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https://github.com/LadybirdBrowser/ladybird.git
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23ec578a01
Added the ability to include a u8 attributes parameter with all of the various put methods in the Object class. They can be omitted, in which case it defaults to "Writable | Enumerable | Configurable", just like before this commit. All of the attribute values for each property were gathered from SpiderMonkey in the Firefox console. Some properties (e.g. all of the canvas element properties) have undefined property descriptors... not quite sure what that means. Those were left as the default specified above.
79 lines
3.2 KiB
C++
79 lines
3.2 KiB
C++
/*
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* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
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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/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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#include <LibJS/Runtime/ScriptFunction.h>
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namespace JS {
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FunctionConstructor::FunctionConstructor()
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: NativeFunction("Function", *interpreter().global_object().function_prototype())
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{
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put("prototype", interpreter().global_object().function_prototype(), 0);
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put("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(Interpreter& interpreter)
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{
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return construct(interpreter);
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}
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Value FunctionConstructor::construct(Interpreter& interpreter)
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{
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String parameters_source = "";
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String body_source = "";
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if (interpreter.argument_count() == 1)
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body_source = interpreter.argument(0).to_string();
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if (interpreter.argument_count() > 1) {
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Vector<String> parameters;
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for (size_t i = 0; i < interpreter.argument_count() - 1; ++i)
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parameters.append(interpreter.argument(i).to_string());
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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 = interpreter.argument(interpreter.argument_count() - 1).to_string();
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}
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auto source = String::format("function (%s) { %s }", parameters_source.characters(), body_source.characters());
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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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// FIXME: The parser should expose parsing error strings rather than just fprintf()'ing them
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return Error::create(interpreter.global_object(), "SyntaxError", "");
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}
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return function_expression->execute(interpreter);
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}
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}
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