/[jscoverage]/trunk/instrument-js.cpp
ViewVC logotype

Annotation of /trunk/instrument-js.cpp

Parent Directory Parent Directory | Revision Log Revision Log


Revision 390 - (hide annotations)
Thu Oct 30 17:53:39 2008 UTC (10 years, 5 months ago) by siliconforks
Original Path: trunk/instrument-js.c
File MIME type: text/plain
File size: 54396 byte(s)
Add support for negative zero.
1 siliconforks 2 /*
2     instrument-js.c - JavaScript instrumentation routines
3 siliconforks 87 Copyright (C) 2007, 2008 siliconforks.com
4 siliconforks 2
5     This program is free software; you can redistribute it and/or modify
6     it under the terms of the GNU General Public License as published by
7     the Free Software Foundation; either version 2 of the License, or
8     (at your option) any later version.
9    
10     This program is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13     GNU General Public License for more details.
14    
15     You should have received a copy of the GNU General Public License along
16     with this program; if not, write to the Free Software Foundation, Inc.,
17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18     */
19    
20 siliconforks 116 #include <config.h>
21    
22 siliconforks 2 #include "instrument-js.h"
23    
24     #include <assert.h>
25 siliconforks 389 #include <math.h>
26 siliconforks 2 #include <stdlib.h>
27     #include <string.h>
28    
29     #include <jsapi.h>
30 siliconforks 336 #include <jsarena.h>
31 siliconforks 2 #include <jsatom.h>
32 siliconforks 351 #include <jsemit.h>
33 siliconforks 284 #include <jsexn.h>
34 siliconforks 2 #include <jsfun.h>
35     #include <jsinterp.h>
36 siliconforks 339 #include <jsiter.h>
37 siliconforks 2 #include <jsparse.h>
38     #include <jsregexp.h>
39     #include <jsscope.h>
40     #include <jsstr.h>
41    
42 siliconforks 174 #include "encoding.h"
43 siliconforks 179 #include "global.h"
44     #include "highlight.h"
45 siliconforks 116 #include "resource-manager.h"
46 siliconforks 2 #include "util.h"
47    
48 siliconforks 240 struct IfDirective {
49     const jschar * condition_start;
50     const jschar * condition_end;
51     uint16_t start_line;
52     uint16_t end_line;
53     struct IfDirective * next;
54     };
55    
56 siliconforks 361 bool jscoverage_mozilla = false;
57    
58 siliconforks 240 static bool * exclusive_directives = NULL;
59    
60 siliconforks 2 static JSRuntime * runtime = NULL;
61     static JSContext * context = NULL;
62     static JSObject * global = NULL;
63 siliconforks 339 static JSVersion js_version = JSVERSION_ECMA_3;
64 siliconforks 2
65     /*
66     JSParseNode objects store line numbers starting from 1.
67     The lines array stores line numbers starting from 0.
68     */
69     static const char * file_id = NULL;
70     static char * lines = NULL;
71 siliconforks 214 static uint16_t num_lines = 0;
72 siliconforks 2
73 siliconforks 339 void jscoverage_set_js_version(const char * version) {
74 siliconforks 369 js_version = JS_StringToVersion(version);
75     if (js_version != JSVERSION_UNKNOWN) {
76     return;
77     }
78    
79     char * end;
80     js_version = (JSVersion) strtol(version, &end, 10);
81 siliconforks 370 if ((size_t) (end - version) != strlen(version)) {
82 siliconforks 369 fatal("invalid version: %s", version);
83     }
84 siliconforks 339 }
85    
86 siliconforks 2 void jscoverage_init(void) {
87     runtime = JS_NewRuntime(8L * 1024L * 1024L);
88     if (runtime == NULL) {
89     fatal("cannot create runtime");
90     }
91    
92     context = JS_NewContext(runtime, 8192);
93     if (context == NULL) {
94     fatal("cannot create context");
95     }
96    
97 siliconforks 339 JS_SetVersion(context, js_version);
98    
99 siliconforks 2 global = JS_NewObject(context, NULL, NULL, NULL);
100     if (global == NULL) {
101     fatal("cannot create global object");
102     }
103    
104     if (! JS_InitStandardClasses(context, global)) {
105     fatal("cannot initialize standard classes");
106     }
107     }
108    
109     void jscoverage_cleanup(void) {
110     JS_DestroyContext(context);
111     JS_DestroyRuntime(runtime);
112     }
113    
114 siliconforks 246 static void print_javascript(const jschar * characters, size_t num_characters, Stream * f) {
115     for (size_t i = 0; i < num_characters; i++) {
116     jschar c = characters[i];
117     /*
118     XXX does not handle no-break space, other unicode "space separator"
119     */
120     switch (c) {
121     case 0x9:
122     case 0xB:
123     case 0xC:
124     Stream_write_char(f, c);
125     break;
126     default:
127     if (32 <= c && c <= 126) {
128     Stream_write_char(f, c);
129     }
130     else {
131     Stream_printf(f, "\\u%04x", c);
132     }
133     break;
134     }
135     }
136     }
137    
138 siliconforks 92 static void print_string(JSString * s, Stream * f) {
139 siliconforks 174 size_t length = JSSTRING_LENGTH(s);
140     jschar * characters = JSSTRING_CHARS(s);
141     for (size_t i = 0; i < length; i++) {
142     jschar c = characters[i];
143     if (32 <= c && c <= 126) {
144     switch (c) {
145     case '"':
146     Stream_write_string(f, "\\\"");
147     break;
148     /*
149     case '\'':
150     Stream_write_string(f, "\\'");
151     break;
152     */
153     case '\\':
154     Stream_write_string(f, "\\\\");
155     break;
156     default:
157     Stream_write_char(f, c);
158     break;
159     }
160     }
161     else {
162     switch (c) {
163     case 0x8:
164     Stream_write_string(f, "\\b");
165     break;
166     case 0x9:
167     Stream_write_string(f, "\\t");
168     break;
169     case 0xa:
170     Stream_write_string(f, "\\n");
171     break;
172 siliconforks 317 /* IE doesn't support this */
173     /*
174 siliconforks 174 case 0xb:
175     Stream_write_string(f, "\\v");
176     break;
177 siliconforks 317 */
178 siliconforks 174 case 0xc:
179     Stream_write_string(f, "\\f");
180     break;
181     case 0xd:
182     Stream_write_string(f, "\\r");
183     break;
184     default:
185     Stream_printf(f, "\\u%04x", c);
186     break;
187     }
188     }
189 siliconforks 2 }
190     }
191    
192 siliconforks 92 static void print_string_atom(JSAtom * atom, Stream * f) {
193 siliconforks 2 assert(ATOM_IS_STRING(atom));
194     JSString * s = ATOM_TO_STRING(atom);
195     print_string(s, f);
196     }
197    
198 siliconforks 174 static void print_regex(jsval value, Stream * f) {
199 siliconforks 2 assert(JSVAL_IS_STRING(value));
200     JSString * s = JSVAL_TO_STRING(value);
201 siliconforks 174 size_t length = JSSTRING_LENGTH(s);
202     jschar * characters = JSSTRING_CHARS(s);
203     for (size_t i = 0; i < length; i++) {
204     jschar c = characters[i];
205     if (32 <= c && c <= 126) {
206     Stream_write_char(f, c);
207     }
208     else {
209     Stream_printf(f, "\\u%04x", c);
210     }
211     }
212 siliconforks 2 }
213    
214 siliconforks 92 static void print_quoted_string_atom(JSAtom * atom, Stream * f) {
215 siliconforks 2 assert(ATOM_IS_STRING(atom));
216     JSString * s = ATOM_TO_STRING(atom);
217 siliconforks 174 Stream_write_char(f, '"');
218     print_string(s, f);
219     Stream_write_char(f, '"');
220 siliconforks 2 }
221    
222     static const char * get_op(uint8 op) {
223     switch(op) {
224 siliconforks 336 case JSOP_OR:
225     return "||";
226     case JSOP_AND:
227     return "&&";
228 siliconforks 2 case JSOP_BITOR:
229     return "|";
230     case JSOP_BITXOR:
231     return "^";
232     case JSOP_BITAND:
233     return "&";
234     case JSOP_EQ:
235     return "==";
236     case JSOP_NE:
237     return "!=";
238 siliconforks 336 case JSOP_STRICTEQ:
239 siliconforks 2 return "===";
240 siliconforks 336 case JSOP_STRICTNE:
241 siliconforks 2 return "!==";
242     case JSOP_LT:
243     return "<";
244     case JSOP_LE:
245     return "<=";
246     case JSOP_GT:
247     return ">";
248     case JSOP_GE:
249     return ">=";
250     case JSOP_LSH:
251     return "<<";
252     case JSOP_RSH:
253     return ">>";
254     case JSOP_URSH:
255     return ">>>";
256     case JSOP_ADD:
257     return "+";
258     case JSOP_SUB:
259     return "-";
260     case JSOP_MUL:
261     return "*";
262     case JSOP_DIV:
263     return "/";
264     case JSOP_MOD:
265     return "%";
266     default:
267     abort();
268     }
269     }
270    
271 siliconforks 379 static void output_expression(JSParseNode * node, Stream * f, bool parenthesize_object_literals);
272 siliconforks 240 static void instrument_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if);
273 siliconforks 345 static void output_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if);
274 siliconforks 2
275 siliconforks 155 enum FunctionType {
276     FUNCTION_NORMAL,
277     FUNCTION_GETTER_OR_SETTER
278     };
279    
280 siliconforks 346 static void output_for_in(JSParseNode * node, Stream * f) {
281     assert(node->pn_type == TOK_FOR);
282     assert(node->pn_arity == PN_BINARY);
283     Stream_write_string(f, "for ");
284     if (node->pn_iflags & JSITER_FOREACH) {
285     Stream_write_string(f, "each ");
286     }
287     Stream_write_char(f, '(');
288 siliconforks 379 output_expression(node->pn_left, f, false);
289 siliconforks 346 Stream_write_char(f, ')');
290     }
291    
292 siliconforks 357 static void output_array_comprehension_or_generator_expression(JSParseNode * node, Stream * f) {
293     assert(node->pn_type == TOK_LEXICALSCOPE);
294     assert(node->pn_arity == PN_NAME);
295     JSParseNode * for_node = node->pn_expr;
296     assert(for_node->pn_type == TOK_FOR);
297     assert(for_node->pn_arity == PN_BINARY);
298     JSParseNode * p = for_node;
299     while (p->pn_type == TOK_FOR) {
300     p = p->pn_right;
301     }
302     JSParseNode * if_node = NULL;
303     if (p->pn_type == TOK_IF) {
304     if_node = p;
305     assert(if_node->pn_arity == PN_TERNARY);
306     p = if_node->pn_kid2;
307     }
308     assert(p->pn_arity == PN_UNARY);
309     p = p->pn_kid;
310     if (p->pn_type == TOK_YIELD) {
311     /* for generator expressions */
312     p = p->pn_kid;
313     }
314    
315 siliconforks 379 output_expression(p, f, false);
316 siliconforks 357 p = for_node;
317     while (p->pn_type == TOK_FOR) {
318     Stream_write_char(f, ' ');
319     output_for_in(p, f);
320     p = p->pn_right;
321     }
322     if (if_node) {
323     Stream_write_string(f, " if (");
324 siliconforks 379 output_expression(if_node->pn_kid1, f, false);
325 siliconforks 357 Stream_write_char(f, ')');
326     }
327     }
328    
329 siliconforks 155 static void instrument_function(JSParseNode * node, Stream * f, int indent, enum FunctionType type) {
330 siliconforks 336 assert(node->pn_type == TOK_FUNCTION);
331 siliconforks 156 assert(node->pn_arity == PN_FUNC);
332 siliconforks 336 JSObject * object = node->pn_funpob->object;
333 siliconforks 156 assert(JS_ObjectIsFunction(context, object));
334     JSFunction * function = (JSFunction *) JS_GetPrivate(context, object);
335     assert(function);
336 siliconforks 336 assert(object == &function->object);
337 siliconforks 156 Stream_printf(f, "%*s", indent, "");
338     if (type == FUNCTION_NORMAL) {
339 siliconforks 371 Stream_write_string(f, "function ");
340 siliconforks 156 }
341 siliconforks 2
342 siliconforks 156 /* function name */
343     if (function->atom) {
344     print_string_atom(function->atom, f);
345     }
346 siliconforks 2
347 siliconforks 336 /*
348     function parameters - see JS_DecompileFunction in jsapi.cpp, which calls
349     js_DecompileFunction in jsopcode.cpp
350     */
351 siliconforks 371 Stream_write_char(f, '(');
352 siliconforks 336 JSArenaPool pool;
353     JS_INIT_ARENA_POOL(&pool, "instrument_function", 256, 1, &context->scriptStackQuota);
354     jsuword * local_names = NULL;
355     if (JS_GET_LOCAL_NAME_COUNT(function)) {
356     local_names = js_GetLocalNameArray(context, function, &pool);
357     if (local_names == NULL) {
358     fatal("out of memory");
359 siliconforks 2 }
360 siliconforks 156 }
361 siliconforks 373 bool destructuring = false;
362 siliconforks 156 for (int i = 0; i < function->nargs; i++) {
363     if (i > 0) {
364     Stream_write_string(f, ", ");
365 siliconforks 2 }
366 siliconforks 336 JSAtom * param = JS_LOCAL_NAME_TO_ATOM(local_names[i]);
367 siliconforks 352 if (param == NULL) {
368 siliconforks 373 destructuring = true;
369     JSParseNode * expression = NULL;
370     assert(node->pn_body->pn_type == TOK_LC || node->pn_body->pn_type == TOK_BODY);
371     JSParseNode * semi = node->pn_body->pn_head;
372     assert(semi->pn_type == TOK_SEMI);
373     JSParseNode * comma = semi->pn_kid;
374     assert(comma->pn_type == TOK_COMMA);
375     for (JSParseNode * p = comma->pn_head; p != NULL; p = p->pn_next) {
376     assert(p->pn_type == TOK_ASSIGN);
377     JSParseNode * rhs = p->pn_right;
378     assert(JSSTRING_LENGTH(ATOM_TO_STRING(rhs->pn_atom)) == 0);
379     if (rhs->pn_slot == i) {
380     expression = p->pn_left;
381     break;
382     }
383     }
384     assert(expression != NULL);
385 siliconforks 379 output_expression(expression, f, false);
386 siliconforks 352 }
387 siliconforks 373 else {
388     print_string_atom(param, f);
389     }
390 siliconforks 156 }
391 siliconforks 336 JS_FinishArenaPool(&pool);
392 siliconforks 156 Stream_write_string(f, ") {\n");
393 siliconforks 2
394 siliconforks 156 /* function body */
395 siliconforks 345 if (function->flags & JSFUN_EXPR_CLOSURE) {
396 siliconforks 373 /* expression closure - use output_statement instead of instrument_statement */
397     if (node->pn_body->pn_type == TOK_BODY) {
398     assert(node->pn_body->pn_arity == PN_LIST);
399     assert(node->pn_body->pn_count == 2);
400     output_statement(node->pn_body->pn_head->pn_next, f, indent + 2, false);
401     }
402     else {
403     output_statement(node->pn_body, f, indent + 2, false);
404     }
405 siliconforks 345 }
406     else {
407 siliconforks 373 assert(node->pn_body->pn_type == TOK_LC);
408     assert(node->pn_body->pn_arity == PN_LIST);
409     JSParseNode * p = node->pn_body->pn_head;
410     if (destructuring) {
411     p = p->pn_next;
412     }
413     for (; p != NULL; p = p->pn_next) {
414     instrument_statement(p, f, indent + 2, false);
415     }
416 siliconforks 345 }
417 siliconforks 2
418 siliconforks 380 Stream_write_char(f, '}');
419 siliconforks 2 }
420    
421 siliconforks 92 static void instrument_function_call(JSParseNode * node, Stream * f) {
422 siliconforks 351 JSParseNode * function_node = node->pn_head;
423     if (function_node->pn_type == TOK_FUNCTION) {
424     JSObject * object = function_node->pn_funpob->object;
425     assert(JS_ObjectIsFunction(context, object));
426     JSFunction * function = (JSFunction *) JS_GetPrivate(context, object);
427     assert(function);
428     assert(object == &function->object);
429    
430     if (function_node->pn_flags & TCF_GENEXP_LAMBDA) {
431     /* it's a generator expression */
432     Stream_write_char(f, '(');
433 siliconforks 357 output_array_comprehension_or_generator_expression(function_node->pn_body, f);
434 siliconforks 351 Stream_write_char(f, ')');
435     return;
436 siliconforks 2 }
437     }
438 siliconforks 380 output_expression(function_node, f, false);
439 siliconforks 351 Stream_write_char(f, '(');
440     for (struct JSParseNode * p = function_node->pn_next; p != NULL; p = p->pn_next) {
441     if (p != node->pn_head->pn_next) {
442     Stream_write_string(f, ", ");
443 siliconforks 346 }
444 siliconforks 379 output_expression(p, f, false);
445 siliconforks 346 }
446 siliconforks 351 Stream_write_char(f, ')');
447 siliconforks 2 }
448    
449 siliconforks 340 static void instrument_declarations(JSParseNode * list, Stream * f) {
450     assert(list->pn_arity == PN_LIST);
451     for (JSParseNode * p = list->pn_head; p != NULL; p = p->pn_next) {
452 siliconforks 378 if (p != list->pn_head) {
453     Stream_write_string(f, ", ");
454 siliconforks 340 }
455 siliconforks 379 output_expression(p, f, false);
456 siliconforks 340 }
457     }
458    
459 siliconforks 2 /*
460     See <Expressions> in jsparse.h.
461     TOK_FUNCTION is handled as a statement and as an expression.
462     TOK_DBLDOT is not handled (XML op).
463     TOK_DEFSHARP and TOK_USESHARP are not handled.
464     TOK_ANYNAME is not handled (XML op).
465     TOK_AT is not handled (XML op).
466     TOK_DBLCOLON is not handled.
467     TOK_XML* are not handled.
468     There seem to be some undocumented expressions:
469     TOK_INSTANCEOF binary
470     TOK_IN binary
471     */
472 siliconforks 379 static void output_expression(JSParseNode * node, Stream * f, bool parenthesize_object_literals) {
473 siliconforks 2 switch (node->pn_type) {
474     case TOK_FUNCTION:
475 siliconforks 380 Stream_write_char(f, '(');
476 siliconforks 155 instrument_function(node, f, 0, FUNCTION_NORMAL);
477 siliconforks 380 Stream_write_char(f, ')');
478 siliconforks 2 break;
479     case TOK_COMMA:
480     for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
481     if (p != node->pn_head) {
482 siliconforks 92 Stream_write_string(f, ", ");
483 siliconforks 2 }
484 siliconforks 379 output_expression(p, f, parenthesize_object_literals);
485 siliconforks 2 }
486     break;
487     case TOK_ASSIGN:
488 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
489 siliconforks 92 Stream_write_char(f, ' ');
490 siliconforks 2 switch (node->pn_op) {
491     case JSOP_ADD:
492     case JSOP_SUB:
493     case JSOP_MUL:
494     case JSOP_MOD:
495     case JSOP_LSH:
496     case JSOP_RSH:
497     case JSOP_URSH:
498     case JSOP_BITAND:
499     case JSOP_BITOR:
500     case JSOP_BITXOR:
501     case JSOP_DIV:
502 siliconforks 92 Stream_printf(f, "%s", get_op(node->pn_op));
503 siliconforks 2 break;
504     default:
505     /* do nothing - it must be a simple assignment */
506     break;
507     }
508 siliconforks 92 Stream_write_string(f, "= ");
509 siliconforks 379 output_expression(node->pn_right, f, false);
510 siliconforks 2 break;
511     case TOK_HOOK:
512 siliconforks 379 output_expression(node->pn_kid1, f, parenthesize_object_literals);
513 siliconforks 92 Stream_write_string(f, "? ");
514 siliconforks 379 output_expression(node->pn_kid2, f, false);
515 siliconforks 92 Stream_write_string(f, ": ");
516 siliconforks 379 output_expression(node->pn_kid3, f, false);
517 siliconforks 2 break;
518     case TOK_OR:
519     case TOK_AND:
520     case TOK_BITOR:
521     case TOK_BITXOR:
522     case TOK_BITAND:
523     case TOK_EQOP:
524     case TOK_RELOP:
525     case TOK_SHOP:
526     case TOK_PLUS:
527     case TOK_MINUS:
528     case TOK_STAR:
529     case TOK_DIVOP:
530     switch (node->pn_arity) {
531     case PN_BINARY:
532 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
533 siliconforks 92 Stream_printf(f, " %s ", get_op(node->pn_op));
534 siliconforks 379 output_expression(node->pn_right, f, false);
535 siliconforks 2 break;
536     case PN_LIST:
537     for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
538 siliconforks 379 if (p == node->pn_head) {
539     output_expression(p, f, parenthesize_object_literals);
540     }
541     else {
542 siliconforks 92 Stream_printf(f, " %s ", get_op(node->pn_op));
543 siliconforks 379 output_expression(p, f, false);
544 siliconforks 2 }
545     }
546     break;
547     default:
548     abort();
549     }
550     break;
551     case TOK_UNARYOP:
552     switch (node->pn_op) {
553     case JSOP_NEG:
554 siliconforks 387 Stream_write_string(f, "- ");
555 siliconforks 379 output_expression(node->pn_kid, f, false);
556 siliconforks 2 break;
557     case JSOP_POS:
558 siliconforks 387 Stream_write_string(f, "+ ");
559 siliconforks 379 output_expression(node->pn_kid, f, false);
560 siliconforks 2 break;
561     case JSOP_NOT:
562 siliconforks 387 Stream_write_string(f, "! ");
563 siliconforks 379 output_expression(node->pn_kid, f, false);
564 siliconforks 2 break;
565     case JSOP_BITNOT:
566 siliconforks 387 Stream_write_string(f, "~ ");
567 siliconforks 379 output_expression(node->pn_kid, f, false);
568 siliconforks 2 break;
569     case JSOP_TYPEOF:
570 siliconforks 92 Stream_write_string(f, "typeof ");
571 siliconforks 379 output_expression(node->pn_kid, f, false);
572 siliconforks 2 break;
573     case JSOP_VOID:
574 siliconforks 92 Stream_write_string(f, "void ");
575 siliconforks 379 output_expression(node->pn_kid, f, false);
576 siliconforks 2 break;
577     default:
578 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unknown operator (%d)", node->pn_op);
579 siliconforks 2 break;
580     }
581     break;
582     case TOK_INC:
583     case TOK_DEC:
584     /*
585     This is not documented, but node->pn_op tells whether it is pre- or post-increment.
586     */
587     switch (node->pn_op) {
588     case JSOP_INCNAME:
589     case JSOP_INCPROP:
590     case JSOP_INCELEM:
591 siliconforks 92 Stream_write_string(f, "++");
592 siliconforks 379 output_expression(node->pn_kid, f, false);
593 siliconforks 2 break;
594     case JSOP_DECNAME:
595     case JSOP_DECPROP:
596     case JSOP_DECELEM:
597 siliconforks 92 Stream_write_string(f, "--");
598 siliconforks 379 output_expression(node->pn_kid, f, false);
599 siliconforks 2 break;
600     case JSOP_NAMEINC:
601     case JSOP_PROPINC:
602     case JSOP_ELEMINC:
603 siliconforks 379 output_expression(node->pn_kid, f, parenthesize_object_literals);
604 siliconforks 92 Stream_write_string(f, "++");
605 siliconforks 2 break;
606     case JSOP_NAMEDEC:
607     case JSOP_PROPDEC:
608     case JSOP_ELEMDEC:
609 siliconforks 379 output_expression(node->pn_kid, f, parenthesize_object_literals);
610 siliconforks 92 Stream_write_string(f, "--");
611 siliconforks 2 break;
612     default:
613     abort();
614     break;
615     }
616     break;
617     case TOK_NEW:
618 siliconforks 92 Stream_write_string(f, "new ");
619 siliconforks 2 instrument_function_call(node, f);
620     break;
621     case TOK_DELETE:
622 siliconforks 92 Stream_write_string(f, "delete ");
623 siliconforks 379 output_expression(node->pn_kid, f, false);
624 siliconforks 2 break;
625     case TOK_DOT:
626 siliconforks 378 /* numeric literals must be parenthesized */
627 siliconforks 377 switch (node->pn_expr->pn_type) {
628     case TOK_NUMBER:
629 siliconforks 375 Stream_write_char(f, '(');
630 siliconforks 379 output_expression(node->pn_expr, f, false);
631 siliconforks 375 Stream_write_char(f, ')');
632 siliconforks 377 break;
633     default:
634 siliconforks 379 output_expression(node->pn_expr, f, true);
635 siliconforks 377 break;
636 siliconforks 375 }
637 siliconforks 2 /*
638     This may have originally been x['foo-bar']. Because the string 'foo-bar'
639     contains illegal characters, we have to use the subscript syntax instead of
640     the dot syntax.
641     */
642 siliconforks 84 assert(ATOM_IS_STRING(node->pn_atom));
643     {
644     JSString * s = ATOM_TO_STRING(node->pn_atom);
645 siliconforks 349 bool must_quote;
646     if (JSSTRING_LENGTH(s) == 0) {
647     must_quote = true;
648 siliconforks 84 }
649 siliconforks 349 else if (js_CheckKeyword(JSSTRING_CHARS(s), JSSTRING_LENGTH(s)) != TOK_EOF) {
650     must_quote = true;
651     }
652     else if (! js_IsIdentifier(s)) {
653     must_quote = true;
654     }
655 siliconforks 84 else {
656 siliconforks 349 must_quote = false;
657     }
658     if (must_quote) {
659 siliconforks 92 Stream_write_char(f, '[');
660 siliconforks 84 print_quoted_string_atom(node->pn_atom, f);
661 siliconforks 92 Stream_write_char(f, ']');
662 siliconforks 84 }
663 siliconforks 349 else {
664     Stream_write_char(f, '.');
665     print_string_atom(node->pn_atom, f);
666     }
667 siliconforks 84 }
668 siliconforks 2 break;
669     case TOK_LB:
670 siliconforks 379 output_expression(node->pn_left, f, false);
671 siliconforks 92 Stream_write_char(f, '[');
672 siliconforks 379 output_expression(node->pn_right, f, false);
673 siliconforks 92 Stream_write_char(f, ']');
674 siliconforks 2 break;
675     case TOK_LP:
676     instrument_function_call(node, f);
677     break;
678     case TOK_RB:
679 siliconforks 92 Stream_write_char(f, '[');
680 siliconforks 2 for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
681     if (p != node->pn_head) {
682 siliconforks 92 Stream_write_string(f, ", ");
683 siliconforks 2 }
684     /* TOK_COMMA is a special case: a hole in the array */
685     if (p->pn_type != TOK_COMMA) {
686 siliconforks 379 output_expression(p, f, false);
687 siliconforks 2 }
688     }
689     if (node->pn_extra == PNX_ENDCOMMA) {
690 siliconforks 92 Stream_write_char(f, ',');
691 siliconforks 2 }
692 siliconforks 92 Stream_write_char(f, ']');
693 siliconforks 2 break;
694     case TOK_RC:
695 siliconforks 379 if (parenthesize_object_literals) {
696     Stream_write_char(f, '(');
697     }
698 siliconforks 92 Stream_write_char(f, '{');
699 siliconforks 2 for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
700 siliconforks 353 if (p->pn_type != TOK_COLON) {
701 siliconforks 370 fatal_source(file_id, p->pn_pos.begin.lineno, "unsupported node type (%d)", p->pn_type);
702 siliconforks 353 }
703 siliconforks 2 if (p != node->pn_head) {
704 siliconforks 92 Stream_write_string(f, ", ");
705 siliconforks 2 }
706 siliconforks 155
707     /* check whether this is a getter or setter */
708     switch (p->pn_op) {
709     case JSOP_GETTER:
710     case JSOP_SETTER:
711 siliconforks 293 if (p->pn_op == JSOP_GETTER) {
712     Stream_write_string(f, "get ");
713     }
714     else {
715     Stream_write_string(f, "set ");
716     }
717 siliconforks 379 output_expression(p->pn_left, f, false);
718 siliconforks 293 if (p->pn_right->pn_type != TOK_FUNCTION) {
719 siliconforks 370 fatal_source(file_id, p->pn_pos.begin.lineno, "expected function");
720 siliconforks 293 }
721 siliconforks 155 instrument_function(p->pn_right, f, 0, FUNCTION_GETTER_OR_SETTER);
722     break;
723     default:
724 siliconforks 379 output_expression(p->pn_left, f, false);
725 siliconforks 155 Stream_write_string(f, ": ");
726 siliconforks 379 output_expression(p->pn_right, f, false);
727 siliconforks 155 break;
728     }
729 siliconforks 2 }
730 siliconforks 92 Stream_write_char(f, '}');
731 siliconforks 379 if (parenthesize_object_literals) {
732     Stream_write_char(f, ')');
733     }
734 siliconforks 2 break;
735     case TOK_RP:
736 siliconforks 92 Stream_write_char(f, '(');
737 siliconforks 379 output_expression(node->pn_kid, f, false);
738 siliconforks 92 Stream_write_char(f, ')');
739 siliconforks 2 break;
740     case TOK_NAME:
741     print_string_atom(node->pn_atom, f);
742 siliconforks 379 if (node->pn_expr != NULL) {
743     Stream_write_string(f, " = ");
744     output_expression(node->pn_expr, f, false);
745     }
746 siliconforks 2 break;
747     case TOK_STRING:
748     print_quoted_string_atom(node->pn_atom, f);
749     break;
750 siliconforks 336 case TOK_REGEXP:
751     assert(node->pn_op == JSOP_REGEXP);
752     {
753     JSObject * object = node->pn_pob->object;
754     jsval result;
755     js_regexp_toString(context, object, &result);
756     print_regex(result, f);
757 siliconforks 2 }
758     break;
759     case TOK_NUMBER:
760     /*
761     A 64-bit IEEE 754 floating point number has a 52-bit fraction.
762     2^(-52) = 2.22 x 10^(-16)
763     Thus there are 16 significant digits.
764     To keep the output simple, special-case zero.
765     */
766     if (node->pn_dval == 0.0) {
767 siliconforks 390 if (signbit(node->pn_dval)) {
768     Stream_write_string(f, "-0");
769     }
770     else {
771     Stream_write_string(f, "0");
772     }
773 siliconforks 2 }
774 siliconforks 389 else if (node->pn_dval == INFINITY) {
775     Stream_write_string(f, "Number.POSITIVE_INFINITY");
776     }
777     else if (node->pn_dval == -INFINITY) {
778     Stream_write_string(f, "Number.NEGATIVE_INFINITY");
779     }
780     else if (node->pn_dval == NAN) {
781     Stream_write_string(f, "Number.NaN");
782     }
783 siliconforks 2 else {
784 siliconforks 92 Stream_printf(f, "%.15g", node->pn_dval);
785 siliconforks 2 }
786     break;
787     case TOK_PRIMARY:
788     switch (node->pn_op) {
789     case JSOP_TRUE:
790 siliconforks 92 Stream_write_string(f, "true");
791 siliconforks 2 break;
792     case JSOP_FALSE:
793 siliconforks 92 Stream_write_string(f, "false");
794 siliconforks 2 break;
795     case JSOP_NULL:
796 siliconforks 92 Stream_write_string(f, "null");
797 siliconforks 2 break;
798     case JSOP_THIS:
799 siliconforks 92 Stream_write_string(f, "this");
800 siliconforks 2 break;
801     /* jsscan.h mentions `super' ??? */
802     default:
803     abort();
804     }
805     break;
806     case TOK_INSTANCEOF:
807 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
808 siliconforks 92 Stream_write_string(f, " instanceof ");
809 siliconforks 379 output_expression(node->pn_right, f, false);
810 siliconforks 2 break;
811     case TOK_IN:
812 siliconforks 379 output_expression(node->pn_left, f, false);
813 siliconforks 92 Stream_write_string(f, " in ");
814 siliconforks 379 output_expression(node->pn_right, f, false);
815 siliconforks 2 break;
816 siliconforks 340 case TOK_LEXICALSCOPE:
817     assert(node->pn_arity == PN_NAME);
818     assert(node->pn_expr->pn_type == TOK_LET);
819     assert(node->pn_expr->pn_arity == PN_BINARY);
820     Stream_write_string(f, "let(");
821     assert(node->pn_expr->pn_left->pn_type == TOK_LP);
822     assert(node->pn_expr->pn_left->pn_arity == PN_LIST);
823     instrument_declarations(node->pn_expr->pn_left, f);
824     Stream_write_string(f, ") ");
825 siliconforks 379 output_expression(node->pn_expr->pn_right, f, true);
826 siliconforks 340 break;
827 siliconforks 342 case TOK_YIELD:
828     assert(node->pn_arity == PN_UNARY);
829 siliconforks 355 Stream_write_string(f, "yield");
830     if (node->pn_kid != NULL) {
831     Stream_write_char(f, ' ');
832 siliconforks 379 output_expression(node->pn_kid, f, true);
833 siliconforks 355 }
834 siliconforks 342 break;
835 siliconforks 343 case TOK_ARRAYCOMP:
836     assert(node->pn_arity == PN_LIST);
837     {
838     JSParseNode * block_node;
839     switch (node->pn_count) {
840     case 1:
841     block_node = node->pn_head;
842     break;
843     case 2:
844     block_node = node->pn_head->pn_next;
845     break;
846     default:
847     abort();
848     break;
849     }
850     Stream_write_char(f, '[');
851 siliconforks 357 output_array_comprehension_or_generator_expression(block_node, f);
852 siliconforks 343 Stream_write_char(f, ']');
853     }
854     break;
855     case TOK_VAR:
856     assert(node->pn_arity == PN_LIST);
857     Stream_write_string(f, "var ");
858     instrument_declarations(node, f);
859     break;
860     case TOK_LET:
861     assert(node->pn_arity == PN_LIST);
862     Stream_write_string(f, "let ");
863     instrument_declarations(node, f);
864     break;
865 siliconforks 2 default:
866 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
867 siliconforks 2 }
868     }
869    
870 siliconforks 240 static void output_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
871 siliconforks 2 switch (node->pn_type) {
872     case TOK_FUNCTION:
873 siliconforks 155 instrument_function(node, f, indent, FUNCTION_NORMAL);
874 siliconforks 380 Stream_write_char(f, '\n');
875 siliconforks 2 break;
876     case TOK_LC:
877     assert(node->pn_arity == PN_LIST);
878     /*
879 siliconforks 92 Stream_write_string(f, "{\n");
880 siliconforks 2 */
881     for (struct JSParseNode * p = node->pn_u.list.head; p != NULL; p = p->pn_next) {
882 siliconforks 240 instrument_statement(p, f, indent, false);
883 siliconforks 2 }
884     /*
885 siliconforks 92 Stream_printf(f, "%*s", indent, "");
886     Stream_write_string(f, "}\n");
887 siliconforks 2 */
888     break;
889     case TOK_IF:
890 siliconforks 240 {
891 siliconforks 2 assert(node->pn_arity == PN_TERNARY);
892 siliconforks 240
893     uint16_t line = node->pn_pos.begin.lineno;
894     if (! is_jscoverage_if) {
895     if (line > num_lines) {
896 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
897 siliconforks 240 }
898     if (line >= 2 && exclusive_directives[line - 2]) {
899     is_jscoverage_if = true;
900     }
901     }
902    
903 siliconforks 92 Stream_printf(f, "%*s", indent, "");
904     Stream_write_string(f, "if (");
905 siliconforks 379 output_expression(node->pn_kid1, f, false);
906 siliconforks 92 Stream_write_string(f, ") {\n");
907 siliconforks 240 if (is_jscoverage_if && node->pn_kid3) {
908     uint16_t else_start = node->pn_kid3->pn_pos.begin.lineno;
909     uint16_t else_end = node->pn_kid3->pn_pos.end.lineno + 1;
910     Stream_printf(f, "%*s", indent + 2, "");
911     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, else_start, else_end);
912     }
913     instrument_statement(node->pn_kid2, f, indent + 2, false);
914 siliconforks 92 Stream_printf(f, "%*s", indent, "");
915     Stream_write_string(f, "}\n");
916 siliconforks 240
917     if (node->pn_kid3 || is_jscoverage_if) {
918 siliconforks 92 Stream_printf(f, "%*s", indent, "");
919     Stream_write_string(f, "else {\n");
920 siliconforks 240
921     if (is_jscoverage_if) {
922     uint16_t if_start = node->pn_kid2->pn_pos.begin.lineno + 1;
923     uint16_t if_end = node->pn_kid2->pn_pos.end.lineno + 1;
924     Stream_printf(f, "%*s", indent + 2, "");
925     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_start, if_end);
926     }
927    
928     if (node->pn_kid3) {
929     instrument_statement(node->pn_kid3, f, indent + 2, is_jscoverage_if);
930     }
931    
932 siliconforks 92 Stream_printf(f, "%*s", indent, "");
933     Stream_write_string(f, "}\n");
934 siliconforks 2 }
935 siliconforks 240
936 siliconforks 2 break;
937 siliconforks 240 }
938 siliconforks 2 case TOK_SWITCH:
939     assert(node->pn_arity == PN_BINARY);
940 siliconforks 92 Stream_printf(f, "%*s", indent, "");
941     Stream_write_string(f, "switch (");
942 siliconforks 379 output_expression(node->pn_left, f, false);
943 siliconforks 92 Stream_write_string(f, ") {\n");
944 siliconforks 350 {
945     JSParseNode * list = node->pn_right;
946     if (list->pn_type == TOK_LEXICALSCOPE) {
947     list = list->pn_expr;
948 siliconforks 2 }
949 siliconforks 350 for (struct JSParseNode * p = list->pn_head; p != NULL; p = p->pn_next) {
950     Stream_printf(f, "%*s", indent, "");
951     switch (p->pn_type) {
952     case TOK_CASE:
953     Stream_write_string(f, "case ");
954 siliconforks 379 output_expression(p->pn_left, f, false);
955 siliconforks 350 Stream_write_string(f, ":\n");
956     break;
957     case TOK_DEFAULT:
958     Stream_write_string(f, "default:\n");
959     break;
960     default:
961     abort();
962     break;
963     }
964     instrument_statement(p->pn_right, f, indent + 2, false);
965     }
966 siliconforks 2 }
967 siliconforks 92 Stream_printf(f, "%*s", indent, "");
968     Stream_write_string(f, "}\n");
969 siliconforks 2 break;
970     case TOK_CASE:
971     case TOK_DEFAULT:
972     abort();
973     break;
974     case TOK_WHILE:
975     assert(node->pn_arity == PN_BINARY);
976 siliconforks 92 Stream_printf(f, "%*s", indent, "");
977     Stream_write_string(f, "while (");
978 siliconforks 379 output_expression(node->pn_left, f, false);
979 siliconforks 92 Stream_write_string(f, ") {\n");
980 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
981 siliconforks 92 Stream_write_string(f, "}\n");
982 siliconforks 2 break;
983     case TOK_DO:
984     assert(node->pn_arity == PN_BINARY);
985 siliconforks 92 Stream_printf(f, "%*s", indent, "");
986     Stream_write_string(f, "do {\n");
987 siliconforks 240 instrument_statement(node->pn_left, f, indent + 2, false);
988 siliconforks 92 Stream_write_string(f, "}\n");
989     Stream_printf(f, "%*s", indent, "");
990     Stream_write_string(f, "while (");
991 siliconforks 379 output_expression(node->pn_right, f, false);
992 siliconforks 92 Stream_write_string(f, ");\n");
993 siliconforks 2 break;
994     case TOK_FOR:
995     assert(node->pn_arity == PN_BINARY);
996 siliconforks 92 Stream_printf(f, "%*s", indent, "");
997 siliconforks 2 switch (node->pn_left->pn_type) {
998     case TOK_IN:
999     /* for/in */
1000     assert(node->pn_left->pn_arity == PN_BINARY);
1001 siliconforks 343 output_for_in(node, f);
1002 siliconforks 2 break;
1003     case TOK_RESERVED:
1004     /* for (;;) */
1005     assert(node->pn_left->pn_arity == PN_TERNARY);
1006 siliconforks 343 Stream_write_string(f, "for (");
1007 siliconforks 2 if (node->pn_left->pn_kid1) {
1008 siliconforks 379 output_expression(node->pn_left->pn_kid1, f, false);
1009 siliconforks 2 }
1010 siliconforks 92 Stream_write_string(f, ";");
1011 siliconforks 2 if (node->pn_left->pn_kid2) {
1012 siliconforks 92 Stream_write_char(f, ' ');
1013 siliconforks 379 output_expression(node->pn_left->pn_kid2, f, false);
1014 siliconforks 2 }
1015 siliconforks 92 Stream_write_string(f, ";");
1016 siliconforks 2 if (node->pn_left->pn_kid3) {
1017 siliconforks 92 Stream_write_char(f, ' ');
1018 siliconforks 379 output_expression(node->pn_left->pn_kid3, f, false);
1019 siliconforks 2 }
1020 siliconforks 343 Stream_write_char(f, ')');
1021 siliconforks 2 break;
1022     default:
1023     abort();
1024     break;
1025     }
1026 siliconforks 343 Stream_write_string(f, " {\n");
1027 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1028 siliconforks 92 Stream_write_string(f, "}\n");
1029 siliconforks 2 break;
1030     case TOK_THROW:
1031     assert(node->pn_arity == PN_UNARY);
1032 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1033     Stream_write_string(f, "throw ");
1034 siliconforks 379 output_expression(node->pn_u.unary.kid, f, false);
1035 siliconforks 92 Stream_write_string(f, ";\n");
1036 siliconforks 2 break;
1037     case TOK_TRY:
1038 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1039     Stream_write_string(f, "try {\n");
1040 siliconforks 240 instrument_statement(node->pn_kid1, f, indent + 2, false);
1041 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1042     Stream_write_string(f, "}\n");
1043 siliconforks 336 if (node->pn_kid2) {
1044     assert(node->pn_kid2->pn_type == TOK_RESERVED);
1045     for (JSParseNode * scope = node->pn_kid2->pn_head; scope != NULL; scope = scope->pn_next) {
1046     assert(scope->pn_type == TOK_LEXICALSCOPE);
1047     JSParseNode * catch = scope->pn_expr;
1048 siliconforks 2 assert(catch->pn_type == TOK_CATCH);
1049 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1050     Stream_write_string(f, "catch (");
1051 siliconforks 379 output_expression(catch->pn_kid1, f, false);
1052 siliconforks 336 if (catch->pn_kid2) {
1053 siliconforks 92 Stream_write_string(f, " if ");
1054 siliconforks 379 output_expression(catch->pn_kid2, f, false);
1055 siliconforks 2 }
1056 siliconforks 92 Stream_write_string(f, ") {\n");
1057 siliconforks 240 instrument_statement(catch->pn_kid3, f, indent + 2, false);
1058 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1059     Stream_write_string(f, "}\n");
1060 siliconforks 2 }
1061     }
1062     if (node->pn_kid3) {
1063 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1064     Stream_write_string(f, "finally {\n");
1065 siliconforks 240 instrument_statement(node->pn_kid3, f, indent + 2, false);
1066 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1067     Stream_write_string(f, "}\n");
1068 siliconforks 2 }
1069     break;
1070     case TOK_CATCH:
1071     abort();
1072     break;
1073     case TOK_BREAK:
1074     case TOK_CONTINUE:
1075     assert(node->pn_arity == PN_NAME || node->pn_arity == PN_NULLARY);
1076 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1077     Stream_write_string(f, node->pn_type == TOK_BREAK? "break": "continue");
1078 siliconforks 2 JSAtom * atom = node->pn_u.name.atom;
1079     if (atom != NULL) {
1080 siliconforks 92 Stream_write_char(f, ' ');
1081 siliconforks 2 print_string_atom(node->pn_atom, f);
1082     }
1083 siliconforks 92 Stream_write_string(f, ";\n");
1084 siliconforks 2 break;
1085     case TOK_WITH:
1086     assert(node->pn_arity == PN_BINARY);
1087 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1088     Stream_write_string(f, "with (");
1089 siliconforks 379 output_expression(node->pn_left, f, false);
1090 siliconforks 92 Stream_write_string(f, ") {\n");
1091 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1092 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1093     Stream_write_string(f, "}\n");
1094 siliconforks 2 break;
1095     case TOK_VAR:
1096 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1097 siliconforks 379 output_expression(node, f, false);
1098 siliconforks 92 Stream_write_string(f, ";\n");
1099 siliconforks 2 break;
1100     case TOK_RETURN:
1101     assert(node->pn_arity == PN_UNARY);
1102 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1103     Stream_write_string(f, "return");
1104 siliconforks 2 if (node->pn_kid != NULL) {
1105 siliconforks 92 Stream_write_char(f, ' ');
1106 siliconforks 379 output_expression(node->pn_kid, f, true);
1107 siliconforks 2 }
1108 siliconforks 92 Stream_write_string(f, ";\n");
1109 siliconforks 2 break;
1110     case TOK_SEMI:
1111     assert(node->pn_arity == PN_UNARY);
1112 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1113 siliconforks 2 if (node->pn_kid != NULL) {
1114 siliconforks 379 output_expression(node->pn_kid, f, true);
1115 siliconforks 2 }
1116 siliconforks 92 Stream_write_string(f, ";\n");
1117 siliconforks 2 break;
1118     case TOK_COLON:
1119 siliconforks 376 {
1120 siliconforks 2 assert(node->pn_arity == PN_NAME);
1121 siliconforks 92 Stream_printf(f, "%*s", indent < 2? 0: indent - 2, "");
1122 siliconforks 2 print_string_atom(node->pn_atom, f);
1123 siliconforks 92 Stream_write_string(f, ":\n");
1124 siliconforks 376 JSParseNode * labelled = node->pn_expr;
1125     if (labelled->pn_type == TOK_LEXICALSCOPE) {
1126     labelled = labelled->pn_expr;
1127     }
1128     if (labelled->pn_type == TOK_LC) {
1129     /* labelled block */
1130     Stream_printf(f, "%*s", indent, "");
1131     Stream_write_string(f, "{\n");
1132     instrument_statement(labelled, f, indent + 2, false);
1133     Stream_printf(f, "%*s", indent, "");
1134     Stream_write_string(f, "}\n");
1135     }
1136     else {
1137     /*
1138     This one is tricky: can't output instrumentation between the label and the
1139     statement it's supposed to label, so use output_statement instead of
1140     instrument_statement.
1141     */
1142     output_statement(labelled, f, indent, false);
1143     }
1144 siliconforks 2 break;
1145 siliconforks 376 }
1146 siliconforks 340 case TOK_LEXICALSCOPE:
1147     /* let statement */
1148     assert(node->pn_arity == PN_NAME);
1149     switch (node->pn_expr->pn_type) {
1150     case TOK_LET:
1151     /* let statement */
1152     assert(node->pn_expr->pn_arity == PN_BINARY);
1153     instrument_statement(node->pn_expr, f, indent, false);
1154     break;
1155     case TOK_LC:
1156     /* block */
1157     Stream_printf(f, "%*s", indent, "");
1158     Stream_write_string(f, "{\n");
1159     instrument_statement(node->pn_expr, f, indent + 2, false);
1160     Stream_printf(f, "%*s", indent, "");
1161     Stream_write_string(f, "}\n");
1162     break;
1163     case TOK_FOR:
1164     instrument_statement(node->pn_expr, f, indent, false);
1165     break;
1166     default:
1167     abort();
1168     break;
1169     }
1170     break;
1171     case TOK_LET:
1172     switch (node->pn_arity) {
1173     case PN_BINARY:
1174     /* let statement */
1175     Stream_printf(f, "%*s", indent, "");
1176     Stream_write_string(f, "let (");
1177     assert(node->pn_left->pn_type == TOK_LP);
1178     assert(node->pn_left->pn_arity == PN_LIST);
1179     instrument_declarations(node->pn_left, f);
1180     Stream_write_string(f, ") {\n");
1181     instrument_statement(node->pn_right, f, indent + 2, false);
1182     Stream_printf(f, "%*s", indent, "");
1183     Stream_write_string(f, "}\n");
1184     break;
1185     case PN_LIST:
1186     /* let definition */
1187 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1188 siliconforks 379 output_expression(node, f, false);
1189 siliconforks 340 Stream_write_string(f, ";\n");
1190     break;
1191     default:
1192     abort();
1193     break;
1194     }
1195     break;
1196 siliconforks 348 case TOK_DEBUGGER:
1197     Stream_printf(f, "%*s", indent, "");
1198     Stream_write_string(f, "debugger;\n");
1199     break;
1200 siliconforks 2 default:
1201 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
1202 siliconforks 2 }
1203     }
1204    
1205     /*
1206     See <Statements> in jsparse.h.
1207     TOK_FUNCTION is handled as a statement and as an expression.
1208     TOK_EXPORT, TOK_IMPORT are not handled.
1209     */
1210 siliconforks 240 static void instrument_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
1211 siliconforks 340 if (node->pn_type != TOK_LC && node->pn_type != TOK_LEXICALSCOPE) {
1212 siliconforks 214 uint16_t line = node->pn_pos.begin.lineno;
1213     if (line > num_lines) {
1214 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1215 siliconforks 214 }
1216    
1217 siliconforks 2 /* the root node has line number 0 */
1218     if (line != 0) {
1219 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1220     Stream_printf(f, "_$jscoverage['%s'][%d]++;\n", file_id, line);
1221 siliconforks 2 lines[line - 1] = 1;
1222     }
1223     }
1224 siliconforks 240 output_statement(node, f, indent, is_jscoverage_if);
1225 siliconforks 2 }
1226    
1227 siliconforks 190 static bool characters_start_with(const jschar * characters, size_t line_start, size_t line_end, const char * prefix) {
1228     const jschar * characters_end = characters + line_end;
1229     const jschar * cp = characters + line_start;
1230     const char * bp = prefix;
1231     for (;;) {
1232     if (*bp == '\0') {
1233     return true;
1234     }
1235     else if (cp == characters_end) {
1236     return false;
1237     }
1238     else if (*cp != *bp) {
1239     return false;
1240     }
1241     bp++;
1242     cp++;
1243     }
1244     }
1245    
1246 siliconforks 240 static bool characters_are_white_space(const jschar * characters, size_t line_start, size_t line_end) {
1247     /* XXX - other Unicode space */
1248     const jschar * end = characters + line_end;
1249     for (const jschar * p = characters + line_start; p < end; p++) {
1250     jschar c = *p;
1251     if (c == 0x9 || c == 0xB || c == 0xC || c == 0x20 || c == 0xA0) {
1252     continue;
1253     }
1254     else {
1255     return false;
1256     }
1257     }
1258     return true;
1259     }
1260    
1261 siliconforks 284 static void error_reporter(JSContext * context, const char * message, JSErrorReport * report) {
1262 siliconforks 372 warn_source(file_id, report->lineno, "%s", message);
1263 siliconforks 284 }
1264    
1265 siliconforks 179 void jscoverage_instrument_js(const char * id, const uint16_t * characters, size_t num_characters, Stream * output) {
1266 siliconforks 2 file_id = id;
1267    
1268 siliconforks 336 /* parse the javascript */
1269     JSParseContext parse_context;
1270     if (! js_InitParseContext(context, &parse_context, NULL, NULL, characters, num_characters, NULL, NULL, 1)) {
1271 siliconforks 370 fatal("cannot create token stream from file %s", file_id);
1272 siliconforks 2 }
1273 siliconforks 284 JSErrorReporter old_error_reporter = JS_SetErrorReporter(context, error_reporter);
1274 siliconforks 336 JSParseNode * node = js_ParseScript(context, global, &parse_context);
1275 siliconforks 2 if (node == NULL) {
1276 siliconforks 284 js_ReportUncaughtException(context);
1277 siliconforks 370 fatal("parse error in file %s", file_id);
1278 siliconforks 2 }
1279 siliconforks 284 JS_SetErrorReporter(context, old_error_reporter);
1280 siliconforks 214 num_lines = node->pn_pos.end.lineno;
1281 siliconforks 2 lines = xmalloc(num_lines);
1282 siliconforks 240 for (unsigned int i = 0; i < num_lines; i++) {
1283 siliconforks 2 lines[i] = 0;
1284     }
1285    
1286 siliconforks 240 /* search code for conditionals */
1287     exclusive_directives = xnew(bool, num_lines);
1288     for (unsigned int i = 0; i < num_lines; i++) {
1289     exclusive_directives[i] = false;
1290 siliconforks 2 }
1291    
1292 siliconforks 157 bool has_conditionals = false;
1293 siliconforks 240 struct IfDirective * if_directives = NULL;
1294 siliconforks 157 size_t line_number = 0;
1295     size_t i = 0;
1296 siliconforks 176 while (i < num_characters) {
1297 siliconforks 240 if (line_number == UINT16_MAX) {
1298 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1299 siliconforks 240 }
1300 siliconforks 157 line_number++;
1301     size_t line_start = i;
1302 siliconforks 190 jschar c;
1303     bool done = false;
1304     while (! done && i < num_characters) {
1305     c = characters[i];
1306     switch (c) {
1307     case '\r':
1308     case '\n':
1309     case 0x2028:
1310     case 0x2029:
1311     done = true;
1312     break;
1313     default:
1314     i++;
1315     }
1316 siliconforks 157 }
1317     size_t line_end = i;
1318 siliconforks 176 if (i < num_characters) {
1319 siliconforks 190 i++;
1320     if (c == '\r' && i < num_characters && characters[i] == '\n') {
1321 siliconforks 157 i++;
1322     }
1323     }
1324 siliconforks 240
1325 siliconforks 190 if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_IF")) {
1326 siliconforks 240 has_conditionals = true;
1327    
1328     if (characters_are_white_space(characters, line_start + 16, line_end)) {
1329     exclusive_directives[line_number - 1] = true;
1330 siliconforks 157 }
1331 siliconforks 240 else {
1332     struct IfDirective * if_directive = xnew(struct IfDirective, 1);
1333     if_directive->condition_start = characters + line_start + 16;
1334     if_directive->condition_end = characters + line_end;
1335     if_directive->start_line = line_number;
1336     if_directive->end_line = 0;
1337     if_directive->next = if_directives;
1338     if_directives = if_directive;
1339 siliconforks 190 }
1340 siliconforks 157 }
1341 siliconforks 190 else if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_ENDIF")) {
1342 siliconforks 240 for (struct IfDirective * p = if_directives; p != NULL; p = p->next) {
1343     if (p->end_line == 0) {
1344     p->end_line = line_number;
1345     break;
1346     }
1347     }
1348 siliconforks 157 }
1349     }
1350    
1351 siliconforks 240 /*
1352     An instrumented JavaScript file has 4 sections:
1353     1. initialization
1354     2. instrumented source code
1355     3. conditionals
1356     4. original source code
1357     */
1358    
1359     Stream * instrumented = Stream_new(0);
1360     instrument_statement(node, instrumented, 0, false);
1361 siliconforks 336 js_FinishParseContext(context, &parse_context);
1362 siliconforks 240
1363     /* write line number info to the output */
1364     Stream_write_string(output, "/* automatically generated by JSCoverage - do not edit */\n");
1365 siliconforks 361 if (jscoverage_mozilla) {
1366     Stream_write_string(output, "try {\n");
1367     Stream_write_string(output, " Components.utils.import('resource://gre/modules/jscoverage.jsm');\n");
1368     Stream_printf(output, " dump('%s: successfully imported jscoverage module\\n');\n", id);
1369     Stream_write_string(output, "}\n");
1370     Stream_write_string(output, "catch (e) {\n");
1371     Stream_write_string(output, " _$jscoverage = {};\n");
1372     Stream_printf(output, " dump('%s: failed to import jscoverage module - coverage not available for this file\\n');\n", id);
1373     Stream_write_string(output, "}\n");
1374     }
1375     else {
1376     Stream_write_string(output, "if (! top._$jscoverage) {\n top._$jscoverage = {};\n}\n");
1377     Stream_write_string(output, "var _$jscoverage = top._$jscoverage;\n");
1378     }
1379 siliconforks 240 Stream_printf(output, "if (! _$jscoverage['%s']) {\n", file_id);
1380     Stream_printf(output, " _$jscoverage['%s'] = [];\n", file_id);
1381     for (int i = 0; i < num_lines; i++) {
1382     if (lines[i]) {
1383     Stream_printf(output, " _$jscoverage['%s'][%d] = 0;\n", file_id, i + 1);
1384     }
1385     }
1386     Stream_write_string(output, "}\n");
1387     free(lines);
1388     lines = NULL;
1389     free(exclusive_directives);
1390     exclusive_directives = NULL;
1391    
1392     /* conditionals */
1393     if (has_conditionals) {
1394     Stream_printf(output, "_$jscoverage['%s'].conditionals = [];\n", file_id);
1395     }
1396    
1397     /* copy the instrumented source code to the output */
1398     Stream_write(output, instrumented->data, instrumented->length);
1399    
1400     /* conditionals */
1401     for (struct IfDirective * if_directive = if_directives; if_directive != NULL; if_directive = if_directive->next) {
1402     Stream_write_string(output, "if (!(");
1403 siliconforks 246 print_javascript(if_directive->condition_start, if_directive->condition_end - if_directive->condition_start, output);
1404 siliconforks 240 Stream_write_string(output, ")) {\n");
1405     Stream_printf(output, " _$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_directive->start_line, if_directive->end_line);
1406     Stream_write_string(output, "}\n");
1407     }
1408    
1409     /* free */
1410     while (if_directives != NULL) {
1411     struct IfDirective * if_directive = if_directives;
1412     if_directives = if_directives->next;
1413     free(if_directive);
1414     }
1415    
1416 siliconforks 95 /* copy the original source to the output */
1417 siliconforks 179 Stream_printf(output, "_$jscoverage['%s'].source = ", file_id);
1418     jscoverage_write_source(id, characters, num_characters, output);
1419     Stream_printf(output, ";\n");
1420 siliconforks 95
1421 siliconforks 179 Stream_delete(instrumented);
1422    
1423     file_id = NULL;
1424     }
1425    
1426     void jscoverage_write_source(const char * id, const jschar * characters, size_t num_characters, Stream * output) {
1427     Stream_write_string(output, "[");
1428     if (jscoverage_highlight) {
1429     Stream * highlighted_stream = Stream_new(num_characters);
1430     jscoverage_highlight_js(context, id, characters, num_characters, highlighted_stream);
1431     size_t i = 0;
1432     while (i < highlighted_stream->length) {
1433     if (i > 0) {
1434     Stream_write_char(output, ',');
1435     }
1436    
1437     Stream_write_char(output, '"');
1438     bool done = false;
1439     while (! done) {
1440     char c = highlighted_stream->data[i];
1441     switch (c) {
1442     case 0x8:
1443     /* backspace */
1444     Stream_write_string(output, "\\b");
1445     break;
1446     case 0x9:
1447     /* horizontal tab */
1448     Stream_write_string(output, "\\t");
1449     break;
1450     case 0xa:
1451     /* line feed (new line) */
1452     done = true;
1453     break;
1454 siliconforks 317 /* IE doesn't support this */
1455     /*
1456 siliconforks 179 case 0xb:
1457     Stream_write_string(output, "\\v");
1458     break;
1459 siliconforks 317 */
1460 siliconforks 179 case 0xc:
1461     /* form feed */
1462     Stream_write_string(output, "\\f");
1463     break;
1464     case 0xd:
1465     /* carriage return */
1466     done = true;
1467     if (i + 1 < highlighted_stream->length && highlighted_stream->data[i + 1] == '\n') {
1468     i++;
1469     }
1470     break;
1471     case '"':
1472     Stream_write_string(output, "\\\"");
1473     break;
1474     case '\\':
1475     Stream_write_string(output, "\\\\");
1476     break;
1477     default:
1478     Stream_write_char(output, c);
1479     break;
1480     }
1481 siliconforks 95 i++;
1482 siliconforks 179 if (i >= highlighted_stream->length) {
1483     done = true;
1484 siliconforks 95 }
1485     }
1486 siliconforks 179 Stream_write_char(output, '"');
1487     }
1488     Stream_delete(highlighted_stream);
1489     }
1490     else {
1491     size_t i = 0;
1492     while (i < num_characters) {
1493     if (i > 0) {
1494     Stream_write_char(output, ',');
1495     }
1496    
1497     Stream_write_char(output, '"');
1498     bool done = false;
1499     while (! done) {
1500     jschar c = characters[i];
1501     switch (c) {
1502     case 0x8:
1503     /* backspace */
1504     Stream_write_string(output, "\\b");
1505     break;
1506     case 0x9:
1507     /* horizontal tab */
1508     Stream_write_string(output, "\\t");
1509     break;
1510     case 0xa:
1511     /* line feed (new line) */
1512     done = true;
1513     break;
1514 siliconforks 317 /* IE doesn't support this */
1515     /*
1516 siliconforks 179 case 0xb:
1517     Stream_write_string(output, "\\v");
1518     break;
1519 siliconforks 317 */
1520 siliconforks 179 case 0xc:
1521     /* form feed */
1522     Stream_write_string(output, "\\f");
1523     break;
1524     case 0xd:
1525     /* carriage return */
1526     done = true;
1527     if (i + 1 < num_characters && characters[i + 1] == '\n') {
1528     i++;
1529     }
1530     break;
1531     case '"':
1532     Stream_write_string(output, "\\\"");
1533     break;
1534     case '\\':
1535     Stream_write_string(output, "\\\\");
1536     break;
1537     case '&':
1538     Stream_write_string(output, "&amp;");
1539     break;
1540     case '<':
1541     Stream_write_string(output, "&lt;");
1542     break;
1543     case '>':
1544     Stream_write_string(output, "&gt;");
1545     break;
1546     case 0x2028:
1547     case 0x2029:
1548     done = true;
1549     break;
1550     default:
1551     if (32 <= c && c <= 126) {
1552     Stream_write_char(output, c);
1553     }
1554     else {
1555     Stream_printf(output, "&#%d;", c);
1556     }
1557     break;
1558     }
1559 siliconforks 95 i++;
1560 siliconforks 179 if (i >= num_characters) {
1561     done = true;
1562     }
1563 siliconforks 95 }
1564 siliconforks 179 Stream_write_char(output, '"');
1565 siliconforks 95 }
1566     }
1567 siliconforks 179 Stream_write_string(output, "]");
1568 siliconforks 2 }
1569 siliconforks 116
1570     void jscoverage_copy_resources(const char * destination_directory) {
1571     copy_resource("jscoverage.html", destination_directory);
1572     copy_resource("jscoverage.css", destination_directory);
1573     copy_resource("jscoverage.js", destination_directory);
1574 siliconforks 169 copy_resource("jscoverage-ie.css", destination_directory);
1575 siliconforks 116 copy_resource("jscoverage-throbber.gif", destination_directory);
1576 siliconforks 179 copy_resource("jscoverage-highlight.css", destination_directory);
1577 siliconforks 116 }
1578    
1579     /*
1580     coverage reports
1581     */
1582    
1583     struct FileCoverageList {
1584     FileCoverage * file_coverage;
1585     struct FileCoverageList * next;
1586     };
1587    
1588     struct Coverage {
1589     JSHashTable * coverage_table;
1590     struct FileCoverageList * coverage_list;
1591     };
1592    
1593     static int compare_strings(const void * p1, const void * p2) {
1594     return strcmp(p1, p2) == 0;
1595     }
1596    
1597     Coverage * Coverage_new(void) {
1598     Coverage * result = xmalloc(sizeof(Coverage));
1599     result->coverage_table = JS_NewHashTable(1024, JS_HashString, compare_strings, NULL, NULL, NULL);
1600     if (result->coverage_table == NULL) {
1601     fatal("cannot create hash table");
1602     }
1603     result->coverage_list = NULL;
1604     return result;
1605     }
1606    
1607     void Coverage_delete(Coverage * coverage) {
1608     JS_HashTableDestroy(coverage->coverage_table);
1609     struct FileCoverageList * p = coverage->coverage_list;
1610     while (p != NULL) {
1611 siliconforks 179 free(p->file_coverage->coverage_lines);
1612     if (p->file_coverage->source_lines != NULL) {
1613     for (uint32 i = 0; i < p->file_coverage->num_source_lines; i++) {
1614     free(p->file_coverage->source_lines[i]);
1615     }
1616     free(p->file_coverage->source_lines);
1617     }
1618 siliconforks 116 free(p->file_coverage->id);
1619     free(p->file_coverage);
1620     struct FileCoverageList * q = p;
1621     p = p->next;
1622     free(q);
1623     }
1624     free(coverage);
1625     }
1626    
1627     struct EnumeratorArg {
1628     CoverageForeachFunction f;
1629     void * p;
1630     };
1631    
1632     static intN enumerator(JSHashEntry * entry, intN i, void * arg) {
1633     struct EnumeratorArg * enumerator_arg = arg;
1634     enumerator_arg->f(entry->value, i, enumerator_arg->p);
1635     return 0;
1636     }
1637    
1638     void Coverage_foreach_file(Coverage * coverage, CoverageForeachFunction f, void * p) {
1639     struct EnumeratorArg enumerator_arg;
1640     enumerator_arg.f = f;
1641     enumerator_arg.p = p;
1642     JS_HashTableEnumerateEntries(coverage->coverage_table, enumerator, &enumerator_arg);
1643     }
1644    
1645     int jscoverage_parse_json(Coverage * coverage, const uint8_t * json, size_t length) {
1646 siliconforks 336 int result = 0;
1647    
1648 siliconforks 116 jschar * base = js_InflateString(context, (char *) json, &length);
1649     if (base == NULL) {
1650     fatal("out of memory");
1651     }
1652    
1653     jschar * parenthesized_json = xnew(jschar, addst(length, 2));
1654     parenthesized_json[0] = '(';
1655     memcpy(parenthesized_json + 1, base, mulst(length, sizeof(jschar)));
1656     parenthesized_json[length + 1] = ')';
1657    
1658     JS_free(context, base);
1659    
1660 siliconforks 336 JSParseContext parse_context;
1661     if (! js_InitParseContext(context, &parse_context, NULL, NULL, parenthesized_json, length + 2, NULL, NULL, 1)) {
1662     free(parenthesized_json);
1663     return -1;
1664 siliconforks 116 }
1665 siliconforks 336 JSParseNode * root = js_ParseScript(context, global, &parse_context);
1666 siliconforks 116 free(parenthesized_json);
1667     if (root == NULL) {
1668 siliconforks 336 result = -1;
1669     goto done;
1670 siliconforks 116 }
1671    
1672     /* root node must be TOK_LC */
1673     if (root->pn_type != TOK_LC) {
1674 siliconforks 336 result = -1;
1675     goto done;
1676 siliconforks 116 }
1677     JSParseNode * semi = root->pn_u.list.head;
1678    
1679     /* the list must be TOK_SEMI and it must contain only one element */
1680     if (semi->pn_type != TOK_SEMI || semi->pn_next != NULL) {
1681 siliconforks 336 result = -1;
1682     goto done;
1683 siliconforks 116 }
1684     JSParseNode * parenthesized = semi->pn_kid;
1685    
1686     /* this must be a parenthesized expression */
1687     if (parenthesized->pn_type != TOK_RP) {
1688 siliconforks 336 result = -1;
1689     goto done;
1690 siliconforks 116 }
1691     JSParseNode * object = parenthesized->pn_kid;
1692    
1693     /* this must be an object literal */
1694     if (object->pn_type != TOK_RC) {
1695 siliconforks 336 result = -1;
1696     goto done;
1697 siliconforks 116 }
1698    
1699     for (JSParseNode * p = object->pn_head; p != NULL; p = p->pn_next) {
1700     /* every element of this list must be TOK_COLON */
1701     if (p->pn_type != TOK_COLON) {
1702 siliconforks 336 result = -1;
1703     goto done;
1704 siliconforks 116 }
1705    
1706     /* the key must be a string representing the file */
1707     JSParseNode * key = p->pn_left;
1708     if (key->pn_type != TOK_STRING || ! ATOM_IS_STRING(key->pn_atom)) {
1709 siliconforks 336 result = -1;
1710     goto done;
1711 siliconforks 116 }
1712     char * id_bytes = JS_GetStringBytes(ATOM_TO_STRING(key->pn_atom));
1713    
1714     /* the value must be an object literal OR an array */
1715     JSParseNode * value = p->pn_right;
1716     if (! (value->pn_type == TOK_RC || value->pn_type == TOK_RB)) {
1717 siliconforks 336 result = -1;
1718     goto done;
1719 siliconforks 116 }
1720    
1721     JSParseNode * array = NULL;
1722     JSParseNode * source = NULL;
1723     if (value->pn_type == TOK_RB) {
1724     /* an array */
1725     array = value;
1726     }
1727     else if (value->pn_type == TOK_RC) {
1728     /* an object literal */
1729     if (value->pn_count != 2) {
1730 siliconforks 336 result = -1;
1731     goto done;
1732 siliconforks 116 }
1733     for (JSParseNode * element = value->pn_head; element != NULL; element = element->pn_next) {
1734     if (element->pn_type != TOK_COLON) {
1735 siliconforks 336 result = -1;
1736     goto done;
1737 siliconforks 116 }
1738     JSParseNode * left = element->pn_left;
1739     if (left->pn_type != TOK_STRING || ! ATOM_IS_STRING(left->pn_atom)) {
1740 siliconforks 336 result = -1;
1741     goto done;
1742 siliconforks 116 }
1743     const char * s = JS_GetStringBytes(ATOM_TO_STRING(left->pn_atom));
1744     if (strcmp(s, "coverage") == 0) {
1745     array = element->pn_right;
1746     if (array->pn_type != TOK_RB) {
1747 siliconforks 336 result = -1;
1748     goto done;
1749 siliconforks 116 }
1750     }
1751     else if (strcmp(s, "source") == 0) {
1752     source = element->pn_right;
1753 siliconforks 179 if (source->pn_type != TOK_RB) {
1754 siliconforks 336 result = -1;
1755     goto done;
1756 siliconforks 116 }
1757     }
1758     else {
1759 siliconforks 336 result = -1;
1760     goto done;
1761 siliconforks 116 }
1762     }
1763     }
1764     else {
1765 siliconforks 336 result = -1;
1766     goto done;
1767 siliconforks 116 }
1768    
1769     if (array == NULL) {
1770 siliconforks 336 result = -1;
1771     goto done;
1772 siliconforks 116 }
1773    
1774     /* look up the file in the coverage table */
1775     FileCoverage * file_coverage = JS_HashTableLookup(coverage->coverage_table, id_bytes);
1776     if (file_coverage == NULL) {
1777     /* not there: create a new one */
1778     char * id = xstrdup(id_bytes);
1779     file_coverage = xmalloc(sizeof(FileCoverage));
1780     file_coverage->id = id;
1781 siliconforks 179 file_coverage->num_coverage_lines = array->pn_count;
1782     file_coverage->coverage_lines = xnew(int, array->pn_count);
1783 siliconforks 245 file_coverage->source_lines = NULL;
1784 siliconforks 116
1785     /* set coverage for all lines */
1786     uint32 i = 0;
1787     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1788     if (element->pn_type == TOK_NUMBER) {
1789 siliconforks 179 file_coverage->coverage_lines[i] = (int) element->pn_dval;
1790 siliconforks 116 }
1791     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1792 siliconforks 179 file_coverage->coverage_lines[i] = -1;
1793 siliconforks 116 }
1794     else {
1795 siliconforks 336 result = -1;
1796     goto done;
1797 siliconforks 116 }
1798     }
1799     assert(i == array->pn_count);
1800    
1801     /* add to the hash table */
1802     JS_HashTableAdd(coverage->coverage_table, id, file_coverage);
1803     struct FileCoverageList * coverage_list = xmalloc(sizeof(struct FileCoverageList));
1804     coverage_list->file_coverage = file_coverage;
1805     coverage_list->next = coverage->coverage_list;
1806     coverage->coverage_list = coverage_list;
1807     }
1808     else {
1809     /* sanity check */
1810     assert(strcmp(file_coverage->id, id_bytes) == 0);
1811 siliconforks 179 if (file_coverage->num_coverage_lines != array->pn_count) {
1812 siliconforks 336 result = -2;
1813     goto done;
1814 siliconforks 116 }
1815    
1816     /* merge the coverage */
1817     uint32 i = 0;
1818     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1819     if (element->pn_type == TOK_NUMBER) {
1820 siliconforks 179 if (file_coverage->coverage_lines[i] == -1) {
1821 siliconforks 336 result = -2;
1822     goto done;
1823 siliconforks 116 }
1824 siliconforks 179 file_coverage->coverage_lines[i] += (int) element->pn_dval;
1825 siliconforks 116 }
1826     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1827 siliconforks 179 if (file_coverage->coverage_lines[i] != -1) {
1828 siliconforks 336 result = -2;
1829     goto done;
1830 siliconforks 116 }
1831     }
1832     else {
1833 siliconforks 336 result = -1;
1834     goto done;
1835 siliconforks 116 }
1836     }
1837     assert(i == array->pn_count);
1838 siliconforks 245 }
1839 siliconforks 116
1840 siliconforks 245 /* if this JSON file has source, use it */
1841     if (file_coverage->source_lines == NULL && source != NULL) {
1842     file_coverage->num_source_lines = source->pn_count;
1843     file_coverage->source_lines = xnew(char *, source->pn_count);
1844     uint32 i = 0;
1845     for (JSParseNode * element = source->pn_head; element != NULL; element = element->pn_next, i++) {
1846     if (element->pn_type != TOK_STRING) {
1847 siliconforks 336 result = -1;
1848     goto done;
1849 siliconforks 179 }
1850 siliconforks 245 file_coverage->source_lines[i] = xstrdup(JS_GetStringBytes(ATOM_TO_STRING(element->pn_atom)));
1851 siliconforks 116 }
1852 siliconforks 245 assert(i == source->pn_count);
1853 siliconforks 116 }
1854     }
1855    
1856 siliconforks 336 done:
1857     js_FinishParseContext(context, &parse_context);
1858     return result;
1859 siliconforks 116 }

  ViewVC Help
Powered by ViewVC 1.1.24