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type_check_visitor returned / brought values check, branches check

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ProgramSnail 2023-05-21 11:21:24 +03:00
parent a9d4d3a104
commit f6b50b16ae
3 changed files with 63 additions and 50 deletions
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14
include/type_check_visitor.hpp
View file

@ -163,6 +163,15 @@ private:
info::definition::AnyType* defined_type,
bool is_method);
void ResetReturnedAndBroughtTypes() {
if (returned_type_.has_value()) {
all_branches_returned_value_ = false;
}
if (brought_type_.has_value()) {
all_branches_brought_value_ = false;
}
}
//
bool HandleBuiltinFunctionCall(FunctionCallExpression* node);
@ -177,8 +186,13 @@ private:
std::unordered_set<utils::IdType> type_namespaces_;
utils::IdType current_type_;
std::optional<utils::IdType> returned_type_;
bool all_branches_returned_value_ = true;
std::optional<utils::IdType> brought_type_;
bool all_branches_brought_value_ = true;
std::optional<utils::IsConstModifier> is_const_definition_;
bool is_in_statement_ = false;

94
src/type_check_visitor.cpp
View file

@ -258,8 +258,13 @@ void TypeCheckVisitor::Visit(FunctionDefinitionStatement* node) {
utils::IdType returned_type = current_type_;
returned_type_ = std::nullopt;
all_branches_returned_value_ = true;
Visitor::Visit(node->value);
if (!all_branches_returned_value_) {
error_handling::HandleTypecheckError("Not all branches return value", node->base);
}
if (!returned_type_.has_value()) {
returned_type_ = current_type_;
}
@ -479,6 +484,8 @@ void TypeCheckVisitor::Visit(Match* node) { // TODO: move value to match
// TODO: several matches with one statement typecheck <- check proposed solution
std::optional<Expression*> nearest_statement;
for (ssize_t i = (ssize_t)node->matches.size() - 1; i >= 0; --i) { // TODO: internal contexts ??
ResetReturnedAndBroughtTypes();
current_type_ = value_type;
context_manager_.EnterContext();
@ -530,23 +537,27 @@ void TypeCheckVisitor::Visit(Condition* node) {
utils::IdType type;
for (size_t i = 0; i < node->conditions.size(); ++i) {
Visitor::Visit(node->conditions[i]);
if (!context_manager_.EqualValues(context_manager_.AddValue(info::type::InternalType::Bool, utils::ValueType::Tmp), current_type_)) {
error_handling::HandleTypecheckError("Condition statement condition is not bool expression", node->base);
}
ResetReturnedAndBroughtTypes();
Visitor::Visit(node->statements[i]);
Visitor::Visit(node->conditions[i]);
if (!context_manager_.EqualValues(context_manager_.AddValue(info::type::InternalType::Bool, utils::ValueType::Tmp), current_type_)) {
error_handling::HandleTypecheckError("Condition statement condition is not bool expression", node->base);
}
if (i == 0) {
type = current_type_;
} else {
if (!context_manager_.EqualValues(type, current_type_)) {
error_handling::HandleTypecheckError("Condition statement cases have different types", node->base);
}
Visitor::Visit(node->statements[i]);
if (i == 0) {
type = current_type_;
} else {
if (!context_manager_.EqualValues(type, current_type_)) {
error_handling::HandleTypecheckError("Condition statement cases have different types", node->base);
}
}
}
if (node->statements.size() > node->conditions.size()) {
ResetReturnedAndBroughtTypes();
Visitor::Visit(node->statements[node->conditions.size()]);
if (!context_manager_.EqualValues(type, current_type_)) {
@ -646,56 +657,27 @@ void TypeCheckVisitor::Visit(LoopLoop* node) {
// Statements, expressions, blocks, etc. -----------------
// TODO: check, that last statement in function definition has return type
void TypeCheckVisitor::Visit(Block* node) {
// TODO: types can be different in statement
std::optional<utils::IdType> brought_type;
std::optional<utils::IdType> returned_type = returned_type_;
all_branches_brought_value_ = true;
context_manager_.EnterContext();
for (auto& statement : node->statements) {
brought_type_ = std::nullopt;
returned_type_ = std::nullopt;
Visitor::Visit(statement);
if (brought_type_.has_value()) {
if (!brought_type.has_value()) {
brought_type = brought_type_.value();
} else {
if (!context_manager_.EqualValues(brought_type.value(), brought_type_.value())) {
error_handling::HandleTypecheckError("Different brought types in block", node->base);
}
}
}
if (returned_type_.has_value()) {
if (!returned_type.has_value()) {
returned_type = returned_type_.value();
} else {
if (!context_manager_.EqualValues(returned_type.value(), returned_type_.value())) {
error_handling::HandleTypecheckError("Different returned types in block", node->base);
}
}
}
}
context_manager_.EnterContext();
context_manager_.ExitContext();
if (brought_type.has_value()
&& !context_manager_.EqualValues(brought_type.value(),
context_manager_.AddValue(info::type::InternalType::Unit,
utils::ValueType::Tmp))
&& !brought_type_.has_value()) {
error_handling::HandleTypecheckError("Different brought types in block (no return at end)", node->base);
if (!all_branches_brought_value_) {
error_handling::HandleTypecheckError("Different brought types in block", node->base);
}
if (brought_type.has_value()) {
current_type_ = brought_type.value();
if (brought_type_.has_value()) {
current_type_ = brought_type_.value();
} else {
current_type_ = context_manager_.AddValue(info::type::InternalType::Unit, utils::ValueType::Tmp);
}
returned_type_ = returned_type;
brought_type_ = std::nullopt;
node->base.type_ = current_type_;
@ -894,9 +876,23 @@ void TypeCheckVisitor::Visit(VariantExpression* node) {
void TypeCheckVisitor::Visit(ReturnExpression* node) {
Visitor::Visit(node->expression);
if (node->is_from_definition) {
returned_type_ = current_type_;
if (returned_type_.has_value()) {
if (!context_manager_.EqualValues(returned_type_.value(), current_type_)) {
error_handling::HandleTypecheckError("Different returned types", node->base);
}
} else {
returned_type_ = current_type_;
}
all_branches_returned_value_ = true;
} else {
brought_type_ = current_type_;
if (brought_type_.has_value()) {
if (!context_manager_.EqualValues(brought_type_.value(), current_type_)) {
error_handling::HandleTypecheckError("Different brought types", node->base);
}
} else {
brought_type_ = current_type_;
}
all_branches_brought_value_ = true;
}
current_type_ = context_manager_.AddValue(info::type::InternalType::Unit, utils::ValueType::Tmp);

5
tests/test_code.lang
View file

@ -142,5 +142,8 @@ def func : s = {
exec main {
for i in (,0 ,1 ,2 ,3) do func: "abacaba"
; print: ({ bring read: })
; print: ({
if true then bring read: else ()
bring "nothing"
})
}