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

Annotation of /trunk/instrument-js.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 379 - (hide annotations)
Tue Oct 28 17:50:42 2008 UTC (10 years, 11 months ago) by siliconforks
File MIME type: text/plain
File size: 54019 byte(s)
Add new parameter to output_expression, specifying whether object literals should be parenthesized.
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 379 static void output_expression(JSParseNode * node, Stream * f, bool parenthesize_object_literals);
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 siliconforks 379 output_expression(node->pn_left, f, false);
288 siliconforks 346 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 siliconforks 379 output_expression(p, f, false);
315 siliconforks 357 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 siliconforks 379 output_expression(if_node->pn_kid1, f, false);
324 siliconforks 357 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 siliconforks 379 output_expression(expression, f, false);
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 siliconforks 379 output_expression(function_node, f, false);
439 siliconforks 346 Stream_write_char(f, ')');
440     }
441 siliconforks 2 }
442 siliconforks 346 else {
443 siliconforks 379 output_expression(function_node, f, false);
444 siliconforks 351 }
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 379 output_expression(p, f, false);
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 378 if (p != list->pn_head) {
459     Stream_write_string(f, ", ");
460 siliconforks 340 }
461 siliconforks 379 output_expression(p, f, false);
462 siliconforks 340 }
463     }
464    
465 siliconforks 2 /*
466     See <Expressions> in jsparse.h.
467     TOK_FUNCTION is handled as a statement and as an expression.
468     TOK_DBLDOT is not handled (XML op).
469     TOK_DEFSHARP and TOK_USESHARP are not handled.
470     TOK_ANYNAME is not handled (XML op).
471     TOK_AT is not handled (XML op).
472     TOK_DBLCOLON is not handled.
473     TOK_XML* are not handled.
474     There seem to be some undocumented expressions:
475     TOK_INSTANCEOF binary
476     TOK_IN binary
477     */
478 siliconforks 379 static void output_expression(JSParseNode * node, Stream * f, bool parenthesize_object_literals) {
479 siliconforks 2 switch (node->pn_type) {
480     case TOK_FUNCTION:
481 siliconforks 155 instrument_function(node, f, 0, FUNCTION_NORMAL);
482 siliconforks 2 break;
483     case TOK_COMMA:
484     for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
485     if (p != node->pn_head) {
486 siliconforks 92 Stream_write_string(f, ", ");
487 siliconforks 2 }
488 siliconforks 379 output_expression(p, f, parenthesize_object_literals);
489 siliconforks 2 }
490     break;
491     case TOK_ASSIGN:
492 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
493 siliconforks 92 Stream_write_char(f, ' ');
494 siliconforks 2 switch (node->pn_op) {
495     case JSOP_ADD:
496     case JSOP_SUB:
497     case JSOP_MUL:
498     case JSOP_MOD:
499     case JSOP_LSH:
500     case JSOP_RSH:
501     case JSOP_URSH:
502     case JSOP_BITAND:
503     case JSOP_BITOR:
504     case JSOP_BITXOR:
505     case JSOP_DIV:
506 siliconforks 92 Stream_printf(f, "%s", get_op(node->pn_op));
507 siliconforks 2 break;
508     default:
509     /* do nothing - it must be a simple assignment */
510     break;
511     }
512 siliconforks 92 Stream_write_string(f, "= ");
513 siliconforks 379 output_expression(node->pn_right, f, false);
514 siliconforks 2 break;
515     case TOK_HOOK:
516 siliconforks 379 output_expression(node->pn_kid1, f, parenthesize_object_literals);
517 siliconforks 92 Stream_write_string(f, "? ");
518 siliconforks 379 output_expression(node->pn_kid2, f, false);
519 siliconforks 92 Stream_write_string(f, ": ");
520 siliconforks 379 output_expression(node->pn_kid3, f, false);
521 siliconforks 2 break;
522     case TOK_OR:
523     case TOK_AND:
524     case TOK_BITOR:
525     case TOK_BITXOR:
526     case TOK_BITAND:
527     case TOK_EQOP:
528     case TOK_RELOP:
529     case TOK_SHOP:
530     case TOK_PLUS:
531     case TOK_MINUS:
532     case TOK_STAR:
533     case TOK_DIVOP:
534     switch (node->pn_arity) {
535     case PN_BINARY:
536 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
537 siliconforks 92 Stream_printf(f, " %s ", get_op(node->pn_op));
538 siliconforks 379 output_expression(node->pn_right, f, false);
539 siliconforks 2 break;
540     case PN_LIST:
541     for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
542 siliconforks 379 if (p == node->pn_head) {
543     output_expression(p, f, parenthesize_object_literals);
544     }
545     else {
546 siliconforks 92 Stream_printf(f, " %s ", get_op(node->pn_op));
547 siliconforks 379 output_expression(p, f, false);
548 siliconforks 2 }
549     }
550     break;
551     default:
552     abort();
553     }
554     break;
555     case TOK_UNARYOP:
556     switch (node->pn_op) {
557     case JSOP_NEG:
558 siliconforks 92 Stream_write_char(f, '-');
559 siliconforks 379 output_expression(node->pn_kid, f, false);
560 siliconforks 2 break;
561     case JSOP_POS:
562 siliconforks 92 Stream_write_char(f, '+');
563 siliconforks 379 output_expression(node->pn_kid, f, false);
564 siliconforks 2 break;
565     case JSOP_NOT:
566 siliconforks 92 Stream_write_char(f, '!');
567 siliconforks 379 output_expression(node->pn_kid, f, false);
568 siliconforks 2 break;
569     case JSOP_BITNOT:
570 siliconforks 92 Stream_write_char(f, '~');
571 siliconforks 379 output_expression(node->pn_kid, f, false);
572 siliconforks 2 break;
573     case JSOP_TYPEOF:
574 siliconforks 92 Stream_write_string(f, "typeof ");
575 siliconforks 379 output_expression(node->pn_kid, f, false);
576 siliconforks 2 break;
577     case JSOP_VOID:
578 siliconforks 92 Stream_write_string(f, "void ");
579 siliconforks 379 output_expression(node->pn_kid, f, false);
580 siliconforks 2 break;
581     default:
582 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unknown operator (%d)", node->pn_op);
583 siliconforks 2 break;
584     }
585     break;
586     case TOK_INC:
587     case TOK_DEC:
588     /*
589     This is not documented, but node->pn_op tells whether it is pre- or post-increment.
590     */
591     switch (node->pn_op) {
592     case JSOP_INCNAME:
593     case JSOP_INCPROP:
594     case JSOP_INCELEM:
595 siliconforks 92 Stream_write_string(f, "++");
596 siliconforks 379 output_expression(node->pn_kid, f, false);
597 siliconforks 2 break;
598     case JSOP_DECNAME:
599     case JSOP_DECPROP:
600     case JSOP_DECELEM:
601 siliconforks 92 Stream_write_string(f, "--");
602 siliconforks 379 output_expression(node->pn_kid, f, false);
603 siliconforks 2 break;
604     case JSOP_NAMEINC:
605     case JSOP_PROPINC:
606     case JSOP_ELEMINC:
607 siliconforks 379 output_expression(node->pn_kid, f, parenthesize_object_literals);
608 siliconforks 92 Stream_write_string(f, "++");
609 siliconforks 2 break;
610     case JSOP_NAMEDEC:
611     case JSOP_PROPDEC:
612     case JSOP_ELEMDEC:
613 siliconforks 379 output_expression(node->pn_kid, f, parenthesize_object_literals);
614 siliconforks 92 Stream_write_string(f, "--");
615 siliconforks 2 break;
616     default:
617     abort();
618     break;
619     }
620     break;
621     case TOK_NEW:
622 siliconforks 92 Stream_write_string(f, "new ");
623 siliconforks 2 instrument_function_call(node, f);
624     break;
625     case TOK_DELETE:
626 siliconforks 92 Stream_write_string(f, "delete ");
627 siliconforks 379 output_expression(node->pn_kid, f, false);
628 siliconforks 2 break;
629     case TOK_DOT:
630 siliconforks 378 /* numeric literals must be parenthesized */
631 siliconforks 377 switch (node->pn_expr->pn_type) {
632     case TOK_NUMBER:
633 siliconforks 375 Stream_write_char(f, '(');
634 siliconforks 379 output_expression(node->pn_expr, f, false);
635 siliconforks 375 Stream_write_char(f, ')');
636 siliconforks 377 break;
637     default:
638 siliconforks 379 output_expression(node->pn_expr, f, true);
639 siliconforks 377 break;
640 siliconforks 375 }
641 siliconforks 2 /*
642     This may have originally been x['foo-bar']. Because the string 'foo-bar'
643     contains illegal characters, we have to use the subscript syntax instead of
644     the dot syntax.
645     */
646 siliconforks 84 assert(ATOM_IS_STRING(node->pn_atom));
647     {
648     JSString * s = ATOM_TO_STRING(node->pn_atom);
649 siliconforks 349 bool must_quote;
650     if (JSSTRING_LENGTH(s) == 0) {
651     must_quote = true;
652 siliconforks 84 }
653 siliconforks 349 else if (js_CheckKeyword(JSSTRING_CHARS(s), JSSTRING_LENGTH(s)) != TOK_EOF) {
654     must_quote = true;
655     }
656     else if (! js_IsIdentifier(s)) {
657     must_quote = true;
658     }
659 siliconforks 84 else {
660 siliconforks 349 must_quote = false;
661     }
662     if (must_quote) {
663 siliconforks 92 Stream_write_char(f, '[');
664 siliconforks 84 print_quoted_string_atom(node->pn_atom, f);
665 siliconforks 92 Stream_write_char(f, ']');
666 siliconforks 84 }
667 siliconforks 349 else {
668     Stream_write_char(f, '.');
669     print_string_atom(node->pn_atom, f);
670     }
671 siliconforks 84 }
672 siliconforks 2 break;
673     case TOK_LB:
674 siliconforks 379 output_expression(node->pn_left, f, false);
675 siliconforks 92 Stream_write_char(f, '[');
676 siliconforks 379 output_expression(node->pn_right, f, false);
677 siliconforks 92 Stream_write_char(f, ']');
678 siliconforks 2 break;
679     case TOK_LP:
680     instrument_function_call(node, f);
681     break;
682     case TOK_RB:
683 siliconforks 92 Stream_write_char(f, '[');
684 siliconforks 2 for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
685     if (p != node->pn_head) {
686 siliconforks 92 Stream_write_string(f, ", ");
687 siliconforks 2 }
688     /* TOK_COMMA is a special case: a hole in the array */
689     if (p->pn_type != TOK_COMMA) {
690 siliconforks 379 output_expression(p, f, false);
691 siliconforks 2 }
692     }
693     if (node->pn_extra == PNX_ENDCOMMA) {
694 siliconforks 92 Stream_write_char(f, ',');
695 siliconforks 2 }
696 siliconforks 92 Stream_write_char(f, ']');
697 siliconforks 2 break;
698     case TOK_RC:
699 siliconforks 379 if (parenthesize_object_literals) {
700     Stream_write_char(f, '(');
701     }
702 siliconforks 92 Stream_write_char(f, '{');
703 siliconforks 2 for (struct JSParseNode * p = node->pn_head; p != NULL; p = p->pn_next) {
704 siliconforks 353 if (p->pn_type != TOK_COLON) {
705 siliconforks 370 fatal_source(file_id, p->pn_pos.begin.lineno, "unsupported node type (%d)", p->pn_type);
706 siliconforks 353 }
707 siliconforks 2 if (p != node->pn_head) {
708 siliconforks 92 Stream_write_string(f, ", ");
709 siliconforks 2 }
710 siliconforks 155
711     /* check whether this is a getter or setter */
712     switch (p->pn_op) {
713     case JSOP_GETTER:
714     case JSOP_SETTER:
715 siliconforks 293 if (p->pn_op == JSOP_GETTER) {
716     Stream_write_string(f, "get ");
717     }
718     else {
719     Stream_write_string(f, "set ");
720     }
721 siliconforks 379 output_expression(p->pn_left, f, false);
722 siliconforks 293 if (p->pn_right->pn_type != TOK_FUNCTION) {
723 siliconforks 370 fatal_source(file_id, p->pn_pos.begin.lineno, "expected function");
724 siliconforks 293 }
725 siliconforks 155 instrument_function(p->pn_right, f, 0, FUNCTION_GETTER_OR_SETTER);
726     break;
727     default:
728 siliconforks 379 output_expression(p->pn_left, f, false);
729 siliconforks 155 Stream_write_string(f, ": ");
730 siliconforks 379 output_expression(p->pn_right, f, false);
731 siliconforks 155 break;
732     }
733 siliconforks 2 }
734 siliconforks 92 Stream_write_char(f, '}');
735 siliconforks 379 if (parenthesize_object_literals) {
736     Stream_write_char(f, ')');
737     }
738 siliconforks 2 break;
739     case TOK_RP:
740 siliconforks 92 Stream_write_char(f, '(');
741 siliconforks 379 output_expression(node->pn_kid, f, false);
742 siliconforks 92 Stream_write_char(f, ')');
743 siliconforks 2 break;
744     case TOK_NAME:
745     print_string_atom(node->pn_atom, f);
746 siliconforks 379 if (node->pn_expr != NULL) {
747     Stream_write_string(f, " = ");
748     output_expression(node->pn_expr, f, false);
749     }
750 siliconforks 2 break;
751     case TOK_STRING:
752     print_quoted_string_atom(node->pn_atom, f);
753     break;
754 siliconforks 336 case TOK_REGEXP:
755     assert(node->pn_op == JSOP_REGEXP);
756     {
757     JSObject * object = node->pn_pob->object;
758     jsval result;
759     js_regexp_toString(context, object, &result);
760     print_regex(result, f);
761 siliconforks 2 }
762     break;
763     case TOK_NUMBER:
764     /*
765     A 64-bit IEEE 754 floating point number has a 52-bit fraction.
766     2^(-52) = 2.22 x 10^(-16)
767     Thus there are 16 significant digits.
768     To keep the output simple, special-case zero.
769     */
770     if (node->pn_dval == 0.0) {
771 siliconforks 92 Stream_write_string(f, "0");
772 siliconforks 2 }
773     else {
774 siliconforks 92 Stream_printf(f, "%.15g", node->pn_dval);
775 siliconforks 2 }
776     break;
777     case TOK_PRIMARY:
778     switch (node->pn_op) {
779     case JSOP_TRUE:
780 siliconforks 92 Stream_write_string(f, "true");
781 siliconforks 2 break;
782     case JSOP_FALSE:
783 siliconforks 92 Stream_write_string(f, "false");
784 siliconforks 2 break;
785     case JSOP_NULL:
786 siliconforks 92 Stream_write_string(f, "null");
787 siliconforks 2 break;
788     case JSOP_THIS:
789 siliconforks 92 Stream_write_string(f, "this");
790 siliconforks 2 break;
791     /* jsscan.h mentions `super' ??? */
792     default:
793     abort();
794     }
795     break;
796     case TOK_INSTANCEOF:
797 siliconforks 379 output_expression(node->pn_left, f, parenthesize_object_literals);
798 siliconforks 92 Stream_write_string(f, " instanceof ");
799 siliconforks 379 output_expression(node->pn_right, f, false);
800 siliconforks 2 break;
801     case TOK_IN:
802 siliconforks 379 output_expression(node->pn_left, f, false);
803 siliconforks 92 Stream_write_string(f, " in ");
804 siliconforks 379 output_expression(node->pn_right, f, false);
805 siliconforks 2 break;
806 siliconforks 340 case TOK_LEXICALSCOPE:
807     assert(node->pn_arity == PN_NAME);
808     assert(node->pn_expr->pn_type == TOK_LET);
809     assert(node->pn_expr->pn_arity == PN_BINARY);
810     Stream_write_string(f, "let(");
811     assert(node->pn_expr->pn_left->pn_type == TOK_LP);
812     assert(node->pn_expr->pn_left->pn_arity == PN_LIST);
813     instrument_declarations(node->pn_expr->pn_left, f);
814     Stream_write_string(f, ") ");
815 siliconforks 379 output_expression(node->pn_expr->pn_right, f, true);
816 siliconforks 340 break;
817 siliconforks 342 case TOK_YIELD:
818     assert(node->pn_arity == PN_UNARY);
819 siliconforks 355 Stream_write_string(f, "yield");
820     if (node->pn_kid != NULL) {
821     Stream_write_char(f, ' ');
822 siliconforks 379 output_expression(node->pn_kid, f, true);
823 siliconforks 355 }
824 siliconforks 342 break;
825 siliconforks 343 case TOK_ARRAYCOMP:
826     assert(node->pn_arity == PN_LIST);
827     {
828     JSParseNode * block_node;
829     switch (node->pn_count) {
830     case 1:
831     block_node = node->pn_head;
832     break;
833     case 2:
834     block_node = node->pn_head->pn_next;
835     break;
836     default:
837     abort();
838     break;
839     }
840     Stream_write_char(f, '[');
841 siliconforks 357 output_array_comprehension_or_generator_expression(block_node, f);
842 siliconforks 343 Stream_write_char(f, ']');
843     }
844     break;
845     case TOK_VAR:
846     assert(node->pn_arity == PN_LIST);
847     Stream_write_string(f, "var ");
848     instrument_declarations(node, f);
849     break;
850     case TOK_LET:
851     assert(node->pn_arity == PN_LIST);
852     Stream_write_string(f, "let ");
853     instrument_declarations(node, f);
854     break;
855 siliconforks 2 default:
856 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
857 siliconforks 2 }
858     }
859    
860 siliconforks 240 static void output_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
861 siliconforks 2 switch (node->pn_type) {
862     case TOK_FUNCTION:
863 siliconforks 155 instrument_function(node, f, indent, FUNCTION_NORMAL);
864 siliconforks 2 break;
865     case TOK_LC:
866     assert(node->pn_arity == PN_LIST);
867     /*
868 siliconforks 92 Stream_write_string(f, "{\n");
869 siliconforks 2 */
870     for (struct JSParseNode * p = node->pn_u.list.head; p != NULL; p = p->pn_next) {
871 siliconforks 240 instrument_statement(p, f, indent, false);
872 siliconforks 2 }
873     /*
874 siliconforks 92 Stream_printf(f, "%*s", indent, "");
875     Stream_write_string(f, "}\n");
876 siliconforks 2 */
877     break;
878     case TOK_IF:
879 siliconforks 240 {
880 siliconforks 2 assert(node->pn_arity == PN_TERNARY);
881 siliconforks 240
882     uint16_t line = node->pn_pos.begin.lineno;
883     if (! is_jscoverage_if) {
884     if (line > num_lines) {
885 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
886 siliconforks 240 }
887     if (line >= 2 && exclusive_directives[line - 2]) {
888     is_jscoverage_if = true;
889     }
890     }
891    
892 siliconforks 92 Stream_printf(f, "%*s", indent, "");
893     Stream_write_string(f, "if (");
894 siliconforks 379 output_expression(node->pn_kid1, f, false);
895 siliconforks 92 Stream_write_string(f, ") {\n");
896 siliconforks 240 if (is_jscoverage_if && node->pn_kid3) {
897     uint16_t else_start = node->pn_kid3->pn_pos.begin.lineno;
898     uint16_t else_end = node->pn_kid3->pn_pos.end.lineno + 1;
899     Stream_printf(f, "%*s", indent + 2, "");
900     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, else_start, else_end);
901     }
902     instrument_statement(node->pn_kid2, f, indent + 2, false);
903 siliconforks 92 Stream_printf(f, "%*s", indent, "");
904     Stream_write_string(f, "}\n");
905 siliconforks 240
906     if (node->pn_kid3 || is_jscoverage_if) {
907 siliconforks 92 Stream_printf(f, "%*s", indent, "");
908     Stream_write_string(f, "else {\n");
909 siliconforks 240
910     if (is_jscoverage_if) {
911     uint16_t if_start = node->pn_kid2->pn_pos.begin.lineno + 1;
912     uint16_t if_end = node->pn_kid2->pn_pos.end.lineno + 1;
913     Stream_printf(f, "%*s", indent + 2, "");
914     Stream_printf(f, "_$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_start, if_end);
915     }
916    
917     if (node->pn_kid3) {
918     instrument_statement(node->pn_kid3, f, indent + 2, is_jscoverage_if);
919     }
920    
921 siliconforks 92 Stream_printf(f, "%*s", indent, "");
922     Stream_write_string(f, "}\n");
923 siliconforks 2 }
924 siliconforks 240
925 siliconforks 2 break;
926 siliconforks 240 }
927 siliconforks 2 case TOK_SWITCH:
928     assert(node->pn_arity == PN_BINARY);
929 siliconforks 92 Stream_printf(f, "%*s", indent, "");
930     Stream_write_string(f, "switch (");
931 siliconforks 379 output_expression(node->pn_left, f, false);
932 siliconforks 92 Stream_write_string(f, ") {\n");
933 siliconforks 350 {
934     JSParseNode * list = node->pn_right;
935     if (list->pn_type == TOK_LEXICALSCOPE) {
936     list = list->pn_expr;
937 siliconforks 2 }
938 siliconforks 350 for (struct JSParseNode * p = list->pn_head; p != NULL; p = p->pn_next) {
939     Stream_printf(f, "%*s", indent, "");
940     switch (p->pn_type) {
941     case TOK_CASE:
942     Stream_write_string(f, "case ");
943 siliconforks 379 output_expression(p->pn_left, f, false);
944 siliconforks 350 Stream_write_string(f, ":\n");
945     break;
946     case TOK_DEFAULT:
947     Stream_write_string(f, "default:\n");
948     break;
949     default:
950     abort();
951     break;
952     }
953     instrument_statement(p->pn_right, f, indent + 2, false);
954     }
955 siliconforks 2 }
956 siliconforks 92 Stream_printf(f, "%*s", indent, "");
957     Stream_write_string(f, "}\n");
958 siliconforks 2 break;
959     case TOK_CASE:
960     case TOK_DEFAULT:
961     abort();
962     break;
963     case TOK_WHILE:
964     assert(node->pn_arity == PN_BINARY);
965 siliconforks 92 Stream_printf(f, "%*s", indent, "");
966     Stream_write_string(f, "while (");
967 siliconforks 379 output_expression(node->pn_left, f, false);
968 siliconforks 92 Stream_write_string(f, ") {\n");
969 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
970 siliconforks 92 Stream_write_string(f, "}\n");
971 siliconforks 2 break;
972     case TOK_DO:
973     assert(node->pn_arity == PN_BINARY);
974 siliconforks 92 Stream_printf(f, "%*s", indent, "");
975     Stream_write_string(f, "do {\n");
976 siliconforks 240 instrument_statement(node->pn_left, f, indent + 2, false);
977 siliconforks 92 Stream_write_string(f, "}\n");
978     Stream_printf(f, "%*s", indent, "");
979     Stream_write_string(f, "while (");
980 siliconforks 379 output_expression(node->pn_right, f, false);
981 siliconforks 92 Stream_write_string(f, ");\n");
982 siliconforks 2 break;
983     case TOK_FOR:
984     assert(node->pn_arity == PN_BINARY);
985 siliconforks 92 Stream_printf(f, "%*s", indent, "");
986 siliconforks 2 switch (node->pn_left->pn_type) {
987     case TOK_IN:
988     /* for/in */
989     assert(node->pn_left->pn_arity == PN_BINARY);
990 siliconforks 343 output_for_in(node, f);
991 siliconforks 2 break;
992     case TOK_RESERVED:
993     /* for (;;) */
994     assert(node->pn_left->pn_arity == PN_TERNARY);
995 siliconforks 343 Stream_write_string(f, "for (");
996 siliconforks 2 if (node->pn_left->pn_kid1) {
997 siliconforks 379 output_expression(node->pn_left->pn_kid1, f, false);
998 siliconforks 2 }
999 siliconforks 92 Stream_write_string(f, ";");
1000 siliconforks 2 if (node->pn_left->pn_kid2) {
1001 siliconforks 92 Stream_write_char(f, ' ');
1002 siliconforks 379 output_expression(node->pn_left->pn_kid2, f, false);
1003 siliconforks 2 }
1004 siliconforks 92 Stream_write_string(f, ";");
1005 siliconforks 2 if (node->pn_left->pn_kid3) {
1006 siliconforks 92 Stream_write_char(f, ' ');
1007 siliconforks 379 output_expression(node->pn_left->pn_kid3, f, false);
1008 siliconforks 2 }
1009 siliconforks 343 Stream_write_char(f, ')');
1010 siliconforks 2 break;
1011     default:
1012     abort();
1013     break;
1014     }
1015 siliconforks 343 Stream_write_string(f, " {\n");
1016 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1017 siliconforks 92 Stream_write_string(f, "}\n");
1018 siliconforks 2 break;
1019     case TOK_THROW:
1020     assert(node->pn_arity == PN_UNARY);
1021 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1022     Stream_write_string(f, "throw ");
1023 siliconforks 379 output_expression(node->pn_u.unary.kid, f, false);
1024 siliconforks 92 Stream_write_string(f, ";\n");
1025 siliconforks 2 break;
1026     case TOK_TRY:
1027 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1028     Stream_write_string(f, "try {\n");
1029 siliconforks 240 instrument_statement(node->pn_kid1, f, indent + 2, false);
1030 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1031     Stream_write_string(f, "}\n");
1032 siliconforks 336 if (node->pn_kid2) {
1033     assert(node->pn_kid2->pn_type == TOK_RESERVED);
1034     for (JSParseNode * scope = node->pn_kid2->pn_head; scope != NULL; scope = scope->pn_next) {
1035     assert(scope->pn_type == TOK_LEXICALSCOPE);
1036     JSParseNode * catch = scope->pn_expr;
1037 siliconforks 2 assert(catch->pn_type == TOK_CATCH);
1038 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1039     Stream_write_string(f, "catch (");
1040 siliconforks 379 output_expression(catch->pn_kid1, f, false);
1041 siliconforks 336 if (catch->pn_kid2) {
1042 siliconforks 92 Stream_write_string(f, " if ");
1043 siliconforks 379 output_expression(catch->pn_kid2, f, false);
1044 siliconforks 2 }
1045 siliconforks 92 Stream_write_string(f, ") {\n");
1046 siliconforks 240 instrument_statement(catch->pn_kid3, f, indent + 2, false);
1047 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1048     Stream_write_string(f, "}\n");
1049 siliconforks 2 }
1050     }
1051     if (node->pn_kid3) {
1052 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1053     Stream_write_string(f, "finally {\n");
1054 siliconforks 240 instrument_statement(node->pn_kid3, f, indent + 2, false);
1055 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1056     Stream_write_string(f, "}\n");
1057 siliconforks 2 }
1058     break;
1059     case TOK_CATCH:
1060     abort();
1061     break;
1062     case TOK_BREAK:
1063     case TOK_CONTINUE:
1064     assert(node->pn_arity == PN_NAME || node->pn_arity == PN_NULLARY);
1065 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1066     Stream_write_string(f, node->pn_type == TOK_BREAK? "break": "continue");
1067 siliconforks 2 JSAtom * atom = node->pn_u.name.atom;
1068     if (atom != NULL) {
1069 siliconforks 92 Stream_write_char(f, ' ');
1070 siliconforks 2 print_string_atom(node->pn_atom, f);
1071     }
1072 siliconforks 92 Stream_write_string(f, ";\n");
1073 siliconforks 2 break;
1074     case TOK_WITH:
1075     assert(node->pn_arity == PN_BINARY);
1076 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1077     Stream_write_string(f, "with (");
1078 siliconforks 379 output_expression(node->pn_left, f, false);
1079 siliconforks 92 Stream_write_string(f, ") {\n");
1080 siliconforks 240 instrument_statement(node->pn_right, f, indent + 2, false);
1081 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1082     Stream_write_string(f, "}\n");
1083 siliconforks 2 break;
1084     case TOK_VAR:
1085 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1086 siliconforks 379 output_expression(node, f, false);
1087 siliconforks 92 Stream_write_string(f, ";\n");
1088 siliconforks 2 break;
1089     case TOK_RETURN:
1090     assert(node->pn_arity == PN_UNARY);
1091 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1092     Stream_write_string(f, "return");
1093 siliconforks 2 if (node->pn_kid != NULL) {
1094 siliconforks 92 Stream_write_char(f, ' ');
1095 siliconforks 379 output_expression(node->pn_kid, f, true);
1096 siliconforks 2 }
1097 siliconforks 92 Stream_write_string(f, ";\n");
1098 siliconforks 2 break;
1099     case TOK_SEMI:
1100     assert(node->pn_arity == PN_UNARY);
1101 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1102 siliconforks 2 if (node->pn_kid != NULL) {
1103 siliconforks 379 output_expression(node->pn_kid, f, true);
1104 siliconforks 2 }
1105 siliconforks 92 Stream_write_string(f, ";\n");
1106 siliconforks 2 break;
1107     case TOK_COLON:
1108 siliconforks 376 {
1109 siliconforks 2 assert(node->pn_arity == PN_NAME);
1110 siliconforks 92 Stream_printf(f, "%*s", indent < 2? 0: indent - 2, "");
1111 siliconforks 2 print_string_atom(node->pn_atom, f);
1112 siliconforks 92 Stream_write_string(f, ":\n");
1113 siliconforks 376 JSParseNode * labelled = node->pn_expr;
1114     if (labelled->pn_type == TOK_LEXICALSCOPE) {
1115     labelled = labelled->pn_expr;
1116     }
1117     if (labelled->pn_type == TOK_LC) {
1118     /* labelled block */
1119     Stream_printf(f, "%*s", indent, "");
1120     Stream_write_string(f, "{\n");
1121     instrument_statement(labelled, f, indent + 2, false);
1122     Stream_printf(f, "%*s", indent, "");
1123     Stream_write_string(f, "}\n");
1124     }
1125     else {
1126     /*
1127     This one is tricky: can't output instrumentation between the label and the
1128     statement it's supposed to label, so use output_statement instead of
1129     instrument_statement.
1130     */
1131     output_statement(labelled, f, indent, false);
1132     }
1133 siliconforks 2 break;
1134 siliconforks 376 }
1135 siliconforks 340 case TOK_LEXICALSCOPE:
1136     /* let statement */
1137     assert(node->pn_arity == PN_NAME);
1138     switch (node->pn_expr->pn_type) {
1139     case TOK_LET:
1140     /* let statement */
1141     assert(node->pn_expr->pn_arity == PN_BINARY);
1142     instrument_statement(node->pn_expr, f, indent, false);
1143     break;
1144     case TOK_LC:
1145     /* block */
1146     Stream_printf(f, "%*s", indent, "");
1147     Stream_write_string(f, "{\n");
1148     instrument_statement(node->pn_expr, f, indent + 2, false);
1149     Stream_printf(f, "%*s", indent, "");
1150     Stream_write_string(f, "}\n");
1151     break;
1152     case TOK_FOR:
1153     instrument_statement(node->pn_expr, f, indent, false);
1154     break;
1155     default:
1156     abort();
1157     break;
1158     }
1159     break;
1160     case TOK_LET:
1161     switch (node->pn_arity) {
1162     case PN_BINARY:
1163     /* let statement */
1164     Stream_printf(f, "%*s", indent, "");
1165     Stream_write_string(f, "let (");
1166     assert(node->pn_left->pn_type == TOK_LP);
1167     assert(node->pn_left->pn_arity == PN_LIST);
1168     instrument_declarations(node->pn_left, f);
1169     Stream_write_string(f, ") {\n");
1170     instrument_statement(node->pn_right, f, indent + 2, false);
1171     Stream_printf(f, "%*s", indent, "");
1172     Stream_write_string(f, "}\n");
1173     break;
1174     case PN_LIST:
1175     /* let definition */
1176 siliconforks 343 Stream_printf(f, "%*s", indent, "");
1177 siliconforks 379 output_expression(node, f, false);
1178 siliconforks 340 Stream_write_string(f, ";\n");
1179     break;
1180     default:
1181     abort();
1182     break;
1183     }
1184     break;
1185 siliconforks 348 case TOK_DEBUGGER:
1186     Stream_printf(f, "%*s", indent, "");
1187     Stream_write_string(f, "debugger;\n");
1188     break;
1189 siliconforks 2 default:
1190 siliconforks 370 fatal_source(file_id, node->pn_pos.begin.lineno, "unsupported node type (%d)", node->pn_type);
1191 siliconforks 2 }
1192     }
1193    
1194     /*
1195     See <Statements> in jsparse.h.
1196     TOK_FUNCTION is handled as a statement and as an expression.
1197     TOK_EXPORT, TOK_IMPORT are not handled.
1198     */
1199 siliconforks 240 static void instrument_statement(JSParseNode * node, Stream * f, int indent, bool is_jscoverage_if) {
1200 siliconforks 340 if (node->pn_type != TOK_LC && node->pn_type != TOK_LEXICALSCOPE) {
1201 siliconforks 214 uint16_t line = node->pn_pos.begin.lineno;
1202     if (line > num_lines) {
1203 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1204 siliconforks 214 }
1205    
1206 siliconforks 2 /* the root node has line number 0 */
1207     if (line != 0) {
1208 siliconforks 92 Stream_printf(f, "%*s", indent, "");
1209     Stream_printf(f, "_$jscoverage['%s'][%d]++;\n", file_id, line);
1210 siliconforks 2 lines[line - 1] = 1;
1211     }
1212     }
1213 siliconforks 240 output_statement(node, f, indent, is_jscoverage_if);
1214 siliconforks 2 }
1215    
1216 siliconforks 190 static bool characters_start_with(const jschar * characters, size_t line_start, size_t line_end, const char * prefix) {
1217     const jschar * characters_end = characters + line_end;
1218     const jschar * cp = characters + line_start;
1219     const char * bp = prefix;
1220     for (;;) {
1221     if (*bp == '\0') {
1222     return true;
1223     }
1224     else if (cp == characters_end) {
1225     return false;
1226     }
1227     else if (*cp != *bp) {
1228     return false;
1229     }
1230     bp++;
1231     cp++;
1232     }
1233     }
1234    
1235 siliconforks 240 static bool characters_are_white_space(const jschar * characters, size_t line_start, size_t line_end) {
1236     /* XXX - other Unicode space */
1237     const jschar * end = characters + line_end;
1238     for (const jschar * p = characters + line_start; p < end; p++) {
1239     jschar c = *p;
1240     if (c == 0x9 || c == 0xB || c == 0xC || c == 0x20 || c == 0xA0) {
1241     continue;
1242     }
1243     else {
1244     return false;
1245     }
1246     }
1247     return true;
1248     }
1249    
1250 siliconforks 284 static void error_reporter(JSContext * context, const char * message, JSErrorReport * report) {
1251 siliconforks 372 warn_source(file_id, report->lineno, "%s", message);
1252 siliconforks 284 }
1253    
1254 siliconforks 179 void jscoverage_instrument_js(const char * id, const uint16_t * characters, size_t num_characters, Stream * output) {
1255 siliconforks 2 file_id = id;
1256    
1257 siliconforks 336 /* parse the javascript */
1258     JSParseContext parse_context;
1259     if (! js_InitParseContext(context, &parse_context, NULL, NULL, characters, num_characters, NULL, NULL, 1)) {
1260 siliconforks 370 fatal("cannot create token stream from file %s", file_id);
1261 siliconforks 2 }
1262 siliconforks 284 JSErrorReporter old_error_reporter = JS_SetErrorReporter(context, error_reporter);
1263 siliconforks 336 JSParseNode * node = js_ParseScript(context, global, &parse_context);
1264 siliconforks 2 if (node == NULL) {
1265 siliconforks 284 js_ReportUncaughtException(context);
1266 siliconforks 370 fatal("parse error in file %s", file_id);
1267 siliconforks 2 }
1268 siliconforks 284 JS_SetErrorReporter(context, old_error_reporter);
1269 siliconforks 214 num_lines = node->pn_pos.end.lineno;
1270 siliconforks 2 lines = xmalloc(num_lines);
1271 siliconforks 240 for (unsigned int i = 0; i < num_lines; i++) {
1272 siliconforks 2 lines[i] = 0;
1273     }
1274    
1275 siliconforks 240 /* search code for conditionals */
1276     exclusive_directives = xnew(bool, num_lines);
1277     for (unsigned int i = 0; i < num_lines; i++) {
1278     exclusive_directives[i] = false;
1279 siliconforks 2 }
1280    
1281 siliconforks 157 bool has_conditionals = false;
1282 siliconforks 240 struct IfDirective * if_directives = NULL;
1283 siliconforks 157 size_t line_number = 0;
1284     size_t i = 0;
1285 siliconforks 176 while (i < num_characters) {
1286 siliconforks 240 if (line_number == UINT16_MAX) {
1287 siliconforks 370 fatal("file %s contains more than 65,535 lines", file_id);
1288 siliconforks 240 }
1289 siliconforks 157 line_number++;
1290     size_t line_start = i;
1291 siliconforks 190 jschar c;
1292     bool done = false;
1293     while (! done && i < num_characters) {
1294     c = characters[i];
1295     switch (c) {
1296     case '\r':
1297     case '\n':
1298     case 0x2028:
1299     case 0x2029:
1300     done = true;
1301     break;
1302     default:
1303     i++;
1304     }
1305 siliconforks 157 }
1306     size_t line_end = i;
1307 siliconforks 176 if (i < num_characters) {
1308 siliconforks 190 i++;
1309     if (c == '\r' && i < num_characters && characters[i] == '\n') {
1310 siliconforks 157 i++;
1311     }
1312     }
1313 siliconforks 240
1314 siliconforks 190 if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_IF")) {
1315 siliconforks 240 has_conditionals = true;
1316    
1317     if (characters_are_white_space(characters, line_start + 16, line_end)) {
1318     exclusive_directives[line_number - 1] = true;
1319 siliconforks 157 }
1320 siliconforks 240 else {
1321     struct IfDirective * if_directive = xnew(struct IfDirective, 1);
1322     if_directive->condition_start = characters + line_start + 16;
1323     if_directive->condition_end = characters + line_end;
1324     if_directive->start_line = line_number;
1325     if_directive->end_line = 0;
1326     if_directive->next = if_directives;
1327     if_directives = if_directive;
1328 siliconforks 190 }
1329 siliconforks 157 }
1330 siliconforks 190 else if (characters_start_with(characters, line_start, line_end, "//#JSCOVERAGE_ENDIF")) {
1331 siliconforks 240 for (struct IfDirective * p = if_directives; p != NULL; p = p->next) {
1332     if (p->end_line == 0) {
1333     p->end_line = line_number;
1334     break;
1335     }
1336     }
1337 siliconforks 157 }
1338     }
1339    
1340 siliconforks 240 /*
1341     An instrumented JavaScript file has 4 sections:
1342     1. initialization
1343     2. instrumented source code
1344     3. conditionals
1345     4. original source code
1346     */
1347    
1348     Stream * instrumented = Stream_new(0);
1349     instrument_statement(node, instrumented, 0, false);
1350 siliconforks 336 js_FinishParseContext(context, &parse_context);
1351 siliconforks 240
1352     /* write line number info to the output */
1353     Stream_write_string(output, "/* automatically generated by JSCoverage - do not edit */\n");
1354 siliconforks 361 if (jscoverage_mozilla) {
1355     Stream_write_string(output, "try {\n");
1356     Stream_write_string(output, " Components.utils.import('resource://gre/modules/jscoverage.jsm');\n");
1357     Stream_printf(output, " dump('%s: successfully imported jscoverage module\\n');\n", id);
1358     Stream_write_string(output, "}\n");
1359     Stream_write_string(output, "catch (e) {\n");
1360     Stream_write_string(output, " _$jscoverage = {};\n");
1361     Stream_printf(output, " dump('%s: failed to import jscoverage module - coverage not available for this file\\n');\n", id);
1362     Stream_write_string(output, "}\n");
1363     }
1364     else {
1365     Stream_write_string(output, "if (! top._$jscoverage) {\n top._$jscoverage = {};\n}\n");
1366     Stream_write_string(output, "var _$jscoverage = top._$jscoverage;\n");
1367     }
1368 siliconforks 240 Stream_printf(output, "if (! _$jscoverage['%s']) {\n", file_id);
1369     Stream_printf(output, " _$jscoverage['%s'] = [];\n", file_id);
1370     for (int i = 0; i < num_lines; i++) {
1371     if (lines[i]) {
1372     Stream_printf(output, " _$jscoverage['%s'][%d] = 0;\n", file_id, i + 1);
1373     }
1374     }
1375     Stream_write_string(output, "}\n");
1376     free(lines);
1377     lines = NULL;
1378     free(exclusive_directives);
1379     exclusive_directives = NULL;
1380    
1381     /* conditionals */
1382     if (has_conditionals) {
1383     Stream_printf(output, "_$jscoverage['%s'].conditionals = [];\n", file_id);
1384     }
1385    
1386     /* copy the instrumented source code to the output */
1387     Stream_write(output, instrumented->data, instrumented->length);
1388    
1389     /* conditionals */
1390     for (struct IfDirective * if_directive = if_directives; if_directive != NULL; if_directive = if_directive->next) {
1391     Stream_write_string(output, "if (!(");
1392 siliconforks 246 print_javascript(if_directive->condition_start, if_directive->condition_end - if_directive->condition_start, output);
1393 siliconforks 240 Stream_write_string(output, ")) {\n");
1394     Stream_printf(output, " _$jscoverage['%s'].conditionals[%d] = %d;\n", file_id, if_directive->start_line, if_directive->end_line);
1395     Stream_write_string(output, "}\n");
1396     }
1397    
1398     /* free */
1399     while (if_directives != NULL) {
1400     struct IfDirective * if_directive = if_directives;
1401     if_directives = if_directives->next;
1402     free(if_directive);
1403     }
1404    
1405 siliconforks 95 /* copy the original source to the output */
1406 siliconforks 179 Stream_printf(output, "_$jscoverage['%s'].source = ", file_id);
1407     jscoverage_write_source(id, characters, num_characters, output);
1408     Stream_printf(output, ";\n");
1409 siliconforks 95
1410 siliconforks 179 Stream_delete(instrumented);
1411    
1412     file_id = NULL;
1413     }
1414    
1415     void jscoverage_write_source(const char * id, const jschar * characters, size_t num_characters, Stream * output) {
1416     Stream_write_string(output, "[");
1417     if (jscoverage_highlight) {
1418     Stream * highlighted_stream = Stream_new(num_characters);
1419     jscoverage_highlight_js(context, id, characters, num_characters, highlighted_stream);
1420     size_t i = 0;
1421     while (i < highlighted_stream->length) {
1422     if (i > 0) {
1423     Stream_write_char(output, ',');
1424     }
1425    
1426     Stream_write_char(output, '"');
1427     bool done = false;
1428     while (! done) {
1429     char c = highlighted_stream->data[i];
1430     switch (c) {
1431     case 0x8:
1432     /* backspace */
1433     Stream_write_string(output, "\\b");
1434     break;
1435     case 0x9:
1436     /* horizontal tab */
1437     Stream_write_string(output, "\\t");
1438     break;
1439     case 0xa:
1440     /* line feed (new line) */
1441     done = true;
1442     break;
1443 siliconforks 317 /* IE doesn't support this */
1444     /*
1445 siliconforks 179 case 0xb:
1446     Stream_write_string(output, "\\v");
1447     break;
1448 siliconforks 317 */
1449 siliconforks 179 case 0xc:
1450     /* form feed */
1451     Stream_write_string(output, "\\f");
1452     break;
1453     case 0xd:
1454     /* carriage return */
1455     done = true;
1456     if (i + 1 < highlighted_stream->length && highlighted_stream->data[i + 1] == '\n') {
1457     i++;
1458     }
1459     break;
1460     case '"':
1461     Stream_write_string(output, "\\\"");
1462     break;
1463     case '\\':
1464     Stream_write_string(output, "\\\\");
1465     break;
1466     default:
1467     Stream_write_char(output, c);
1468     break;
1469     }
1470 siliconforks 95 i++;
1471 siliconforks 179 if (i >= highlighted_stream->length) {
1472     done = true;
1473 siliconforks 95 }
1474     }
1475 siliconforks 179 Stream_write_char(output, '"');
1476     }
1477     Stream_delete(highlighted_stream);
1478     }
1479     else {
1480     size_t i = 0;
1481     while (i < num_characters) {
1482     if (i > 0) {
1483     Stream_write_char(output, ',');
1484     }
1485    
1486     Stream_write_char(output, '"');
1487     bool done = false;
1488     while (! done) {
1489     jschar c = characters[i];
1490     switch (c) {
1491     case 0x8:
1492     /* backspace */
1493     Stream_write_string(output, "\\b");
1494     break;
1495     case 0x9:
1496     /* horizontal tab */
1497     Stream_write_string(output, "\\t");
1498     break;
1499     case 0xa:
1500     /* line feed (new line) */
1501     done = true;
1502     break;
1503 siliconforks 317 /* IE doesn't support this */
1504     /*
1505 siliconforks 179 case 0xb:
1506     Stream_write_string(output, "\\v");
1507     break;
1508 siliconforks 317 */
1509 siliconforks 179 case 0xc:
1510     /* form feed */
1511     Stream_write_string(output, "\\f");
1512     break;
1513     case 0xd:
1514     /* carriage return */
1515     done = true;
1516     if (i + 1 < num_characters && characters[i + 1] == '\n') {
1517     i++;
1518     }
1519     break;
1520     case '"':
1521     Stream_write_string(output, "\\\"");
1522     break;
1523     case '\\':
1524     Stream_write_string(output, "\\\\");
1525     break;
1526     case '&':
1527     Stream_write_string(output, "&amp;");
1528     break;
1529     case '<':
1530     Stream_write_string(output, "&lt;");
1531     break;
1532     case '>':
1533     Stream_write_string(output, "&gt;");
1534     break;
1535     case 0x2028:
1536     case 0x2029:
1537     done = true;
1538     break;
1539     default:
1540     if (32 <= c && c <= 126) {
1541     Stream_write_char(output, c);
1542     }
1543     else {
1544     Stream_printf(output, "&#%d;", c);
1545     }
1546     break;
1547     }
1548 siliconforks 95 i++;
1549 siliconforks 179 if (i >= num_characters) {
1550     done = true;
1551     }
1552 siliconforks 95 }
1553 siliconforks 179 Stream_write_char(output, '"');
1554 siliconforks 95 }
1555     }
1556 siliconforks 179 Stream_write_string(output, "]");
1557 siliconforks 2 }
1558 siliconforks 116
1559     void jscoverage_copy_resources(const char * destination_directory) {
1560     copy_resource("jscoverage.html", destination_directory);
1561     copy_resource("jscoverage.css", destination_directory);
1562     copy_resource("jscoverage.js", destination_directory);
1563 siliconforks 169 copy_resource("jscoverage-ie.css", destination_directory);
1564 siliconforks 116 copy_resource("jscoverage-throbber.gif", destination_directory);
1565 siliconforks 179 copy_resource("jscoverage-highlight.css", destination_directory);
1566 siliconforks 116 }
1567    
1568     /*
1569     coverage reports
1570     */
1571    
1572     struct FileCoverageList {
1573     FileCoverage * file_coverage;
1574     struct FileCoverageList * next;
1575     };
1576    
1577     struct Coverage {
1578     JSHashTable * coverage_table;
1579     struct FileCoverageList * coverage_list;
1580     };
1581    
1582     static int compare_strings(const void * p1, const void * p2) {
1583     return strcmp(p1, p2) == 0;
1584     }
1585    
1586     Coverage * Coverage_new(void) {
1587     Coverage * result = xmalloc(sizeof(Coverage));
1588     result->coverage_table = JS_NewHashTable(1024, JS_HashString, compare_strings, NULL, NULL, NULL);
1589     if (result->coverage_table == NULL) {
1590     fatal("cannot create hash table");
1591     }
1592     result->coverage_list = NULL;
1593     return result;
1594     }
1595    
1596     void Coverage_delete(Coverage * coverage) {
1597     JS_HashTableDestroy(coverage->coverage_table);
1598     struct FileCoverageList * p = coverage->coverage_list;
1599     while (p != NULL) {
1600 siliconforks 179 free(p->file_coverage->coverage_lines);
1601     if (p->file_coverage->source_lines != NULL) {
1602     for (uint32 i = 0; i < p->file_coverage->num_source_lines; i++) {
1603     free(p->file_coverage->source_lines[i]);
1604     }
1605     free(p->file_coverage->source_lines);
1606     }
1607 siliconforks 116 free(p->file_coverage->id);
1608     free(p->file_coverage);
1609     struct FileCoverageList * q = p;
1610     p = p->next;
1611     free(q);
1612     }
1613     free(coverage);
1614     }
1615    
1616     struct EnumeratorArg {
1617     CoverageForeachFunction f;
1618     void * p;
1619     };
1620    
1621     static intN enumerator(JSHashEntry * entry, intN i, void * arg) {
1622     struct EnumeratorArg * enumerator_arg = arg;
1623     enumerator_arg->f(entry->value, i, enumerator_arg->p);
1624     return 0;
1625     }
1626    
1627     void Coverage_foreach_file(Coverage * coverage, CoverageForeachFunction f, void * p) {
1628     struct EnumeratorArg enumerator_arg;
1629     enumerator_arg.f = f;
1630     enumerator_arg.p = p;
1631     JS_HashTableEnumerateEntries(coverage->coverage_table, enumerator, &enumerator_arg);
1632     }
1633    
1634     int jscoverage_parse_json(Coverage * coverage, const uint8_t * json, size_t length) {
1635 siliconforks 336 int result = 0;
1636    
1637 siliconforks 116 jschar * base = js_InflateString(context, (char *) json, &length);
1638     if (base == NULL) {
1639     fatal("out of memory");
1640     }
1641    
1642     jschar * parenthesized_json = xnew(jschar, addst(length, 2));
1643     parenthesized_json[0] = '(';
1644     memcpy(parenthesized_json + 1, base, mulst(length, sizeof(jschar)));
1645     parenthesized_json[length + 1] = ')';
1646    
1647     JS_free(context, base);
1648    
1649 siliconforks 336 JSParseContext parse_context;
1650     if (! js_InitParseContext(context, &parse_context, NULL, NULL, parenthesized_json, length + 2, NULL, NULL, 1)) {
1651     free(parenthesized_json);
1652     return -1;
1653 siliconforks 116 }
1654 siliconforks 336 JSParseNode * root = js_ParseScript(context, global, &parse_context);
1655 siliconforks 116 free(parenthesized_json);
1656     if (root == NULL) {
1657 siliconforks 336 result = -1;
1658     goto done;
1659 siliconforks 116 }
1660    
1661     /* root node must be TOK_LC */
1662     if (root->pn_type != TOK_LC) {
1663 siliconforks 336 result = -1;
1664     goto done;
1665 siliconforks 116 }
1666     JSParseNode * semi = root->pn_u.list.head;
1667    
1668     /* the list must be TOK_SEMI and it must contain only one element */
1669     if (semi->pn_type != TOK_SEMI || semi->pn_next != NULL) {
1670 siliconforks 336 result = -1;
1671     goto done;
1672 siliconforks 116 }
1673     JSParseNode * parenthesized = semi->pn_kid;
1674    
1675     /* this must be a parenthesized expression */
1676     if (parenthesized->pn_type != TOK_RP) {
1677 siliconforks 336 result = -1;
1678     goto done;
1679 siliconforks 116 }
1680     JSParseNode * object = parenthesized->pn_kid;
1681    
1682     /* this must be an object literal */
1683     if (object->pn_type != TOK_RC) {
1684 siliconforks 336 result = -1;
1685     goto done;
1686 siliconforks 116 }
1687    
1688     for (JSParseNode * p = object->pn_head; p != NULL; p = p->pn_next) {
1689     /* every element of this list must be TOK_COLON */
1690     if (p->pn_type != TOK_COLON) {
1691 siliconforks 336 result = -1;
1692     goto done;
1693 siliconforks 116 }
1694    
1695     /* the key must be a string representing the file */
1696     JSParseNode * key = p->pn_left;
1697     if (key->pn_type != TOK_STRING || ! ATOM_IS_STRING(key->pn_atom)) {
1698 siliconforks 336 result = -1;
1699     goto done;
1700 siliconforks 116 }
1701     char * id_bytes = JS_GetStringBytes(ATOM_TO_STRING(key->pn_atom));
1702    
1703     /* the value must be an object literal OR an array */
1704     JSParseNode * value = p->pn_right;
1705     if (! (value->pn_type == TOK_RC || value->pn_type == TOK_RB)) {
1706 siliconforks 336 result = -1;
1707     goto done;
1708 siliconforks 116 }
1709    
1710     JSParseNode * array = NULL;
1711     JSParseNode * source = NULL;
1712     if (value->pn_type == TOK_RB) {
1713     /* an array */
1714     array = value;
1715     }
1716     else if (value->pn_type == TOK_RC) {
1717     /* an object literal */
1718     if (value->pn_count != 2) {
1719 siliconforks 336 result = -1;
1720     goto done;
1721 siliconforks 116 }
1722     for (JSParseNode * element = value->pn_head; element != NULL; element = element->pn_next) {
1723     if (element->pn_type != TOK_COLON) {
1724 siliconforks 336 result = -1;
1725     goto done;
1726 siliconforks 116 }
1727     JSParseNode * left = element->pn_left;
1728     if (left->pn_type != TOK_STRING || ! ATOM_IS_STRING(left->pn_atom)) {
1729 siliconforks 336 result = -1;
1730     goto done;
1731 siliconforks 116 }
1732     const char * s = JS_GetStringBytes(ATOM_TO_STRING(left->pn_atom));
1733     if (strcmp(s, "coverage") == 0) {
1734     array = element->pn_right;
1735     if (array->pn_type != TOK_RB) {
1736 siliconforks 336 result = -1;
1737     goto done;
1738 siliconforks 116 }
1739     }
1740     else if (strcmp(s, "source") == 0) {
1741     source = element->pn_right;
1742 siliconforks 179 if (source->pn_type != TOK_RB) {
1743 siliconforks 336 result = -1;
1744     goto done;
1745 siliconforks 116 }
1746     }
1747     else {
1748 siliconforks 336 result = -1;
1749     goto done;
1750 siliconforks 116 }
1751     }
1752     }
1753     else {
1754 siliconforks 336 result = -1;
1755     goto done;
1756 siliconforks 116 }
1757    
1758     if (array == NULL) {
1759 siliconforks 336 result = -1;
1760     goto done;
1761 siliconforks 116 }
1762    
1763     /* look up the file in the coverage table */
1764     FileCoverage * file_coverage = JS_HashTableLookup(coverage->coverage_table, id_bytes);
1765     if (file_coverage == NULL) {
1766     /* not there: create a new one */
1767     char * id = xstrdup(id_bytes);
1768     file_coverage = xmalloc(sizeof(FileCoverage));
1769     file_coverage->id = id;
1770 siliconforks 179 file_coverage->num_coverage_lines = array->pn_count;
1771     file_coverage->coverage_lines = xnew(int, array->pn_count);
1772 siliconforks 245 file_coverage->source_lines = NULL;
1773 siliconforks 116
1774     /* set coverage for all lines */
1775     uint32 i = 0;
1776     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1777     if (element->pn_type == TOK_NUMBER) {
1778 siliconforks 179 file_coverage->coverage_lines[i] = (int) element->pn_dval;
1779 siliconforks 116 }
1780     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1781 siliconforks 179 file_coverage->coverage_lines[i] = -1;
1782 siliconforks 116 }
1783     else {
1784 siliconforks 336 result = -1;
1785     goto done;
1786 siliconforks 116 }
1787     }
1788     assert(i == array->pn_count);
1789    
1790     /* add to the hash table */
1791     JS_HashTableAdd(coverage->coverage_table, id, file_coverage);
1792     struct FileCoverageList * coverage_list = xmalloc(sizeof(struct FileCoverageList));
1793     coverage_list->file_coverage = file_coverage;
1794     coverage_list->next = coverage->coverage_list;
1795     coverage->coverage_list = coverage_list;
1796     }
1797     else {
1798     /* sanity check */
1799     assert(strcmp(file_coverage->id, id_bytes) == 0);
1800 siliconforks 179 if (file_coverage->num_coverage_lines != array->pn_count) {
1801 siliconforks 336 result = -2;
1802     goto done;
1803 siliconforks 116 }
1804    
1805     /* merge the coverage */
1806     uint32 i = 0;
1807     for (JSParseNode * element = array->pn_head; element != NULL; element = element->pn_next, i++) {
1808     if (element->pn_type == TOK_NUMBER) {
1809 siliconforks 179 if (file_coverage->coverage_lines[i] == -1) {
1810 siliconforks 336 result = -2;
1811     goto done;
1812 siliconforks 116 }
1813 siliconforks 179 file_coverage->coverage_lines[i] += (int) element->pn_dval;
1814 siliconforks 116 }
1815     else if (element->pn_type == TOK_PRIMARY && element->pn_op == JSOP_NULL) {
1816 siliconforks 179 if (file_coverage->coverage_lines[i] != -1) {
1817 siliconforks 336 result = -2;
1818     goto done;
1819 siliconforks 116 }
1820     }
1821     else {
1822 siliconforks 336 result = -1;
1823     goto done;
1824 siliconforks 116 }
1825     }
1826     assert(i == array->pn_count);
1827 siliconforks 245 }
1828 siliconforks 116
1829 siliconforks 245 /* if this JSON file has source, use it */
1830     if (file_coverage->source_lines == NULL && source != NULL) {
1831     file_coverage->num_source_lines = source->pn_count;
1832     file_coverage->source_lines = xnew(char *, source->pn_count);
1833     uint32 i = 0;
1834     for (JSParseNode * element = source->pn_head; element != NULL; element = element->pn_next, i++) {
1835     if (element->pn_type != TOK_STRING) {
1836 siliconforks 336 result = -1;
1837     goto done;
1838 siliconforks 179 }
1839 siliconforks 245 file_coverage->source_lines[i] = xstrdup(JS_GetStringBytes(ATOM_TO_STRING(element->pn_atom)));
1840 siliconforks 116 }
1841 siliconforks 245 assert(i == source->pn_count);
1842 siliconforks 116 }
1843     }
1844    
1845 siliconforks 336 done:
1846     js_FinishParseContext(context, &parse_context);
1847     return result;
1848 siliconforks 116 }

  ViewVC Help
Powered by ViewVC 1.1.24