1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
/*
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* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBuilder.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/Error.h>
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#include <LibJS/Runtime/FunctionConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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namespace JS {
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FunctionConstructor::FunctionConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.Function, *global_object.function_prototype())
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{
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}
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void FunctionConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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define_property(vm.names.prototype, global_object.function_prototype(), 0);
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define_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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FunctionConstructor::~FunctionConstructor()
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{
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}
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Value FunctionConstructor::call()
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{
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return construct(*this);
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}
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Value FunctionConstructor::construct(Function&)
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{
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auto& vm = this->vm();
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String parameters_source = "";
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String body_source = "";
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if (vm.argument_count() == 1) {
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body_source = vm.argument(0).to_string(global_object());
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if (vm.exception())
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return {};
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}
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if (vm.argument_count() > 1) {
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Vector<String> parameters;
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for (size_t i = 0; i < vm.argument_count() - 1; ++i) {
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parameters.append(vm.argument(i).to_string(global_object()));
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if (vm.exception())
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return {};
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}
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StringBuilder parameters_builder;
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parameters_builder.join(',', parameters);
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parameters_source = parameters_builder.build();
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body_source = vm.argument(vm.argument_count() - 1).to_string(global_object());
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if (vm.exception())
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return {};
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}
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auto source = String::formatted("function anonymous({}\n) {{\n{}\n}}", parameters_source, body_source);
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auto parser = Parser(Lexer(source));
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auto function_expression = parser.parse_function_node<FunctionExpression>();
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if (parser.has_errors()) {
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auto error = parser.errors()[0];
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vm.throw_exception<SyntaxError>(global_object(), error.to_string());
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return {};
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}
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OwnPtr<Interpreter> local_interpreter;
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Interpreter* interpreter = vm.interpreter_if_exists();
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if (!interpreter) {
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local_interpreter = Interpreter::create_with_existing_global_object(global_object());
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interpreter = local_interpreter.ptr();
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}
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VM::InterpreterExecutionScope scope(*interpreter);
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return function_expression->execute(*interpreter, global_object());
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}
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}
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