mirror of
https://github.com/SerenityOS/serenity
synced 2024-07-22 02:26:11 +00:00
65717e3b75
These functions all have a very common case that can be dealt with a very simple inline check, often avoiding the need to call an out-of-line function. This patch moves the common case to inline functions in a new ValueInlines.h header (necessary due to header dependency issues..) 8% speed-up on the entire Kraken benchmark :^)
884 lines
33 KiB
C++
884 lines
33 KiB
C++
/*
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* Copyright (c) 2020-2023, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2020-2023, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2020-2022, 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 <AK/JsonValue.h>
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#include <AK/StringBuilder.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/ConfigFile.h>
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#include <LibCore/StandardPaths.h>
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#include <LibCore/System.h>
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#include <LibJS/Bytecode/BasicBlock.h>
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#include <LibJS/Bytecode/Generator.h>
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#include <LibJS/Bytecode/Interpreter.h>
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#include <LibJS/Console.h>
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#include <LibJS/Contrib/Test262/GlobalObject.h>
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#include <LibJS/Parser.h>
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#include <LibJS/Print.h>
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#include <LibJS/Runtime/ConsoleObject.h>
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#include <LibJS/Runtime/DeclarativeEnvironment.h>
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#include <LibJS/Runtime/GlobalEnvironment.h>
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#include <LibJS/Runtime/JSONObject.h>
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#include <LibJS/Runtime/StringPrototype.h>
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#include <LibJS/Runtime/ValueInlines.h>
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#include <LibJS/SourceTextModule.h>
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#include <LibLine/Editor.h>
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#include <LibMain/Main.h>
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#include <LibTextCodec/Decoder.h>
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#include <signal.h>
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RefPtr<JS::VM> g_vm;
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Vector<String> g_repl_statements;
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JS::Handle<JS::Value> g_last_value = JS::make_handle(JS::js_undefined());
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class ReplObject final : public JS::GlobalObject {
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JS_OBJECT(ReplObject, JS::GlobalObject);
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public:
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ReplObject(JS::Realm& realm)
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: GlobalObject(realm)
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{
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}
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virtual void initialize(JS::Realm&) override;
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virtual ~ReplObject() override = default;
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private:
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JS_DECLARE_NATIVE_FUNCTION(exit_interpreter);
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JS_DECLARE_NATIVE_FUNCTION(repl_help);
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JS_DECLARE_NATIVE_FUNCTION(save_to_file);
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JS_DECLARE_NATIVE_FUNCTION(load_ini);
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JS_DECLARE_NATIVE_FUNCTION(load_json);
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JS_DECLARE_NATIVE_FUNCTION(last_value_getter);
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JS_DECLARE_NATIVE_FUNCTION(print);
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};
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class ScriptObject final : public JS::GlobalObject {
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JS_OBJECT(ScriptObject, JS::GlobalObject);
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public:
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ScriptObject(JS::Realm& realm)
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: JS::GlobalObject(realm)
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{
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}
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virtual void initialize(JS::Realm&) override;
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virtual ~ScriptObject() override = default;
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private:
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JS_DECLARE_NATIVE_FUNCTION(load_ini);
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JS_DECLARE_NATIVE_FUNCTION(load_json);
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JS_DECLARE_NATIVE_FUNCTION(print);
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};
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static bool s_dump_ast = false;
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static bool s_as_module = false;
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static bool s_print_last_result = false;
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static bool s_strip_ansi = false;
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static bool s_disable_source_location_hints = false;
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static RefPtr<Line::Editor> s_editor;
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static String s_history_path = String {};
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static int s_repl_line_level = 0;
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static bool s_fail_repl = false;
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static ErrorOr<void> print(JS::Value value, Stream& stream)
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{
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JS::PrintContext print_context { .vm = *g_vm, .stream = stream, .strip_ansi = s_strip_ansi };
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return JS::print(value, print_context);
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}
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enum class PrintTarget {
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StandardError,
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StandardOutput,
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};
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static ErrorOr<void> print(JS::Value value, PrintTarget target = PrintTarget::StandardOutput)
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{
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auto stream = TRY(target == PrintTarget::StandardError ? Core::File::standard_error() : Core::File::standard_output());
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return print(value, *stream);
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}
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static ErrorOr<String> prompt_for_level(int level)
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{
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static StringBuilder prompt_builder;
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prompt_builder.clear();
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prompt_builder.append("> "sv);
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for (auto i = 0; i < level; ++i)
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prompt_builder.append(" "sv);
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return prompt_builder.to_string();
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}
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static ErrorOr<String> read_next_piece()
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{
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StringBuilder piece;
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auto line_level_delta_for_next_line { 0 };
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do {
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auto line_result = s_editor->get_line(TRY(prompt_for_level(s_repl_line_level)).to_deprecated_string());
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line_level_delta_for_next_line = 0;
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if (line_result.is_error()) {
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s_fail_repl = true;
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return String {};
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}
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auto& line = line_result.value();
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s_editor->add_to_history(line);
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piece.append(line);
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piece.append('\n');
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auto lexer = JS::Lexer(line);
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enum {
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NotInLabelOrObjectKey,
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InLabelOrObjectKeyIdentifier,
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InLabelOrObjectKey
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} label_state { NotInLabelOrObjectKey };
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for (JS::Token token = lexer.next(); token.type() != JS::TokenType::Eof; token = lexer.next()) {
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switch (token.type()) {
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case JS::TokenType::BracketOpen:
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case JS::TokenType::CurlyOpen:
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case JS::TokenType::ParenOpen:
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label_state = NotInLabelOrObjectKey;
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s_repl_line_level++;
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break;
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case JS::TokenType::BracketClose:
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case JS::TokenType::CurlyClose:
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case JS::TokenType::ParenClose:
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label_state = NotInLabelOrObjectKey;
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s_repl_line_level--;
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break;
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case JS::TokenType::Identifier:
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case JS::TokenType::StringLiteral:
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if (label_state == NotInLabelOrObjectKey)
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label_state = InLabelOrObjectKeyIdentifier;
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else
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label_state = NotInLabelOrObjectKey;
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break;
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case JS::TokenType::Colon:
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if (label_state == InLabelOrObjectKeyIdentifier)
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label_state = InLabelOrObjectKey;
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else
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label_state = NotInLabelOrObjectKey;
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break;
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default:
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break;
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}
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}
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if (label_state == InLabelOrObjectKey) {
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// If there's a label or object literal key at the end of this line,
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// prompt for more lines but do not change the line level.
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line_level_delta_for_next_line += 1;
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}
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} while (s_repl_line_level + line_level_delta_for_next_line > 0);
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return piece.to_string();
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}
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static ErrorOr<void> write_to_file(String const& path)
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{
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auto file = TRY(Core::File::open(path, Core::File::OpenMode::Write, 0666));
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for (size_t i = 0; i < g_repl_statements.size(); i++) {
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auto line = g_repl_statements[i].bytes();
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if (line.size() > 0 && i != g_repl_statements.size() - 1) {
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TRY(file->write_until_depleted(line));
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}
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if (i != g_repl_statements.size() - 1) {
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TRY(file->write_value('\n'));
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}
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}
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file->close();
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return {};
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}
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static ErrorOr<bool> parse_and_run(JS::Realm& realm, StringView source, StringView source_name)
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{
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auto& vm = realm.vm();
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JS::ThrowCompletionOr<JS::Value> result { JS::js_undefined() };
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auto run_script_or_module = [&](auto& script_or_module) {
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if (s_dump_ast)
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script_or_module->parse_node().dump(0);
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result = vm.bytecode_interpreter().run(*script_or_module);
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};
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if (!s_as_module) {
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auto script_or_error = JS::Script::parse(source, realm, source_name);
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if (script_or_error.is_error()) {
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auto error = script_or_error.error()[0];
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auto hint = error.source_location_hint(source);
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if (!hint.is_empty())
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outln("{}", hint);
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auto error_string = TRY(error.to_string());
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outln("{}", error_string);
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result = vm.throw_completion<JS::SyntaxError>(move(error_string));
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} else {
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run_script_or_module(script_or_error.value());
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}
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} else {
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auto module_or_error = JS::SourceTextModule::parse(source, realm, source_name);
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if (module_or_error.is_error()) {
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auto error = module_or_error.error()[0];
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auto hint = error.source_location_hint(source);
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if (!hint.is_empty())
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outln("{}", hint);
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auto error_string = TRY(error.to_string());
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outln("{}", error_string);
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result = vm.throw_completion<JS::SyntaxError>(move(error_string));
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} else {
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run_script_or_module(module_or_error.value());
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}
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}
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auto handle_exception = [&](JS::Value thrown_value) -> ErrorOr<void> {
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warnln("Uncaught exception: ");
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TRY(print(thrown_value, PrintTarget::StandardError));
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warnln();
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if (!thrown_value.is_object() || !is<JS::Error>(thrown_value.as_object()))
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return {};
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auto const& traceback = static_cast<JS::Error const&>(thrown_value.as_object()).traceback();
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if (traceback.size() > 1) {
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unsigned repetitions = 0;
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for (size_t i = 0; i < traceback.size(); ++i) {
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auto const& traceback_frame = traceback[i];
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if (i + 1 < traceback.size()) {
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auto const& next_traceback_frame = traceback[i + 1];
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if (next_traceback_frame.function_name == traceback_frame.function_name) {
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repetitions++;
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continue;
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}
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}
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if (repetitions > 4) {
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// If more than 5 (1 + >4) consecutive function calls with the same name, print
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// the name only once and show the number of repetitions instead. This prevents
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// printing ridiculously large call stacks of recursive functions.
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warnln(" -> {}", traceback_frame.function_name);
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warnln(" {} more calls", repetitions);
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} else {
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for (size_t j = 0; j < repetitions + 1; ++j) {
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warnln(" -> {} ({}:{},{})",
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traceback_frame.function_name,
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traceback_frame.source_range().code->filename(),
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traceback_frame.source_range().start.line,
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traceback_frame.source_range().start.column);
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}
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}
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repetitions = 0;
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}
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}
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return {};
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};
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if (!result.is_error())
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g_last_value = JS::make_handle(result.value());
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if (result.is_error()) {
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VERIFY(result.throw_completion().value().has_value());
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TRY(handle_exception(*result.release_error().value()));
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return false;
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}
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if (s_print_last_result) {
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TRY(print(result.value()));
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warnln();
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}
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return true;
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}
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static JS::ThrowCompletionOr<JS::Value> load_ini_impl(JS::VM& vm)
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{
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auto& realm = *vm.current_realm();
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auto filename = TRY(vm.argument(0).to_deprecated_string(vm));
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auto file_or_error = Core::File::open(filename, Core::File::OpenMode::Read);
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if (file_or_error.is_error())
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return vm.throw_completion<JS::Error>(TRY_OR_THROW_OOM(vm, String::formatted("Failed to open '{}': {}", filename, file_or_error.error())));
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auto config_file = MUST(Core::ConfigFile::open(filename, file_or_error.release_value()));
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auto object = JS::Object::create(realm, realm.intrinsics().object_prototype());
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for (auto const& group : config_file->groups()) {
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auto group_object = JS::Object::create(realm, realm.intrinsics().object_prototype());
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for (auto const& key : config_file->keys(group)) {
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auto entry = config_file->read_entry(group, key);
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group_object->define_direct_property(key, JS::PrimitiveString::create(vm, move(entry)), JS::Attribute::Enumerable | JS::Attribute::Configurable | JS::Attribute::Writable);
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}
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object->define_direct_property(group, group_object, JS::Attribute::Enumerable | JS::Attribute::Configurable | JS::Attribute::Writable);
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}
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return object;
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}
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static JS::ThrowCompletionOr<JS::Value> load_json_impl(JS::VM& vm)
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{
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auto filename = TRY(vm.argument(0).to_string(vm));
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auto file_or_error = Core::File::open(filename, Core::File::OpenMode::Read);
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if (file_or_error.is_error())
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return vm.throw_completion<JS::Error>(TRY_OR_THROW_OOM(vm, String::formatted("Failed to open '{}': {}", filename, file_or_error.error())));
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auto file_contents_or_error = file_or_error.value()->read_until_eof();
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if (file_contents_or_error.is_error())
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return vm.throw_completion<JS::Error>(TRY_OR_THROW_OOM(vm, String::formatted("Failed to read '{}': {}", filename, file_contents_or_error.error())));
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auto json = JsonValue::from_string(file_contents_or_error.value());
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if (json.is_error())
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return vm.throw_completion<JS::SyntaxError>(JS::ErrorType::JsonMalformed);
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return JS::JSONObject::parse_json_value(vm, json.value());
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}
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void ReplObject::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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define_direct_property("global", this, JS::Attribute::Enumerable);
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u8 attr = JS::Attribute::Configurable | JS::Attribute::Writable | JS::Attribute::Enumerable;
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define_native_function(realm, "exit", exit_interpreter, 0, attr);
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define_native_function(realm, "help", repl_help, 0, attr);
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define_native_function(realm, "save", save_to_file, 1, attr);
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define_native_function(realm, "loadINI", load_ini, 1, attr);
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define_native_function(realm, "loadJSON", load_json, 1, attr);
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define_native_function(realm, "print", print, 1, attr);
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define_native_accessor(
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realm,
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"_",
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[](JS::VM&) {
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return g_last_value.value();
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},
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[](JS::VM& vm) -> JS::ThrowCompletionOr<JS::Value> {
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auto& global_object = vm.get_global_object();
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VERIFY(is<ReplObject>(global_object));
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outln("Disable writing last value to '_'");
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// We must delete first otherwise this setter gets called recursively.
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TRY(global_object.internal_delete(JS::PropertyKey { "_" }));
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auto value = vm.argument(0);
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TRY(global_object.internal_set(JS::PropertyKey { "_" }, value, &global_object));
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return value;
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},
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attr);
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}
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JS_DEFINE_NATIVE_FUNCTION(ReplObject::save_to_file)
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{
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if (!vm.argument_count())
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return JS::Value(false);
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auto const save_path = TRY(vm.argument(0).to_string(vm));
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if (!write_to_file(save_path).is_error()) {
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return JS::Value(true);
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}
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return JS::Value(false);
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}
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JS_DEFINE_NATIVE_FUNCTION(ReplObject::exit_interpreter)
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{
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s_editor->save_history(s_history_path.to_deprecated_string());
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if (!vm.argument_count())
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exit(0);
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exit(TRY(vm.argument(0).to_number(vm)).as_double());
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}
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JS_DEFINE_NATIVE_FUNCTION(ReplObject::repl_help)
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{
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warnln("REPL commands:");
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warnln(" exit(code): exit the REPL with specified code. Defaults to 0.");
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warnln(" help(): display this menu");
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warnln(" loadINI(file): load the given file as INI.");
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warnln(" loadJSON(file): load the given file as JSON.");
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warnln(" print(value): pretty-print the given JS value.");
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warnln(" save(file): write REPL input history to the given file. For example: save(\"foo.txt\")");
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return JS::js_undefined();
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}
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JS_DEFINE_NATIVE_FUNCTION(ReplObject::load_ini)
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{
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return load_ini_impl(vm);
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}
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JS_DEFINE_NATIVE_FUNCTION(ReplObject::load_json)
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{
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return load_json_impl(vm);
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}
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JS_DEFINE_NATIVE_FUNCTION(ReplObject::print)
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{
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auto result = ::print(vm.argument(0));
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if (result.is_error())
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return g_vm->throw_completion<JS::InternalError>(TRY_OR_THROW_OOM(*g_vm, String::formatted("Failed to print value: {}", result.error())));
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outln();
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return JS::js_undefined();
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}
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void ScriptObject::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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define_direct_property("global", this, JS::Attribute::Enumerable);
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u8 attr = JS::Attribute::Configurable | JS::Attribute::Writable | JS::Attribute::Enumerable;
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define_native_function(realm, "loadINI", load_ini, 1, attr);
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define_native_function(realm, "loadJSON", load_json, 1, attr);
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define_native_function(realm, "print", print, 1, attr);
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}
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JS_DEFINE_NATIVE_FUNCTION(ScriptObject::load_ini)
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{
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return load_ini_impl(vm);
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}
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JS_DEFINE_NATIVE_FUNCTION(ScriptObject::load_json)
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{
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return load_json_impl(vm);
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}
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JS_DEFINE_NATIVE_FUNCTION(ScriptObject::print)
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{
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auto result = ::print(vm.argument(0));
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if (result.is_error())
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return g_vm->throw_completion<JS::InternalError>(TRY_OR_THROW_OOM(*g_vm, String::formatted("Failed to print value: {}", result.error())));
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outln();
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return JS::js_undefined();
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}
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static ErrorOr<void> repl(JS::Realm& realm)
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{
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while (!s_fail_repl) {
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auto const piece = TRY(read_next_piece());
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if (Utf8View { piece }.trim(JS::whitespace_characters).is_empty())
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continue;
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g_repl_statements.append(piece);
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TRY(parse_and_run(realm, piece, "REPL"sv));
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}
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return {};
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}
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static Function<void()> interrupt_interpreter;
|
|
static void sigint_handler()
|
|
{
|
|
interrupt_interpreter();
|
|
}
|
|
|
|
class ReplConsoleClient final : public JS::ConsoleClient {
|
|
public:
|
|
ReplConsoleClient(JS::Console& console)
|
|
: ConsoleClient(console)
|
|
{
|
|
}
|
|
|
|
virtual void clear() override
|
|
{
|
|
out("\033[3J\033[H\033[2J");
|
|
m_group_stack_depth = 0;
|
|
fflush(stdout);
|
|
}
|
|
|
|
virtual void end_group() override
|
|
{
|
|
if (m_group_stack_depth > 0)
|
|
m_group_stack_depth--;
|
|
}
|
|
|
|
// 2.3. Printer(logLevel, args[, options]), https://console.spec.whatwg.org/#printer
|
|
virtual JS::ThrowCompletionOr<JS::Value> printer(JS::Console::LogLevel log_level, PrinterArguments arguments) override
|
|
{
|
|
auto indent = TRY_OR_THROW_OOM(*g_vm, String::repeated(' ', m_group_stack_depth * 2));
|
|
|
|
if (log_level == JS::Console::LogLevel::Trace) {
|
|
auto trace = arguments.get<JS::Console::Trace>();
|
|
StringBuilder builder;
|
|
if (!trace.label.is_empty())
|
|
builder.appendff("{}\033[36;1m{}\033[0m\n", indent, trace.label);
|
|
|
|
for (auto& function_name : trace.stack)
|
|
builder.appendff("{}-> {}\n", indent, function_name);
|
|
|
|
outln("{}", builder.string_view());
|
|
return JS::js_undefined();
|
|
}
|
|
|
|
if (log_level == JS::Console::LogLevel::Group || log_level == JS::Console::LogLevel::GroupCollapsed) {
|
|
auto group = arguments.get<JS::Console::Group>();
|
|
outln("{}\033[36;1m{}\033[0m", indent, group.label);
|
|
m_group_stack_depth++;
|
|
return JS::js_undefined();
|
|
}
|
|
|
|
auto output = TRY(generically_format_values(arguments.get<JS::MarkedVector<JS::Value>>()));
|
|
#ifdef AK_OS_SERENITY
|
|
m_console.output_debug_message(log_level, output);
|
|
#endif
|
|
|
|
switch (log_level) {
|
|
case JS::Console::LogLevel::Debug:
|
|
outln("{}\033[36;1m{}\033[0m", indent, output);
|
|
break;
|
|
case JS::Console::LogLevel::Error:
|
|
case JS::Console::LogLevel::Assert:
|
|
outln("{}\033[31;1m{}\033[0m", indent, output);
|
|
break;
|
|
case JS::Console::LogLevel::Info:
|
|
outln("{}(i) {}", indent, output);
|
|
break;
|
|
case JS::Console::LogLevel::Log:
|
|
outln("{}{}", indent, output);
|
|
break;
|
|
case JS::Console::LogLevel::Warn:
|
|
case JS::Console::LogLevel::CountReset:
|
|
outln("{}\033[33;1m{}\033[0m", indent, output);
|
|
break;
|
|
default:
|
|
outln("{}{}", indent, output);
|
|
break;
|
|
}
|
|
return JS::js_undefined();
|
|
}
|
|
|
|
private:
|
|
int m_group_stack_depth { 0 };
|
|
};
|
|
|
|
ErrorOr<int> serenity_main(Main::Arguments arguments)
|
|
{
|
|
TRY(Core::System::pledge("stdio rpath wpath cpath tty sigaction"));
|
|
|
|
bool gc_on_every_allocation = false;
|
|
bool disable_syntax_highlight = false;
|
|
bool disable_debug_printing = false;
|
|
bool use_test262_global = false;
|
|
StringView evaluate_script;
|
|
Vector<StringView> script_paths;
|
|
|
|
Core::ArgsParser args_parser;
|
|
args_parser.set_general_help("This is a JavaScript interpreter.");
|
|
args_parser.add_option(s_dump_ast, "Dump the AST", "dump-ast", 'A');
|
|
args_parser.add_option(JS::Bytecode::g_dump_bytecode, "Dump the bytecode", "dump-bytecode", 'd');
|
|
args_parser.add_option(s_as_module, "Treat as module", "as-module", 'm');
|
|
args_parser.add_option(s_print_last_result, "Print last result", "print-last-result", 'l');
|
|
args_parser.add_option(s_strip_ansi, "Disable ANSI colors", "disable-ansi-colors", 'i');
|
|
args_parser.add_option(s_disable_source_location_hints, "Disable source location hints", "disable-source-location-hints", 'h');
|
|
args_parser.add_option(gc_on_every_allocation, "GC on every allocation", "gc-on-every-allocation", 'g');
|
|
args_parser.add_option(disable_syntax_highlight, "Disable live syntax highlighting", "no-syntax-highlight", 's');
|
|
args_parser.add_option(disable_debug_printing, "Disable debug output", "disable-debug-output", {});
|
|
args_parser.add_option(evaluate_script, "Evaluate argument as a script", "evaluate", 'c', "script");
|
|
args_parser.add_option(use_test262_global, "Use test262 global ($262)", "use-test262-global", {});
|
|
args_parser.add_positional_argument(script_paths, "Path to script files", "scripts", Core::ArgsParser::Required::No);
|
|
args_parser.parse(arguments);
|
|
|
|
bool syntax_highlight = !disable_syntax_highlight;
|
|
|
|
AK::set_debug_enabled(!disable_debug_printing);
|
|
s_history_path = TRY(String::formatted("{}/.js-history", Core::StandardPaths::home_directory()));
|
|
|
|
g_vm = TRY(JS::VM::create());
|
|
g_vm->enable_default_host_import_module_dynamically_hook();
|
|
|
|
if (!disable_debug_printing) {
|
|
// NOTE: These will print out both warnings when using something like Promise.reject().catch(...) -
|
|
// which is, as far as I can tell, correct - a promise is created, rejected without handler, and a
|
|
// handler then attached to it. The Node.js REPL doesn't warn in this case, so it's something we
|
|
// might want to revisit at a later point and disable warnings for promises created this way.
|
|
g_vm->on_promise_unhandled_rejection = [](auto& promise) {
|
|
warn("WARNING: A promise was rejected without any handlers");
|
|
warn(" (result: ");
|
|
(void)print(promise.result(), PrintTarget::StandardError);
|
|
warnln(")");
|
|
};
|
|
g_vm->on_promise_rejection_handled = [](auto& promise) {
|
|
warn("WARNING: A handler was added to an already rejected promise");
|
|
warn(" (result: ");
|
|
(void)print(promise.result(), PrintTarget::StandardError);
|
|
warnln(")");
|
|
};
|
|
}
|
|
|
|
// FIXME: Figure out some way to interrupt the interpreter now that vm.exception() is gone.
|
|
|
|
if (evaluate_script.is_empty() && script_paths.is_empty()) {
|
|
s_print_last_result = true;
|
|
|
|
auto root_execution_context = JS::create_simple_execution_context<ReplObject>(*g_vm);
|
|
auto& realm = *root_execution_context->realm;
|
|
|
|
auto& console_object = *realm.intrinsics().console_object();
|
|
ReplConsoleClient console_client(console_object.console());
|
|
console_object.console().set_client(console_client);
|
|
g_vm->heap().set_should_collect_on_every_allocation(gc_on_every_allocation);
|
|
|
|
auto& global_environment = realm.global_environment();
|
|
|
|
s_editor = Line::Editor::construct();
|
|
s_editor->load_history(s_history_path.to_deprecated_string());
|
|
|
|
signal(SIGINT, [](int) {
|
|
if (!s_editor->is_editing())
|
|
sigint_handler();
|
|
s_editor->save_history(s_history_path.to_deprecated_string());
|
|
});
|
|
|
|
s_editor->on_display_refresh = [syntax_highlight](Line::Editor& editor) {
|
|
auto stylize = [&](Line::Span span, Line::Style styles) {
|
|
if (syntax_highlight)
|
|
editor.stylize(span, styles);
|
|
};
|
|
editor.strip_styles();
|
|
|
|
size_t open_indents = s_repl_line_level;
|
|
|
|
auto line = editor.line();
|
|
JS::Lexer lexer(line);
|
|
bool indenters_starting_line = true;
|
|
for (JS::Token token = lexer.next(); token.type() != JS::TokenType::Eof; token = lexer.next()) {
|
|
auto length = Utf8View { token.value() }.length();
|
|
auto start = token.offset();
|
|
auto end = start + length;
|
|
if (indenters_starting_line) {
|
|
if (token.type() != JS::TokenType::ParenClose && token.type() != JS::TokenType::BracketClose && token.type() != JS::TokenType::CurlyClose) {
|
|
indenters_starting_line = false;
|
|
} else {
|
|
--open_indents;
|
|
}
|
|
}
|
|
|
|
switch (token.category()) {
|
|
case JS::TokenCategory::Invalid:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::Red), Line::Style::Underline });
|
|
break;
|
|
case JS::TokenCategory::Number:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::Magenta) });
|
|
break;
|
|
case JS::TokenCategory::String:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::Green), Line::Style::Bold });
|
|
break;
|
|
case JS::TokenCategory::Punctuation:
|
|
break;
|
|
case JS::TokenCategory::Operator:
|
|
break;
|
|
case JS::TokenCategory::Keyword:
|
|
switch (token.type()) {
|
|
case JS::TokenType::BoolLiteral:
|
|
case JS::TokenType::NullLiteral:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::Yellow), Line::Style::Bold });
|
|
break;
|
|
default:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::Blue), Line::Style::Bold });
|
|
break;
|
|
}
|
|
break;
|
|
case JS::TokenCategory::ControlKeyword:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::Cyan), Line::Style::Italic });
|
|
break;
|
|
case JS::TokenCategory::Identifier:
|
|
stylize({ start, end, Line::Span::CodepointOriented }, { Line::Style::Foreground(Line::Style::XtermColor::White), Line::Style::Bold });
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
editor.set_prompt(prompt_for_level(open_indents).release_value_but_fixme_should_propagate_errors().to_deprecated_string());
|
|
};
|
|
|
|
auto complete = [&realm, &global_environment](Line::Editor const& editor) -> Vector<Line::CompletionSuggestion> {
|
|
auto line = editor.line(editor.cursor());
|
|
|
|
JS::Lexer lexer { line };
|
|
enum {
|
|
Initial,
|
|
CompleteVariable,
|
|
CompleteNullProperty,
|
|
CompleteProperty,
|
|
} mode { Initial };
|
|
|
|
StringView variable_name;
|
|
StringView property_name;
|
|
|
|
// we're only going to complete either
|
|
// - <N>
|
|
// where N is part of the name of a variable
|
|
// - <N>.<P>
|
|
// where N is the complete name of a variable and
|
|
// P is part of the name of one of its properties
|
|
auto js_token = lexer.next();
|
|
for (; js_token.type() != JS::TokenType::Eof; js_token = lexer.next()) {
|
|
switch (mode) {
|
|
case CompleteVariable:
|
|
switch (js_token.type()) {
|
|
case JS::TokenType::Period:
|
|
// ...<name> <dot>
|
|
mode = CompleteNullProperty;
|
|
break;
|
|
default:
|
|
// not a dot, reset back to initial
|
|
mode = Initial;
|
|
break;
|
|
}
|
|
break;
|
|
case CompleteNullProperty:
|
|
if (js_token.is_identifier_name()) {
|
|
// ...<name> <dot> <name>
|
|
mode = CompleteProperty;
|
|
property_name = js_token.value();
|
|
} else {
|
|
mode = Initial;
|
|
}
|
|
break;
|
|
case CompleteProperty:
|
|
// something came after the property access, reset to initial
|
|
case Initial:
|
|
if (js_token.type() == JS::TokenType::Identifier) {
|
|
// ...<name>...
|
|
mode = CompleteVariable;
|
|
variable_name = js_token.value();
|
|
} else {
|
|
mode = Initial;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool last_token_has_trivia = js_token.trivia().length() > 0;
|
|
|
|
if (mode == CompleteNullProperty) {
|
|
mode = CompleteProperty;
|
|
property_name = ""sv;
|
|
last_token_has_trivia = false; // <name> <dot> [tab] is sensible to complete.
|
|
}
|
|
|
|
if (mode == Initial || last_token_has_trivia)
|
|
return {}; // we do not know how to complete this
|
|
|
|
Vector<Line::CompletionSuggestion> results;
|
|
|
|
Function<void(JS::Shape const&, StringView)> list_all_properties = [&results, &list_all_properties](JS::Shape const& shape, auto property_pattern) {
|
|
for (auto const& descriptor : shape.property_table()) {
|
|
if (!descriptor.key.is_string())
|
|
continue;
|
|
auto key = descriptor.key.as_string();
|
|
if (key.view().starts_with(property_pattern)) {
|
|
Line::CompletionSuggestion completion { key, Line::CompletionSuggestion::ForSearch };
|
|
if (!results.contains_slow(completion)) { // hide duplicates
|
|
results.append(DeprecatedString(key));
|
|
results.last().invariant_offset = property_pattern.length();
|
|
}
|
|
}
|
|
}
|
|
if (auto const* prototype = shape.prototype()) {
|
|
list_all_properties(prototype->shape(), property_pattern);
|
|
}
|
|
};
|
|
|
|
switch (mode) {
|
|
case CompleteProperty: {
|
|
auto reference_or_error = g_vm->resolve_binding(variable_name, &global_environment);
|
|
if (reference_or_error.is_error())
|
|
return {};
|
|
auto value_or_error = reference_or_error.value().get_value(*g_vm);
|
|
if (value_or_error.is_error())
|
|
return {};
|
|
auto variable = value_or_error.value();
|
|
VERIFY(!variable.is_empty());
|
|
|
|
if (!variable.is_object())
|
|
break;
|
|
|
|
auto const object = MUST(variable.to_object(*g_vm));
|
|
auto const& shape = object->shape();
|
|
list_all_properties(shape, property_name);
|
|
break;
|
|
}
|
|
case CompleteVariable: {
|
|
auto const& variable = realm.global_object();
|
|
list_all_properties(variable.shape(), variable_name);
|
|
|
|
for (auto const& name : global_environment.declarative_record().bindings()) {
|
|
if (name.starts_with(variable_name)) {
|
|
results.empend(name);
|
|
results.last().invariant_offset = variable_name.length();
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
return results;
|
|
};
|
|
s_editor->on_tab_complete = move(complete);
|
|
TRY(repl(realm));
|
|
s_editor->save_history(s_history_path.to_deprecated_string());
|
|
} else {
|
|
OwnPtr<JS::ExecutionContext> root_execution_context;
|
|
if (use_test262_global)
|
|
root_execution_context = JS::create_simple_execution_context<JS::Test262::GlobalObject>(*g_vm);
|
|
else
|
|
root_execution_context = JS::create_simple_execution_context<ScriptObject>(*g_vm);
|
|
|
|
auto& realm = *root_execution_context->realm;
|
|
auto& console_object = *realm.intrinsics().console_object();
|
|
ReplConsoleClient console_client(console_object.console());
|
|
console_object.console().set_client(console_client);
|
|
g_vm->heap().set_should_collect_on_every_allocation(gc_on_every_allocation);
|
|
|
|
signal(SIGINT, [](int) {
|
|
sigint_handler();
|
|
});
|
|
|
|
StringBuilder builder;
|
|
StringView source_name;
|
|
|
|
if (evaluate_script.is_empty()) {
|
|
if (script_paths.size() > 1)
|
|
warnln("Warning: Multiple files supplied, this will concatenate the sources and resolve modules as if it was the first file");
|
|
|
|
for (auto& path : script_paths) {
|
|
auto file = TRY(Core::File::open(path, Core::File::OpenMode::Read));
|
|
auto file_contents = TRY(file->read_until_eof());
|
|
auto source = StringView { file_contents };
|
|
|
|
if (Utf8View { file_contents }.validate()) {
|
|
builder.append(source);
|
|
} else {
|
|
auto decoder = TextCodec::decoder_for("windows-1252"sv);
|
|
VERIFY(decoder.has_value());
|
|
|
|
auto utf8_source = TRY(TextCodec::convert_input_to_utf8_using_given_decoder_unless_there_is_a_byte_order_mark(*decoder, source));
|
|
builder.append(utf8_source);
|
|
}
|
|
}
|
|
|
|
source_name = script_paths[0];
|
|
} else {
|
|
builder.append(evaluate_script);
|
|
source_name = "eval"sv;
|
|
}
|
|
|
|
// We resolve modules as if it is the first file
|
|
|
|
if (!TRY(parse_and_run(realm, builder.string_view(), source_name)))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|