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LibJS: Propagate "contains direct call to eval()" flag from parser

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We now propagate this flag to FunctionDeclaration, and then also into
ECMAScriptFunctionObject.

This will be used to disable optimizations that aren't safe in the
presence of direct eval().
This commit is contained in:
Andreas Kling 2021-10-08 12:43:38 +02:00
parent 12b283f32f
commit b2de563166
6 changed files with 37 additions and 22 deletions
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13
Userland/Libraries/LibJS/AST.h
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@ -441,11 +441,12 @@ public:
i32 function_length() const { return m_function_length; }
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(FlyString name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, FunctionKind kind, bool is_strict_mode, bool might_need_arguments_object, bool is_arrow_function)
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)
: m_name(move(name))
, m_body(move(body))
, m_parameters(move(parameters))
@ -453,6 +454,7 @@ protected:
, 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)
{
if (m_is_arrow_function)
@ -476,6 +478,7 @@ private:
FunctionKind m_kind;
bool m_is_strict_mode { false };
bool m_might_need_arguments_object { false };
bool m_contains_direct_call_to_eval { false };
bool m_is_arrow_function { false };
};
@ -485,9 +488,9 @@ class FunctionDeclaration final
public:
static bool must_have_name() { return true; }
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)
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)
: Declaration(source_range)
, FunctionNode(name, move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, false)
, FunctionNode(name, move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, false)
{
}
@ -511,9 +514,9 @@ class FunctionExpression final
public:
static bool must_have_name() { return false; }
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 is_arrow_function = false)
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)
: Expression(source_range)
, FunctionNode(name, move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, is_arrow_function)
, FunctionNode(name, move(body), move(parameters), function_length, kind, is_strict_mode, might_need_arguments_object, contains_direct_call_to_eval, is_arrow_function)
{
}