bool AliasManager::optimize(AnalysisResultPtr ar, MethodStatementPtr m) {
m_arp = ar;
m_variables = ar->getScope()->getVariables();
if (!m_variables->isPseudoMainTable()) {
m_variables->clearUsed();
}
if (ExpressionListPtr pPtr = m->getParams()) {
ExpressionList ¶ms = *pPtr;
for (int i = params.getCount(); i--; ) {
ParameterExpressionPtr p = spc(ParameterExpression, params[i]);
AliasInfo &ai = m_aliasInfo[p->getName()];
if (p->isRef()) {
ai.setIsRefTo();
}
}
}
collectAliasInfoRecur(m->getStmts());
for (AliasInfoMap::iterator it = m_aliasInfo.begin(),
end = m_aliasInfo.end(); it != end; ++it) {
if (m_variables->isGlobal(it->first) ||
m_variables->isStatic(it->first)) {
it->second.setIsGlobal();
}
}
canonicalizeRecur(m->getStmts());
return m_changed;
}
void FunctionScope::init(AnalysisResultConstPtr ar) {
m_dynamicInvoke = false;
if (isNamed("__autoload")) {
setVolatile();
}
// FileScope's flags are from parser, but VariableTable has more flags
// coming from type inference phase. So we are tranferring these flags
// just for better modularization between FileScope and VariableTable.
if (m_attribute & FileScope::ContainsDynamicVariable) {
m_variables->setAttribute(VariableTable::ContainsDynamicVariable);
}
if (m_attribute & FileScope::ContainsLDynamicVariable) {
m_variables->setAttribute(VariableTable::ContainsLDynamicVariable);
}
if (m_attribute & FileScope::ContainsExtract) {
m_variables->setAttribute(VariableTable::ContainsExtract);
}
if (m_attribute & FileScope::ContainsAssert) {
m_variables->setAttribute(VariableTable::ContainsAssert);
}
if (m_attribute & FileScope::ContainsCompact) {
m_variables->setAttribute(VariableTable::ContainsCompact);
}
if (m_attribute & FileScope::ContainsUnset) {
m_variables->setAttribute(VariableTable::ContainsUnset);
}
if (m_attribute & FileScope::ContainsGetDefinedVars) {
m_variables->setAttribute(VariableTable::ContainsGetDefinedVars);
}
if (m_stmt && Option::AllVolatile && !m_pseudoMain && !m_method) {
m_volatile = true;
}
if (!m_method && Option::DynamicInvokeFunctions.find(m_scopeName) !=
Option::DynamicInvokeFunctions.end()) {
setDynamicInvoke();
}
if (m_modifiers) {
m_virtual = m_modifiers->isAbstract();
}
if (m_stmt) {
MethodStatementPtr stmt = dynamic_pointer_cast<MethodStatement>(m_stmt);
StatementListPtr stmts = stmt->getStmts();
if (stmts) {
for (int i = 0; i < stmts->getCount(); i++) {
StatementPtr stmt = (*stmts)[i];
stmt->setFileLevel();
if (stmt->is(Statement::KindOfExpStatement)) {
ExpStatementPtr expStmt = dynamic_pointer_cast<ExpStatement>(stmt);
ExpressionPtr exp = expStmt->getExpression();
exp->setTopLevel();
}
}
}
}
}
bool FunctionScope::hasImpl() const {
if (!isUserFunction()) {
return !isAbstract();
}
if (m_stmt) {
MethodStatementPtr stmt = dynamic_pointer_cast<MethodStatement>(m_stmt);
return stmt->getStmts() != nullptr;
}
return false;
}
ExpressionPtr FunctionCall::inliner(AnalysisResultConstPtr ar,
ExpressionPtr obj, std::string localThis) {
FunctionScopePtr fs = getFunctionScope();
if (m_noInline || !fs || fs == m_funcScope || !m_funcScope->getStmt()) {
return ExpressionPtr();
}
BlockScope::s_jobStateMutex.lock();
if (m_funcScope->getMark() == BlockScope::MarkProcessing) {
fs->setForceRerun(true);
BlockScope::s_jobStateMutex.unlock();
return ExpressionPtr();
}
ReadLock lock(m_funcScope->getInlineMutex());
BlockScope::s_jobStateMutex.unlock();
if (!m_funcScope->getInlineAsExpr()) {
return ExpressionPtr();
}
if (m_funcScope->getInlineSameContext() &&
m_funcScope->getContainingClass() &&
m_funcScope->getContainingClass() != getClassScope()) {
/*
The function contains a context sensitive construct such as
call_user_func (context sensitive because it could call
array('parent', 'foo')) so its not safe to inline it
into a different context.
*/
return ExpressionPtr();
}
MethodStatementPtr m
(dynamic_pointer_cast<MethodStatement>(m_funcScope->getStmt()));
VariableTablePtr vt = fs->getVariables();
int nAct = m_params ? m_params->getCount() : 0;
int nMax = m_funcScope->getMaxParamCount();
if (nAct < m_funcScope->getMinParamCount() || !m->getStmts()) {
return ExpressionPtr();
}
InlineCloneInfo info(m_funcScope);
info.elist = ExpressionListPtr(new ExpressionList(
getScope(), getLocation(),
ExpressionList::ListKindWrapped));
std::ostringstream oss;
oss << fs->nextInlineIndex() << "_" << m_name << "_";
std::string prefix = oss.str();
if (obj) {
info.callWithThis = true;
if (!obj->isThis()) {
SimpleVariablePtr var
(new SimpleVariable(getScope(),
obj->getLocation(),
prefix + "this"));
var->updateSymbol(SimpleVariablePtr());
var->getSymbol()->setHidden();
var->getSymbol()->setUsed();
var->getSymbol()->setReferenced();
AssignmentExpressionPtr ae
(new AssignmentExpression(getScope(),
obj->getLocation(),
var, obj, false));
info.elist->addElement(ae);
info.sepm[var->getName()] = var;
info.localThis = var->getName();
}
} else {
if (m_classScope) {
if (!m_funcScope->isStatic()) {
ClassScopeRawPtr oCls = getOriginalClass();
FunctionScopeRawPtr oFunc = getOriginalFunction();
if (oCls && !oFunc->isStatic() &&
(oCls == m_classScope ||
oCls->derivesFrom(ar, m_className, true, false))) {
info.callWithThis = true;
info.localThis = localThis;
}
}
if (!isSelf() && !isParent() && !isStatic()) {
info.staticClass = m_className;
}
}
}
ExpressionListPtr plist = m->getParams();
int i;
for (i = 0; i < nMax || i < nAct; i++) {
ParameterExpressionPtr param
(i < nMax ?
dynamic_pointer_cast<ParameterExpression>((*plist)[i]) :
ParameterExpressionPtr());
ExpressionPtr arg = i < nAct ? (*m_params)[i] :
Clone(param->defaultValue(), getScope());
SimpleVariablePtr var
(new SimpleVariable(getScope(),
(i < nAct ? arg.get() : this)->getLocation(),
prefix + (param ?
param->getName() :
lexical_cast<string>(i))));
var->updateSymbol(SimpleVariablePtr());
var->getSymbol()->setHidden();
var->getSymbol()->setUsed();
var->getSymbol()->setReferenced();
bool ref =
(i < nMax && m_funcScope->isRefParam(i)) ||
arg->hasContext(RefParameter);
arg->clearContext(RefParameter);
AssignmentExpressionPtr ae
(new AssignmentExpression(getScope(),
arg->getLocation(),
var, arg, ref));
info.elist->addElement(ae);
if (i < nAct && (ref || !arg->isScalar())) {
info.sepm[var->getName()] = var;
}
}
if (cloneStmtsForInline(info, m->getStmts(), prefix, ar,
getFunctionScope()) <= 0) {
info.elist->addElement(makeConstant(ar, "null"));
}
if (info.sepm.size()) {
ExpressionListPtr unset_list
(new ExpressionList(getScope(), getLocation()));
for (StringToExpressionPtrMap::iterator it = info.sepm.begin(),
end = info.sepm.end(); it != end; ++it) {
ExpressionPtr var = it->second->clone();
var->clearContext((Context)(unsigned)-1);
unset_list->addElement(var);
}
ExpressionPtr unset(
new UnaryOpExpression(getScope(), getLocation(),
unset_list, T_UNSET, true));
i = info.elist->getCount();
ExpressionPtr ret = (*info.elist)[--i];
if (ret->isScalar()) {
info.elist->insertElement(unset, i);
} else {
ExpressionListPtr result_list
(new ExpressionList(getScope(), getLocation(),
ExpressionList::ListKindLeft));
if (ret->hasContext(LValue)) {
result_list->setContext(LValue);
result_list->setContext(ReturnContext);
}
result_list->addElement(ret);
result_list->addElement(unset);
(*info.elist)[i] = result_list;
}
}
recomputeEffects();
return replaceValue(info.elist);
}
void Dictionary::build(MethodStatementPtr m) {
if (StatementPtr s = m->getStmts()) {
build(s);
}
}
void FunctionScope::init(AnalysisResultConstPtr ar) {
m_dynamicInvoke = false;
bool canInline = true;
if (m_pseudoMain) {
canInline = false;
m_variables->forceVariants(ar, VariableTable::AnyVars);
setReturnType(ar, Type::Variant);
}
if (m_refReturn) {
m_returnType = Type::Variant;
}
if (!strcasecmp(m_name.c_str(), "__autoload")) {
setVolatile();
}
// FileScope's flags are from parser, but VariableTable has more flags
// coming from type inference phase. So we are tranferring these flags
// just for better modularization between FileScope and VariableTable.
if (m_attribute & FileScope::ContainsDynamicVariable) {
m_variables->setAttribute(VariableTable::ContainsDynamicVariable);
}
if (m_attribute & FileScope::ContainsLDynamicVariable) {
m_variables->setAttribute(VariableTable::ContainsLDynamicVariable);
}
if (m_attribute & FileScope::ContainsExtract) {
m_variables->setAttribute(VariableTable::ContainsExtract);
}
if (m_attribute & FileScope::ContainsAssert) {
m_variables->setAttribute(VariableTable::ContainsAssert);
}
if (m_attribute & FileScope::ContainsCompact) {
m_variables->setAttribute(VariableTable::ContainsCompact);
}
if (m_attribute & FileScope::ContainsUnset) {
m_variables->setAttribute(VariableTable::ContainsUnset);
}
if (m_attribute & FileScope::ContainsGetDefinedVars) {
m_variables->setAttribute(VariableTable::ContainsGetDefinedVars);
}
if (m_stmt && Option::AllVolatile && !m_pseudoMain && !m_method) {
m_volatile = true;
}
m_dynamic = Option::IsDynamicFunction(m_method, m_name) ||
Option::EnableEval == Option::FullEval || Option::AllDynamic;
if (!m_method && Option::DynamicInvokeFunctions.find(m_name) !=
Option::DynamicInvokeFunctions.end()) {
setDynamicInvoke();
}
if (m_modifiers) {
m_virtual = m_modifiers->isAbstract();
}
if (m_stmt) {
MethodStatementPtr stmt = dynamic_pointer_cast<MethodStatement>(m_stmt);
StatementListPtr stmts = stmt->getStmts();
if (stmts) {
if (stmts->getRecursiveCount() > Option::InlineFunctionThreshold)
canInline = false;
for (int i = 0; i < stmts->getCount(); i++) {
StatementPtr stmt = (*stmts)[i];
stmt->setFileLevel();
if (stmt->is(Statement::KindOfExpStatement)) {
ExpStatementPtr expStmt = dynamic_pointer_cast<ExpStatement>(stmt);
ExpressionPtr exp = expStmt->getExpression();
exp->setTopLevel();
}
}
}
} else {
canInline = false;
}
m_inlineable = canInline;
}
FunctionScope::FunctionScope(AnalysisResultPtr ar, bool method,
const std::string &name, StatementPtr stmt,
bool reference, int minParam, int maxParam,
ModifierExpressionPtr modifiers,
int attribute, const std::string &docComment,
FileScopePtr file,
bool inPseudoMain /* = false */)
: BlockScope(name, docComment, stmt, BlockScope::FunctionScope),
m_method(method), m_file(file), m_minParam(0), m_maxParam(0),
m_attribute(attribute), m_refReturn(reference), m_modifiers(modifiers),
m_virtual(false), m_overriding(false), m_redeclaring(-1),
m_volatile(false), m_ignored(false), m_pseudoMain(inPseudoMain),
m_magicMethod(false), m_system(false), m_inlineable(false), m_sep(false),
m_containsThis(false), m_staticMethodAutoFixed(false),
m_callTempCountMax(0), m_callTempCountCurrent(0) {
bool canInline = true;
if (inPseudoMain) {
canInline = false;
m_variables->forceVariants(ar);
setReturnType(ar, Type::Variant);
}
setParamCounts(ar, minParam, maxParam);
if (m_refReturn) {
m_returnType = Type::Variant;
}
// FileScope's flags are from parser, but VariableTable has more flags
// coming from type inference phase. So we are tranferring these two
// flags just for better modularization between FileScope and VariableTable.
if (m_attribute & FileScope::ContainsDynamicVariable) {
m_variables->setAttribute(VariableTable::ContainsDynamicVariable);
}
if (m_attribute & FileScope::ContainsLDynamicVariable) {
m_variables->setAttribute(VariableTable::ContainsLDynamicVariable);
}
if (m_attribute & FileScope::ContainsExtract) {
m_variables->setAttribute(VariableTable::ContainsExtract);
}
if (m_attribute & FileScope::ContainsCompact) {
m_variables->setAttribute(VariableTable::ContainsCompact);
}
if (m_attribute & FileScope::ContainsUnset) {
m_variables->setAttribute(VariableTable::ContainsUnset);
}
if (m_attribute & FileScope::ContainsGetDefinedVars) {
m_variables->setAttribute(VariableTable::ContainsGetDefinedVars);
}
if (m_stmt && Option::AllVolatile) {
m_volatile = true;
}
m_dynamic = Option::IsDynamicFunction(method, m_name) ||
Option::EnableEval == Option::FullEval;
if (modifiers) {
m_virtual = modifiers->isAbstract();
}
if (m_stmt) {
MethodStatementPtr stmt = dynamic_pointer_cast<MethodStatement>(m_stmt);
StatementListPtr stmts = stmt->getStmts();
if (stmts) {
if (stmts->getRecursiveCount() > Option::InlineFunctionThreshold)
canInline = false;
for (int i = 0; i < stmts->getCount(); i++) {
StatementPtr stmt = (*stmts)[i];
stmt->setFileLevel();
if (stmt->is(Statement::KindOfExpStatement)) {
ExpStatementPtr expStmt = dynamic_pointer_cast<ExpStatement>(stmt);
ExpressionPtr exp = expStmt->getExpression();
exp->setTopLevel();
}
}
}
} else {
canInline = false;
}
m_inlineable = canInline;
}