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ladybird/Userland/Libraries/LibJS/Runtime/FunctionObject.h

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LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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/*
LibJS: Rename Function => FunctionObject
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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*
Everything: Move to SPDX license identifiers in all files. 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 *
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* SPDX-License-Identifier: BSD-2-Clause
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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*/
#pragma once
#include <AK/String.h>
LibJS: Add "Heap" and "Runtime" subdirectories Let's try to keep LibJS tidy as it expands. :^)
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#include <LibJS/Runtime/Object.h>
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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namespace JS {
LibJS: Rename Function => FunctionObject
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class FunctionObject : public Object {
LibJS+LibWeb: Add JS::Object::inherits(class_name) To allow implementing the DOM class hierarchy in JS bindings, this patch adds an inherits() function that can be used to ask an Object if it inherits from a specific C++ class (by name). The necessary overrides are baked into each Object subclass by the new JS_OBJECT macro, which works similarly to C_OBJECT in LibCore. Thanks to @Dexesttp for suggesting this approach. :^)
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JS_OBJECT(Function, Object);
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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public:
LibJS: Rename Function => FunctionObject
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virtual ~FunctionObject();
LibJS: Simplify Cell::initialize() Remove the Interpreter& argument and pass only GlobalObject&. We can find everything we need via the global object anyway.
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virtual void initialize(GlobalObject&) override { }
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
2020-03-07 19:42:11 +01:00
LibJS: Make Function::call() not require an Interpreter& This makes a difference inside ScriptFunction::call(), which will now instantiate a temporary Interpreter if one is not attached to the VM.
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virtual Value call() = 0;
LibJS: Rename Function => FunctionObject
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virtual Value construct(FunctionObject& new_target) = 0;
LibJS: Make Function and CallFrame aware of their function name
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virtual const FlyString& name() const = 0;
LibJS: Drop "Record" suffix from all the *Environment record classes "Records" in the spec are basically C++ classes, so let's drop this mouthful of a suffix.
2021-07-01 12:24:46 +02:00
virtual FunctionEnvironment* create_environment(FunctionObject&) = 0;
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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LibJS: Implement Function.prototype.bind()
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BoundFunction* bind(Value bound_this_value, Vector<Value> arguments);
LibJS: Move "strict mode" state to the call stack Each call frame now knows whether it's executing in strict mode. It's no longer necessary to access the scope stack to find this mode.
2020-10-04 13:54:44 +02:00
virtual bool is_strict_mode() const { return false; }
LibJS: Add a [[Realm]] getter to FunctionObject and use it where needed Defined by https://tc39.es/ecma262/#sec-ordinaryfunctioncreate step #17 and by https://tc39.es/ecma262/#sec-createbuiltinfunction step #6.
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// [[Realm]]
LibJS: Set the callee context's realm in prepare_for_ordinary_call() This includes making FunctionObject::realm() actually return a Realm, instead of a GlobalObject.
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virtual Realm* realm() const { return nullptr; }
LibJS: Add a [[Realm]] getter to FunctionObject and use it where needed Defined by https://tc39.es/ecma262/#sec-ordinaryfunctioncreate step #17 and by https://tc39.es/ecma262/#sec-createbuiltinfunction step #6.
2021-06-30 17:54:47 +03:00
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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protected:
LibJS: Rename Function => FunctionObject
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explicit FunctionObject(Object& prototype);
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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private:
LibJS: Implement Proxy [[Call]] and [[Construct]] traps In order to do this, Proxy now extends Function rather than Object, and whether or not it returns true for is_function() depends on it's m_target.
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virtual bool is_function() const override { return true; }
LibJS: Start building a JavaScript engine for SerenityOS :^) I always tell people to start building things by working on the thing that seems the most interesting right now. The most interesting thing here was an AST + simple interpreter, so that's where we start! There is no lexer or parser yet, we build an AST directly and then execute it in the interpreter, producing a return value. This seems like the start of something interesting. :^)
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};
}
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