RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 13:48:12 +00:00
Code Issues Activity Actions

LibJS: Add JumpUndefined bytecode

Browse source
This commit is contained in:
Matthew Olsson 2021-06-13 12:24:40 -07:00 • committed by Andreas Kling
parent 3ee627909a
commit f39ab2e60a
4 changed files with 31 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

18
Userland/Libraries/LibJS/Bytecode/Op.cpp
View file

@ -195,6 +195,17 @@ void JumpNullish::execute_impl(Bytecode::Interpreter& interpreter) const
interpreter.jump(m_false_target.value());
}
void JumpUndefined::execute_impl(Bytecode::Interpreter& interpreter) const
{
VERIFY(m_true_target.has_value());
VERIFY(m_false_target.has_value());
auto result = interpreter.accumulator();
if (result.is_undefined())
interpreter.jump(m_true_target.value());
else
interpreter.jump(m_false_target.value());
}
void Call::execute_impl(Bytecode::Interpreter& interpreter) const
{
auto callee = interpreter.reg(m_callee);
@ -439,6 +450,13 @@ String JumpNullish::to_string_impl(Bytecode::Executable const&) const
return String::formatted("JumpNullish null:{} nonnull:{}", true_string, false_string);
}
String JumpUndefined::to_string_impl(Bytecode::Executable const&) const
{
auto true_string = m_true_target.has_value() ? String::formatted("{}", *m_true_target) : "<empty>";
auto false_string = m_false_target.has_value() ? String::formatted("{}", *m_false_target) : "<empty>";
return String::formatted("JumpUndefined undefined:{} not undefined:{}", true_string, false_string);
}
String Call::to_string_impl(Bytecode::Executable const&) const
{
StringBuilder builder;