lex.swf5.c

Ming is a library for generating Macromedia Flash files (.swf), written in C, and includes useful ut

#include <math.h>
#include <string.h>
#include <stdlib.h>

#include "compile.h"
#include "actiontypes.h"
#include "blocks/error.h"
#include "swf5compiler.tab.h" /* defines token types */

static int swf5debug;

static const char *lexBuffer = NULL;
static int lexBufferLen = 0;

static int  sLineNumber = 0, realLine = 0;
static char msgbufs[2][1024] = { {0}, {0} }, *msgline = {0};
static int  column = 0, realColumn = 0, lastToken = 0;

static void comment();
static void comment1();
static void count();
static void countline();
static void warning(char *msg);
static int yy_first_time = 1;
static int yy_new_state;

#define YY_INPUT(buf,result,max_size) result=lexBufferInput(buf, max_size)
#define YY_NO_UNISTD_H
#define YY_USE_PROTOS

/* thanks to the prolific and brilliant Raff: */
static int lexBufferInput(char *buf, int max_size)
{
  int l = lexBufferLen > max_size ? max_size : lexBufferLen;

  if (lexBufferLen <= 0)
    return YY_NULL;

  memcpy(buf, lexBuffer, l);
  lexBuffer += l;
  lexBufferLen -= l;
  return l;
}

static void unescape(char *buf)
{
  char *r, *w;

  r=buf; // read
  w=buf; // write
  while (*r)
  {
	if ( *r == '\\' )
	{
		r++;
		switch(*r)
		{
			case 'b' : *w = '\b'; break;
			case 'f' : *w = '\f'; break;
			case 'n' : *w = '\n'; break;
			case 'r' : *w = '\r'; break;
			case 't' : *w = '\t'; break;
			case 'x' :
			case 'u' : fprintf(stderr,"unsupported escape sequence\n");
				break;
			default : *w = *r; break;
		}
		w++;
		r++;
	}
	else
	{
		*w++ = *r++;
	}
  }
  *w='\0';
}

void swf5ParseInit(const char *script, int debug, int version)
{
  swf5restart(NULL);

  swf5debug = debug;

  lexBuffer = script;
  lexBufferLen = strlen(script);
  sLineNumber = 0;
  column = 0;
  msgline = msgbufs[0];
  swfVersion = version;
}

int read_int (const char *text, YYSTYPE *num)
{
  unsigned long i;

  i = strtoul (text, NULL, 0);
  if (i > 0x7FFFFFFF) {
    /* note: this catches ERANGE, too */
    num->doubleVal = atof(swf5text);
    return DOUBLE;
  }
  num->intVal = i;
  return INTEGER;
}




#line 118 "./swf5compiler.flex"
 // forward declaration needed by the following function
#ifndef YY_PROTO
#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif
#endif
 static void yyunput YY_PROTO(( int c, char *buf_ptr ));

 void do_unput5(const char c) { unput(c); }
#line 1221 "lex.swf5.c"

#define INITIAL 0
#define STATE_ASM 1
#define STATE_LEGACY 2
#define STATE_PURE 3

#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

#ifndef YY_EXTRA_TYPE
#define YY_EXTRA_TYPE void *
#endif

static int yy_init_globals (void );

/* Accessor methods to globals.
   These are made visible to non-reentrant scanners for convenience. */

int swf5lex_destroy (void );

int swf5get_debug (void );

void swf5set_debug (int debug_flag  );

YY_EXTRA_TYPE swf5get_extra (void );

void swf5set_extra (YY_EXTRA_TYPE user_defined  );

FILE *swf5get_in (void );

void swf5set_in  (FILE * in_str  );

FILE *swf5get_out (void );

void swf5set_out  (FILE * out_str  );

int swf5get_leng (void );

char *swf5get_text (void );

int swf5get_lineno (void );

void swf5set_lineno (int line_number  );

/* Macros after this point can all be overridden by user definitions in
 * section 1.
 */

#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int swf5wrap (void );
#else
extern int swf5wrap (void );
#endif
#endif

    static void yyunput (int c,char *buf_ptr  );
    
#ifndef yytext_ptr
static void yy_flex_strncpy (char *,yyconst char *,int );
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen (yyconst char * );
#endif

#ifndef YY_NO_INPUT

#ifdef __cplusplus
static int yyinput (void );
#else
static int input (void );
#endif

#endif

        static int yy_start_stack_ptr = 0;
        static int yy_start_stack_depth = 0;
        static int *yy_start_stack = NULL;
    
    static void yy_push_state (int new_state );
    
    static void yy_pop_state (void );
    
    static int yy_top_state (void );
    
/* 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
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO fwrite( swf5text, swf5leng, 1, swf5out )
#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 ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
		{ \
		int c = '*'; \
		size_t n; \
		for ( n = 0; n < max_size && \
			     (c = getc( swf5in )) != EOF && c != '\n'; ++n ) \
			buf[n] = (char) c; \
		if ( c == '\n' ) \
			buf[n++] = (char) c; \
		if ( c == EOF && ferror( swf5in ) ) \
			YY_FATAL_ERROR( "input in flex scanner failed" ); \
		result = n; \
		} \
	else \
		{ \
		errno=0; \
		while ( (result = fread(buf, 1, max_size, swf5in))==0 && ferror(swf5in)) \
			{ \
			if( errno != EINTR) \
				{ \
				YY_FATAL_ERROR( "input in flex scanner failed" ); \
				break; \
				} \
			errno=0; \
			clearerr(swf5in); \
			} \
		}\
\

#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

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
#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

extern int swf5lex (void);

#define YY_DECL int swf5lex (void)
#endif /* !YY_DECL */

/* Code executed at the beginning of each rule, after swf5text and swf5leng
 * 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;
    
#line 137 "./swf5compiler.flex"



if (yy_first_time) {
	/* start in legacy state */
	yy_push_state(STATE_LEGACY);
	yy_first_time = 0;
	
	/* suppress unused warning for static declared function */
	yy_top_state();
}


#line 1430 "lex.swf5.c"

	if ( !(yy_init) )
		{
		(yy_init) = 1;

#ifdef YY_USER_INIT
		YY_USER_INIT;
#endif

		if ( ! (yy_start) )
			(yy_start) = 1;	/* first start state */

		if ( ! swf5in )
			swf5in = stdin;

		if ( ! swf5out )
			swf5out = stdout;

		if ( ! YY_CURRENT_BUFFER ) {
			swf5ensure_buffer_stack ();
			YY_CURRENT_BUFFER_LVALUE =
				swf5_create_buffer(swf5in,YY_BUF_SIZE );
		}

		swf5_load_buffer_state( );
		}

	while ( 1 )		/* loops until end-of-file is reached */
		{
		yy_cp = (yy_c_buf_p);

		/* Support of swf5text. */
		*yy_cp = (yy_hold_char);

		/* yy_bp points to the position in yy_ch_buf of the start of