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Support variable declaration initializer

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This commit is contained in:
Eugen Wissner
2025-08-19 22:58:39 +02:00
parent 569139d44a
commit 0c2a396320
10 changed files with 175 additions and 102 deletions
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43
boot/semantic.cc
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@@ -83,6 +83,16 @@ namespace elna::boot
return "Procedure '" + identifier + "' is expected to return, but does not have a return statement";
}
variable_initializer_error::variable_initializer_error(const char *path, const struct position position)
: error(path, position)
{
}
std::string variable_initializer_error::what() const
{
return "Only one variable can be initialized";
}
type_analysis_visitor::type_analysis_visitor(const char *path)
: error_container(path)
{
@@ -289,7 +299,10 @@ namespace elna::boot
{
declaration->variable_type().accept(this);
this->bag.enter(declaration->identifier.identifier, std::make_shared<variable_info>(this->current_type));
for (const auto& variable_identifier : declaration->identifiers)
{
this->bag.enter(variable_identifier.identifier, std::make_shared<variable_info>(this->current_type));
}
}
void name_analysis_visitor::visit(constant_declaration *definition)
@@ -584,5 +597,33 @@ namespace elna::boot
add_error<already_declared_error>(type->identifier.identifier, this->input_file, type->position());
}
}
for (variable_declaration *const variable : unit->variables)
{
variable->accept(this);
}
for (procedure_declaration *const procedure : unit->procedures)
{
procedure->accept(this);
}
}
void declaration_visitor::visit(variable_declaration *declaration)
{
if (declaration->body != nullptr && declaration->identifiers.size() > 1)
{
add_error<variable_initializer_error>(this->input_file, declaration->position());
}
}
void declaration_visitor::visit(procedure_declaration *definition)
{
if (!definition->body.has_value())
{
return;
}
for (boot::variable_declaration *const variable : definition->body.value().variables())
{
variable->accept(this);
}
}
}