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Type check if and while conditions

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This commit is contained in:
Eugen Wissner
2024-06-05 19:53:04 +02:00
parent 68149be998
commit 8000f79ecf
6 changed files with 70 additions and 41 deletions
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33
source/semantic.cpp
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@@ -169,6 +169,11 @@ namespace elna::source
literal->data_type = std::dynamic_pointer_cast<type_info>(table->lookup("Boolean"))->type();
}
void type_analysis_visitor::visit(variable_expression *expression)
{
expression->data_type = std::dynamic_pointer_cast<typed_info>(table->lookup(expression->name()))->type();
}
void type_analysis_visitor::visit(unary_expression *expression)
{
empty_visitor::visit(expression);
@@ -272,6 +277,34 @@ namespace elna::source
definition->body().accept(this);
}
void type_analysis_visitor::visit(while_statement *statement)
{
statement->prerequisite().accept(this);
auto condition_type = std::dynamic_pointer_cast<const primitive_type>(statement->prerequisite().data_type);
if (condition_type != nullptr && *condition_type != boolean_type)
{
auto new_error = std::make_unique<type_mismatch>(condition_type,
type_mismatch::operation::condition, this->filename, statement->prerequisite().position());
m_errors.push_back(std::move(new_error));
}
statement->body().accept(this);
}
void type_analysis_visitor::visit(if_statement *statement)
{
statement->prerequisite().accept(this);
auto condition_type = std::dynamic_pointer_cast<const primitive_type>(statement->prerequisite().data_type);
if (condition_type != nullptr && *condition_type != boolean_type)
{
auto new_error = std::make_unique<type_mismatch>(condition_type,
type_mismatch::operation::condition, this->filename, statement->prerequisite().position());
m_errors.push_back(std::move(new_error));
}
statement->body().accept(this);
}
const std::list<std::unique_ptr<error>>& type_analysis_visitor::errors() const noexcept
{
return m_errors;