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LibJS: Implement generator functions (only in bytecode mode)

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Ali Mohammad Pur 2021-06-11 01:38:30 +04:30 • committed by Andreas Kling
parent c53a86a3fe
commit 3234697eca
21 changed files with 407 additions and 34 deletions
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31
Userland/Libraries/LibJS/AST.h
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@ -227,14 +227,16 @@ public:
const Vector<Parameter>& parameters() const { return m_parameters; };
i32 function_length() const { return m_function_length; }
bool is_strict_mode() const { return m_is_strict_mode; }
bool is_generator() const { return m_is_generator; }
protected:
FunctionNode(const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode)
FunctionNode(const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_generator, bool is_strict_mode)
: m_name(name)
, m_body(move(body))
, m_parameters(move(parameters))
, m_variables(move(variables))
, m_function_length(function_length)
, m_is_generator(is_generator)
, m_is_strict_mode(is_strict_mode)
{
}
@ -256,6 +258,7 @@ private:
const Vector<Parameter> m_parameters;
NonnullRefPtrVector<VariableDeclaration> m_variables;
const i32 m_function_length;
bool m_is_generator;
bool m_is_strict_mode;
};
@ -265,9 +268,9 @@ class FunctionDeclaration final
public:
static bool must_have_name() { return true; }
FunctionDeclaration(SourceRange source_range, const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode = false)
FunctionDeclaration(SourceRange source_range, const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_generator, bool is_strict_mode = false)
: Declaration(move(source_range))
, FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_strict_mode)
, FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_generator, is_strict_mode)
{
}
@ -282,9 +285,9 @@ class FunctionExpression final
public:
static bool must_have_name() { return false; }
FunctionExpression(SourceRange source_range, const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode, bool is_arrow_function = false)
FunctionExpression(SourceRange source_range, const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_generator, bool is_strict_mode, bool is_arrow_function = false)
: Expression(source_range)
, FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_strict_mode)
, FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_generator, is_strict_mode)
, m_is_arrow_function(is_arrow_function)
{
}
@ -318,6 +321,24 @@ public:
Value execute(Interpreter&, GlobalObject&) const override { return {}; }
};
class YieldExpression final : public Expression {
public:
explicit YieldExpression(SourceRange source_range, RefPtr<Expression> argument)
: Expression(move(source_range))
, m_argument(move(argument))
{
}
const Expression* 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 ReturnStatement final : public Statement {
public:
explicit ReturnStatement(SourceRange source_range, RefPtr<Expression> argument)