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|
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define TK_Dlit 256
#define TK_Slit 257
#define TK_Float 258
#define TK_Id 259
#define TK_NameSep 260
#define TK_Arrow 261
#define TK_PlusPlus 262
#define TK_MinusMinus 263
#define TK_ArrowStar 264
#define TK_DotStar 265
#define TK_ShiftLeft 266
#define TK_ShiftRight 267
#define TK_IntegerDecimal 268
#define TK_IntegerOctal 269
#define TK_IntegerHex 270
#define TK_EqualsEquals 271
#define TK_NotEquals 272
#define TK_AndAnd 273
#define TK_OrOr 274
#define TK_MultAssign 275
#define TK_DivAssign 276
#define TK_PercentAssign 277
#define TK_PlusAssign 278
#define TK_MinusAssign 279
#define TK_AmpAssign 280
#define TK_CaretAssign 281
#define TK_BarAssign 282
#define TK_DotDotDot 283
#define TK_Whitespace 284
#define TK_Comment 285
int line = 1, col = 1;
void token( int tok, char *data, int len )
{
printf( "<%i> ", tok );
for ( int i = 0; i < len; i++ )
fputc( data[i], stdout );
fputc( '\n', stdout );
/* Count newlines and columns. This code is here mainly for having some
* code in the token routine when commenting out the above output during
* performance testing. */
for ( int i = 0; i < len; i ++ ) {
if ( data[i] == '\n' ) {
line += 1;
col = 1;
}
else {
col += 1;
}
}
}
#define BUFSIZE 8192
char buf[BUFSIZE];
void fill( int n )
{
printf("fill(%i)\n", n);
exit(1);
}
int main()
{
char *start, *p = buf, *lim = buf, *marker;
int len, have, want, shift;
int done = 0;
#define YYCTYPE char
#define YYCURSOR p
#define YYLIMIT lim
#define YYMARKER marker
#define YYFILL(n) { \
if ( ! done ) { \
have = lim-start; \
if ( start > buf ) { \
shift = start-buf; \
memmove( buf, start, have ); \
start -= shift; \
p -= shift; \
lim -= shift; \
marker -= shift; \
} \
want = BUFSIZE - have - 1; \
len = fread( lim, 1, want, stdin ); \
lim += len; \
if ( len < want ) { \
*lim++ = 0; \
done = 1; \
} \
} \
}
again:
start = p;
/*!re2c
ANY = [\000-\377];
FRACTCONST = ( [0-9]* "." [0-9]+ ) | [0-9]+ ".";
EXPONENT = [eE] [+\-]? [0-9]+;
FLOATSUFFIX = [flFL];
"L"? "\'" ( ANY \ [\'\\\n] | "\\" ANY )* "\'" {
token( TK_Slit, start, p-start );
goto again;
}
"L"? "\"" ( ANY \ [\"\\\n] | "\\" ANY )* "\"" {
token( TK_Dlit, start, p-start );
goto again;
}
[a-zA-Z_][a-zA-Z0-9_]* {
token( TK_Id, start, p-start );
goto again;
}
( FRACTCONST EXPONENT? FLOATSUFFIX? ) | ( [0-9]+ EXPONENT FLOATSUFFIX? ) {
token( TK_Float, start, p-start );
goto again;
}
( "0" | [1-9][0-9]* ) [ulUL]* {
token( TK_IntegerDecimal, start, p-start );
goto again;
}
"0" [0-9]+ [ulUL]* {
token( TK_IntegerOctal, start, p-start );
goto again;
}
"0x" [0-9a-fA-F]+[ulUL]* {
token( TK_IntegerHex, start, p-start );
goto again;
}
"::" { token( TK_NameSep, start, p-start ); goto again; }
"==" { token( TK_EqualsEquals, start, p-start ); goto again; }
"!=" { token( TK_NotEquals, start, p-start ); goto again; }
"&&" { token( TK_AndAnd, start, p-start ); goto again; }
"||" { token( TK_OrOr, start, p-start ); goto again; }
"*=" { token( TK_MultAssign, start, p-start ); goto again; }
"/=" { token( TK_DivAssign, start, p-start ); goto again; }
"%=" { token( TK_PercentAssign, start, p-start ); goto again; }
"+=" { token( TK_PlusAssign, start, p-start ); goto again; }
"-=" { token( TK_MinusAssign, start, p-start ); goto again; }
"&=" { token( TK_AmpAssign, start, p-start ); goto again; }
"^=" { token( TK_CaretAssign, start, p-start ); goto again; }
"|=" { token( TK_BarAssign, start, p-start ); goto again; }
"++" { token( TK_PlusPlus, start, p-start ); goto again; }
"--" { token( TK_MinusMinus, start, p-start ); goto again; }
"->" { token( TK_Arrow, start, p-start ); goto again; }
"->*" { token( TK_ArrowStar, start, p-start ); goto again; }
".*" { token( TK_DotStar, start, p-start ); goto again; }
"..." { token( TK_DotDotDot, start, p-start ); goto again; }
"/*" { goto comment; }
"//" (ANY\"\n")* "\n" { goto again; }
[\001-\040\177]+ { goto again; }
[\041-\057\072-\100\133-\140\173-\176] {
token( *start, start, p-start );
goto again;
}
"\000" { return 0; }
*/
comment:
/*!re2c
"*/" { goto again; }
ANY { goto comment; }
*/
}
|
