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Bug 877639 - Switch some code in frontend/FoldConstants.cpp from getOp() to getKind(). r=jwalden.

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--HG--
extra : rebase_source : 97c448dc52660fc0257d81730b1c07eb2b89df40
This commit is contained in:
Jason Orendorff 2013-06-05 14:17:43 -05:00
parent 5e57980546
commit 35b0ae8709
1 changed files with 13 additions and 32 deletions
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45
js/src/frontend/FoldConstants.cpp
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@ -203,39 +203,20 @@ enum Truthiness { Truthy, Falsy, Unknown };
static Truthiness
Boolish(ParseNode *pn)
{
switch (pn->getOp()) {
case JSOP_DOUBLE:
switch (pn->getKind()) {
case PNK_NUMBER:
return (pn->pn_dval != 0 && !IsNaN(pn->pn_dval)) ? Truthy : Falsy;
case JSOP_STRING:
case PNK_STRING:
return (pn->pn_atom->length() > 0) ? Truthy : Falsy;
#if JS_HAS_GENERATOR_EXPRS
case JSOP_CALL:
{
/*
* A generator expression as an if or loop condition has no effects, it
* simply results in a truthy object reference. This condition folding
* is needed for the decompiler. See bug 442342 and bug 443074.
*/
if (pn->pn_count != 1)
return Unknown;
ParseNode *pn2 = pn->pn_head;
if (!pn2->isKind(PNK_FUNCTION))
return Unknown;
if (!(pn2->pn_funbox->inGenexpLambda))
return Unknown;
return Truthy;
}
#endif
case JSOP_DEFFUN:
case JSOP_LAMBDA:
case JSOP_TRUE:
case PNK_TRUE:
case PNK_FUNCTION:
case PNK_GENEXP:
return Truthy;
case JSOP_NULL:
case JSOP_FALSE:
case PNK_FALSE:
case PNK_NULL:
return Falsy;
default:
@ -671,19 +652,19 @@ FoldConstants<FullParseHandler>(JSContext *cx, ParseNode **pnp,
/* Operate on one numeric constant. */
d = pn1->pn_dval;
switch (pn->getOp()) {
case JSOP_BITNOT:
switch (pn->getKind()) {
case PNK_BITNOT:
d = ~ToInt32(d);
break;
case JSOP_NEG:
case PNK_NEG:
d = -d;
break;
case JSOP_POS:
case PNK_POS:
break;
case JSOP_NOT:
case PNK_NOT:
if (d == 0 || IsNaN(d)) {
pn->setKind(PNK_TRUE);
pn->setOp(JSOP_TRUE);