Jiyong Park | e5c4529 | 2020-05-26 19:06:24 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "parser.h" |
Jiyong Park | e5c4529 | 2020-05-26 19:06:24 +0900 | [diff] [blame] | 18 | #include "aidl_language_y-module.h" |
Jiyong Park | 2a7c92b | 2020-07-22 19:12:36 +0900 | [diff] [blame] | 19 | #include "logging.h" |
Jiyong Park | e5c4529 | 2020-05-26 19:06:24 +0900 | [diff] [blame] | 20 | |
| 21 | void yylex_init(void**); |
| 22 | void yylex_destroy(void*); |
| 23 | void yyset_in(FILE* f, void*); |
| 24 | int yyparse(Parser*); |
| 25 | YY_BUFFER_STATE yy_scan_buffer(char*, size_t, void*); |
| 26 | void yy_delete_buffer(YY_BUFFER_STATE, void*); |
| 27 | |
| 28 | std::unique_ptr<Parser> Parser::Parse(const std::string& filename, |
| 29 | const android::aidl::IoDelegate& io_delegate, |
| 30 | AidlTypenames& typenames) { |
| 31 | // Make sure we can read the file first, before trashing previous state. |
| 32 | unique_ptr<string> raw_buffer = io_delegate.GetFileContents(filename); |
| 33 | if (raw_buffer == nullptr) { |
| 34 | AIDL_ERROR(filename) << "Error while opening file for parsing"; |
| 35 | return nullptr; |
| 36 | } |
| 37 | |
| 38 | // We're going to scan this buffer in place, and yacc demands we put two |
| 39 | // nulls at the end. |
| 40 | raw_buffer->append(2u, '\0'); |
| 41 | |
| 42 | std::unique_ptr<Parser> parser(new Parser(filename, *raw_buffer, typenames)); |
| 43 | |
Jiyong Park | 8e79b7f | 2020-07-20 20:52:38 +0900 | [diff] [blame] | 44 | if (yy::parser(parser.get()).parse() != 0 || parser->HasError()) { |
| 45 | return nullptr; |
| 46 | } |
Jiyong Park | e5c4529 | 2020-05-26 19:06:24 +0900 | [diff] [blame] | 47 | |
| 48 | return parser; |
| 49 | } |
| 50 | |
Jiyong Park | e5c4529 | 2020-05-26 19:06:24 +0900 | [diff] [blame] | 51 | bool Parser::Resolve() { |
| 52 | bool success = true; |
| 53 | for (AidlTypeSpecifier* typespec : unresolved_typespecs_) { |
| 54 | if (!typespec->Resolve(typenames_)) { |
| 55 | AIDL_ERROR(typespec) << "Failed to resolve '" << typespec->GetUnresolvedName() << "'"; |
| 56 | success = false; |
| 57 | // don't stop to show more errors if any |
| 58 | } |
| 59 | } |
| 60 | return success; |
| 61 | } |
| 62 | |
| 63 | Parser::Parser(const std::string& filename, std::string& raw_buffer, |
| 64 | android::aidl::AidlTypenames& typenames) |
| 65 | : filename_(filename), typenames_(typenames) { |
| 66 | yylex_init(&scanner_); |
| 67 | buffer_ = yy_scan_buffer(&raw_buffer[0], raw_buffer.length(), scanner_); |
| 68 | } |
| 69 | |
| 70 | Parser::~Parser() { |
| 71 | yy_delete_buffer(buffer_, scanner_); |
| 72 | yylex_destroy(scanner_); |
| 73 | } |