/* The c++ scanner is a mess. The FlexLexer.h header file relies on the
* following macro. This is required in order to pass the c++-multiple-scanners
* test in the regression suite. We get reports that it breaks inheritance.
* We will address this in a future release of flex, or omit the C++ scanner
* altogether.
*/
#define yyFlexLexer yyFlexLexer
/* First, we deal with platform-specific or compiler-specific issues. */
/* begin standard C headers. */
/* end standard C headers. */
/* flex integer type definitions */
#ifndef FLEXINT_H
#define FLEXINT_H
/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
* if you want the limit (max/min) macros for int types.
*/
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS 1
#endif
#include <inttypes.h>
typedef int8_t flex_int8_t;
typedef uint8_t flex_uint8_t;
typedef int16_t flex_int16_t;
typedef uint16_t flex_uint16_t;
typedef int32_t flex_int32_t;
typedef uint32_t flex_uint32_t;
#else
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;
#endif /* ! C99 */
/* Returned upon end-of-file. */
#define YY_NULL 0
/* Promotes a possibly negative, possibly signed char to an unsigned
* integer for use as an array index. If the signed char is negative,
* we want to instead treat it as an 8-bit unsigned char, hence the
* double cast.
*/
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
/* Enter a start condition. This macro really ought to take a parameter,
* but we do it the disgusting crufty way forced on us by the ()-less
* definition of BEGIN.
*/
#define BEGIN (yy_start) = 1 + 2 *
/* Translate the current start state into a value that can be later handed
* to BEGIN to return to the state. The YYSTATE alias is for lex
* compatibility.
*/
#define YY_START (((yy_start) - 1) / 2)
#define YYSTATE YY_START
/* Action number for EOF rule of a given start state. */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart( yyin )
/* The state buf must be large enough to hold one state per character in the main buffer.
*/
#define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
/* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
* access to the local variable yy_act. Since yyless() is a macro, it would break
* existing scanners that call yyless() from OUTSIDE yylex.
* One obvious solution it to make yy_act a global. I tried that, and saw
* a 5% performance hit in a non-yylineno scanner, because yy_act is
* normally declared as a register variable-- so it is not worth it.
*/
#define YY_LESS_LINENO(n) \
do { \
int yyl;\
for ( yyl = n; yyl < yyleng; ++yyl )\
if ( yytext[yyl] == '\n' )\
--yylineno;\
}while(0)
/* Return all but the first "n" matched characters back to the input stream. */
#define yyless(n) \
do \
{ \
/* Undo effects of setting up yytext. */ \
int yyless_macro_arg = (n); \
YY_LESS_LINENO(yyless_macro_arg);\
*yy_cp = (yy_hold_char); \
YY_RESTORE_YY_MORE_OFFSET \
(yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
YY_DO_BEFORE_ACTION; /* set up yytext again */ \
} \
while ( 0 )
char *yy_ch_buf; /* input buffer */
char *yy_buf_pos; /* current position in input buffer */
/* Size of input buffer in bytes, not including room for EOB
* characters.
*/
yy_size_t yy_buf_size;
/* Number of characters read into yy_ch_buf, not including EOB
* characters.
*/
yy_size_t yy_n_chars;
/* Whether we "own" the buffer - i.e., we know we created it,
* and can realloc() it to grow it, and should free() it to
* delete it.
*/
int yy_is_our_buffer;
/* Whether this is an "interactive" input source; if so, and
* if we're using stdio for input, then we want to use getc()
* instead of fread(), to make sure we stop fetching input after
* each newline.
*/
int yy_is_interactive;
/* Whether we're considered to be at the beginning of a line.
* If so, '^' rules will be active on the next match, otherwise
* not.
*/
int yy_at_bol;
int yy_bs_lineno; /**< The line count. */
int yy_bs_column; /**< The column count. */
/* Whether to try to fill the input buffer when we reach the
* end of it.
*/
int yy_fill_buffer;
int yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
/* When an EOF's been seen but there's still some text to process
* then we mark the buffer as YY_EOF_PENDING, to indicate that we
* shouldn't try reading from the input source any more. We might
* still have a bunch of tokens to match, though, because of
* possible backing-up.
*
* When we actually see the EOF, we change the status to "new"
* (via yyrestart()), so that the user can continue scanning by
* just pointing yyin at a new input file.
*/
#define YY_BUFFER_EOF_PENDING 2
};
#endif /* !YY_STRUCT_YY_BUFFER_STATE */
/* We provide macros for accessing buffer states in case in the
* future we want to put the buffer states in a more general
* "scanner state".
*
* Returns the top of the stack, or NULL.
*/
#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
? (yy_buffer_stack)[(yy_buffer_stack_top)] \
: NULL)
/* Same as previous macro, but useful when we know that the buffer stack is not
* NULL or when we need an lvalue. For internal use only.
*/
#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
int yyFlexLexer::yywrap() { return 1; }
int yyFlexLexer::yylex()
{
LexerError( "yyFlexLexer::yylex invoked but %option yyclass used" );
return 0;
}
#define YY_DECL int ElftosbLexer::yylex()
/* Done after the current pattern has been matched and before the
* corresponding action - sets up yytext.
*/
#define YY_DO_BEFORE_ACTION \
(yytext_ptr) = yy_bp; \
yyleng = (size_t) (yy_cp - yy_bp); \
(yy_hold_char) = *yy_cp; \
*yy_cp = '\0'; \
(yy_c_buf_p) = yy_cp;
/* The intent behind this definition is that it'll catch
* any uses of REJECT which flex missed.
*/
#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
/* %option prefix="Elftosb" */
#include "ElftosbLexer.h"
#include <stdlib.h>
#include <limits.h>
#include <string>
#include "HexValues.h"
#include "Value.h"
using namespace elftosb;
//! Always executed before all other actions when a token is matched.
//! This action just assign the first and last lines of the token to
//! the current line. In most cases this is correct.
#define YY_USER_ACTION do { \
m_location.m_firstLine = m_line; \
m_location.m_lastLine = m_line; \
} while (0);
/* start conditions */
#define INITIAL 0
#define blob 1
#define mlcmt 2
#ifndef YY_NO_UNISTD_H
/* Special case for "unistd.h", since it is non-ANSI. We include it way
* down here because we want the user's section 1 to have been scanned first.
* The user has a chance to override it with an option.
*/
#include <unistd.h>
#endif
#ifdef YY_NEED_STRLEN
static int yy_flex_strlen (yyconst char * );
#endif
#ifndef YY_NO_INPUT
#endif
/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif
/* Copy whatever the last rule matched to the standard output. */
#ifndef ECHO
#define ECHO LexerOutput( yytext, yyleng )
#endif
/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
* is returned in "result".
*/
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
\
if ( (result = LexerInput( (char *) buf, max_size )) < 0 ) \
YY_FATAL_ERROR( "input in flex scanner failed" );
#endif
/* No semi-colon after return; correct usage is to write "yyterminate();" -
* we don't want an extra ';' after the "return" because that will cause
* some compilers to complain about unreachable statements.
*/
#ifndef yyterminate
#define yyterminate() return YY_NULL
#endif
/* Number of entries by which start-condition stack grows. */
#ifndef YY_START_STACK_INCR
#define YY_START_STACK_INCR 25
#endif
/* end tables serialization structures and prototypes */
/* Default declaration of generated scanner - a define so the user can
* easily add parameters.
*/
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1
#define YY_DECL int yyFlexLexer::yylex()
#endif /* !YY_DECL */
/* Code executed at the beginning of each rule, after yytext and yyleng
* have been set up.
*/
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif
/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif
#define YY_RULE_SETUP \
YY_USER_ACTION
/** The main scanner function which does all the work.
*/
YY_DECL
{
register yy_state_type yy_current_state;
register char *yy_cp, *yy_bp;
register int yy_act;
if ( !(yy_init) )
{
(yy_init) = 1;
#ifdef YY_USER_INIT
YY_USER_INIT;
#endif
if ( ! (yy_start) )
(yy_start) = 1; /* first start state */
if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol[yy_act] )
{
int yyl;
for ( yyl = 0; yyl < yyleng; ++yyl )
if ( yytext[yyl] == '\n' )
yylineno++;
;
}
do_action: /* This label is used only to access EOF actions. */
switch ( yy_act )
{ /* beginning of action switch */
case 0: /* must back up */
/* undo the effects of YY_DO_BEFORE_ACTION */
*yy_cp = (yy_hold_char);
yy_cp = (yy_last_accepting_cpos);
yy_current_state = (yy_last_accepting_state);
goto yy_find_action;
case 1:
YY_RULE_SETUP
{ return TOK_OPTIONS; }
YY_BREAK
case 2:
YY_RULE_SETUP
{ return TOK_CONSTANTS; }
YY_BREAK
case 3:
YY_RULE_SETUP
{ return TOK_SOURCES; }
YY_BREAK
case 4:
YY_RULE_SETUP
{ return TOK_FILTERS; }
YY_BREAK
case 5:
YY_RULE_SETUP
{ return TOK_SECTION; }
YY_BREAK
case 6:
YY_RULE_SETUP
{ return TOK_EXTERN; }
YY_BREAK
case 7:
YY_RULE_SETUP
{ return TOK_FROM; }
YY_BREAK
case 8:
YY_RULE_SETUP
{ return TOK_RAW; }
YY_BREAK
case 9:
YY_RULE_SETUP
{ return TOK_LOAD; }
YY_BREAK
case 10:
YY_RULE_SETUP
{ return TOK_JUMP; }
YY_BREAK
case 11:
YY_RULE_SETUP
{ return TOK_CALL; }
YY_BREAK
case 12:
YY_RULE_SETUP
{ return TOK_MODE; }
YY_BREAK
case 13:
YY_RULE_SETUP
{ return TOK_IF; }
YY_BREAK
case 14:
YY_RULE_SETUP
{ return TOK_ELSE; }
YY_BREAK
case 15:
YY_RULE_SETUP
{ return TOK_DEFINED; }
YY_BREAK
case 16:
YY_RULE_SETUP
{ return TOK_INFO; }
YY_BREAK
case 17:
YY_RULE_SETUP
{ return TOK_WARNING; }
YY_BREAK
case 18:
YY_RULE_SETUP
{ return TOK_ERROR; }
YY_BREAK
case 19:
YY_RULE_SETUP
{ return TOK_SIZEOF; }
YY_BREAK
case 20:
YY_RULE_SETUP
{ return TOK_DCD; }
YY_BREAK
case 21:
YY_RULE_SETUP
{ return TOK_HAB; }
YY_BREAK
case 22:
YY_RULE_SETUP
{ return TOK_IVT; }
YY_BREAK
case 23:
/* rule 23 can match eol */
*yy_cp = (yy_hold_char); /* undo effects of setting up yytext */
(yy_c_buf_p) = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
{ // must be followed by any non-ident char
int_size_t theSize;
switch (yytext[0])
{
case 'w':
theSize = kWordSize;
break;
case 'h':
theSize = kHalfWordSize;
break;
case 'b':
theSize = kByteSize;
break;
}
m_symbolValue.m_int = new elftosb::SizedIntegerValue(0, theSize);
return TOK_INT_SIZE;
}
YY_BREAK
case 24:
YY_RULE_SETUP
{
m_symbolValue.m_int = new elftosb::SizedIntegerValue(1, kWordSize);
return TOK_INT_LITERAL;
}
YY_BREAK
case 25:
YY_RULE_SETUP
{
m_symbolValue.m_int = new elftosb::SizedIntegerValue(0, kWordSize);
return TOK_INT_LITERAL;
}
YY_BREAK
case 26:
YY_RULE_SETUP
{
m_symbolValue.m_str = new std::string(yytext);
if (isSourceName(m_symbolValue.m_str))
{
return TOK_SOURCE_NAME;
}
else
{
return TOK_IDENT;
}
}
YY_BREAK
case 27:
YY_RULE_SETUP
{
int base = 0;
uint32_t value;
int mult;
// check for binary number
if (yytext[0] == '0' && yytext[1] == 'b')
{
base = 2; // this is a binary number
yytext += 2; // skip over the "0b"
}
// convert value
value = (uint32_t)strtoul(yytext, NULL, base);
// find multiplier
switch (yytext[strlen(yytext) - 1])
{
case 'G':
mult = 1024 * 1024 * 1024;
break;
case 'M':
mult = 1024 * 1024;
break;
case 'K':
mult = 1024;
break;
default:
mult = 1;
break;
}
// set resulting symbol value
m_symbolValue.m_int = new elftosb::SizedIntegerValue(value * mult, kWordSize);
return TOK_INT_LITERAL;
}
YY_BREAK
case 28:
YY_RULE_SETUP
{
uint32_t value = 0;
int_size_t theSize;
int len = strlen(yytext);
if (len >= 3)
{
value = yytext[1];
theSize = kByteSize;
}
if (len >= 4)
{
value = (value << 8) | yytext[2];
theSize = kHalfWordSize;
}
if (len >= 6)
{
value = (value << 8) | yytext[3];
value = (value << 8) | yytext[4];
theSize = kWordSize;
}
m_symbolValue.m_int = new elftosb::SizedIntegerValue(value, theSize);
return TOK_INT_LITERAL;
}
YY_BREAK
case 29:
YY_RULE_SETUP
{
// remove $ from string
m_symbolValue.m_str = new std::string(&yytext[1]);
return TOK_SECTION_NAME;
}
YY_BREAK
case 30:
YY_RULE_SETUP
{ BEGIN(mlcmt); }
YY_BREAK
case 31:
YY_RULE_SETUP
{
m_blob = new Blob();
m_blobFirstLine = yylineno;
BEGIN(blob);
}
YY_BREAK
case 32:
YY_RULE_SETUP
{ return '{'; }
YY_BREAK
case 33:
YY_RULE_SETUP
{ return '}'; }
YY_BREAK
case 34:
YY_RULE_SETUP
{ return '('; }
YY_BREAK
case 35:
YY_RULE_SETUP
{ return ')'; }
YY_BREAK
case 36:
YY_RULE_SETUP
{ return '['; }
YY_BREAK
case 37:
YY_RULE_SETUP
{ return ']'; }
YY_BREAK
case 38:
YY_RULE_SETUP
{ return '='; }
YY_BREAK
case 39:
YY_RULE_SETUP
{ return ','; }
YY_BREAK
case 40:
YY_RULE_SETUP
{ return ':'; }
YY_BREAK
case 41:
YY_RULE_SETUP
{ return ';'; }
YY_BREAK
case 42:
YY_RULE_SETUP
{ return '.'; }
YY_BREAK
case 43:
YY_RULE_SETUP
{ return '>'; }
YY_BREAK
case 44:
YY_RULE_SETUP
{ return TOK_DOT_DOT; }
YY_BREAK
case 45:
YY_RULE_SETUP
{ return '+'; }
YY_BREAK
case 46:
YY_RULE_SETUP
{ return '-'; }
YY_BREAK
case 47:
YY_RULE_SETUP
{ return '*'; }
YY_BREAK
case 48:
YY_RULE_SETUP
{ return '/'; }
YY_BREAK
case 49:
YY_RULE_SETUP
{ return '%'; }
YY_BREAK
case 50:
YY_RULE_SETUP
{ return '~'; }
YY_BREAK
case 51:
YY_RULE_SETUP
{ return '^'; }
YY_BREAK
case 52:
YY_RULE_SETUP
{ return TOK_LSHIFT; }
YY_BREAK
case 53:
YY_RULE_SETUP
{ return TOK_RSHIFT; }
YY_BREAK
case 54:
YY_RULE_SETUP
{ return '&'; }
YY_BREAK
case 55:
YY_RULE_SETUP
{ return '|'; }
YY_BREAK
case 56:
YY_RULE_SETUP
{ return TOK_POWER; }
YY_BREAK
case 57:
YY_RULE_SETUP
{ return '<'; }
YY_BREAK
case 58:
YY_RULE_SETUP
{ return TOK_GEQ; }
YY_BREAK
case 59:
YY_RULE_SETUP
{ return TOK_LEQ; }
YY_BREAK
case 60:
YY_RULE_SETUP
{ return TOK_EQ; }
YY_BREAK
case 61:
YY_RULE_SETUP
{ return TOK_NEQ; }
YY_BREAK
case 62:
YY_RULE_SETUP
{ return TOK_AND; }
YY_BREAK
case 63:
YY_RULE_SETUP
{ return TOK_OR; }
YY_BREAK
case 64:
YY_RULE_SETUP
{ return '!'; }
YY_BREAK
case 65:
/* rule 65 can match eol */
YY_RULE_SETUP
{
// get rid of quotes
yytext++;
yytext[strlen(yytext) - 1] = 0;
// processStringEscapes(yytext, yytext);
m_symbolValue.m_str = new std::string(yytext);
return TOK_STRING_LITERAL;
}
YY_BREAK
case 66:
YY_RULE_SETUP
{
uint8_t x = (hexCharToInt(yytext[0]) << 4) | hexCharToInt(yytext[1]);
m_blob->append(&x, 1);
}
YY_BREAK
case 67:
YY_RULE_SETUP
{
BEGIN(INITIAL);
m_symbolValue.m_blob = m_blob;
m_blob = NULL;
m_location.m_firstLine = m_blobFirstLine;
return TOK_BLOB;
}
YY_BREAK
case 68:
YY_RULE_SETUP
{
// end of multi-line comment, return to initial state
BEGIN(INITIAL);
}
YY_BREAK
case 69:
*yy_cp = (yy_hold_char); /* undo effects of setting up yytext */
(yy_c_buf_p) = yy_cp -= 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
/* absorb single-line comment */
YY_BREAK
case 70:
YY_RULE_SETUP
/* eat up whitespace in all states */
YY_BREAK
case 71:
/* rule 71 can match eol */
YY_RULE_SETUP
{
/* eat up whitespace and count lines in all states */
m_line++;
}
YY_BREAK
case 72:
YY_RULE_SETUP
/* ignore all other chars in a multi-line comment */
YY_BREAK
case 73:
YY_RULE_SETUP
{
/* all other chars produce errors */
char msg[50];
sprintf(msg, "unexpected character '%c' on line %d", yytext[0], m_line);
LexerError(msg);
}
YY_BREAK
case 74:
YY_RULE_SETUP
ECHO;
YY_BREAK
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(blob):
case YY_STATE_EOF(mlcmt):
yyterminate();
case YY_END_OF_BUFFER:
{
/* Amount of text matched not including the EOB char. */
int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
/* Undo the effects of YY_DO_BEFORE_ACTION. */
*yy_cp = (yy_hold_char);
YY_RESTORE_YY_MORE_OFFSET
if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
{
/* We're scanning a new file or input source. It's
* possible that this happened because the user
* just pointed yyin at a new source and called
* yylex(). If so, then we have to assure
* consistency between YY_CURRENT_BUFFER and our
* globals. Here is the right place to do so, because
* this is the first action (other than possibly a
* back-up) that will match for the new input source.
*/
(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
}
/* Note that here we test for yy_c_buf_p "<=" to the position
* of the first EOB in the buffer, since yy_c_buf_p will
* already have been incremented past the NUL character
* (since all states make transitions on EOB to the
* end-of-buffer state). Contrast this with the test
* in input().
*/
if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
{ /* This was really a NUL. */
yy_state_type yy_next_state;
/* Okay, we're now positioned to make the NUL
* transition. We couldn't have
* yy_get_previous_state() go ahead and do it
* for us because it doesn't know how to deal
* with the possibility of jamming (and we don't
* want to build jamming into it because then it
* will run more slowly).
*/
if ( yywrap( ) )
{
/* Note: because we've taken care in
* yy_get_next_buffer() to have set up
* yytext, we can now set up
* yy_c_buf_p so that if some total
* hoser (like flex itself) wants to
* call the scanner after we return the
* YY_NULL, it'll still work - another
* YY_NULL will get returned.
*/
(yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
default:
YY_FATAL_ERROR(
"fatal flex scanner internal error--no action found" );
} /* end of action switch */
} /* end of scanning one token */
} /* end of yylex */
/* The contents of this function are C++ specific, so the () macro is not used.
*/
yyFlexLexer::yyFlexLexer( std::istream* arg_yyin, std::ostream* arg_yyout )
{
yyin = arg_yyin;
yyout = arg_yyout;
yy_c_buf_p = 0;
yy_init = 0;
yy_start = 0;
yy_flex_debug = 0;
yylineno = 1; // this will only get updated if %option yylineno
/* The contents of this function are C++ specific, so the () macro is not used.
*/
yyFlexLexer::~yyFlexLexer()
{
delete [] yy_state_buf;
yyfree(yy_start_stack );
yy_delete_buffer( YY_CURRENT_BUFFER );
yyfree(yy_buffer_stack );
}
/* The contents of this function are C++ specific, so the () macro is not used.
*/
void yyFlexLexer::switch_streams( std::istream* new_in, std::ostream* new_out )
{
if ( new_in )
{
yy_delete_buffer( YY_CURRENT_BUFFER );
yy_switch_to_buffer( yy_create_buffer( new_in, YY_BUF_SIZE ) );
}
if ( new_out )
yyout = new_out;
}
#ifdef YY_INTERACTIVE
int yyFlexLexer::LexerInput( char* buf, int /* max_size */ )
#else
int yyFlexLexer::LexerInput( char* buf, int max_size )
#endif
{
if ( yyin->eof() || yyin->fail() )
return 0;
/* yy_get_next_buffer - try to read in a new buffer
*
* Returns a code representing an action:
* EOB_ACT_LAST_MATCH -
* EOB_ACT_CONTINUE_SCAN - continue scanning from current position
* EOB_ACT_END_OF_FILE - end of file
*/
int yyFlexLexer::yy_get_next_buffer()
{
register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
register char *source = (yytext_ptr);
register int number_to_move, i;
int ret_val;
if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
YY_FATAL_ERROR(
"fatal flex scanner internal error--end of buffer missed" );
if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
{ /* Don't try to fill the buffer, so this is an EOF. */
if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
{
/* We matched a single character, the EOB, so
* treat this as a final EOF.
*/
return EOB_ACT_END_OF_FILE;
}
else
{
/* We matched some text prior to the EOB, first
* process it.
*/
return EOB_ACT_LAST_MATCH;
}
}
/* Try to read more data. */
/* First move last chars to start of buffer. */
number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1;
for ( i = 0; i < number_to_move; ++i )
*(dest++) = *(source++);
if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
/* don't do the read, it's not guaranteed to return an EOF,
* just force an EOF
*/
YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
{
/* yy_c_buf_p now points to the character we want to return.
* If this occurs *before* the EOB characters, then it's a
* valid NUL; if not, then we've hit the end of the buffer.
*/
if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
/* This was really a NUL. */
*(yy_c_buf_p) = '\0';
else
{ /* need more input */
yy_size_t offset = (yy_c_buf_p) - (yytext_ptr);
++(yy_c_buf_p);
switch ( yy_get_next_buffer( ) )
{
case EOB_ACT_LAST_MATCH:
/* This happens because yy_g_n_b()
* sees that we've accumulated a
* token and flags that we need to
* try matching the token before
* proceeding. But for input(),
* there's no matching to consider.
* So convert the EOB_ACT_LAST_MATCH
* to EOB_ACT_END_OF_FILE.
*/
/* Reset buffer status. */
yyrestart( yyin );
/*FALLTHROUGH*/
case EOB_ACT_END_OF_FILE:
{
if ( yywrap( ) )
return 0;
/** Immediately switch to a different input stream.
* @param input_file A readable stream.
*
* @note This function does not reset the start condition to @c INITIAL .
*/
void yyFlexLexer::yyrestart( std::istream* input_file )
{
/** Switch to a different input buffer.
* @param new_buffer The new input buffer.
*
*/
void yyFlexLexer::yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
{
/* TODO. We should be able to replace this entire function body
* with
* yypop_buffer_state();
* yypush_buffer_state(new_buffer);
*/
yyensure_buffer_stack ();
if ( YY_CURRENT_BUFFER == new_buffer )
return;
if ( YY_CURRENT_BUFFER )
{
/* Flush out information for old buffer. */
*(yy_c_buf_p) = (yy_hold_char);
YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
}
/* We don't actually know whether we did this switch during
* EOF (yywrap()) processing, but the only time this flag
* is looked at is after yywrap() is called, so it's safe
* to go ahead and always set it.
*/
(yy_did_buffer_switch_on_eof) = 1;
}
/** Allocate and initialize an input buffer state.
* @param file A readable stream.
* @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
*
* @return the allocated buffer state.
*/
YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( std::istream* file, int size )
{
YY_BUFFER_STATE b;
b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) );
if ( ! b )
YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
b->yy_buf_size = size;
/* yy_ch_buf has to be 2 characters longer than the size given because
* we need to put in 2 end-of-buffer characters.
*/
b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 );
if ( ! b->yy_ch_buf )
YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
b->yy_is_our_buffer = 1;
yy_init_buffer( b, file );
return b;
}
/** Destroy the buffer.
* @param b a buffer created with yy_create_buffer()
*
*/
void yyFlexLexer::yy_delete_buffer( YY_BUFFER_STATE b )
{
if ( ! b )
return;
if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
if ( b->yy_is_our_buffer )
yyfree((void *) b->yy_ch_buf );
yyfree((void *) b );
}
/* Initializes or reinitializes a buffer.
* This function is sometimes called more than once on the same buffer,
* such as during a yyrestart() or at EOF.
*/
void yyFlexLexer::yy_init_buffer( YY_BUFFER_STATE b, std::istream* file )
{
int oerrno = errno;
yy_flush_buffer( b );
b->yy_input_file = file;
b->yy_fill_buffer = 1;
/* If b is the current buffer, then yy_init_buffer was _probably_
* called from yyrestart() or through yy_get_next_buffer.
* In that case, we don't want to reset the lineno or column.
*/
if (b != YY_CURRENT_BUFFER){
b->yy_bs_lineno = 1;
b->yy_bs_column = 0;
}
b->yy_is_interactive = 0;
errno = oerrno;
}
/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
* @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
*
*/
void yyFlexLexer::yy_flush_buffer( YY_BUFFER_STATE b )
{
if ( ! b )
return;
b->yy_n_chars = 0;
/* We always need two end-of-buffer characters. The first causes
* a transition to the end-of-buffer state. The second causes
* a jam in that state.
*/
b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
if ( b == YY_CURRENT_BUFFER )
yy_load_buffer_state( );
}
/** Pushes the new state onto the stack. The new state becomes
* the current state. This function will allocate the stack
* if necessary.
* @param new_buffer The new state.
*
*/
void yyFlexLexer::yypush_buffer_state (YY_BUFFER_STATE new_buffer)
{
if (new_buffer == NULL)
return;
yyensure_buffer_stack();
/* This block is copied from yy_switch_to_buffer. */
if ( YY_CURRENT_BUFFER )
{
/* Flush out information for old buffer. */
*(yy_c_buf_p) = (yy_hold_char);
YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
}
/* Only push if top exists. Otherwise, replace top. */
if (YY_CURRENT_BUFFER)
(yy_buffer_stack_top)++;
YY_CURRENT_BUFFER_LVALUE = new_buffer;
/** Removes and deletes the top of the stack, if present.
* The next element becomes the new top.
*
*/
void yyFlexLexer::yypop_buffer_state (void)
{
if (!YY_CURRENT_BUFFER)
return;
yy_delete_buffer(YY_CURRENT_BUFFER );
YY_CURRENT_BUFFER_LVALUE = NULL;
if ((yy_buffer_stack_top) > 0)
--(yy_buffer_stack_top);
if (YY_CURRENT_BUFFER) {
yy_load_buffer_state( );
(yy_did_buffer_switch_on_eof) = 1;
}
}
/* Allocates the stack if it does not exist.
* Guarantees space for at least one push.
*/
void yyFlexLexer::yyensure_buffer_stack(void)
{
yy_size_t num_to_alloc;
if (!(yy_buffer_stack)) {
/* First allocation is just for 2 elements, since we don't know if this
* scanner will even need a stack. We use 2 instead of 1 to avoid an
* immediate realloc on the next call.
*/
num_to_alloc = 1;
(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
(num_to_alloc * sizeof(struct yy_buffer_state*)
);
if ( ! (yy_buffer_stack) )
YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
/* Increase the buffer to prepare for a possible push. */
int grow_size = 8 /* arbitrary grow size */;
num_to_alloc = (yy_buffer_stack_max) + grow_size;
(yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
((yy_buffer_stack),
num_to_alloc * sizeof(struct yy_buffer_state*)
);
if ( ! (yy_buffer_stack) )
YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
/* zero only the new slots.*/
memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
(yy_buffer_stack_max) = num_to_alloc;
}
}
void yyFlexLexer::yy_push_state( int new_state )
{
if ( (yy_start_stack_ptr) >= (yy_start_stack_depth) )
{
yy_size_t new_size;
(yy_start_stack_depth) += YY_START_STACK_INCR;
new_size = (yy_start_stack_depth) * sizeof( int );
void *yyrealloc (void * ptr, yy_size_t size )
{
/* The cast to (char *) in the following accommodates both
* implementations that use char* generic pointers, and those
* that use void* generic pointers. It works with the latter
* because both ANSI C and C++ allow castless assignment from
* any pointer type to void*, and deal with argument conversions
* as though doing an assignment.
*/
return (void *) realloc( (char *) ptr, size );
}
