mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-20 09:49:15 +03:00
2239 lines
81 KiB
C++
2239 lines
81 KiB
C++
/*
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* Copyright (c) 2020-2024, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021-2022, David Tuin <davidot@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/ByteString.h>
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#include <AK/DeprecatedFlyString.h>
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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#include <LibJS/Bytecode/CodeGenerationError.h>
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#include <LibJS/Bytecode/Executable.h>
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#include <LibJS/Bytecode/IdentifierTable.h>
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#include <LibJS/Bytecode/Operand.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Heap/Handle.h>
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#include <LibJS/Runtime/ClassFieldDefinition.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/EnvironmentCoordinate.h>
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#include <LibJS/Runtime/FunctionKind.h>
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#include <LibJS/Runtime/ModuleRequest.h>
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#include <LibJS/Runtime/PropertyKey.h>
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#include <LibJS/Runtime/Reference.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibJS/SourceRange.h>
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#include <LibRegex/Regex.h>
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namespace JS {
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class Declaration;
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class ClassDeclaration;
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class FunctionDeclaration;
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class Identifier;
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class MemberExpression;
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class VariableDeclaration;
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template<class T, class... Args>
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static inline NonnullRefPtr<T>
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create_ast_node(SourceRange range, Args&&... args)
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{
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return adopt_ref(*new T(move(range), forward<Args>(args)...));
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}
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class ASTNode : public RefCounted<ASTNode> {
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public:
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virtual ~ASTNode() = default;
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// NOTE: This is here to stop ASAN complaining about mismatch between new/delete sizes in ASTNodeWithTailArray.
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void operator delete(void* ptr) { ::operator delete(ptr); }
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const;
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virtual void dump(int indent) const;
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[[nodiscard]] SourceRange source_range() const;
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UnrealizedSourceRange unrealized_source_range() const
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{
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return { m_source_code, m_start_offset, m_end_offset };
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}
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u32 start_offset() const { return m_start_offset; }
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u32 end_offset() const { return m_end_offset; }
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SourceCode const& source_code() const { return *m_source_code; }
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void set_end_offset(Badge<Parser>, u32 end_offset) { m_end_offset = end_offset; }
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ByteString class_name() const;
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template<typename T>
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bool fast_is() const = delete;
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virtual bool is_new_expression() const { return false; }
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virtual bool is_member_expression() const { return false; }
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virtual bool is_super_expression() const { return false; }
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virtual bool is_function_expression() const { return false; }
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virtual bool is_class_expression() const { return false; }
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virtual bool is_expression_statement() const { return false; }
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virtual bool is_identifier() const { return false; }
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virtual bool is_private_identifier() const { return false; }
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virtual bool is_scope_node() const { return false; }
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virtual bool is_program() const { return false; }
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virtual bool is_class_declaration() const { return false; }
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virtual bool is_function_declaration() const { return false; }
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virtual bool is_variable_declaration() const { return false; }
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virtual bool is_import_call() const { return false; }
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virtual bool is_array_expression() const { return false; }
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virtual bool is_object_expression() const { return false; }
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virtual bool is_string_literal() const { return false; }
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virtual bool is_update_expression() const { return false; }
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virtual bool is_call_expression() const { return false; }
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virtual bool is_labelled_statement() const { return false; }
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virtual bool is_iteration_statement() const { return false; }
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virtual bool is_class_method() const { return false; }
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protected:
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explicit ASTNode(SourceRange);
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private:
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// NOTE: These members are carefully ordered so that `m_start_offset` is packed with the padding after RefCounted::m_ref_count.
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// This creates a 4-byte padding hole after `m_end_offset` which is used to pack subclasses better.
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u32 m_start_offset { 0 };
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RefPtr<SourceCode const> m_source_code;
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u32 m_end_offset { 0 };
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};
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// This is a helper class that packs an array of T after the AST node, all in the same allocation.
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template<typename Derived, typename Base, typename T>
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class ASTNodeWithTailArray : public Base {
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public:
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virtual ~ASTNodeWithTailArray() override
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{
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for (auto& value : tail_span())
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value.~T();
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}
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ReadonlySpan<T> tail_span() const { return { tail_data(), tail_size() }; }
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T const* tail_data() const { return reinterpret_cast<T const*>(reinterpret_cast<uintptr_t>(this) + sizeof(Derived)); }
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size_t tail_size() const { return m_tail_size; }
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protected:
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template<typename ActualDerived = Derived, typename... Args>
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static NonnullRefPtr<ActualDerived> create(size_t tail_size, SourceRange source_range, Args&&... args)
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{
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static_assert(sizeof(ActualDerived) == sizeof(Derived), "This leaf class cannot add more members");
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static_assert(alignof(ActualDerived) % alignof(T) == 0, "Need padding for tail array");
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auto* memory = ::operator new(sizeof(ActualDerived) + tail_size * sizeof(T));
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return adopt_ref(*::new (memory) ActualDerived(move(source_range), forward<Args>(args)...));
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}
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ASTNodeWithTailArray(SourceRange source_range, ReadonlySpan<T> values)
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: Base(move(source_range))
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, m_tail_size(values.size())
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{
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VERIFY(values.size() <= NumericLimits<u32>::max());
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for (size_t i = 0; i < values.size(); ++i)
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new (&tail_data()[i]) T(values[i]);
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}
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private:
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T* tail_data() { return reinterpret_cast<T*>(reinterpret_cast<uintptr_t>(this) + sizeof(Derived)); }
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u32 m_tail_size { 0 };
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};
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class Statement : public ASTNode {
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public:
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explicit Statement(SourceRange source_range)
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: ASTNode(move(source_range))
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{
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}
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Bytecode::Executable* bytecode_executable() const { return m_bytecode_executable; }
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void set_bytecode_executable(Bytecode::Executable* bytecode_executable) { m_bytecode_executable = make_handle(bytecode_executable); }
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private:
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Handle<Bytecode::Executable> m_bytecode_executable;
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};
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// 14.13 Labelled Statements, https://tc39.es/ecma262/#sec-labelled-statements
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class LabelledStatement final : public Statement {
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public:
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LabelledStatement(SourceRange source_range, DeprecatedFlyString label, NonnullRefPtr<Statement const> labelled_item)
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: Statement(move(source_range))
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, m_label(move(label))
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, m_labelled_item(move(labelled_item))
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{
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}
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const;
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DeprecatedFlyString const& label() const { return m_label; }
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DeprecatedFlyString& label() { return m_label; }
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NonnullRefPtr<Statement const> const& labelled_item() const { return m_labelled_item; }
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private:
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virtual bool is_labelled_statement() const final { return true; }
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DeprecatedFlyString m_label;
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NonnullRefPtr<Statement const> m_labelled_item;
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};
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class LabelableStatement : public Statement {
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public:
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using Statement::Statement;
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Vector<DeprecatedFlyString> const& labels() const { return m_labels; }
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virtual void add_label(DeprecatedFlyString string) { m_labels.append(move(string)); }
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protected:
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Vector<DeprecatedFlyString> m_labels;
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};
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class IterationStatement : public Statement {
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public:
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using Statement::Statement;
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const;
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private:
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virtual bool is_iteration_statement() const final { return true; }
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};
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class EmptyStatement final : public Statement {
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public:
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explicit EmptyStatement(SourceRange source_range)
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: Statement(move(source_range))
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{
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}
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
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};
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class ErrorStatement final : public Statement {
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public:
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explicit ErrorStatement(SourceRange source_range)
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: Statement(move(source_range))
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{
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}
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};
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class ExpressionStatement final : public Statement {
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public:
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ExpressionStatement(SourceRange source_range, NonnullRefPtr<Expression const> expression)
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: Statement(move(source_range))
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, m_expression(move(expression))
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{
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}
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
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Expression const& expression() const { return m_expression; }
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private:
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virtual bool is_expression_statement() const override { return true; }
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NonnullRefPtr<Expression const> m_expression;
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};
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template<typename Func, typename... Args>
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concept ThrowCompletionOrVoidFunction = requires(Func func, Args... args) {
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{
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func(args...)
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}
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-> SameAs<ThrowCompletionOr<void>>;
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};
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template<typename... Args>
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class ThrowCompletionOrVoidCallback : public Function<ThrowCompletionOr<void>(Args...)> {
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public:
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template<typename CallableType>
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ThrowCompletionOrVoidCallback(CallableType&& callable)
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requires(VoidFunction<CallableType, Args...>)
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: Function<ThrowCompletionOr<void>(Args...)>([callable = forward<CallableType>(callable)](Args... args) {
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callable(args...);
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return ThrowCompletionOr<void> {};
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})
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{
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}
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template<typename CallableType>
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ThrowCompletionOrVoidCallback(CallableType&& callable)
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requires(ThrowCompletionOrVoidFunction<CallableType, Args...>)
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: Function<ThrowCompletionOr<void>(Args...)>(forward<CallableType>(callable))
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{
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}
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};
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class ScopeNode : public Statement {
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public:
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template<typename T, typename... Args>
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T& append(SourceRange range, Args&&... args)
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{
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auto child = create_ast_node<T>(range, forward<Args>(args)...);
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m_children.append(move(child));
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return static_cast<T&>(*m_children.last());
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}
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void append(NonnullRefPtr<Statement const> child)
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{
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m_children.append(move(child));
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}
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void shrink_to_fit()
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{
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m_children.shrink_to_fit();
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m_lexical_declarations.shrink_to_fit();
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m_var_declarations.shrink_to_fit();
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m_functions_hoistable_with_annexB_extension.shrink_to_fit();
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}
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Vector<NonnullRefPtr<Statement const>> const& children() const { return m_children; }
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
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void add_var_scoped_declaration(NonnullRefPtr<Declaration const> variables);
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void add_lexical_declaration(NonnullRefPtr<Declaration const> variables);
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void add_hoisted_function(NonnullRefPtr<FunctionDeclaration const> declaration);
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[[nodiscard]] bool has_lexical_declarations() const { return !m_lexical_declarations.is_empty(); }
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[[nodiscard]] bool has_var_declarations() const { return !m_var_declarations.is_empty(); }
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[[nodiscard]] size_t var_declaration_count() const { return m_var_declarations.size(); }
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[[nodiscard]] size_t lexical_declaration_count() const { return m_lexical_declarations.size(); }
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ThrowCompletionOr<void> for_each_lexically_scoped_declaration(ThrowCompletionOrVoidCallback<Declaration const&>&& callback) const;
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ThrowCompletionOr<void> for_each_lexically_declared_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&& callback) const;
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ThrowCompletionOr<void> for_each_var_declared_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&& callback) const;
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ThrowCompletionOr<void> for_each_var_function_declaration_in_reverse_order(ThrowCompletionOrVoidCallback<FunctionDeclaration const&>&& callback) const;
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ThrowCompletionOr<void> for_each_var_scoped_variable_declaration(ThrowCompletionOrVoidCallback<VariableDeclaration const&>&& callback) const;
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void block_declaration_instantiation(VM&, Environment*) const;
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ThrowCompletionOr<void> for_each_function_hoistable_with_annexB_extension(ThrowCompletionOrVoidCallback<FunctionDeclaration&>&& callback) const;
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Vector<DeprecatedFlyString> const& local_variables_names() const { return m_local_variables_names; }
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size_t add_local_variable(DeprecatedFlyString name)
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{
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auto index = m_local_variables_names.size();
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m_local_variables_names.append(move(name));
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return index;
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}
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protected:
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explicit ScopeNode(SourceRange source_range)
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: Statement(move(source_range))
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{
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}
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private:
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virtual bool is_scope_node() const final { return true; }
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Vector<NonnullRefPtr<Statement const>> m_children;
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Vector<NonnullRefPtr<Declaration const>> m_lexical_declarations;
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Vector<NonnullRefPtr<Declaration const>> m_var_declarations;
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Vector<NonnullRefPtr<FunctionDeclaration const>> m_functions_hoistable_with_annexB_extension;
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Vector<DeprecatedFlyString> m_local_variables_names;
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};
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// ImportEntry Record, https://tc39.es/ecma262/#table-importentry-record-fields
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struct ImportEntry {
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Optional<DeprecatedFlyString> import_name; // [[ImportName]]: stored string if Optional is not empty, NAMESPACE-OBJECT otherwise
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DeprecatedFlyString local_name; // [[LocalName]]
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ImportEntry(Optional<DeprecatedFlyString> import_name_, DeprecatedFlyString local_name_)
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: import_name(move(import_name_))
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, local_name(move(local_name_))
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{
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}
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bool is_namespace() const { return !import_name.has_value(); }
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ModuleRequest const& module_request() const
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{
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VERIFY(m_module_request);
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return *m_module_request;
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}
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private:
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friend class ImportStatement;
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ModuleRequest* m_module_request = nullptr; // [[ModuleRequest]]
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};
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class ImportStatement final : public Statement {
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public:
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explicit ImportStatement(SourceRange source_range, ModuleRequest from_module, Vector<ImportEntry> entries = {})
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: Statement(move(source_range))
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, m_module_request(move(from_module))
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, m_entries(move(entries))
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{
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for (auto& entry : m_entries)
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entry.m_module_request = &m_module_request;
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}
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virtual void dump(int indent) const override;
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virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
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bool has_bound_name(DeprecatedFlyString const& name) const;
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Vector<ImportEntry> const& entries() const { return m_entries; }
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ModuleRequest const& module_request() const { return m_module_request; }
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private:
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ModuleRequest m_module_request;
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Vector<ImportEntry> m_entries;
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};
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// ExportEntry Record, https://tc39.es/ecma262/#table-exportentry-records
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struct ExportEntry {
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enum class Kind {
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NamedExport,
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ModuleRequestAll,
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ModuleRequestAllButDefault,
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// EmptyNamedExport is a special type for export {} from "module",
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// which should import the module without getting any of the exports
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// however we don't want give it a fake export name which may get
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// duplicates
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EmptyNamedExport,
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} kind;
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Optional<DeprecatedFlyString> export_name; // [[ExportName]]
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Optional<DeprecatedFlyString> local_or_import_name; // Either [[ImportName]] or [[LocalName]]
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ExportEntry(Kind export_kind, Optional<DeprecatedFlyString> export_name_, Optional<DeprecatedFlyString> local_or_import_name_)
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: kind(export_kind)
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, export_name(move(export_name_))
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, local_or_import_name(move(local_or_import_name_))
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{
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}
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bool is_module_request() const
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{
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return m_module_request != nullptr;
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}
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static ExportEntry indirect_export_entry(ModuleRequest const& module_request, Optional<DeprecatedFlyString> export_name, Optional<DeprecatedFlyString> import_name)
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{
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ExportEntry entry { Kind::NamedExport, move(export_name), move(import_name) };
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entry.m_module_request = &module_request;
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return entry;
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}
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ModuleRequest const& module_request() const
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{
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VERIFY(m_module_request);
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return *m_module_request;
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}
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private:
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ModuleRequest const* m_module_request { nullptr }; // [[ModuleRequest]]
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friend class ExportStatement;
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public:
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static ExportEntry named_export(DeprecatedFlyString export_name, DeprecatedFlyString local_name)
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{
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return ExportEntry { Kind::NamedExport, move(export_name), move(local_name) };
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}
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static ExportEntry all_but_default_entry()
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{
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return ExportEntry { Kind::ModuleRequestAllButDefault, {}, {} };
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}
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static ExportEntry all_module_request(DeprecatedFlyString export_name)
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{
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return ExportEntry { Kind::ModuleRequestAll, move(export_name), {} };
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}
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static ExportEntry empty_named_export()
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{
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return ExportEntry { Kind::EmptyNamedExport, {}, {} };
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}
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};
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class ExportStatement final : public Statement {
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public:
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static DeprecatedFlyString local_name_for_default;
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ExportStatement(SourceRange source_range, RefPtr<ASTNode const> statement, Vector<ExportEntry> entries, bool is_default_export, Optional<ModuleRequest> module_request)
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: Statement(move(source_range))
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, m_statement(move(statement))
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, m_entries(move(entries))
|
|
, m_is_default_export(is_default_export)
|
|
, m_module_request(move(module_request))
|
|
{
|
|
if (m_module_request.has_value()) {
|
|
for (auto& entry : m_entries)
|
|
entry.m_module_request = &m_module_request.value();
|
|
}
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
bool has_export(DeprecatedFlyString const& export_name) const;
|
|
|
|
bool has_statement() const { return m_statement; }
|
|
Vector<ExportEntry> const& entries() const { return m_entries; }
|
|
|
|
bool is_default_export() const { return m_is_default_export; }
|
|
|
|
ASTNode const& statement() const
|
|
{
|
|
VERIFY(m_statement);
|
|
return *m_statement;
|
|
}
|
|
|
|
ModuleRequest const& module_request() const
|
|
{
|
|
return m_module_request.value();
|
|
}
|
|
|
|
private:
|
|
RefPtr<ASTNode const> m_statement;
|
|
Vector<ExportEntry> m_entries;
|
|
bool m_is_default_export { false };
|
|
Optional<ModuleRequest> m_module_request;
|
|
};
|
|
|
|
class Program final : public ScopeNode {
|
|
public:
|
|
enum class Type {
|
|
Script,
|
|
Module
|
|
};
|
|
|
|
explicit Program(SourceRange source_range, Type program_type)
|
|
: ScopeNode(move(source_range))
|
|
, m_type(program_type)
|
|
{
|
|
}
|
|
|
|
bool is_strict_mode() const { return m_is_strict_mode; }
|
|
void set_strict_mode() { m_is_strict_mode = true; }
|
|
|
|
Type type() const { return m_type; }
|
|
|
|
void append_import(NonnullRefPtr<ImportStatement const> import_statement)
|
|
{
|
|
m_imports.append(import_statement);
|
|
append(move(import_statement));
|
|
}
|
|
|
|
void append_export(NonnullRefPtr<ExportStatement const> export_statement)
|
|
{
|
|
m_exports.append(export_statement);
|
|
append(move(export_statement));
|
|
}
|
|
|
|
Vector<NonnullRefPtr<ImportStatement const>> const& imports() const { return m_imports; }
|
|
Vector<NonnullRefPtr<ExportStatement const>> const& exports() const { return m_exports; }
|
|
|
|
Vector<NonnullRefPtr<ImportStatement const>>& imports() { return m_imports; }
|
|
Vector<NonnullRefPtr<ExportStatement const>>& exports() { return m_exports; }
|
|
|
|
bool has_top_level_await() const { return m_has_top_level_await; }
|
|
void set_has_top_level_await() { m_has_top_level_await = true; }
|
|
|
|
ThrowCompletionOr<void> global_declaration_instantiation(VM&, GlobalEnvironment&) const;
|
|
|
|
private:
|
|
virtual bool is_program() const override { return true; }
|
|
|
|
bool m_is_strict_mode { false };
|
|
Type m_type { Type::Script };
|
|
|
|
Vector<NonnullRefPtr<ImportStatement const>> m_imports;
|
|
Vector<NonnullRefPtr<ExportStatement const>> m_exports;
|
|
bool m_has_top_level_await { false };
|
|
};
|
|
|
|
class BlockStatement final : public ScopeNode {
|
|
public:
|
|
explicit BlockStatement(SourceRange source_range)
|
|
: ScopeNode(move(source_range))
|
|
{
|
|
}
|
|
};
|
|
|
|
class FunctionBody final : public ScopeNode {
|
|
public:
|
|
explicit FunctionBody(SourceRange source_range)
|
|
: ScopeNode(move(source_range))
|
|
{
|
|
}
|
|
|
|
void set_strict_mode() { m_in_strict_mode = true; }
|
|
|
|
bool in_strict_mode() const { return m_in_strict_mode; }
|
|
|
|
private:
|
|
bool m_in_strict_mode { false };
|
|
};
|
|
|
|
class Expression : public ASTNode {
|
|
public:
|
|
explicit Expression(SourceRange source_range)
|
|
: ASTNode(move(source_range))
|
|
{
|
|
}
|
|
};
|
|
|
|
class Declaration : public Statement {
|
|
public:
|
|
explicit Declaration(SourceRange source_range)
|
|
: Statement(move(source_range))
|
|
{
|
|
}
|
|
|
|
virtual ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&& callback) const = 0;
|
|
|
|
// 8.1.3 Static Semantics: IsConstantDeclaration, https://tc39.es/ecma262/#sec-static-semantics-isconstantdeclaration
|
|
virtual bool is_constant_declaration() const { return false; }
|
|
|
|
virtual bool is_lexical_declaration() const { return false; }
|
|
};
|
|
|
|
class ErrorDeclaration final : public Declaration {
|
|
public:
|
|
explicit ErrorDeclaration(SourceRange source_range)
|
|
: Declaration(move(source_range))
|
|
{
|
|
}
|
|
|
|
ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&&) const override
|
|
{
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
};
|
|
|
|
struct BindingPattern : RefCounted<BindingPattern> {
|
|
// This covers both BindingProperty and BindingElement, hence the more generic name
|
|
struct BindingEntry {
|
|
// If this entry represents a BindingElement, then name will be Empty
|
|
Variant<NonnullRefPtr<Identifier const>, NonnullRefPtr<Expression const>, Empty> name {};
|
|
Variant<NonnullRefPtr<Identifier const>, NonnullRefPtr<BindingPattern const>, NonnullRefPtr<MemberExpression const>, Empty> alias {};
|
|
RefPtr<Expression const> initializer {};
|
|
bool is_rest { false };
|
|
|
|
bool is_elision() const { return name.has<Empty>() && alias.has<Empty>(); }
|
|
};
|
|
|
|
enum class Kind {
|
|
Array,
|
|
Object,
|
|
};
|
|
|
|
void dump(int indent) const;
|
|
|
|
ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&& callback) const;
|
|
|
|
bool contains_expression() const;
|
|
|
|
Vector<BindingEntry> entries;
|
|
Kind kind { Kind::Object };
|
|
};
|
|
|
|
class Identifier final : public Expression {
|
|
public:
|
|
explicit Identifier(SourceRange source_range, DeprecatedFlyString string)
|
|
: Expression(move(source_range))
|
|
, m_string(move(string))
|
|
{
|
|
}
|
|
|
|
DeprecatedFlyString const& string() const { return m_string; }
|
|
|
|
bool is_local() const { return m_local_variable_index.has_value(); }
|
|
size_t local_variable_index() const
|
|
{
|
|
VERIFY(m_local_variable_index.has_value());
|
|
return m_local_variable_index.value();
|
|
}
|
|
void set_local_variable_index(size_t index) { m_local_variable_index = index; }
|
|
|
|
bool is_global() const { return m_is_global; }
|
|
void set_is_global() { m_is_global = true; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
virtual bool is_identifier() const override { return true; }
|
|
|
|
DeprecatedFlyString m_string;
|
|
|
|
Optional<size_t> m_local_variable_index;
|
|
bool m_is_global { false };
|
|
};
|
|
|
|
struct FunctionParameter {
|
|
Variant<NonnullRefPtr<Identifier const>, NonnullRefPtr<BindingPattern const>> binding;
|
|
RefPtr<Expression const> default_value;
|
|
bool is_rest { false };
|
|
Handle<Bytecode::Executable> bytecode_executable {};
|
|
};
|
|
|
|
class FunctionNode {
|
|
public:
|
|
StringView name() const { return m_name ? m_name->string().view() : ""sv; }
|
|
RefPtr<Identifier const> name_identifier() const { return m_name; }
|
|
ByteString const& source_text() const { return m_source_text; }
|
|
Statement const& body() const { return *m_body; }
|
|
Vector<FunctionParameter> const& parameters() const { return m_parameters; }
|
|
i32 function_length() const { return m_function_length; }
|
|
Vector<DeprecatedFlyString> const& local_variables_names() const { return m_local_variables_names; }
|
|
bool is_strict_mode() const { return m_is_strict_mode; }
|
|
bool might_need_arguments_object() const { return m_might_need_arguments_object; }
|
|
bool contains_direct_call_to_eval() const { return m_contains_direct_call_to_eval; }
|
|
bool is_arrow_function() const { return m_is_arrow_function; }
|
|
FunctionKind kind() const { return m_kind; }
|
|
|
|
protected:
|
|
FunctionNode(RefPtr<Identifier const> name, ByteString source_text, NonnullRefPtr<Statement const> body, Vector<FunctionParameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval, bool is_arrow_function, Vector<DeprecatedFlyString> local_variables_names)
|
|
: m_name(move(name))
|
|
, m_source_text(move(source_text))
|
|
, m_body(move(body))
|
|
, m_parameters(move(parameters))
|
|
, m_function_length(function_length)
|
|
, m_kind(kind)
|
|
, m_is_strict_mode(is_strict_mode)
|
|
, m_might_need_arguments_object(might_need_arguments_object)
|
|
, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
|
|
, m_is_arrow_function(is_arrow_function)
|
|
, m_local_variables_names(move(local_variables_names))
|
|
{
|
|
if (m_is_arrow_function)
|
|
VERIFY(!m_might_need_arguments_object);
|
|
}
|
|
|
|
void dump(int indent, ByteString const& class_name) const;
|
|
|
|
RefPtr<Identifier const> m_name { nullptr };
|
|
|
|
private:
|
|
ByteString m_source_text;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
Vector<FunctionParameter> const m_parameters;
|
|
i32 const m_function_length;
|
|
FunctionKind m_kind;
|
|
bool m_is_strict_mode : 1 { false };
|
|
bool m_might_need_arguments_object : 1 { false };
|
|
bool m_contains_direct_call_to_eval : 1 { false };
|
|
bool m_is_arrow_function : 1 { false };
|
|
|
|
Vector<DeprecatedFlyString> m_local_variables_names;
|
|
};
|
|
|
|
class FunctionDeclaration final
|
|
: public Declaration
|
|
, public FunctionNode {
|
|
public:
|
|
static bool must_have_name() { return true; }
|
|
|
|
FunctionDeclaration(SourceRange source_range, RefPtr<Identifier const> name, ByteString source_text, NonnullRefPtr<Statement const> body, Vector<FunctionParameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval, Vector<DeprecatedFlyString> local_variables_names)
|
|
: Declaration(move(source_range))
|
|
, FunctionNode(move(name), move(source_text), move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, false, move(local_variables_names))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&&) const override;
|
|
|
|
virtual bool is_function_declaration() const override { return true; }
|
|
|
|
void set_should_do_additional_annexB_steps() { m_is_hoisted = true; }
|
|
|
|
private:
|
|
bool m_is_hoisted { false };
|
|
};
|
|
|
|
class FunctionExpression final
|
|
: public Expression
|
|
, public FunctionNode {
|
|
public:
|
|
static bool must_have_name() { return false; }
|
|
|
|
FunctionExpression(SourceRange source_range, RefPtr<Identifier const> name, ByteString source_text, NonnullRefPtr<Statement const> body, Vector<FunctionParameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval, Vector<DeprecatedFlyString> local_variables_names, bool is_arrow_function = false)
|
|
: Expression(move(source_range))
|
|
, FunctionNode(move(name), move(source_text), move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, is_arrow_function, move(local_variables_names))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode_with_lhs_name(Bytecode::Generator&, Optional<Bytecode::IdentifierTableIndex> lhs_name, Optional<Bytecode::Operand> preferred_dst = {}) const;
|
|
|
|
bool has_name() const { return !name().is_empty(); }
|
|
|
|
Value instantiate_ordinary_function_expression(VM&, DeprecatedFlyString given_name) const;
|
|
|
|
private:
|
|
virtual bool is_function_expression() const override { return true; }
|
|
};
|
|
|
|
class ErrorExpression final : public Expression {
|
|
public:
|
|
explicit ErrorExpression(SourceRange source_range)
|
|
: Expression(move(source_range))
|
|
{
|
|
}
|
|
};
|
|
|
|
class YieldExpression final : public Expression {
|
|
public:
|
|
explicit YieldExpression(SourceRange source_range, RefPtr<Expression const> argument, bool is_yield_from)
|
|
: Expression(move(source_range))
|
|
, m_argument(move(argument))
|
|
, m_is_yield_from(is_yield_from)
|
|
{
|
|
}
|
|
|
|
Expression const* argument() const { return m_argument; }
|
|
bool is_yield_from() const { return m_is_yield_from; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
RefPtr<Expression const> m_argument;
|
|
bool m_is_yield_from { false };
|
|
};
|
|
|
|
class AwaitExpression final : public Expression {
|
|
public:
|
|
explicit AwaitExpression(SourceRange source_range, NonnullRefPtr<Expression const> argument)
|
|
: Expression(move(source_range))
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_argument;
|
|
};
|
|
|
|
class ReturnStatement final : public Statement {
|
|
public:
|
|
explicit ReturnStatement(SourceRange source_range, RefPtr<Expression const> argument)
|
|
: Statement(move(source_range))
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
Expression const* argument() const { return m_argument; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
RefPtr<Expression const> m_argument;
|
|
};
|
|
|
|
class IfStatement final : public Statement {
|
|
public:
|
|
IfStatement(SourceRange source_range, NonnullRefPtr<Expression const> predicate, NonnullRefPtr<Statement const> consequent, RefPtr<Statement const> alternate)
|
|
: Statement(move(source_range))
|
|
, m_predicate(move(predicate))
|
|
, m_consequent(move(consequent))
|
|
, m_alternate(move(alternate))
|
|
{
|
|
}
|
|
|
|
Expression const& predicate() const { return *m_predicate; }
|
|
Statement const& consequent() const { return *m_consequent; }
|
|
Statement const* alternate() const { return m_alternate; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_predicate;
|
|
NonnullRefPtr<Statement const> m_consequent;
|
|
RefPtr<Statement const> m_alternate;
|
|
};
|
|
|
|
class WhileStatement final : public IterationStatement {
|
|
public:
|
|
WhileStatement(SourceRange source_range, NonnullRefPtr<Expression const> test, NonnullRefPtr<Statement const> body)
|
|
: IterationStatement(move(source_range))
|
|
, m_test(move(test))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
Expression const& test() const { return *m_test; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_test;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
class DoWhileStatement final : public IterationStatement {
|
|
public:
|
|
DoWhileStatement(SourceRange source_range, NonnullRefPtr<Expression const> test, NonnullRefPtr<Statement const> body)
|
|
: IterationStatement(move(source_range))
|
|
, m_test(move(test))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
Expression const& test() const { return *m_test; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_test;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
class WithStatement final : public Statement {
|
|
public:
|
|
WithStatement(SourceRange source_range, NonnullRefPtr<Expression const> object, NonnullRefPtr<Statement const> body)
|
|
: Statement(move(source_range))
|
|
, m_object(move(object))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
Expression const& object() const { return *m_object; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_object;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
class ForStatement final : public IterationStatement {
|
|
public:
|
|
ForStatement(SourceRange source_range, RefPtr<ASTNode const> init, RefPtr<Expression const> test, RefPtr<Expression const> update, NonnullRefPtr<Statement const> body)
|
|
: IterationStatement(move(source_range))
|
|
, m_init(move(init))
|
|
, m_test(move(test))
|
|
, m_update(move(update))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
ASTNode const* init() const { return m_init; }
|
|
Expression const* test() const { return m_test; }
|
|
Expression const* update() const { return m_update; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
RefPtr<ASTNode const> m_init;
|
|
RefPtr<Expression const> m_test;
|
|
RefPtr<Expression const> m_update;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
class ForInStatement final : public IterationStatement {
|
|
public:
|
|
ForInStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> lhs, NonnullRefPtr<Expression const> rhs, NonnullRefPtr<Statement const> body)
|
|
: IterationStatement(move(source_range))
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
auto const& lhs() const { return m_lhs; }
|
|
Expression const& rhs() const { return *m_rhs; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> m_lhs;
|
|
NonnullRefPtr<Expression const> m_rhs;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
class ForOfStatement final : public IterationStatement {
|
|
public:
|
|
ForOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> lhs, NonnullRefPtr<Expression const> rhs, NonnullRefPtr<Statement const> body)
|
|
: IterationStatement(move(source_range))
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
auto const& lhs() const { return m_lhs; }
|
|
Expression const& rhs() const { return *m_rhs; }
|
|
Statement const& body() const { return *m_body; }
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> m_lhs;
|
|
NonnullRefPtr<Expression const> m_rhs;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
class ForAwaitOfStatement final : public IterationStatement {
|
|
public:
|
|
ForAwaitOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> lhs, NonnullRefPtr<Expression const> rhs, NonnullRefPtr<Statement const> body)
|
|
: IterationStatement(move(source_range))
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> m_lhs;
|
|
NonnullRefPtr<Expression const> m_rhs;
|
|
NonnullRefPtr<Statement const> m_body;
|
|
};
|
|
|
|
enum class BinaryOp {
|
|
Addition,
|
|
Subtraction,
|
|
Multiplication,
|
|
Division,
|
|
Modulo,
|
|
Exponentiation,
|
|
StrictlyEquals,
|
|
StrictlyInequals,
|
|
LooselyEquals,
|
|
LooselyInequals,
|
|
GreaterThan,
|
|
GreaterThanEquals,
|
|
LessThan,
|
|
LessThanEquals,
|
|
BitwiseAnd,
|
|
BitwiseOr,
|
|
BitwiseXor,
|
|
LeftShift,
|
|
RightShift,
|
|
UnsignedRightShift,
|
|
In,
|
|
InstanceOf,
|
|
};
|
|
|
|
class BinaryExpression final : public Expression {
|
|
public:
|
|
BinaryExpression(SourceRange source_range, BinaryOp op, NonnullRefPtr<Expression const> lhs, NonnullRefPtr<Expression const> rhs)
|
|
: Expression(move(source_range))
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
BinaryOp m_op;
|
|
NonnullRefPtr<Expression const> m_lhs;
|
|
NonnullRefPtr<Expression const> m_rhs;
|
|
};
|
|
|
|
enum class LogicalOp {
|
|
And,
|
|
Or,
|
|
NullishCoalescing,
|
|
};
|
|
|
|
class LogicalExpression final : public Expression {
|
|
public:
|
|
LogicalExpression(SourceRange source_range, LogicalOp op, NonnullRefPtr<Expression const> lhs, NonnullRefPtr<Expression const> rhs)
|
|
: Expression(move(source_range))
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
LogicalOp m_op;
|
|
NonnullRefPtr<Expression const> m_lhs;
|
|
NonnullRefPtr<Expression const> m_rhs;
|
|
};
|
|
|
|
enum class UnaryOp {
|
|
BitwiseNot,
|
|
Not,
|
|
Plus,
|
|
Minus,
|
|
Typeof,
|
|
Void,
|
|
Delete,
|
|
};
|
|
|
|
class UnaryExpression final : public Expression {
|
|
public:
|
|
UnaryExpression(SourceRange source_range, UnaryOp op, NonnullRefPtr<Expression const> lhs)
|
|
: Expression(move(source_range))
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
UnaryOp m_op;
|
|
NonnullRefPtr<Expression const> m_lhs;
|
|
};
|
|
|
|
class SequenceExpression final : public Expression {
|
|
public:
|
|
SequenceExpression(SourceRange source_range, Vector<NonnullRefPtr<Expression const>> expressions)
|
|
: Expression(move(source_range))
|
|
, m_expressions(move(expressions))
|
|
{
|
|
VERIFY(m_expressions.size() >= 2);
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
Vector<NonnullRefPtr<Expression const>> m_expressions;
|
|
};
|
|
|
|
class PrimitiveLiteral : public Expression {
|
|
public:
|
|
virtual Value value() const = 0;
|
|
|
|
protected:
|
|
explicit PrimitiveLiteral(SourceRange source_range)
|
|
: Expression(move(source_range))
|
|
{
|
|
}
|
|
};
|
|
|
|
class BooleanLiteral final : public PrimitiveLiteral {
|
|
public:
|
|
explicit BooleanLiteral(SourceRange source_range, bool value)
|
|
: PrimitiveLiteral(move(source_range))
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
virtual Value value() const override { return Value(m_value); }
|
|
|
|
private:
|
|
bool m_value { false };
|
|
};
|
|
|
|
class NumericLiteral final : public PrimitiveLiteral {
|
|
public:
|
|
explicit NumericLiteral(SourceRange source_range, double value)
|
|
: PrimitiveLiteral(move(source_range))
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
virtual Value value() const override { return m_value; }
|
|
|
|
private:
|
|
Value m_value;
|
|
};
|
|
|
|
class BigIntLiteral final : public Expression {
|
|
public:
|
|
explicit BigIntLiteral(SourceRange source_range, ByteString value)
|
|
: Expression(move(source_range))
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
ByteString m_value;
|
|
};
|
|
|
|
class StringLiteral final : public Expression {
|
|
public:
|
|
explicit StringLiteral(SourceRange source_range, ByteString value)
|
|
: Expression(move(source_range))
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
StringView value() const { return m_value; }
|
|
|
|
private:
|
|
virtual bool is_string_literal() const override { return true; }
|
|
|
|
ByteString m_value;
|
|
};
|
|
|
|
class NullLiteral final : public PrimitiveLiteral {
|
|
public:
|
|
explicit NullLiteral(SourceRange source_range)
|
|
: PrimitiveLiteral(move(source_range))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
virtual Value value() const override { return js_null(); }
|
|
};
|
|
|
|
class RegExpLiteral final : public Expression {
|
|
public:
|
|
RegExpLiteral(SourceRange source_range, regex::Parser::Result parsed_regex, ByteString parsed_pattern, regex::RegexOptions<ECMAScriptFlags> parsed_flags, ByteString pattern, ByteString flags)
|
|
: Expression(move(source_range))
|
|
, m_parsed_regex(move(parsed_regex))
|
|
, m_parsed_pattern(move(parsed_pattern))
|
|
, m_parsed_flags(parsed_flags)
|
|
, m_pattern(move(pattern))
|
|
, m_flags(move(flags))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
regex::Parser::Result const& parsed_regex() const { return m_parsed_regex; }
|
|
ByteString const& parsed_pattern() const { return m_parsed_pattern; }
|
|
regex::RegexOptions<ECMAScriptFlags> const& parsed_flags() const { return m_parsed_flags; }
|
|
ByteString const& pattern() const { return m_pattern; }
|
|
ByteString const& flags() const { return m_flags; }
|
|
|
|
private:
|
|
regex::Parser::Result m_parsed_regex;
|
|
ByteString m_parsed_pattern;
|
|
regex::RegexOptions<ECMAScriptFlags> m_parsed_flags;
|
|
ByteString m_pattern;
|
|
ByteString m_flags;
|
|
};
|
|
|
|
class PrivateIdentifier final : public Expression {
|
|
public:
|
|
explicit PrivateIdentifier(SourceRange source_range, DeprecatedFlyString string)
|
|
: Expression(move(source_range))
|
|
, m_string(move(string))
|
|
{
|
|
}
|
|
|
|
DeprecatedFlyString const& string() const { return m_string; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual bool is_private_identifier() const override { return true; }
|
|
|
|
private:
|
|
DeprecatedFlyString m_string;
|
|
};
|
|
|
|
class ClassElement : public ASTNode {
|
|
public:
|
|
ClassElement(SourceRange source_range, bool is_static)
|
|
: ASTNode(move(source_range))
|
|
, m_is_static(is_static)
|
|
{
|
|
}
|
|
|
|
enum class ElementKind {
|
|
Method,
|
|
Field,
|
|
StaticInitializer,
|
|
};
|
|
|
|
virtual ElementKind class_element_kind() const = 0;
|
|
bool is_static() const { return m_is_static; }
|
|
|
|
// We use the Completion also as a ClassStaticBlockDefinition Record.
|
|
using ClassValue = Variant<ClassFieldDefinition, Completion, PrivateElement>;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(VM&, Object& home_object) const = 0;
|
|
|
|
virtual Optional<DeprecatedFlyString> private_bound_identifier() const { return {}; }
|
|
|
|
private:
|
|
bool m_is_static { false };
|
|
};
|
|
|
|
class ClassMethod final : public ClassElement {
|
|
public:
|
|
enum class Kind {
|
|
Method,
|
|
Getter,
|
|
Setter,
|
|
};
|
|
|
|
ClassMethod(SourceRange source_range, NonnullRefPtr<Expression const> key, NonnullRefPtr<FunctionExpression const> function, Kind kind, bool is_static)
|
|
: ClassElement(move(source_range), is_static)
|
|
, m_key(move(key))
|
|
, m_function(move(function))
|
|
, m_kind(kind)
|
|
{
|
|
}
|
|
|
|
Expression const& key() const { return *m_key; }
|
|
Kind kind() const { return m_kind; }
|
|
virtual ElementKind class_element_kind() const override { return ElementKind::Method; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(VM&, Object& home_object) const override;
|
|
virtual Optional<DeprecatedFlyString> private_bound_identifier() const override;
|
|
|
|
private:
|
|
virtual bool is_class_method() const override { return true; }
|
|
NonnullRefPtr<Expression const> m_key;
|
|
NonnullRefPtr<FunctionExpression const> m_function;
|
|
Kind m_kind;
|
|
};
|
|
|
|
class ClassField final : public ClassElement {
|
|
public:
|
|
ClassField(SourceRange source_range, NonnullRefPtr<Expression const> key, RefPtr<Expression const> init, bool contains_direct_call_to_eval, bool is_static)
|
|
: ClassElement(move(source_range), is_static)
|
|
, m_key(move(key))
|
|
, m_initializer(move(init))
|
|
, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
|
|
{
|
|
}
|
|
|
|
Expression const& key() const { return *m_key; }
|
|
RefPtr<Expression const> const& initializer() const { return m_initializer; }
|
|
RefPtr<Expression const>& initializer() { return m_initializer; }
|
|
|
|
virtual ElementKind class_element_kind() const override { return ElementKind::Field; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(VM&, Object& home_object) const override;
|
|
virtual Optional<DeprecatedFlyString> private_bound_identifier() const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_key;
|
|
RefPtr<Expression const> m_initializer;
|
|
bool m_contains_direct_call_to_eval { false };
|
|
};
|
|
|
|
class StaticInitializer final : public ClassElement {
|
|
public:
|
|
StaticInitializer(SourceRange source_range, NonnullRefPtr<FunctionBody> function_body, bool contains_direct_call_to_eval)
|
|
: ClassElement(move(source_range), true)
|
|
, m_function_body(move(function_body))
|
|
, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
|
|
{
|
|
}
|
|
|
|
virtual ElementKind class_element_kind() const override { return ElementKind::StaticInitializer; }
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(VM&, Object& home_object) const override;
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<FunctionBody> m_function_body;
|
|
bool m_contains_direct_call_to_eval { false };
|
|
};
|
|
|
|
class SuperExpression final : public Expression {
|
|
public:
|
|
explicit SuperExpression(SourceRange source_range)
|
|
: Expression(move(source_range))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
virtual bool is_super_expression() const override { return true; }
|
|
};
|
|
|
|
class ClassExpression final : public Expression {
|
|
public:
|
|
ClassExpression(SourceRange source_range, RefPtr<Identifier const> name, ByteString source_text, RefPtr<FunctionExpression const> constructor, RefPtr<Expression const> super_class, Vector<NonnullRefPtr<ClassElement const>> elements)
|
|
: Expression(move(source_range))
|
|
, m_name(move(name))
|
|
, m_source_text(move(source_text))
|
|
, m_constructor(move(constructor))
|
|
, m_super_class(move(super_class))
|
|
, m_elements(move(elements))
|
|
{
|
|
}
|
|
|
|
StringView name() const { return m_name ? m_name->string().view() : ""sv; }
|
|
|
|
ByteString const& source_text() const { return m_source_text; }
|
|
RefPtr<FunctionExpression const> constructor() const { return m_constructor; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode_with_lhs_name(Bytecode::Generator&, Optional<Bytecode::IdentifierTableIndex> lhs_name, Optional<Bytecode::Operand> preferred_dst = {}) const;
|
|
|
|
bool has_name() const { return m_name; }
|
|
|
|
ThrowCompletionOr<ECMAScriptFunctionObject*> class_definition_evaluation(VM&, Optional<DeprecatedFlyString> const& binding_name = {}, DeprecatedFlyString const& class_name = {}) const;
|
|
ThrowCompletionOr<ECMAScriptFunctionObject*> create_class_constructor(VM&, Environment* class_environment, Environment* environment, Value super_class, Optional<DeprecatedFlyString> const& binding_name = {}, DeprecatedFlyString const& class_name = {}) const;
|
|
|
|
private:
|
|
virtual bool is_class_expression() const override { return true; }
|
|
|
|
friend ClassDeclaration;
|
|
|
|
RefPtr<Identifier const> m_name;
|
|
ByteString m_source_text;
|
|
RefPtr<FunctionExpression const> m_constructor;
|
|
RefPtr<Expression const> m_super_class;
|
|
Vector<NonnullRefPtr<ClassElement const>> m_elements;
|
|
};
|
|
|
|
class ClassDeclaration final : public Declaration {
|
|
public:
|
|
ClassDeclaration(SourceRange source_range, NonnullRefPtr<ClassExpression const> class_expression)
|
|
: Declaration(move(source_range))
|
|
, m_class_expression(move(class_expression))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&&) const override;
|
|
|
|
virtual bool is_lexical_declaration() const override { return true; }
|
|
|
|
StringView name() const { return m_class_expression->name(); }
|
|
|
|
private:
|
|
virtual bool is_class_declaration() const override { return true; }
|
|
|
|
friend ExportStatement;
|
|
|
|
NonnullRefPtr<ClassExpression const> m_class_expression;
|
|
};
|
|
|
|
// We use this class to mimic Initializer : = AssignmentExpression of
|
|
// 10.2.1.3 Runtime Semantics: EvaluateBody, https://tc39.es/ecma262/#sec-runtime-semantics-evaluatebody
|
|
class ClassFieldInitializerStatement final : public Statement {
|
|
public:
|
|
ClassFieldInitializerStatement(SourceRange source_range, NonnullRefPtr<Expression const> expression, DeprecatedFlyString field_name)
|
|
: Statement(move(source_range))
|
|
, m_expression(move(expression))
|
|
, m_class_field_identifier_name(move(field_name))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_expression;
|
|
DeprecatedFlyString m_class_field_identifier_name; // [[ClassFieldIdentifierName]]
|
|
};
|
|
|
|
class SpreadExpression final : public Expression {
|
|
public:
|
|
explicit SpreadExpression(SourceRange source_range, NonnullRefPtr<Expression const> target)
|
|
: Expression(move(source_range))
|
|
, m_target(move(target))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_target;
|
|
};
|
|
|
|
class ThisExpression final : public Expression {
|
|
public:
|
|
explicit ThisExpression(SourceRange source_range)
|
|
: Expression(move(source_range))
|
|
{
|
|
}
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
};
|
|
|
|
struct CallExpressionArgument {
|
|
NonnullRefPtr<Expression const> value;
|
|
bool is_spread;
|
|
};
|
|
|
|
enum InvocationStyleEnum {
|
|
Parenthesized,
|
|
NotParenthesized,
|
|
};
|
|
|
|
enum InsideParenthesesEnum {
|
|
InsideParentheses,
|
|
NotInsideParentheses,
|
|
};
|
|
|
|
class CallExpression : public ASTNodeWithTailArray<CallExpression, Expression, CallExpressionArgument> {
|
|
friend class ASTNodeWithTailArray;
|
|
|
|
InvocationStyleEnum m_invocation_style;
|
|
InsideParenthesesEnum m_inside_parentheses;
|
|
|
|
public:
|
|
using Argument = CallExpressionArgument;
|
|
|
|
static NonnullRefPtr<CallExpression> create(SourceRange, NonnullRefPtr<Expression const> callee, ReadonlySpan<Argument> arguments, InvocationStyleEnum invocation_style, InsideParenthesesEnum inside_parens);
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
Expression const& callee() const { return m_callee; }
|
|
|
|
ReadonlySpan<Argument> arguments() const { return tail_span(); }
|
|
|
|
bool is_parenthesized() const { return m_invocation_style == InvocationStyleEnum::Parenthesized; }
|
|
bool is_inside_parens() const { return m_inside_parentheses == InsideParenthesesEnum::InsideParentheses; }
|
|
void set_inside_parens() { m_inside_parentheses = InsideParenthesesEnum::InsideParentheses; }
|
|
|
|
protected:
|
|
CallExpression(SourceRange source_range, NonnullRefPtr<Expression const> callee, ReadonlySpan<Argument> arguments, InvocationStyleEnum invocation_style, InsideParenthesesEnum inside_parens = InsideParenthesesEnum::NotInsideParentheses)
|
|
: ASTNodeWithTailArray(move(source_range), arguments)
|
|
, m_invocation_style(invocation_style)
|
|
, m_inside_parentheses(inside_parens)
|
|
, m_callee(move(callee))
|
|
{
|
|
}
|
|
|
|
virtual bool is_call_expression() const override { return true; }
|
|
|
|
Optional<ByteString> expression_string() const;
|
|
|
|
NonnullRefPtr<Expression const> m_callee;
|
|
};
|
|
|
|
class NewExpression final : public CallExpression {
|
|
friend class ASTNodeWithTailArray;
|
|
|
|
public:
|
|
static NonnullRefPtr<NewExpression> create(SourceRange, NonnullRefPtr<Expression const> callee, ReadonlySpan<Argument> arguments, InvocationStyleEnum invocation_style, InsideParenthesesEnum inside_parens);
|
|
|
|
virtual bool is_new_expression() const override { return true; }
|
|
|
|
private:
|
|
NewExpression(SourceRange source_range, NonnullRefPtr<Expression const> callee, ReadonlySpan<Argument> arguments, InvocationStyleEnum invocation_style, InsideParenthesesEnum inside_parens)
|
|
: CallExpression(move(source_range), move(callee), arguments, invocation_style, inside_parens)
|
|
{
|
|
}
|
|
};
|
|
|
|
static_assert(sizeof(NewExpression) == sizeof(CallExpression), "Adding members to NewExpression will break CallExpression memory layout");
|
|
|
|
class SuperCall final : public Expression {
|
|
public:
|
|
// This is here to be able to make a constructor like
|
|
// constructor(...args) { super(...args); } which does not use @@iterator of %Array.prototype%.
|
|
enum class IsPartOfSyntheticConstructor {
|
|
No,
|
|
Yes,
|
|
};
|
|
|
|
SuperCall(SourceRange source_range, Vector<CallExpression::Argument> arguments)
|
|
: Expression(move(source_range))
|
|
, m_arguments(move(arguments))
|
|
, m_is_synthetic(IsPartOfSyntheticConstructor::No)
|
|
{
|
|
}
|
|
|
|
SuperCall(SourceRange source_range, IsPartOfSyntheticConstructor is_part_of_synthetic_constructor, CallExpression::Argument constructor_argument)
|
|
: Expression(move(source_range))
|
|
, m_arguments({ move(constructor_argument) })
|
|
, m_is_synthetic(IsPartOfSyntheticConstructor::Yes)
|
|
{
|
|
VERIFY(is_part_of_synthetic_constructor == IsPartOfSyntheticConstructor::Yes);
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
Vector<CallExpression::Argument> const m_arguments;
|
|
IsPartOfSyntheticConstructor const m_is_synthetic;
|
|
};
|
|
|
|
enum class AssignmentOp {
|
|
Assignment,
|
|
AdditionAssignment,
|
|
SubtractionAssignment,
|
|
MultiplicationAssignment,
|
|
DivisionAssignment,
|
|
ModuloAssignment,
|
|
ExponentiationAssignment,
|
|
BitwiseAndAssignment,
|
|
BitwiseOrAssignment,
|
|
BitwiseXorAssignment,
|
|
LeftShiftAssignment,
|
|
RightShiftAssignment,
|
|
UnsignedRightShiftAssignment,
|
|
AndAssignment,
|
|
OrAssignment,
|
|
NullishAssignment,
|
|
};
|
|
|
|
class AssignmentExpression final : public Expression {
|
|
public:
|
|
AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<Expression const> lhs, NonnullRefPtr<Expression const> rhs)
|
|
: Expression(move(source_range))
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<BindingPattern const> lhs, NonnullRefPtr<Expression const> rhs)
|
|
: Expression(move(source_range))
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
AssignmentOp m_op;
|
|
Variant<NonnullRefPtr<Expression const>, NonnullRefPtr<BindingPattern const>> m_lhs;
|
|
NonnullRefPtr<Expression const> m_rhs;
|
|
};
|
|
|
|
enum class UpdateOp {
|
|
Increment,
|
|
Decrement,
|
|
};
|
|
|
|
class UpdateExpression final : public Expression {
|
|
public:
|
|
UpdateExpression(SourceRange source_range, UpdateOp op, NonnullRefPtr<Expression const> argument, bool prefixed = false)
|
|
: Expression(move(source_range))
|
|
, m_op(op)
|
|
, m_argument(move(argument))
|
|
, m_prefixed(prefixed)
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
virtual bool is_update_expression() const override { return true; }
|
|
|
|
UpdateOp m_op;
|
|
NonnullRefPtr<Expression const> m_argument;
|
|
bool m_prefixed;
|
|
};
|
|
|
|
enum class DeclarationKind {
|
|
Var,
|
|
Let,
|
|
Const,
|
|
};
|
|
|
|
class VariableDeclarator final : public ASTNode {
|
|
public:
|
|
VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier const> id)
|
|
: ASTNode(move(source_range))
|
|
, m_target(move(id))
|
|
{
|
|
}
|
|
|
|
VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier const> target, RefPtr<Expression const> init)
|
|
: ASTNode(move(source_range))
|
|
, m_target(move(target))
|
|
, m_init(move(init))
|
|
{
|
|
}
|
|
|
|
VariableDeclarator(SourceRange source_range, Variant<NonnullRefPtr<Identifier const>, NonnullRefPtr<BindingPattern const>> target, RefPtr<Expression const> init)
|
|
: ASTNode(move(source_range))
|
|
, m_target(move(target))
|
|
, m_init(move(init))
|
|
{
|
|
}
|
|
|
|
auto& target() const { return m_target; }
|
|
Expression const* init() const { return m_init; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<Identifier const>, NonnullRefPtr<BindingPattern const>> m_target;
|
|
RefPtr<Expression const> m_init;
|
|
};
|
|
|
|
class VariableDeclaration final : public Declaration {
|
|
public:
|
|
VariableDeclaration(SourceRange source_range, DeclarationKind declaration_kind, Vector<NonnullRefPtr<VariableDeclarator const>> declarations)
|
|
: Declaration(move(source_range))
|
|
, m_declaration_kind(declaration_kind)
|
|
, m_declarations(move(declarations))
|
|
{
|
|
}
|
|
|
|
DeclarationKind declaration_kind() const { return m_declaration_kind; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
Vector<NonnullRefPtr<VariableDeclarator const>> const& declarations() const { return m_declarations; }
|
|
|
|
ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&&) const override;
|
|
|
|
virtual bool is_constant_declaration() const override { return m_declaration_kind == DeclarationKind::Const; }
|
|
|
|
virtual bool is_lexical_declaration() const override { return m_declaration_kind != DeclarationKind::Var; }
|
|
|
|
private:
|
|
virtual bool is_variable_declaration() const override { return true; }
|
|
|
|
DeclarationKind m_declaration_kind;
|
|
Vector<NonnullRefPtr<VariableDeclarator const>> m_declarations;
|
|
};
|
|
|
|
class UsingDeclaration final : public Declaration {
|
|
public:
|
|
UsingDeclaration(SourceRange source_range, Vector<NonnullRefPtr<VariableDeclarator const>> declarations)
|
|
: Declaration(move(source_range))
|
|
, m_declarations(move(declarations))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
ThrowCompletionOr<void> for_each_bound_identifier(ThrowCompletionOrVoidCallback<Identifier const&>&&) const override;
|
|
|
|
virtual bool is_constant_declaration() const override { return true; }
|
|
|
|
virtual bool is_lexical_declaration() const override { return true; }
|
|
|
|
Vector<NonnullRefPtr<VariableDeclarator const>> const& declarations() const { return m_declarations; }
|
|
|
|
private:
|
|
Vector<NonnullRefPtr<VariableDeclarator const>> m_declarations;
|
|
};
|
|
|
|
class ObjectProperty final : public ASTNode {
|
|
public:
|
|
enum class Type : u8 {
|
|
KeyValue,
|
|
Getter,
|
|
Setter,
|
|
Spread,
|
|
ProtoSetter,
|
|
};
|
|
|
|
ObjectProperty(SourceRange source_range, NonnullRefPtr<Expression const> key, RefPtr<Expression const> value, Type property_type, bool is_method)
|
|
: ASTNode(move(source_range))
|
|
, m_property_type(property_type)
|
|
, m_is_method(is_method)
|
|
, m_key(move(key))
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
Expression const& key() const { return m_key; }
|
|
Expression const& value() const
|
|
{
|
|
VERIFY(m_value);
|
|
return *m_value;
|
|
}
|
|
|
|
Type type() const { return m_property_type; }
|
|
bool is_method() const { return m_is_method; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Type m_property_type;
|
|
bool m_is_method { false };
|
|
NonnullRefPtr<Expression const> m_key;
|
|
RefPtr<Expression const> m_value;
|
|
};
|
|
|
|
class ObjectExpression final : public Expression {
|
|
public:
|
|
explicit ObjectExpression(SourceRange source_range, Vector<NonnullRefPtr<ObjectProperty>> properties = {})
|
|
: Expression(move(source_range))
|
|
, m_properties(move(properties))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
virtual bool is_object_expression() const override { return true; }
|
|
|
|
Vector<NonnullRefPtr<ObjectProperty>> m_properties;
|
|
};
|
|
|
|
class ArrayExpression final : public Expression {
|
|
public:
|
|
ArrayExpression(SourceRange source_range, Vector<RefPtr<Expression const>> elements)
|
|
: Expression(move(source_range))
|
|
, m_elements(move(elements))
|
|
{
|
|
}
|
|
|
|
Vector<RefPtr<Expression const>> const& elements() const { return m_elements; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
virtual bool is_array_expression() const override { return true; }
|
|
|
|
Vector<RefPtr<Expression const>> m_elements;
|
|
};
|
|
|
|
class TemplateLiteral final : public Expression {
|
|
public:
|
|
TemplateLiteral(SourceRange source_range, Vector<NonnullRefPtr<Expression const>> expressions)
|
|
: Expression(move(source_range))
|
|
, m_expressions(move(expressions))
|
|
{
|
|
}
|
|
|
|
TemplateLiteral(SourceRange source_range, Vector<NonnullRefPtr<Expression const>> expressions, Vector<NonnullRefPtr<Expression const>> raw_strings)
|
|
: Expression(move(source_range))
|
|
, m_expressions(move(expressions))
|
|
, m_raw_strings(move(raw_strings))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
Vector<NonnullRefPtr<Expression const>> const& expressions() const { return m_expressions; }
|
|
Vector<NonnullRefPtr<Expression const>> const& raw_strings() const { return m_raw_strings; }
|
|
|
|
private:
|
|
Vector<NonnullRefPtr<Expression const>> const m_expressions;
|
|
Vector<NonnullRefPtr<Expression const>> const m_raw_strings;
|
|
};
|
|
|
|
class TaggedTemplateLiteral final : public Expression {
|
|
public:
|
|
TaggedTemplateLiteral(SourceRange source_range, NonnullRefPtr<Expression const> tag, NonnullRefPtr<TemplateLiteral const> template_literal)
|
|
: Expression(move(source_range))
|
|
, m_tag(move(tag))
|
|
, m_template_literal(move(template_literal))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> const m_tag;
|
|
NonnullRefPtr<TemplateLiteral const> const m_template_literal;
|
|
};
|
|
|
|
class MemberExpression final : public Expression {
|
|
public:
|
|
MemberExpression(SourceRange source_range, NonnullRefPtr<Expression const> object, NonnullRefPtr<Expression const> property, bool computed = false)
|
|
: Expression(move(source_range))
|
|
, m_computed(computed)
|
|
, m_object(move(object))
|
|
, m_property(move(property))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
bool is_computed() const { return m_computed; }
|
|
Expression const& object() const { return *m_object; }
|
|
Expression const& property() const { return *m_property; }
|
|
|
|
ByteString to_string_approximation() const;
|
|
|
|
bool ends_in_private_name() const;
|
|
|
|
private:
|
|
virtual bool is_member_expression() const override { return true; }
|
|
|
|
bool m_computed { false };
|
|
NonnullRefPtr<Expression const> m_object;
|
|
NonnullRefPtr<Expression const> m_property;
|
|
};
|
|
|
|
class OptionalChain final : public Expression {
|
|
public:
|
|
enum class Mode {
|
|
Optional,
|
|
NotOptional,
|
|
};
|
|
|
|
struct Call {
|
|
Vector<CallExpression::Argument> arguments;
|
|
Mode mode;
|
|
};
|
|
struct ComputedReference {
|
|
NonnullRefPtr<Expression const> expression;
|
|
Mode mode;
|
|
};
|
|
struct MemberReference {
|
|
NonnullRefPtr<Identifier const> identifier;
|
|
Mode mode;
|
|
};
|
|
struct PrivateMemberReference {
|
|
NonnullRefPtr<PrivateIdentifier const> private_identifier;
|
|
Mode mode;
|
|
};
|
|
|
|
using Reference = Variant<Call, ComputedReference, MemberReference, PrivateMemberReference>;
|
|
|
|
OptionalChain(SourceRange source_range, NonnullRefPtr<Expression const> base, Vector<Reference> references)
|
|
: Expression(move(source_range))
|
|
, m_base(move(base))
|
|
, m_references(move(references))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
Expression const& base() const { return *m_base; }
|
|
Vector<Reference> const& references() const { return m_references; }
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_base;
|
|
Vector<Reference> m_references;
|
|
};
|
|
|
|
class MetaProperty final : public Expression {
|
|
public:
|
|
enum class Type {
|
|
NewTarget,
|
|
ImportMeta,
|
|
};
|
|
|
|
MetaProperty(SourceRange source_range, Type type)
|
|
: Expression(move(source_range))
|
|
, m_type(type)
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
Type m_type;
|
|
};
|
|
|
|
class ImportCall final : public Expression {
|
|
public:
|
|
ImportCall(SourceRange source_range, NonnullRefPtr<Expression const> specifier, RefPtr<Expression const> options)
|
|
: Expression(move(source_range))
|
|
, m_specifier(move(specifier))
|
|
, m_options(move(options))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
virtual bool is_import_call() const override { return true; }
|
|
|
|
NonnullRefPtr<Expression const> m_specifier;
|
|
RefPtr<Expression const> m_options;
|
|
};
|
|
|
|
class ConditionalExpression final : public Expression {
|
|
public:
|
|
ConditionalExpression(SourceRange source_range, NonnullRefPtr<Expression const> test, NonnullRefPtr<Expression const> consequent, NonnullRefPtr<Expression const> alternate)
|
|
: Expression(move(source_range))
|
|
, m_test(move(test))
|
|
, m_consequent(move(consequent))
|
|
, m_alternate(move(alternate))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_test;
|
|
NonnullRefPtr<Expression const> m_consequent;
|
|
NonnullRefPtr<Expression const> m_alternate;
|
|
};
|
|
|
|
class CatchClause final : public ASTNode {
|
|
public:
|
|
CatchClause(SourceRange source_range, DeprecatedFlyString parameter, NonnullRefPtr<BlockStatement const> body)
|
|
: ASTNode(move(source_range))
|
|
, m_parameter(move(parameter))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
CatchClause(SourceRange source_range, NonnullRefPtr<BindingPattern const> parameter, NonnullRefPtr<BlockStatement const> body)
|
|
: ASTNode(move(source_range))
|
|
, m_parameter(move(parameter))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
auto& parameter() const { return m_parameter; }
|
|
BlockStatement const& body() const { return m_body; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<DeprecatedFlyString, NonnullRefPtr<BindingPattern const>> m_parameter;
|
|
NonnullRefPtr<BlockStatement const> m_body;
|
|
};
|
|
|
|
class TryStatement final : public Statement {
|
|
public:
|
|
TryStatement(SourceRange source_range, NonnullRefPtr<BlockStatement const> block, RefPtr<CatchClause const> handler, RefPtr<BlockStatement const> finalizer)
|
|
: Statement(move(source_range))
|
|
, m_block(move(block))
|
|
, m_handler(move(handler))
|
|
, m_finalizer(move(finalizer))
|
|
{
|
|
}
|
|
|
|
BlockStatement const& block() const { return m_block; }
|
|
CatchClause const* handler() const { return m_handler; }
|
|
BlockStatement const* finalizer() const { return m_finalizer; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<BlockStatement const> m_block;
|
|
RefPtr<CatchClause const> m_handler;
|
|
RefPtr<BlockStatement const> m_finalizer;
|
|
};
|
|
|
|
class ThrowStatement final : public Statement {
|
|
public:
|
|
explicit ThrowStatement(SourceRange source_range, NonnullRefPtr<Expression const> argument)
|
|
: Statement(move(source_range))
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
Expression const& argument() const { return m_argument; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_argument;
|
|
};
|
|
|
|
class SwitchCase final : public ScopeNode {
|
|
public:
|
|
SwitchCase(SourceRange source_range, RefPtr<Expression const> test)
|
|
: ScopeNode(move(source_range))
|
|
, m_test(move(test))
|
|
{
|
|
}
|
|
|
|
Expression const* test() const { return m_test; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
RefPtr<Expression const> m_test;
|
|
};
|
|
|
|
class SwitchStatement final : public ScopeNode {
|
|
public:
|
|
SwitchStatement(SourceRange source_range, NonnullRefPtr<Expression const> discriminant)
|
|
: ScopeNode(move(source_range))
|
|
, m_discriminant(move(discriminant))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_labelled_evaluation(Bytecode::Generator&, Vector<DeprecatedFlyString> const&, Optional<Bytecode::Operand> preferred_dst = {}) const;
|
|
|
|
void add_case(NonnullRefPtr<SwitchCase const> switch_case) { m_cases.append(move(switch_case)); }
|
|
|
|
private:
|
|
NonnullRefPtr<Expression const> m_discriminant;
|
|
Vector<NonnullRefPtr<SwitchCase const>> m_cases;
|
|
};
|
|
|
|
class BreakStatement final : public Statement {
|
|
public:
|
|
BreakStatement(SourceRange source_range, Optional<DeprecatedFlyString> target_label)
|
|
: Statement(move(source_range))
|
|
, m_target_label(move(target_label))
|
|
{
|
|
}
|
|
|
|
Optional<DeprecatedFlyString> const& target_label() const { return m_target_label; }
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
private:
|
|
Optional<DeprecatedFlyString> m_target_label;
|
|
};
|
|
|
|
class ContinueStatement final : public Statement {
|
|
public:
|
|
ContinueStatement(SourceRange source_range, Optional<DeprecatedFlyString> target_label)
|
|
: Statement(move(source_range))
|
|
, m_target_label(move(target_label))
|
|
{
|
|
}
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
|
|
Optional<DeprecatedFlyString> const& target_label() const { return m_target_label; }
|
|
|
|
private:
|
|
Optional<DeprecatedFlyString> m_target_label;
|
|
};
|
|
|
|
class DebuggerStatement final : public Statement {
|
|
public:
|
|
explicit DebuggerStatement(SourceRange source_range)
|
|
: Statement(move(source_range))
|
|
{
|
|
}
|
|
|
|
virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::Operand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::Operand> preferred_dst = {}) const override;
|
|
};
|
|
|
|
class SyntheticReferenceExpression final : public Expression {
|
|
public:
|
|
explicit SyntheticReferenceExpression(SourceRange source_range, Reference reference, Value value)
|
|
: Expression(move(source_range))
|
|
, m_reference(move(reference))
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
private:
|
|
Reference m_reference;
|
|
Value m_value;
|
|
};
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<NewExpression>() const { return is_new_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<MemberExpression>() const { return is_member_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<SuperExpression>() const { return is_super_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<FunctionExpression>() const { return is_function_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ClassExpression>() const { return is_class_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<Identifier>() const { return is_identifier(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<PrivateIdentifier>() const { return is_private_identifier(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ExpressionStatement>() const { return is_expression_statement(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ScopeNode>() const { return is_scope_node(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<Program>() const { return is_program(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ClassDeclaration>() const { return is_class_declaration(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<FunctionDeclaration>() const { return is_function_declaration(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<VariableDeclaration>() const { return is_variable_declaration(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ArrayExpression>() const { return is_array_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ObjectExpression>() const { return is_object_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ImportCall>() const { return is_import_call(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<StringLiteral>() const { return is_string_literal(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<UpdateExpression>() const { return is_update_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<CallExpression>() const { return is_call_expression(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<LabelledStatement>() const { return is_labelled_statement(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<IterationStatement>() const { return is_iteration_statement(); }
|
|
|
|
template<>
|
|
inline bool ASTNode::fast_is<ClassMethod>() const { return is_class_method(); }
|
|
|
|
}
|