// Copyright (c) 2020-now by the Zeek Project. See LICENSE for details.

#pragma once

#include <utility>

#include <hilti/ast/attribute.h>
#include <hilti/ast/declaration.h>
#include <hilti/ast/type.h>

namespace hilti::declaration {

/** AST node for a type declaration. */
class Type : public Declaration {
public:
    auto type() const { return child<QualifiedType>(0); }
    auto attributes() const { return child<AttributeSet>(1); }

    bool isOnHeap() const {
        if ( auto* x = attributes() )
            return x->find(hilti::attribute::kind::OnHeap) != nullptr;
        else
            return false;
    }

    /** Shortcut to `type::typeID()` for the declared type. */
    auto typeID() const { return child<QualifiedType>(0)->type()->typeID(); }

    /** Shortcut to `type::cxxID()` for the declared type. */
    auto cxxID() const { return child<QualifiedType>(0)->type()->cxxID(); }

    void setType(ASTContext* ctx, QualifiedType* t) { setChild(ctx, 0, t); }

    void addAttribute(ASTContext* ctx, Attribute* a) { attributes()->add(ctx, a); }

    node::Properties properties() const final {
        auto p = node::Properties{};
        return Declaration::properties() + std::move(p);
    }

    std::string_view displayName() const final { return "type"; }

    static auto create(ASTContext* ctx,
                       ID id,
                       QualifiedType* type,
                       AttributeSet* attrs,
                       declaration::Linkage linkage = Linkage::Private,
                       Meta meta = {}) {
        if ( ! attrs )
            attrs = AttributeSet::create(ctx);

        return ctx->make<Type>(ctx, {type, attrs}, std::move(id), linkage, std::move(meta));
    }

    static auto create(ASTContext* ctx,
                       ID id,
                       QualifiedType* type,
                       declaration::Linkage linkage = Linkage::Private,
                       Meta meta = {}) {
        return create(ctx, std::move(id), type, AttributeSet::create(ctx), linkage, std::move(meta));
    }

protected:
    Type(ASTContext* ctx, Nodes children, ID id, declaration::Linkage linkage, Meta meta)
        : Declaration(ctx, NodeTags, std::move(children), std::move(id), linkage, std::move(meta)) {}

    HILTI_NODE_1(declaration::Type, Declaration, final);
};

} // namespace hilti::declaration
