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bug 486139 - annotating destructuring JSOP_DUP for the decompiler. r=brendan

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This commit is contained in:
Igor Bukanov
2009-04-02 16:31:54 +02:00
parent 6066472d51
commit 0b72b20eb1
5 changed files with 19 additions and 19 deletions
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15
js/src/jsopcode.cpp
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@@ -1624,13 +1624,20 @@ DecompileDestructuring(SprintStack *ss, jsbytecode *pc, jsbytecode *endpc)
break;
/*
* Check for SRC_DESTRUCT on this JSOP_DUP, which would mean another
* destructuring initialiser abuts this one, and we should stop. This
* happens with source of the form '[a] = [b] = c'.
* We should stop if JSOP_DUP is either without notes or its note is
* not SRC_CONTINUE. The former happens when JSOP_DUP duplicates the
* last destructuring reference implementing an op= assignment like in
* '([t] = z).y += x'. In the latter case the note is SRC_DESTRUCT and
* means another destructuring initialiser abuts this one like in
* '[a] = [b] = c'.
*/
sn = js_GetSrcNote(jp->script, pc);
if (sn && SN_TYPE(sn) == SRC_DESTRUCT)
if (!sn)
break;
if (SN_TYPE(sn) != SRC_CONTINUE) {
LOCAL_ASSERT(SN_TYPE(sn) == SRC_DESTRUCT);
break;
}
if (!hole && SprintPut(&ss->sprinter, ", ", 2) < 0)
return NULL;