3d84fb64c3
This *not* being the same as C++ "%" in all cases is a massive footgun, and hopefully one I came across for the last time.
93 lines
4.8 KiB
C++
93 lines
4.8 KiB
C++
/*
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* Copyright (c) 2020-2021, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Forward.h>
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#include <LibJS/AST.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/PrivateEnvironment.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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DeclarativeEnvironment* new_declarative_environment(Environment&);
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ObjectEnvironment* new_object_environment(Object&, bool is_with_environment, Environment*);
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FunctionEnvironment* new_function_environment(ECMAScriptFunctionObject&, Object* new_target);
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PrivateEnvironment* new_private_environment(VM& vm, PrivateEnvironment* outer);
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Environment& get_this_environment(VM&);
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Object* get_super_constructor(VM&);
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ThrowCompletionOr<Reference> make_super_property_reference(GlobalObject&, Value actual_this, PropertyKey const&, bool strict);
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ThrowCompletionOr<Value> require_object_coercible(GlobalObject&, Value);
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ThrowCompletionOr<Value> call_impl(GlobalObject&, Value function, Value this_value, Optional<MarkedValueList> = {});
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ThrowCompletionOr<Object*> construct(GlobalObject&, FunctionObject&, Optional<MarkedValueList> = {}, FunctionObject* new_target = nullptr);
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ThrowCompletionOr<size_t> length_of_array_like(GlobalObject&, Object const&);
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ThrowCompletionOr<MarkedValueList> create_list_from_array_like(GlobalObject&, Value, Function<ThrowCompletionOr<void>(Value)> = {});
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ThrowCompletionOr<FunctionObject*> species_constructor(GlobalObject&, Object const&, FunctionObject& default_constructor);
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ThrowCompletionOr<Realm*> get_function_realm(GlobalObject&, FunctionObject const&);
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bool is_compatible_property_descriptor(bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
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bool validate_and_apply_property_descriptor(Object*, PropertyKey const&, bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
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ThrowCompletionOr<Object*> get_prototype_from_constructor(GlobalObject&, FunctionObject const& constructor, Object* (GlobalObject::*intrinsic_default_prototype)());
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Object* create_unmapped_arguments_object(GlobalObject&, Span<Value> arguments);
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Object* create_mapped_arguments_object(GlobalObject&, FunctionObject&, Vector<FunctionNode::Parameter> const&, Span<Value> arguments, Environment&);
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Value canonical_numeric_index_string(GlobalObject&, PropertyKey const&);
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ThrowCompletionOr<String> get_substitution(GlobalObject&, Utf16View const& matched, Utf16View const& str, size_t position, Span<Value> captures, Value named_captures, Value replacement);
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enum class CallerMode {
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Strict,
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NonStrict
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};
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enum class EvalMode {
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Direct,
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Indirect
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};
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ThrowCompletionOr<Value> perform_eval(Value, GlobalObject&, CallerMode, EvalMode);
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ThrowCompletionOr<void> eval_declaration_instantiation(VM& vm, GlobalObject& global_object, Program const& program, Environment* variable_environment, Environment* lexical_environment, PrivateEnvironment* private_environment, bool strict);
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// 7.3.13 Call ( F, V [ , argumentsList ] ), https://tc39.es/ecma262/#sec-call
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template<typename... Args>
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ALWAYS_INLINE ThrowCompletionOr<Value> call(GlobalObject& global_object, Value function, Value this_value, MarkedValueList arguments_list)
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{
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return call_impl(global_object, function, this_value, move(arguments_list));
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}
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template<typename... Args>
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ALWAYS_INLINE ThrowCompletionOr<Value> call(GlobalObject& global_object, Value function, Value this_value, Args... args)
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{
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if constexpr (sizeof...(Args) > 0) {
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MarkedValueList arguments_list { global_object.heap() };
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(..., arguments_list.append(move(args)));
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return call_impl(global_object, function, this_value, move(arguments_list));
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}
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return call_impl(global_object, function, this_value);
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}
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// 10.1.13 OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] ), https://tc39.es/ecma262/#sec-ordinarycreatefromconstructor
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template<typename T, typename... Args>
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ThrowCompletionOr<T*> ordinary_create_from_constructor(GlobalObject& global_object, FunctionObject const& constructor, Object* (GlobalObject::*intrinsic_default_prototype)(), Args&&... args)
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{
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auto* prototype = TRY(get_prototype_from_constructor(global_object, constructor, intrinsic_default_prototype));
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return global_object.heap().allocate<T>(global_object, forward<Args>(args)..., *prototype);
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}
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// x modulo y, https://tc39.es/ecma262/#eqn-modulo
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template<typename T>
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T modulo(T x, T y)
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{
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// The notation “x modulo y” (y must be finite and non-zero) computes a value k of the same sign as y (or zero) such that abs(k) < abs(y) and x - k = q × y for some integer q.
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VERIFY(y != 0);
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if constexpr (IsFloatingPoint<T>) {
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VERIFY(isfinite(y));
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return fmod(fmod(x, y) + y, y);
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} else {
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return ((x % y) + y) % y;
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}
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}
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}
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