| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "src/trace_processor/prelude/functions/create_function_internal.h" |
| |
| #include "perfetto/base/status.h" |
| #include "perfetto/ext/base/string_view.h" |
| #include "src/trace_processor/sqlite/sqlite_utils.h" |
| #include "src/trace_processor/util/status_macros.h" |
| |
| namespace perfetto { |
| namespace trace_processor { |
| |
| base::Status ParseFunctionName(base::StringView raw, base::StringView& out) { |
| size_t function_name_end = raw.find('('); |
| if (function_name_end == base::StringView::npos) |
| return base::ErrStatus("unable to find bracket starting argument list"); |
| |
| base::StringView function_name = raw.substr(0, function_name_end); |
| if (!sql_argument::IsValidName(function_name)) { |
| return base::ErrStatus("function name %s is not alphanumeric", |
| function_name.ToStdString().c_str()); |
| } |
| out = function_name; |
| return base::OkStatus(); |
| } |
| |
| base::Status ParsePrototype(base::StringView raw, Prototype& out) { |
| // Examples of function prototypes: |
| // ANDROID_SDK_LEVEL() |
| // STARTUP_SLICE(dur_ns INT) |
| // FIND_NEXT_SLICE_WITH_NAME(ts INT, name STRING) |
| |
| base::StringView function_name; |
| RETURN_IF_ERROR(ParseFunctionName(raw, function_name)); |
| |
| size_t function_name_end = function_name.size(); |
| size_t args_start = function_name_end + 1; |
| size_t args_end = raw.find(')', args_start); |
| if (args_end == base::StringView::npos) |
| return base::ErrStatus("unable to find bracket ending argument list"); |
| |
| base::StringView args_str = raw.substr(args_start, args_end - args_start); |
| RETURN_IF_ERROR(sql_argument::ParseArgumentDefinitions(args_str.ToStdString(), |
| out.arguments)); |
| |
| out.function_name = function_name.ToStdString(); |
| return base::OkStatus(); |
| } |
| |
| base::Status SqliteRetToStatus(sqlite3* db, |
| const std::string& function_name, |
| int ret) { |
| if (ret != SQLITE_ROW && ret != SQLITE_DONE) { |
| return base::ErrStatus("%s: SQLite error while executing function body: %s", |
| function_name.c_str(), sqlite3_errmsg(db)); |
| } |
| return base::OkStatus(); |
| } |
| |
| base::Status MaybeBindArgument(sqlite3_stmt* stmt, |
| const std::string& function_name, |
| const sql_argument::ArgumentDefinition& arg, |
| sqlite3_value* value) { |
| int index = sqlite3_bind_parameter_index(stmt, arg.dollar_name().c_str()); |
| |
| // If the argument is not in the query, this just means its an unused |
| // argument which we can just ignore. |
| if (index == 0) |
| return base::Status(); |
| |
| int ret = sqlite3_bind_value(stmt, index, value); |
| if (ret != SQLITE_OK) { |
| return base::ErrStatus( |
| "%s: SQLite error while binding value to argument %s: %s", |
| function_name.c_str(), arg.name().c_str(), |
| sqlite3_errmsg(sqlite3_db_handle(stmt))); |
| } |
| return base::OkStatus(); |
| } |
| |
| } // namespace trace_processor |
| } // namespace perfetto |