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Add temporary local limit for Luau

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Rerumu 2023-06-23 15:49:32 -04:00
parent 4bcfbf5054
commit 170c5c3629
1 changed files with 16 additions and 0 deletions
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16
codegen/luau/src/backend/statement.rs
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@ -359,6 +359,15 @@ impl Driver for Statement {
} }
} }
fn has_sane_variables(ast: &FuncData) -> bool {
let local_count = ast.local_data().iter().map(|v| v.0).sum::<u32>();
let local_count = usize::try_from(local_count).unwrap();
let param_count = ast.num_param();
let temp_count = ast.num_stack();
temp_count + param_count + local_count < 170
}
fn write_parameter_list(ast: &FuncData, w: &mut dyn Write) -> Result<()> { fn write_parameter_list(ast: &FuncData, w: &mut dyn Write) -> Result<()> {
write!(w, "function(")?; write!(w, "function(")?;
write_ascending("loc", 0..ast.num_param(), w)?; write_ascending("loc", 0..ast.num_param(), w)?;
@ -396,6 +405,13 @@ fn write_variable_list(ast: &FuncData, mng: &mut Manager, w: &mut dyn Write) ->
impl Driver for FuncData { impl Driver for FuncData {
fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> { fn write(&self, mng: &mut Manager, w: &mut dyn Write) -> Result<()> {
if !has_sane_variables(self) {
return Err(std::io::Error::new(
std::io::ErrorKind::Other,
"too many variables in function",
));
}
let (table_map, has_branch) = br_target::visit(self); let (table_map, has_branch) = br_target::visit(self);
mng.indent(); mng.indent();