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Meta/CodeGenerators+LibWeb: Implement parsing CSS easing functions
This only implements the parser bits, no functionality is implemented, and no properties are parsed because of this.
This commit is contained in:
Ali Mohammad Pur
Andreas Kling
parent
401544f68f
commit
dd073b2711
Notes:
sideshowbarker
2024-07-17 01:13:25 +09:00
Author: https://github.com/alimpfard
Commit: dd073b2711
Pull-request: https://github.com/SerenityOS/serenity/pull/19845
Reviewed-by: https://github.com/AtkinsSJ
13 changed files with 471 additions and 5 deletions
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/*
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* Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2023, Ali Mohammad Pur <mpfard@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 "GeneratorUtil.h"
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#include <AK/GenericLexer.h>
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#include <AK/SourceGenerator.h>
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#include <LibCore/ArgsParser.h>
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#include <LibMain/Main.h>
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ErrorOr<void> generate_header_file(JsonObject&, Core::File&);
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ErrorOr<void> generate_implementation_file(JsonObject&, Core::File&);
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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StringView generated_header_path;
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StringView generated_implementation_path;
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StringView functions_json_path;
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Core::ArgsParser args_parser;
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args_parser.add_option(generated_header_path, "Path to the EasingFunctions header file to generate", "generated-header-path", 'h', "generated-header-path");
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args_parser.add_option(generated_implementation_path, "Path to the EasingFunctions implementation file to generate", "generated-implementation-path", 'c', "generated-implementation-path");
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args_parser.add_option(functions_json_path, "Path to the JSON file to read from", "json-path", 'j', "json-path");
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args_parser.parse(arguments);
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auto json = TRY(read_entire_file_as_json(functions_json_path));
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VERIFY(json.is_object());
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auto easing_data = json.as_object();
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auto generated_header_file = TRY(Core::File::open(generated_header_path, Core::File::OpenMode::Write));
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auto generated_implementation_file = TRY(Core::File::open(generated_implementation_path, Core::File::OpenMode::Write));
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TRY(generate_header_file(easing_data, *generated_header_file));
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TRY(generate_implementation_file(easing_data, *generated_implementation_file));
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return 0;
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}
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ErrorOr<void> generate_header_file(JsonObject& easing_data, Core::File& file)
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{
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StringBuilder builder;
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SourceGenerator generator { builder };
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TRY(generator.try_append(R"~~~(
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#pragma once
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#include <AK/Optional.h>
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#include <AK/StringView.h>
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#include <AK/Vector.h>
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namespace Web::CSS {
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)~~~"));
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TRY(generator.try_appendln("enum class EasingFunction {"));
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TRY(easing_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
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auto member_generator = TRY(generator.fork());
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TRY(member_generator.set("name:titlecase", TRY(title_casify(name))));
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TRY(member_generator.try_appendln(" @name:titlecase@,"));
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return {};
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}));
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TRY(generator.try_appendln("};"));
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TRY(generator.try_appendln("Optional<EasingFunction> easing_function_from_string(StringView);"));
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TRY(generator.try_appendln("StringView to_string(EasingFunction);"));
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TRY(generator.try_append(R"~~~(
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enum class EasingFunctionParameterType {
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Integer,
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Number,
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NumberZeroToOne,
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StepPosition,
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};
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struct EasingFunctionParameter {
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EasingFunctionParameterType type;
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bool is_optional { false };
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};
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struct EasingFunctionMetadata {
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Vector<EasingFunctionParameter> parameters;
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};
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EasingFunctionMetadata easing_function_metadata(EasingFunction);
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)~~~"));
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TRY(generator.try_appendln("\n}"));
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TRY(file.write_until_depleted(generator.as_string_view().bytes()));
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return {};
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}
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ErrorOr<void> generate_implementation_file(JsonObject& easing_data, Core::File& file)
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{
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StringBuilder builder;
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SourceGenerator generator { builder };
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TRY(generator.try_append(R"~~~(
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#include <LibWeb/CSS/EasingFunctions.h>
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#include <AK/Assertions.h>
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namespace Web::CSS {
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)~~~"));
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TRY(generator.try_append(R"~~~(
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Optional<EasingFunction> easing_function_from_string(StringView name)
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{
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)~~~"));
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TRY(easing_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
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auto member_generator = TRY(generator.fork());
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TRY(member_generator.set("name", TRY(String::from_deprecated_string(name))));
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TRY(member_generator.set("name:titlecase", TRY(title_casify(name))));
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TRY(member_generator.try_append(R"~~~(
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if (name.equals_ignoring_ascii_case("@name@"sv))
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return EasingFunction::@name:titlecase@;
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)~~~"));
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return {};
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}));
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TRY(generator.try_append(R"~~~(
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return {};
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}
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)~~~"));
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TRY(generator.try_append(R"~~~(
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StringView to_string(EasingFunction easing_function)
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{
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switch (easing_function) {
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)~~~"));
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TRY(easing_data.try_for_each_member([&](auto& name, auto&) -> ErrorOr<void> {
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auto member_generator = TRY(generator.fork());
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TRY(member_generator.set("name", TRY(String::from_deprecated_string(name))));
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TRY(member_generator.set("name:titlecase", TRY(title_casify(name))));
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TRY(member_generator.try_append(R"~~~(
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case EasingFunction::@name:titlecase@:
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return "@name@"sv;
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)~~~"));
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return {};
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}));
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TRY(generator.try_append(R"~~~(
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default:
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VERIFY_NOT_REACHED();
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}
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}
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)~~~"));
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TRY(generator.try_append(R"~~~(
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EasingFunctionMetadata easing_function_metadata(EasingFunction easing_function)
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{
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switch (easing_function) {
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)~~~"));
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TRY(easing_data.try_for_each_member([&](auto& name, auto& value) -> ErrorOr<void> {
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VERIFY(value.is_object());
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auto member_generator = TRY(generator.fork());
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TRY(member_generator.set("name:titlecase", TRY(title_casify(name))));
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TRY(member_generator.try_append(R"~~~(
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case EasingFunction::@name:titlecase@:
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return EasingFunctionMetadata {
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.parameters = {)~~~"));
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if (auto parameters = value.as_object().get_array("parameters"sv); parameters.has_value()) {
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bool first = true;
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// parameters: [ "<foo>", "<foo [0, 1]>" ]
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TRY(parameters.value().try_for_each([&](JsonValue const& value) -> ErrorOr<void> {
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GenericLexer lexer { value.as_string() };
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VERIFY(lexer.consume_specific('<'));
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auto parameter_type_name = lexer.consume_until([](char ch) { return ch == ' ' || ch == '>'; });
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auto has_bounds = false;
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auto is_optional = false;
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if (lexer.consume_specific(" [")) {
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has_bounds = true;
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auto contents = lexer.consume_until(']');
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VERIFY(contents == "0, 1"sv);
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VERIFY(lexer.consume_specific(']'));
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}
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VERIFY(lexer.consume_specific('>'));
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if (lexer.consume_specific('?'))
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is_optional = true;
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StringView parameter_type = ""sv;
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if (parameter_type_name == "number"sv)
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parameter_type = has_bounds ? "NumberZeroToOne"sv : "Number"sv;
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else if (parameter_type_name == "integer"sv)
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parameter_type = "Integer"sv;
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else if (parameter_type_name == "step-position"sv)
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parameter_type = "StepPosition"sv;
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else
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VERIFY_NOT_REACHED();
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TRY(member_generator.try_append(first ? " "sv : ", "sv));
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first = false;
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TRY(member_generator.try_append(TRY(String::formatted(
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"{{ EasingFunctionParameterType::{}, {} }}",
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parameter_type,
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is_optional ? "true"sv : "false"sv))));
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return {};
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}));
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}
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TRY(member_generator.try_append(R"~~~( }
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};
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)~~~"));
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return {};
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}));
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TRY(generator.try_append(R"~~~(
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default:
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VERIFY_NOT_REACHED();
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}
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}
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)~~~"));
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TRY(generator.try_appendln("\n}"));
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TRY(file.write_until_depleted(generator.as_string_view().bytes()));
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return {};
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}
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