define YY_BUFFER_NEW   0

#define YY_BUFFER_NORMAL   1

#define YY_CURRENT_BUFFER

Value:

( yyg->yy_buffer_stack \
                          ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                          : NULL)

#define YY_CURRENT_BUFFER_LVALUE   yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]

#define YY_DECL

Value:

int libconfig_yylex \
               (YYSTYPE * yylval_param , yyscan_t yyscanner)

#define YY_DECL_IS_OURS   1

#define YY_DO_BEFORE_ACTION

Value:

yyg->yytext_ptr = yy_bp; \
        yyleng = (size_t) (yy_cp - yy_bp); \
        yyg->yy_hold_char = *yy_cp; \
        *yy_cp = '\0'; \
        yyg->yy_c_buf_p = yy_cp;

#define YY_END_OF_BUFFER   27

#define YY_END_OF_BUFFER_CHAR   0

#define YY_EXIT_FAILURE   2

#define YY_EXTRA_TYPE   void*

#define YY_EXTRA_TYPE   void *

#define YY_FATAL_ERROR

(

msg

)

yy_fatal_error( msg , yyscanner)

#define yy_flex_debug   yyg->yy_flex_debug_r

#define YY_FLEX_MAJOR_VERSION   2

#define YY_FLEX_MINOR_VERSION   5

#define YY_FLEX_SUBMINOR_VERSION   35

#define YY_FLUSH_BUFFER   libconfig_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)

#define YY_INPUT	(		buf,
			result,
			max_size
	)

Value:

if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
                { \
                int c = '*'; \
                unsigned n; \
                for ( n = 0; n < max_size && \
                             (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
                        buf[n] = (char) c; \
                if ( c == '\n' ) \
                        buf[n++] = (char) c; \
                if ( c == EOF && ferror( yyin ) ) \
                        YY_FATAL_ERROR( "input in flex scanner failed" ); \
                result = n; \
                } \
        else \
                { \
                errno=0; \
                while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
                        { \
                        if( errno != EINTR) \
                                { \
                                YY_FATAL_ERROR( "input in flex scanner failed" ); \
                                break; \
                                } \
                        errno=0; \
                        clearerr(yyin); \
                        } \
                }\
\

#define YY_INT_ALIGNED   short int

#define YY_LESS_LINENO

(

n

)

Value:

do { \
                int yyl;\
                for ( yyl = n; yyl < yyleng; ++yyl )\
                    if ( yytext[yyl] == '\n' )\
                        --yylineno;\
            }while(0)

#define YY_MORE_ADJ   0

#define yy_new_buffer   libconfig_yy_create_buffer

#define YY_NEW_FILE   libconfig_yyrestart(yyin ,yyscanner )

#define YY_NO_UNISTD_H   1

#define YY_NULL   0

#define YY_NUM_RULES   26

#define YY_READ_BUF_SIZE   8192

#define YY_RESTORE_YY_MORE_OFFSET

#define YY_RULE_SETUP   YY_USER_ACTION

#define YY_SC_TO_UI

(

c

)

((unsigned int) (unsigned char) c)

#define yy_set_bol

(

at_bol

)

Value:

{ \
        if ( ! YY_CURRENT_BUFFER ){\
        libconfig_yyensure_buffer_stack (yyscanner); \
                YY_CURRENT_BUFFER_LVALUE =    \
            libconfig_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
        } \
        YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
        }

#define yy_set_interactive

(

is_interactive

)

Value:

{ \
        if ( ! YY_CURRENT_BUFFER ){ \
        libconfig_yyensure_buffer_stack (yyscanner); \
                YY_CURRENT_BUFFER_LVALUE =    \
            libconfig_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
        } \
        YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
        }

#define YY_SKIP_YYWRAP

#define YY_START   ((yyg->yy_start - 1) / 2)

#define YY_START_STACK_INCR   25

#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))

#define YY_STATE_EOF

(

state

)

(YY_END_OF_BUFFER + state + 1)

#define YY_STRUCT_YY_BUFFER_STATE

#define YY_TYPEDEF_YY_BUFFER_STATE

#define YY_TYPEDEF_YY_SCANNER_T

#define YY_TYPEDEF_YY_SIZE_T

#define YY_USER_ACTION

#define yycolumn   (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)

#define yyconst

#define yyextra   yyg->yyextra_r

#define yyin   yyg->yyin_r

#define yyleng   yyg->yyleng_r

#define yyless

(

n

)

Value:

do \
                { \
                /* Undo effects of setting up yytext. */ \
        int yyless_macro_arg = (n); \
        YY_LESS_LINENO(yyless_macro_arg);\
                *yy_cp = yyg->yy_hold_char; \
                YY_RESTORE_YY_MORE_OFFSET \
                yyg->yy_c_buf_p = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
                YY_DO_BEFORE_ACTION; /* set up yytext again */ \
                } \
        while ( 0 )

#define yyless

(

n

)

Value:

do \
                { \
                /* Undo effects of setting up yytext. */ \
        int yyless_macro_arg = (n); \
        YY_LESS_LINENO(yyless_macro_arg);\
                yytext[yyleng] = yyg->yy_hold_char; \
                yyg->yy_c_buf_p = yytext + yyless_macro_arg; \
                yyg->yy_hold_char = *yyg->yy_c_buf_p; \
                *yyg->yy_c_buf_p = '\0'; \
                yyleng = yyless_macro_arg; \
                } \
        while ( 0 )

#define yylineno   (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)

#define yylval   yyg->yylval_r

#define yymore

(

)

yymore_used_but_not_detected

#define yyout   yyg->yyout_r

#define YYSTATE   YY_START

#define YYTABLES_NAME   "yytables"

#define yyterminate

(

)

return YY_NULL

#define yytext   yyg->yytext_r

#define yytext_ptr   yytext_r

---

Typedef Documentation

typedef short int flex_int16_t

typedef int flex_int32_t

typedef signed char flex_int8_t

typedef unsigned short int flex_uint16_t

typedef unsigned int flex_uint32_t

typedef unsigned char flex_uint8_t

typedef struct yy_buffer_state* YY_BUFFER_STATE

typedef unsigned char YY_CHAR

typedef size_t yy_size_t

typedef int yy_state_type

typedef void* yyscan_t

---

Function Documentation

YY_BUFFER_STATE libconfig_yy_create_buffer	(	FILE *	file,
		int	size,
		yyscan_t	yyscanner
	)

void libconfig_yy_delete_buffer	(	YY_BUFFER_STATE	b,
		yyscan_t	yyscanner
	)

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void libconfig_yy_flush_buffer	(	YY_BUFFER_STATE	b,
		yyscan_t	yyscanner
	)

Discard all buffered characters. On the next scan, YY_INPUT will be called.

Parameters:

b	the buffer state to be flushed, usually YY_CURRENT_BUFFER.
yyscanner	The scanner object.

YY_BUFFER_STATE libconfig_yy_scan_buffer	(	char *	base,
		yy_size_t	size,
		yyscan_t	yyscanner
	)

Setup the input buffer state to scan directly from a user-specified character buffer.

Parameters:

base	the character buffer
size	the size in bytes of the character buffer
yyscanner	The scanner object.

Returns:

the newly allocated buffer state object.

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YY_BUFFER_STATE libconfig_yy_scan_bytes	(	yyconst char *	yybytes,
		int	_yybytes_len,
		yyscan_t	yyscanner
	)

Setup the input buffer state to scan the given bytes. The next call to libconfig_yylex() will scan from a copy of bytes.

Parameters:

bytes	the byte buffer to scan
len	the number of bytes in the buffer pointed to by bytes.
yyscanner	The scanner object.

Returns:

the newly allocated buffer state object.

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YY_BUFFER_STATE libconfig_yy_scan_string	(	yyconst char *	yystr,
		yyscan_t	yyscanner
	)

Setup the input buffer state to scan a string. The next call to libconfig_yylex() will scan from a copy of str.

Parameters:

yystr	a NUL-terminated string to scan
yyscanner	The scanner object.

Returns:

the newly allocated buffer state object.

Note:

If you want to scan bytes that may contain NUL values, then use libconfig_yy_scan_bytes() instead.

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void libconfig_yy_switch_to_buffer	(	YY_BUFFER_STATE	new_buffer,
		yyscan_t	yyscanner
	)

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void * libconfig_yyalloc	(	yy_size_t	size,
		yyscan_t	yyscanner
	)

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void libconfig_yyfree	(	void *	ptr,
		yyscan_t	yyscanner
	)

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int libconfig_yyget_column

(

yyscan_t

yyscanner

)

Get the current column number.

Parameters:

yyscanner

The scanner object.

int libconfig_yyget_debug

(

yyscan_t

yyscanner

)

YY_EXTRA_TYPE libconfig_yyget_extra

(

yyscan_t

yyscanner

)

Get the user-defined data for this scanner.

Parameters:

yyscanner

The scanner object.

FILE * libconfig_yyget_in

(

yyscan_t

yyscanner

)

Get the input stream.

Parameters:

yyscanner

The scanner object.

int libconfig_yyget_leng

(

yyscan_t

yyscanner

)

Get the length of the current token.

Parameters:

yyscanner

The scanner object.

int libconfig_yyget_lineno

(

yyscan_t

yyscanner

)

Get the current line number.

Parameters:

yyscanner

The scanner object.

YYSTYPE * libconfig_yyget_lval

(

yyscan_t

yyscanner

)

FILE * libconfig_yyget_out

(

yyscan_t

yyscanner

)

Get the output stream.

Parameters:

yyscanner

The scanner object.

char * libconfig_yyget_text

(

yyscan_t

yyscanner

)

Get the current token.

Parameters:

yyscanner

The scanner object.

int libconfig_yylex	(	YYSTYPE *	yylval_param,
		yyscan_t	yyscanner
	)

int libconfig_yylex_destroy

(

yyscan_t

yyscanner

)

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int libconfig_yylex_init

(

yyscan_t *

scanner

)

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int libconfig_yylex_init_extra	(	YY_EXTRA_TYPE	user_defined,
		yyscan_t *	scanner
	)

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void libconfig_yypop_buffer_state

(

yyscan_t

yyscanner

)

Removes and deletes the top of the stack, if present. The next element becomes the new top.

Parameters:

yyscanner

The scanner object.

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void libconfig_yypush_buffer_state	(	YY_BUFFER_STATE	new_buffer,
		yyscan_t	yyscanner
	)

Pushes the new state onto the stack. The new state becomes the current state. This function will allocate the stack if necessary.

Parameters:

new_buffer	The new state.
yyscanner	The scanner object.

void * libconfig_yyrealloc	(	void *	ptr,
		yy_size_t	size,
		yyscan_t	yyscanner
	)

void libconfig_yyrestart	(	FILE *	input_file,
		yyscan_t	yyscanner
	)

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void libconfig_yyset_column	(	int	column_no,
		yyscan_t	yyscanner
	)

Set the current column.

Parameters:

line_number
yyscanner	The scanner object.

void libconfig_yyset_debug	(	int	debug_flag,
		yyscan_t	yyscanner
	)

void libconfig_yyset_extra	(	YY_EXTRA_TYPE	user_defined,
		yyscan_t	yyscanner
	)

Set the user-defined data. This data is never touched by the scanner.

Parameters:

user_defined	The data to be associated with this scanner.
yyscanner	The scanner object.

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void libconfig_yyset_in	(	FILE *	in_str,
		yyscan_t	yyscanner
	)

Set the input stream. This does not discard the current input buffer.

Parameters:

in_str	A readable stream.
yyscanner	The scanner object.

See also:

libconfig_yy_switch_to_buffer

void libconfig_yyset_lineno	(	int	line_number,
		yyscan_t	yyscanner
	)

Set the current line number.

Parameters:

line_number
yyscanner	The scanner object.

void libconfig_yyset_lval	(	YYSTYPE *	yylval_param,
		yyscan_t	yyscanner
	)

void libconfig_yyset_out	(	FILE *	out_str,
		yyscan_t	yyscanner
	)

int libconfig_yywrap

(

yyscan_t

yyscanner

)