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127 lines
3.9 KiB
127 lines
3.9 KiB
/*
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* Copyright (C) 2019, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "aidl_language.h"
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#include "aidl_typenames.h"
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#include "comments.h"
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#include "io_delegate.h"
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#include "logging.h"
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#include "options.h"
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#include <memory>
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#include <string>
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#include <vector>
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struct yy_buffer_state;
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typedef yy_buffer_state* YY_BUFFER_STATE;
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class AidlToken {
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public:
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AidlToken(const std::string& text, android::aidl::Comments comments)
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: text_(text), comments_(std::move(comments)) {}
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~AidlToken() = default;
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AidlToken(const AidlToken&) = delete;
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AidlToken(AidlToken&&) = delete;
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AidlToken& operator=(const AidlToken&) = delete;
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AidlToken& operator=(AidlToken&&) = delete;
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const std::string& GetText() const { return text_; }
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const android::aidl::Comments& GetComments() const { return comments_; }
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template <typename T>
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void Append(T&& text) {
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text_ += std::forward<T>(text);
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}
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private:
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std::string text_;
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android::aidl::Comments comments_;
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};
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using TypeResolver = std::function<bool(const AidlDocument*, AidlTypeSpecifier*)>;
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class Parser {
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public:
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// non-copyable, non-assignable
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Parser(const Parser&) = delete;
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Parser& operator=(const Parser&) = delete;
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~Parser();
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// Parse contents of file |filename|. Should only be called once.
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static std::unique_ptr<Parser> Parse(const std::string& filename,
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const android::aidl::IoDelegate& io_delegate,
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AidlTypenames& typenames);
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void AddError() { error_++; }
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bool HasError() const { return error_ != 0; }
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const std::string& FileName() const { return filename_; }
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void* Scanner() const { return scanner_; }
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// This restricts the grammar to something more reasonable. One alternative
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// would be to support multiple sets of type specifiers in our AST, but then a
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// lot of later code would have to deal with this more complicated type. So,
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// in order to keep the AST simpler, restricting the grammar here.
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//
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// Takes ownership of type_args, modifies type.
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void SetTypeParameters(AidlTypeSpecifier* type,
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std::vector<std::unique_ptr<AidlTypeSpecifier>>* type_args);
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void SetPackage(const std::string& package) { package_ = package; }
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const std::string& Package() const { return package_; }
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void DeferResolution(AidlTypeSpecifier* typespec) {
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unresolved_typespecs_.emplace_back(typespec);
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}
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const vector<AidlTypeSpecifier*>& GetUnresolvedTypespecs() const { return unresolved_typespecs_; }
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bool Resolve(TypeResolver& type_resolver);
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void SetDocument(std::unique_ptr<AidlDocument>&& document) {
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// The parsed document is owned by typenames_. This parser object only has
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// a reference to it.
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document_ = document.get();
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if (!typenames_.AddDocument(std::move(document))) {
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document_ = nullptr;
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AddError();
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}
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}
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const AidlDocument& ParsedDocument() const {
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AIDL_FATAL_IF(HasError(), FileName());
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return *document_;
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}
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private:
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explicit Parser(const std::string& filename, std::string& raw_buffer,
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android::aidl::AidlTypenames& typenames);
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std::string filename_;
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std::string package_;
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AidlTypenames& typenames_;
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void* scanner_ = nullptr;
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YY_BUFFER_STATE buffer_;
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int error_ = 0;
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vector<AidlTypeSpecifier*> unresolved_typespecs_;
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const AidlDocument* document_;
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};
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