mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-22 12:11:25 +00:00
ec17f5a5b9
error handling. - Fixed: dehsupp/scanner.re defined "}" as the token RPAREN. dehsupp/parse.y also defined action_list_def as needing a RBARCE. I'm surprised it worked at all before. I guess Lemon really was too accepting. - Changed the way that xlatcc handles include statements so that I don't need to modify the logic of lempar.c. I also discovered that the grammar was improperly defined and only accepted the first statement. It worked before because Lemon used to accept multiple times before reaching the EOF token. I have also verified that it is still generating the proper lumps. - Removed some unused wadsrc files from the repository. - Fixed my re2c upgrade. - Updated lemon.c to v1.53. SVN r711 (trunk)
381 lines
8 KiB
C++
381 lines
8 KiB
C++
/* $Id: scanner.re 663 2007-04-01 11:22:15Z helly $ */
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <iostream>
|
|
#include <sstream>
|
|
#include "scanner.h"
|
|
#include "parser.h"
|
|
#include "y.tab.h"
|
|
#include "globals.h"
|
|
#include "dfa.h"
|
|
|
|
extern YYSTYPE yylval;
|
|
|
|
#ifndef MAX
|
|
#define MAX(a,b) (((a)>(b))?(a):(b))
|
|
#endif
|
|
|
|
#define BSIZE 8192
|
|
|
|
#define YYCTYPE unsigned char
|
|
#define YYCURSOR cursor
|
|
#define YYLIMIT lim
|
|
#define YYMARKER ptr
|
|
#define YYFILL(n) {cursor = fill(cursor);}
|
|
|
|
#define RETURN(i) {cur = cursor; return i;}
|
|
|
|
namespace re2c
|
|
{
|
|
|
|
Scanner::Scanner(const char *fn, std::istream& i, std::ostream& o)
|
|
: in(i)
|
|
, out(o)
|
|
, bot(NULL), tok(NULL), ptr(NULL), cur(NULL), pos(NULL), lim(NULL)
|
|
, top(NULL), eof(NULL), tchar(0), tline(0), cline(1), iscfg(0), filename(fn)
|
|
{
|
|
;
|
|
}
|
|
|
|
char *Scanner::fill(char *cursor)
|
|
{
|
|
if(!eof)
|
|
{
|
|
uint cnt = tok - bot;
|
|
if(cnt)
|
|
{
|
|
memcpy(bot, tok, lim - tok);
|
|
tok = bot;
|
|
ptr -= cnt;
|
|
cursor -= cnt;
|
|
pos -= cnt;
|
|
lim -= cnt;
|
|
}
|
|
if((top - lim) < BSIZE)
|
|
{
|
|
char *buf = new char[(lim - bot) + BSIZE];
|
|
memcpy(buf, tok, lim - tok);
|
|
tok = buf;
|
|
ptr = &buf[ptr - bot];
|
|
cursor = &buf[cursor - bot];
|
|
pos = &buf[pos - bot];
|
|
lim = &buf[lim - bot];
|
|
top = &lim[BSIZE];
|
|
delete [] bot;
|
|
bot = buf;
|
|
}
|
|
in.read(lim, BSIZE);
|
|
if ((cnt = in.gcount()) != BSIZE )
|
|
{
|
|
eof = &lim[cnt]; *eof++ = '\0';
|
|
}
|
|
lim += cnt;
|
|
}
|
|
return cursor;
|
|
}
|
|
|
|
/*!re2c
|
|
zero = "\000";
|
|
any = [\000-\377];
|
|
dot = any \ [\n];
|
|
esc = dot \ [\\];
|
|
istring = "[" "^" ((esc \ [\]]) | "\\" dot)* "]" ;
|
|
cstring = "[" ((esc \ [\]]) | "\\" dot)* "]" ;
|
|
dstring = "\"" ((esc \ ["] ) | "\\" dot)* "\"";
|
|
sstring = "'" ((esc \ ['] ) | "\\" dot)* "'" ;
|
|
letter = [a-zA-Z];
|
|
digit = [0-9];
|
|
number = "0" | ("-"? [1-9] digit*);
|
|
name = (letter|"_") (letter|digit|"_")*;
|
|
cname = ":" name;
|
|
space = [ \t];
|
|
eol = ("\r\n" | "\n");
|
|
config = "re2c" cname+;
|
|
value = [^\r\n; \t]* | dstring | sstring;
|
|
*/
|
|
|
|
int Scanner::echo()
|
|
{
|
|
char *cursor = cur;
|
|
bool ignore_eoc = false;
|
|
int ignore_cnt = 0;
|
|
|
|
if (eof && cursor == eof) // Catch EOF
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
tok = cursor;
|
|
echo:
|
|
/*!re2c
|
|
"/*!re2c" {
|
|
if (bUsedYYMaxFill && bSinglePass) {
|
|
fatal("found scanner block after YYMAXFILL declaration");
|
|
}
|
|
out.write((const char*)(tok), (const char*)(&cursor[-7]) - (const char*)(tok));
|
|
tok = cursor;
|
|
RETURN(1);
|
|
}
|
|
"/*!max:re2c" {
|
|
if (bUsedYYMaxFill) {
|
|
fatal("cannot generate YYMAXFILL twice");
|
|
}
|
|
out << "#define YYMAXFILL " << maxFill << std::endl;
|
|
tok = pos = cursor;
|
|
ignore_eoc = true;
|
|
bUsedYYMaxFill = true;
|
|
goto echo;
|
|
}
|
|
"/*!getstate:re2c" {
|
|
tok = pos = cursor;
|
|
genGetState(out, topIndent, 0);
|
|
ignore_eoc = true;
|
|
goto echo;
|
|
}
|
|
"/*!ignore:re2c" {
|
|
tok = pos = cursor;
|
|
ignore_eoc = true;
|
|
goto echo;
|
|
}
|
|
"*" "/" "\r"? "\n" {
|
|
cline++;
|
|
if (ignore_eoc) {
|
|
if (ignore_cnt) {
|
|
out << sourceFileInfo;
|
|
}
|
|
ignore_eoc = false;
|
|
ignore_cnt = 0;
|
|
} else {
|
|
out.write((const char*)(tok), (const char*)(cursor) - (const char*)(tok));
|
|
}
|
|
tok = pos = cursor;
|
|
goto echo;
|
|
}
|
|
"*" "/" {
|
|
if (ignore_eoc) {
|
|
if (ignore_cnt) {
|
|
out << "\n" << sourceFileInfo;
|
|
}
|
|
ignore_eoc = false;
|
|
ignore_cnt = 0;
|
|
} else {
|
|
out.write((const char*)(tok), (const char*)(cursor) - (const char*)(tok));
|
|
}
|
|
tok = pos = cursor;
|
|
goto echo;
|
|
}
|
|
"\n" {
|
|
if (ignore_eoc) {
|
|
ignore_cnt++;
|
|
} else {
|
|
out.write((const char*)(tok), (const char*)(cursor) - (const char*)(tok));
|
|
}
|
|
tok = pos = cursor; cline++;
|
|
goto echo;
|
|
}
|
|
zero {
|
|
if (!ignore_eoc) {
|
|
out.write((const char*)(tok), (const char*)(cursor) - (const char*)(tok) - 1); // -1 so we don't write out the \0
|
|
}
|
|
if(cursor == eof) {
|
|
RETURN(0);
|
|
}
|
|
}
|
|
any {
|
|
goto echo;
|
|
}
|
|
*/
|
|
}
|
|
|
|
|
|
int Scanner::scan()
|
|
{
|
|
char *cursor = cur;
|
|
uint depth;
|
|
|
|
scan:
|
|
tchar = cursor - pos;
|
|
tline = cline;
|
|
tok = cursor;
|
|
if (iscfg == 1)
|
|
{
|
|
goto config;
|
|
}
|
|
else if (iscfg == 2)
|
|
{
|
|
goto value;
|
|
}
|
|
/*!re2c
|
|
"{" { depth = 1;
|
|
goto code;
|
|
}
|
|
"/*" { depth = 1;
|
|
goto comment; }
|
|
|
|
"*/" { tok = cursor;
|
|
RETURN(0); }
|
|
|
|
dstring { cur = cursor;
|
|
yylval.regexp = strToRE(token());
|
|
return STRING; }
|
|
|
|
sstring { cur = cursor;
|
|
yylval.regexp = strToCaseInsensitiveRE(token());
|
|
return STRING; }
|
|
|
|
"\"" { fatal("unterminated string constant (missing \")"); }
|
|
"'" { fatal("unterminated string constant (missing ')"); }
|
|
|
|
istring { cur = cursor;
|
|
yylval.regexp = invToRE(token());
|
|
return RANGE; }
|
|
|
|
cstring { cur = cursor;
|
|
yylval.regexp = ranToRE(token());
|
|
return RANGE; }
|
|
|
|
"[" { fatal("unterminated range (missing ])"); }
|
|
|
|
[()|=;/\\] { RETURN(*tok); }
|
|
|
|
[*+?] { yylval.op = *tok;
|
|
RETURN(CLOSE); }
|
|
|
|
"{0,}" { yylval.op = '*';
|
|
RETURN(CLOSE); }
|
|
|
|
"{" [0-9]+ "}" { yylval.extop.minsize = atoi((char *)tok+1);
|
|
yylval.extop.maxsize = atoi((char *)tok+1);
|
|
RETURN(CLOSESIZE); }
|
|
|
|
"{" [0-9]+ "," [0-9]+ "}" { yylval.extop.minsize = atoi((char *)tok+1);
|
|
yylval.extop.maxsize = MAX(yylval.extop.minsize,atoi(strchr((char *)tok, ',')+1));
|
|
RETURN(CLOSESIZE); }
|
|
|
|
"{" [0-9]+ ",}" { yylval.extop.minsize = atoi((char *)tok+1);
|
|
yylval.extop.maxsize = -1;
|
|
RETURN(CLOSESIZE); }
|
|
|
|
"{" [0-9]* "," { fatal("illegal closure form, use '{n}', '{n,}', '{n,m}' where n and m are numbers"); }
|
|
|
|
config { cur = cursor;
|
|
tok+= 5; /* skip "re2c:" */
|
|
iscfg = 1;
|
|
yylval.str = new Str(token());
|
|
return CONFIG;
|
|
}
|
|
|
|
name { cur = cursor;
|
|
yylval.symbol = Symbol::find(token());
|
|
return ID; }
|
|
|
|
"." { cur = cursor;
|
|
yylval.regexp = mkDot();
|
|
return RANGE;
|
|
}
|
|
|
|
space+ { goto scan; }
|
|
|
|
eol { if(cursor == eof) RETURN(0);
|
|
pos = cursor; cline++;
|
|
goto scan;
|
|
}
|
|
|
|
any { std::ostringstream msg;
|
|
msg << "unexpected character: ";
|
|
prtChOrHex(msg, *tok);
|
|
fatal(msg.str().c_str());
|
|
goto scan;
|
|
}
|
|
*/
|
|
|
|
code:
|
|
/*!re2c
|
|
"}" { if(--depth == 0){
|
|
cur = cursor;
|
|
yylval.token = new Token(token(), tline);
|
|
return CODE;
|
|
}
|
|
goto code; }
|
|
"{" { ++depth;
|
|
goto code; }
|
|
"\n" { if(cursor == eof) fatal("missing '}'");
|
|
pos = cursor; cline++;
|
|
goto code;
|
|
}
|
|
zero { if(cursor == eof) {
|
|
if (depth) fatal("missing '}'");
|
|
RETURN(0);
|
|
}
|
|
goto code;
|
|
}
|
|
dstring | sstring | any { goto code; }
|
|
*/
|
|
|
|
comment:
|
|
/*!re2c
|
|
"*/" { if(--depth == 0)
|
|
goto scan;
|
|
else
|
|
goto comment; }
|
|
"/*" { ++depth;
|
|
fatal("ambiguous /* found");
|
|
goto comment; }
|
|
"\n" { if(cursor == eof) RETURN(0);
|
|
tok = pos = cursor; cline++;
|
|
goto comment;
|
|
}
|
|
any { if(cursor == eof) RETURN(0);
|
|
goto comment; }
|
|
*/
|
|
|
|
config:
|
|
/*!re2c
|
|
space+ { goto config; }
|
|
"=" space* { iscfg = 2;
|
|
cur = cursor;
|
|
RETURN('=');
|
|
}
|
|
any { fatal("missing '='"); }
|
|
*/
|
|
|
|
value:
|
|
/*!re2c
|
|
number { cur = cursor;
|
|
yylval.number = atoi(token().to_string().c_str());
|
|
iscfg = 0;
|
|
return NUMBER;
|
|
}
|
|
value { cur = cursor;
|
|
yylval.str = new Str(token());
|
|
iscfg = 0;
|
|
return VALUE;
|
|
}
|
|
*/
|
|
}
|
|
|
|
void Scanner::fatal(uint ofs, const char *msg) const
|
|
{
|
|
out.flush();
|
|
#ifdef _MSC_VER
|
|
std::cerr << filename << "(" << tline << "): error : "
|
|
<< "column " << (tchar + ofs + 1) << ": "
|
|
<< msg << std::endl;
|
|
#else
|
|
std::cerr << "re2c: error: "
|
|
<< "line " << tline << ", column " << (tchar + ofs + 1) << ": "
|
|
<< msg << std::endl;
|
|
#endif
|
|
exit(1);
|
|
}
|
|
|
|
Scanner::~Scanner()
|
|
{
|
|
if (bot)
|
|
{
|
|
delete [] bot;
|
|
}
|
|
}
|
|
|
|
} // end namespace re2c
|
|
|