void FunctionCall::markRefParams(FunctionScopePtr func,
const std::string &name,
bool canInvokeFewArgs) {
ExpressionList ¶ms = *m_params;
if (func) {
int mpc = func->getMaxParamCount();
for (int i = params.getCount(); i--; ) {
ExpressionPtr p = params[i];
if (i < mpc ? func->isRefParam(i) :
func->isReferenceVariableArgument()) {
p->setContext(Expression::RefValue);
}
}
} else if (!m_name.empty()) {
FunctionScope::RefParamInfoPtr info =
FunctionScope::GetRefParamInfo(m_name);
if (info) {
for (int i = params.getCount(); i--; ) {
if (info->isRefParam(i)) {
m_params->markParam(i, canInvokeFewArgs);
}
}
}
// If we cannot find information of the so-named function, it might not
// exist, or it might go through __call(), either of which cannot have
// reference parameters.
} else {
for (int i = params.getCount(); i--; ) {
m_params->markParam(i, canInvokeFewArgs);
}
}
}
void ObjectMethodExpression::outputCPPImpl(CodeGenerator &cg,
AnalysisResultPtr ar) {
bool fewParams = canInvokeFewArgs();
if (!m_name.empty() && m_valid && m_object->getType()->isSpecificObject()) {
// Static method call
outputCPPObjectCall(cg, ar);
cg_printf("%s%s(", m_funcScope ?
m_funcScope->getPrefix(m_params) : Option::MethodPrefix,
m_name.c_str());
FunctionScope::OutputCPPArguments(m_params, m_funcScope, cg, ar,
m_extraArg, m_variableArgument,
m_argArrayId, m_argArrayHash,
m_argArrayIndex);
cg_printf(")");
} else {
cg_printf("(mcp%d.bindClass(info)->", m_ciTemp);
if (fewParams) {
cg_printf("getMethFewArgs())(mcp%d, ", m_ciTemp);
int pcount = m_params ? m_params->getCount() : 0;
if (pcount) {
cg_printf("%d, ", pcount);
ar->pushCallInfo(m_ciTemp);
FunctionScope::OutputCPPArguments(m_params, m_funcScope, cg, ar, 0,
false);
ar->popCallInfo();
} else {
cg_printf("0");
}
FunctionScope::RefParamInfoPtr info;
if (!m_name.empty()) {
info = FunctionScope::GetRefParamInfo(m_name);
}
for (int i = pcount; i < Option::InvokeFewArgsCount; ++i) {
if (info && !info->isRefParam(i)) {
cg_printf(", null_variant");
} else {
// It is not safe to use null_variant here, because
// throw_missing_arguments() might not throw at all.
cg_printf(", null");
}
}
cg_printf(")");
} else {
cg_printf("getMeth())(mcp%d, ", m_ciTemp);
if (m_params && m_params->getCount()) {
ar->pushCallInfo(m_ciTemp);
FunctionScope::OutputCPPArguments(m_params, m_funcScope, cg, ar, -1,
false);
ar->popCallInfo();
} else {
cg_printf("Array()");
}
cg_printf(")");
}
}
}
void ObjectMethodExpression::analyzeProgram(AnalysisResultPtr ar) {
m_params->analyzeProgram(ar);
m_object->analyzeProgram(ar);
m_nameExp->analyzeProgram(ar);
if (ar->getPhase() == AnalysisResult::AnalyzeAll) {
FunctionScopePtr func = m_funcScope;
if (!func && m_object->isThis() && !m_name.empty()) {
ClassScopePtr cls = ar->getClassScope();
if (cls) {
m_classScope = cls;
m_funcScope = func = cls->findFunction(ar, m_name, true, true);
if (!func) {
cls->addMissingMethod(m_name);
}
}
}
ExpressionList ¶ms = *m_params;
if (func) {
int mpc = func->getMaxParamCount();
for (int i = params.getCount(); i--; ) {
ExpressionPtr p = params[i];
if (i < mpc ? func->isRefParam(i) :
func->isReferenceVariableArgument()) {
p->setContext(Expression::RefValue);
}
}
} else if (!m_name.empty()) {
FunctionScope::RefParamInfoPtr info =
FunctionScope::GetRefParamInfo(m_name);
if (info) {
for (int i = params.getCount(); i--; ) {
if (info->isRefParam(i)) {
m_params->markParam(i, canInvokeFewArgs());
}
}
}
// If we cannot find information of the so-named function, it might not
// exist, or it might go through __call(), either of which cannot have
// reference parameters.
} else {
for (int i = params.getCount(); i--; ) {
m_params->markParam(i, canInvokeFewArgs());
}
}
}
}
void ObjectMethodExpression::setInvokeParams(AnalysisResultPtr ar) {
FunctionScope::RefParamInfoPtr info = FunctionScope::GetRefParamInfo(m_name);
if (info || m_name.empty()) {
for (int i = m_params->getCount(); i--; ) {
if (!info || info->isRefParam(i)) {
m_params->markParam(i, canInvokeFewArgs());
}
}
}
// If we cannot find information of the so-named function, it might not
// exist, or it might go through __call(), either of which cannot have
// reference parameters.
for (int i = 0; i < m_params->getCount(); i++) {
(*m_params)[i]->inferAndCheck(ar, Type::Variant, false);
}
m_params->resetOutputCount();
}
TypePtr SimpleFunctionCall::inferAndCheck(AnalysisResultPtr ar, TypePtr type,
bool coerce) {
reset();
ConstructPtr self = shared_from_this();
// handling define("CONSTANT", ...);
if (m_className.empty()) {
if (m_type == DefineFunction && m_params && m_params->getCount() >= 2) {
ScalarExpressionPtr name =
dynamic_pointer_cast<ScalarExpression>((*m_params)[0]);
string varName;
if (name) {
varName = name->getIdentifier();
if (!varName.empty()) {
ExpressionPtr value = (*m_params)[1];
TypePtr varType = value->inferAndCheck(ar, NEW_TYPE(Some), false);
ar->getDependencyGraph()->
addParent(DependencyGraph::KindOfConstant,
ar->getName(), varName, self);
ConstantTablePtr constants =
ar->findConstantDeclarer(varName)->getConstants();
if (constants != ar->getConstants()) {
if (value && !value->isScalar()) {
constants->setDynamic(ar, varName);
varType = Type::Variant;
}
if (constants->isDynamic(varName)) {
m_dynamicConstant = true;
ar->getScope()->getVariables()->
setAttribute(VariableTable::NeedGlobalPointer);
} else {
constants->setType(ar, varName, varType, true);
}
// in case the old 'value' has been optimized
constants->setValue(ar, varName, value);
}
return checkTypesImpl(ar, type, Type::Boolean, coerce);
}
}
if (varName.empty() && ar->isFirstPass()) {
ar->getCodeError()->record(self, CodeError::BadDefine, self);
}
} else if (m_type == ExtractFunction) {
ar->getScope()->getVariables()->forceVariants(ar);
}
}
FunctionScopePtr func;
// avoid raising both MissingObjectContext and UnknownFunction
bool errorFlagged = false;
if (m_className.empty()) {
func = ar->findFunction(m_name);
} else {
ClassScopePtr cls = ar->resolveClass(m_className);
if (cls && cls->isVolatile()) {
ar->getScope()->getVariables()
->setAttribute(VariableTable::NeedGlobalPointer);
}
if (!cls || cls->isRedeclaring()) {
if (cls) {
m_redeclaredClass = true;
}
if (!cls && ar->isFirstPass()) {
ar->getCodeError()->record(self, CodeError::UnknownClass, self);
}
if (m_params) {
m_params->inferAndCheck(ar, NEW_TYPE(Some), false);
}
return checkTypesImpl(ar, type, Type::Variant, coerce);
}
m_derivedFromRedeclaring = cls->derivesFromRedeclaring();
m_validClass = true;
if (m_name == "__construct") {
// if the class is known, php will try to identify class-name ctor
func = cls->findConstructor(ar, true);
}
else {
func = cls->findFunction(ar, m_name, true, true);
}
if (func && !func->isStatic()) {
ClassScopePtr clsThis = ar->getClassScope();
FunctionScopePtr funcThis = ar->getFunctionScope();
if (!clsThis ||
(clsThis->getName() != m_className &&
!clsThis->derivesFrom(ar, m_className)) ||
funcThis->isStatic()) {
// set the method static to avoid "unknown method" runtime exception
if (Option::StaticMethodAutoFix && !func->containsThis()) {
func->setStatic();
}
if (ar->isFirstPass()) {
ar->getCodeError()->record(self, CodeError::MissingObjectContext,
self);
errorFlagged = true;
}
func.reset();
}
}
}
if (!func || func->isRedeclaring()) {
if (func) {
m_redeclared = true;
ar->getScope()->getVariables()->
setAttribute(VariableTable::NeedGlobalPointer);
}
if (!func && !errorFlagged && ar->isFirstPass()) {
ar->getCodeError()->record(self, CodeError::UnknownFunction, self);
}
if (m_params) {
if (func) {
FunctionScope::RefParamInfoPtr info =
FunctionScope::GetRefParamInfo(m_name);
ASSERT(info);
for (int i = m_params->getCount(); i--; ) {
if (info->isRefParam(i)) {
m_params->markParam(i, canInvokeFewArgs());
}
}
}
m_params->inferAndCheck(ar, NEW_TYPE(Some), false);
}
return checkTypesImpl(ar, type, Type::Variant, coerce);
}
m_builtinFunction = !func->isUserFunction();
if (m_redeclared) {
if (m_params) {
m_params->inferAndCheck(ar, NEW_TYPE(Some), false);
}
return checkTypesImpl(ar, type, type, coerce);
}
CHECK_HOOK(beforeSimpleFunctionCallCheck);
m_valid = true;
type = checkParamsAndReturn(ar, type, coerce, func);
if (!m_valid && m_params) {
m_params->markParams(false);
}
CHECK_HOOK(afterSimpleFunctionCallCheck);
return type;
}
void SimpleFunctionCall::analyzeProgram(AnalysisResultPtr ar) {
if (m_className.empty()) {
addUserFunction(ar, m_name);
} else if (m_className != "parent") {
addUserClass(ar, m_className);
} else {
m_parentClass = true;
}
if (ar->getPhase() == AnalysisResult::AnalyzeInclude) {
CHECK_HOOK(onSimpleFunctionCallAnalyzeInclude);
ConstructPtr self = shared_from_this();
// We need to know the name of the constant so that we can associate it
// with this file before we do type inference.
if (m_className.empty() && m_type == DefineFunction) {
ScalarExpressionPtr name =
dynamic_pointer_cast<ScalarExpression>((*m_params)[0]);
string varName;
if (name) {
varName = name->getIdentifier();
if (!varName.empty()) {
ar->getFileScope()->declareConstant(ar, varName);
}
}
// handling define("CONSTANT", ...);
if (m_params && m_params->getCount() >= 2) {
ScalarExpressionPtr name =
dynamic_pointer_cast<ScalarExpression>((*m_params)[0]);
string varName;
if (name) {
varName = name->getIdentifier();
if (!varName.empty()) {
ExpressionPtr value = (*m_params)[1];
ConstantTablePtr constants =
ar->findConstantDeclarer(varName)->getConstants();
if (constants != ar->getConstants()) {
constants->add(varName, NEW_TYPE(Some), value, ar, self);
if (name->hasHphpNote("Dynamic")) {
constants->setDynamic(ar, varName);
}
}
}
}
}
}
if (m_type == UnserializeFunction) {
ar->forceClassVariants();
}
}
if (ar->getPhase() == AnalysisResult::AnalyzeAll) {
// Look up the corresponding FunctionScope and ClassScope
// for this function call
{
FunctionScopePtr func;
ClassScopePtr cls;
if (m_className.empty()) {
func = ar->findFunction(m_name);
} else {
cls = ar->resolveClass(m_className);
if (cls) {
if (m_name == "__construct") {
func = cls->findConstructor(ar, true);
} else {
func = cls->findFunction(ar, m_name, true, true);
}
}
}
if (func && !func->isRedeclaring()) {
if (m_funcScope != func) {
m_funcScope = func;
Construct::recomputeEffects();
}
}
if (cls && !cls->isRedeclaring())
m_classScope = cls;
}
// check for dynamic constant and volatile function/class
if (m_className.empty() &&
(m_type == DefinedFunction ||
m_type == FunctionExistsFunction ||
m_type == ClassExistsFunction ||
m_type == InterfaceExistsFunction) &&
m_params && m_params->getCount() >= 1) {
ExpressionPtr value = (*m_params)[0];
if (value->isScalar()) {
ScalarExpressionPtr name =
dynamic_pointer_cast<ScalarExpression>(value);
if (name && name->isLiteralString()) {
string symbol = name->getLiteralString();
switch (m_type) {
case DefinedFunction: {
ConstantTablePtr constants = ar->getConstants();
if (!constants->isPresent(symbol)) {
// user constant
BlockScopePtr block = ar->findConstantDeclarer(symbol);
if (block) { // found the constant
constants = block->getConstants();
// set to be dynamic
constants->setDynamic(ar, symbol);
}
}
break;
}
case FunctionExistsFunction: {
FunctionScopePtr func = ar->findFunction(Util::toLower(symbol));
if (func && func->isUserFunction()) {
func->setVolatile();
}
break;
}
case InterfaceExistsFunction:
case ClassExistsFunction: {
ClassScopePtr cls = ar->findClass(Util::toLower(symbol));
if (cls && cls->isUserClass()) {
cls->setVolatile();
}
break;
}
default:
ASSERT(false);
}
}
}
}
}
if (m_params) {
if (ar->getPhase() == AnalysisResult::AnalyzeAll) {
if (m_funcScope) {
ExpressionList ¶ms = *m_params;
int mpc = m_funcScope->getMaxParamCount();
for (int i = params.getCount(); i--; ) {
ExpressionPtr p = params[i];
if (i < mpc ? m_funcScope->isRefParam(i) :
m_funcScope->isReferenceVariableArgument()) {
p->setContext(Expression::RefValue);
} else if (!(p->getContext() & Expression::RefParameter)) {
p->clearContext(Expression::RefValue);
}
}
} else {
FunctionScopePtr func = ar->findFunction(m_name);
if (func && func->isRedeclaring()) {
FunctionScope::RefParamInfoPtr info =
FunctionScope::GetRefParamInfo(m_name);
if (info) {
for (int i = m_params->getCount(); i--; ) {
if (info->isRefParam(i)) {
m_params->markParam(i, canInvokeFewArgs());
}
}
}
} else {
m_params->markParams(false);
}
}
}
m_params->analyzeProgram(ar);
}
}