/[jscoverage]/trunk/instrument-js.cpp
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Annotation of /trunk/instrument-js.cpp

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Revision 376 - (hide annotations)
Tue Oct 28 05:30:23 2008 UTC (10 years, 11 months ago) by siliconforks
Original Path: trunk/instrument-js.c
File MIME type: text/plain
File size: 54246 byte(s)
Fix bug with labelled blocks.
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     #include <stdlib.h>
26     #include <string.h>
27    
28     #include <jsapi.h>
29 siliconforks 336 #include <jsarena.h>
30 siliconforks 2 #include <jsatom.h>
31 siliconforks 351 #include <jsemit.h>
32 siliconforks 284 #include <jsexn.h>
33 siliconforks 2 #include <jsfun.h>
34     #include <jsinterp.h>
35 siliconforks 339 #include <jsiter.h>
36 siliconforks 2 #include <jsparse.h>
37     #include <jsregexp.h>
38     #include <jsscope.h>
39     #include <jsstr.h>
40    
41 siliconforks 174 #include "encoding.h"
42 siliconforks 179 #include "global.h"
43     #include "highlight.h"
44 siliconforks 116 #include "resource-manager.h"
45 siliconforks 2 #include "util.h"
46    
47 siliconforks 240 struct IfDirective {
48     const jschar * condition_start;
49     const jschar * condition_end;
50     uint16_t start_line;
51     uint16_t end_line;
52     struct IfDirective * next;
53     };
54    
55 siliconforks 361 bool jscoverage_mozilla = false;
56    
57 siliconforks 240 static bool * exclusive_directives = NULL;
58    
59 siliconforks 2 static JSRuntime * runtime = NULL;
60     static JSContext * context = NULL;
61     static JSObject * global = NULL;
62 siliconforks 339 static JSVersion js_version = JSVERSION_ECMA_3;
63 siliconforks 2
64     /*
65     JSParseNode objects store line numbers starting from 1.
66     The lines array stores line numbers starting from 0.
67     */
68     static const char * file_id = NULL;
69     static char * lines = NULL;
70 siliconforks 214 static uint16_t num_lines = 0;
71 siliconforks 2
72 siliconforks 339 void jscoverage_set_js_version(const char * version) {
73 siliconforks 369 js_version = JS_StringToVersion(version);
74     if (js_version != JSVERSION_UNKNOWN) {
75     return;
76     }
77    
78     char * end;
79     js_version = (JSVersion) strtol(version, &end, 10);
80 siliconforks 370 if ((size_t) (end - version) != strlen(version)) {
81 siliconforks 369 fatal("invalid version: %s", version);
82     }
83 siliconforks 339 }
84    
85 siliconforks 2 void jscoverage_init(void) {
86     runtime = JS_NewRuntime(8L * 1024L * 1024L);
87     if (runtime == NULL) {
88     fatal("cannot create runtime");
89     }
90    
91     context = JS_NewContext(runtime, 8192);
92     if (context == NULL) {
93     fatal("cannot create context");
94     }
95    
96 siliconforks 339 JS_SetVersion(context, js_version);
97    
98 siliconforks 2 global = JS_NewObject(context, NULL, NULL, NULL);
99     if (global == NULL) {
100     fatal("cannot create global object");
101     }
102    
103     if (! JS_InitStandardClasses(context, global)) {
104     fatal("cannot initialize standard classes");
105     }
106     }
107    
108     void jscoverage_cleanup(void) {
109     JS_DestroyContext(context);
110     JS_DestroyRuntime(runtime);
111     }
112    
113 siliconforks 246 static void print_javascript(const jschar * characters, size_t num_characters, Stream * f) {
114     for (size_t i = 0; i < num_characters; i++) {
115     jschar c = characters[i];
116     /*
117     XXX does not handle no-break space, other unicode "space separator"
118     */
119     switch (c) {
120     case 0x9:
121     case 0xB:
122     case 0xC:
123     Stream_write_char(f, c);
124     break;
125     default:
126     if (32 <= c && c <= 126) {
127     Stream_write_char(f, c);
128     }
129     else {
130     Stream_printf(f, "\\u%04x", c);
131     }
132     break;
133     }
134     }
135     }
136    
137 siliconforks 92 static void print_string(JSString * s, Stream * f) {
138 siliconforks 174 size_t length = JSSTRING_LENGTH(s);
139     jschar * characters = JSSTRING_CHARS(s);
140     for (size_t i = 0; i < length; i++) {
141     jschar c = characters[i];
142     if (32 <= c && c <= 126) {
143     switch (c) {
144     case '"':
145     Stream_write_string(f, "\\\"");
146     break;
147     /*
148     case '\'':
149     Stream_write_string(f, "\\'");
150     break;
151     */
152     case '\\':
153     Stream_write_string(f, "\\\\");
154     break;
155     default:
156     Stream_write_char(f, c);
157     break;
158     }
159     }
160     else {
161     switch (c) {
162     case 0x8:
163     Stream_write_string(f, "\\b");
164     break;
165     case 0x9:
166     Stream_write_string(f, "\\t");
167     break;
168     case 0xa:
169     Stream_write_string(f, "\\n");
170     break;
171 siliconforks 317 /* IE doesn't support this */
172     /*
173 siliconforks 174 case 0xb:
174     Stream_write_string(f, "\\v");
175     break;
176 siliconforks 317 */
177 siliconforks 174 case 0xc:
178     Stream_write_string(f, "\\f");
179     break;
180     case 0xd:
181     Stream_write_string(f, "\\r");
182     break;
183     default:
184     Stream_printf(f, "\\u%04x", c);
185     break;
186     }
187     }
188 siliconforks 2 }
189     }
190    
191 siliconforks 92 static void print_string_atom(JSAtom * atom, Stream * f) {
192 siliconforks 2 assert(ATOM_IS_STRING(atom));
193     JSString * s = ATOM_TO_STRING(atom);
194     print_string(s, f);
195     }
196    
197 siliconforks 174 static void print_regex(jsval value, Stream * f) {
198 siliconforks 2 assert(JSVAL_IS_STRING(value));
199     JSString * s = JSVAL_TO_STRING(value);
200 siliconforks 174 size_t length = JSSTRING_LENGTH(s);
201     jschar * characters = JSSTRING_CHARS(s);
202     for (size_t i = 0; i < length; i++) {
203     jschar c = characters[i];
204     if (32 <= c && c <= 126) {
205     Stream_write_char(f, c);
206     }
207     else {
208     Stream_printf(f, "\\u%04x", c);
209     }
210     }
211 siliconforks 2 }
212    
213 siliconforks 92 static void print_quoted_string_atom(JSAtom * atom, Stream * f) {
214 siliconforks 2 assert(ATOM_IS_STRING(atom));
215     JSString * s = ATOM_TO_STRING(atom);
216 siliconforks 174 Stream_write_char(f, '"');
217     print_string(s, f);
218     Stream_write_char(f, '"');
219 siliconforks 2 }
220    
221     static const char * get_op(uint8 op) {
222     switch(op) {
223 siliconforks 336 case JSOP_OR:
224     return "||";
225     case JSOP_AND:
226     return "&&";
227 siliconforks 2 case JSOP_BITOR:
228     return "|";
229     case JSOP_BITXOR:
230     return "^";
231     case JSOP_BITAND:
232     return "&";
233     case JSOP_EQ:
234     return "==";
235     case JSOP_NE:
236     return "!=";
237 siliconforks 336 case JSOP_STRICTEQ:
238 siliconforks 2 return "===";
239 siliconforks 336 case JSOP_STRICTNE:
240 siliconforks 2 return "!==";
241     case JSOP_LT:
242     return "<";
243     case JSOP_LE:
244     return "<=";
245     case JSOP_GT:
246     return ">";
247     case JSOP_GE:
248     return ">=";
249     case JSOP_LSH:
250     return "<<";
251     case JSOP_RSH:
252     return ">>";
253     case JSOP_URSH:
254     return ">>>";
255     case JSOP_ADD:
256     return "+";
257     case JSOP_SUB:
258     return "-";
259     case JSOP_MUL:
260     return "*";
261     case JSOP_DIV:
262     return "/";
263     case JSOP_MOD:
264     return "%";
265     default:
266     abort();
267     }
268     }
269    
270 siliconforks 92 static void instrument_expression(JSParseNode * node, Stream * f);
271 siliconforks 240 static void instrument_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if);
272 siliconforks 345 static void output_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if);
273 siliconforks 2
274 siliconforks 155 enum FunctionType {
275     FUNCTION_NORMAL,
276     FUNCTION_GETTER_OR_SETTER
277     };
278    
279 siliconforks 346 static void output_for_in(JSParseNode * node, Stream * f) {
280     assert(node->pn_type == TOK_FOR);
281     assert(node->pn_arity == PN_BINARY);
282     Stream_write_string(f, "for ");
283     if (node->pn_iflags & JSITER_FOREACH) {
284     Stream_write_string(f, "each ");
285     }
286     Stream_write_char(f, '(');
287     instrument_expression(node->pn_left, f);
288     Stream_write_char(f, ')');
289     }
290    
291 siliconforks 357 static void output_array_comprehension_or_generator_expression(JSParseNode * node, Stream * f) {
292     assert(node->pn_type == TOK_LEXICALSCOPE);
293     assert(node->pn_arity == PN_NAME);
294     JSParseNode * for_node = node->pn_expr;
295     assert(for_node->pn_type == TOK_FOR);
296     assert(for_node->pn_arity == PN_BINARY);
297     JSParseNode * p = for_node;
298     while (p->pn_type == TOK_FOR) {
299     p = p->pn_right;
300     }
301     JSParseNode * if_node = NULL;
302     if (p->pn_type == TOK_IF) {
303     if_node = p;
304     assert(if_node->pn_arity == PN_TERNARY);
305     p = if_node->pn_kid2;
306     }
307     assert(p->pn_arity == PN_UNARY);
308     p = p->pn_kid;
309     if (p->pn_type == TOK_YIELD) {
310     /* for generator expressions */
311     p = p->pn_kid;
312     }
313    
314     instrument_expression(p, f);
315     p = for_node;
316     while (p->pn_type == TOK_FOR) {
317     Stream_write_char(f, ' ');
318     output_for_in(p, f);
319     p = p->pn_right;
320     }
321     if (if_node) {
322     Stream_write_string(f, " if (");
323     instrument_expression(if_node->pn_kid1, f);
324     Stream_write_char(f, ')');
325     }
326     }
327    
328 siliconforks 155 static void instrument_function(JSParseNode * node, Stream * f, int indent, enum FunctionType type) {
329 siliconforks 336 assert(node->pn_type == TOK_FUNCTION);
330 siliconforks 156 assert(node->pn_arity == PN_FUNC);
331 siliconforks 336 JSObject * object = node->pn_funpob->object;
332 siliconforks 156 assert(JS_ObjectIsFunction(context, object));
333     JSFunction * function = (JSFunction *) JS_GetPrivate(context, object);
334     assert(function);
335 siliconforks 336 assert(object == &function->object);
336 siliconforks 156 Stream_printf(f, "%*s", indent, "");
337     if (type == FUNCTION_NORMAL) {
338 siliconforks 371 Stream_write_string(f, "function ");
339 siliconforks 156 }
340 siliconforks 2
341 siliconforks 156 /* function name */
342     if (function->atom) {
343     print_string_atom(function->atom, f);
344     }
345 siliconforks 2
346 siliconforks 336 /*
347     function parameters - see JS_DecompileFunction in jsapi.cpp, which calls
348     js_DecompileFunction in jsopcode.cpp
349     */
350 siliconforks 371 Stream_write_char(f, '(');
351 siliconforks 336 JSArenaPool pool;
352     JS_INIT_ARENA_POOL(&pool, "instrument_function", 256, 1, &context->scriptStackQuota);
353     jsuword * local_names = NULL;
354     if (JS_GET_LOCAL_NAME_COUNT(function)) {
355     local_names = js_GetLocalNameArray(context, function, &pool);
356     if (local_names == NULL) {
357     fatal("out of memory");
358 siliconforks 2 }
359 siliconforks 156 }
360 siliconforks 373 bool destructuring = false;
361 siliconforks 156 for (int i = 0; i < function->nargs; i++) {
362     if (i > 0) {
363     Stream_write_string(f, ", ");
364 siliconforks 2 }
365 siliconforks 336 JSAtom * param = JS_LOCAL_NAME_TO_ATOM(local_names[i]);
366 siliconforks 352 if (param == NULL) {
367 siliconforks 373 destructuring = true;
368     JSParseNode * expression = NULL;
369     assert(node->pn_body->pn_type == TOK_LC || node->pn_body->pn_type == TOK_BODY);
370     JSParseNode * semi = node->pn_body->pn_head;
371     assert(semi->pn_type == TOK_SEMI);
372     JSParseNode * comma = semi->pn_kid;
373     assert(comma->pn_type == TOK_COMMA);
374     for (JSParseNode * p = comma->pn_head; p != NULL; p = p->pn_next) {
375     assert(p->pn_type == TOK_ASSIGN);
376     JSParseNode * rhs = p->pn_right;
377     assert(JSSTRING_LENGTH(ATOM_TO_STRING(rhs->pn_atom)) == 0);
378     if (rhs->pn_slot == i) {
379     expression = p->pn_left;
380     break;
381     }
382     }
383     assert(expression != NULL);
384     instrument_expression(expression, f);
385 siliconforks 352 }
386 siliconforks 373 else {
387     print_string_atom(param, f);
388     }
389 siliconforks 156 }
390 siliconforks 336 JS_FinishArenaPool(&pool);
391 siliconforks 156 Stream_write_string(f, ") {\n");
392 siliconforks 2
393 siliconforks 156 /* function body */
394 siliconforks 345 if (function->flags & JSFUN_EXPR_CLOSURE) {
395 siliconforks 373 /* expression closure - use output_statement instead of instrument_statement */
396     if (node->pn_body->pn_type == TOK_BODY) {
397     assert(node->pn_body->pn_arity == PN_LIST);
398     assert(node->pn_body->pn_count == 2);
399     output_statement(node->pn_body->pn_head->pn_next, f, indent + 2, false);
400     }
401     else {
402     output_statement(node->pn_body, f, indent + 2, false);
403     }
404 siliconforks 345 }
405     else {
406 siliconforks 373 assert(node->pn_body->pn_type == TOK_LC);
407     assert(node->pn_body->pn_arity == PN_LIST);
408     JSParseNode * p = node->pn_body->pn_head;
409     if (destructuring) {
410     p = p->pn_next;
411     }
412     for (; p != NULL; p = p->pn_next) {
413     instrument_statement(p, f, indent + 2, false);
414     }
415 siliconforks 345 }
416 siliconforks 2
417 siliconforks 156 Stream_write_string(f, "}\n");
418 siliconforks 2 }
419    
420 siliconforks 92 static void instrument_function_call(JSParseNode * node, Stream * f) {
421 siliconforks 351 JSParseNode * function_node = node->pn_head;
422     if (function_node->pn_type == TOK_FUNCTION) {
423     JSObject * object = function_node->pn_funpob->object;
424     assert(JS_ObjectIsFunction(context, object));
425     JSFunction * function = (JSFunction *) JS_GetPrivate(context, object);
426     assert(function);
427     assert(object == &function->object);
428    
429     if (function_node->pn_flags & TCF_GENEXP_LAMBDA) {
430     /* it's a generator expression */
431     Stream_write_char(f, '(');
432 siliconforks 357 output_array_comprehension_or_generator_expression(function_node->pn_body, f);
433 siliconforks 351 Stream_write_char(f, ')');
434     return;
435 siliconforks 2 }
436 siliconforks 351 else {
437     Stream_write_char(f, '(');
438     instrument_expression(function_node, f);
439 siliconforks 346 Stream_write_char(f, ')');
440     }
441 siliconforks 2 }
442 siliconforks 346 else {
443 siliconforks 351 instrument_expression(function_node, f);
444     }
445     Stream_write_char(f, '(');
446     for (struct JSParseNode * p = function_node->pn_next; p != NULL; p = p->pn_next) {
447     if (p != node->pn_head->pn_next) {
448     Stream_write_string(f, ", ");
449 siliconforks 346 }
450 siliconforks 351 instrument_expression(p, f);
451 siliconforks 346 }
452 siliconforks 351 Stream_write_char(f, ')');
453 siliconforks 2 }
454    
455 siliconforks 340 static void instrument_declarations(JSParseNode * list, Stream * f) {
456     assert(list->pn_arity == PN_LIST);
457     for (JSParseNode * p = list->pn_head; p != NULL; p = p->pn_next) {
458 siliconforks 341 switch (p->pn_type) {
459     case TOK_NAME:
460     assert(p->pn_arity == PN_NAME);
461     if (p != list->pn_head) {
462     Stream_write_string(f, ", ");
463     }
464     print_string_atom(p->pn_atom, f);
465     if (p->pn_expr != NULL) {
466     Stream_write_string(f, " = ");
467     instrument_expression(p->pn_expr, f);
468     }
469     break;
470     case TOK_ASSIGN:
471 siliconforks 374 /* destructuring */
472     instrument_expression(p->pn_left, f);
473     Stream_write_string(f, " = ");
474     instrument_expression(p->pn_right, f);
475     break;
476 siliconforks 341 case TOK_RB:
477     case TOK_RC:
478     /* destructuring */
479     instrument_expression(p, f);
480     break;
481     default:
482     abort();
483     break;
484 siliconforks 340 }
485     }
486     }
487    
488 siliconforks 2 /*
489     See <Expressions> in jsparse.h.
490     TOK_FUNCTION is handled as a statement and as an expression.
491     TOK_DBLDOT is not handled (XML op).
492     TOK_DEFSHARP and TOK_USESHARP are not handled.
493     TOK_ANYNAME is not handled (XML op).
494     TOK_AT is not handled (XML op).
495     TOK_DBLCOLON is not handled.
496     TOK_XML* are not handled.
497     There seem to be some undocumented expressions:
498     TOK_INSTANCEOF binary
499     TOK_IN binary
500     */
501 siliconforks 92 static void instrument_expression(JSParseNode * node, Stream * f) {
502 siliconforks 2 switch (node->pn_type) {
503     case TOK_FUNCTION:
504 siliconforks 155 instrument_function(node, f, 0, FUNCTION_NORMAL);
505 siliconforks 2 break;
506     case TOK_COMMA:
507     for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
508     if (p != node->pn_head) {
509 siliconforks 92 Stream_write_string(f, ", ");
510 siliconforks 2 }
511     instrument_expression(p, f);
512     }
513     break;
514     case TOK_ASSIGN:
515 siliconforks 374 if (node->pn_left->pn_type == TOK_RC) {
516     /* destructuring assignment with object literal must be in parentheses */
517     Stream_write_char(f, '(');
518     instrument_expression(node->pn_left, f);
519     Stream_write_char(f, ')');
520     }
521     else {
522     instrument_expression(node->pn_left, f);
523     }
524 siliconforks 92 Stream_write_char(f, ' ');
525 siliconforks 2 switch (node->pn_op) {
526     case JSOP_ADD:
527     case JSOP_SUB:
528     case JSOP_MUL:
529     case JSOP_MOD:
530     case JSOP_LSH:
531     case JSOP_RSH:
532     case JSOP_URSH:
533     case JSOP_BITAND:
534     case JSOP_BITOR:
535     case JSOP_BITXOR:
536     case JSOP_DIV:
537 siliconforks 92 Stream_printf(f, "%s", get_op(node->pn_op));
538 siliconforks 2 break;
539     default:
540     /* do nothing - it must be a simple assignment */
541     break;
542     }
543 siliconforks 92 Stream_write_string(f, "= ");
544 siliconforks 2 instrument_expression(node->pn_right, f);
545     break;
546     case TOK_HOOK:
547     instrument_expression(node->pn_kid1, f);
548 siliconforks 92 Stream_write_string(f, "? ");
549 siliconforks 2 instrument_expression(node->pn_kid2, f);
550 siliconforks 92 Stream_write_string(f, ": ");
551 siliconforks 2 instrument_expression(node->pn_kid3, f);
552     break;
553     case TOK_OR:
554     case TOK_AND:
555     case TOK_BITOR:
556     case TOK_BITXOR:
557     case TOK_BITAND:
558     case TOK_EQOP:
559     case TOK_RELOP:
560     case TOK_SHOP:
561     case TOK_PLUS:
562     case TOK_MINUS:
563     case TOK_STAR:
564     case TOK_DIVOP:
565     switch (node->pn_arity) {
566     case PN_BINARY:
567     instrument_expression(node->pn_left, f);
568 siliconforks 92 Stream_printf(f, " %s ", get_op(node->pn_op));
569 siliconforks 2 instrument_expression(node->pn_right, f);
570     break;
571     case PN_LIST:
572     for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
573     if (p != node->pn_head) {
574 siliconforks 92 Stream_printf(f, " %s ", get_op(node->pn_op));
575 siliconforks 2 }
576     instrument_expression(p, f);
577     }
578     break;
579     default:
580     abort();
581     }
582     break;
583     case TOK_UNARYOP:
584     switch (node->pn_op) {
585     case JSOP_NEG:
586 siliconforks 92 Stream_write_char(f, '-');
587 siliconforks 2 instrument_expression(node->pn_kid, f);
588     break;
589     case JSOP_POS:
590 siliconforks 92 Stream_write_char(f, '+');
591 siliconforks 2 instrument_expression(node->pn_kid, f);
592     break;
593     case JSOP_NOT:
594 siliconforks 92 Stream_write_char(f, '!');
595 siliconforks 2 instrument_expression(node->pn_kid, f);
596     break;
597     case JSOP_BITNOT:
598 siliconforks 92 Stream_write_char(f, '~');
599 siliconforks 2 instrument_expression(node->pn_kid, f);
600     break;
601     case JSOP_TYPEOF:
602 siliconforks 92 Stream_write_string(f, "typeof ");
603 siliconforks 2 instrument_expression(node->pn_kid, f);
604     break;
605     case JSOP_VOID:
606 siliconforks 92 Stream_write_string(f, "void ");
607 siliconforks 2 instrument_expression(node->pn_kid, f);
608     break;
609     default:
610 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unknown operator (%d)", node->pn_op);
611 siliconforks 2 break;
612     }
613     break;
614     case TOK_INC:
615     case TOK_DEC:
616     /*
617     This is not documented, but node->pn_op tells whether it is pre- or post-increment.
618     */
619     switch (node->pn_op) {
620     case JSOP_INCNAME:
621     case JSOP_INCPROP:
622     case JSOP_INCELEM:
623 siliconforks 92 Stream_write_string(f, "++");
624 siliconforks 2 instrument_expression(node->pn_kid, f);
625     break;
626     case JSOP_DECNAME:
627     case JSOP_DECPROP:
628     case JSOP_DECELEM:
629 siliconforks 92 Stream_write_string(f, "--");
630 siliconforks 2 instrument_expression(node->pn_kid, f);
631     break;
632     case JSOP_NAMEINC:
633     case JSOP_PROPINC:
634     case JSOP_ELEMINC:
635     instrument_expression(node->pn_kid, f);
636 siliconforks 92 Stream_write_string(f, "++");
637 siliconforks 2 break;
638     case JSOP_NAMEDEC:
639     case JSOP_PROPDEC:
640     case JSOP_ELEMDEC:
641     instrument_expression(node->pn_kid, f);
642 siliconforks 92 Stream_write_string(f, "--");
643 siliconforks 2 break;
644     default:
645     abort();
646     break;
647     }
648     break;
649     case TOK_NEW:
650 siliconforks 92 Stream_write_string(f, "new ");
651 siliconforks 2 instrument_function_call(node, f);
652     break;
653     case TOK_DELETE:
654 siliconforks 92 Stream_write_string(f, "delete ");
655 siliconforks 2 instrument_expression(node->pn_kid, f);
656     break;
657     case TOK_DOT:
658 siliconforks 375 /* numeric literals must be parenthesized */
659     if (node->pn_expr->pn_type == TOK_NUMBER) {
660     Stream_write_char(f, '(');
661     instrument_expression(node->pn_expr, f);
662     Stream_write_char(f, ')');
663     }
664     else {
665     instrument_expression(node->pn_expr, f);
666     }
667 siliconforks 2 /*
668     This may have originally been x['foo-bar']. Because the string 'foo-bar'
669     contains illegal characters, we have to use the subscript syntax instead of
670     the dot syntax.
671     */
672 siliconforks 84 assert(ATOM_IS_STRING(node->pn_atom));
673     {
674     JSString * s = ATOM_TO_STRING(node->pn_atom);
675 siliconforks 349 bool must_quote;
676     if (JSSTRING_LENGTH(s) == 0) {
677     must_quote = true;
678 siliconforks 84 }
679 siliconforks 349 else if (js_CheckKeyword(JSSTRING_CHARS(s), JSSTRING_LENGTH(s)) != TOK_EOF) {
680     must_quote = true;
681     }
682     else if (! js_IsIdentifier(s)) {
683     must_quote = true;
684     }
685 siliconforks 84 else {
686 siliconforks 349 must_quote = false;
687     }
688     if (must_quote) {
689 siliconforks 92 Stream_write_char(f, '[');
690 siliconforks 84 print_quoted_string_atom(node->pn_atom, f);
691 siliconforks 92 Stream_write_char(f, ']');
692 siliconforks 84 }
693 siliconforks 349 else {
694     Stream_write_char(f, '.');
695     print_string_atom(node->pn_atom, f);
696     }
697 siliconforks 84 }
698 siliconforks 2 break;
699     case TOK_LB:
700     instrument_expression(node->pn_left, f);
701 siliconforks 92 Stream_write_char(f, '[');
702 siliconforks 2 instrument_expression(node->pn_right, f);
703 siliconforks 92 Stream_write_char(f, ']');
704 siliconforks 2 break;
705     case TOK_LP:
706     instrument_function_call(node, f);
707     break;
708     case TOK_RB:
709 siliconforks 92 Stream_write_char(f, '[');
710 siliconforks 2 for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
711     if (p != node->pn_head) {
712 siliconforks 92 Stream_write_string(f, ", ");
713 siliconforks 2 }
714     /* TOK_COMMA is a special case: a hole in the array */
715     if (p->pn_type != TOK_COMMA) {
716     instrument_expression(p, f);
717     }
718     }
719     if (node->pn_extra == PNX_ENDCOMMA) {
720 siliconforks 92 Stream_write_char(f, ',');
721 siliconforks 2 }
722 siliconforks 92 Stream_write_char(f, ']');
723 siliconforks 2 break;
724     case TOK_RC:
725 siliconforks 92 Stream_write_char(f, '{');
726 siliconforks 2 for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
727 siliconforks 353 if (p->pn_type != TOK_COLON) {
728 siliconforks 370 fatal_source(file_id, p->pn_pos.begin.lineno, "unsupported node type (%d)", p->pn_type);
729 siliconforks 353 }
730 siliconforks 2 if (p != node->pn_head) {
731 siliconforks 92 Stream_write_string(f, ", ");
732 siliconforks 2 }
733 siliconforks 155
734     /* check whether this is a getter or setter */
735     switch (p->pn_op) {
736     case JSOP_GETTER:
737     case JSOP_SETTER:
738 siliconforks 293 if (p->pn_op == JSOP_GETTER) {
739     Stream_write_string(f, "get ");
740     }
741     else {
742     Stream_write_string(f, "set ");
743     }
744 siliconforks 155 instrument_expression(p->pn_left, f);
745 siliconforks 293 if (p->pn_right->pn_type != TOK_FUNCTION) {
746 siliconforks 370 fatal_source(file_id, p->pn_pos.begin.lineno, "expected function");
747 siliconforks 293 }
748 siliconforks 155 instrument_function(p->pn_right, f, 0, FUNCTION_GETTER_OR_SETTER);
749     break;
750     default:
751     instrument_expression(p->pn_left, f);
752     Stream_write_string(f, ": ");
753     instrument_expression(p->pn_right, f);
754     break;
755     }
756 siliconforks 2 }
757 siliconforks 92 Stream_write_char(f, '}');
758 siliconforks 2 break;
759     case TOK_RP:
760 siliconforks 92 Stream_write_char(f, '(');
761 siliconforks 2 instrument_expression(node->pn_kid, f);
762 siliconforks 92 Stream_write_char(f, ')');
763 siliconforks 2 break;
764     case TOK_NAME:
765     print_string_atom(node->pn_atom, f);
766     break;
767     case TOK_STRING:
768     print_quoted_string_atom(node->pn_atom, f);
769     break;
770 siliconforks 336 case TOK_REGEXP:
771     assert(node->pn_op == JSOP_REGEXP);
772     {
773     JSObject * object = node->pn_pob->object;
774     jsval result;
775     js_regexp_toString(context, object, &result);
776     print_regex(result, f);
777 siliconforks 2 }
778     break;
779     case TOK_NUMBER:
780     /*
781     A 64-bit IEEE 754 floating point number has a 52-bit fraction.
782     2^(-52) = 2.22 x 10^(-16)
783     Thus there are 16 significant digits.
784     To keep the output simple, special-case zero.
785     */
786     if (node->pn_dval == 0.0) {
787 siliconforks 92 Stream_write_string(f, "0");
788 siliconforks 2 }
789     else {
790 siliconforks 92 Stream_printf(f, "%.15g", node->pn_dval);
791 siliconforks 2 }
792     break;
793     case TOK_PRIMARY:
794     switch (node->pn_op) {
795     case JSOP_TRUE:
796 siliconforks 92 Stream_write_string(f, "true");
797 siliconforks 2 break;
798     case JSOP_FALSE:
799 siliconforks 92 Stream_write_string(f, "false");
800 siliconforks 2 break;
801     case JSOP_NULL:
802 siliconforks 92 Stream_write_string(f, "null");
803 siliconforks 2 break;
804     case JSOP_THIS:
805 siliconforks 92 Stream_write_string(f, "this");
806 siliconforks 2 break;
807     /* jsscan.h mentions `super' ??? */
808     default:
809     abort();
810     }
811     break;
812     case TOK_INSTANCEOF:
813     instrument_expression(node->pn_left, f);
814 siliconforks 92 Stream_write_string(f, " instanceof ");
815 siliconforks 2 instrument_expression(node->pn_right, f);
816     break;
817     case TOK_IN:
818     instrument_expression(node->pn_left, f);
819 siliconforks 92 Stream_write_string(f, " in ");
820 siliconforks 2 instrument_expression(node->pn_right, f);
821     break;
822 siliconforks 340 case TOK_LEXICALSCOPE:
823     assert(node->pn_arity == PN_NAME);
824     assert(node->pn_expr->pn_type == TOK_LET);
825     assert(node->pn_expr->pn_arity == PN_BINARY);
826     Stream_write_string(f, "let(");
827     assert(node->pn_expr->pn_left->pn_type == TOK_LP);
828     assert(node->pn_expr->pn_left->pn_arity == PN_LIST);
829     instrument_declarations(node->pn_expr->pn_left, f);
830     Stream_write_string(f, ") ");
831     instrument_expression(node->pn_expr->pn_right, f);
832     break;
833 siliconforks 342 case TOK_YIELD:
834     assert(node->pn_arity == PN_UNARY);
835 siliconforks 355 Stream_write_string(f, "yield");
836     if (node->pn_kid != NULL) {
837     Stream_write_char(f, ' ');
838     instrument_expression(node->pn_kid, f);
839     }
840 siliconforks 342 break;
841 siliconforks 343 case TOK_ARRAYCOMP:
842     assert(node->pn_arity == PN_LIST);
843     {
844     JSParseNode * block_node;
845     switch (node->pn_count) {
846     case 1:
847     block_node = node->pn_head;
848     break;
849     case 2:
850     block_node = node->pn_head->pn_next;
851     break;
852     default:
853     abort();
854     break;
855     }
856     Stream_write_char(f, '[');
857 siliconforks 357 output_array_comprehension_or_generator_expression(block_node, f);
858 siliconforks 343 Stream_write_char(f, ']');
859     }
860     break;
861     case TOK_VAR:
862     assert(node->pn_arity == PN_LIST);
863     Stream_write_string(f, "var ");
864     instrument_declarations(node, f);
865     break;
866     case TOK_LET:
867     assert(node->pn_arity == PN_LIST);
868     Stream_write_string(f, "let ");
869     instrument_declarations(node, f);
870     break;
871 siliconforks 2 default:
872 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
873 siliconforks 2 }
874     }
875    
876 siliconforks 240 static void output_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
877 siliconforks 2 switch (node->pn_type) {
878     case TOK_FUNCTION:
879 siliconforks 155 instrument_function(node, f, indent, FUNCTION_NORMAL);
880 siliconforks 2 break;
881     case TOK_LC:
882     assert(node->pn_arity == PN_LIST);
883     /*
884 siliconforks 92 Stream_write_string(f, "{\n");
885 siliconforks 2 */
886     for (struct JSParseNode * p = node->pn_u.list.head; p != NULL; p = p->pn_next) {
887 siliconforks 240 instrument_statement(p, f, indent, false);
888 siliconforks 2 }
889     /*
890 siliconforks 92 Stream_printf(f, "%*s", indent, "");
891     Stream_write_string(f, "}\n");
892 siliconforks 2 */
893     break;
894     case TOK_IF:
895 siliconforks 240 {
896 siliconforks 2 assert(node->pn_arity == PN_TERNARY);
897 siliconforks 240
898     uint16_t line = node->pn_pos.begin.lineno;
899     if (! is_jscoverage_if) {
900     if (line > num_lines) {
901 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
902 siliconforks 240 }
903     if (line >= 2 && exclusive_directives[line - 2]) {
904     is_jscoverage_if = true;
905     }
906     }
907    
908 siliconforks 92 Stream_printf(f, "%*s", indent, "");
909     Stream_write_string(f, "if (");
910 siliconforks 2 instrument_expression(node->pn_kid1, f);
911 siliconforks 92 Stream_write_string(f, ") {\n");
912 siliconforks 240 if (is_jscoverage_if && node->pn_kid3) {
913     uint16_t else_start = node->pn_kid3->pn_pos.begin.lineno;
914     uint16_t else_end = node->pn_kid3->pn_pos.end.lineno + 1;
915     Stream_printf(f, "%*s", indent + 2, "");
916     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, else_start, else_end);
917     }
918     instrument_statement(node->pn_kid2, f, indent + 2, false);
919 siliconforks 92 Stream_printf(f, "%*s", indent, "");
920     Stream_write_string(f, "}\n");
921 siliconforks 240
922     if (node->pn_kid3 || is_jscoverage_if) {
923 siliconforks 92 Stream_printf(f, "%*s", indent, "");
924     Stream_write_string(f, "else {\n");
925 siliconforks 240
926     if (is_jscoverage_if) {
927     uint16_t if_start = node->pn_kid2->pn_pos.begin.lineno + 1;
928     uint16_t if_end = node->pn_kid2->pn_pos.end.lineno + 1;
929     Stream_printf(f, "%*s", indent + 2, "");
930     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_start, if_end);
931     }
932    
933     if (node->pn_kid3) {
934     instrument_statement(node->pn_kid3, f, indent + 2, is_jscoverage_if);
935     }
936    
937 siliconforks 92 Stream_printf(f, "%*s", indent, "");
938     Stream_write_string(f, "}\n");
939 siliconforks 2 }
940 siliconforks 240
941 siliconforks 2 break;
942 siliconforks 240 }
943 siliconforks 2 case TOK_SWITCH:
944     assert(node->pn_arity == PN_BINARY);
945 siliconforks 92 Stream_printf(f, "%*s", indent, "");
946     Stream_write_string(f, "switch (");
947 siliconforks 2 instrument_expression(node->pn_left, f);
948 siliconforks 92 Stream_write_string(f, ") {\n");
949 siliconforks 350 {
950     JSParseNode * list = node->pn_right;
951     if (list->pn_type == TOK_LEXICALSCOPE) {
952     list = list->pn_expr;
953 siliconforks 2 }
954 siliconforks 350 for (struct JSParseNode * p = list->pn_head; p != NULL; p = p->pn_next) {
955     Stream_printf(f, "%*s", indent, "");
956     switch (p->pn_type) {
957     case TOK_CASE:
958     Stream_write_string(f, "case ");
959     instrument_expression(p->pn_left, f);
960     Stream_write_string(f, ":\n");
961     break;
962     case TOK_DEFAULT:
963     Stream_write_string(f, "default:\n");
964     break;
965     default:
966     abort();
967     break;
968     }
969     instrument_statement(p->pn_right, f, indent + 2, false);
970     }
971 siliconforks 2 }
972 siliconforks 92 Stream_printf(f, "%*s", indent, "");
973     Stream_write_string(f, "}\n");
974 siliconforks 2 break;
975     case TOK_CASE:
976     case TOK_DEFAULT:
977     abort();
978     break;
979     case TOK_WHILE:
980     assert(node->pn_arity == PN_BINARY);
981 siliconforks 92 Stream_printf(f, "%*s", indent, "");
982     Stream_write_string(f, "while (");
983 siliconforks 2 instrument_expression(node->pn_left, f);
984 siliconforks 92 Stream_write_string(f, ") {\n");
985 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
986 siliconforks 92 Stream_write_string(f, "}\n");
987 siliconforks 2 break;
988     case TOK_DO:
989     assert(node->pn_arity == PN_BINARY);
990 siliconforks 92 Stream_printf(f, "%*s", indent, "");
991     Stream_write_string(f, "do {\n");
992 siliconforks 240 instrument_statement(node->pn_left, f, indent + 2, false);
993 siliconforks 92 Stream_write_string(f, "}\n");
994     Stream_printf(f, "%*s", indent, "");
995     Stream_write_string(f, "while (");
996 siliconforks 2 instrument_expression(node->pn_right, f);
997 siliconforks 92 Stream_write_string(f, ");\n");
998 siliconforks 2 break;
999     case TOK_FOR:
1000     assert(node->pn_arity == PN_BINARY);
1001 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1002 siliconforks 2 switch (node->pn_left->pn_type) {
1003     case TOK_IN:
1004     /* for/in */
1005     assert(node->pn_left->pn_arity == PN_BINARY);
1006 siliconforks 343 output_for_in(node, f);
1007 siliconforks 2 break;
1008     case TOK_RESERVED:
1009     /* for (;;) */
1010     assert(node->pn_left->pn_arity == PN_TERNARY);
1011 siliconforks 343 Stream_write_string(f, "for (");
1012 siliconforks 2 if (node->pn_left->pn_kid1) {
1013 siliconforks 343 instrument_expression(node->pn_left->pn_kid1, f);
1014 siliconforks 2 }
1015 siliconforks 92 Stream_write_string(f, ";");
1016 siliconforks 2 if (node->pn_left->pn_kid2) {
1017 siliconforks 92 Stream_write_char(f, ' ');
1018 siliconforks 2 instrument_expression(node->pn_left->pn_kid2, f);
1019     }
1020 siliconforks 92 Stream_write_string(f, ";");
1021 siliconforks 2 if (node->pn_left->pn_kid3) {
1022 siliconforks 92 Stream_write_char(f, ' ');
1023 siliconforks 2 instrument_expression(node->pn_left->pn_kid3, f);
1024     }
1025 siliconforks 343 Stream_write_char(f, ')');
1026 siliconforks 2 break;
1027     default:
1028     abort();
1029     break;
1030     }
1031 siliconforks 343 Stream_write_string(f, " {\n");
1032 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1033 siliconforks 92 Stream_write_string(f, "}\n");
1034 siliconforks 2 break;
1035     case TOK_THROW:
1036     assert(node->pn_arity == PN_UNARY);
1037 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1038     Stream_write_string(f, "throw ");
1039 siliconforks 2 instrument_expression(node->pn_u.unary.kid, f);
1040 siliconforks 92 Stream_write_string(f, ";\n");
1041 siliconforks 2 break;
1042     case TOK_TRY:
1043 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1044     Stream_write_string(f, "try {\n");
1045 siliconforks 240 instrument_statement(node->pn_kid1, f, indent + 2, false);
1046 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1047     Stream_write_string(f, "}\n");
1048 siliconforks 336 if (node->pn_kid2) {
1049     assert(node->pn_kid2->pn_type == TOK_RESERVED);
1050     for (JSParseNode * scope = node->pn_kid2->pn_head; scope != NULL; scope = scope->pn_next) {
1051     assert(scope->pn_type == TOK_LEXICALSCOPE);
1052     JSParseNode * catch = scope->pn_expr;
1053 siliconforks 2 assert(catch->pn_type == TOK_CATCH);
1054 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1055     Stream_write_string(f, "catch (");
1056 siliconforks 341 /* this may not be a name - destructuring assignment */
1057     /*
1058 siliconforks 2 assert(catch->pn_kid1->pn_arity == PN_NAME);
1059     print_string_atom(catch->pn_kid1->pn_atom, f);
1060 siliconforks 341 */
1061     instrument_expression(catch->pn_kid1, f);
1062 siliconforks 336 if (catch->pn_kid2) {
1063 siliconforks 92 Stream_write_string(f, " if ");
1064 siliconforks 336 instrument_expression(catch->pn_kid2, f);
1065 siliconforks 2 }
1066 siliconforks 92 Stream_write_string(f, ") {\n");
1067 siliconforks 240 instrument_statement(catch->pn_kid3, f, indent + 2, false);
1068 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1069     Stream_write_string(f, "}\n");
1070 siliconforks 2 }
1071     }
1072     if (node->pn_kid3) {
1073 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1074     Stream_write_string(f, "finally {\n");
1075 siliconforks 240 instrument_statement(node->pn_kid3, f, indent + 2, false);
1076 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1077     Stream_write_string(f, "}\n");
1078 siliconforks 2 }
1079     break;
1080     case TOK_CATCH:
1081     abort();
1082     break;
1083     case TOK_BREAK:
1084     case TOK_CONTINUE:
1085     assert(node->pn_arity == PN_NAME || node->pn_arity == PN_NULLARY);
1086 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1087     Stream_write_string(f, node->pn_type == TOK_BREAK? "break": "continue");
1088 siliconforks 2 JSAtom * atom = node->pn_u.name.atom;
1089     if (atom != NULL) {
1090 siliconforks 92 Stream_write_char(f, ' ');
1091 siliconforks 2 print_string_atom(node->pn_atom, f);
1092     }
1093 siliconforks 92 Stream_write_string(f, ";\n");
1094 siliconforks 2 break;
1095     case TOK_WITH:
1096     assert(node->pn_arity == PN_BINARY);
1097 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1098     Stream_write_string(f, "with (");
1099 siliconforks 2 instrument_expression(node->pn_left, f);
1100 siliconforks 92 Stream_write_string(f, ") {\n");
1101 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1102 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1103     Stream_write_string(f, "}\n");
1104 siliconforks 2 break;
1105     case TOK_VAR:
1106 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1107     instrument_expression(node, f);
1108 siliconforks 92 Stream_write_string(f, ";\n");
1109 siliconforks 2 break;
1110     case TOK_RETURN:
1111     assert(node->pn_arity == PN_UNARY);
1112 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1113     Stream_write_string(f, "return");
1114 siliconforks 2 if (node->pn_kid != NULL) {
1115 siliconforks 92 Stream_write_char(f, ' ');
1116 siliconforks 2 instrument_expression(node->pn_kid, f);
1117     }
1118 siliconforks 92 Stream_write_string(f, ";\n");
1119 siliconforks 2 break;
1120     case TOK_SEMI:
1121     assert(node->pn_arity == PN_UNARY);
1122 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1123 siliconforks 2 if (node->pn_kid != NULL) {
1124     instrument_expression(node->pn_kid, f);
1125     }
1126 siliconforks 92 Stream_write_string(f, ";\n");
1127 siliconforks 2 break;
1128     case TOK_COLON:
1129 siliconforks 376 {
1130 siliconforks 2 assert(node->pn_arity == PN_NAME);
1131 siliconforks 92 Stream_printf(f, "%*s", indent < 2? 0: indent - 2, "");
1132 siliconforks 2 print_string_atom(node->pn_atom, f);
1133 siliconforks 92 Stream_write_string(f, ":\n");
1134 siliconforks 376 JSParseNode * labelled = node->pn_expr;
1135     if (labelled->pn_type == TOK_LEXICALSCOPE) {
1136     labelled = labelled->pn_expr;
1137     }
1138     if (labelled->pn_type == TOK_LC) {
1139     /* labelled block */
1140     Stream_printf(f, "%*s", indent, "");
1141     Stream_write_string(f, "{\n");
1142     instrument_statement(labelled, f, indent + 2, false);
1143     Stream_printf(f, "%*s", indent, "");
1144     Stream_write_string(f, "}\n");
1145     }
1146     else {
1147     /*
1148     This one is tricky: can't output instrumentation between the label and the
1149     statement it's supposed to label, so use output_statement instead of
1150     instrument_statement.
1151     */
1152     output_statement(labelled, f, indent, false);
1153     }
1154 siliconforks 2 break;
1155 siliconforks 376 }
1156 siliconforks 340 case TOK_LEXICALSCOPE:
1157     /* let statement */
1158     assert(node->pn_arity == PN_NAME);
1159     switch (node->pn_expr->pn_type) {
1160     case TOK_LET:
1161     /* let statement */
1162     assert(node->pn_expr->pn_arity == PN_BINARY);
1163     instrument_statement(node->pn_expr, f, indent, false);
1164     break;
1165     case TOK_LC:
1166     /* block */
1167     Stream_printf(f, "%*s", indent, "");
1168     Stream_write_string(f, "{\n");
1169     instrument_statement(node->pn_expr, f, indent + 2, false);
1170     Stream_printf(f, "%*s", indent, "");
1171     Stream_write_string(f, "}\n");
1172     break;
1173     case TOK_FOR:
1174     instrument_statement(node->pn_expr, f, indent, false);
1175     break;
1176     default:
1177     abort();
1178     break;
1179     }
1180     break;
1181     case TOK_LET:
1182     switch (node->pn_arity) {
1183     case PN_BINARY:
1184     /* let statement */
1185     Stream_printf(f, "%*s", indent, "");
1186     Stream_write_string(f, "let (");
1187     assert(node->pn_left->pn_type == TOK_LP);
1188     assert(node->pn_left->pn_arity == PN_LIST);
1189     instrument_declarations(node->pn_left, f);
1190     Stream_write_string(f, ") {\n");
1191     instrument_statement(node->pn_right, f, indent + 2, false);
1192     Stream_printf(f, "%*s", indent, "");
1193     Stream_write_string(f, "}\n");
1194     break;
1195     case PN_LIST:
1196     /* let definition */
1197 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1198     instrument_expression(node, f);
1199 siliconforks 340 Stream_write_string(f, ";\n");
1200     break;
1201     default:
1202     abort();
1203     break;
1204     }
1205     break;
1206 siliconforks 348 case TOK_DEBUGGER:
1207     Stream_printf(f, "%*s", indent, "");
1208     Stream_write_string(f, "debugger;\n");
1209     break;
1210 siliconforks 2 default:
1211 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
1212 siliconforks 2 }
1213     }
1214    
1215     /*
1216     See <Statements> in jsparse.h.
1217     TOK_FUNCTION is handled as a statement and as an expression.
1218     TOK_EXPORT, TOK_IMPORT are not handled.
1219     */
1220 siliconforks 240 static void instrument_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
1221 siliconforks 340 if (node->pn_type != TOK_LC && node->pn_type != TOK_LEXICALSCOPE) {
1222 siliconforks 214 uint16_t line = node->pn_pos.begin.lineno;
1223     if (line > num_lines) {
1224 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1225 siliconforks 214 }
1226    
1227 siliconforks 2 /* the root node has line number 0 */
1228     if (line != 0) {
1229 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1230     Stream_printf(f, "_$jscoverage['%s'][%d]++;\n", file_id, line);
1231 siliconforks 2 lines[line - 1] = 1;
1232     }
1233     }
1234 siliconforks 240 output_statement(node, f, indent, is_jscoverage_if);
1235 siliconforks 2 }
1236    
1237 siliconforks 190 static bool characters_start_with(const jschar * characters, size_t line_start, size_t line_end, const char * prefix) {
1238     const jschar * characters_end = characters + line_end;
1239     const jschar * cp = characters + line_start;
1240     const char * bp = prefix;
1241     for (;;) {
1242     if (*bp == '\0') {
1243     return true;
1244     }
1245     else if (cp == characters_end) {
1246     return false;
1247     }
1248     else if (*cp != *bp) {
1249     return false;
1250     }
1251     bp++;
1252     cp++;
1253     }
1254     }
1255    
1256 siliconforks 240 static bool characters_are_white_space(const jschar * characters, size_t line_start, size_t line_end) {
1257     /* XXX - other Unicode space */
1258     const jschar * end = characters + line_end;
1259     for (const jschar * p = characters + line_start; p < end; p++) {
1260     jschar c = *p;
1261     if (c == 0x9 || c == 0xB || c == 0xC || c == 0x20 || c == 0xA0) {
1262     continue;
1263     }
1264     else {
1265     return false;
1266     }
1267     }
1268     return true;
1269     }
1270    
1271 siliconforks 284 static void error_reporter(JSContext * context, const char * message, JSErrorReport * report) {
1272 siliconforks 372 warn_source(file_id, report->lineno, "%s", message);
1273 siliconforks 284 }
1274    
1275 siliconforks 179 void jscoverage_instrument_js(const char * id, const uint16_t * characters, size_t num_characters, Stream * output) {
1276 siliconforks 2 file_id = id;
1277    
1278 siliconforks 336 /* parse the javascript */
1279     JSParseContext parse_context;
1280     if (! js_InitParseContext(context, &parse_context, NULL, NULL, characters, num_characters, NULL, NULL, 1)) {
1281 siliconforks 370 fatal("cannot create token stream from file %s", file_id);
1282 siliconforks 2 }
1283 siliconforks 284 JSErrorReporter old_error_reporter = JS_SetErrorReporter(context, error_reporter);
1284 siliconforks 336 JSParseNode * node = js_ParseScript(context, global, &parse_context);
1285 siliconforks 2 if (node == NULL) {
1286 siliconforks 284 js_ReportUncaughtException(context);
1287 siliconforks 370 fatal("parse error in file %s", file_id);
1288 siliconforks 2 }
1289 siliconforks 284 JS_SetErrorReporter(context, old_error_reporter);
1290 siliconforks 214 num_lines = node->pn_pos.end.lineno;
1291 siliconforks 2 lines = xmalloc(num_lines);
1292 siliconforks 240 for (unsigned int i = 0; i < num_lines; i++) {
1293 siliconforks 2 lines[i] = 0;
1294     }
1295    
1296 siliconforks 240 /* search code for conditionals */
1297     exclusive_directives = xnew(bool, num_lines);
1298     for (unsigned int i = 0; i < num_lines; i++) {
1299     exclusive_directives[i] = false;
1300 siliconforks 2 }
1301    
1302 siliconforks 157 bool has_conditionals = false;
1303 siliconforks 240 struct IfDirective * if_directives = NULL;
1304 siliconforks 157 size_t line_number = 0;
1305     size_t i = 0;
1306 siliconforks 176 while (i < num_characters) {
1307 siliconforks 240 if (line_number == UINT16_MAX) {
1308 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1309 siliconforks 240 }
1310 siliconforks 157 line_number++;
1311     size_t line_start = i;
1312 siliconforks 190 jschar c;
1313     bool done = false;
1314     while (! done && i < num_characters) {
1315     c = characters[i];
1316     switch (c) {
1317     case '\r':
1318     case '\n':
1319     case 0x2028:
1320     case 0x2029:
1321     done = true;
1322     break;
1323     default:
1324     i++;
1325     }
1326 siliconforks 157 }
1327     size_t line_end = i;
1328 siliconforks 176 if (i < num_characters) {
1329 siliconforks 190 i++;
1330     if (c == '\r' && i < num_characters && characters[i] == '\n') {
1331 siliconforks 157 i++;
1332     }
1333     }
1334 siliconforks 240
1335 siliconforks 190 if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_IF")) {
1336 siliconforks 240 has_conditionals = true;
1337    
1338     if (characters_are_white_space(characters, line_start + 16, line_end)) {
1339     exclusive_directives[line_number - 1] = true;
1340 siliconforks 157 }
1341 siliconforks 240 else {
1342     struct IfDirective * if_directive = xnew(struct IfDirective, 1);
1343     if_directive->condition_start = characters + line_start + 16;
1344     if_directive->condition_end = characters + line_end;
1345     if_directive->start_line = line_number;
1346     if_directive->end_line = 0;
1347     if_directive->next = if_directives;
1348     if_directives = if_directive;
1349 siliconforks 190 }
1350 siliconforks 157 }
1351 siliconforks 190 else if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_ENDIF")) {
1352 siliconforks 240 for (struct IfDirective * p = if_directives; p != NULL; p = p->next) {
1353     if (p->end_line == 0) {
1354     p->end_line = line_number;
1355     break;
1356     }
1357     }
1358 siliconforks 157 }
1359     }
1360    
1361 siliconforks 240 /*
1362     An instrumented JavaScript file has 4 sections:
1363     1. initialization
1364     2. instrumented source code
1365     3. conditionals
1366     4. original source code
1367     */
1368    
1369     Stream * instrumented = Stream_new(0);
1370     instrument_statement(node, instrumented, 0, false);
1371 siliconforks 336 js_FinishParseContext(context, &parse_context);
1372 siliconforks 240
1373     /* write line number info to the output */
1374     Stream_write_string(output, "/* automatically generated by JSCoverage - do not edit */\n");
1375 siliconforks 361 if (jscoverage_mozilla) {
1376     Stream_write_string(output, "try {\n");
1377     Stream_write_string(output, " Components.utils.import('resource://gre/modules/jscoverage.jsm');\n");
1378     Stream_printf(output, " dump('%s: successfully imported jscoverage module\\n');\n", id);
1379     Stream_write_string(output, "}\n");
1380     Stream_write_string(output, "catch (e) {\n");
1381     Stream_write_string(output, " _$jscoverage = {};\n");
1382     Stream_printf(output, " dump('%s: failed to import jscoverage module - coverage not available for this file\\n');\n", id);
1383     Stream_write_string(output, "}\n");
1384     }
1385     else {
1386     Stream_write_string(output, "if (! top._$jscoverage) {\n top._$jscoverage = {};\n}\n");
1387     Stream_write_string(output, "var _$jscoverage = top._$jscoverage;\n");
1388     }
1389 siliconforks 240 Stream_printf(output, "if (! _$jscoverage['%s']) {\n", file_id);
1390     Stream_printf(output, " _$jscoverage['%s'] = [];\n", file_id);
1391     for (int i = 0; i < num_lines; i++) {
1392     if (lines[i]) {
1393     Stream_printf(output, " _$jscoverage['%s'][%d] = 0;\n", file_id, i + 1);
1394     }
1395     }
1396     Stream_write_string(output, "}\n");
1397     free(lines);
1398     lines = NULL;
1399     free(exclusive_directives);
1400     exclusive_directives = NULL;
1401    
1402     /* conditionals */
1403     if (has_conditionals) {
1404     Stream_printf(output, "_$jscoverage['%s'].conditionals = [];\n", file_id);
1405     }
1406    
1407     /* copy the instrumented source code to the output */
1408     Stream_write(output, instrumented->data, instrumented->length);
1409    
1410     /* conditionals */
1411     for (struct IfDirective * if_directive = if_directives; if_directive != NULL; if_directive = if_directive->next) {
1412     Stream_write_string(output, "if (!(");
1413 siliconforks 246 print_javascript(if_directive->condition_start, if_directive->condition_end - if_directive->condition_start, output);
1414 siliconforks 240 Stream_write_string(output, ")) {\n");
1415     Stream_printf(output, " _$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_directive->start_line, if_directive->end_line);
1416     Stream_write_string(output, "}\n");
1417     }
1418    
1419     /* free */
1420     while (if_directives != NULL) {
1421     struct IfDirective * if_directive = if_directives;
1422     if_directives = if_directives->next;
1423     free(if_directive);
1424     }
1425    
1426 siliconforks 95 /* copy the original source to the output */
1427 siliconforks 179 Stream_printf(output, "_$jscoverage['%s'].source = ", file_id);
1428     jscoverage_write_source(id, characters, num_characters, output);
1429     Stream_printf(output, ";\n");
1430 siliconforks 95
1431 siliconforks 179 Stream_delete(instrumented);
1432    
1433     file_id = NULL;
1434     }
1435    
1436     void jscoverage_write_source(const char * id, const jschar * characters, size_t num_characters, Stream * output) {
1437     Stream_write_string(output, "[");
1438     if (jscoverage_highlight) {
1439     Stream * highlighted_stream = Stream_new(num_characters);
1440     jscoverage_highlight_js(context, id, characters, num_characters, highlighted_stream);
1441     size_t i = 0;
1442     while (i < highlighted_stream->length) {
1443     if (i > 0) {
1444     Stream_write_char(output, ',');
1445     }
1446    
1447     Stream_write_char(output, '"');
1448     bool done = false;
1449     while (! done) {
1450     char c = highlighted_stream->data[i];
1451     switch (c) {
1452     case 0x8:
1453     /* backspace */
1454     Stream_write_string(output, "\\b");
1455     break;
1456     case 0x9:
1457     /* horizontal tab */
1458     Stream_write_string(output, "\\t");
1459     break;
1460     case 0xa:
1461     /* line feed (new line) */
1462     done = true;
1463     break;
1464 siliconforks 317 /* IE doesn't support this */
1465     /*
1466 siliconforks 179 case 0xb:
1467     Stream_write_string(output, "\\v");
1468     break;
1469 siliconforks 317 */
1470 siliconforks 179 case 0xc:
1471     /* form feed */
1472     Stream_write_string(output, "\\f");
1473     break;
1474     case 0xd:
1475     /* carriage return */
1476     done = true;
1477     if (i + 1 < highlighted_stream->length && highlighted_stream->data[i + 1] == '\n') {
1478     i++;
1479     }
1480     break;
1481     case '"':
1482     Stream_write_string(output, "\\\"");
1483     break;
1484     case '\\':
1485     Stream_write_string(output, "\\\\");
1486     break;
1487     default:
1488     Stream_write_char(output, c);
1489     break;
1490     }
1491 siliconforks 95 i++;
1492 siliconforks 179 if (i >= highlighted_stream->length) {
1493     done = true;
1494 siliconforks 95 }
1495     }
1496 siliconforks 179 Stream_write_char(output, '"');
1497     }
1498     Stream_delete(highlighted_stream);
1499     }
1500     else {
1501     size_t i = 0;
1502     while (i < num_characters) {
1503     if (i > 0) {
1504     Stream_write_char(output, ',');
1505     }
1506    
1507     Stream_write_char(output, '"');
1508     bool done = false;
1509     while (! done) {
1510     jschar c = characters[i];
1511     switch (c) {
1512     case 0x8:
1513     /* backspace */
1514     Stream_write_string(output, "\\b");
1515     break;
1516     case 0x9:
1517     /* horizontal tab */
1518     Stream_write_string(output, "\\t");
1519     break;
1520     case 0xa:
1521     /* line feed (new line) */
1522     done = true;
1523     break;
1524 siliconforks 317 /* IE doesn't support this */
1525     /*
1526 siliconforks 179 case 0xb:
1527     Stream_write_string(output, "\\v");
1528     break;
1529 siliconforks 317 */
1530 siliconforks 179 case 0xc:
1531     /* form feed */
1532     Stream_write_string(output, "\\f");
1533     break;
1534     case 0xd:
1535     /* carriage return */
1536     done = true;
1537     if (i + 1 < num_characters && characters[i + 1] == '\n') {
1538     i++;
1539     }
1540     break;
1541     case '"':
1542     Stream_write_string(output, "\\\"");
1543     break;
1544     case '\\':
1545     Stream_write_string(output, "\\\\");
1546     break;
1547     case '&':
1548     Stream_write_string(output, "&amp;");
1549     break;
1550     case '<':
1551     Stream_write_string(output, "&lt;");
1552     break;
1553     case '>':
1554     Stream_write_string(output, "&gt;");
1555     break;
1556     case 0x2028:
1557     case 0x2029:
1558     done = true;
1559     break;
1560     default:
1561     if (32 <= c && c <= 126) {
1562     Stream_write_char(output, c);
1563     }
1564     else {
1565     Stream_printf(output, "&#%d;", c);
1566     }
1567     break;
1568     }
1569 siliconforks 95 i++;
1570 siliconforks 179 if (i >= num_characters) {
1571     done = true;
1572     }
1573 siliconforks 95 }
1574 siliconforks 179 Stream_write_char(output, '"');
1575 siliconforks 95 }
1576     }
1577 siliconforks 179 Stream_write_string(output, "]");
1578 siliconforks 2 }
1579 siliconforks 116
1580     void jscoverage_copy_resources(const char * destination_directory) {
1581     copy_resource("jscoverage.html", destination_directory);
1582     copy_resource("jscoverage.css", destination_directory);
1583     copy_resource("jscoverage.js", destination_directory);
1584 siliconforks 169 copy_resource("jscoverage-ie.css", destination_directory);
1585 siliconforks 116 copy_resource("jscoverage-throbber.gif", destination_directory);
1586 siliconforks 179 copy_resource("jscoverage-highlight.css", destination_directory);
1587 siliconforks 116 }
1588    
1589     /*
1590     coverage reports
1591     */
1592    
1593     struct FileCoverageList {
1594     FileCoverage * file_coverage;
1595     struct FileCoverageList * next;
1596     };
1597    
1598     struct Coverage {
1599     JSHashTable * coverage_table;
1600     struct FileCoverageList * coverage_list;
1601     };
1602    
1603     static int compare_strings(const void * p1, const void * p2) {
1604     return strcmp(p1, p2) == 0;
1605     }
1606    
1607     Coverage * Coverage_new(void) {
1608     Coverage * result = xmalloc(sizeof(Coverage));
1609     result->coverage_table = JS_NewHashTable(1024, JS_HashString, compare_strings, NULL, NULL, NULL);
1610     if (result->coverage_table == NULL) {
1611     fatal("cannot create hash table");
1612     }
1613     result->coverage_list = NULL;
1614     return result;
1615     }
1616    
1617     void Coverage_delete(Coverage * coverage) {
1618     JS_HashTableDestroy(coverage->coverage_table);
1619     struct FileCoverageList * p = coverage->coverage_list;
1620     while (p != NULL) {
1621 siliconforks 179 free(p->file_coverage->coverage_lines);
1622     if (p->file_coverage->source_lines != NULL) {
1623     for (uint32 i = 0; i < p->file_coverage->num_source_lines; i++) {
1624     free(p->file_coverage->source_lines[i]);
1625     }
1626     free(p->file_coverage->source_lines);
1627     }
1628 siliconforks 116 free(p->file_coverage->id);
1629     free(p->file_coverage);
1630     struct FileCoverageList * q = p;
1631     p = p->next;
1632     free(q);
1633     }
1634     free(coverage);
1635     }
1636    
1637     struct EnumeratorArg {
1638     CoverageForeachFunction f;
1639     void * p;
1640     };
1641    
1642     static intN enumerator(JSHashEntry * entry, intN i, void * arg) {
1643     struct EnumeratorArg * enumerator_arg = arg;
1644     enumerator_arg->f(entry->value, i, enumerator_arg->p);
1645     return 0;
1646     }
1647    
1648     void Coverage_foreach_file(Coverage * coverage, CoverageForeachFunction f, void * p) {
1649     struct EnumeratorArg enumerator_arg;
1650     enumerator_arg.f = f;
1651     enumerator_arg.p = p;
1652     JS_HashTableEnumerateEntries(coverage->coverage_table, enumerator, &enumerator_arg);
1653     }
1654    
1655     int jscoverage_parse_json(Coverage * coverage, const uint8_t * json, size_t length) {
1656 siliconforks 336 int result = 0;
1657    
1658 siliconforks 116 jschar * base = js_InflateString(context, (char *) json, &length);
1659     if (base == NULL) {
1660     fatal("out of memory");
1661     }
1662    
1663     jschar * parenthesized_json = xnew(jschar, addst(length, 2));
1664     parenthesized_json[0] = '(';
1665     memcpy(parenthesized_json + 1, base, mulst(length, sizeof(jschar)));
1666     parenthesized_json[length + 1] = ')';
1667    
1668     JS_free(context, base);
1669    
1670 siliconforks 336 JSParseContext parse_context;
1671     if (! js_InitParseContext(context, &parse_context, NULL, NULL, parenthesized_json, length + 2, NULL, NULL, 1)) {
1672     free(parenthesized_json);
1673     return -1;
1674 siliconforks 116 }
1675 siliconforks 336 JSParseNode * root = js_ParseScript(context, global, &parse_context);
1676 siliconforks 116 free(parenthesized_json);
1677     if (root == NULL) {
1678 siliconforks 336 result = -1;
1679     goto done;
1680 siliconforks 116 }
1681    
1682     /* root node must be TOK_LC */
1683     if (root->pn_type != TOK_LC) {
1684 siliconforks 336 result = -1;
1685     goto done;
1686 siliconforks 116 }
1687     JSParseNode * semi = root->pn_u.list.head;
1688    
1689     /* the list must be TOK_SEMI and it must contain only one element */
1690     if (semi->pn_type != TOK_SEMI || semi->pn_next != NULL) {
1691 siliconforks 336 result = -1;
1692     goto done;
1693 siliconforks 116 }
1694     JSParseNode * parenthesized = semi->pn_kid;
1695    
1696     /* this must be a parenthesized expression */
1697     if (parenthesized->pn_type != TOK_RP) {
1698 siliconforks 336 result = -1;
1699     goto done;
1700 siliconforks 116 }
1701     JSParseNode * object = parenthesized->pn_kid;
1702    
1703     /* this must be an object literal */
1704     if (object->pn_type != TOK_RC) {
1705 siliconforks 336 result = -1;
1706     goto done;
1707 siliconforks 116 }
1708    
1709     for (JSParseNode * p = object->pn_head; p != NULL; p = p->pn_next) {
1710     /* every element of this list must be TOK_COLON */
1711     if (p->pn_type != TOK_COLON) {
1712 siliconforks 336 result = -1;
1713     goto done;
1714 siliconforks 116 }
1715    
1716     /* the key must be a string representing the file */
1717     JSParseNode * key = p->pn_left;
1718     if (key->pn_type != TOK_STRING || ! ATOM_IS_STRING(key->pn_atom)) {
1719 siliconforks 336 result = -1;
1720     goto done;
1721 siliconforks 116 }
1722     char * id_bytes = JS_GetStringBytes(ATOM_TO_STRING(key->pn_atom));
1723    
1724     /* the value must be an object literal OR an array */
1725     JSParseNode * value = p->pn_right;
1726     if (! (value->pn_type == TOK_RC || value->pn_type == TOK_RB)) {
1727 siliconforks 336 result = -1;
1728     goto done;
1729 siliconforks 116 }
1730    
1731     JSParseNode * array = NULL;
1732     JSParseNode * source = NULL;
1733     if (value->pn_type == TOK_RB) {
1734     /* an array */
1735     array = value;
1736     }
1737     else if (value->pn_type == TOK_RC) {
1738     /* an object literal */
1739     if (value->pn_count != 2) {
1740 siliconforks 336 result = -1;
1741     goto done;
1742 siliconforks 116 }
1743     for (JSParseNode * element = value->pn_head; element != NULL; element = element->pn_next) {
1744     if (element->pn_type != TOK_COLON) {
1745 siliconforks 336 result = -1;
1746     goto done;
1747 siliconforks 116 }
1748     JSParseNode * left = element->pn_left;
1749     if (left->pn_type != TOK_STRING || ! ATOM_IS_STRING(left->pn_atom)) {
1750 siliconforks 336 result = -1;
1751     goto done;
1752 siliconforks 116 }
1753     const char * s = JS_GetStringBytes(ATOM_TO_STRING(left->pn_atom));
1754     if (strcmp(s, "coverage") == 0) {
1755     array = element->pn_right;
1756     if (array->pn_type != TOK_RB) {
1757 siliconforks 336 result = -1;
1758     goto done;
1759 siliconforks 116 }
1760     }
1761     else if (strcmp(s, "source") == 0) {
1762     source = element->pn_right;
1763 siliconforks 179 if (source->pn_type != TOK_RB) {
1764 siliconforks 336 result = -1;
1765     goto done;
1766 siliconforks 116 }
1767     }
1768     else {
1769 siliconforks 336 result = -1;
1770     goto done;
1771 siliconforks 116 }
1772     }
1773     }
1774     else {
1775 siliconforks 336 result = -1;
1776     goto done;
1777 siliconforks 116 }
1778    
1779     if (array == NULL) {
1780 siliconforks 336 result = -1;
1781     goto done;
1782 siliconforks 116 }
1783    
1784     /* look up the file in the coverage table */
1785     FileCoverage * file_coverage = JS_HashTableLookup(coverage->coverage_table, id_bytes);
1786     if (file_coverage == NULL) {
1787     /* not there: create a new one */
1788     char * id = xstrdup(id_bytes);
1789     file_coverage = xmalloc(sizeof(FileCoverage));
1790     file_coverage->id = id;
1791 siliconforks 179 file_coverage->num_coverage_lines = array->pn_count;
1792     file_coverage->coverage_lines = xnew(int, array->pn_count);
1793 siliconforks 245 file_coverage->source_lines = NULL;
1794 siliconforks 116
1795     /* set coverage for all lines */
1796     uint32 i = 0;
1797     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1798     if (element->pn_type == TOK_NUMBER) {
1799 siliconforks 179 file_coverage->coverage_lines[i] = (int) element->pn_dval;
1800 siliconforks 116 }
1801     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1802 siliconforks 179 file_coverage->coverage_lines[i] = -1;
1803 siliconforks 116 }
1804     else {
1805 siliconforks 336 result = -1;
1806     goto done;
1807 siliconforks 116 }
1808     }
1809     assert(i == array->pn_count);
1810    
1811     /* add to the hash table */
1812     JS_HashTableAdd(coverage->coverage_table, id, file_coverage);
1813     struct FileCoverageList * coverage_list = xmalloc(sizeof(struct FileCoverageList));
1814     coverage_list->file_coverage = file_coverage;
1815     coverage_list->next = coverage->coverage_list;
1816     coverage->coverage_list = coverage_list;
1817     }
1818     else {
1819     /* sanity check */
1820     assert(strcmp(file_coverage->id, id_bytes) == 0);
1821 siliconforks 179 if (file_coverage->num_coverage_lines != array->pn_count) {
1822 siliconforks 336 result = -2;
1823     goto done;
1824 siliconforks 116 }
1825    
1826     /* merge the coverage */
1827     uint32 i = 0;
1828     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1829     if (element->pn_type == TOK_NUMBER) {
1830 siliconforks 179 if (file_coverage->coverage_lines[i] == -1) {
1831 siliconforks 336 result = -2;
1832     goto done;
1833 siliconforks 116 }
1834 siliconforks 179 file_coverage->coverage_lines[i] += (int) element->pn_dval;
1835 siliconforks 116 }
1836     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1837 siliconforks 179 if (file_coverage->coverage_lines[i] != -1) {
1838 siliconforks 336 result = -2;
1839     goto done;
1840 siliconforks 116 }
1841     }
1842     else {
1843 siliconforks 336 result = -1;
1844     goto done;
1845 siliconforks 116 }
1846     }
1847     assert(i == array->pn_count);
1848 siliconforks 245 }
1849 siliconforks 116
1850 siliconforks 245 /* if this JSON file has source, use it */
1851     if (file_coverage->source_lines == NULL && source != NULL) {
1852     file_coverage->num_source_lines = source->pn_count;
1853     file_coverage->source_lines = xnew(char *, source->pn_count);
1854     uint32 i = 0;
1855     for (JSParseNode * element = source->pn_head; element != NULL; element = element->pn_next, i++) {
1856     if (element->pn_type != TOK_STRING) {
1857 siliconforks 336 result = -1;
1858     goto done;
1859 siliconforks 179 }
1860 siliconforks 245 file_coverage->source_lines[i] = xstrdup(JS_GetStringBytes(ATOM_TO_STRING(element->pn_atom)));
1861 siliconforks 116 }
1862 siliconforks 245 assert(i == source->pn_count);
1863 siliconforks 116 }
1864     }
1865    
1866 siliconforks 336 done:
1867     js_FinishParseContext(context, &parse_context);
1868     return result;
1869 siliconforks 116 }

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