mirror of
https://github.com/RGBCube/serenity
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Everywhere: Move all host tools into the Lagom/Tools subdirectory
This allows us to remove all the add_subdirectory calls from the top level CMakeLists.txt that referred to targets linking LagomCore. Segregating the host tools and Serenity targets helps us get to a place where the main Serenity build can simply use a CMake toolchain file rather than swapping all the compiler/sysroot variables after building host libraries and tools.
This commit is contained in:
Andrew Kaster
Linus Groh
parent
fb15cdcc10
commit
63956b36d0
19 changed files with 18 additions and 22 deletions
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@ -1,6 +0,0 @@
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set(SOURCES
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main.cpp
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)
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add_executable(IPCCompiler ${SOURCES})
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target_link_libraries(IPCCompiler LagomCore)
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@ -1,899 +0,0 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Debug.h>
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#include <AK/Function.h>
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#include <AK/GenericLexer.h>
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#include <AK/HashMap.h>
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#include <AK/SourceGenerator.h>
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#include <AK/StringBuilder.h>
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#include <LibCore/File.h>
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#include <ctype.h>
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#include <stdio.h>
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struct Parameter {
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Vector<String> attributes;
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String type;
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String name;
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};
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static String pascal_case(String const& identifier)
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{
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StringBuilder builder;
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bool was_new_word = true;
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for (auto ch : identifier) {
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if (ch == '_') {
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was_new_word = true;
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continue;
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}
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if (was_new_word) {
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builder.append(toupper(ch));
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was_new_word = false;
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} else
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builder.append(ch);
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}
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return builder.to_string();
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}
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struct Message {
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String name;
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bool is_synchronous { false };
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Vector<Parameter> inputs;
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Vector<Parameter> outputs;
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String response_name() const
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{
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StringBuilder builder;
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builder.append(pascal_case(name));
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builder.append("Response");
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return builder.to_string();
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}
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};
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struct Endpoint {
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Vector<String> includes;
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String name;
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u32 magic;
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Vector<Message> messages;
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};
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static bool is_primitive_type(String const& type)
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{
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return type.is_one_of("u8", "i8", "u16", "i16", "u32", "i32", "u64", "i64", "bool", "double", "float", "int", "unsigned", "unsigned int");
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}
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static String message_name(String const& endpoint, String& message, bool is_response)
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{
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StringBuilder builder;
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builder.append("Messages::");
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builder.append(endpoint);
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builder.append("::");
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builder.append(pascal_case(message));
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if (is_response)
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builder.append("Response");
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return builder.to_string();
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}
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int main(int argc, char** argv)
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{
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if (argc != 2) {
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outln("usage: {} <IPC endpoint definition file>", argv[0]);
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return 0;
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}
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auto file = Core::File::construct(argv[1]);
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if (!file->open(Core::OpenMode::ReadOnly)) {
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warnln("Error: Cannot open {}: {}", argv[1], file->error_string());
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return 1;
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}
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auto file_contents = file->read_all();
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GenericLexer lexer(file_contents);
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Vector<Endpoint> endpoints;
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auto assert_specific = [&](char ch) {
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if (lexer.peek() != ch)
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warnln("assert_specific: wanted '{}', but got '{}' at index {}", ch, lexer.peek(), lexer.tell());
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bool saw_expected = lexer.consume_specific(ch);
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VERIFY(saw_expected);
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};
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auto consume_whitespace = [&] {
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lexer.ignore_while([](char ch) { return isspace(ch); });
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if (lexer.peek() == '/' && lexer.peek(1) == '/')
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lexer.ignore_until([](char ch) { return ch == '\n'; });
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};
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auto parse_parameter = [&](Vector<Parameter>& storage) {
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for (;;) {
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Parameter parameter;
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consume_whitespace();
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if (lexer.peek() == ')')
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break;
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if (lexer.consume_specific('[')) {
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for (;;) {
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if (lexer.consume_specific(']')) {
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consume_whitespace();
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break;
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}
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if (lexer.consume_specific(',')) {
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consume_whitespace();
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}
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auto attribute = lexer.consume_until([](char ch) { return ch == ']' || ch == ','; });
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parameter.attributes.append(attribute);
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consume_whitespace();
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}
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}
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parameter.type = lexer.consume_until([](char ch) { return isspace(ch); });
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consume_whitespace();
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parameter.name = lexer.consume_until([](char ch) { return isspace(ch) || ch == ',' || ch == ')'; });
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consume_whitespace();
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storage.append(move(parameter));
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if (lexer.consume_specific(','))
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continue;
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if (lexer.peek() == ')')
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break;
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}
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};
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auto parse_parameters = [&](Vector<Parameter>& storage) {
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for (;;) {
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consume_whitespace();
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parse_parameter(storage);
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consume_whitespace();
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if (lexer.consume_specific(','))
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continue;
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if (lexer.peek() == ')')
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break;
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}
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};
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auto parse_message = [&] {
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Message message;
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consume_whitespace();
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message.name = lexer.consume_until([](char ch) { return isspace(ch) || ch == '('; });
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consume_whitespace();
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assert_specific('(');
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parse_parameters(message.inputs);
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assert_specific(')');
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consume_whitespace();
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assert_specific('=');
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auto type = lexer.consume();
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if (type == '>')
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message.is_synchronous = true;
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else if (type == '|')
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message.is_synchronous = false;
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else
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VERIFY_NOT_REACHED();
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consume_whitespace();
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if (message.is_synchronous) {
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assert_specific('(');
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parse_parameters(message.outputs);
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assert_specific(')');
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}
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consume_whitespace();
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endpoints.last().messages.append(move(message));
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};
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auto parse_messages = [&] {
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for (;;) {
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consume_whitespace();
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if (lexer.peek() == '}')
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break;
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parse_message();
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consume_whitespace();
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}
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};
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auto parse_include = [&] {
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String include;
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consume_whitespace();
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include = lexer.consume_while([](char ch) { return ch != '\n'; });
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consume_whitespace();
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endpoints.last().includes.append(move(include));
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};
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auto parse_includes = [&] {
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for (;;) {
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consume_whitespace();
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if (lexer.peek() != '#')
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break;
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parse_include();
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consume_whitespace();
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}
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};
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auto parse_endpoint = [&] {
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endpoints.empend();
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consume_whitespace();
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parse_includes();
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consume_whitespace();
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lexer.consume_specific("endpoint");
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consume_whitespace();
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endpoints.last().name = lexer.consume_while([](char ch) { return !isspace(ch); });
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endpoints.last().magic = Traits<String>::hash(endpoints.last().name);
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consume_whitespace();
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if (lexer.peek() == '[') {
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// This only supports a single parameter for now, and adding multiple
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// endpoint parameter support is left as an exercise for the reader. :^)
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lexer.consume_specific('[');
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consume_whitespace();
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auto parameter = lexer.consume_while([](char ch) { return !isspace(ch) && ch != '='; });
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consume_whitespace();
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assert_specific('=');
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consume_whitespace();
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if (parameter == "magic") {
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// "magic" overwrites the default magic with a hardcoded one.
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auto magic_string = lexer.consume_while([](char ch) { return !isspace(ch) && ch != ']'; });
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endpoints.last().magic = magic_string.to_uint().value();
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} else {
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warnln("parse_endpoint: unknown parameter '{}' passed", parameter);
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VERIFY_NOT_REACHED();
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}
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assert_specific(']');
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consume_whitespace();
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}
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assert_specific('{');
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parse_messages();
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assert_specific('}');
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consume_whitespace();
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};
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while (lexer.tell() < file_contents.size())
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parse_endpoint();
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StringBuilder builder;
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SourceGenerator generator { builder };
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generator.append("#pragma once\n");
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// This must occur before LibIPC/Decoder.h
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for (auto& endpoint : endpoints) {
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for (auto& include : endpoint.includes) {
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generator.append(include);
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generator.append("\n");
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}
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}
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generator.append(R"~~~(#include <AK/MemoryStream.h>
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#include <AK/OwnPtr.h>
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#include <AK/Result.h>
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#include <AK/Utf8View.h>
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#include <LibIPC/Connection.h>
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#include <LibIPC/Decoder.h>
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#include <LibIPC/Dictionary.h>
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#include <LibIPC/Encoder.h>
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#include <LibIPC/File.h>
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#include <LibIPC/Message.h>
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#include <LibIPC/Stub.h>
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#ifdef __clang__
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdefaulted-function-deleted"
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#endif
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)~~~");
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for (auto& endpoint : endpoints) {
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auto endpoint_generator = generator.fork();
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endpoint_generator.set("endpoint.name", endpoint.name);
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endpoint_generator.set("endpoint.magic", String::number(endpoint.magic));
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endpoint_generator.append(R"~~~(
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namespace Messages::@endpoint.name@ {
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)~~~");
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HashMap<String, int> message_ids;
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endpoint_generator.append(R"~~~(
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enum class MessageID : i32 {
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)~~~");
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for (auto& message : endpoint.messages) {
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auto message_generator = endpoint_generator.fork();
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message_ids.set(message.name, message_ids.size() + 1);
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message_generator.set("message.name", message.name);
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message_generator.set("message.pascal_name", pascal_case(message.name));
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message_generator.set("message.id", String::number(message_ids.size()));
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message_generator.append(R"~~~(
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@message.pascal_name@ = @message.id@,
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)~~~");
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if (message.is_synchronous) {
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message_ids.set(message.response_name(), message_ids.size() + 1);
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message_generator.set("message.name", message.response_name());
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message_generator.set("message.pascal_name", pascal_case(message.response_name()));
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message_generator.set("message.id", String::number(message_ids.size()));
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message_generator.append(R"~~~(
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@message.pascal_name@ = @message.id@,
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)~~~");
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}
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}
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endpoint_generator.append(R"~~~(
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};
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)~~~");
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auto constructor_for_message = [&](const String& name, const Vector<Parameter>& parameters) {
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StringBuilder builder;
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builder.append(name);
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if (parameters.is_empty()) {
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builder.append("() {}");
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return builder.to_string();
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}
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builder.append('(');
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for (size_t i = 0; i < parameters.size(); ++i) {
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auto& parameter = parameters[i];
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builder.append(parameter.type);
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builder.append(" ");
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builder.append(parameter.name);
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if (i != parameters.size() - 1)
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builder.append(", ");
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}
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builder.append(") : ");
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for (size_t i = 0; i < parameters.size(); ++i) {
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auto& parameter = parameters[i];
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builder.append("m_");
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builder.append(parameter.name);
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builder.append("(move(");
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builder.append(parameter.name);
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builder.append("))");
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if (i != parameters.size() - 1)
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builder.append(", ");
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}
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builder.append(" {}");
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return builder.to_string();
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};
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auto do_message = [&](const String& name, const Vector<Parameter>& parameters, const String& response_type = {}) {
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auto message_generator = endpoint_generator.fork();
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auto pascal_name = pascal_case(name);
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message_generator.set("message.name", name);
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message_generator.set("message.pascal_name", pascal_name);
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message_generator.set("message.response_type", response_type);
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message_generator.set("message.constructor", constructor_for_message(pascal_name, parameters));
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message_generator.append(R"~~~(
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class @message.pascal_name@ final : public IPC::Message {
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public:
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)~~~");
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if (!response_type.is_null())
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message_generator.append(R"~~~(
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typedef class @message.response_type@ ResponseType;
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)~~~");
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message_generator.append(R"~~~(
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@message.pascal_name@(decltype(nullptr)) : m_ipc_message_valid(false) { }
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@message.pascal_name@(@message.pascal_name@ const&) = default;
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@message.pascal_name@(@message.pascal_name@&&) = default;
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@message.pascal_name@& operator=(@message.pascal_name@ const&) = default;
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@message.constructor@
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virtual ~@message.pascal_name@() override {}
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virtual u32 endpoint_magic() const override { return @endpoint.magic@; }
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virtual i32 message_id() const override { return (int)MessageID::@message.pascal_name@; }
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static i32 static_message_id() { return (int)MessageID::@message.pascal_name@; }
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virtual const char* message_name() const override { return "@endpoint.name@::@message.pascal_name@"; }
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static OwnPtr<@message.pascal_name@> decode(InputMemoryStream& stream, [[maybe_unused]] int sockfd)
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{
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IPC::Decoder decoder { stream, sockfd };
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)~~~");
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for (auto& parameter : parameters) {
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auto parameter_generator = message_generator.fork();
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parameter_generator.set("parameter.type", parameter.type);
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parameter_generator.set("parameter.name", parameter.name);
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if (parameter.type == "bool")
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parameter_generator.set("parameter.initial_value", "false");
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else
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parameter_generator.set("parameter.initial_value", "{}");
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parameter_generator.append(R"~~~(
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@parameter.type@ @parameter.name@ = @parameter.initial_value@;
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if (!decoder.decode(@parameter.name@))
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return {};
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)~~~");
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|
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if (parameter.attributes.contains_slow("UTF8")) {
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parameter_generator.append(R"~~~(
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if (!Utf8View(@parameter.name@).validate())
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return {};
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)~~~");
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||||
}
|
||||
}
|
||||
|
||||
StringBuilder builder;
|
||||
for (size_t i = 0; i < parameters.size(); ++i) {
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auto& parameter = parameters[i];
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builder.append("move(");
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builder.append(parameter.name);
|
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builder.append(")");
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if (i != parameters.size() - 1)
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builder.append(", ");
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}
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message_generator.set("message.constructor_call_parameters", builder.build());
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message_generator.append(R"~~~(
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return make<@message.pascal_name@>(@message.constructor_call_parameters@);
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}
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)~~~");
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message_generator.append(R"~~~(
|
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virtual bool valid() const { return m_ipc_message_valid; }
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|
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virtual IPC::MessageBuffer encode() const override
|
||||
{
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VERIFY(valid());
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|
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IPC::MessageBuffer buffer;
|
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IPC::Encoder stream(buffer);
|
||||
stream << endpoint_magic();
|
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stream << (int)MessageID::@message.pascal_name@;
|
||||
)~~~");
|
||||
|
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for (auto& parameter : parameters) {
|
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auto parameter_generator = message_generator.fork();
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|
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parameter_generator.set("parameter.name", parameter.name);
|
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parameter_generator.append(R"~~~(
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stream << m_@parameter.name@;
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)~~~");
|
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}
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|
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message_generator.append(R"~~~(
|
||||
return buffer;
|
||||
}
|
||||
)~~~");
|
||||
|
||||
for (auto& parameter : parameters) {
|
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auto parameter_generator = message_generator.fork();
|
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parameter_generator.set("parameter.type", parameter.type);
|
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parameter_generator.set("parameter.name", parameter.name);
|
||||
parameter_generator.append(R"~~~(
|
||||
const @parameter.type@& @parameter.name@() const { return m_@parameter.name@; }
|
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@parameter.type@ take_@parameter.name@() { return move(m_@parameter.name@); }
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)~~~");
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}
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|
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message_generator.append(R"~~~(
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private:
|
||||
bool m_ipc_message_valid { true };
|
||||
)~~~");
|
||||
|
||||
for (auto& parameter : parameters) {
|
||||
auto parameter_generator = message_generator.fork();
|
||||
parameter_generator.set("parameter.type", parameter.type);
|
||||
parameter_generator.set("parameter.name", parameter.name);
|
||||
parameter_generator.append(R"~~~(
|
||||
@parameter.type@ m_@parameter.name@;
|
||||
)~~~");
|
||||
}
|
||||
|
||||
message_generator.append(R"~~~(
|
||||
};
|
||||
)~~~");
|
||||
};
|
||||
for (auto& message : endpoint.messages) {
|
||||
String response_name;
|
||||
if (message.is_synchronous) {
|
||||
response_name = message.response_name();
|
||||
do_message(response_name, message.outputs);
|
||||
}
|
||||
do_message(message.name, message.inputs, response_name);
|
||||
}
|
||||
|
||||
endpoint_generator.append(R"~~~(
|
||||
} // namespace Messages::@endpoint.name@
|
||||
)~~~");
|
||||
|
||||
endpoint_generator.append(R"~~~(
|
||||
template<typename LocalEndpoint, typename PeerEndpoint>
|
||||
class @endpoint.name@Proxy {
|
||||
public:
|
||||
// Used to disambiguate the constructor call.
|
||||
struct Tag { };
|
||||
|
||||
@endpoint.name@Proxy(IPC::Connection<LocalEndpoint, PeerEndpoint>& connection, Tag)
|
||||
: m_connection(connection)
|
||||
{ }
|
||||
)~~~");
|
||||
|
||||
for (auto& message : endpoint.messages) {
|
||||
auto message_generator = endpoint_generator.fork();
|
||||
|
||||
auto do_implement_proxy = [&](String const& name, Vector<Parameter> const& parameters, bool is_synchronous, bool is_try) {
|
||||
String return_type = "void";
|
||||
if (is_synchronous) {
|
||||
if (message.outputs.size() == 1)
|
||||
return_type = message.outputs[0].type;
|
||||
else if (!message.outputs.is_empty())
|
||||
return_type = message_name(endpoint.name, message.name, true);
|
||||
}
|
||||
String inner_return_type = return_type;
|
||||
if (is_try) {
|
||||
StringBuilder builder;
|
||||
builder.append("Result<");
|
||||
builder.append(return_type);
|
||||
builder.append(", IPC::ErrorCode>");
|
||||
return_type = builder.to_string();
|
||||
}
|
||||
message_generator.set("message.name", message.name);
|
||||
message_generator.set("message.pascal_name", pascal_case(message.name));
|
||||
message_generator.set("message.complex_return_type", return_type);
|
||||
message_generator.set("async_prefix_maybe", is_synchronous ? "" : "async_");
|
||||
message_generator.set("try_prefix_maybe", is_try ? "try_" : "");
|
||||
|
||||
message_generator.set("handler_name", name);
|
||||
message_generator.append(R"~~~(
|
||||
@message.complex_return_type@ @try_prefix_maybe@@async_prefix_maybe@@handler_name@()~~~");
|
||||
|
||||
for (size_t i = 0; i < parameters.size(); ++i) {
|
||||
auto& parameter = parameters[i];
|
||||
auto argument_generator = message_generator.fork();
|
||||
argument_generator.set("argument.type", parameter.type);
|
||||
argument_generator.set("argument.name", parameter.name);
|
||||
argument_generator.append("@argument.type@ @argument.name@");
|
||||
if (i != parameters.size() - 1)
|
||||
argument_generator.append(", ");
|
||||
}
|
||||
|
||||
message_generator.append(") {");
|
||||
|
||||
if (is_synchronous && !is_try) {
|
||||
if (return_type != "void") {
|
||||
message_generator.append(R"~~~(
|
||||
return )~~~");
|
||||
if (message.outputs.size() != 1)
|
||||
message_generator.append("move(*");
|
||||
} else {
|
||||
message_generator.append(R"~~~(
|
||||
)~~~");
|
||||
}
|
||||
|
||||
message_generator.append("m_connection.template send_sync<Messages::@endpoint.name@::@message.pascal_name@>(");
|
||||
} else if (is_try) {
|
||||
message_generator.append(R"~~~(
|
||||
auto result = m_connection.template send_sync_but_allow_failure<Messages::@endpoint.name@::@message.pascal_name@>()~~~");
|
||||
} else {
|
||||
message_generator.append(R"~~~(
|
||||
m_connection.post_message(Messages::@endpoint.name@::@message.pascal_name@ { )~~~");
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < parameters.size(); ++i) {
|
||||
auto& parameter = parameters[i];
|
||||
auto argument_generator = message_generator.fork();
|
||||
argument_generator.set("argument.name", parameter.name);
|
||||
if (is_primitive_type(parameters[i].type))
|
||||
argument_generator.append("@argument.name@");
|
||||
else
|
||||
argument_generator.append("move(@argument.name@)");
|
||||
if (i != parameters.size() - 1)
|
||||
argument_generator.append(", ");
|
||||
}
|
||||
|
||||
if (is_synchronous && !is_try) {
|
||||
if (return_type != "void") {
|
||||
message_generator.append(")");
|
||||
}
|
||||
|
||||
if (message.outputs.size() == 1) {
|
||||
message_generator.append("->take_");
|
||||
message_generator.append(message.outputs[0].name);
|
||||
message_generator.append("()");
|
||||
} else
|
||||
message_generator.append(")");
|
||||
|
||||
message_generator.append(";");
|
||||
} else if (is_try) {
|
||||
message_generator.append(R"~~~();
|
||||
if (!result)
|
||||
return IPC::ErrorCode::PeerDisconnected;
|
||||
)~~~");
|
||||
if (inner_return_type != "void") {
|
||||
message_generator.append(R"~~~(
|
||||
return move(*result);
|
||||
)~~~");
|
||||
} else {
|
||||
message_generator.append(R"~~~(
|
||||
return { };
|
||||
)~~~");
|
||||
}
|
||||
} else {
|
||||
message_generator.append(R"~~~( });
|
||||
)~~~");
|
||||
}
|
||||
|
||||
message_generator.append(R"~~~(
|
||||
}
|
||||
)~~~");
|
||||
};
|
||||
|
||||
do_implement_proxy(message.name, message.inputs, message.is_synchronous, false);
|
||||
if (message.is_synchronous) {
|
||||
do_implement_proxy(message.name, message.inputs, false, false);
|
||||
do_implement_proxy(message.name, message.inputs, true, true);
|
||||
}
|
||||
}
|
||||
|
||||
endpoint_generator.append(R"~~~(
|
||||
private:
|
||||
IPC::Connection<LocalEndpoint, PeerEndpoint>& m_connection;
|
||||
};
|
||||
)~~~");
|
||||
|
||||
endpoint_generator.append(R"~~~(
|
||||
template<typename LocalEndpoint, typename PeerEndpoint>
|
||||
class @endpoint.name@Proxy;
|
||||
class @endpoint.name@Stub;
|
||||
|
||||
class @endpoint.name@Endpoint {
|
||||
public:
|
||||
template<typename LocalEndpoint>
|
||||
using Proxy = @endpoint.name@Proxy<LocalEndpoint, @endpoint.name@Endpoint>;
|
||||
using Stub = @endpoint.name@Stub;
|
||||
|
||||
static u32 static_magic() { return @endpoint.magic@; }
|
||||
|
||||
static OwnPtr<IPC::Message> decode_message(ReadonlyBytes buffer, [[maybe_unused]] int sockfd)
|
||||
{
|
||||
InputMemoryStream stream { buffer };
|
||||
u32 message_endpoint_magic = 0;
|
||||
stream >> message_endpoint_magic;
|
||||
if (stream.handle_any_error()) {
|
||||
)~~~");
|
||||
if constexpr (GENERATE_DEBUG) {
|
||||
endpoint_generator.append(R"~~~(
|
||||
dbgln("Failed to read message endpoint magic");
|
||||
)~~~");
|
||||
}
|
||||
endpoint_generator.append(R"~~~(
|
||||
return {};
|
||||
}
|
||||
|
||||
if (message_endpoint_magic != @endpoint.magic@) {
|
||||
)~~~");
|
||||
if constexpr (GENERATE_DEBUG) {
|
||||
endpoint_generator.append(R"~~~(
|
||||
dbgln("@endpoint.name@: Endpoint magic number message_endpoint_magic != @endpoint.magic@, not my message! (the other endpoint may have handled it)");
|
||||
)~~~");
|
||||
}
|
||||
endpoint_generator.append(R"~~~(
|
||||
return {};
|
||||
}
|
||||
|
||||
i32 message_id = 0;
|
||||
stream >> message_id;
|
||||
if (stream.handle_any_error()) {
|
||||
)~~~");
|
||||
if constexpr (GENERATE_DEBUG) {
|
||||
endpoint_generator.append(R"~~~(
|
||||
dbgln("Failed to read message ID");
|
||||
)~~~");
|
||||
}
|
||||
endpoint_generator.append(R"~~~(
|
||||
return {};
|
||||
}
|
||||
|
||||
OwnPtr<IPC::Message> message;
|
||||
switch (message_id) {
|
||||
)~~~");
|
||||
|
||||
for (auto& message : endpoint.messages) {
|
||||
auto do_decode_message = [&](const String& name) {
|
||||
auto message_generator = endpoint_generator.fork();
|
||||
|
||||
message_generator.set("message.name", name);
|
||||
message_generator.set("message.pascal_name", pascal_case(name));
|
||||
|
||||
message_generator.append(R"~~~(
|
||||
case (int)Messages::@endpoint.name@::MessageID::@message.pascal_name@:
|
||||
message = Messages::@endpoint.name@::@message.pascal_name@::decode(stream, sockfd);
|
||||
break;
|
||||
)~~~");
|
||||
};
|
||||
|
||||
do_decode_message(message.name);
|
||||
if (message.is_synchronous)
|
||||
do_decode_message(message.response_name());
|
||||
}
|
||||
|
||||
endpoint_generator.append(R"~~~(
|
||||
default:
|
||||
)~~~");
|
||||
if constexpr (GENERATE_DEBUG) {
|
||||
endpoint_generator.append(R"~~~(
|
||||
dbgln("Failed to decode @endpoint.name@.({})", message_id);
|
||||
)~~~");
|
||||
}
|
||||
endpoint_generator.append(R"~~~(
|
||||
return {};
|
||||
}
|
||||
|
||||
if (stream.handle_any_error()) {
|
||||
)~~~");
|
||||
if constexpr (GENERATE_DEBUG) {
|
||||
endpoint_generator.append(R"~~~(
|
||||
dbgln("Failed to read the message");
|
||||
)~~~");
|
||||
}
|
||||
endpoint_generator.append(R"~~~(
|
||||
return {};
|
||||
}
|
||||
|
||||
return message;
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
class @endpoint.name@Stub : public IPC::Stub {
|
||||
public:
|
||||
@endpoint.name@Stub() { }
|
||||
virtual ~@endpoint.name@Stub() override { }
|
||||
|
||||
virtual u32 magic() const override { return @endpoint.magic@; }
|
||||
virtual String name() const override { return "@endpoint.name@"; }
|
||||
|
||||
virtual OwnPtr<IPC::MessageBuffer> handle(const IPC::Message& message) override
|
||||
{
|
||||
switch (message.message_id()) {
|
||||
)~~~");
|
||||
for (auto& message : endpoint.messages) {
|
||||
auto do_handle_message = [&](String const& name, Vector<Parameter> const& parameters, bool returns_something) {
|
||||
auto message_generator = endpoint_generator.fork();
|
||||
|
||||
StringBuilder argument_generator;
|
||||
for (size_t i = 0; i < parameters.size(); ++i) {
|
||||
auto& parameter = parameters[i];
|
||||
argument_generator.append("request.");
|
||||
argument_generator.append(parameter.name);
|
||||
argument_generator.append("()");
|
||||
if (i != parameters.size() - 1)
|
||||
argument_generator.append(", ");
|
||||
}
|
||||
|
||||
message_generator.set("message.pascal_name", pascal_case(name));
|
||||
message_generator.set("message.response_type", pascal_case(message.response_name()));
|
||||
message_generator.set("handler_name", name);
|
||||
message_generator.set("arguments", argument_generator.to_string());
|
||||
message_generator.append(R"~~~(
|
||||
case (int)Messages::@endpoint.name@::MessageID::@message.pascal_name@: {
|
||||
)~~~");
|
||||
if (returns_something) {
|
||||
if (message.outputs.is_empty()) {
|
||||
message_generator.append(R"~~~(
|
||||
[[maybe_unused]] auto& request = static_cast<const Messages::@endpoint.name@::@message.pascal_name@&>(message);
|
||||
@handler_name@(@arguments@);
|
||||
auto response = Messages::@endpoint.name@::@message.response_type@ { };
|
||||
return make<IPC::MessageBuffer>(response.encode());
|
||||
)~~~");
|
||||
} else {
|
||||
message_generator.append(R"~~~(
|
||||
[[maybe_unused]] auto& request = static_cast<const Messages::@endpoint.name@::@message.pascal_name@&>(message);
|
||||
auto response = @handler_name@(@arguments@);
|
||||
if (!response.valid())
|
||||
return {};
|
||||
return make<IPC::MessageBuffer>(response.encode());
|
||||
)~~~");
|
||||
}
|
||||
} else {
|
||||
message_generator.append(R"~~~(
|
||||
[[maybe_unused]] auto& request = static_cast<const Messages::@endpoint.name@::@message.pascal_name@&>(message);
|
||||
@handler_name@(@arguments@);
|
||||
return {};
|
||||
)~~~");
|
||||
}
|
||||
message_generator.append(R"~~~(
|
||||
}
|
||||
)~~~");
|
||||
};
|
||||
do_handle_message(message.name, message.inputs, message.is_synchronous);
|
||||
}
|
||||
endpoint_generator.append(R"~~~(
|
||||
default:
|
||||
return {};
|
||||
}
|
||||
}
|
||||
)~~~");
|
||||
|
||||
for (auto& message : endpoint.messages) {
|
||||
auto message_generator = endpoint_generator.fork();
|
||||
|
||||
auto do_handle_message_decl = [&](String const& name, Vector<Parameter> const& parameters, bool is_response) {
|
||||
String return_type = "void";
|
||||
if (message.is_synchronous && !message.outputs.is_empty() && !is_response)
|
||||
return_type = message_name(endpoint.name, message.name, true);
|
||||
message_generator.set("message.complex_return_type", return_type);
|
||||
|
||||
message_generator.set("handler_name", name);
|
||||
message_generator.append(R"~~~(
|
||||
virtual @message.complex_return_type@ @handler_name@()~~~");
|
||||
|
||||
auto make_argument_type = [](String const& type) {
|
||||
StringBuilder builder;
|
||||
|
||||
bool const_ref = !is_primitive_type(type);
|
||||
|
||||
builder.append(type);
|
||||
if (const_ref)
|
||||
builder.append(" const&");
|
||||
|
||||
return builder.to_string();
|
||||
};
|
||||
|
||||
for (size_t i = 0; i < parameters.size(); ++i) {
|
||||
auto& parameter = parameters[i];
|
||||
auto argument_generator = message_generator.fork();
|
||||
argument_generator.set("argument.type", make_argument_type(parameter.type));
|
||||
argument_generator.set("argument.name", parameter.name);
|
||||
argument_generator.append("[[maybe_unused]] @argument.type@ @argument.name@");
|
||||
if (i != parameters.size() - 1)
|
||||
argument_generator.append(", ");
|
||||
}
|
||||
|
||||
if (is_response) {
|
||||
message_generator.append(R"~~~() { };
|
||||
)~~~");
|
||||
} else {
|
||||
message_generator.append(R"~~~() = 0;
|
||||
)~~~");
|
||||
}
|
||||
};
|
||||
|
||||
do_handle_message_decl(message.name, message.inputs, false);
|
||||
}
|
||||
|
||||
endpoint_generator.append(R"~~~(
|
||||
private:
|
||||
};
|
||||
|
||||
#ifdef __clang__
|
||||
#pragma clang diagnostic pop
|
||||
#endif
|
||||
)~~~");
|
||||
}
|
||||
|
||||
outln("{}", generator.as_string_view());
|
||||
|
||||
if constexpr (GENERATE_DEBUG) {
|
||||
for (auto& endpoint : endpoints) {
|
||||
warnln("Endpoint '{}' (magic: {})", endpoint.name, endpoint.magic);
|
||||
for (auto& message : endpoint.messages) {
|
||||
warnln(" Message: '{}'", message.name);
|
||||
warnln(" Sync: {}", message.is_synchronous);
|
||||
warnln(" Inputs:");
|
||||
for (auto& parameter : message.inputs)
|
||||
warnln(" Parameter: {} ({})", parameter.name, parameter.type);
|
||||
if (message.inputs.is_empty())
|
||||
warnln(" (none)");
|
||||
if (message.is_synchronous) {
|
||||
warnln(" Outputs:");
|
||||
for (auto& parameter : message.outputs)
|
||||
warnln(" Parameter: {} ({})", parameter.name, parameter.type);
|
||||
if (message.outputs.is_empty())
|
||||
warnln(" (none)");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1,6 +0,0 @@
|
|||
set(SOURCES
|
||||
main.cpp
|
||||
)
|
||||
|
||||
add_executable(StateMachineGenerator ${SOURCES})
|
||||
target_link_libraries(StateMachineGenerator LagomCore)
|
||||
|
|
@ -1,451 +0,0 @@
|
|||
/*
|
||||
* Copyright (c) 2021, Daniel Bertalan <dani@danielbertalan.dev>
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-2-Clause
|
||||
*/
|
||||
|
||||
#include <AK/GenericLexer.h>
|
||||
#include <AK/HashTable.h>
|
||||
#include <AK/OwnPtr.h>
|
||||
#include <AK/SourceGenerator.h>
|
||||
#include <AK/String.h>
|
||||
#include <AK/StringBuilder.h>
|
||||
#include <AK/Types.h>
|
||||
#include <LibCore/ArgsParser.h>
|
||||
#include <LibCore/File.h>
|
||||
#include <ctype.h>
|
||||
|
||||
struct Range {
|
||||
int begin;
|
||||
int end;
|
||||
};
|
||||
|
||||
struct StateTransition {
|
||||
Optional<String> new_state;
|
||||
Optional<String> action;
|
||||
};
|
||||
|
||||
struct MatchedAction {
|
||||
Range range;
|
||||
StateTransition action;
|
||||
};
|
||||
|
||||
struct State {
|
||||
String name;
|
||||
Vector<MatchedAction> actions;
|
||||
Optional<String> entry_action;
|
||||
Optional<String> exit_action;
|
||||
};
|
||||
|
||||
struct StateMachine {
|
||||
String name;
|
||||
String initial_state;
|
||||
Vector<State> states;
|
||||
Optional<State> anywhere;
|
||||
Optional<String> namespaces;
|
||||
};
|
||||
|
||||
static OwnPtr<StateMachine>
|
||||
parse_state_machine(StringView input)
|
||||
{
|
||||
auto state_machine = make<StateMachine>();
|
||||
GenericLexer lexer(input);
|
||||
|
||||
auto consume_whitespace = [&] {
|
||||
bool consumed = true;
|
||||
while (consumed) {
|
||||
consumed = lexer.consume_while(isspace).length() > 0;
|
||||
if (lexer.consume_specific("//")) {
|
||||
lexer.consume_line();
|
||||
consumed = true;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
auto consume_identifier = [&] {
|
||||
consume_whitespace();
|
||||
return lexer.consume_while([](char c) { return isalnum(c) || c == '_'; });
|
||||
};
|
||||
|
||||
auto get_hex_value = [&](char c) {
|
||||
if (isdigit(c))
|
||||
return c - '0';
|
||||
else
|
||||
return c - 'a' + 10;
|
||||
};
|
||||
|
||||
auto consume_number = [&] {
|
||||
int num = 0;
|
||||
consume_whitespace();
|
||||
if (lexer.consume_specific("0x")) {
|
||||
auto hex_digits = lexer.consume_while([](char c) {
|
||||
if (isdigit(c)) return true;
|
||||
else {
|
||||
c = tolower(c);
|
||||
return (c >= 'a' && c <= 'f');
|
||||
} });
|
||||
for (auto c : hex_digits)
|
||||
num = 16 * num + get_hex_value(c);
|
||||
} else {
|
||||
lexer.consume_specific('\'');
|
||||
if (lexer.next_is('\\'))
|
||||
num = (int)lexer.consume_escaped_character('\\');
|
||||
else
|
||||
num = lexer.consume_until('\'').to_int().value();
|
||||
lexer.consume_specific('\'');
|
||||
}
|
||||
return num;
|
||||
};
|
||||
|
||||
auto consume_condition = [&] {
|
||||
Range condition;
|
||||
consume_whitespace();
|
||||
if (lexer.consume_specific('[')) {
|
||||
consume_whitespace();
|
||||
condition.begin = consume_number();
|
||||
consume_whitespace();
|
||||
lexer.consume_specific("..");
|
||||
consume_whitespace();
|
||||
condition.end = consume_number();
|
||||
consume_whitespace();
|
||||
lexer.consume_specific(']');
|
||||
} else {
|
||||
auto num = consume_number();
|
||||
condition.begin = num;
|
||||
condition.end = num;
|
||||
}
|
||||
return condition;
|
||||
};
|
||||
|
||||
auto consume_action = [&]() {
|
||||
StateTransition action;
|
||||
consume_whitespace();
|
||||
lexer.consume_specific("=>");
|
||||
consume_whitespace();
|
||||
lexer.consume_specific('(');
|
||||
consume_whitespace();
|
||||
if (!lexer.consume_specific("_"))
|
||||
action.new_state = consume_identifier();
|
||||
consume_whitespace();
|
||||
lexer.consume_specific(',');
|
||||
consume_whitespace();
|
||||
if (!lexer.consume_specific("_"))
|
||||
action.action = consume_identifier();
|
||||
consume_whitespace();
|
||||
lexer.consume_specific(')');
|
||||
return action;
|
||||
};
|
||||
|
||||
auto consume_state_description
|
||||
= [&] {
|
||||
State state;
|
||||
consume_whitespace();
|
||||
state.name = consume_identifier();
|
||||
consume_whitespace();
|
||||
consume_whitespace();
|
||||
lexer.consume_specific('{');
|
||||
for (;;) {
|
||||
consume_whitespace();
|
||||
if (lexer.consume_specific('}')) {
|
||||
break;
|
||||
}
|
||||
if (lexer.consume_specific("@entry")) {
|
||||
consume_whitespace();
|
||||
state.entry_action = consume_identifier();
|
||||
} else if (lexer.consume_specific("@exit")) {
|
||||
consume_whitespace();
|
||||
state.exit_action = consume_identifier();
|
||||
} else if (lexer.next_is('@')) {
|
||||
auto directive = consume_identifier().to_string();
|
||||
fprintf(stderr, "Unimplemented @ directive %s\n", directive.characters());
|
||||
exit(1);
|
||||
} else {
|
||||
MatchedAction matched_action;
|
||||
matched_action.range = consume_condition();
|
||||
matched_action.action = consume_action();
|
||||
state.actions.append(matched_action);
|
||||
}
|
||||
}
|
||||
return state;
|
||||
};
|
||||
|
||||
while (!lexer.is_eof()) {
|
||||
consume_whitespace();
|
||||
if (lexer.is_eof())
|
||||
break;
|
||||
if (lexer.consume_specific("@namespace")) {
|
||||
consume_whitespace();
|
||||
state_machine->namespaces = lexer.consume_while([](char c) { return isalpha(c) || c == ':'; });
|
||||
} else if (lexer.consume_specific("@begin")) {
|
||||
consume_whitespace();
|
||||
state_machine->initial_state = consume_identifier();
|
||||
} else if (lexer.consume_specific("@name")) {
|
||||
consume_whitespace();
|
||||
state_machine->name = consume_identifier();
|
||||
} else if (lexer.next_is("@anywhere")) {
|
||||
lexer.consume_specific('@');
|
||||
state_machine->anywhere = consume_state_description();
|
||||
} else if (lexer.consume_specific('@')) {
|
||||
auto directive = consume_identifier().to_string();
|
||||
fprintf(stderr, "Unimplemented @ directive %s\n", directive.characters());
|
||||
exit(1);
|
||||
} else {
|
||||
auto description = consume_state_description();
|
||||
state_machine->states.append(description);
|
||||
}
|
||||
}
|
||||
|
||||
if (state_machine->initial_state.is_empty()) {
|
||||
fprintf(stderr, "Missing @begin directive\n");
|
||||
exit(1);
|
||||
} else if (state_machine->name.is_empty()) {
|
||||
fprintf(stderr, "Missing @name directive\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (state_machine->anywhere.has_value()) {
|
||||
state_machine->anywhere.value().name = "_Anywhere";
|
||||
}
|
||||
return state_machine;
|
||||
}
|
||||
|
||||
void output_header(const StateMachine&, SourceGenerator&);
|
||||
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
Core::ArgsParser args_parser;
|
||||
const char* path = nullptr;
|
||||
args_parser.add_positional_argument(path, "Path to parser description", "input", Core::ArgsParser::Required::Yes);
|
||||
args_parser.parse(argc, argv);
|
||||
|
||||
auto file_or_error = Core::File::open(path, Core::OpenMode::ReadOnly);
|
||||
if (file_or_error.is_error()) {
|
||||
fprintf(stderr, "Cannot open %s\n", path);
|
||||
}
|
||||
|
||||
auto content = file_or_error.value()->read_all();
|
||||
auto state_machine = parse_state_machine(content);
|
||||
|
||||
StringBuilder builder;
|
||||
SourceGenerator generator { builder };
|
||||
output_header(*state_machine, generator);
|
||||
outln("{}", generator.as_string_view());
|
||||
return 0;
|
||||
}
|
||||
|
||||
HashTable<String> actions(const StateMachine& machine)
|
||||
{
|
||||
HashTable<String> table;
|
||||
|
||||
auto do_state = [&](const State& state) {
|
||||
if (state.entry_action.has_value())
|
||||
table.set(state.entry_action.value());
|
||||
if (state.exit_action.has_value())
|
||||
table.set(state.exit_action.value());
|
||||
for (auto action : state.actions) {
|
||||
if (action.action.action.has_value())
|
||||
table.set(action.action.action.value());
|
||||
}
|
||||
};
|
||||
for (auto state : machine.states) {
|
||||
do_state(state);
|
||||
}
|
||||
if (machine.anywhere.has_value())
|
||||
do_state(machine.anywhere.value());
|
||||
return table;
|
||||
}
|
||||
|
||||
void generate_lookup_table(const StateMachine& machine, SourceGenerator& generator)
|
||||
{
|
||||
generator.append(R"~~~(
|
||||
static constexpr StateTransition STATE_TRANSITION_TABLE[][256] = {
|
||||
)~~~");
|
||||
|
||||
auto generate_for_state = [&](const State& s) {
|
||||
auto table_generator = generator.fork();
|
||||
table_generator.set("active_state", s.name);
|
||||
table_generator.append("/* @active_state@ */ { ");
|
||||
VERIFY(!s.name.is_empty());
|
||||
Vector<StateTransition> row;
|
||||
for (int i = 0; i < 256; i++)
|
||||
row.append({ s.name, "_Ignore" });
|
||||
for (auto action : s.actions) {
|
||||
for (int range_element = action.range.begin; range_element <= action.range.end; range_element++) {
|
||||
row[range_element] = { action.action.new_state, action.action.action };
|
||||
}
|
||||
}
|
||||
for (int i = 0; i < 256; ++i) {
|
||||
auto cell_generator = table_generator.fork();
|
||||
cell_generator.set("cell_new_state", row[i].new_state.value_or(s.name));
|
||||
cell_generator.set("cell_action", row[i].action.value_or("_Ignore"));
|
||||
cell_generator.append(" {State::@cell_new_state@, Action::@cell_action@}, ");
|
||||
}
|
||||
table_generator.append("},\n");
|
||||
};
|
||||
if (machine.anywhere.has_value()) {
|
||||
generate_for_state(machine.anywhere.value());
|
||||
}
|
||||
for (auto s : machine.states) {
|
||||
generate_for_state(s);
|
||||
}
|
||||
generator.append(R"~~~(
|
||||
};
|
||||
)~~~");
|
||||
}
|
||||
|
||||
void output_header(const StateMachine& machine, SourceGenerator& generator)
|
||||
{
|
||||
generator.set("class_name", machine.name);
|
||||
generator.set("initial_state", machine.initial_state);
|
||||
generator.set("state_count", String::number(machine.states.size() + 1));
|
||||
|
||||
generator.append(R"~~~(
|
||||
#pragma once
|
||||
|
||||
#include <AK/Function.h>
|
||||
#include <AK/Platform.h>
|
||||
#include <AK/Types.h>
|
||||
)~~~");
|
||||
if (machine.namespaces.has_value()) {
|
||||
generator.set("namespace", machine.namespaces.value());
|
||||
generator.append(R"~~~(
|
||||
namespace @namespace@ {
|
||||
)~~~");
|
||||
}
|
||||
generator.append(R"~~~(
|
||||
class @class_name@ {
|
||||
public:
|
||||
enum class Action : u8 {
|
||||
_Ignore,
|
||||
)~~~");
|
||||
for (auto a : actions(machine)) {
|
||||
if (a.is_empty())
|
||||
continue;
|
||||
auto action_generator = generator.fork();
|
||||
action_generator.set("action.name", a);
|
||||
action_generator.append(R"~~~(
|
||||
@action.name@,
|
||||
)~~~");
|
||||
}
|
||||
|
||||
generator.append(R"~~~(
|
||||
}; // end Action
|
||||
|
||||
using Handler = Function<void(Action, u8)>;
|
||||
|
||||
@class_name@(Handler handler)
|
||||
: m_handler(move(handler))
|
||||
{
|
||||
}
|
||||
|
||||
void advance(u8 byte)
|
||||
{
|
||||
auto next_state = lookup_state_transition(byte);
|
||||
bool state_will_change = next_state.new_state != m_state && next_state.new_state != State::_Anywhere;
|
||||
|
||||
// only run exit directive if state is being changed
|
||||
if (state_will_change) {
|
||||
switch (m_state) {
|
||||
)~~~");
|
||||
for (auto s : machine.states) {
|
||||
auto state_generator = generator.fork();
|
||||
if (s.exit_action.has_value()) {
|
||||
state_generator.set("state_name", s.name);
|
||||
state_generator.set("action", s.exit_action.value());
|
||||
state_generator.append(R"~~~(
|
||||
case State::@state_name@:
|
||||
m_handler(Action::@action@, byte);
|
||||
break;
|
||||
)~~~");
|
||||
}
|
||||
}
|
||||
generator.append(R"~~~(
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (next_state.action != Action::_Ignore)
|
||||
m_handler(next_state.action, byte);
|
||||
m_state = next_state.new_state;
|
||||
|
||||
// only run entry directive if state is being changed
|
||||
if (state_will_change)
|
||||
{
|
||||
switch (next_state.new_state)
|
||||
{
|
||||
)~~~");
|
||||
for (auto state : machine.states) {
|
||||
auto state_generator = generator.fork();
|
||||
if (state.entry_action.has_value()) {
|
||||
state_generator.set("state_name", state.name);
|
||||
state_generator.set("action", state.entry_action.value());
|
||||
state_generator.append(R"~~~(
|
||||
case State::@state_name@:
|
||||
m_handler(Action::@action@, byte);
|
||||
break;
|
||||
)~~~");
|
||||
}
|
||||
}
|
||||
generator.append(R"~~~(
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
enum class State : u8 {
|
||||
_Anywhere,
|
||||
)~~~");
|
||||
|
||||
int largest_state_value = 0;
|
||||
for (auto s : machine.states) {
|
||||
auto state_generator = generator.fork();
|
||||
state_generator.set("state.name", s.name);
|
||||
largest_state_value++;
|
||||
state_generator.append(R"~~~(
|
||||
@state.name@,
|
||||
)~~~");
|
||||
}
|
||||
generator.append(R"~~~(
|
||||
}; // end State
|
||||
|
||||
struct StateTransition {
|
||||
State new_state;
|
||||
Action action;
|
||||
};
|
||||
|
||||
State m_state { State::@initial_state@ };
|
||||
|
||||
Handler m_handler;
|
||||
|
||||
ALWAYS_INLINE StateTransition lookup_state_transition(u8 byte)
|
||||
{
|
||||
VERIFY((u8)m_state < @state_count@);
|
||||
)~~~");
|
||||
if (machine.anywhere.has_value()) {
|
||||
generator.append(R"~~~(
|
||||
auto anywhere_state = STATE_TRANSITION_TABLE[0][byte];
|
||||
if (anywhere_state.new_state != State::_Anywhere || anywhere_state.action != Action::_Ignore)
|
||||
return anywhere_state;
|
||||
else
|
||||
)~~~");
|
||||
}
|
||||
generator.append(R"~~~(
|
||||
return STATE_TRANSITION_TABLE[(u8)m_state][byte];
|
||||
}
|
||||
)~~~");
|
||||
|
||||
auto table_generator = generator.fork();
|
||||
generate_lookup_table(machine, table_generator);
|
||||
generator.append(R"~~~(
|
||||
}; // end @class_name@
|
||||
)~~~");
|
||||
|
||||
if (machine.namespaces.has_value()) {
|
||||
generator.append(R"~~~(
|
||||
} // end namespace
|
||||
)~~~");
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue