mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 22:02:44 +00:00
fca08bd000
This moves us towards being able to run JavaScript in different global objects without allocating a separate GC heap.
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());
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put("length", Value(1));
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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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