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

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Revision 389 - (hide annotations)
Thu Oct 30 17:53:07 2008 UTC (10 years, 11 months ago) by siliconforks
File MIME type: text/plain
File size: 54291 byte(s)
Add support for positive infinity, negative infinity, and NaN.
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 92 Stream_write_string(f, "0");
768 siliconforks 2 }
769 siliconforks 389 else if (node->pn_dval == INFINITY) {
770     Stream_write_string(f, "Number.POSITIVE_INFINITY");
771     }
772     else if (node->pn_dval == -INFINITY) {
773     Stream_write_string(f, "Number.NEGATIVE_INFINITY");
774     }
775     else if (node->pn_dval == NAN) {
776     Stream_write_string(f, "Number.NaN");
777     }
778 siliconforks 2 else {
779 siliconforks 92 Stream_printf(f, "%.15g", node->pn_dval);
780 siliconforks 2 }
781     break;
782     case TOK_PRIMARY:
783     switch (node->pn_op) {
784     case JSOP_TRUE:
785 siliconforks 92 Stream_write_string(f, "true");
786 siliconforks 2 break;
787     case JSOP_FALSE:
788 siliconforks 92 Stream_write_string(f, "false");
789 siliconforks 2 break;
790     case JSOP_NULL:
791 siliconforks 92 Stream_write_string(f, "null");
792 siliconforks 2 break;
793     case JSOP_THIS:
794 siliconforks 92 Stream_write_string(f, "this");
795 siliconforks 2 break;
796     /* jsscan.h mentions `super' ??? */
797     default:
798     abort();
799     }
800     break;
801     case TOK_INSTANCEOF:
802 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
803 siliconforks 92 Stream_write_string(f, " instanceof ");
804 siliconforks 379 output_expression(node->pn_right, f, false);
805 siliconforks 2 break;
806     case TOK_IN:
807 siliconforks 379 output_expression(node->pn_left, f, false);
808 siliconforks 92 Stream_write_string(f, " in ");
809 siliconforks 379 output_expression(node->pn_right, f, false);
810 siliconforks 2 break;
811 siliconforks 340 case TOK_LEXICALSCOPE:
812     assert(node->pn_arity == PN_NAME);
813     assert(node->pn_expr->pn_type == TOK_LET);
814     assert(node->pn_expr->pn_arity == PN_BINARY);
815     Stream_write_string(f, "let(");
816     assert(node->pn_expr->pn_left->pn_type == TOK_LP);
817     assert(node->pn_expr->pn_left->pn_arity == PN_LIST);
818     instrument_declarations(node->pn_expr->pn_left, f);
819     Stream_write_string(f, ") ");
820 siliconforks 379 output_expression(node->pn_expr->pn_right, f, true);
821 siliconforks 340 break;
822 siliconforks 342 case TOK_YIELD:
823     assert(node->pn_arity == PN_UNARY);
824 siliconforks 355 Stream_write_string(f, "yield");
825     if (node->pn_kid != NULL) {
826     Stream_write_char(f, ' ');
827 siliconforks 379 output_expression(node->pn_kid, f, true);
828 siliconforks 355 }
829 siliconforks 342 break;
830 siliconforks 343 case TOK_ARRAYCOMP:
831     assert(node->pn_arity == PN_LIST);
832     {
833     JSParseNode * block_node;
834     switch (node->pn_count) {
835     case 1:
836     block_node = node->pn_head;
837     break;
838     case 2:
839     block_node = node->pn_head->pn_next;
840     break;
841     default:
842     abort();
843     break;
844     }
845     Stream_write_char(f, '[');
846 siliconforks 357 output_array_comprehension_or_generator_expression(block_node, f);
847 siliconforks 343 Stream_write_char(f, ']');
848     }
849     break;
850     case TOK_VAR:
851     assert(node->pn_arity == PN_LIST);
852     Stream_write_string(f, "var ");
853     instrument_declarations(node, f);
854     break;
855     case TOK_LET:
856     assert(node->pn_arity == PN_LIST);
857     Stream_write_string(f, "let ");
858     instrument_declarations(node, f);
859     break;
860 siliconforks 2 default:
861 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
862 siliconforks 2 }
863     }
864    
865 siliconforks 240 static void output_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
866 siliconforks 2 switch (node->pn_type) {
867     case TOK_FUNCTION:
868 siliconforks 155 instrument_function(node, f, indent, FUNCTION_NORMAL);
869 siliconforks 380 Stream_write_char(f, '\n');
870 siliconforks 2 break;
871     case TOK_LC:
872     assert(node->pn_arity == PN_LIST);
873     /*
874 siliconforks 92 Stream_write_string(f, "{\n");
875 siliconforks 2 */
876     for (struct JSParseNode * p = node->pn_u.list.head; p != NULL; p = p->pn_next) {
877 siliconforks 240 instrument_statement(p, f, indent, false);
878 siliconforks 2 }
879     /*
880 siliconforks 92 Stream_printf(f, "%*s", indent, "");
881     Stream_write_string(f, "}\n");
882 siliconforks 2 */
883     break;
884     case TOK_IF:
885 siliconforks 240 {
886 siliconforks 2 assert(node->pn_arity == PN_TERNARY);
887 siliconforks 240
888     uint16_t line = node->pn_pos.begin.lineno;
889     if (! is_jscoverage_if) {
890     if (line > num_lines) {
891 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
892 siliconforks 240 }
893     if (line >= 2 && exclusive_directives[line - 2]) {
894     is_jscoverage_if = true;
895     }
896     }
897    
898 siliconforks 92 Stream_printf(f, "%*s", indent, "");
899     Stream_write_string(f, "if (");
900 siliconforks 379 output_expression(node->pn_kid1, f, false);
901 siliconforks 92 Stream_write_string(f, ") {\n");
902 siliconforks 240 if (is_jscoverage_if && node->pn_kid3) {
903     uint16_t else_start = node->pn_kid3->pn_pos.begin.lineno;
904     uint16_t else_end = node->pn_kid3->pn_pos.end.lineno + 1;
905     Stream_printf(f, "%*s", indent + 2, "");
906     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, else_start, else_end);
907     }
908     instrument_statement(node->pn_kid2, f, indent + 2, false);
909 siliconforks 92 Stream_printf(f, "%*s", indent, "");
910     Stream_write_string(f, "}\n");
911 siliconforks 240
912     if (node->pn_kid3 || is_jscoverage_if) {
913 siliconforks 92 Stream_printf(f, "%*s", indent, "");
914     Stream_write_string(f, "else {\n");
915 siliconforks 240
916     if (is_jscoverage_if) {
917     uint16_t if_start = node->pn_kid2->pn_pos.begin.lineno + 1;
918     uint16_t if_end = node->pn_kid2->pn_pos.end.lineno + 1;
919     Stream_printf(f, "%*s", indent + 2, "");
920     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_start, if_end);
921     }
922    
923     if (node->pn_kid3) {
924     instrument_statement(node->pn_kid3, f, indent + 2, is_jscoverage_if);
925     }
926    
927 siliconforks 92 Stream_printf(f, "%*s", indent, "");
928     Stream_write_string(f, "}\n");
929 siliconforks 2 }
930 siliconforks 240
931 siliconforks 2 break;
932 siliconforks 240 }
933 siliconforks 2 case TOK_SWITCH:
934     assert(node->pn_arity == PN_BINARY);
935 siliconforks 92 Stream_printf(f, "%*s", indent, "");
936     Stream_write_string(f, "switch (");
937 siliconforks 379 output_expression(node->pn_left, f, false);
938 siliconforks 92 Stream_write_string(f, ") {\n");
939 siliconforks 350 {
940     JSParseNode * list = node->pn_right;
941     if (list->pn_type == TOK_LEXICALSCOPE) {
942     list = list->pn_expr;
943 siliconforks 2 }
944 siliconforks 350 for (struct JSParseNode * p = list->pn_head; p != NULL; p = p->pn_next) {
945     Stream_printf(f, "%*s", indent, "");
946     switch (p->pn_type) {
947     case TOK_CASE:
948     Stream_write_string(f, "case ");
949 siliconforks 379 output_expression(p->pn_left, f, false);
950 siliconforks 350 Stream_write_string(f, ":\n");
951     break;
952     case TOK_DEFAULT:
953     Stream_write_string(f, "default:\n");
954     break;
955     default:
956     abort();
957     break;
958     }
959     instrument_statement(p->pn_right, f, indent + 2, false);
960     }
961 siliconforks 2 }
962 siliconforks 92 Stream_printf(f, "%*s", indent, "");
963     Stream_write_string(f, "}\n");
964 siliconforks 2 break;
965     case TOK_CASE:
966     case TOK_DEFAULT:
967     abort();
968     break;
969     case TOK_WHILE:
970     assert(node->pn_arity == PN_BINARY);
971 siliconforks 92 Stream_printf(f, "%*s", indent, "");
972     Stream_write_string(f, "while (");
973 siliconforks 379 output_expression(node->pn_left, f, false);
974 siliconforks 92 Stream_write_string(f, ") {\n");
975 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
976 siliconforks 92 Stream_write_string(f, "}\n");
977 siliconforks 2 break;
978     case TOK_DO:
979     assert(node->pn_arity == PN_BINARY);
980 siliconforks 92 Stream_printf(f, "%*s", indent, "");
981     Stream_write_string(f, "do {\n");
982 siliconforks 240 instrument_statement(node->pn_left, f, indent + 2, false);
983 siliconforks 92 Stream_write_string(f, "}\n");
984     Stream_printf(f, "%*s", indent, "");
985     Stream_write_string(f, "while (");
986 siliconforks 379 output_expression(node->pn_right, f, false);
987 siliconforks 92 Stream_write_string(f, ");\n");
988 siliconforks 2 break;
989     case TOK_FOR:
990     assert(node->pn_arity == PN_BINARY);
991 siliconforks 92 Stream_printf(f, "%*s", indent, "");
992 siliconforks 2 switch (node->pn_left->pn_type) {
993     case TOK_IN:
994     /* for/in */
995     assert(node->pn_left->pn_arity == PN_BINARY);
996 siliconforks 343 output_for_in(node, f);
997 siliconforks 2 break;
998     case TOK_RESERVED:
999     /* for (;;) */
1000     assert(node->pn_left->pn_arity == PN_TERNARY);
1001 siliconforks 343 Stream_write_string(f, "for (");
1002 siliconforks 2 if (node->pn_left->pn_kid1) {
1003 siliconforks 379 output_expression(node->pn_left->pn_kid1, f, false);
1004 siliconforks 2 }
1005 siliconforks 92 Stream_write_string(f, ";");
1006 siliconforks 2 if (node->pn_left->pn_kid2) {
1007 siliconforks 92 Stream_write_char(f, ' ');
1008 siliconforks 379 output_expression(node->pn_left->pn_kid2, f, false);
1009 siliconforks 2 }
1010 siliconforks 92 Stream_write_string(f, ";");
1011 siliconforks 2 if (node->pn_left->pn_kid3) {
1012 siliconforks 92 Stream_write_char(f, ' ');
1013 siliconforks 379 output_expression(node->pn_left->pn_kid3, f, false);
1014 siliconforks 2 }
1015 siliconforks 343 Stream_write_char(f, ')');
1016 siliconforks 2 break;
1017     default:
1018     abort();
1019     break;
1020     }
1021 siliconforks 343 Stream_write_string(f, " {\n");
1022 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1023 siliconforks 92 Stream_write_string(f, "}\n");
1024 siliconforks 2 break;
1025     case TOK_THROW:
1026     assert(node->pn_arity == PN_UNARY);
1027 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1028     Stream_write_string(f, "throw ");
1029 siliconforks 379 output_expression(node->pn_u.unary.kid, f, false);
1030 siliconforks 92 Stream_write_string(f, ";\n");
1031 siliconforks 2 break;
1032     case TOK_TRY:
1033 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1034     Stream_write_string(f, "try {\n");
1035 siliconforks 240 instrument_statement(node->pn_kid1, f, indent + 2, false);
1036 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1037     Stream_write_string(f, "}\n");
1038 siliconforks 336 if (node->pn_kid2) {
1039     assert(node->pn_kid2->pn_type == TOK_RESERVED);
1040     for (JSParseNode * scope = node->pn_kid2->pn_head; scope != NULL; scope = scope->pn_next) {
1041     assert(scope->pn_type == TOK_LEXICALSCOPE);
1042     JSParseNode * catch = scope->pn_expr;
1043 siliconforks 2 assert(catch->pn_type == TOK_CATCH);
1044 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1045     Stream_write_string(f, "catch (");
1046 siliconforks 379 output_expression(catch->pn_kid1, f, false);
1047 siliconforks 336 if (catch->pn_kid2) {
1048 siliconforks 92 Stream_write_string(f, " if ");
1049 siliconforks 379 output_expression(catch->pn_kid2, f, false);
1050 siliconforks 2 }
1051 siliconforks 92 Stream_write_string(f, ") {\n");
1052 siliconforks 240 instrument_statement(catch->pn_kid3, f, indent + 2, false);
1053 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1054     Stream_write_string(f, "}\n");
1055 siliconforks 2 }
1056     }
1057     if (node->pn_kid3) {
1058 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1059     Stream_write_string(f, "finally {\n");
1060 siliconforks 240 instrument_statement(node->pn_kid3, f, indent + 2, false);
1061 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1062     Stream_write_string(f, "}\n");
1063 siliconforks 2 }
1064     break;
1065     case TOK_CATCH:
1066     abort();
1067     break;
1068     case TOK_BREAK:
1069     case TOK_CONTINUE:
1070     assert(node->pn_arity == PN_NAME || node->pn_arity == PN_NULLARY);
1071 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1072     Stream_write_string(f, node->pn_type == TOK_BREAK? "break": "continue");
1073 siliconforks 2 JSAtom * atom = node->pn_u.name.atom;
1074     if (atom != NULL) {
1075 siliconforks 92 Stream_write_char(f, ' ');
1076 siliconforks 2 print_string_atom(node->pn_atom, f);
1077     }
1078 siliconforks 92 Stream_write_string(f, ";\n");
1079 siliconforks 2 break;
1080     case TOK_WITH:
1081     assert(node->pn_arity == PN_BINARY);
1082 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1083     Stream_write_string(f, "with (");
1084 siliconforks 379 output_expression(node->pn_left, f, false);
1085 siliconforks 92 Stream_write_string(f, ") {\n");
1086 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1087 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1088     Stream_write_string(f, "}\n");
1089 siliconforks 2 break;
1090     case TOK_VAR:
1091 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1092 siliconforks 379 output_expression(node, f, false);
1093 siliconforks 92 Stream_write_string(f, ";\n");
1094 siliconforks 2 break;
1095     case TOK_RETURN:
1096     assert(node->pn_arity == PN_UNARY);
1097 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1098     Stream_write_string(f, "return");
1099 siliconforks 2 if (node->pn_kid != NULL) {
1100 siliconforks 92 Stream_write_char(f, ' ');
1101 siliconforks 379 output_expression(node->pn_kid, f, true);
1102 siliconforks 2 }
1103 siliconforks 92 Stream_write_string(f, ";\n");
1104 siliconforks 2 break;
1105     case TOK_SEMI:
1106     assert(node->pn_arity == PN_UNARY);
1107 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1108 siliconforks 2 if (node->pn_kid != NULL) {
1109 siliconforks 379 output_expression(node->pn_kid, f, true);
1110 siliconforks 2 }
1111 siliconforks 92 Stream_write_string(f, ";\n");
1112 siliconforks 2 break;
1113     case TOK_COLON:
1114 siliconforks 376 {
1115 siliconforks 2 assert(node->pn_arity == PN_NAME);
1116 siliconforks 92 Stream_printf(f, "%*s", indent < 2? 0: indent - 2, "");
1117 siliconforks 2 print_string_atom(node->pn_atom, f);
1118 siliconforks 92 Stream_write_string(f, ":\n");
1119 siliconforks 376 JSParseNode * labelled = node->pn_expr;
1120     if (labelled->pn_type == TOK_LEXICALSCOPE) {
1121     labelled = labelled->pn_expr;
1122     }
1123     if (labelled->pn_type == TOK_LC) {
1124     /* labelled block */
1125     Stream_printf(f, "%*s", indent, "");
1126     Stream_write_string(f, "{\n");
1127     instrument_statement(labelled, f, indent + 2, false);
1128     Stream_printf(f, "%*s", indent, "");
1129     Stream_write_string(f, "}\n");
1130     }
1131     else {
1132     /*
1133     This one is tricky: can't output instrumentation between the label and the
1134     statement it's supposed to label, so use output_statement instead of
1135     instrument_statement.
1136     */
1137     output_statement(labelled, f, indent, false);
1138     }
1139 siliconforks 2 break;
1140 siliconforks 376 }
1141 siliconforks 340 case TOK_LEXICALSCOPE:
1142     /* let statement */
1143     assert(node->pn_arity == PN_NAME);
1144     switch (node->pn_expr->pn_type) {
1145     case TOK_LET:
1146     /* let statement */
1147     assert(node->pn_expr->pn_arity == PN_BINARY);
1148     instrument_statement(node->pn_expr, f, indent, false);
1149     break;
1150     case TOK_LC:
1151     /* block */
1152     Stream_printf(f, "%*s", indent, "");
1153     Stream_write_string(f, "{\n");
1154     instrument_statement(node->pn_expr, f, indent + 2, false);
1155     Stream_printf(f, "%*s", indent, "");
1156     Stream_write_string(f, "}\n");
1157     break;
1158     case TOK_FOR:
1159     instrument_statement(node->pn_expr, f, indent, false);
1160     break;
1161     default:
1162     abort();
1163     break;
1164     }
1165     break;
1166     case TOK_LET:
1167     switch (node->pn_arity) {
1168     case PN_BINARY:
1169     /* let statement */
1170     Stream_printf(f, "%*s", indent, "");
1171     Stream_write_string(f, "let (");
1172     assert(node->pn_left->pn_type == TOK_LP);
1173     assert(node->pn_left->pn_arity == PN_LIST);
1174     instrument_declarations(node->pn_left, f);
1175     Stream_write_string(f, ") {\n");
1176     instrument_statement(node->pn_right, f, indent + 2, false);
1177     Stream_printf(f, "%*s", indent, "");
1178     Stream_write_string(f, "}\n");
1179     break;
1180     case PN_LIST:
1181     /* let definition */
1182 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1183 siliconforks 379 output_expression(node, f, false);
1184 siliconforks 340 Stream_write_string(f, ";\n");
1185     break;
1186     default:
1187     abort();
1188     break;
1189     }
1190     break;
1191 siliconforks 348 case TOK_DEBUGGER:
1192     Stream_printf(f, "%*s", indent, "");
1193     Stream_write_string(f, "debugger;\n");
1194     break;
1195 siliconforks 2 default:
1196 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
1197 siliconforks 2 }
1198     }
1199    
1200     /*
1201     See <Statements> in jsparse.h.
1202     TOK_FUNCTION is handled as a statement and as an expression.
1203     TOK_EXPORT, TOK_IMPORT are not handled.
1204     */
1205 siliconforks 240 static void instrument_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
1206 siliconforks 340 if (node->pn_type != TOK_LC && node->pn_type != TOK_LEXICALSCOPE) {
1207 siliconforks 214 uint16_t line = node->pn_pos.begin.lineno;
1208     if (line > num_lines) {
1209 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1210 siliconforks 214 }
1211    
1212 siliconforks 2 /* the root node has line number 0 */
1213     if (line != 0) {
1214 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1215     Stream_printf(f, "_$jscoverage['%s'][%d]++;\n", file_id, line);
1216 siliconforks 2 lines[line - 1] = 1;
1217     }
1218     }
1219 siliconforks 240 output_statement(node, f, indent, is_jscoverage_if);
1220 siliconforks 2 }
1221    
1222 siliconforks 190 static bool characters_start_with(const jschar * characters, size_t line_start, size_t line_end, const char * prefix) {
1223     const jschar * characters_end = characters + line_end;
1224     const jschar * cp = characters + line_start;
1225     const char * bp = prefix;
1226     for (;;) {
1227     if (*bp == '\0') {
1228     return true;
1229     }
1230     else if (cp == characters_end) {
1231     return false;
1232     }
1233     else if (*cp != *bp) {
1234     return false;
1235     }
1236     bp++;
1237     cp++;
1238     }
1239     }
1240    
1241 siliconforks 240 static bool characters_are_white_space(const jschar * characters, size_t line_start, size_t line_end) {
1242     /* XXX - other Unicode space */
1243     const jschar * end = characters + line_end;
1244     for (const jschar * p = characters + line_start; p < end; p++) {
1245     jschar c = *p;
1246     if (c == 0x9 || c == 0xB || c == 0xC || c == 0x20 || c == 0xA0) {
1247     continue;
1248     }
1249     else {
1250     return false;
1251     }
1252     }
1253     return true;
1254     }
1255    
1256 siliconforks 284 static void error_reporter(JSContext * context, const char * message, JSErrorReport * report) {
1257 siliconforks 372 warn_source(file_id, report->lineno, "%s", message);
1258 siliconforks 284 }
1259    
1260 siliconforks 179 void jscoverage_instrument_js(const char * id, const uint16_t * characters, size_t num_characters, Stream * output) {
1261 siliconforks 2 file_id = id;
1262    
1263 siliconforks 336 /* parse the javascript */
1264     JSParseContext parse_context;
1265     if (! js_InitParseContext(context, &parse_context, NULL, NULL, characters, num_characters, NULL, NULL, 1)) {
1266 siliconforks 370 fatal("cannot create token stream from file %s", file_id);
1267 siliconforks 2 }
1268 siliconforks 284 JSErrorReporter old_error_reporter = JS_SetErrorReporter(context, error_reporter);
1269 siliconforks 336 JSParseNode * node = js_ParseScript(context, global, &parse_context);
1270 siliconforks 2 if (node == NULL) {
1271 siliconforks 284 js_ReportUncaughtException(context);
1272 siliconforks 370 fatal("parse error in file %s", file_id);
1273 siliconforks 2 }
1274 siliconforks 284 JS_SetErrorReporter(context, old_error_reporter);
1275 siliconforks 214 num_lines = node->pn_pos.end.lineno;
1276 siliconforks 2 lines = xmalloc(num_lines);
1277 siliconforks 240 for (unsigned int i = 0; i < num_lines; i++) {
1278 siliconforks 2 lines[i] = 0;
1279     }
1280    
1281 siliconforks 240 /* search code for conditionals */
1282     exclusive_directives = xnew(bool, num_lines);
1283     for (unsigned int i = 0; i < num_lines; i++) {
1284     exclusive_directives[i] = false;
1285 siliconforks 2 }
1286    
1287 siliconforks 157 bool has_conditionals = false;
1288 siliconforks 240 struct IfDirective * if_directives = NULL;
1289 siliconforks 157 size_t line_number = 0;
1290     size_t i = 0;
1291 siliconforks 176 while (i < num_characters) {
1292 siliconforks 240 if (line_number == UINT16_MAX) {
1293 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1294 siliconforks 240 }
1295 siliconforks 157 line_number++;
1296     size_t line_start = i;
1297 siliconforks 190 jschar c;
1298     bool done = false;
1299     while (! done && i < num_characters) {
1300     c = characters[i];
1301     switch (c) {
1302     case '\r':
1303     case '\n':
1304     case 0x2028:
1305     case 0x2029:
1306     done = true;
1307     break;
1308     default:
1309     i++;
1310     }
1311 siliconforks 157 }
1312     size_t line_end = i;
1313 siliconforks 176 if (i < num_characters) {
1314 siliconforks 190 i++;
1315     if (c == '\r' && i < num_characters && characters[i] == '\n') {
1316 siliconforks 157 i++;
1317     }
1318     }
1319 siliconforks 240
1320 siliconforks 190 if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_IF")) {
1321 siliconforks 240 has_conditionals = true;
1322    
1323     if (characters_are_white_space(characters, line_start + 16, line_end)) {
1324     exclusive_directives[line_number - 1] = true;
1325 siliconforks 157 }
1326 siliconforks 240 else {
1327     struct IfDirective * if_directive = xnew(struct IfDirective, 1);
1328     if_directive->condition_start = characters + line_start + 16;
1329     if_directive->condition_end = characters + line_end;
1330     if_directive->start_line = line_number;
1331     if_directive->end_line = 0;
1332     if_directive->next = if_directives;
1333     if_directives = if_directive;
1334 siliconforks 190 }
1335 siliconforks 157 }
1336 siliconforks 190 else if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_ENDIF")) {
1337 siliconforks 240 for (struct IfDirective * p = if_directives; p != NULL; p = p->next) {
1338     if (p->end_line == 0) {
1339     p->end_line = line_number;
1340     break;
1341     }
1342     }
1343 siliconforks 157 }
1344     }
1345    
1346 siliconforks 240 /*
1347     An instrumented JavaScript file has 4 sections:
1348     1. initialization
1349     2. instrumented source code
1350     3. conditionals
1351     4. original source code
1352     */
1353    
1354     Stream * instrumented = Stream_new(0);
1355     instrument_statement(node, instrumented, 0, false);
1356 siliconforks 336 js_FinishParseContext(context, &parse_context);
1357 siliconforks 240
1358     /* write line number info to the output */
1359     Stream_write_string(output, "/* automatically generated by JSCoverage - do not edit */\n");
1360 siliconforks 361 if (jscoverage_mozilla) {
1361     Stream_write_string(output, "try {\n");
1362     Stream_write_string(output, " Components.utils.import('resource://gre/modules/jscoverage.jsm');\n");
1363     Stream_printf(output, " dump('%s: successfully imported jscoverage module\\n');\n", id);
1364     Stream_write_string(output, "}\n");
1365     Stream_write_string(output, "catch (e) {\n");
1366     Stream_write_string(output, " _$jscoverage = {};\n");
1367     Stream_printf(output, " dump('%s: failed to import jscoverage module - coverage not available for this file\\n');\n", id);
1368     Stream_write_string(output, "}\n");
1369     }
1370     else {
1371     Stream_write_string(output, "if (! top._$jscoverage) {\n top._$jscoverage = {};\n}\n");
1372     Stream_write_string(output, "var _$jscoverage = top._$jscoverage;\n");
1373     }
1374 siliconforks 240 Stream_printf(output, "if (! _$jscoverage['%s']) {\n", file_id);
1375     Stream_printf(output, " _$jscoverage['%s'] = [];\n", file_id);
1376     for (int i = 0; i < num_lines; i++) {
1377     if (lines[i]) {
1378     Stream_printf(output, " _$jscoverage['%s'][%d] = 0;\n", file_id, i + 1);
1379     }
1380     }
1381     Stream_write_string(output, "}\n");
1382     free(lines);
1383     lines = NULL;
1384     free(exclusive_directives);
1385     exclusive_directives = NULL;
1386    
1387     /* conditionals */
1388     if (has_conditionals) {
1389     Stream_printf(output, "_$jscoverage['%s'].conditionals = [];\n", file_id);
1390     }
1391    
1392     /* copy the instrumented source code to the output */
1393     Stream_write(output, instrumented->data, instrumented->length);
1394    
1395     /* conditionals */
1396     for (struct IfDirective * if_directive = if_directives; if_directive != NULL; if_directive = if_directive->next) {
1397     Stream_write_string(output, "if (!(");
1398 siliconforks 246 print_javascript(if_directive->condition_start, if_directive->condition_end - if_directive->condition_start, output);
1399 siliconforks 240 Stream_write_string(output, ")) {\n");
1400     Stream_printf(output, " _$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_directive->start_line, if_directive->end_line);
1401     Stream_write_string(output, "}\n");
1402     }
1403    
1404     /* free */
1405     while (if_directives != NULL) {
1406     struct IfDirective * if_directive = if_directives;
1407     if_directives = if_directives->next;
1408     free(if_directive);
1409     }
1410    
1411 siliconforks 95 /* copy the original source to the output */
1412 siliconforks 179 Stream_printf(output, "_$jscoverage['%s'].source = ", file_id);
1413     jscoverage_write_source(id, characters, num_characters, output);
1414     Stream_printf(output, ";\n");
1415 siliconforks 95
1416 siliconforks 179 Stream_delete(instrumented);
1417    
1418     file_id = NULL;
1419     }
1420    
1421     void jscoverage_write_source(const char * id, const jschar * characters, size_t num_characters, Stream * output) {
1422     Stream_write_string(output, "[");
1423     if (jscoverage_highlight) {
1424     Stream * highlighted_stream = Stream_new(num_characters);
1425     jscoverage_highlight_js(context, id, characters, num_characters, highlighted_stream);
1426     size_t i = 0;
1427     while (i < highlighted_stream->length) {
1428     if (i > 0) {
1429     Stream_write_char(output, ',');
1430     }
1431    
1432     Stream_write_char(output, '"');
1433     bool done = false;
1434     while (! done) {
1435     char c = highlighted_stream->data[i];
1436     switch (c) {
1437     case 0x8:
1438     /* backspace */
1439     Stream_write_string(output, "\\b");
1440     break;
1441     case 0x9:
1442     /* horizontal tab */
1443     Stream_write_string(output, "\\t");
1444     break;
1445     case 0xa:
1446     /* line feed (new line) */
1447     done = true;
1448     break;
1449 siliconforks 317 /* IE doesn't support this */
1450     /*
1451 siliconforks 179 case 0xb:
1452     Stream_write_string(output, "\\v");
1453     break;
1454 siliconforks 317 */
1455 siliconforks 179 case 0xc:
1456     /* form feed */
1457     Stream_write_string(output, "\\f");
1458     break;
1459     case 0xd:
1460     /* carriage return */
1461     done = true;
1462     if (i + 1 < highlighted_stream->length && highlighted_stream->data[i + 1] == '\n') {
1463     i++;
1464     }
1465     break;
1466     case '"':
1467     Stream_write_string(output, "\\\"");
1468     break;
1469     case '\\':
1470     Stream_write_string(output, "\\\\");
1471     break;
1472     default:
1473     Stream_write_char(output, c);
1474     break;
1475     }
1476 siliconforks 95 i++;
1477 siliconforks 179 if (i >= highlighted_stream->length) {
1478     done = true;
1479 siliconforks 95 }
1480     }
1481 siliconforks 179 Stream_write_char(output, '"');
1482     }
1483     Stream_delete(highlighted_stream);
1484     }
1485     else {
1486     size_t i = 0;
1487     while (i < num_characters) {
1488     if (i > 0) {
1489     Stream_write_char(output, ',');
1490     }
1491    
1492     Stream_write_char(output, '"');
1493     bool done = false;
1494     while (! done) {
1495     jschar c = characters[i];
1496     switch (c) {
1497     case 0x8:
1498     /* backspace */
1499     Stream_write_string(output, "\\b");
1500     break;
1501     case 0x9:
1502     /* horizontal tab */
1503     Stream_write_string(output, "\\t");
1504     break;
1505     case 0xa:
1506     /* line feed (new line) */
1507     done = true;
1508     break;
1509 siliconforks 317 /* IE doesn't support this */
1510     /*
1511 siliconforks 179 case 0xb:
1512     Stream_write_string(output, "\\v");
1513     break;
1514 siliconforks 317 */
1515 siliconforks 179 case 0xc:
1516     /* form feed */
1517     Stream_write_string(output, "\\f");
1518     break;
1519     case 0xd:
1520     /* carriage return */
1521     done = true;
1522     if (i + 1 < num_characters && characters[i + 1] == '\n') {
1523     i++;
1524     }
1525     break;
1526     case '"':
1527     Stream_write_string(output, "\\\"");
1528     break;
1529     case '\\':
1530     Stream_write_string(output, "\\\\");
1531     break;
1532     case '&':
1533     Stream_write_string(output, "&amp;");
1534     break;
1535     case '<':
1536     Stream_write_string(output, "&lt;");
1537     break;
1538     case '>':
1539     Stream_write_string(output, "&gt;");
1540     break;
1541     case 0x2028:
1542     case 0x2029:
1543     done = true;
1544     break;
1545     default:
1546     if (32 <= c && c <= 126) {
1547     Stream_write_char(output, c);
1548     }
1549     else {
1550     Stream_printf(output, "&#%d;", c);
1551     }
1552     break;
1553     }
1554 siliconforks 95 i++;
1555 siliconforks 179 if (i >= num_characters) {
1556     done = true;
1557     }
1558 siliconforks 95 }
1559 siliconforks 179 Stream_write_char(output, '"');
1560 siliconforks 95 }
1561     }
1562 siliconforks 179 Stream_write_string(output, "]");
1563 siliconforks 2 }
1564 siliconforks 116
1565     void jscoverage_copy_resources(const char * destination_directory) {
1566     copy_resource("jscoverage.html", destination_directory);
1567     copy_resource("jscoverage.css", destination_directory);
1568     copy_resource("jscoverage.js", destination_directory);
1569 siliconforks 169 copy_resource("jscoverage-ie.css", destination_directory);
1570 siliconforks 116 copy_resource("jscoverage-throbber.gif", destination_directory);
1571 siliconforks 179 copy_resource("jscoverage-highlight.css", destination_directory);
1572 siliconforks 116 }
1573    
1574     /*
1575     coverage reports
1576     */
1577    
1578     struct FileCoverageList {
1579     FileCoverage * file_coverage;
1580     struct FileCoverageList * next;
1581     };
1582    
1583     struct Coverage {
1584     JSHashTable * coverage_table;
1585     struct FileCoverageList * coverage_list;
1586     };
1587    
1588     static int compare_strings(const void * p1, const void * p2) {
1589     return strcmp(p1, p2) == 0;
1590     }
1591    
1592     Coverage * Coverage_new(void) {
1593     Coverage * result = xmalloc(sizeof(Coverage));
1594     result->coverage_table = JS_NewHashTable(1024, JS_HashString, compare_strings, NULL, NULL, NULL);
1595     if (result->coverage_table == NULL) {
1596     fatal("cannot create hash table");
1597     }
1598     result->coverage_list = NULL;
1599     return result;
1600     }
1601    
1602     void Coverage_delete(Coverage * coverage) {
1603     JS_HashTableDestroy(coverage->coverage_table);
1604     struct FileCoverageList * p = coverage->coverage_list;
1605     while (p != NULL) {
1606 siliconforks 179 free(p->file_coverage->coverage_lines);
1607     if (p->file_coverage->source_lines != NULL) {
1608     for (uint32 i = 0; i < p->file_coverage->num_source_lines; i++) {
1609     free(p->file_coverage->source_lines[i]);
1610     }
1611     free(p->file_coverage->source_lines);
1612     }
1613 siliconforks 116 free(p->file_coverage->id);
1614     free(p->file_coverage);
1615     struct FileCoverageList * q = p;
1616     p = p->next;
1617     free(q);
1618     }
1619     free(coverage);
1620     }
1621    
1622     struct EnumeratorArg {
1623     CoverageForeachFunction f;
1624     void * p;
1625     };
1626    
1627     static intN enumerator(JSHashEntry * entry, intN i, void * arg) {
1628     struct EnumeratorArg * enumerator_arg = arg;
1629     enumerator_arg->f(entry->value, i, enumerator_arg->p);
1630     return 0;
1631     }
1632    
1633     void Coverage_foreach_file(Coverage * coverage, CoverageForeachFunction f, void * p) {
1634     struct EnumeratorArg enumerator_arg;
1635     enumerator_arg.f = f;
1636     enumerator_arg.p = p;
1637     JS_HashTableEnumerateEntries(coverage->coverage_table, enumerator, &enumerator_arg);
1638     }
1639    
1640     int jscoverage_parse_json(Coverage * coverage, const uint8_t * json, size_t length) {
1641 siliconforks 336 int result = 0;
1642    
1643 siliconforks 116 jschar * base = js_InflateString(context, (char *) json, &length);
1644     if (base == NULL) {
1645     fatal("out of memory");
1646     }
1647    
1648     jschar * parenthesized_json = xnew(jschar, addst(length, 2));
1649     parenthesized_json[0] = '(';
1650     memcpy(parenthesized_json + 1, base, mulst(length, sizeof(jschar)));
1651     parenthesized_json[length + 1] = ')';
1652    
1653     JS_free(context, base);
1654    
1655 siliconforks 336 JSParseContext parse_context;
1656     if (! js_InitParseContext(context, &parse_context, NULL, NULL, parenthesized_json, length + 2, NULL, NULL, 1)) {
1657     free(parenthesized_json);
1658     return -1;
1659 siliconforks 116 }
1660 siliconforks 336 JSParseNode * root = js_ParseScript(context, global, &parse_context);
1661 siliconforks 116 free(parenthesized_json);
1662     if (root == NULL) {
1663 siliconforks 336 result = -1;
1664     goto done;
1665 siliconforks 116 }
1666    
1667     /* root node must be TOK_LC */
1668     if (root->pn_type != TOK_LC) {
1669 siliconforks 336 result = -1;
1670     goto done;
1671 siliconforks 116 }
1672     JSParseNode * semi = root->pn_u.list.head;
1673    
1674     /* the list must be TOK_SEMI and it must contain only one element */
1675     if (semi->pn_type != TOK_SEMI || semi->pn_next != NULL) {
1676 siliconforks 336 result = -1;
1677     goto done;
1678 siliconforks 116 }
1679     JSParseNode * parenthesized = semi->pn_kid;
1680    
1681     /* this must be a parenthesized expression */
1682     if (parenthesized->pn_type != TOK_RP) {
1683 siliconforks 336 result = -1;
1684     goto done;
1685 siliconforks 116 }
1686     JSParseNode * object = parenthesized->pn_kid;
1687    
1688     /* this must be an object literal */
1689     if (object->pn_type != TOK_RC) {
1690 siliconforks 336 result = -1;
1691     goto done;
1692 siliconforks 116 }
1693    
1694     for (JSParseNode * p = object->pn_head; p != NULL; p = p->pn_next) {
1695     /* every element of this list must be TOK_COLON */
1696     if (p->pn_type != TOK_COLON) {
1697 siliconforks 336 result = -1;
1698     goto done;
1699 siliconforks 116 }
1700    
1701     /* the key must be a string representing the file */
1702     JSParseNode * key = p->pn_left;
1703     if (key->pn_type != TOK_STRING || ! ATOM_IS_STRING(key->pn_atom)) {
1704 siliconforks 336 result = -1;
1705     goto done;
1706 siliconforks 116 }
1707     char * id_bytes = JS_GetStringBytes(ATOM_TO_STRING(key->pn_atom));
1708    
1709     /* the value must be an object literal OR an array */
1710     JSParseNode * value = p->pn_right;
1711     if (! (value->pn_type == TOK_RC || value->pn_type == TOK_RB)) {
1712 siliconforks 336 result = -1;
1713     goto done;
1714 siliconforks 116 }
1715    
1716     JSParseNode * array = NULL;
1717     JSParseNode * source = NULL;
1718     if (value->pn_type == TOK_RB) {
1719     /* an array */
1720     array = value;
1721     }
1722     else if (value->pn_type == TOK_RC) {
1723     /* an object literal */
1724     if (value->pn_count != 2) {
1725 siliconforks 336 result = -1;
1726     goto done;
1727 siliconforks 116 }
1728     for (JSParseNode * element = value->pn_head; element != NULL; element = element->pn_next) {
1729     if (element->pn_type != TOK_COLON) {
1730 siliconforks 336 result = -1;
1731     goto done;
1732 siliconforks 116 }
1733     JSParseNode * left = element->pn_left;
1734     if (left->pn_type != TOK_STRING || ! ATOM_IS_STRING(left->pn_atom)) {
1735 siliconforks 336 result = -1;
1736     goto done;
1737 siliconforks 116 }
1738     const char * s = JS_GetStringBytes(ATOM_TO_STRING(left->pn_atom));
1739     if (strcmp(s, "coverage") == 0) {
1740     array = element->pn_right;
1741     if (array->pn_type != TOK_RB) {
1742 siliconforks 336 result = -1;
1743     goto done;
1744 siliconforks 116 }
1745     }
1746     else if (strcmp(s, "source") == 0) {
1747     source = element->pn_right;
1748 siliconforks 179 if (source->pn_type != TOK_RB) {
1749 siliconforks 336 result = -1;
1750     goto done;
1751 siliconforks 116 }
1752     }
1753     else {
1754 siliconforks 336 result = -1;
1755     goto done;
1756 siliconforks 116 }
1757     }
1758     }
1759     else {
1760 siliconforks 336 result = -1;
1761     goto done;
1762 siliconforks 116 }
1763    
1764     if (array == NULL) {
1765 siliconforks 336 result = -1;
1766     goto done;
1767 siliconforks 116 }
1768    
1769     /* look up the file in the coverage table */
1770     FileCoverage * file_coverage = JS_HashTableLookup(coverage->coverage_table, id_bytes);
1771     if (file_coverage == NULL) {
1772     /* not there: create a new one */
1773     char * id = xstrdup(id_bytes);
1774     file_coverage = xmalloc(sizeof(FileCoverage));
1775     file_coverage->id = id;
1776 siliconforks 179 file_coverage->num_coverage_lines = array->pn_count;
1777     file_coverage->coverage_lines = xnew(int, array->pn_count);
1778 siliconforks 245 file_coverage->source_lines = NULL;
1779 siliconforks 116
1780     /* set coverage for all lines */
1781     uint32 i = 0;
1782     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1783     if (element->pn_type == TOK_NUMBER) {
1784 siliconforks 179 file_coverage->coverage_lines[i] = (int) element->pn_dval;
1785 siliconforks 116 }
1786     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1787 siliconforks 179 file_coverage->coverage_lines[i] = -1;
1788 siliconforks 116 }
1789     else {
1790 siliconforks 336 result = -1;
1791     goto done;
1792 siliconforks 116 }
1793     }
1794     assert(i == array->pn_count);
1795    
1796     /* add to the hash table */
1797     JS_HashTableAdd(coverage->coverage_table, id, file_coverage);
1798     struct FileCoverageList * coverage_list = xmalloc(sizeof(struct FileCoverageList));
1799     coverage_list->file_coverage = file_coverage;
1800     coverage_list->next = coverage->coverage_list;
1801     coverage->coverage_list = coverage_list;
1802     }
1803     else {
1804     /* sanity check */
1805     assert(strcmp(file_coverage->id, id_bytes) == 0);
1806 siliconforks 179 if (file_coverage->num_coverage_lines != array->pn_count) {
1807 siliconforks 336 result = -2;
1808     goto done;
1809 siliconforks 116 }
1810    
1811     /* merge the coverage */
1812     uint32 i = 0;
1813     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1814     if (element->pn_type == TOK_NUMBER) {
1815 siliconforks 179 if (file_coverage->coverage_lines[i] == -1) {
1816 siliconforks 336 result = -2;
1817     goto done;
1818 siliconforks 116 }
1819 siliconforks 179 file_coverage->coverage_lines[i] += (int) element->pn_dval;
1820 siliconforks 116 }
1821     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1822 siliconforks 179 if (file_coverage->coverage_lines[i] != -1) {
1823 siliconforks 336 result = -2;
1824     goto done;
1825 siliconforks 116 }
1826     }
1827     else {
1828 siliconforks 336 result = -1;
1829     goto done;
1830 siliconforks 116 }
1831     }
1832     assert(i == array->pn_count);
1833 siliconforks 245 }
1834 siliconforks 116
1835 siliconforks 245 /* if this JSON file has source, use it */
1836     if (file_coverage->source_lines == NULL && source != NULL) {
1837     file_coverage->num_source_lines = source->pn_count;
1838     file_coverage->source_lines = xnew(char *, source->pn_count);
1839     uint32 i = 0;
1840     for (JSParseNode * element = source->pn_head; element != NULL; element = element->pn_next, i++) {
1841     if (element->pn_type != TOK_STRING) {
1842 siliconforks 336 result = -1;
1843     goto done;
1844 siliconforks 179 }
1845 siliconforks 245 file_coverage->source_lines[i] = xstrdup(JS_GetStringBytes(ATOM_TO_STRING(element->pn_atom)));
1846 siliconforks 116 }
1847 siliconforks 245 assert(i == source->pn_count);
1848 siliconforks 116 }
1849     }
1850    
1851 siliconforks 336 done:
1852     js_FinishParseContext(context, &parse_context);
1853     return result;
1854 siliconforks 116 }

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