// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#ifndef CARBON_TOOLCHAIN_CHECK_MODIFIERS_H_
#define CARBON_TOOLCHAIN_CHECK_MODIFIERS_H_

#include "toolchain/check/context.h"

namespace Carbon::Check {

// Reports a diagnostic (using `decl_name`) if access control modifiers on this
// are not allowed, and updates the declaration state in `context`.
auto CheckAccessModifiersOnDecl(Context& context, Lex::TokenKind decl_kind)
    -> void;

// Reports a diagnostic (using `decl_kind`) if modifiers on this declaration are
// not in `allowed`. Updates the declaration state in
// `context.decl_state_stack()`.
auto LimitModifiersOnDecl(Context& context, KeywordModifierSet allowed,
                          Lex::TokenKind decl_kind) -> void;

// Like `LimitModifiersOnDecl`, except says which modifiers are forbidden, and a
// `context_string` (and optional `context_node`) specifying the context in
// which those modifiers are forbidden.
auto ForbidModifiersOnDecl(Context& context, KeywordModifierSet forbidden,
                           Lex::TokenKind decl_kind,
                           llvm::StringRef context_string,
                           Parse::NodeId context_node = Parse::NodeId::Invalid)
    -> void;

// Report a diagonostic if `default` and `final` modifiers are used on
// declarations where they are not allowed. Right now they are only allowed
// inside interfaces.
auto RequireDefaultFinalOnlyInInterfaces(Context& context,
                                         Lex::TokenKind decl_kind) -> void;

}  // namespace Carbon::Check

#endif  // CARBON_TOOLCHAIN_CHECK_MODIFIERS_H_