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LibJS: Track whether a program has a top level await statement

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davidot 2022-01-18 18:55:19 +01:00 • committed by Linus Groh
parent aca427fc8c
commit 99edf5b25a
2 changed files with 21 additions and 0 deletions
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17
Userland/Libraries/LibJS/Parser.cpp
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@ -237,6 +237,16 @@ public:
m_identifier_and_argument_index_associations.ensure(index).append(move(identifier));
}
void set_contains_await_expression()
{
m_contains_await_expression = true;
}
bool contains_await_expression() const
{
return m_contains_await_expression;
}
private:
void throw_identifier_declared(FlyString const& name, NonnullRefPtr<Declaration> const& declaration)
{
@ -263,6 +273,7 @@ private:
bool m_contains_access_to_arguments_object { false };
bool m_contains_direct_call_to_eval { false };
bool m_contains_await_expression { false };
};
class OperatorPrecedenceTable {
@ -525,6 +536,10 @@ void Parser::parse_module(Program& program)
}
}
VERIFY(m_state.current_scope_pusher);
if (m_state.current_scope_pusher->contains_await_expression())
program.set_has_top_level_await();
for (auto& export_statement : program.exports()) {
if (export_statement.has_statement())
continue;
@ -2342,6 +2357,8 @@ NonnullRefPtr<AwaitExpression> Parser::parse_await_expression()
auto associativity = operator_associativity(TokenType::Await);
auto argument = parse_expression(precedence, associativity);
m_state.current_scope_pusher->set_contains_await_expression();
return create_ast_node<AwaitExpression>({ m_state.current_token.filename(), rule_start.position(), position() }, move(argument));
}