mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 01:06:01 +03:00
d062d7baa7
LibWeb now creates a WindowObject which inherits from GlobalObject. Allocation of the global object is moved out of the Interpreter ctor to allow for specialized construction. The existing Window interfaces are moved to WindowObject with their implementation code in the new Window class.
243 lines
7.9 KiB
C++
243 lines
7.9 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/ByteBuffer.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/StringBuilder.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibJS/AST.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Parser.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/Date.h>
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#include <LibJS/Runtime/Function.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/PrimitiveString.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibLine/Editor.h>
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#include <stdio.h>
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bool dump_ast = false;
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static OwnPtr<Line::Editor> editor;
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String read_next_piece()
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{
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StringBuilder piece;
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int level = 0;
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StringBuilder prompt_builder;
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do {
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prompt_builder.clear();
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prompt_builder.append("> ");
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for (auto i = 0; i < level; ++i)
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prompt_builder.append(" ");
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String line = editor->get_line(prompt_builder.build());
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piece.append(line);
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auto lexer = JS::Lexer(line);
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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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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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level--;
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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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} while (level > 0);
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return piece.to_string();
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}
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static void print_value(JS::Value value, HashTable<JS::Object*>& seen_objects);
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static void print_array(const JS::Array* array, HashTable<JS::Object*>& seen_objects)
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{
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fputs("[ ", stdout);
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for (size_t i = 0; i < array->elements().size(); ++i) {
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print_value(array->elements()[i], seen_objects);
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if (i != array->elements().size() - 1)
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fputs(", ", stdout);
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}
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fputs(" ]", stdout);
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}
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static void print_object(const JS::Object* object, HashTable<JS::Object*>& seen_objects)
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{
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fputs("{ ", stdout);
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size_t index = 0;
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for (auto& it : object->own_properties()) {
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printf("\"\033[33;1m%s\033[0m\": ", it.key.characters());
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print_value(it.value, seen_objects);
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if (index != object->own_properties().size() - 1)
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fputs(", ", stdout);
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++index;
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}
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fputs(" }", stdout);
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}
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static void print_function(const JS::Object* function, HashTable<JS::Object*>&)
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{
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printf("\033[34;1m[%s]\033[0m", function->class_name());
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}
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static void print_date(const JS::Object* date, HashTable<JS::Object*>&)
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{
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printf("\033[34;1mDate %s\033[0m", static_cast<const JS::Date*>(date)->string().characters());
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}
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void print_value(JS::Value value, HashTable<JS::Object*>& seen_objects)
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{
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if (value.is_object()) {
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if (seen_objects.contains(value.as_object())) {
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// FIXME: Maybe we should only do this for circular references,
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// not for all reoccurring objects.
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printf("<already printed Object %p>", value.as_object());
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return;
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}
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seen_objects.set(value.as_object());
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}
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if (value.is_array())
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return print_array(static_cast<const JS::Array*>(value.as_object()), seen_objects);
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if (value.is_object()) {
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auto* object = value.as_object();
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if (object->is_function())
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return print_function(object, seen_objects);
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if (object->is_date())
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return print_date(object, seen_objects);
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return print_object(object, seen_objects);
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}
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if (value.is_string())
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printf("\033[31;1m");
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else if (value.is_number())
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printf("\033[35;1m");
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else if (value.is_boolean())
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printf("\033[32;1m");
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else if (value.is_null())
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printf("\033[33;1m");
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else if (value.is_undefined())
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printf("\033[34;1m");
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if (value.is_string())
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putchar('"');
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printf("%s", value.to_string().characters());
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if (value.is_string())
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putchar('"');
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printf("\033[0m");
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}
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static void print(JS::Value value)
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{
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HashTable<JS::Object*> seen_objects;
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print_value(value, seen_objects);
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putchar('\n');
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}
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void repl(JS::Interpreter& interpreter)
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{
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while (true) {
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String piece = read_next_piece();
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if (piece.is_empty())
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continue;
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auto program = JS::Parser(JS::Lexer(piece)).parse_program();
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if (dump_ast)
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program->dump(0);
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auto result = interpreter.run(*program);
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print(result);
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}
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}
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int main(int argc, char** argv)
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{
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bool gc_on_every_allocation = false;
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bool print_last_result = false;
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const char* script_path = nullptr;
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Core::ArgsParser args_parser;
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args_parser.add_option(dump_ast, "Dump the AST", "dump-ast", 'A');
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args_parser.add_option(print_last_result, "Print last result", "print-last-result", 'l');
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args_parser.add_option(gc_on_every_allocation, "GC on every allocation", "gc-on-every-allocation", 'g');
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args_parser.add_positional_argument(script_path, "Path to script file", "script", Core::ArgsParser::Required::No);
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args_parser.parse(argc, argv);
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JS::Interpreter interpreter;
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interpreter.initialize_global_object<JS::GlobalObject>();
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interpreter.heap().set_should_collect_on_every_allocation(gc_on_every_allocation);
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interpreter.global_object().put("global", &interpreter.global_object());
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if (script_path == nullptr) {
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editor = make<Line::Editor>();
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editor->initialize();
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repl(interpreter);
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} else {
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auto file = Core::File::construct(script_path);
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if (!file->open(Core::IODevice::ReadOnly)) {
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fprintf(stderr, "Failed to open %s: %s\n", script_path, 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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StringView source;
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if (file_contents.size() >= 2 && file_contents[0] == '#' && file_contents[1] == '!') {
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size_t i = 0;
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for (i = 2; i < file_contents.size(); ++i) {
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if (file_contents[i] == '\n')
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break;
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}
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source = StringView((const char*)file_contents.data() + i, file_contents.size() - i);
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} else {
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source = file_contents;
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}
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auto program = JS::Parser(JS::Lexer(source)).parse_program();
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if (dump_ast)
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program->dump(0);
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auto result = interpreter.run(*program);
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if (print_last_result)
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printf("%s\n", result.to_string().characters());
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}
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return 0;
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}
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