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 static void handleString(char*s, int len)
135 if(s[len-1]!='"') syntaxerror("String doesn't end with '\"'");
138 else if(s[0]=='\'') {
139 if(s[len-1]!='\'') syntaxerror("String doesn't end with '\"'");
142 else syntaxerror("String incorrectly terminated");
144 avm2_lval.string = s;
148 char start_of_expression;
150 static inline int m(int type)
152 char*s = malloc(yyleng+1);
153 memcpy(s, yytext, yyleng);
163 static char numberbuf[64];
164 static inline int handlenumber()
166 if(yyleng>sizeof(numberbuf)-1)
167 syntaxerror("decimal number overflow");
170 memcpy(s, yytext, yyleng);
175 for(t=0;t<yyleng;t++) {
178 syntaxerror("Invalid number");
180 } else if(!strchr("-0123456789", yytext[t])) {
181 syntaxerror("Invalid number");
185 avm2_lval.number_float = atof(s);
188 char l = (yytext[0]=='-');
190 char*max = l?"1073741824":"2147483647";
192 syntaxerror("integer overflow");
195 for(t=0;t<yyleng-l;t++) {
196 if(yytext[l+t]>max[t])
197 syntaxerror("integer overflow %s > %s", s+l,max);
198 else if(yytext[l+t]<max[t])
204 avm2_lval.number_int = v;
213 for(t=0;t<yyleng;t++) {
217 avm2_lval.number_uint = v;
227 void initialize_scanner();
228 #define YY_USER_INIT initialize_scanner();
230 #define c() {countlines(yytext, yyleng);}
237 NAME [a-zA-Z_][a-zA-Z0-9_\\]*
239 NUMBER -?[0-9]+(\.[0-9]*)?
241 STRING ["](\\[\x00-\xff]|[^\\"\n])*["]|['](\\[\x00-\xff]|[^\\'\n])*[']
243 MULTILINE_COMMENT [/][*]+([*][^/]|[^/*]|[^*][/]|[\x00-\x1f])*[*]+[/]
244 SINGLELINE_COMMENT \/\/[^\n]*\n
245 REGEXP [/]([^/\n]|\\[/])*[/][a-zA-Z]*
249 {SINGLELINE_COMMENT} {c(); /* single line comment */}
250 {MULTILINE_COMMENT} {c(); /* multi line comment */}
251 [/][*] {syntaxerror("syntax error: unterminated comment", yytext);}
253 ^include{S}+{STRING}{S}*/\n {c();handleInclude(yytext, yyleng, 1);}
254 ^include{S}+[^" \t\r\n][\x20-\xff]*{S}*/\n {c();handleInclude(yytext, yyleng, 0);}
255 {STRING} {c(); BEGIN(INITIAL);handleString(yytext, yyleng);return T_STRING;}
257 <BEGINNING,REGEXPOK>{
258 {REGEXP} {c(); BEGIN(INITIAL);return m(T_REGEXP);}
261 \xef\xbb\xbf {/* utf 8 bom */}
264 {NUMBER} {c(); BEGIN(INITIAL);return handlenumber();}
266 3rr0r {/* for debugging: generates a tokenizer-level error */
267 syntaxerror("3rr0r");}
269 [&][&] {c();BEGIN(REGEXPOK);return m(T_ANDAND);}
270 [|][|] {c();BEGIN(REGEXPOK);return m(T_OROR);}
271 [!][=] {c();BEGIN(REGEXPOK);return m(T_NE);}
272 [=][=][=] {c();BEGIN(REGEXPOK);return m(T_EQEQEQ);}
273 [=][=] {c();BEGIN(REGEXPOK);return m(T_EQEQ);}
274 [>][=] {c();return m(T_GE);}
275 [<][=] {c();return m(T_LE);}
276 [-][-] {c();BEGIN(INITIAL);return m(T_MINUSMINUS);}
277 [+][+] {c();BEGIN(INITIAL);return m(T_PLUSPLUS);}
278 [+][=] {c();return m(T_PLUSBY);}
279 [-][=] {c();return m(T_MINUSBY);}
280 [/][=] {c();return m(T_DIVBY);}
281 [%][=] {c();return m(T_MODBY);}
282 [*][=] {c();return m(T_MULBY);}
283 [>][>][=] {c();return m(T_SHRBY);}
284 [<][<][=] {c();return m(T_SHLBY);}
285 [>][>][>][=] {c();return m(T_USHRBY);}
286 [<][<] {c();return m(T_SHL);}
287 [>][>][>] {c();return m(T_USHR);}
288 [>][>] {c();return m(T_SHR);}
289 \.\.\. {c();return m(T_DOTDOTDOT);}
290 \.\. {c();return m(T_DOTDOT);}
291 \. {c();return m('.');}
292 :: {c();return m(T_COLONCOLON);}
293 : {c();return m(':');}
294 implements {c();return m(KW_IMPLEMENTS);}
295 interface {c();return m(KW_INTERFACE);}
296 namespace {c();return m(KW_NAMESPACE);}
297 protected {c();return m(KW_PROTECTED);}
298 override {c();return m(KW_OVERRIDE);}
299 internal {c();return m(KW_INTERNAL);}
300 function {c();return m(KW_FUNCTION);}
301 package {c();return m(KW_PACKAGE);}
302 private {c();return m(KW_PRIVATE);}
303 Boolean {c();return m(KW_BOOLEAN);}
304 dynamic {c();return m(KW_DYNAMIC);}
305 extends {c();return m(KW_EXTENDS);}
306 return {c();return m(KW_RETURN);}
307 public {c();return m(KW_PUBLIC);}
308 native {c();return m(KW_NATIVE);}
309 static {c();return m(KW_STATIC);}
310 import {c();return m(KW_IMPORT);}
311 Number {c();return m(KW_NUMBER);}
312 while {c();return m(KW_WHILE);}
313 class {c();return m(KW_CLASS);}
314 const {c();return m(KW_CONST);}
315 final {c();return m(KW_FINAL);}
316 false {c();return m(KW_FALSE);}
317 break {c();return m(KW_BREAK);}
318 true {c();return m(KW_TRUE);}
319 uint {c();return m(KW_UINT);}
320 null {c();return m(KW_NULL);}
321 else {c();return m(KW_ELSE);}
322 use {c();return m(KW_USE);}
323 int {c();return m(KW_INT);}
324 new {c();return m(KW_NEW);}
325 get {c();return m(KW_GET);}
326 for {c();return m(KW_FOR);}
327 set {c();return m(KW_SET);}
328 var {c();return m(KW_VAR);}
329 is {c();return m(KW_IS) ;}
330 if {c();return m(KW_IF) ;}
331 as {c();return m(KW_AS);}
332 {NAME} {c();BEGIN(INITIAL);return m(T_IDENTIFIER);}
334 [+-\/*^~@$!%&\(=\[\]\{\}|?:;,.<>] {c();BEGIN(REGEXPOK);return m(yytext[0]);}
335 [\)\]] {c();BEGIN(INITIAL);return m(yytext[0]);}
337 . {char c1=yytext[0];
342 char c = buf[t]=input();
343 if(c=='\n' || c==EOF) {
348 if(c1>='0' && c1<='9')
349 syntaxerror("syntax error: %s (identifiers must not start with a digit)");
351 syntaxerror("syntax error: %s", buf);
357 void*b = leave_file();
360 yy_delete_buffer(YY_CURRENT_BUFFER);
363 yy_delete_buffer(YY_CURRENT_BUFFER);
364 yy_switch_to_buffer(b);
375 static char mbuf[256];
376 char*token2string(token_t*t)
379 if(nr==T_STRING) return "<string>";
380 else if(nr==T_INT) return "<int>";
381 else if(nr==T_UINT) return "<uint>";
382 else if(nr==T_FLOAT) return "<float>";
383 else if(nr==T_REGEXP) return "REGEXP";
384 else if(nr==T_EOF) return "***END***";
385 else if(nr==T_GE) return ">=";
386 else if(nr==T_LE) return "<=";
387 else if(nr==T_MINUSMINUS) return "--";
388 else if(nr==T_PLUSPLUS) return "++";
389 else if(nr==KW_IMPLEMENTS) return "implements";
390 else if(nr==KW_INTERFACE) return "interface";
391 else if(nr==KW_NAMESPACE) return "namespace";
392 else if(nr==KW_PROTECTED) return "protected";
393 else if(nr==KW_OVERRIDE) return "override";
394 else if(nr==KW_INTERNAL) return "internal";
395 else if(nr==KW_FUNCTION) return "function";
396 else if(nr==KW_PACKAGE) return "package";
397 else if(nr==KW_PRIVATE) return "private";
398 else if(nr==KW_BOOLEAN) return "Boolean";
399 else if(nr==KW_DYNAMIC) return "dynamic";
400 else if(nr==KW_EXTENDS) return "extends";
401 else if(nr==KW_PUBLIC) return "public";
402 else if(nr==KW_NATIVE) return "native";
403 else if(nr==KW_STATIC) return "static";
404 else if(nr==KW_IMPORT) return "import";
405 else if(nr==KW_NUMBER) return "number";
406 else if(nr==KW_CLASS) return "class";
407 else if(nr==KW_CONST) return "const";
408 else if(nr==KW_FINAL) return "final";
409 else if(nr==KW_FALSE) return "False";
410 else if(nr==KW_TRUE) return "True";
411 else if(nr==KW_UINT) return "uint";
412 else if(nr==KW_NULL) return "null";
413 else if(nr==KW_ELSE) return "else";
414 else if(nr==KW_USE) return "use";
415 else if(nr==KW_INT) return "int";
416 else if(nr==KW_NEW) return "new";
417 else if(nr==KW_GET) return "get";
418 else if(nr==KW_FOR) return "for";
419 else if(nr==KW_SET) return "set";
420 else if(nr==KW_VAR) return "var";
421 else if(nr==KW_IS) return "is";
422 else if(nr==KW_AS) return "as";
423 else if(nr==T_IDENTIFIER) {
424 if(strlen(t->text)>sizeof(mbuf)-1)
426 sprintf(mbuf, "ID(%s)", t->text);
429 sprintf(mbuf, "%d", nr);
434 void initialize_scanner()