| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ZIRCON_SYSTEM_HOST_FIDL_INCLUDE_FIDL_ORDINALS_H_ |
| #define ZIRCON_SYSTEM_HOST_FIDL_INCLUDE_FIDL_ORDINALS_H_ |
| |
| #include "raw_ast.h" |
| |
| namespace fidl { |
| namespace ordinals { |
| |
| // Returns the Selector. If the Selector attribute is present, the |
| // function returns its value; otherwise, it returns the name parameter. |
| std::string GetSelector(const raw::AttributeList* attributes, |
| SourceLocation name); |
| |
| // Computes the ordinal for this method per the FIDL spec. |
| // |
| // The ordinal value is equal to |
| // *((int32_t *)sha256(library_name + "." + interface_name + "/" + method_name)) & 0x7fffffff; |
| // If |method| has an Selector attribute, that value will be used as the |
| // method_name. |
| raw::Ordinal GetGeneratedOrdinal(const std::vector<StringView>& library_name, |
| const StringView& interface_name, |
| const raw::InterfaceMethod& method); |
| |
| // Retrieves the correct ordinal for this method per the FIDL spec. |
| // |
| // If |method.ordinal| is not null, this method will return |method.ordinal|. |
| // Otherwise, the ordinal value is computed with GetGeneratedOrdinal. |
| raw::Ordinal GetOrdinal(const std::vector<StringView>& library_name, |
| const StringView& interface_name, |
| const raw::InterfaceMethod& method); |
| |
| } // namespace ordinals |
| } // namespace fidl |
| |
| #endif // ZIRCON_SYSTEM_HOST_FIDL_INCLUDE_FIDL_ORDINALS_H_ |
