void ParameterExpression::outputCPPImpl(CodeGenerator &cg,
AnalysisResultPtr ar) {
FunctionScopePtr func = getFunctionScope();
VariableTablePtr variables = func->getVariables();
Symbol *sym = variables->getSymbol(m_name);
assert(sym && sym->isParameter());
bool inHeader = cg.isFileOrClassHeader();
cg.setFileOrClassHeader(true);
CodeGenerator::Context context = cg.getContext();
bool typedWrapper = (context == CodeGenerator::CppTypedParamsWrapperImpl ||
context == CodeGenerator::CppTypedParamsWrapperDecl);
TypePtr paramType =
typedWrapper && func->getParamTypeSpec(sym->getParameterIndex()) ?
Type::Variant : func->getParamType(sym->getParameterIndex());
bool wrapper = typedWrapper ||
context == CodeGenerator::CppFunctionWrapperImpl ||
context == CodeGenerator::CppFunctionWrapperDecl;
bool isCVarRef = false;
const char *prefix = "";
if (m_ref) {
cg_printf("VRefParam");
if (!wrapper) {
prefix = "r";
}
} else if (wrapper ||
(!variables->isLvalParam(m_name) &&
!variables->getAttribute(VariableTable::ContainsDynamicVariable) &&
!variables->getAttribute(VariableTable::ContainsExtract))) {
if (paramType->is(Type::KindOfVariant) ||
paramType->is(Type::KindOfSome)) {
cg_printf("CVarRef");
isCVarRef = true;
}
else if (paramType->is(Type::KindOfArray)) cg_printf("CArrRef");
else if (paramType->is(Type::KindOfString)) cg_printf("CStrRef");
else paramType->outputCPPDecl(cg, ar, getScope());
} else {
paramType->outputCPPDecl(cg, ar, getScope());
}
cg_printf(" %s%s%s",
prefix, Option::VariablePrefix,
CodeGenerator::FormatLabel(m_name).c_str());
if (m_defaultValue && sym->getParameterIndex() >= func->getMinParamCount()) {
bool comment = context == CodeGenerator::CppTypedParamsWrapperImpl ||
context == CodeGenerator::CppFunctionWrapperImpl ||
context == CodeGenerator::CppImplementation ||
(context == CodeGenerator::CppDeclaration && func->isInlined());
if (comment) {
cg_printf(" // ");
}
cg_printf(" = ");
ConstantExpressionPtr con =
dynamic_pointer_cast<ConstantExpression>(m_defaultValue);
bool done = false;
if (con && con->isNull()) {
done = true;
if (isCVarRef) {
cg_printf("null_variant");
} else if (paramType->is(Type::KindOfVariant) ||
paramType->is(Type::KindOfSome)) {
cg_printf("null");
} else if (paramType->is(Type::KindOfObject)) {
cg_printf("Object()");
} else if (paramType->is(Type::KindOfArray)) {
cg_printf("Array()");
} else if (paramType->is(Type::KindOfString)) {
cg_printf("String()");
} else {
done = false;
}
}
if (!done) {
if (comment) {
cg.setContext(CodeGenerator::CppParameterDefaultValueImpl);
} else {
cg.setContext(CodeGenerator::CppParameterDefaultValueDecl);
}
bool isScalar = m_defaultValue->isScalar();
if (isCVarRef && isScalar) {
ASSERT(!cg.hasScalarVariant());
cg.setScalarVariant();
}
m_defaultValue->outputCPP(cg, ar);
if (isCVarRef && isScalar) cg.clearScalarVariant();
ASSERT(!cg.hasScalarVariant());
cg.setContext(context);
}
if (comment) {
cg_printf("\n");
}
}
cg.setFileOrClassHeader(inHeader);
}
TypePtr SimpleVariable::inferAndCheck(AnalysisResultPtr ar, TypePtr type,
bool coerce) {
TypePtr ret;
ConstructPtr construct = shared_from_this();
BlockScopePtr scope = getScope();
VariableTablePtr variables = scope->getVariables();
// check function parameter that can occur in lval context
if (m_sym && m_sym->isParameter() &&
m_context & (LValue | RefValue | DeepReference |
UnsetContext | InvokeArgument | OprLValue | DeepOprLValue)) {
m_sym->setLvalParam();
}
if (m_this) {
ClassScopePtr cls = getOriginalClass();
if (!hasContext(ObjectContext) && cls->derivedByDynamic()) {
ret = Type::Object;
} else {
ret = Type::CreateObjectType(cls->getName());
}
if (!hasContext(ObjectContext) &&
variables->getAttribute(VariableTable::ContainsDynamicVariable)) {
ret = variables->add(m_sym, ret, true, ar,
construct, scope->getModifiers());
}
} else if ((m_context & (LValue|Declaration)) &&
!(m_context & (ObjectContext|RefValue))) {
if (m_globals) {
ret = Type::Variant;
} else if (m_superGlobal) {
ret = m_superGlobalType;
} else if (m_superGlobalType) { // For system
ret = variables->add(m_sym, m_superGlobalType,
((m_context & Declaration) != Declaration), ar,
construct, scope->getModifiers());
} else {
ret = variables->add(m_sym, type,
((m_context & Declaration) != Declaration), ar,
construct, scope->getModifiers());
}
} else {
if (m_superGlobalType) {
ret = m_superGlobalType;
} else if (m_globals) {
ret = Type::Array;
} else if (scope->is(BlockScope::ClassScope)) {
// ClassVariable expression will come to this block of code
ret = getClassScope()->checkProperty(m_sym, type, true, ar);
} else {
TypePtr tmpType = type;
if (m_context & RefValue) {
tmpType = Type::Variant;
coerce = true;
}
int p;
ret = variables->checkVariable(m_sym, tmpType, coerce,
ar, construct, p);
}
}
TypePtr actual = propagateTypes(ar, ret);
setTypes(ar, actual, type);
if (Type::SameType(actual, ret)) {
m_implementedType.reset();
} else {
m_implementedType = ret;
}
return actual;
}
void ParameterExpression::outputCPPImpl(CodeGenerator &cg,
AnalysisResultPtr ar) {
FunctionScopePtr func = getFunctionScope();
VariableTablePtr variables = func->getVariables();
Symbol *sym = variables->getSymbol(m_name);
assert(sym && sym->isParameter());
CodeGenerator::Context context = cg.getContext();
bool typedWrapper = (context == CodeGenerator::CppTypedParamsWrapperImpl ||
context == CodeGenerator::CppTypedParamsWrapperDecl);
TypePtr paramType =
typedWrapper && func->getParamTypeSpec(sym->getParameterIndex()) ?
Type::Variant : func->getParamType(sym->getParameterIndex());
bool isCVarRef = false;
if (cg.getContext() == CodeGenerator::CppStaticMethodWrapper ||
typedWrapper ||
(!variables->isLvalParam(m_name) &&
!variables->getAttribute(VariableTable::ContainsDynamicVariable) &&
!variables->getAttribute(VariableTable::ContainsExtract) &&
!m_ref)) {
if (paramType->is(Type::KindOfVariant) ||
paramType->is(Type::KindOfSome)) {
cg_printf("CVarRef");
isCVarRef = true;
}
else if (paramType->is(Type::KindOfArray)) cg_printf("CArrRef");
else if (paramType->is(Type::KindOfString)) cg_printf("CStrRef");
else paramType->outputCPPDecl(cg, ar, getScope());
} else {
paramType->outputCPPDecl(cg, ar, getScope());
}
cg_printf(" %s%s", Option::VariablePrefix, m_name.c_str());
if (m_defaultValue && sym->getParameterIndex() >= func->getMinParamCount()) {
bool comment = context == CodeGenerator::CppTypedParamsWrapperImpl ||
context == CodeGenerator::CppImplementation ||
(context == CodeGenerator::CppDeclaration && func->isInlined());
if (comment) {
cg_printf(" // ");
}
cg_printf(" = ");
ConstantExpressionPtr con =
dynamic_pointer_cast<ConstantExpression>(m_defaultValue);
if (isCVarRef && con && con->isNull()) {
cg_printf("null_variant");
} else {
if (comment) {
cg.setContext(CodeGenerator::CppParameterDefaultValueImpl);
} else {
cg.setContext(CodeGenerator::CppParameterDefaultValueDecl);
}
m_defaultValue->outputCPP(cg, ar);
cg.setContext(context);
}
if (comment) {
cg_printf("\n");
}
}
}
void SimpleVariable::outputCPPImpl(CodeGenerator &cg, AnalysisResultPtr ar) {
VariableTablePtr variables = getScope()->getVariables();
if (m_this) {
ASSERT((getContext() & ObjectContext) == 0);
if (hasContext(OprLValue) || hasContext(AssignmentLHS)) {
cg_printf("throw_assign_this()");
return;
}
if (variables->getAttribute(VariableTable::ContainsLDynamicVariable)) {
ASSERT(m_sym);
const string &namePrefix = getNamePrefix();
cg_printf("%s%sthis",
namePrefix.c_str(),
variables->getVariablePrefix(m_sym));
} else if (hasContext(DeepOprLValue) ||
hasContext(DeepAssignmentLHS) ||
hasContext(LValue)) {
// $this[] op= ...; or $this[] = ...
cg_printf("Variant(GET_THIS())");
} else {
ClassScopePtr cls = getOriginalClass();
if (!cls || cls->derivedByDynamic()) {
cg_printf("Object(GET_THIS())");
} else {
cg_printf("GET_THIS_TYPED(%s)", cls->getId().c_str());
}
}
} else if (m_superGlobal) {
const string &name = variables->getGlobalVariableName(ar, m_name);
cg_printf("g->%s", name.c_str());
} else if (m_globals) {
cg_printf("get_global_array_wrapper()");
} else {
ASSERT(m_sym);
bool sw = false;
if (m_sym->isShrinkWrapped() &&
m_context == Declaration) {
ASSERT(!getFunctionScope()->isGenerator());
TypePtr type = m_sym->getFinalType();
type->outputCPPDecl(cg, ar, getScope());
sw = true;
cg_printf(" ");
}
const string &prefix0 = getNamePrefix();
const char *prefix1 = variables->getVariablePrefix(m_sym);
cg_printf("%s%s%s",
prefix0.c_str(),
prefix1,
CodeGenerator::FormatLabel(m_name).c_str());
if (m_originalSym) {
cg.printf(" /* %s */", m_originalSym->getName().c_str());
}
if (sw) {
TypePtr type = m_sym->getFinalType();
const char *initializer = type->getCPPInitializer();
if (initializer) {
cg_printf(" = %s", initializer);
}
}
}
}
bool SimpleVariable::hasAssignableCPPVariable() const {
if (!m_this) return true;
if (hasAnyContext(OprLValue | AssignmentLHS)) return false;
VariableTablePtr variables = getScope()->getVariables();
return variables->getAttribute(VariableTable::ContainsLDynamicVariable);
}
TypePtr SimpleVariable::inferAndCheck(AnalysisResultPtr ar, TypePtr type,
bool coerce) {
IMPLEMENT_INFER_AND_CHECK_ASSERT(getScope());
resetTypes();
TypePtr ret;
ConstructPtr construct = shared_from_this();
BlockScopePtr scope = getScope();
VariableTablePtr variables = scope->getVariables();
// check function parameter that can occur in lval context
if (m_sym && m_sym->isParameter() &&
m_context & (LValue | RefValue | DeepReference |
UnsetContext | InvokeArgument | OprLValue | DeepOprLValue)) {
m_sym->setLvalParam();
}
if (coerce && m_sym && type && type->is(Type::KindOfAutoSequence)) {
TypePtr t = m_sym->getType();
if (!t || t->is(Type::KindOfVoid) ||
t->is(Type::KindOfSome) || t->is(Type::KindOfArray)) {
type = Type::Array;
}
}
if (m_this) {
ret = Type::Object;
ClassScopePtr cls = getOriginalClass();
if (cls && (hasContext(ObjectContext) || !cls->derivedByDynamic())) {
ret = Type::CreateObjectType(cls->getName());
}
if (!hasContext(ObjectContext) &&
variables->getAttribute(VariableTable::ContainsDynamicVariable)) {
if (variables->getAttribute(VariableTable::ContainsLDynamicVariable)) {
ret = Type::Variant;
}
ret = variables->add(m_sym, ret, true, ar,
construct, scope->getModifiers());
}
} else if ((m_context & (LValue|Declaration)) &&
!(m_context & (ObjectContext|RefValue))) {
if (m_globals) {
ret = Type::Array;
} else if (m_superGlobal) {
ret = m_superGlobalType;
} else if (m_superGlobalType) { // For system
ret = variables->add(m_sym, m_superGlobalType,
((m_context & Declaration) != Declaration), ar,
construct, scope->getModifiers());
} else {
ret = variables->add(m_sym, type,
((m_context & Declaration) != Declaration), ar,
construct, scope->getModifiers());
}
} else {
if (m_superGlobalType) {
ret = m_superGlobalType;
} else if (m_globals) {
ret = Type::Array;
} else if (scope->is(BlockScope::ClassScope)) {
ASSERT(getClassScope().get() == scope.get());
// ClassVariable expression will come to this block of code
ret = getClassScope()->checkProperty(getScope(), m_sym, type, true, ar);
} else {
TypePtr tmpType = type;
if (m_context & RefValue) {
tmpType = Type::Variant;
coerce = true;
}
ret = variables->checkVariable(m_sym, tmpType, coerce, ar, construct);
if (ret && (ret->is(Type::KindOfSome) || ret->is(Type::KindOfAny))) {
ret = Type::Variant;
}
}
}
// if m_assertedType is set, then this is a type assertion node
TypePtr inType = m_assertedType ?
GetAssertedInType(ar, m_assertedType, ret) : ret;
TypePtr actual = propagateTypes(ar, inType);
setTypes(ar, actual, type);
if (Type::SameType(actual, ret)) {
m_implementedType.reset();
} else {
m_implementedType = ret;
}
return actual;
}
void SimpleVariable::analyzeProgram(AnalysisResultPtr ar) {
m_superGlobal = BuiltinSymbols::IsSuperGlobal(m_name);
m_superGlobalType = BuiltinSymbols::GetSuperGlobalType(m_name);
VariableTablePtr variables = getScope()->getVariables();
if (m_superGlobal) {
variables->setAttribute(VariableTable::NeedGlobalPointer);
} else if (m_name == "GLOBALS") {
m_globals = true;
} else {
m_sym = variables->addDeclaredSymbol(
m_name, hhvm && Option::OutputHHBC ?
shared_from_this() : ConstructPtr());
}
if (ar->getPhase() == AnalysisResult::AnalyzeAll) {
if (FunctionScopePtr func = getFunctionScope()) {
if (m_name == "this" && (func->inPseudoMain() || getClassScope())) {
func->setContainsThis();
m_this = true;
if (!hasContext(ObjectContext)) {
bool unset = hasAllContext(UnsetContext | LValue);
func->setContainsBareThis(
true,
hasAnyContext(RefValue | RefAssignmentLHS) ||
m_sym->isRefClosureVar() || unset);
if (variables->getAttribute(VariableTable::ContainsDynamicVariable)) {
ClassScopePtr cls = getClassScope();
TypePtr t = !cls || cls->isRedeclaring() ?
Type::Variant : Type::CreateObjectType(cls->getName());
variables->add(m_sym, t, true, ar, shared_from_this(),
getScope()->getModifiers());
}
}
}
if (m_sym && !(m_context & AssignmentLHS) &&
!((m_context & UnsetContext) && (m_context & LValue))) {
m_sym->setUsed();
}
}
} else if (ar->getPhase() == AnalysisResult::AnalyzeFinal) {
if (m_sym) {
if (!m_sym->isSystem() &&
!(getContext() &
(LValue|RefValue|RefParameter|UnsetContext|ExistContext)) &&
m_sym->getDeclaration().get() == this &&
!variables->getAttribute(VariableTable::ContainsLDynamicVariable) &&
!getScope()->is(BlockScope::ClassScope)) {
if (getScope()->inPseudoMain()) {
Compiler::Error(Compiler::UseUndeclaredGlobalVariable,
shared_from_this());
} else if (!m_sym->isClosureVar()) {
Compiler::Error(Compiler::UseUndeclaredVariable, shared_from_this());
}
}
// check function parameter that can occur in lval context
if (m_sym->isParameter() &&
m_context & (LValue | RefValue | DeepReference |
UnsetContext | InvokeArgument | OprLValue |
DeepOprLValue)) {
m_sym->setLvalParam();
}
}
if (m_superGlobal || m_name == "GLOBALS") {
FunctionScopePtr func = getFunctionScope();
if (func) func->setNeedsCheckMem();
}
}
}
void SimpleVariable::analyzeProgram(AnalysisResultPtr ar) {
m_superGlobal = BuiltinSymbols::IsSuperGlobal(m_name);
VariableTablePtr variables = getScope()->getVariables();
if (m_name == "GLOBALS") {
m_globals = true;
} else {
m_sym = variables->addDeclaredSymbol(m_name, shared_from_this());
}
if (m_name == "http_response_header" || m_name == "php_errormsg") {
setInited();
}
if (ar->getPhase() == AnalysisResult::AnalyzeAll) {
if (FunctionScopePtr func = getFunctionScope()) {
if (m_name == "this" && func->mayContainThis()) {
func->setContainsThis();
m_this = true;
if (!hasContext(ObjectContext)) {
bool unset = hasAllContext(UnsetContext | LValue);
func->setContainsBareThis(
true,
hasAnyContext(RefValue | RefAssignmentLHS) ||
m_sym->isRefClosureVar() || unset);
if (variables->getAttribute(VariableTable::ContainsDynamicVariable)) {
variables->add(m_sym, true, ar, shared_from_this(),
getScope()->getModifiers());
}
}
}
if (m_sym && !(m_context & AssignmentLHS) &&
!((m_context & UnsetContext) && (m_context & LValue))) {
m_sym->setUsed();
}
}
} else if (ar->getPhase() == AnalysisResult::AnalyzeFinal) {
if (m_sym && !m_this) {
if (!m_sym->isSystem() &&
!(getContext() &
(LValue|RefValue|RefParameter|UnsetContext|ExistContext)) &&
m_sym->getDeclaration().get() == this &&
!m_sym->isParameter()) {
if (!variables->getAttribute(VariableTable::ContainsLDynamicVariable) &&
!getScope()->is(BlockScope::ClassScope)) {
if (getScope()->inPseudoMain()) {
Compiler::Error(Compiler::UseUndeclaredGlobalVariable,
shared_from_this());
} else if (!m_sym->isClosureVar()) {
Compiler::Error(Compiler::UseUndeclaredVariable,
shared_from_this());
}
}
}
// check function parameter that can occur in lval context
if (m_sym->isParameter() &&
m_context & (LValue | RefValue | DeepReference |
UnsetContext | InvokeArgument | OprLValue |
DeepOprLValue)) {
m_sym->setLvalParam();
}
}
}
}