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#ifndef _CPPSCAN1_H
#define _CPPSCAN1_H
#include <iostream>
#include <cstdlib>
#include <cstring>
using namespace std;
#define BUFSIZE 2048
#define TK_Dlit 192
#define TK_Slit 193
#define TK_Float 194
#define TK_Id 195
#define TK_NameSep 197
#define TK_Arrow 211
#define TK_PlusPlus 212
#define TK_MinusMinus 213
#define TK_ArrowStar 214
#define TK_DotStar 215
#define TK_ShiftLeft 216
#define TK_ShiftRight 217
#define TK_IntegerDecimal 218
#define TK_IntegerOctal 219
#define TK_IntegerHex 220
#define TK_EqualsEquals 223
#define TK_NotEquals 224
#define TK_AndAnd 225
#define TK_OrOr 226
#define TK_MultAssign 227
#define TK_DivAssign 228
#define TK_PercentAssign 229
#define TK_PlusAssign 230
#define TK_MinusAssign 231
#define TK_AmpAssign 232
#define TK_CaretAssign 233
#define TK_BarAssign 234
#define TK_DotDotDot 240
/* A growable buffer for collecting headers. */
struct Buffer
{
Buffer() : data(0), allocated(0), length(0) { }
Buffer( const Buffer &other ) {
data = (char*)malloc( other.allocated );
memcpy( data, other.data, other.length );
allocated = other.allocated;
length = other.length;
}
~Buffer() { empty(); }
void append( char p ) {
if ( ++length > allocated )
upAllocate( length*2 );
data[length-1] = p;
}
void append( char *str, int len ) {
if ( (length += len) > allocated )
upAllocate( length*2 );
memcpy( data+length-len, str, len );
}
void clear() { length = 0; }
void upAllocate( int len );
void empty();
char *data;
int allocated;
int length;
};
struct Scanner
{
Scanner( std::ostream &out )
: out(out) { }
std::ostream &out;
int line, col;
int tokStart;
int inlineDepth;
int count;
Buffer tokBuf;
Buffer nonTokBuf;
void pass(char c) { nonTokBuf.append(c); }
void buf(char c) { tokBuf.append(c); }
void token( int id );
int cs, stack, top;
// Initialize the machine. Invokes any init statement blocks. Returns 0
// if the machine begins in a non-accepting state and 1 if the machine
// begins in an accepting state.
void init( );
// Execute the machine on a block of data. Returns -1 if after processing
// the data, the machine is in the error state and can never accept, 0 if
// the machine is in a non-accepting state and 1 if the machine is in an
// accepting state.
int execute( const char *data, int len );
// Indicate that there is no more data. Returns -1 if the machine finishes
// in the error state and does not accept, 0 if the machine finishes
// in any other non-accepting state and 1 if the machine finishes in an
// accepting state.
int finish( );
};
#endif
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