Method pop_category1

src/lower2/stackmaps.rs:66–81

(
        &mut self,
        context: &str,
        instruction_index: usize,
    )

        Self {
            locals: Arc::new(locals),
            stack: Vec::new(),
        }
    }

    fn pop(&mut self, context: &str, instruction_index: usize) -> jvm::Result<FrameValue> {
        self.stack
            .pop()
            .ok_or_else(|| jvm::Error::VerificationError {
                context: context.to_string(),
                message: format!("Stack underflow at instruction {instruction_index}"),
            })
    }

    fn pop_category1(
        &mut self,
        context: &str,
        instruction_index: usize,
    ) -> jvm::Result<FrameValue> {
        let value = self.pop(context, instruction_index)?;