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/*
* MRustC - Mutabah's Rust Compiler
* - By John Hodge (Mutabah/thePowersGang)
*
* hir_typeck/expr_visit.cpp
* - Wrapper around HIR typecheck that visits all expressions
*/
#include <hir/hir.hpp>
#include <hir/expr.hpp>
#include <hir/visitor.hpp>
#include "expr_visit.hpp"
#include <hir/expr_state.hpp>
void Typecheck_Code(const typeck::ModuleState& ms, t_args& args, const ::HIR::TypeRef& result_type, ::HIR::ExprPtr& expr) {
if( expr.m_state->stage < ::HIR::ExprState::Stage::Typecheck )
{
//Typecheck_Code_Simple(ms, args, result_type, expr);
Typecheck_Code_CS(ms, args, result_type, expr);
}
}
namespace typeck {
void ModuleState::prepare_from_path(const ::HIR::ItemPath& ip)
{
static Span sp;
ASSERT_BUG(sp, ip.parent, "prepare_from_path with too-short path - " << ip);
struct H {
static const ::HIR::Module& get_mod_for_ip(const ::HIR::Crate& crate, const ::HIR::ItemPath& ip)
{
if( ip.parent )
{
const auto& mod = H::get_mod_for_ip(crate, *ip.parent);
return mod.m_mod_items.at(ip.name)->ent.as_Module();
}
else
{
assert(ip.crate_name);
return (ip.crate_name[0] ? crate.m_ext_crates.at(ip.crate_name).m_data->m_root_module : crate.m_root_module);
}
}
static void add_traits_from_mod(ModuleState& ms, const ::HIR::Module& mod)
{
// In-scope traits.
ms.m_traits.clear();
for(const auto& tp : mod.m_traits)
{
const auto& trait = ms.m_crate.get_trait_by_path(sp, tp);
ms.m_traits.push_back(::std::make_pair( &tp, &trait ));
}
}
};
if( ip.parent->trait && ip.parent->ty )
{
// Trait impl
TODO(sp, "prepare_from_path - Trait impl " << ip);
}
else if( ip.parent->trait )
{
// Trait definition
//const auto& trait_mod = H::get_mod_for_ip(m_crate, *ip.parent->trait->parent);
//const auto& trait = trait_mod.m_mod_items.at(ip.parent->trait->name).ent.as_Trait();
const auto& trait = m_crate.get_trait_by_path(sp, *ip.parent->trait);
const auto& item = trait.m_values.at(ip.name);
TU_MATCH_HDRA( (item), { )
TU_ARMA(Function, e) {
m_item_generics = &e.m_params;
}
TU_ARMA(Constant, e) {
m_item_generics = &e.m_params;
}
TU_ARMA(Static, e) {
m_item_generics = nullptr;
}
}
}
else if( ip.parent->ty )
{
// Inherent impl
TODO(sp, "prepare_from_path - Type impl " << ip);
}
else
{
// Namespace path
const auto& mod = H::get_mod_for_ip(m_crate, *ip.parent);
H::add_traits_from_mod(*this, mod);
const auto& item = mod.m_value_items.at(ip.name)->ent;
m_impl_generics = nullptr;
TU_MATCH_HDRA( (item), { )
TU_ARMA(Constant, e) {
m_item_generics = &e.m_params;
}
TU_ARMA(Static, e) {
//m_item_generics = &e.m_params;
}
TU_ARMA(Function, e) {
m_item_generics = &e.m_params;
}
TU_ARMA(StructConstant, _e) BUG(sp, ip << " is StructConstant");
TU_ARMA(StructConstructor, _e) BUG(sp, ip << " is StructConstructor");
TU_ARMA(Import, _e) BUG(sp, ip << " is Import");
}
}
}
} // namespace typeck
namespace {
class OuterVisitor:
public ::HIR::Visitor
{
::typeck::ModuleState m_ms;
public:
OuterVisitor(::HIR::Crate& crate):
m_ms(crate)
{
}
public:
void visit_module(::HIR::ItemPath p, ::HIR::Module& mod) override
{
m_ms.push_traits(p, mod);
::HIR::Visitor::visit_module(p, mod);
m_ms.pop_traits(mod);
}
// NOTE: This is left here to ensure that any expressions that aren't handled by higher code cause a failure
void visit_expr(::HIR::ExprPtr& exp) override {
BUG(exp->m_span, "Reached expression");
}
void visit_trait(::HIR::ItemPath p, ::HIR::Trait& item) override
{
auto _ = this->m_ms.set_impl_generics(item.m_params);
::HIR::Visitor::visit_trait(p, item);
}
void visit_type_impl(::HIR::TypeImpl& impl) override
{
TRACE_FUNCTION_F("impl " << impl.m_type);
auto _ = this->m_ms.set_impl_generics(impl.m_params);
const auto& mod = this->m_ms.m_crate.get_mod_by_path(Span(), impl.m_src_module);
m_ms.push_traits(impl.m_src_module, mod);
::HIR::Visitor::visit_type_impl(impl);
m_ms.pop_traits(mod);
}
void visit_trait_impl(const ::HIR::SimplePath& trait_path, ::HIR::TraitImpl& impl) override
{
TRACE_FUNCTION_F("impl " << trait_path << " for " << impl.m_type);
auto _ = this->m_ms.set_impl_generics(impl.m_params);
const auto& mod = this->m_ms.m_crate.get_mod_by_path(Span(), impl.m_src_module);
m_ms.push_traits(impl.m_src_module, mod);
m_ms.m_traits.push_back( ::std::make_pair( &trait_path, &this->m_ms.m_crate.get_trait_by_path(Span(), trait_path) ) );
::HIR::Visitor::visit_trait_impl(trait_path, impl);
m_ms.m_traits.pop_back( );
m_ms.pop_traits(mod);
}
void visit_marker_impl(const ::HIR::SimplePath& trait_path, ::HIR::MarkerImpl& impl) override
{
TRACE_FUNCTION_F("impl " << trait_path << " for " << impl.m_type << " { }");
auto _ = this->m_ms.set_impl_generics(impl.m_params);
const auto& mod = this->m_ms.m_crate.get_mod_by_path(Span(), impl.m_src_module);
m_ms.push_traits(impl.m_src_module, mod);
::HIR::Visitor::visit_marker_impl(trait_path, impl);
m_ms.pop_traits(mod);
}
void visit_type(::HIR::TypeRef& ty) override
{
TU_IFLET(::HIR::TypeRef::Data, ty.m_data, Array, e,
this->visit_type( *e.inner );
DEBUG("Array size " << ty);
t_args tmp;
if( e.size ) {
Typecheck_Code( m_ms, tmp, ::HIR::TypeRef(::HIR::CoreType::Usize), *e.size );
}
)
else {
::HIR::Visitor::visit_type(ty);
}
}
// ------
// Code-containing items
// ------
void visit_function(::HIR::ItemPath p, ::HIR::Function& item) override {
auto _ = this->m_ms.set_item_generics(item.m_params);
if( item.m_code )
{
DEBUG("Function code " << p);
Typecheck_Code( m_ms, item.m_args, item.m_return, item.m_code );
}
else
{
DEBUG("Function code " << p << " (none)");
}
}
void visit_static(::HIR::ItemPath p, ::HIR::Static& item) override {
//auto _ = this->m_ms.set_item_generics(item.m_params);
if( item.m_value )
{
DEBUG("Static value " << p);
t_args tmp;
Typecheck_Code(m_ms, tmp, item.m_type, item.m_value);
}
}
void visit_constant(::HIR::ItemPath p, ::HIR::Constant& item) override {
auto _ = this->m_ms.set_item_generics(item.m_params);
if( item.m_value )
{
DEBUG("Const value " << p);
t_args tmp;
Typecheck_Code(m_ms, tmp, item.m_type, item.m_value);
}
}
void visit_enum(::HIR::ItemPath p, ::HIR::Enum& item) override {
auto _ = this->m_ms.set_item_generics(item.m_params);
if( auto* e = item.m_data.opt_Value() )
{
auto enum_type = ::HIR::Enum::get_repr_type(e->repr);
for(auto& var : e->variants)
{
DEBUG("Enum value " << p << " - " << var.name);
if( var.expr )
{
t_args tmp;
Typecheck_Code(m_ms, tmp, enum_type, var.expr);
}
}
}
}
};
}
void Typecheck_Expressions(::HIR::Crate& crate)
{
OuterVisitor visitor { crate };
visitor.visit_crate( crate );
}
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