TypedResult<TypeSpecifier> BinaryExpression::ComputeResultType(
const_shared_ptr<Expression> left, const_shared_ptr<Expression> right,
const OperatorType op,
const shared_ptr<ExecutionContext> execution_context) {
auto left_type_specifier_result = left->GetTypeSpecifier(execution_context,
AliasResolution::RESOLVE);
auto right_type_specifier_result = right->GetTypeSpecifier(
execution_context, AliasResolution::RESOLVE);
auto errors = left_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(errors)) {
errors = right_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(errors)) {
const_shared_ptr<PrimitiveTypeSpecifier> left_as_primitive =
std::dynamic_pointer_cast<const PrimitiveTypeSpecifier>(
left_type_specifier_result.GetData());
const_shared_ptr<PrimitiveTypeSpecifier> right_as_primitive =
std::dynamic_pointer_cast<const PrimitiveTypeSpecifier>(
right_type_specifier_result.GetData());
if (left_as_primitive
&& left_as_primitive != PrimitiveTypeSpecifier::GetNone()
&& right_as_primitive
&& right_as_primitive
!= PrimitiveTypeSpecifier::GetNone()) {
const BasicType left_basic_type =
left_as_primitive->GetBasicType();
const BasicType right_basic_type =
right_as_primitive->GetBasicType();
if (op == EQUAL || op == NOT_EQUAL || op == LESS_THAN
|| op == LESS_THAN_EQUAL || op == GREATER_THAN
|| op == GREATER_THAN_EQUAL || op == AND || op == OR) {
return TypedResult<TypeSpecifier>(
PrimitiveTypeSpecifier::GetBoolean(), errors);
}
if (op == MOD) {
return TypedResult<TypeSpecifier>(
PrimitiveTypeSpecifier::GetInt(), errors);
}
if (right_basic_type >= left_basic_type) {
return TypedResult<TypeSpecifier>(right_as_primitive,
errors);
} else {
return TypedResult<TypeSpecifier>(left_as_primitive, errors);
}
} else {
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::INVALID_TYPE_COMBINATION,
right->GetLocation().begin), errors);
}
}
}
return TypedResult<TypeSpecifier>(nullptr, errors);
}
const PreprocessResult ComplexInstantiationStatement::Preprocess(
const shared_ptr<ExecutionContext> context,
const shared_ptr<ExecutionContext> closure,
const_shared_ptr<TypeSpecifier> return_type_specifier) const {
auto type_result = m_type_specifier->GetType(context->GetTypeTable());
auto errors = type_result->GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto type = type_result->GetData<TypeDefinition>();
auto as_complex = dynamic_pointer_cast<const ComplexType>(type);
if (as_complex) {
auto existing = context->GetSymbol(GetName(), SHALLOW);
if (existing == Symbol::GetDefaultSymbol()) {
auto result = as_complex->PreprocessSymbol(context,
m_type_specifier, GetInitializerExpression());
errors = result->GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto symbol = result->GetData<Symbol>();
if (symbol) {
auto name = *GetName();
const InsertResult insert_result =
context->InsertSymbol(name, symbol);
if (insert_result != INSERT_SUCCESS) {
assert(false);
}
} else {
assert(false);
}
}
} else {
//symbol already exists
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::PREVIOUS_DECLARATION,
m_type_specifier_location.begin,
*GetName()), errors);
}
} else {
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::NOT_A_COMPOUND_TYPE,
m_type_specifier_location.begin,
m_type_specifier->ToString()), errors);
}
}
return PreprocessResult(PreprocessResult::ReturnCoverage::NONE, errors);
}
const AnalysisResult PrimitiveTypeSpecifier::AnalyzeAssignmentTo(
const_shared_ptr<TypeSpecifier> other,
const TypeTable& type_table) const {
auto resolved_other_result = NestedTypeSpecifier::Resolve(other,
type_table);
if (ErrorList::IsTerminator(resolved_other_result.GetErrors())) {
auto resolved_other = resolved_other_result.GetData();
auto widening_analysis = resolved_other->AnalyzeWidening(type_table,
*this);
if (widening_analysis != AnalysisResult::INCOMPATIBLE) {
return widening_analysis;
}
auto other_as_primitive = dynamic_pointer_cast<
const PrimitiveTypeSpecifier>(resolved_other);
if (other_as_primitive) {
const BasicType other_type = other_as_primitive->GetBasicType();
if (other_type != BasicType::NONE) {
if (m_basic_type == other_type) {
return AnalysisResult::EQUIVALENT;
} else if (m_basic_type < other_type) {
return AnalysisResult::UNAMBIGUOUS;
}
}
}
}
return INCOMPATIBLE;
}
const ExecutionResult InvokeStatement::Execute(
const shared_ptr<ExecutionContext> context,
const shared_ptr<ExecutionContext> closure) const {
auto result = m_expression->Evaluate(context, closure);
return ExecutionResult(result->GetErrors());
}
const PreprocessResult ExitStatement::Preprocess(
const shared_ptr<ExecutionContext> context,
const shared_ptr<ExecutionContext> closure,
const_shared_ptr<TypeSpecifier> return_type_specifier) const {
ErrorListRef errors = ErrorList::GetTerminator();
if (m_exit_expression) {
auto expression_type_specifier_result =
m_exit_expression->GetTypeSpecifier(context);
errors = expression_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto expression_type_specifier =
expression_type_specifier_result.GetData();
const_shared_ptr<PrimitiveTypeSpecifier> expression_as_primitive =
std::dynamic_pointer_cast<const PrimitiveTypeSpecifier>(
expression_type_specifier);
if (expression_as_primitive == nullptr
|| !(expression_as_primitive->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(),
context->GetTypeTable()))) {
yy::location position = m_exit_expression->GetLocation();
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::EXIT_STATUS_MUST_BE_AN_INTEGER,
position.begin,
expression_type_specifier->ToString()), errors);
}
}
}
return PreprocessResult(PreprocessResult::ReturnCoverage::NONE, errors);
}
const_shared_ptr<Result> ComplexType::PreprocessSymbol(
const std::shared_ptr<ExecutionContext> execution_context,
const_shared_ptr<ComplexTypeSpecifier> type_specifier,
const_shared_ptr<Expression> initializer) const {
ErrorListRef errors = ErrorList::GetTerminator();
plain_shared_ptr<void> value;
plain_shared_ptr<Symbol> symbol = Symbol::GetDefaultSymbol();
auto type_table = execution_context->GetTypeTable();
if (initializer) {
errors = initializer->Validate(execution_context);
if (ErrorList::IsTerminator(errors)) {
return PreprocessSymbolCore(execution_context, type_specifier,
initializer);
}
} else {
auto type_result = type_specifier->GetType(type_table);
errors = type_result->GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto type = type_result->GetData<TypeDefinition>();
value = type->GetDefaultValue(type_table);
}
}
if (ErrorList::IsTerminator(errors)) {
//we've been able to get a good initial value (that is, no errors have occurred)
symbol = GetSymbol(type_table, type_specifier, value);
}
return make_shared<Result>(symbol, errors);
}
int SSL_shutdown(SSL* ssl)
{
if (!ssl->GetQuietShutdown()) {
Alert alert(warning, close_notify);
sendAlert(*ssl, alert);
}
ssl->useLog().ShowTCP(ssl->getSocket().get_fd(), true);
GetErrors().Remove();
return SSL_SUCCESS;
}
const ErrorListRef ComplexType::Instantiate(
const std::shared_ptr<ExecutionContext> execution_context,
const_shared_ptr<ComplexTypeSpecifier> type_specifier,
const_shared_ptr<std::string> instance_name,
const_shared_ptr<Expression> initializer) const {
ErrorListRef errors = ErrorList::GetTerminator();
SetResult set_result = SetResult::NO_SET_RESULT;
yy::location location = GetDefaultLocation();
plain_shared_ptr<TypeSpecifier> initializer_type_specifier = nullptr;
if (initializer && !initializer->IsConstant()) {
location = initializer->GetLocation();
auto initializer_type_specifier_result = initializer->GetTypeSpecifier(
execution_context);
errors = initializer_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto initializer_type_specifier =
initializer_type_specifier_result.GetData();
auto result = initializer->Evaluate(execution_context,
execution_context);
errors = result->GetErrors();
if (ErrorList::IsTerminator(errors)) {
set_result = InstantiateCore(execution_context, type_specifier,
initializer_type_specifier, *instance_name,
result->GetData<void>());
}
}
}
if (set_result) {
errors =
ToErrorListRef(set_result, location, instance_name,
execution_context->GetSymbol(*instance_name)->GetTypeSpecifier(),
initializer_type_specifier); //initializer_type will be null if initializer is not set
}
return errors;
}
const_shared_ptr<Result> FunctionDeclaration::FromTypeSpecifier(
const FunctionTypeSpecifier& type_specifier,
const TypeTable& type_table) {
ErrorListRef errors = ErrorList::GetTerminator();
TypeSpecifierListRef subject = type_specifier.GetParameterTypeList();
DeclarationListRef result = DeclarationList::GetTerminator();
int count = 1;
while (!TypeSpecifierList::IsTerminator(subject)) {
ostringstream buf;
const_shared_ptr<TypeSpecifier> data = subject->GetData();
buf << "Arg" << count;
auto parameter_type_result = data->GetType(type_table);
auto parameter_errors = parameter_type_result->GetErrors();
if (ErrorList::IsTerminator(parameter_errors)) {
auto parameter_type =
parameter_type_result->GetData<TypeDefinition>();
result = DeclarationList::From(
parameter_type->GetDeclarationStatement(
GetDefaultLocation(), data, GetDefaultLocation(),
const_shared_ptr<string>(new string(buf.str())),
GetDefaultLocation(), nullptr), result);
} else {
errors = ErrorList::Concatenate(errors, parameter_errors);
}
count++;
subject = subject->GetNext();
}
plain_shared_ptr<FunctionDeclaration> declaration = nullptr;
if (ErrorList::IsTerminator(errors)) {
DeclarationListRef declaration_list = DeclarationList::Reverse(result);
declaration = make_shared<FunctionDeclaration>(declaration_list,
type_specifier.GetReturnTypeSpecifier(),
type_specifier.GetLocation());
}
return make_shared<Result>(declaration, errors);
}
const std::string MaybeType::ValueToString(const TypeTable& type_table,
const Indent& indent, const_shared_ptr<void> value) const {
ostringstream buffer;
auto sum_instance = static_pointer_cast<const Sum>(value);
auto tag = sum_instance->GetTag();
buffer << "{" << *tag << "}";
if (*tag == *TypeTable::GetNilName()) {
} else if (*tag == *MaybeTypeSpecifier::VARIANT_NAME) {
auto type_result = m_base_type_specifier->GetType(type_table, RESOLVE);
if (ErrorList::IsTerminator(type_result->GetErrors())) {
auto type = type_result->GetData<TypeDefinition>();
auto inner_value = sum_instance->GetValue();
buffer << type->GetValueSeparator(indent, inner_value.get());
buffer << type->ValueToString(type_table, indent + 1, inner_value);
} else {
buffer << "<undefined type>";
}
} else {
buffer << "<undefined variant>";
}
return buffer.str();
}
TypedResult<string> OpenExpression::ToString(
const shared_ptr<ExecutionContext> execution_context) const {
ostringstream buf;
buf << "open(";
auto errors = ErrorList::GetTerminator();
ArgumentListRef argument = GetArgumentListRef();
while (!ArgumentList::IsTerminator(argument)) {
auto argument_result = argument->GetData()->ToString(execution_context);
errors = ErrorList::Concatenate(errors, argument_result.GetErrors());
if (ErrorList::IsTerminator(errors)) {
buf << *(argument_result.GetData());
if (!ArgumentList::IsTerminator(argument->GetNext())) {
buf << ",";
}
}
argument = argument->GetNext();
}
buf << ")";
return TypedResult<string>(const_shared_ptr<string>(new string(buf.str())),
errors);
}
const ExecutionResult ComplexInstantiationStatement::Execute(
const shared_ptr<ExecutionContext> context,
const shared_ptr<ExecutionContext> closure) const {
auto type_result = m_type_specifier->GetType(context->GetTypeTable(),
RESOLVE);
auto errors = type_result->GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto type = type_result->GetData<TypeDefinition>();
auto as_complex = dynamic_pointer_cast<const ComplexType>(type);
if (as_complex) {
errors = as_complex->Instantiate(context, m_type_specifier,
GetName(), GetInitializerExpression());
} else {
//type does not exist
errors = ErrorList::From(
make_shared<Error>(Error::RUNTIME, Error::UNDECLARED_TYPE,
m_type_specifier_location.begin,
m_type_specifier->ToString()), errors);
}
}
return ExecutionResult(errors);
}
int Compile(KIMLBYTE *&code, KIMLUINT &codeSize)
{
auto compiler = new Compiler();
if (!compiler)
{
showError("Cannot initialize compiler service.\n");
return RET_FAIL_COMPILER;
}
std::vector<std::string> files;
for (auto it = includeFiles.begin(); it != includeFiles.end(); ++it)
{
files.push_back(*it);
}
files.push_back(inputfile);
bool failed = false;
FILE *fp;
for (auto it = files.begin(); it != files.end(); ++it)
{
fp = fopen(it->c_str(), "r");
if (!fp)
{
showError("Cannot open: %s.\n", it->c_str());
delete compiler;
return RET_FAIL_IO;
}
if (!compiler->Parse(it->c_str(), fp))
{
failed = true;
}
fclose(fp);
}
if (failed)
{
showError("*** Parsing failed.\n");
delete compiler;
return RET_FAIL_COMPILER;
}
if (!compiler->Compile(hasDebugInfo))
{
auto &errors = compiler->GetErrors();
for (unsigned int i = 0, c = errors.size(); i < c; ++i)
{
auto &error = errors[i];
KIMLCSTRING msg = compileErrorMessages[error.code];
showError("%s[%u]: %s\n", files[error.compileUnitIndex].c_str(), error.line, msg);
}
delete compiler;
return RET_FAIL_COMPILER;
}
if (!compiler->Finish())
{
showError("*** Failed to finish compilation.\n");
delete compiler;
return RET_FAIL_COMPILER;
}
if (!compiler->GetByteCode(&code, &codeSize))
{
showError("*** Failed to export bytecode.\n");
delete compiler;
return RET_FAIL_COMPILER;
}
delete compiler;
return RET_OK;
}
int SSL_clear(SSL* ssl)
{
GetErrors().Remove();
return SSL_SUCCESS;
}
int SSL_accept(SSL* ssl)
{
if (ssl->GetError() == YasslError(SSL_ERROR_WANT_READ))
ssl->SetError(no_error);
if (ssl->GetError() == YasslError(SSL_ERROR_WANT_WRITE)) {
ssl->SetError(no_error);
ssl->SendWriteBuffered();
if (!ssl->GetError())
ssl->useStates().UseAccept() =
AcceptState(ssl->getStates().GetAccept() + 1);
}
switch (ssl->getStates().GetAccept()) {
case ACCEPT_BEGIN :
processReply(*ssl);
if (!ssl->GetError())
ssl->useStates().UseAccept() = ACCEPT_FIRST_REPLY_DONE;
case ACCEPT_FIRST_REPLY_DONE :
sendServerHello(*ssl);
if (!ssl->getSecurity().get_resuming()) {
sendCertificate(*ssl);
if (ssl->getSecurity().get_connection().send_server_key_)
sendServerKeyExchange(*ssl);
if(ssl->getCrypto().get_certManager().verifyPeer())
sendCertificateRequest(*ssl);
sendServerHelloDone(*ssl);
ssl->flushBuffer();
}
if (!ssl->GetError())
ssl->useStates().UseAccept() = SERVER_HELLO_DONE;
case SERVER_HELLO_DONE :
if (!ssl->getSecurity().get_resuming()) {
while (ssl->getStates().getServer() < clientFinishedComplete) {
if (ssl->GetError()) break;
processReply(*ssl);
}
}
if (!ssl->GetError())
ssl->useStates().UseAccept() = ACCEPT_SECOND_REPLY_DONE;
case ACCEPT_SECOND_REPLY_DONE :
sendChangeCipher(*ssl);
sendFinished(*ssl, server_end);
ssl->flushBuffer();
if (!ssl->GetError())
ssl->useStates().UseAccept() = ACCEPT_FINISHED_DONE;
case ACCEPT_FINISHED_DONE :
if (ssl->getSecurity().get_resuming()) {
while (ssl->getStates().getServer() < clientFinishedComplete) {
if (ssl->GetError()) break;
processReply(*ssl);
}
}
if (!ssl->GetError())
ssl->useStates().UseAccept() = ACCEPT_THIRD_REPLY_DONE;
case ACCEPT_THIRD_REPLY_DONE :
ssl->useLog().ShowTCP(ssl->getSocket().get_fd());
if (ssl->GetError()) {
GetErrors().Add(ssl->GetError());
return SSL_FATAL_ERROR;
}
return SSL_SUCCESS;
default:
return SSL_FATAL_ERROR; // unknown state
}
}
// if you get an error from connect see note at top of README
int SSL_connect(SSL* ssl)
{
if (ssl->GetError() == YasslError(SSL_ERROR_WANT_READ))
ssl->SetError(no_error);
if (ssl->GetError() == YasslError(SSL_ERROR_WANT_WRITE)) {
ssl->SetError(no_error);
ssl->SendWriteBuffered();
if (!ssl->GetError())
ssl->useStates().UseConnect() =
ConnectState(ssl->getStates().GetConnect() + 1);
}
ClientState neededState;
switch (ssl->getStates().GetConnect()) {
case CONNECT_BEGIN :
sendClientHello(*ssl);
if (!ssl->GetError())
ssl->useStates().UseConnect() = CLIENT_HELLO_SENT;
case CLIENT_HELLO_SENT :
neededState = ssl->getSecurity().get_resuming() ?
serverFinishedComplete : serverHelloDoneComplete;
while (ssl->getStates().getClient() < neededState) {
if (ssl->GetError()) break;
processReply(*ssl);
// if resumption failed, reset needed state
if (neededState == serverFinishedComplete)
if (!ssl->getSecurity().get_resuming())
neededState = serverHelloDoneComplete;
}
if (!ssl->GetError())
ssl->useStates().UseConnect() = FIRST_REPLY_DONE;
case FIRST_REPLY_DONE :
if(ssl->getCrypto().get_certManager().sendVerify())
sendCertificate(*ssl);
if (!ssl->getSecurity().get_resuming())
sendClientKeyExchange(*ssl);
if(ssl->getCrypto().get_certManager().sendVerify())
sendCertificateVerify(*ssl);
sendChangeCipher(*ssl);
sendFinished(*ssl, client_end);
ssl->flushBuffer();
if (!ssl->GetError())
ssl->useStates().UseConnect() = FINISHED_DONE;
case FINISHED_DONE :
if (!ssl->getSecurity().get_resuming())
while (ssl->getStates().getClient() < serverFinishedComplete) {
if (ssl->GetError()) break;
processReply(*ssl);
}
if (!ssl->GetError())
ssl->useStates().UseConnect() = SECOND_REPLY_DONE;
case SECOND_REPLY_DONE :
ssl->verifyState(serverFinishedComplete);
ssl->useLog().ShowTCP(ssl->getSocket().get_fd());
if (ssl->GetError()) {
GetErrors().Add(ssl->GetError());
return SSL_FATAL_ERROR;
}
return SSL_SUCCESS;
default :
return SSL_FATAL_ERROR; // unkown state
}
}
const ErrorListRef BinaryExpression::Validate(
const shared_ptr<ExecutionContext> execution_context,
const_shared_ptr<TypeSpecifier> valid_left,
const_shared_ptr<TypeSpecifier> valid_right) const {
ErrorListRef errors = ErrorList::GetTerminator();
const OperatorType op = GetOperator();
auto left = GetLeft();
auto left_errors = left->Validate(execution_context);
if (ErrorList::IsTerminator(left_errors)) {
auto left_type_specifier_result = left->GetTypeSpecifier(
execution_context);
auto left_type_specifier_errors =
left_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(left_type_specifier_errors)) {
auto left_type_specifier = left_type_specifier_result.GetData();
auto left_analysis = left_type_specifier->AnalyzeAssignmentTo(
valid_left, execution_context->GetTypeTable());
if (left_analysis != EQUIVALENT && left_analysis != UNAMBIGUOUS) {
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::INVALID_LEFT_OPERAND_TYPE,
left->GetLocation().begin,
OperatorToString(op)), errors);
}
} else {
errors = ErrorList::Concatenate(errors, left_type_specifier_errors);
}
} else {
errors = ErrorList::Concatenate(errors, left_errors);
}
auto right = GetRight();
auto right_errors = right->Validate(execution_context);
if (ErrorList::IsTerminator(right_errors)) {
auto right_type_specifier_result = GetRight()->GetTypeSpecifier(
execution_context);
auto right_type_specifier_errors =
right_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(right_type_specifier_errors)) {
auto right_type_specifier = right_type_specifier_result.GetData();
auto right_analysis = right_type_specifier->AnalyzeAssignmentTo(
valid_right, execution_context->GetTypeTable());
if (right_analysis != EQUIVALENT && right_analysis != UNAMBIGUOUS) {
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::INVALID_RIGHT_OPERAND_TYPE,
right->GetLocation().begin,
OperatorToString(op)), errors);
}
} else {
errors = ErrorList::Concatenate(errors,
right_type_specifier_errors);
}
} else {
errors = ErrorList::Concatenate(errors, right_errors);
}
return errors;
}
const_shared_ptr<Result> BinaryExpression::Evaluate(
const shared_ptr<ExecutionContext> context,
const shared_ptr<ExecutionContext> closure) const {
ErrorListRef errors = ErrorList::GetTerminator();
const_shared_ptr<Expression> left = GetLeft();
const_shared_ptr<Expression> right = GetRight();
const_shared_ptr<Result> left_result = left->Evaluate(context, closure);
if (!ErrorList::IsTerminator(left_result->GetErrors())) {
return left_result;
}
const_shared_ptr<Result> right_result = right->Evaluate(context, closure);
if (!ErrorList::IsTerminator(right_result->GetErrors())) {
return right_result;
}
auto left_type_specifier_result = left->GetTypeSpecifier(context);
auto right_type_specifier_result = right->GetTypeSpecifier(context);
errors = left_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(errors)) {
errors = right_type_specifier_result.GetErrors();
if (ErrorList::IsTerminator(errors)) {
yy::location left_position = left->GetLocation();
yy::location right_position = right->GetLocation();
auto type_table = context->GetTypeTable();
auto left_type = left_type_specifier_result.GetData();
auto right_type = right_type_specifier_result.GetData();
// This logic is essentially a big muxer.
// It works in tandem with C++ type widening to convert operands to the same data type
if (left_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetBoolean(), type_table)
== EQUIVALENT) {
bool left_value = *(left_result->GetData<bool>());
if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetBoolean(), type_table)
== EQUIVALENT) {
bool right_value = *(right_result->GetData<bool>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetByte(), type_table)
== EQUIVALENT) {
auto right_value = *(right_result->GetData<std::uint8_t>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(), type_table)
== EQUIVALENT) {
int right_value = *(right_result->GetData<int>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetDouble(), type_table)
== EQUIVALENT) {
double right_value = *(right_result->GetData<double>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetString(), type_table)
== EQUIVALENT) {
string right_value = *(right_result->GetData<string>());
return compute(left_value, right_value, left_position,
right_position);
} else {
assert(false);
}
} else if (left_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetByte(), type_table)
== EQUIVALENT) {
auto left_value = *(left_result->GetData<std::uint8_t>());
if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetBoolean(), type_table)
== EQUIVALENT) {
bool right_value = *(right_result->GetData<bool>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetByte(), type_table)
== EQUIVALENT) {
auto right_value = *(right_result->GetData<std::uint8_t>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(), type_table)
== EQUIVALENT) {
int right_value = *(right_result->GetData<int>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetDouble(), type_table)
== EQUIVALENT) {
double right_value = *(right_result->GetData<double>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetString(), type_table)
== EQUIVALENT) {
string right_value = *(right_result->GetData<string>());
return compute(left_value, right_value, left_position,
right_position);
} else {
assert(false);
}
} else if (left_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(), type_table)
== EQUIVALENT) {
int left_value = *(left_result->GetData<int>());
if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetBoolean(), type_table)
== EQUIVALENT) {
bool right_value = *(right_result->GetData<bool>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetByte(), type_table)
== EQUIVALENT) {
auto right_value = *(right_result->GetData<std::uint8_t>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(), type_table)
== EQUIVALENT) {
int right_value = *(right_result->GetData<int>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetDouble(), type_table)
== EQUIVALENT) {
double right_value = *(right_result->GetData<double>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetString(), type_table)
== EQUIVALENT) {
string right_value = *(right_result->GetData<string>());
return compute(left_value, right_value, left_position,
right_position);
} else {
assert(false);
}
} else if (left_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetDouble(), type_table)
== EQUIVALENT) {
double left_value = *(left_result->GetData<double>());
if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetBoolean(), type_table)
== EQUIVALENT) {
bool right_value = *(right_result->GetData<bool>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetByte(), type_table)
== EQUIVALENT) {
auto right_value = *(right_result->GetData<std::uint8_t>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(), type_table)
== EQUIVALENT) {
int right_value = *(right_result->GetData<int>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetDouble(), type_table)
== EQUIVALENT) {
double right_value = *(right_result->GetData<double>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetString(), type_table)
== EQUIVALENT) {
string right_value = *(right_result->GetData<string>());
return compute(left_value, right_value, left_position,
right_position);
} else {
assert(false);
}
} else if (left_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetString(), type_table)
== EQUIVALENT) {
string left_value = *(left_result->GetData<string>());
if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetBoolean(), type_table)
== EQUIVALENT) {
bool right_value = *(right_result->GetData<bool>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetByte(), type_table)
== EQUIVALENT) {
auto right_value = *(right_result->GetData<std::uint8_t>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetInt(), type_table)
== EQUIVALENT) {
int right_value = *(right_result->GetData<int>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetDouble(), type_table)
== EQUIVALENT) {
double right_value = *(right_result->GetData<double>());
return compute(left_value, right_value, left_position,
right_position);
} else if (right_type->AnalyzeAssignmentTo(
PrimitiveTypeSpecifier::GetString(), type_table)
== EQUIVALENT) {
string right_value = *(right_result->GetData<string>());
return compute(left_value, right_value, left_position,
right_position);
} else {
assert(false);
}
} else {
assert(false);
}
}
}
return make_shared<Result>(nullptr, errors);
}
const_shared_ptr<Result> OpenExpression::Evaluate(
const shared_ptr<ExecutionContext> context,
const shared_ptr<ExecutionContext> closure) const {
// need to handle in-band errors
// return file handle
// return platform-dependent error codes; should handle mapping to platform-independent codes in std lib.
// we assume that our validation pass caught any argument length issues
auto path_argument_expression = GetArgumentListRef()->GetData();
auto path_argument_evaluation = path_argument_expression->Evaluate(context,
closure);
auto index = 0;
auto result_code = 0;
auto result_message = make_shared<string>();
auto errors = path_argument_evaluation->GetErrors();
if (ErrorList::IsTerminator(errors)) {
auto path = path_argument_evaluation->GetData<string>();
auto mode_argument_expression =
GetArgumentListRef()->GetNext()->GetData();
auto mode_argument_evaluation = mode_argument_expression->Evaluate(
context, closure);
errors = mode_argument_evaluation->GetErrors();
if (ErrorList::IsTerminator(errors)) {
std::ios::openmode open_mode = std::ios::openmode();
auto mode_definition =
mode_argument_evaluation->GetData<Record>()->GetDefinition();
if (*static_pointer_cast<const bool>(
mode_definition->GetSymbol(*Builtins::STREAM_MODE_IN_NAME)->GetValue())
== true) {
open_mode = open_mode | std::ios::in;
}
if (*static_pointer_cast<const bool>(
mode_definition->GetSymbol(*Builtins::STREAM_MODE_OUT_NAME)->GetValue())
== true) {
open_mode = open_mode | std::ios::out;
}
if (*static_pointer_cast<const bool>(
mode_definition->GetSymbol(
*Builtins::STREAM_MODE_BINARY_NAME)->GetValue())
== true) {
open_mode = open_mode | std::ios::binary;
}
if (*static_pointer_cast<const bool>(
mode_definition->GetSymbol(*Builtins::STREAM_MODE_ATE_NAME)->GetValue())
== true) {
open_mode = open_mode | std::ios::ate;
}
if (*static_pointer_cast<const bool>(
mode_definition->GetSymbol(*Builtins::STREAM_MODE_APP_NAME)->GetValue())
== true) {
open_mode = open_mode | std::ios::app;
}
if (*static_pointer_cast<const bool>(
mode_definition->GetSymbol(
*Builtins::STREAM_MODE_TRUNC_NAME)->GetValue())
== true) {
open_mode = open_mode | std::ios::trunc;
}
auto stream = make_shared<fstream>();
stream->exceptions(std::ifstream::failbit | std::ifstream::badbit);
try {
stream->open(*path, open_mode);
// add stream to file handle list
// N.B. that this process is not synchronized
index = Builtins::get_file_handle_map()->size();
Builtins::get_file_handle_map()->insert(
std::pair<int, volatile_shared_ptr<fstream>>(index,
stream));
} catch (std::fstream::failure &e) {
result_code = errno;
result_message = make_shared<string>(
std::strerror(result_code));
}
}
}
auto type_table = closure->GetTypeTable();
auto error_list_type_result =
Builtins::get_error_list_type_specifier()->GetType(type_table,
RETURN);
assert(ErrorList::IsTerminator(error_list_type_result->GetErrors()));
auto error_list_type = error_list_type_result->GetData<TypeDefinition>();
if (result_code == 0) {
auto result = make_shared<Sum>(Builtins::INT_RESULT_DATA_NAME,
make_shared<int>(index));
return make_shared<Result>(result, errors);
} else {
auto error_symbol_map = make_shared<symbol_map>();
auto insert_result = error_symbol_map->insert(
std::pair<const string, const_shared_ptr<Symbol>>(
*Builtins::ERROR_CODE_NAME,
make_shared<Symbol>(make_shared<int>(result_code))));
assert(insert_result.second);
insert_result = error_symbol_map->insert(
std::pair<const string, const_shared_ptr<Symbol>>(
*Builtins::ERROR_MESSAGE_NAME,
make_shared<Symbol>(result_message)));
assert(insert_result.second);
auto error_symbol_table = make_shared<SymbolTable>(Modifier::Type::NONE,
error_symbol_map);
auto error = make_shared<Record>(error_symbol_table);
auto error_list_symbol_map = make_shared<symbol_map>();
insert_result = error_list_symbol_map->insert(
std::pair<const string, const_shared_ptr<Symbol>>(
*Builtins::ERROR_LIST_DATA_NAME,
make_shared<Symbol>(
Builtins::get_error_type_specifier(), error)));
assert(insert_result.second);
auto terminator = static_pointer_cast<const Record>(
error_list_type->GetDefaultValue(type_table));
auto error_list_sum = make_shared<Sum>(TypeTable::GetNilName(),
terminator);
insert_result = error_list_symbol_map->insert(
std::pair<const string, const_shared_ptr<Symbol>>(
*Builtins::ERROR_LIST_NEXT_NAME,
make_shared<Symbol>(
Builtins::get_error_list_maybe_type_specifier(),
error_list_sum)));
assert(insert_result.second);
auto error_list_symbol_table = make_shared<SymbolTable>(
Modifier::Type::NONE, error_list_symbol_map);
auto error_list = make_shared<Record>(error_list_symbol_table);
auto result = make_shared<Sum>(Builtins::INT_RESULT_ERRORS_NAME,
error_list);
return make_shared<Result>(result, errors);
}
}
const ErrorListRef OpenExpression::Validate(
const shared_ptr<ExecutionContext> execution_context) const {
// check argument count
auto errors = ErrorList::GetTerminator();
auto type_table = execution_context->GetTypeTable();
uint arg_count = 0;
ArgumentListRef argument = GetArgumentListRef();
while (!ArgumentList::IsTerminator(argument)) {
auto argument_subject = argument->GetData();
auto validation = argument_subject->Validate(execution_context);
errors = ErrorList::Concatenate(errors, validation);
if (ErrorList::IsTerminator(errors)) {
auto argument_type_specifier_result =
argument_subject->GetTypeSpecifier(execution_context);
errors = ErrorList::Concatenate(errors,
argument_type_specifier_result.GetErrors());
if (ErrorList::IsTerminator(errors)) {
auto argument_type_specifier =
argument_type_specifier_result.GetData();
if (arg_count == 0) {
auto specifier = PrimitiveTypeSpecifier::GetString();
auto assignability =
argument_type_specifier->AnalyzeAssignmentTo(
specifier, type_table);
if (assignability == AnalysisResult::AMBIGUOUS) {
errors =
ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::AMBIGUOUS_WIDENING_CONVERSION,
argument_type_specifier->GetLocation().begin,
argument_type_specifier->ToString(),
specifier->ToString()), errors);
} else if (assignability == INCOMPATIBLE) {
errors =
ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::ASSIGNMENT_TYPE_ERROR,
argument_type_specifier->GetLocation().begin,
argument_type_specifier->ToString(),
specifier->ToString()), errors);
}
} else if (arg_count == 1) {
auto specifier = Builtins::get_stream_mode_type_specifier();
auto assignability =
argument_type_specifier->AnalyzeAssignmentTo(
specifier, type_table);
if (assignability == AnalysisResult::AMBIGUOUS) {
errors =
ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::AMBIGUOUS_WIDENING_CONVERSION,
argument_type_specifier->GetLocation().begin,
argument_type_specifier->ToString(),
specifier->ToString()), errors);
} else if (assignability == INCOMPATIBLE) {
errors =
ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::ASSIGNMENT_TYPE_ERROR,
argument_type_specifier->GetLocation().begin,
argument_type_specifier->ToString(),
specifier->ToString()), errors);
}
} else {
// too many arguments
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC,
Error::TOO_MANY_ARGUMENTS,
argument_subject->GetLocation().begin,
"(string, stream_mode) -> int_result"),
errors);
break;
}
}
}
arg_count++;
argument = argument->GetNext();
}
if (arg_count == 0) {
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC, Error::NO_PARAMETER_DEFAULT,
GetArgumentListRefLocation().end, "path"),
errors);
}
if (arg_count == 1) {
errors = ErrorList::From(
make_shared<Error>(Error::SEMANTIC, Error::NO_PARAMETER_DEFAULT,
GetArgumentListRefLocation().end, "mode"), errors);
}
return errors;
}
IResultPtr result() const
{
auto output = join(GetOutput());
auto errors = join(GetErrors());
return IResultPtr(new PerforceResult(output.c_str(), errors.c_str(), fileResults()));
}