Method enter_locals

crates/tinywasm/src/interpreter/stack/value_stack.rs:112–134

(&mut self, param_count: usize, local_count: usize)

    #[inline(always)]
    pub(crate) fn enter_locals(&mut self, param_count: usize, local_count: usize) -> Result<u32, Trap> {
        debug_assert!(param_count <= local_count);
        debug_assert!(param_count <= self.data.len());

        let len = self.data.len();
        let start = len - param_count;
        let end = start + local_count;

        if end > self.data.capacity() {
            cold_path();
            if end > self.max_size || !self.dynamic {
                return Err(Trap::ValueStackOverflow);
            }
            let cap = self.data.capacity();
            let target = end.max(cap.max(1).saturating_mul(2)).min(self.max_size);
            if self.data.try_reserve_exact(target - len).is_err() {
                return Err(Trap::ValueStackOverflow);
            }
        }

        self.data.resize(end, T::default());
        Ok(start as u32)
    }

    fn ensure_capacity_for(&mut self, required_len: usize) -> bool {
        let cap = self.data.capacity();