source: src/AST/Convert.cpp @ 172d9342

//
// Cforall Version 1.0.0 Copyright (C) 2019 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Convert.cpp -- Convert between the new and old syntax trees.
//
// Author           : Thierry Delisle
// Created On       : Thu May 09 15::37::05 2019
// Last Modified By : Andrew Beach
// Last Modified On : Fri May 17 12:13:00 2019
// Update Count     : 3
//

#include "Convert.hpp"

#include "AST/Attribute.hpp"
#include "AST/Decl.hpp"
#include "AST/Expr.hpp"
#include "AST/Init.hpp"
#include "AST/Stmt.hpp"
#include "AST/TypeSubstitution.hpp"

#include "SynTree/Attribute.h"
#include "SynTree/Declaration.h"
#include "SynTree/TypeSubstitution.h"

//================================================================================================
// Utilities
template<template <class...> class C>
struct to {
        template<typename T>
        static auto from( T && v ) -> C< typename T::value_type > {
                C< typename T::value_type > l;
                std::move(std::begin(v), std::end(v), std::back_inserter(l));
                return l;
        }
};

//================================================================================================
class ConverterNewToOld : public ast::Visitor {
public:
        template<typename T>
        T * get() {
                T * ret = strict_dynamic_cast< T * >( node );
                node = nullptr;
                return ret;
        }

private:
        BaseSyntaxNode * node = nullptr;

        // All the visit functions:

        const ast::DeclWithType * visit( const ast::ObjectDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::DeclWithType * visit( const ast::FunctionDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Decl * visit( const ast::StructDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Decl * visit( const ast::UnionDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Decl * visit( const ast::EnumDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Decl * visit( const ast::TraitDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Decl * visit( const ast::TypeDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Decl * visit( const ast::TypedefDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::AsmDecl * visit( const ast::AsmDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::StaticAssertDecl * visit( const ast::StaticAssertDecl * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::CompoundStmt * visit( const ast::CompoundStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::ExprStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::AsmStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::DirectiveStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::IfStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::WhileStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::ForStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::SwitchStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::CaseStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::BranchStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::ReturnStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::ThrowStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::TryStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::CatchStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::FinallyStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::WaitForStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::WithStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::NullStmt * visit( const ast::NullStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::DeclStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Stmt * visit( const ast::ImplicitCtorDtorStmt * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::ApplicationExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::UntypedExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::NameExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::AddressExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::LabelAddressExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::CastExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::KeywordCastExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::VirtualCastExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::UntypedMemberExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::MemberExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::VariableExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::ConstantExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::SizeofExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::AlignofExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::UntypedOffsetofExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::OffsetofExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::OffsetPackExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::LogicalExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::ConditionalExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::CommaExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::TypeExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::AsmExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::ImplicitCopyCtorExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::ConstructorExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::CompoundLiteralExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::RangeExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::UntypedTupleExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::TupleExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::TupleIndexExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::TupleAssignExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::StmtExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::UniqueExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::UntypedInitExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::InitExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::DeletedExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::DefaultArgExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Expr * visit( const ast::GenericExpr * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::VoidType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::BasicType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::PointerType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::ArrayType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::ReferenceType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::QualifiedType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::FunctionType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::StructInstType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::UnionInstType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::EnumInstType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::TraitInstType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::TypeInstType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::TupleType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::TypeofType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::VarArgsType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::ZeroType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::OneType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Type * visit( const ast::GlobalScopeType * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Designation * visit( const ast::Designation * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Init * visit( const ast::SingleInit * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Init * visit( const ast::ListInit * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Init * visit( const ast::ConstructorInit * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::Attribute * visit( const ast::Attribute * node ) override final {
                (void)node;
                return nullptr;
        }

        const ast::TypeSubstitution * visit( const ast::TypeSubstitution * node ) override final {
                (void)node;
                return nullptr;
        }
};

std::list< Declaration * > convert( std::list< ast::ptr< ast::Decl > > && translationUnit ) {
        ConverterNewToOld c;
        std::list< Declaration * > decls;
        for(auto d : translationUnit) {
                d->accept( c );
                decls.emplace_back( c.get<Declaration>() );
                delete d;
        }
        return decls;
}

//================================================================================================

class ConverterOldToNew : public Visitor {
public:
        ast::Decl * decl() {
                return strict_dynamic_cast< ast::Decl * >( node );
        }
private:
        ast::Node * node;

        // Local Utilities:

        template<typename NewT, typename OldT>
        NewT * getAccept1( OldT old ) {
                old->accept(*this);
                return strict_dynamic_cast< NewT * >( node );
        }

#       define GET_ACCEPT_1(child, type) \
                getAccept1< ast::type, decltype( old->child ) >( old->child )

        template<typename NewT, typename OldC>
        std::vector< ast::ptr<NewT> > getAcceptV( OldC& old ) {
                std::vector< ast::ptr<NewT> > ret;
                ret.reserve( old.size() );
                for ( auto a : old ) {
                        a->accept( *this );
                        ret.emplace_back( strict_dynamic_cast< NewT * >(node) );
                }
                return ret;
        }

#       define GET_ACCEPT_V(child, type) \
                getAcceptV< ast::type, decltype( old->child ) >( old->child )

        ast::Label make_label(Label* old) {
                return ast::Label(
                        old->labelled->location,
                        old->name,
                        GET_ACCEPT_V(attributes, Attribute)
                );
        }

        template<template <class...> class C>
        C<ast::Label> make_labels(C<Label> olds) {
                C<ast::Label> ret;
                for (auto oldn : olds) {
                        ret.push_back( make_label( &oldn ) );
                }
                return ret;
        }

#       define GET_LABELS_V(labels) \
                to<std::vector>::from( make_labels( std::move( labels ) ) )

        // Now all the visit functions:

        virtual void visit( ObjectDecl * old ) override final {
                auto decl = new ast::ObjectDecl(
                        old->location,
                        old->name,
                        GET_ACCEPT_1(type, Type),
                        GET_ACCEPT_1(init, Init),
                        { old->get_storageClasses().val },
                        { old->linkage.val },
                        GET_ACCEPT_1(bitfieldWidth, Expr),
                        GET_ACCEPT_V(attributes, Attribute),
                        { old->get_funcSpec().val }
                );
                decl->scopeLevel = old->scopeLevel;
                decl->mangleName = old->mangleName;
                decl->isDeleted  = old->isDeleted;
                decl->uniqueId   = old->uniqueId;
                decl->extension  = old->extension;

                this->node = decl;
        }

        virtual void visit( FunctionDecl * ) override final {

        }

        virtual void visit( StructDecl * old ) override final {
                auto decl = new ast::StructDecl(
                        old->location,
                        old->name,
                        old->kind,
                        GET_ACCEPT_V(attributes, Attribute),
                        { old->linkage.val }
                );
                decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
                decl->body   = old->body;
                decl->params = GET_ACCEPT_V(parameters, TypeDecl);
                decl->members    = GET_ACCEPT_V(members, Decl);
                decl->extension  = old->extension;
                decl->uniqueId   = old->uniqueId;
                decl->storage    = { old->storageClasses.val };

                this->node = decl;
        }

        virtual void visit( UnionDecl * old ) override final {
                auto decl = new ast::UnionDecl(
                        old->location,
                        old->name,
                        GET_ACCEPT_V(attributes, Attribute),
                        { old->linkage.val }
                );
                decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
                decl->body   = old->body;
                decl->params = GET_ACCEPT_V(parameters, TypeDecl);
                decl->members    = GET_ACCEPT_V(members, Decl);
                decl->extension  = old->extension;
                decl->uniqueId   = old->uniqueId;
                decl->storage    = { old->storageClasses.val };

                this->node = decl;
        }

        virtual void visit( EnumDecl * old ) override final {
                auto decl = new ast::UnionDecl(
                        old->location,
                        old->name,
                        GET_ACCEPT_V(attributes, Attribute),
                        { old->linkage.val }
                );
                decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
                decl->body   = old->body;
                decl->params = GET_ACCEPT_V(parameters, TypeDecl);
                decl->members    = GET_ACCEPT_V(members, Decl);
                decl->extension  = old->extension;
                decl->uniqueId   = old->uniqueId;
                decl->storage    = { old->storageClasses.val };

                this->node = decl;
        }

        virtual void visit( TraitDecl * old ) override final {
                auto decl = new ast::UnionDecl(
                        old->location,
                        old->name,
                        GET_ACCEPT_V(attributes, Attribute),
                        { old->linkage.val }
                );
                decl->parent = GET_ACCEPT_1(parent, AggregateDecl);
                decl->body   = old->body;
                decl->params = GET_ACCEPT_V(parameters, TypeDecl);
                decl->members    = GET_ACCEPT_V(members, Decl);
                decl->extension  = old->extension;
                decl->uniqueId   = old->uniqueId;
                decl->storage    = { old->storageClasses.val };

                this->node = decl;
        }

        virtual void visit( TypeDecl * ) override final {

        }

        virtual void visit( TypedefDecl * old ) override final {
                auto decl = new ast::TypedefDecl(
                        old->location,
                        old->name,
                        { old->storageClasses.val },
                        GET_ACCEPT_1(base, Type),
                        { old->linkage.val }
                );
                decl->assertions = GET_ACCEPT_V(assertions, DeclWithType);
                decl->params     = GET_ACCEPT_V(parameters, TypeDecl);
                decl->extension  = old->extension;
                decl->uniqueId   = old->uniqueId;
                decl->storage    = { old->storageClasses.val };

                this->node = decl;
        }

        virtual void visit( AsmDecl * ) override final {

        }

        virtual void visit( StaticAssertDecl * ) override final {

        }

        virtual void visit( CompoundStmt * old ) override final {
                auto stmt = new ast::CompoundStmt(
                        old->location,
                        to<std::list>::from( GET_ACCEPT_V(kids, Stmt) ),
                        GET_LABELS_V(old->labels)
                );

                this->node = stmt;
        }

        virtual void visit( ExprStmt * old ) override final {
                this->node = new ast::ExprStmt(
                        old->location,
                        GET_ACCEPT_1(expr, Expr),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( AsmStmt * old ) override final {
                this->node = new ast::AsmStmt(
                        old->location,
                        old->voltile,
                        GET_ACCEPT_1(instruction, Expr),
                        GET_ACCEPT_V(output, Expr),
                        GET_ACCEPT_V(input, Expr),
                        GET_ACCEPT_V(clobber, ConstantExpr),
                        GET_LABELS_V(old->gotolabels),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( DirectiveStmt * old ) override final {
                this->node = new ast::DirectiveStmt(
                        old->location,
                        old->directive,
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( IfStmt * old ) override final {
                this->node = new ast::IfStmt(
                        old->location,
                        GET_ACCEPT_1(condition, Expr),
                        GET_ACCEPT_1(thenPart, Stmt),
                        GET_ACCEPT_1(elsePart, Stmt),
                        GET_ACCEPT_V(initialization, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( SwitchStmt * old ) override final {
                this->node = new ast::SwitchStmt(
                        old->location,
                        GET_ACCEPT_1(condition, Expr),
                        GET_ACCEPT_V(statements, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( CaseStmt * old ) override final {
                this->node = new ast::CaseStmt(
                        old->location,
                        GET_ACCEPT_1(condition, Expr),
                        GET_ACCEPT_V(stmts, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( WhileStmt * old ) override final {
                this->node = new ast::WhileStmt(
                        old->location,
                        GET_ACCEPT_1(condition, Expr),
                        GET_ACCEPT_1(body, Stmt),
                        GET_ACCEPT_V(initialization, Stmt),
                        old->isDoWhile,
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( ForStmt * old ) override final {
                this->node = new ast::ForStmt(
                        old->location,
                        GET_ACCEPT_V(initialization, Stmt),
                        GET_ACCEPT_1(condition, Expr),
                        GET_ACCEPT_1(increment, Expr),
                        GET_ACCEPT_1(body, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( BranchStmt * old ) override final {
                if (old->computedTarget) {
                        this->node = new ast::BranchStmt(
                                old->location,
                                GET_ACCEPT_1(computedTarget, Expr),
                                GET_LABELS_V(old->labels)
                        );
                } else {
                        ast::BranchStmt::Kind kind;
                        switch (old->type) {
                        #define CASE(n) \
                        case BranchStmt::n: \
                                kind = ast::BranchStmt::n; \
                                break
                        CASE(Goto);
                        CASE(Break);
                        CASE(Continue);
                        CASE(FallThrough);
                        CASE(FallThroughDefault);
                        #undef CASE
                        default:
                                assertf(false, "Invalid BranchStmt::Type %d\n", old->type);
                        }

                        Label label = old->originalTarget;
                        auto stmt = new ast::BranchStmt(
                                old->location,
                                kind,
                                make_label(&label),
                                GET_LABELS_V(old->labels)
                        );
                        stmt->target = make_label(&old->target);
                        this->node = stmt;
                }
        }

        virtual void visit( ReturnStmt * old ) override final {
                this->node = new ast::ReturnStmt(
                        old->location,
                        GET_ACCEPT_1(expr, Expr),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( ThrowStmt * old ) override final {
                ast::ThrowStmt::Kind kind;
                switch (old->kind) {
                case ThrowStmt::Terminate:
                        kind = ast::ThrowStmt::Terminate;
                        break;
                case ThrowStmt::Resume:
                        kind = ast::ThrowStmt::Resume;
                        break;
                default:
                        assertf(false, "Invalid ThrowStmt::Kind %d\n", old->kind);
                }

                this->node = new ast::ThrowStmt(
                        old->location,
                        kind,
                        GET_ACCEPT_1(expr, Expr),
                        GET_ACCEPT_1(target, Expr),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( TryStmt * old ) override final {
                this->node = new ast::TryStmt(
                        old->location,
                        GET_ACCEPT_1(block, CompoundStmt),
                        GET_ACCEPT_V(handlers, CatchStmt),
                        GET_ACCEPT_1(finallyBlock, FinallyStmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( CatchStmt * old ) override final {
                ast::CatchStmt::Kind kind;
                switch (old->kind) {
                case CatchStmt::Terminate:
                        kind = ast::CatchStmt::Terminate;
                        break;
                case CatchStmt::Resume:
                        kind = ast::CatchStmt::Resume;
                        break;
                default:
                        assertf(false, "Invalid CatchStmt::Kind %d\n", old->kind);
                }

                this->node = new ast::CatchStmt(
                        old->location,
                        kind,
                        GET_ACCEPT_1(decl, Decl),
                        GET_ACCEPT_1(cond, Expr),
                        GET_ACCEPT_1(body, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( FinallyStmt * old ) override final {
                this->node = new ast::FinallyStmt(
                        old->location,
                        GET_ACCEPT_1(block, CompoundStmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( WaitForStmt * old ) override final {
                ast::WaitForStmt * stmt = new ast::WaitForStmt(
                        old->location,
                        GET_LABELS_V(old->labels)
                );

                stmt->clauses.reserve( old->clauses.size() );
                for (size_t i = 0 ; i < old->clauses.size() ; ++i) {
                        stmt->clauses.push_back({
                                ast::WaitForStmt::Target{
                                        GET_ACCEPT_1(clauses[i].target.function, Expr),
                                        GET_ACCEPT_V(clauses[i].target.arguments, Expr)
                                },
                                GET_ACCEPT_1(clauses[i].statement, Stmt),
                                GET_ACCEPT_1(clauses[i].condition, Expr)
                        });
                }
                stmt->timeout = {
                        GET_ACCEPT_1(timeout.time, Expr),
                        GET_ACCEPT_1(timeout.statement, Stmt),
                        GET_ACCEPT_1(timeout.condition, Expr),
                };
                stmt->orElse = {
                        GET_ACCEPT_1(timeout.statement, Stmt),
                        GET_ACCEPT_1(timeout.condition, Expr),
                };

                this->node = stmt;
        }

        virtual void visit( WithStmt * old ) override final {
                this->node = new ast::WithStmt(
                        old->location,
                        GET_ACCEPT_V(exprs, Expr),
                        GET_ACCEPT_1(stmt, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( NullStmt * old ) override final {
                this->node = new ast::NullStmt(
                        old->location,
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( DeclStmt * old ) override final {
                this->node = new ast::DeclStmt(
                        old->location,
                        GET_ACCEPT_1(decl, Decl),
                        GET_LABELS_V(old->labels)
                );
        }

        virtual void visit( ImplicitCtorDtorStmt * old ) override final {
                this->node = new ast::ImplicitCtorDtorStmt(
                        old->location,
                        GET_ACCEPT_1(callStmt, Stmt),
                        GET_LABELS_V(old->labels)
                );
        }

        ast::TypeSubstitution * convertTypeSubstitution(const TypeSubstitution * old) {

                ast::TypeSubstitution *rslt = new ast::TypeSubstitution();

                for (decltype(old->begin()) old_i = old->begin(); old_i != old->end(); old_i++) {
                        rslt->add( old_i->first,
                                   getAccept1<ast::Type>(old_i->second) );
                }

                for (decltype(old->beginVar()) old_i = old->beginVar(); old_i != old->endVar(); old_i++) {
                        rslt->addVar( old_i->first,
                                      getAccept1<ast::Expr>(old_i->second) );
                }
        }

        void convertInferUnion(ast::Expr::InferUnion &nwInferred, InferredParams oldInferParams, const std::vector<UniqueId> &oldResnSlots) {
                
                (void) nwInferred;
                (void) oldInferParams;
                (void) oldResnSlots;
                
                // TODO
        }

        ast::Expr * visitBaseExpr(Expression * old, ast::Expr * nw) {

                nw->result = GET_ACCEPT_1(result, Type);
                nw->env    = convertTypeSubstitution(old->env);

                nw->extension = old->extension;
                convertInferUnion(nw->inferred, old->inferParams, old->resnSlots);

                return nw;
        }

        virtual void visit( ApplicationExpr * ) override final {
                // TODO
        }

        virtual void visit( UntypedExpr * ) override final {
                // TODO
        }

        virtual void visit( NameExpr * old ) override final {
                this->node = visitBaseExpr( old,
                        new ast::NameExpr(
                                old->location,
                                old->get_name()
                        )
                );
        }

        virtual void visit( CastExpr * ) override final {
                // TODO ... (rest)
        }

        virtual void visit( KeywordCastExpr * ) override final {

        }

        virtual void visit( VirtualCastExpr * ) override final {

        }

        virtual void visit( AddressExpr * ) override final {

        }

        virtual void visit( LabelAddressExpr * ) override final {

        }

        virtual void visit( UntypedMemberExpr * ) override final {

        }

        virtual void visit( MemberExpr * ) override final {

        }

        virtual void visit( VariableExpr * ) override final {

        }

        virtual void visit( ConstantExpr * ) override final {

        }

        virtual void visit( SizeofExpr * ) override final {

        }

        virtual void visit( AlignofExpr * ) override final {

        }

        virtual void visit( UntypedOffsetofExpr * ) override final {

        }

        virtual void visit( OffsetofExpr * ) override final {

        }

        virtual void visit( OffsetPackExpr * ) override final {

        }

        virtual void visit( LogicalExpr * ) override final {

        }

        virtual void visit( ConditionalExpr * ) override final {

        }

        virtual void visit( CommaExpr * ) override final {

        }

        virtual void visit( TypeExpr * ) override final {

        }

        virtual void visit( AsmExpr * ) override final {

        }

        virtual void visit( ImplicitCopyCtorExpr * ) override final {

        }

        virtual void visit( ConstructorExpr *  ) override final {

        }

        virtual void visit( CompoundLiteralExpr * ) override final {

        }

        virtual void visit( RangeExpr * ) override final {

        }

        virtual void visit( UntypedTupleExpr * ) override final {

        }

        virtual void visit( TupleExpr * ) override final {

        }

        virtual void visit( TupleIndexExpr * ) override final {

        }

        virtual void visit( TupleAssignExpr * ) override final {

        }

        virtual void visit( StmtExpr *  ) override final {

        }

        virtual void visit( UniqueExpr *  ) override final {

        }

        virtual void visit( UntypedInitExpr *  ) override final {

        }

        virtual void visit( InitExpr *  ) override final {

        }

        virtual void visit( DeletedExpr * ) override final {

        }

        virtual void visit( DefaultArgExpr * ) override final {

        }

        virtual void visit( GenericExpr * ) override final {

        }

        virtual void visit( VoidType * ) override final {

        }

        virtual void visit( BasicType * ) override final {

        }

        virtual void visit( PointerType * ) override final {

        }

        virtual void visit( ArrayType * ) override final {

        }

        virtual void visit( ReferenceType * ) override final {

        }

        virtual void visit( QualifiedType * ) override final {

        }

        virtual void visit( FunctionType * ) override final {

        }

        virtual void visit( StructInstType * ) override final {

        }

        virtual void visit( UnionInstType * ) override final {

        }

        virtual void visit( EnumInstType * ) override final {

        }

        virtual void visit( TraitInstType * ) override final {

        }

        virtual void visit( TypeInstType * ) override final {

        }

        virtual void visit( TupleType * ) override final {

        }

        virtual void visit( TypeofType * ) override final {

        }

        virtual void visit( AttrType * ) override final {

        }

        virtual void visit( VarArgsType * ) override final {

        }

        virtual void visit( ZeroType * ) override final {

        }

        virtual void visit( OneType * ) override final {

        }

        virtual void visit( GlobalScopeType * ) override final {

        }

        virtual void visit( Designation * ) override final {

        }

        virtual void visit( SingleInit * ) override final {

        }

        virtual void visit( ListInit * ) override final {

        }

        virtual void visit( ConstructorInit * ) override final {

        }

        virtual void visit( Constant * ) override final {

        }

        virtual void visit( Attribute * ) override final {

        }

        virtual void visit( AttrExpr * ) override final {

                assert( 0 );
        }
};

#undef GET_LABELS_V
#undef GET_ACCEPT_V
#undef GET_ACCEPT_1

std::list< ast::ptr< ast::Decl > > convert( const std::list< Declaration * > && translationUnit ) {
        ConverterOldToNew c;
        std::list< ast::ptr< ast::Decl > > decls;
        for(auto d : translationUnit) {
                d->accept( c );
                decls.emplace_back( c.decl() );
                delete d;
        }
        return decls;
}