mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-11-04 07:10:57 +00:00
1878 lines
58 KiB
C++
1878 lines
58 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2020, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2021, 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/FlyString.h>
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#include <AK/HashMap.h>
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/EnvironmentCoordinate.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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enum class FunctionKind {
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Generator,
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Regular,
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};
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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(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() { }
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virtual Value execute(Interpreter&, GlobalObject&) const = 0;
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virtual void generate_bytecode(Bytecode::Generator&) const;
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virtual void dump(int indent) const;
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SourceRange const& source_range() const { return m_source_range; }
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SourceRange& source_range() { return m_source_range; }
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String 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_scope_node() const { return false; }
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virtual bool is_program() const { return false; }
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virtual bool is_function_declaration() const { return false; }
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protected:
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explicit ASTNode(SourceRange source_range)
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: m_source_range(source_range)
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{
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}
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private:
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SourceRange m_source_range;
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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(source_range)
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{
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}
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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<FlyString> const& labels() const { return m_labels; }
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virtual void add_label(FlyString string) { m_labels.append(move(string)); }
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protected:
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Vector<FlyString> m_labels;
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};
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class IterationStatement : public LabelableStatement {
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public:
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using LabelableStatement::LabelableStatement;
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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(source_range)
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{
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}
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Value execute(Interpreter&, GlobalObject&) const override { return {}; }
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virtual void generate_bytecode(Bytecode::Generator&) 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(source_range)
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{
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}
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Value execute(Interpreter&, GlobalObject&) const override { return {}; }
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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> expression)
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: Statement(source_range)
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, m_expression(move(expression))
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{
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}
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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virtual void dump(int indent) const override;
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virtual void generate_bytecode(Bytecode::Generator&) 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> m_expression;
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};
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template<typename... Args>
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class IteratorOrVoidFunction : public Function<IterationDecision(Args...)> {
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public:
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template<typename CallableType>
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IteratorOrVoidFunction(CallableType&& callable) requires(VoidFunction<CallableType, Args...>)
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: Function<IterationDecision(Args...)>([callable = forward<CallableType>(callable)](Args... args) {
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callable(args...);
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return IterationDecision::Continue;
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})
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{
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}
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template<typename CallableType>
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IteratorOrVoidFunction(CallableType&& callable) requires(IteratorFunction<CallableType, Args...>)
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: Function<IterationDecision(Args...)>(forward<CallableType>(callable))
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{
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}
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};
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class ScopeNode : public LabelableStatement {
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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> child)
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{
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m_children.append(move(child));
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}
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NonnullRefPtrVector<Statement> const& children() const { return m_children; }
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virtual void dump(int indent) const override;
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virtual void generate_bytecode(Bytecode::Generator&) const override;
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Value evaluate_statements(Interpreter& interpreter, GlobalObject& global_object) const;
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void add_var_scoped_declaration(NonnullRefPtr<Declaration> variables);
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void add_lexical_declaration(NonnullRefPtr<Declaration> variables);
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void add_hoisted_function(NonnullRefPtr<FunctionDeclaration> 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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void for_each_lexically_scoped_declaration(IteratorOrVoidFunction<Declaration const&>&& callback) const;
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void for_each_lexically_declared_name(IteratorOrVoidFunction<FlyString const&>&& callback) const;
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void for_each_var_declared_name(IteratorOrVoidFunction<FlyString const&>&& callback) const;
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void for_each_var_function_declaration_in_reverse_order(IteratorOrVoidFunction<FunctionDeclaration const&>&& callback) const;
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void for_each_var_scoped_variable_declaration(IteratorOrVoidFunction<VariableDeclaration const&>&& callback) const;
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void block_declaration_instantiation(GlobalObject& global_object, Environment* environment) const;
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void for_each_function_hoistable_with_annexB_extension(IteratorOrVoidFunction<FunctionDeclaration&>&& callback) const;
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protected:
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explicit ScopeNode(SourceRange source_range)
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: LabelableStatement(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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NonnullRefPtrVector<Statement> m_children;
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NonnullRefPtrVector<Declaration> m_lexical_declarations;
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NonnullRefPtrVector<Declaration> m_var_declarations;
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NonnullRefPtrVector<FunctionDeclaration> m_functions_hoistable_with_annexB_extension;
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};
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class ImportStatement final : public Statement {
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public:
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struct ImportEntry {
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String import_name;
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String local_name;
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};
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explicit ImportStatement(SourceRange source_range, StringView from_module, Vector<ImportEntry> entries = {})
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: Statement(source_range)
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, m_module_request(from_module)
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, m_entries(move(entries))
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{
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}
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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virtual void dump(int indent) const override;
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bool has_bound_name(StringView name) const;
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private:
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String m_module_request;
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Vector<ImportEntry> m_entries;
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};
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class ExportStatement final : public Statement {
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public:
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struct ExportEntry {
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enum Kind {
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ModuleRequest,
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LocalExport
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} kind;
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// Can always have
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String export_name;
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// Only if module request
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String module_request;
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// Has just one of ones below
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String local_or_import_name;
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ExportEntry(String export_name, String local_name)
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: kind(LocalExport)
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, export_name(export_name)
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, local_or_import_name(local_name)
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{
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}
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};
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explicit ExportStatement(SourceRange source_range, RefPtr<ASTNode> statement, Vector<ExportEntry> entries)
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: Statement(source_range)
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, m_statement(move(statement))
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, m_entries(move(entries))
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{
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}
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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virtual void dump(int indent) const override;
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bool has_export(StringView export_name) const;
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private:
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RefPtr<ASTNode> m_statement;
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Vector<ExportEntry> m_entries;
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};
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class Program final : public ScopeNode {
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public:
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enum class Type {
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Script,
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Module
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};
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explicit Program(SourceRange source_range, Type program_type)
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: ScopeNode(source_range)
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, m_type(program_type)
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{
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}
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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bool is_strict_mode() const { return m_is_strict_mode; }
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void set_strict_mode() { m_is_strict_mode = true; }
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Type type() const { return m_type; }
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void append_import(NonnullRefPtr<ImportStatement> import_statement)
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{
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m_imports.append(import_statement);
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append(import_statement);
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}
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void append_export(NonnullRefPtr<ExportStatement> export_statement)
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{
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m_exports.append(export_statement);
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append(export_statement);
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}
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NonnullRefPtrVector<ImportStatement> const& imports() const { return m_imports; }
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NonnullRefPtrVector<ExportStatement> const& exports() const { return m_exports; }
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ThrowCompletionOr<void> global_declaration_instantiation(Interpreter& interpreter, GlobalObject& global_object, GlobalEnvironment& global_environment) const;
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private:
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virtual bool is_program() const override { return true; }
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bool m_is_strict_mode { false };
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Type m_type { Type::Script };
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NonnullRefPtrVector<ImportStatement> m_imports;
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NonnullRefPtrVector<ExportStatement> m_exports;
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};
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class BlockStatement final : public ScopeNode {
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public:
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explicit BlockStatement(SourceRange source_range)
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: ScopeNode(source_range)
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{
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}
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Value execute(Interpreter& interpreter, GlobalObject& object) const override;
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};
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class FunctionBody final : public ScopeNode {
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public:
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explicit FunctionBody(SourceRange source_range)
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: ScopeNode(source_range)
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{
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}
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void set_strict_mode() { m_in_strict_mode = true; }
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bool in_strict_mode() const { return m_in_strict_mode; }
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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private:
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bool m_in_strict_mode { false };
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};
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class Expression : public ASTNode {
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public:
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explicit Expression(SourceRange source_range)
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: ASTNode(source_range)
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{
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}
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virtual Reference to_reference(Interpreter&, GlobalObject&) const;
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};
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class Declaration : public Statement {
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public:
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explicit Declaration(SourceRange source_range)
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: Statement(source_range)
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{
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}
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virtual void for_each_bound_name(IteratorOrVoidFunction<FlyString const&> callback) const = 0;
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// 8.1.3 Static Semantics: IsConstantDeclaration, https://tc39.es/ecma262/#sec-static-semantics-isconstantdeclaration
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virtual bool is_constant_declaration() const { return false; }
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virtual bool is_lexical_declaration() const { return false; }
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};
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class ErrorDeclaration final : public Declaration {
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public:
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explicit ErrorDeclaration(SourceRange source_range)
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: Declaration(source_range)
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{
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}
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Value execute(Interpreter&, GlobalObject&) const override { return {}; }
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void for_each_bound_name(IteratorOrVoidFunction<FlyString const&>) const override
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{
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VERIFY_NOT_REACHED();
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}
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};
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struct BindingPattern : RefCounted<BindingPattern> {
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// This covers both BindingProperty and BindingElement, hence the more generic name
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struct BindingEntry {
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// If this entry represents a BindingElement, then name will be Empty
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Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<Expression>, Empty> name {};
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Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>, NonnullRefPtr<MemberExpression>, Empty> alias {};
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RefPtr<Expression> initializer {};
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bool is_rest { false };
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bool is_elision() const { return name.has<Empty>() && alias.has<Empty>(); }
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};
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enum class Kind {
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Array,
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Object,
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};
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void dump(int indent) const;
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template<typename C>
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void for_each_bound_name(C&& callback) const;
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bool contains_expression() const;
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Vector<BindingEntry> entries;
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Kind kind { Kind::Object };
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};
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class FunctionNode {
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public:
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struct Parameter {
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Variant<FlyString, NonnullRefPtr<BindingPattern>> binding;
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RefPtr<Expression> default_value;
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bool is_rest { false };
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};
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FlyString const& name() const { return m_name; }
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Statement const& body() const { return *m_body; }
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Vector<Parameter> const& parameters() const { return m_parameters; };
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i32 function_length() const { return m_function_length; }
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bool is_strict_mode() const { return m_is_strict_mode; }
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bool might_need_arguments_object() const { return m_might_need_arguments_object; }
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bool contains_direct_call_to_eval() const { return m_contains_direct_call_to_eval; }
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bool is_arrow_function() const { return m_is_arrow_function; }
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FunctionKind kind() const { return m_kind; }
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protected:
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FunctionNode(FlyString name, NonnullRefPtr<Statement> body, Vector<Parameter> 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)
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: m_name(move(name))
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, m_body(move(body))
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, m_parameters(move(parameters))
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, m_function_length(function_length)
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, m_kind(kind)
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, m_is_strict_mode(is_strict_mode)
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, m_might_need_arguments_object(might_need_arguments_object)
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, m_contains_direct_call_to_eval(contains_direct_call_to_eval)
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, m_is_arrow_function(is_arrow_function)
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{
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if (m_is_arrow_function)
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VERIFY(!m_might_need_arguments_object);
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}
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void dump(int indent, String const& class_name) const;
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protected:
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void set_name(FlyString name)
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{
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VERIFY(m_name.is_empty());
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m_name = move(name);
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}
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private:
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FlyString m_name;
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NonnullRefPtr<Statement> m_body;
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Vector<Parameter> const m_parameters;
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const i32 m_function_length;
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FunctionKind m_kind;
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bool m_is_strict_mode { false };
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bool m_might_need_arguments_object { false };
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bool m_contains_direct_call_to_eval { false };
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bool m_is_arrow_function { false };
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};
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class FunctionDeclaration final
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: public Declaration
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, public FunctionNode {
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public:
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static bool must_have_name() { return true; }
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FunctionDeclaration(SourceRange source_range, FlyString const& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool contains_direct_call_to_eval)
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: Declaration(source_range)
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, FunctionNode(name, move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, false)
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{
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}
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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virtual void dump(int indent) const override;
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virtual void generate_bytecode(Bytecode::Generator&) const override;
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void for_each_bound_name(IteratorOrVoidFunction<FlyString const&> callback) const override;
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virtual bool is_function_declaration() const override { return true; }
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void set_should_do_additional_annexB_steps() { m_is_hoisted = true; }
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private:
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bool m_is_hoisted { false };
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};
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class FunctionExpression final
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: public Expression
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, public FunctionNode {
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public:
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static bool must_have_name() { return false; }
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FunctionExpression(SourceRange source_range, FlyString const& name, NonnullRefPtr<Statement> body, Vector<Parameter> 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 = false)
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: Expression(source_range)
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, FunctionNode(name, move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, is_arrow_function)
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{
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}
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virtual Value execute(Interpreter&, GlobalObject&) const override;
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virtual void dump(int indent) const override;
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|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
bool has_name() const { return !name().is_empty(); }
|
|
|
|
Value instantiate_ordinary_function_expression(Interpreter& interpreter, GlobalObject& global_object, FlyString 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(source_range)
|
|
{
|
|
}
|
|
|
|
Value execute(Interpreter&, GlobalObject&) const override { return {}; }
|
|
};
|
|
|
|
class YieldExpression final : public Expression {
|
|
public:
|
|
explicit YieldExpression(SourceRange source_range, RefPtr<Expression> argument, bool is_yield_from)
|
|
: Expression(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
RefPtr<Expression> m_argument;
|
|
bool m_is_yield_from { false };
|
|
};
|
|
|
|
class ReturnStatement final : public Statement {
|
|
public:
|
|
explicit ReturnStatement(SourceRange source_range, RefPtr<Expression> argument)
|
|
: Statement(source_range)
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
Expression const* argument() const { return m_argument; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
RefPtr<Expression> m_argument;
|
|
};
|
|
|
|
class IfStatement final : public Statement {
|
|
public:
|
|
IfStatement(SourceRange source_range, NonnullRefPtr<Expression> predicate, NonnullRefPtr<Statement> consequent, RefPtr<Statement> alternate)
|
|
: Statement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_predicate;
|
|
NonnullRefPtr<Statement> m_consequent;
|
|
RefPtr<Statement> m_alternate;
|
|
};
|
|
|
|
class WhileStatement final : public IterationStatement {
|
|
public:
|
|
WhileStatement(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_test;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class DoWhileStatement final : public IterationStatement {
|
|
public:
|
|
DoWhileStatement(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_test;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class WithStatement final : public Statement {
|
|
public:
|
|
WithStatement(SourceRange source_range, NonnullRefPtr<Expression> object, NonnullRefPtr<Statement> body)
|
|
: Statement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_object;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForStatement final : public IterationStatement {
|
|
public:
|
|
ForStatement(SourceRange source_range, RefPtr<ASTNode> init, RefPtr<Expression> test, RefPtr<Expression> update, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
RefPtr<ASTNode> m_init;
|
|
RefPtr<Expression> m_test;
|
|
RefPtr<Expression> m_update;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForInStatement final : public IterationStatement {
|
|
public:
|
|
ForInStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
NonnullRefPtr<Statement> m_body;
|
|
};
|
|
|
|
class ForOfStatement final : public IterationStatement {
|
|
public:
|
|
ForOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
|
|
: IterationStatement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<ASTNode>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
NonnullRefPtr<Statement> 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> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
BinaryOp m_op;
|
|
NonnullRefPtr<Expression> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
};
|
|
|
|
enum class LogicalOp {
|
|
And,
|
|
Or,
|
|
NullishCoalescing,
|
|
};
|
|
|
|
class LogicalExpression final : public Expression {
|
|
public:
|
|
LogicalExpression(SourceRange source_range, LogicalOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
LogicalOp m_op;
|
|
NonnullRefPtr<Expression> m_lhs;
|
|
NonnullRefPtr<Expression> 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> lhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
UnaryOp m_op;
|
|
NonnullRefPtr<Expression> m_lhs;
|
|
};
|
|
|
|
class SequenceExpression final : public Expression {
|
|
public:
|
|
SequenceExpression(SourceRange source_range, NonnullRefPtrVector<Expression> expressions)
|
|
: Expression(source_range)
|
|
, m_expressions(move(expressions))
|
|
{
|
|
VERIFY(m_expressions.size() >= 2);
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtrVector<Expression> m_expressions;
|
|
};
|
|
|
|
class Literal : public Expression {
|
|
protected:
|
|
explicit Literal(SourceRange source_range)
|
|
: Expression(source_range)
|
|
{
|
|
}
|
|
};
|
|
|
|
class BooleanLiteral final : public Literal {
|
|
public:
|
|
explicit BooleanLiteral(SourceRange source_range, bool value)
|
|
: Literal(source_range)
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
bool m_value { false };
|
|
};
|
|
|
|
class NumericLiteral final : public Literal {
|
|
public:
|
|
explicit NumericLiteral(SourceRange source_range, double value)
|
|
: Literal(source_range)
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
Value m_value;
|
|
};
|
|
|
|
class BigIntLiteral final : public Literal {
|
|
public:
|
|
explicit BigIntLiteral(SourceRange source_range, String value)
|
|
: Literal(source_range)
|
|
, m_value(move(value))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
String m_value;
|
|
};
|
|
|
|
class StringLiteral final : public Literal {
|
|
public:
|
|
explicit StringLiteral(SourceRange source_range, String value, bool is_use_strict_directive = false)
|
|
: Literal(source_range)
|
|
, m_value(move(value))
|
|
, m_is_use_strict_directive(is_use_strict_directive)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
StringView value() const { return m_value; }
|
|
bool is_use_strict_directive() const { return m_is_use_strict_directive; };
|
|
|
|
private:
|
|
String m_value;
|
|
bool m_is_use_strict_directive;
|
|
};
|
|
|
|
class NullLiteral final : public Literal {
|
|
public:
|
|
explicit NullLiteral(SourceRange source_range)
|
|
: Literal(source_range)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
};
|
|
|
|
class RegExpLiteral final : public Literal {
|
|
public:
|
|
RegExpLiteral(SourceRange source_range, regex::Parser::Result parsed_regex, String parsed_pattern, regex::RegexOptions<ECMAScriptFlags> parsed_flags, String pattern, String flags)
|
|
: Literal(source_range)
|
|
, m_parsed_regex(move(parsed_regex))
|
|
, m_parsed_pattern(move(parsed_pattern))
|
|
, m_parsed_flags(move(parsed_flags))
|
|
, m_pattern(move(pattern))
|
|
, m_flags(move(flags))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
regex::Parser::Result const& parsed_regex() const { return m_parsed_regex; }
|
|
String const& parsed_pattern() const { return m_parsed_pattern; }
|
|
regex::RegexOptions<ECMAScriptFlags> const& parsed_flags() const { return m_parsed_flags; }
|
|
String const& pattern() const { return m_pattern; }
|
|
String const& flags() const { return m_flags; }
|
|
|
|
private:
|
|
regex::Parser::Result m_parsed_regex;
|
|
String m_parsed_pattern;
|
|
regex::RegexOptions<ECMAScriptFlags> m_parsed_flags;
|
|
String m_pattern;
|
|
String m_flags;
|
|
};
|
|
|
|
class Identifier final : public Expression {
|
|
public:
|
|
explicit Identifier(SourceRange source_range, FlyString string)
|
|
: Expression(source_range)
|
|
, m_string(move(string))
|
|
{
|
|
}
|
|
|
|
FlyString const& string() const { return m_string; }
|
|
void set_lexically_bound_function_argument_index(size_t index) { m_lexically_bound_function_argument = index; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Reference to_reference(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
virtual bool is_identifier() const override { return true; }
|
|
|
|
FlyString m_string;
|
|
Optional<size_t> m_lexically_bound_function_argument;
|
|
mutable Optional<EnvironmentCoordinate> m_cached_environment_coordinate;
|
|
};
|
|
|
|
class PrivateIdentifier final : public Expression {
|
|
public:
|
|
explicit PrivateIdentifier(SourceRange source_range, FlyString string)
|
|
: Expression(source_range)
|
|
, m_string(move(string))
|
|
{
|
|
}
|
|
|
|
FlyString const& string() const { return m_string; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
FlyString m_string;
|
|
};
|
|
|
|
class ClassElement : public ASTNode {
|
|
public:
|
|
ClassElement(SourceRange source_range, bool is_static)
|
|
: ASTNode(source_range)
|
|
, m_is_static(is_static)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
|
|
enum class ElementKind {
|
|
Method,
|
|
Field,
|
|
StaticInitializer,
|
|
};
|
|
|
|
virtual ElementKind class_element_kind() const = 0;
|
|
bool is_static() const { return m_is_static; }
|
|
|
|
using ClassElementName = Variant<PropertyKey, PrivateName>;
|
|
|
|
struct ClassFieldDefinition {
|
|
ClassElementName name;
|
|
ECMAScriptFunctionObject* initializer { nullptr };
|
|
};
|
|
|
|
// We use the Completion also as a ClassStaticBlockDefinition Record.
|
|
using ClassValue = Variant<ClassFieldDefinition, Completion, PrivateElement>;
|
|
virtual ThrowCompletionOr<ClassValue> class_element_evaluation(Interpreter&, GlobalObject&, Object& home_object) const = 0;
|
|
|
|
virtual Optional<FlyString> 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> key, NonnullRefPtr<FunctionExpression> function, Kind kind, bool is_static)
|
|
: ClassElement(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(Interpreter&, GlobalObject&, Object& home_object) const override;
|
|
virtual Optional<FlyString> private_bound_identifier() const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_key;
|
|
NonnullRefPtr<FunctionExpression> m_function;
|
|
Kind m_kind;
|
|
};
|
|
|
|
class ClassField final : public ClassElement {
|
|
public:
|
|
ClassField(SourceRange source_range, NonnullRefPtr<Expression> key, RefPtr<Expression> init, bool contains_direct_call_to_eval, bool is_static)
|
|
: ClassElement(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& initializer() const { return m_initializer; }
|
|
RefPtr<Expression>& 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(Interpreter& interpreter, GlobalObject& object, Object& home_object) const override;
|
|
virtual Optional<FlyString> private_bound_identifier() const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_key;
|
|
RefPtr<Expression> 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(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(Interpreter&, GlobalObject&, 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(source_range)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
virtual bool is_super_expression() const override { return true; }
|
|
};
|
|
|
|
class ClassExpression final : public Expression {
|
|
public:
|
|
ClassExpression(SourceRange source_range, String name, RefPtr<FunctionExpression> constructor, RefPtr<Expression> super_class, NonnullRefPtrVector<ClassElement> elements)
|
|
: Expression(source_range)
|
|
, m_name(move(name))
|
|
, m_constructor(move(constructor))
|
|
, m_super_class(move(super_class))
|
|
, m_elements(move(elements))
|
|
{
|
|
}
|
|
|
|
StringView name() const { return m_name; }
|
|
RefPtr<FunctionExpression> constructor() const { return m_constructor; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
bool has_name() const { return !m_name.is_empty(); }
|
|
|
|
ThrowCompletionOr<Value> class_definition_evaluation(Interpreter& interpreter, GlobalObject& global_object, FlyString const& binding_name = {}, FlyString const& class_name = {}) const;
|
|
|
|
private:
|
|
virtual bool is_class_expression() const override { return true; }
|
|
|
|
String m_name;
|
|
RefPtr<FunctionExpression> m_constructor;
|
|
RefPtr<Expression> m_super_class;
|
|
NonnullRefPtrVector<ClassElement> m_elements;
|
|
};
|
|
|
|
class ClassDeclaration final : public Declaration {
|
|
public:
|
|
ClassDeclaration(SourceRange source_range, NonnullRefPtr<ClassExpression> class_expression)
|
|
: Declaration(source_range)
|
|
, m_class_expression(move(class_expression))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
void for_each_bound_name(IteratorOrVoidFunction<FlyString const&> callback) const override;
|
|
|
|
virtual bool is_lexical_declaration() const override { return true; }
|
|
|
|
private:
|
|
NonnullRefPtr<ClassExpression> m_class_expression;
|
|
};
|
|
|
|
class SpreadExpression final : public Expression {
|
|
public:
|
|
explicit SpreadExpression(SourceRange source_range, NonnullRefPtr<Expression> target)
|
|
: Expression(source_range)
|
|
, m_target(move(target))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_target;
|
|
};
|
|
|
|
class ThisExpression final : public Expression {
|
|
public:
|
|
explicit ThisExpression(SourceRange source_range)
|
|
: Expression(source_range)
|
|
{
|
|
}
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
};
|
|
|
|
class CallExpression : public Expression {
|
|
public:
|
|
struct Argument {
|
|
NonnullRefPtr<Expression> value;
|
|
bool is_spread;
|
|
};
|
|
|
|
CallExpression(SourceRange source_range, NonnullRefPtr<Expression> callee, Vector<Argument> arguments = {})
|
|
: Expression(source_range)
|
|
, m_callee(move(callee))
|
|
, m_arguments(move(arguments))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
Expression const& callee() const { return m_callee; }
|
|
|
|
protected:
|
|
void throw_type_error_for_callee(Interpreter&, GlobalObject&, Value callee_value, StringView call_type) const;
|
|
|
|
NonnullRefPtr<Expression> m_callee;
|
|
Vector<Argument> const m_arguments;
|
|
|
|
private:
|
|
struct ThisAndCallee {
|
|
Value this_value;
|
|
Value callee;
|
|
};
|
|
|
|
ThisAndCallee compute_this_and_callee(Interpreter&, GlobalObject&, Reference const&) const;
|
|
};
|
|
|
|
class NewExpression final : public CallExpression {
|
|
public:
|
|
NewExpression(SourceRange source_range, NonnullRefPtr<Expression> callee, Vector<Argument> arguments = {})
|
|
: CallExpression(source_range, move(callee), move(arguments))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
|
|
virtual bool is_new_expression() const override { return true; }
|
|
};
|
|
|
|
class SuperCall final : public Expression {
|
|
public:
|
|
SuperCall(SourceRange source_range, Vector<CallExpression::Argument> arguments)
|
|
: Expression(source_range)
|
|
, m_arguments(move(arguments))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Vector<CallExpression::Argument> const m_arguments;
|
|
};
|
|
|
|
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> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<BindingPattern> lhs, NonnullRefPtr<Expression> rhs)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_lhs(move(lhs))
|
|
, m_rhs(move(rhs))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
AssignmentOp m_op;
|
|
Variant<NonnullRefPtr<Expression>, NonnullRefPtr<BindingPattern>> m_lhs;
|
|
NonnullRefPtr<Expression> m_rhs;
|
|
};
|
|
|
|
enum class UpdateOp {
|
|
Increment,
|
|
Decrement,
|
|
};
|
|
|
|
class UpdateExpression final : public Expression {
|
|
public:
|
|
UpdateExpression(SourceRange source_range, UpdateOp op, NonnullRefPtr<Expression> argument, bool prefixed = false)
|
|
: Expression(source_range)
|
|
, m_op(op)
|
|
, m_argument(move(argument))
|
|
, m_prefixed(prefixed)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
UpdateOp m_op;
|
|
NonnullRefPtr<Expression> m_argument;
|
|
bool m_prefixed;
|
|
};
|
|
|
|
enum class DeclarationKind {
|
|
Var,
|
|
Let,
|
|
Const,
|
|
};
|
|
|
|
class VariableDeclarator final : public ASTNode {
|
|
public:
|
|
VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier> id)
|
|
: ASTNode(source_range)
|
|
, m_target(move(id))
|
|
{
|
|
}
|
|
|
|
VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier> target, RefPtr<Expression> init)
|
|
: ASTNode(source_range)
|
|
, m_target(move(target))
|
|
, m_init(move(init))
|
|
{
|
|
}
|
|
|
|
VariableDeclarator(SourceRange source_range, Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>> target, RefPtr<Expression> init)
|
|
: ASTNode(source_range)
|
|
, m_target(move(target))
|
|
, m_init(move(init))
|
|
{
|
|
}
|
|
|
|
auto& target() const { return m_target; }
|
|
Expression const* init() const { return m_init; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>> m_target;
|
|
RefPtr<Expression> m_init;
|
|
};
|
|
|
|
class VariableDeclaration final : public Declaration {
|
|
public:
|
|
VariableDeclaration(SourceRange source_range, DeclarationKind declaration_kind, NonnullRefPtrVector<VariableDeclarator> declarations)
|
|
: Declaration(source_range)
|
|
, m_declaration_kind(declaration_kind)
|
|
, m_declarations(move(declarations))
|
|
{
|
|
}
|
|
|
|
DeclarationKind declaration_kind() const { return m_declaration_kind; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
NonnullRefPtrVector<VariableDeclarator> const& declarations() const { return m_declarations; }
|
|
|
|
virtual void for_each_bound_name(IteratorOrVoidFunction<FlyString const&> callback) 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:
|
|
DeclarationKind m_declaration_kind;
|
|
NonnullRefPtrVector<VariableDeclarator> m_declarations;
|
|
};
|
|
|
|
class ObjectProperty final : public ASTNode {
|
|
public:
|
|
enum class Type {
|
|
KeyValue,
|
|
Getter,
|
|
Setter,
|
|
Spread,
|
|
};
|
|
|
|
ObjectProperty(SourceRange source_range, NonnullRefPtr<Expression> key, RefPtr<Expression> value, Type property_type, bool is_method)
|
|
: ASTNode(source_range)
|
|
, m_key(move(key))
|
|
, m_value(move(value))
|
|
, m_property_type(property_type)
|
|
, m_is_method(is_method)
|
|
{
|
|
}
|
|
|
|
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;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_key;
|
|
RefPtr<Expression> m_value;
|
|
Type m_property_type;
|
|
bool m_is_method { false };
|
|
};
|
|
|
|
class ObjectExpression final : public Expression {
|
|
public:
|
|
explicit ObjectExpression(SourceRange source_range, NonnullRefPtrVector<ObjectProperty> properties = {}, Optional<SourceRange> first_invalid_property_range = {})
|
|
: Expression(source_range)
|
|
, m_properties(move(properties))
|
|
, m_first_invalid_property_range(move(first_invalid_property_range))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
Optional<SourceRange> const& invalid_property_range() const { return m_first_invalid_property_range; }
|
|
|
|
private:
|
|
NonnullRefPtrVector<ObjectProperty> m_properties;
|
|
Optional<SourceRange> m_first_invalid_property_range;
|
|
};
|
|
|
|
class ArrayExpression final : public Expression {
|
|
public:
|
|
ArrayExpression(SourceRange source_range, Vector<RefPtr<Expression>> elements)
|
|
: Expression(source_range)
|
|
, m_elements(move(elements))
|
|
{
|
|
}
|
|
|
|
Vector<RefPtr<Expression>> const& elements() const { return m_elements; }
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
Vector<RefPtr<Expression>> m_elements;
|
|
};
|
|
|
|
class TemplateLiteral final : public Expression {
|
|
public:
|
|
TemplateLiteral(SourceRange source_range, NonnullRefPtrVector<Expression> expressions)
|
|
: Expression(source_range)
|
|
, m_expressions(move(expressions))
|
|
{
|
|
}
|
|
|
|
TemplateLiteral(SourceRange source_range, NonnullRefPtrVector<Expression> expressions, NonnullRefPtrVector<Expression> raw_strings)
|
|
: Expression(source_range)
|
|
, m_expressions(move(expressions))
|
|
, m_raw_strings(move(raw_strings))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
NonnullRefPtrVector<Expression> const& expressions() const { return m_expressions; }
|
|
NonnullRefPtrVector<Expression> const& raw_strings() const { return m_raw_strings; }
|
|
|
|
private:
|
|
NonnullRefPtrVector<Expression> const m_expressions;
|
|
NonnullRefPtrVector<Expression> const m_raw_strings;
|
|
};
|
|
|
|
class TaggedTemplateLiteral final : public Expression {
|
|
public:
|
|
TaggedTemplateLiteral(SourceRange source_range, NonnullRefPtr<Expression> tag, NonnullRefPtr<TemplateLiteral> template_literal)
|
|
: Expression(source_range)
|
|
, m_tag(move(tag))
|
|
, m_template_literal(move(template_literal))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> const m_tag;
|
|
NonnullRefPtr<TemplateLiteral> const m_template_literal;
|
|
};
|
|
|
|
class MemberExpression final : public Expression {
|
|
public:
|
|
MemberExpression(SourceRange source_range, NonnullRefPtr<Expression> object, NonnullRefPtr<Expression> property, bool computed = false)
|
|
: Expression(source_range)
|
|
, m_object(move(object))
|
|
, m_property(move(property))
|
|
, m_computed(computed)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
virtual Reference to_reference(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
bool is_computed() const { return m_computed; }
|
|
Expression const& object() const { return *m_object; }
|
|
Expression const& property() const { return *m_property; }
|
|
|
|
PropertyKey computed_property_name(Interpreter&, GlobalObject&) const;
|
|
|
|
String to_string_approximation() const;
|
|
|
|
bool ends_in_private_name() const;
|
|
|
|
private:
|
|
virtual bool is_member_expression() const override { return true; }
|
|
|
|
NonnullRefPtr<Expression> m_object;
|
|
NonnullRefPtr<Expression> m_property;
|
|
bool m_computed { false };
|
|
};
|
|
|
|
class OptionalChain final : public Expression {
|
|
public:
|
|
enum class Mode {
|
|
Optional,
|
|
NotOptional,
|
|
};
|
|
|
|
struct Call {
|
|
Vector<CallExpression::Argument> arguments;
|
|
Mode mode;
|
|
};
|
|
struct ComputedReference {
|
|
NonnullRefPtr<Expression> expression;
|
|
Mode mode;
|
|
};
|
|
struct MemberReference {
|
|
NonnullRefPtr<Identifier> identifier;
|
|
Mode mode;
|
|
};
|
|
struct PrivateMemberReference {
|
|
NonnullRefPtr<PrivateIdentifier> private_identifier;
|
|
Mode mode;
|
|
};
|
|
|
|
using Reference = Variant<Call, ComputedReference, MemberReference, PrivateMemberReference>;
|
|
|
|
OptionalChain(SourceRange source_range, NonnullRefPtr<Expression> base, Vector<Reference> references)
|
|
: Expression(source_range)
|
|
, m_base(move(base))
|
|
, m_references(move(references))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter& interpreter, GlobalObject& global_object) const override;
|
|
virtual JS::Reference to_reference(Interpreter& interpreter, GlobalObject& global_object) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
struct ReferenceAndValue {
|
|
JS::Reference reference;
|
|
Value value;
|
|
};
|
|
Optional<ReferenceAndValue> to_reference_and_value(Interpreter&, GlobalObject&) const;
|
|
|
|
NonnullRefPtr<Expression> m_base;
|
|
Vector<Reference> m_references;
|
|
};
|
|
|
|
class MetaProperty final : public Expression {
|
|
public:
|
|
enum class Type {
|
|
NewTarget,
|
|
ImportMeta,
|
|
};
|
|
|
|
MetaProperty(SourceRange source_range, Type type)
|
|
: Expression(source_range)
|
|
, m_type(type)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void dump(int indent) const override;
|
|
|
|
private:
|
|
Type m_type;
|
|
};
|
|
|
|
class ConditionalExpression final : public Expression {
|
|
public:
|
|
ConditionalExpression(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Expression> consequent, NonnullRefPtr<Expression> alternate)
|
|
: Expression(source_range)
|
|
, m_test(move(test))
|
|
, m_consequent(move(consequent))
|
|
, m_alternate(move(alternate))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_test;
|
|
NonnullRefPtr<Expression> m_consequent;
|
|
NonnullRefPtr<Expression> m_alternate;
|
|
};
|
|
|
|
class CatchClause final : public ASTNode {
|
|
public:
|
|
CatchClause(SourceRange source_range, FlyString parameter, NonnullRefPtr<BlockStatement> body)
|
|
: ASTNode(source_range)
|
|
, m_parameter(move(parameter))
|
|
, m_body(move(body))
|
|
{
|
|
}
|
|
|
|
CatchClause(SourceRange source_range, NonnullRefPtr<BindingPattern> parameter, NonnullRefPtr<BlockStatement> body)
|
|
: ASTNode(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;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
|
|
private:
|
|
Variant<FlyString, NonnullRefPtr<BindingPattern>> m_parameter;
|
|
NonnullRefPtr<BlockStatement> m_body;
|
|
};
|
|
|
|
class TryStatement final : public LabelableStatement {
|
|
public:
|
|
TryStatement(SourceRange source_range, NonnullRefPtr<BlockStatement> block, RefPtr<CatchClause> handler, RefPtr<BlockStatement> finalizer)
|
|
: LabelableStatement(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 Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
void add_label(FlyString string) override;
|
|
|
|
private:
|
|
NonnullRefPtr<BlockStatement> m_block;
|
|
RefPtr<CatchClause> m_handler;
|
|
RefPtr<BlockStatement> m_finalizer;
|
|
};
|
|
|
|
class ThrowStatement final : public Statement {
|
|
public:
|
|
explicit ThrowStatement(SourceRange source_range, NonnullRefPtr<Expression> argument)
|
|
: Statement(source_range)
|
|
, m_argument(move(argument))
|
|
{
|
|
}
|
|
|
|
Expression const& argument() const { return m_argument; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_argument;
|
|
};
|
|
|
|
class SwitchCase final : public ScopeNode {
|
|
public:
|
|
SwitchCase(SourceRange source_range, RefPtr<Expression> test)
|
|
: ScopeNode(source_range)
|
|
, m_test(move(test))
|
|
{
|
|
}
|
|
|
|
Expression const* test() const { return m_test; }
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
|
|
private:
|
|
RefPtr<Expression> m_test;
|
|
};
|
|
|
|
class SwitchStatement final : public ScopeNode {
|
|
public:
|
|
SwitchStatement(SourceRange source_range, NonnullRefPtr<Expression> discriminant)
|
|
: ScopeNode(source_range)
|
|
, m_discriminant(move(discriminant))
|
|
{
|
|
}
|
|
|
|
virtual void dump(int indent) const override;
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
void add_case(NonnullRefPtr<SwitchCase> switch_case) { m_cases.append(move(switch_case)); }
|
|
|
|
private:
|
|
NonnullRefPtr<Expression> m_discriminant;
|
|
NonnullRefPtrVector<SwitchCase> m_cases;
|
|
};
|
|
|
|
class BreakStatement final : public Statement {
|
|
public:
|
|
BreakStatement(SourceRange source_range, FlyString target_label)
|
|
: Statement(source_range)
|
|
, m_target_label(move(target_label))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
|
|
FlyString const& target_label() const { return m_target_label; }
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
private:
|
|
FlyString m_target_label;
|
|
};
|
|
|
|
class ContinueStatement final : public Statement {
|
|
public:
|
|
ContinueStatement(SourceRange source_range, FlyString target_label)
|
|
: Statement(source_range)
|
|
, m_target_label(move(target_label))
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
|
|
FlyString const& target_label() const { return m_target_label; }
|
|
|
|
private:
|
|
FlyString m_target_label;
|
|
};
|
|
|
|
class DebuggerStatement final : public Statement {
|
|
public:
|
|
explicit DebuggerStatement(SourceRange source_range)
|
|
: Statement(source_range)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override;
|
|
virtual void generate_bytecode(Bytecode::Generator&) const override;
|
|
};
|
|
|
|
class SyntheticReferenceExpression final : public Expression {
|
|
public:
|
|
explicit SyntheticReferenceExpression(SourceRange source_range, Reference reference, Value value)
|
|
: Expression(source_range)
|
|
, m_reference(move(reference))
|
|
, m_value(value)
|
|
{
|
|
}
|
|
|
|
virtual Value execute(Interpreter&, GlobalObject&) const override { return m_value; }
|
|
virtual Reference to_reference(Interpreter&, GlobalObject&) const override { return m_reference; }
|
|
|
|
private:
|
|
Reference m_reference;
|
|
Value m_value;
|
|
};
|
|
|
|
template<typename C>
|
|
void BindingPattern::for_each_bound_name(C&& callback) const
|
|
{
|
|
for (auto& entry : entries) {
|
|
auto& alias = entry.alias;
|
|
if (alias.has<NonnullRefPtr<Identifier>>()) {
|
|
callback(alias.get<NonnullRefPtr<Identifier>>()->string());
|
|
} else if (alias.has<NonnullRefPtr<BindingPattern>>()) {
|
|
alias.get<NonnullRefPtr<BindingPattern>>()->for_each_bound_name(forward<C>(callback));
|
|
} else {
|
|
auto& name = entry.name;
|
|
if (name.has<NonnullRefPtr<Identifier>>())
|
|
callback(name.get<NonnullRefPtr<Identifier>>()->string());
|
|
}
|
|
}
|
|
}
|
|
|
|
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<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<FunctionDeclaration>() const { return is_function_declaration(); }
|
|
|
|
}
|