bool AssignmentExpression::preOutputCPP(CodeGenerator &cg, AnalysisResultPtr ar,
int state) {
if (m_variable->is(Expression::KindOfArrayElementExpression)) {
ExpressionPtr exp = m_value;
ExpressionPtr vv(
static_pointer_cast<ArrayElementExpression>(m_variable)->getVariable());
if ((vv->is(KindOfArrayElementExpression) ||
vv->is(KindOfObjectPropertyExpression)) &&
(vv->getContainedEffects() && (CreateEffect|AccessorEffect))) {
/*
We are in a case such as
$a->b['c'] = ...;
$a['b']['c'] = ...;
Where evaluating m_variable may modify $a. Unless we can prove that
the rhs is not referring to the same thing as $a, we must generate
a temporary for it (note that we could do better with the following
checks).
*/
if (!(m_ref && exp->isRefable()) &&
!exp->isTemporary() && !exp->isScalar() &&
exp->getActualType() && !exp->getActualType()->isPrimitive() &&
exp->getActualType()->getKindOf() != Type::KindOfString) {
state |= Expression::StashAll;
}
}
}
return Expression::preOutputCPP(cg, ar, state);
}
static void wrapValue(CodeGenerator &cg, AnalysisResultPtr ar,
ExpressionPtr exp, bool ref, bool array, bool varnr) {
bool close = false;
if (ref) {
cg_printf("ref(");
close = true;
} else if (array && !exp->hasCPPTemp() &&
!exp->isTemporary() && !exp->isScalar() &&
exp->getActualType() && !exp->getActualType()->isPrimitive() &&
exp->getActualType()->getKindOf() != Type::KindOfString) {
cg_printf("wrap_variant(");
close = true;
} else if (varnr && exp->getCPPType()->isExactType()) {
bool isScalar = exp->isScalar();
if (!isScalar || !Option::UseScalarVariant) {
cg_printf("VarNR(");
close = true;
} else if (isScalar) {
ASSERT(!cg.hasScalarVariant());
cg.setScalarVariant();
}
}
exp->outputCPP(cg, ar);
cg.clearScalarVariant();
if (close) cg_printf(")");
}
bool AssignmentExpression::preOutputCPP(CodeGenerator &cg, AnalysisResultPtr ar,
int state) {
if (m_variable->is(Expression::KindOfArrayElementExpression)) {
ExpressionPtr exp = m_value;
if (!(m_ref && exp->isRefable()) &&
!exp->isTemporary() && !exp->isScalar() &&
exp->getActualType() && !exp->getActualType()->isPrimitive() &&
exp->getActualType()->getKindOf() != Type::KindOfString) {
state |= Expression::StashAll;
}
}
return Expression::preOutputCPP(cg, ar, state);
}
static void wrapValue(CodeGenerator &cg, AnalysisResultPtr ar,
ExpressionPtr exp, bool ref, bool array) {
bool close = false;
if (ref) {
cg_printf("ref(");
close = true;
} else if (array && !exp->hasCPPTemp() &&
!exp->isTemporary() && !exp->isScalar() &&
exp->getActualType() && !exp->getActualType()->isPrimitive() &&
exp->getActualType()->getKindOf() != Type::KindOfString) {
cg_printf("wrap_variant(");
close = true;
}
exp->outputCPP(cg, ar);
if (close) cg_printf(")");
}
bool ExpressionList::hasNonArrayCreateValue(
bool arrayElements /* = true */, unsigned int start /* = 0 */) const {
for (unsigned int i = start; i < m_exps.size(); i++) {
ExpressionPtr value = m_exps[i];
if (arrayElements) {
ArrayPairExpressionPtr ap =
dynamic_pointer_cast<ArrayPairExpression>(m_exps[i]);
value = ap->getValue();
}
ASSERT(value);
if (value->hasContext(RefValue) ||
(value->hasEffect() && !value->isTemporary())) {
return true;
}
}
return false;
}
bool ExpressionList::preOutputCPP(CodeGenerator &cg, AnalysisResultPtr ar,
int state) {
if (m_kind == ListKindParam && !m_arrayElements) {
return Expression::preOutputCPP(cg, ar, state|StashKidVars);
}
unsigned n = m_exps.size();
bool inExpression = cg.inExpression();
if (!inExpression && (state & FixOrder)) {
return true;
}
cg.setInExpression(false);
bool ret = false;
if (m_arrayElements) {
/*
* would like to do:
* ret = Expression::preOutputCPP(cg, ar, state);
* but icc has problems with the generated code.
*/
ret = hasEffect();
} else if (n > 1 && m_kind == ListKindLeft) {
ret = true;
} else {
for (unsigned int i = 0; i < n; i++) {
if (m_exps[i]->preOutputCPP(cg, ar, 0)) {
ret = true;
break;
}
}
if (!ret) {
ExpressionPtr e = m_exps[n - 1];
if (hasContext(LValue) && !hasAnyContext(RefValue|InvokeArgument) &&
!(e->hasContext(LValue) &&
!e->hasAnyContext(RefValue|InvokeArgument))) {
ret = true;
} else if (hasContext(RefValue) &&
!e->hasAllContext(LValue|ReturnContext) &&
!e->hasContext(RefValue)) {
ret = true;
}
}
}
if (!inExpression) return ret;
cg.setInExpression(true);
if (!ret) {
if (state & FixOrder) {
preOutputStash(cg, ar, state);
return true;
}
return false;
}
cg.wrapExpressionBegin();
if (m_arrayElements) {
setCPPTemp(genCPPTemp(cg, ar));
outputCPPInternal(cg, ar, true, true);
} else {
unsigned ix = isUnused() ? (unsigned)-1 :
m_kind == ListKindLeft ? 0 : n - 1;
for (unsigned int i = 0; i < n; i++) {
ExpressionPtr e = m_exps[i];
e->preOutputCPP(cg, ar, i == ix ? state : 0);
if (i != ix) {
if (e->outputCPPUnneeded(cg, ar)) {
cg_printf(";\n");
}
e->setCPPTemp("/**/");
continue;
}
/*
We inlined a by-value function into the rhs of a by-ref assignment.
*/
bool noRef = hasContext(RefValue) &&
!e->hasAllContext(LValue|ReturnContext) &&
!e->hasContext(RefValue) &&
!e->isTemporary() &&
Type::IsMappedToVariant(e->getActualType());
/*
If we need a non-const reference, but the expression is
going to generate a const reference, fix it
*/
bool lvSwitch =
hasContext(LValue) && !hasAnyContext(RefValue|InvokeArgument) &&
!(e->hasContext(LValue) &&
!e->hasAnyContext(RefValue|InvokeArgument));
if (e->hasAllContext(LValue|ReturnContext) && i + 1 == n) {
e->clearContext(ReturnContext);
}
if (noRef || lvSwitch || (!i && n > 1)) {
e->Expression::preOutputStash(cg, ar, state | FixOrder | StashAll);
if (!(state & FixOrder)) {
cg_printf("id(%s);\n", e->cppTemp().c_str());
}
}
if (e->hasCPPTemp() &&
Type::SameType(e->getGenType(), getGenType())) {
string t = e->cppTemp();
if (noRef) {
cg_printf("CVarRef %s_nr = wrap_variant(%s);\n",
t.c_str(), t.c_str());
t += "_nr";
}
if (lvSwitch) {
cg_printf("Variant &%s_lv = const_cast<Variant&>(%s);\n",
t.c_str(), t.c_str());
t += "_lv";
}
setCPPTemp(t);
}
}
}
return true;
}
