3 Routines for compiling Flash2 AVM2 ABC Actionscript
5 Extension module for the rfxswf library.
6 Part of the swftools package.
8 Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
31 #include "tokenizer.h"
34 static void countlines(char*text, int len) {
46 static int verbose = 1;
47 static void dbg(const char*format, ...)
54 va_start(arglist, format);
55 vsprintf(buf, format, arglist);
58 while(l && buf[l-1]=='\n') {
62 printf("(tokenizer) ");
67 void syntaxerror(const char*format, ...)
74 va_start(arglist, format);
75 vsprintf(buf, format, arglist);
77 fprintf(stderr, "%s:%d:%d: error: %s\n", current_filename_short, current_line, current_column, buf);
81 void warning(const char*format, ...)
88 va_start(arglist, format);
89 vsprintf(buf, format, arglist);
91 fprintf(stderr, "%s:%d:%d: warning: %s\n", current_filename_short, current_line, current_column, buf);
96 #ifndef YY_CURRENT_BUFFER
97 #define YY_CURRENT_BUFFER yy_current_buffer
100 void handleInclude(char*text, int len, char quotes)
104 char*p1 = strchr(text, '"');
105 char*p2 = strrchr(text, '"');
106 if(!p1 || !p2 || p1==p2) {
107 syntaxerror("Invalid include in line %d\n", current_line);
110 filename = strdup(p1+1);
114 while(!strchr(" \n\r\t", text[i1])) i1++;
116 while(strchr(" \n\r\t", text[i1])) i1++;
117 while(strchr(" \n\r\t", text[i2-1])) i2--;
118 if(i2!=len) text[i2]=0;
119 filename = strdup(&text[i1]);
122 char*fullfilename = enter_file(filename, YY_CURRENT_BUFFER);
123 yyin = fopen(fullfilename, "rb");
125 syntaxerror("Couldn't open include file \"%s\"\n", fullfilename);
128 yy_switch_to_buffer(yy_create_buffer( yyin, YY_BUF_SIZE ) );
129 //BEGIN(INITIAL); keep context
132 string_t string_unescape(const char*in, int l)
136 const char*end = &in[l];
137 char*n = (char*)malloc(l);
146 if(s==end) syntaxerror("invalid \\ at end of string");
148 /* handle the various line endings (mac, dos, unix) */
161 case '\\': o[len++] = '\\';s++; break;
162 case '"': o[len++] = '"';s++; break;
163 case 'b': o[len++] = '\b';s++; break;
164 case 'f': o[len++] = '\f';s++; break;
165 case 'n': o[len++] = '\n';s++; break;
166 case 'r': o[len++] = '\r';s++; break;
167 case 't': o[len++] = '\t';s++; break;
168 case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': {
171 while(strchr("01234567", *s) && nr<3 && s<end) {
178 syntaxerror("octal number out of range (0-255): %d", num);
182 case 'x': case 'u': {
191 if(s==end) syntaxerror("invalid \\u or \\x at end of string");
194 if(s==end) syntaxerror("invalid \\u{ at end of string");
199 while(strchr("0123456789abcdefABCDEF", *s) && (bracket || nr < max) && s<end) {
201 if(*s>='0' && *s<='9') num |= *s - '0';
202 if(*s>='a' && *s<='f') num |= *s - 'a' + 10;
203 if(*s>='A' && *s<='F') num |= *s - 'A' + 10;
208 if(*s=='}' && s<end) {
211 syntaxerror("missing terminating '}'");
215 char*utf8 = getUTF8(num);
221 syntaxerror("byte out of range (0-255): %d", num);
227 syntaxerror("unknown escape sequence: \"\\%c\"", *s);
230 string_t out = string_new(n, len);
235 static void handleString(char*s, int len)
238 if(s[len-1]!='"') syntaxerror("String doesn't end with '\"'");
241 else if(s[0]=='\'') {
242 if(s[len-1]!='\'') syntaxerror("String doesn't end with '\"'");
245 else syntaxerror("String incorrectly terminated");
248 avm2_lval.str = string_unescape(s, len);
252 char start_of_expression;
254 static inline int mkid(int type)
256 char*s = malloc(yyleng+1);
257 memcpy(s, yytext, yyleng);
263 static inline int m(int type)
265 avm2_lval.token = type;
270 static char numberbuf[64];
271 static inline int handlenumber()
273 if(yyleng>sizeof(numberbuf)-1)
274 syntaxerror("decimal number overflow");
277 memcpy(s, yytext, yyleng);
282 for(t=0;t<yyleng;t++) {
285 syntaxerror("Invalid number");
287 } else if(!strchr("-0123456789", yytext[t])) {
288 syntaxerror("Invalid number");
292 avm2_lval.number_float = atof(s);
295 char l = (yytext[0]=='-');
297 char*max = l?"1073741824":"2147483647";
299 syntaxerror("integer overflow");
302 for(t=0;t<yyleng-l;t++) {
303 if(yytext[l+t]>max[t])
304 syntaxerror("integer overflow %s > %s", s+l,max);
305 else if(yytext[l+t]<max[t])
311 avm2_lval.number_int = v;
320 for(t=0;t<yyleng;t++) {
324 avm2_lval.number_uint = v;
334 void initialize_scanner();
335 #define YY_USER_INIT initialize_scanner();
337 #define c() {countlines(yytext, yyleng);}
339 //Boolean {c();return m(KW_BOOLEAN);}
340 //int {c();return m(KW_INT);}
341 //uint {c();return m(KW_UINT);}
342 //Number {c();return m(KW_NUMBER);}
348 NAME [a-zA-Z_][a-zA-Z0-9_\\]*
350 NUMBER [0-9]+(\.[0-9]*)?|-?\.[0-9]+
351 NUMBERWITHSIGN [+-]?({NUMBER})
353 STRING ["](\\[\x00-\xff]|[^\\"\n])*["]|['](\\[\x00-\xff]|[^\\'\n])*[']
355 MULTILINE_COMMENT [/][*]+([*][^/]|[^/*]|[^*][/]|[\x00-\x1f])*[*]+[/]
356 SINGLELINE_COMMENT \/\/[^\n]*\n
357 REGEXP [/]([^/\n]|\\[/])*[/][a-zA-Z]*
361 {SINGLELINE_COMMENT} {c(); /* single line comment */}
362 {MULTILINE_COMMENT} {c(); /* multi line comment */}
363 [/][*] {syntaxerror("syntax error: unterminated comment", yytext);}
365 ^include{S}+{STRING}{S}*/\n {c();handleInclude(yytext, yyleng, 1);}
366 ^include{S}+[^" \t\r\n][\x20-\xff]*{S}*/\n {c();handleInclude(yytext, yyleng, 0);}
367 {STRING} {c(); BEGIN(INITIAL);handleString(yytext, yyleng);return T_STRING;}
369 <BEGINNING,REGEXPOK>{
370 {REGEXP} {c(); BEGIN(INITIAL);return m(T_REGEXP);}
371 {NUMBERWITHSIGN} {c(); BEGIN(INITIAL);return handlenumber();}
374 \xef\xbb\xbf {/* utf 8 bom */}
377 {NUMBER} {c(); BEGIN(INITIAL);return handlenumber();}
379 3rr0r {/* for debugging: generates a tokenizer-level error */
380 syntaxerror("3rr0r");}
382 [&][&] {c();BEGIN(REGEXPOK);return m(T_ANDAND);}
383 [|][|] {c();BEGIN(REGEXPOK);return m(T_OROR);}
384 [!][=] {c();BEGIN(REGEXPOK);return m(T_NE);}
385 [!][=][=] {c();BEGIN(REGEXPOK);return m(T_NEE);}
386 [=][=][=] {c();BEGIN(REGEXPOK);return m(T_EQEQEQ);}
387 [=][=] {c();BEGIN(REGEXPOK);return m(T_EQEQ);}
388 [>][=] {c();return m(T_GE);}
389 [<][=] {c();return m(T_LE);}
390 [-][-] {c();BEGIN(INITIAL);return m(T_MINUSMINUS);}
391 [+][+] {c();BEGIN(INITIAL);return m(T_PLUSPLUS);}
392 [+][=] {c();return m(T_PLUSBY);}
393 [-][=] {c();return m(T_MINUSBY);}
394 [/][=] {c();return m(T_DIVBY);}
395 [%][=] {c();return m(T_MODBY);}
396 [*][=] {c();return m(T_MULBY);}
397 [>][>][=] {c();return m(T_SHRBY);}
398 [<][<][=] {c();return m(T_SHLBY);}
399 [>][>][>][=] {c();return m(T_USHRBY);}
400 [<][<] {c();return m(T_SHL);}
401 [>][>][>] {c();return m(T_USHR);}
402 [>][>] {c();return m(T_SHR);}
403 \.\.\. {c();return m(T_DOTDOTDOT);}
404 \.\. {c();return m(T_DOTDOT);}
405 \. {c();return m('.');}
406 :: {c();return m(T_COLONCOLON);}
407 : {c();return m(':');}
408 implements {c();return m(KW_IMPLEMENTS);}
409 interface {c();return m(KW_INTERFACE);}
410 namespace {c();return m(KW_NAMESPACE);}
411 protected {c();return m(KW_PROTECTED);}
412 override {c();return m(KW_OVERRIDE);}
413 internal {c();return m(KW_INTERNAL);}
414 function {c();return m(KW_FUNCTION);}
415 package {c();return m(KW_PACKAGE);}
416 private {c();return m(KW_PRIVATE);}
417 dynamic {c();return m(KW_DYNAMIC);}
418 extends {c();return m(KW_EXTENDS);}
419 delete {c();return m(KW_DELETE);}
420 return {c();return m(KW_RETURN);}
421 public {c();return m(KW_PUBLIC);}
422 native {c();return m(KW_NATIVE);}
423 static {c();return m(KW_STATIC);}
424 import {c();return m(KW_IMPORT);}
425 while {c();return m(KW_WHILE);}
426 class {c();return m(KW_CLASS);}
427 const {c();return m(KW_CONST);}
428 final {c();return m(KW_FINAL);}
429 false {c();return m(KW_FALSE);}
430 break {c();return m(KW_BREAK);}
431 true {c();return m(KW_TRUE);}
432 null {c();return m(KW_NULL);}
433 else {c();return m(KW_ELSE);}
434 use {c();return m(KW_USE);}
435 new {c();return m(KW_NEW);}
436 get {c();return m(KW_GET);}
437 for {c();return m(KW_FOR);}
438 set {c();return m(KW_SET);}
439 var {c();return m(KW_VAR);}
440 is {c();return m(KW_IS) ;}
441 if {c();return m(KW_IF) ;}
442 as {c();return m(KW_AS);}
443 {NAME} {c();BEGIN(INITIAL);return mkid(T_IDENTIFIER);}
445 [+-\/*^~@$!%&\(=\[\]\{\}|?:;,<>] {c();BEGIN(REGEXPOK);return m(yytext[0]);}
446 [\)\]] {c();BEGIN(INITIAL);return m(yytext[0]);}
448 . {char c1=yytext[0];
453 char c = buf[t]=input();
454 if(c=='\n' || c==EOF) {
459 if(c1>='0' && c1<='9')
460 syntaxerror("syntax error: %s (identifiers must not start with a digit)");
462 syntaxerror("syntax error: %s", buf);
468 void*b = leave_file();
471 yy_delete_buffer(YY_CURRENT_BUFFER);
474 yy_delete_buffer(YY_CURRENT_BUFFER);
475 yy_switch_to_buffer(b);
486 static char mbuf[256];
487 char*token2string(enum yytokentype nr, YYSTYPE v)
489 if(nr==T_STRING) return "<string>";
490 else if(nr==T_INT) return "<int>";
491 else if(nr==T_UINT) return "<uint>";
492 else if(nr==T_BYTE) return "<byte>";
493 else if(nr==T_FLOAT) return "<float>";
494 else if(nr==T_REGEXP) return "REGEXP";
495 else if(nr==T_EOF) return "***END***";
496 else if(nr==T_GE) return ">=";
497 else if(nr==T_LE) return "<=";
498 else if(nr==T_MINUSMINUS) return "--";
499 else if(nr==T_PLUSPLUS) return "++";
500 else if(nr==KW_IMPLEMENTS) return "implements";
501 else if(nr==KW_INTERFACE) return "interface";
502 else if(nr==KW_NAMESPACE) return "namespace";
503 else if(nr==KW_PROTECTED) return "protected";
504 else if(nr==KW_OVERRIDE) return "override";
505 else if(nr==KW_INTERNAL) return "internal";
506 else if(nr==KW_FUNCTION) return "function";
507 else if(nr==KW_PACKAGE) return "package";
508 else if(nr==KW_PRIVATE) return "private";
509 else if(nr==KW_BOOLEAN) return "Boolean";
510 else if(nr==KW_DYNAMIC) return "dynamic";
511 else if(nr==KW_EXTENDS) return "extends";
512 else if(nr==KW_PUBLIC) return "public";
513 else if(nr==KW_NATIVE) return "native";
514 else if(nr==KW_STATIC) return "static";
515 else if(nr==KW_IMPORT) return "import";
516 else if(nr==KW_NUMBER) return "number";
517 else if(nr==KW_CLASS) return "class";
518 else if(nr==KW_CONST) return "const";
519 else if(nr==KW_FINAL) return "final";
520 else if(nr==KW_FALSE) return "False";
521 else if(nr==KW_TRUE) return "True";
522 else if(nr==KW_UINT) return "uint";
523 else if(nr==KW_NULL) return "null";
524 else if(nr==KW_ELSE) return "else";
525 else if(nr==KW_USE) return "use";
526 else if(nr==KW_INT) return "int";
527 else if(nr==KW_NEW) return "new";
528 else if(nr==KW_GET) return "get";
529 else if(nr==KW_FOR) return "for";
530 else if(nr==KW_SET) return "set";
531 else if(nr==KW_VAR) return "var";
532 else if(nr==KW_IS) return "is";
533 else if(nr==KW_AS) return "as";
534 else if(nr==T_IDENTIFIER) return "ID";
536 sprintf(mbuf, "%d", nr);
541 void initialize_scanner()