luaur-code-gen 0.1.3

use crate::records::assembly_builder_x_64::AssemblyBuilderX64;
use crate::records::label::Label;

impl AssemblyBuilderX64 {
    pub fn place_label(&mut self, label: &mut Label) {
        if label.location == !0u32 {
            if label.id == 0 {
                label.id = self.next_label;
                self.next_label = self.next_label.wrapping_add(1);
                // C++ `labelLocations.push_back(~0u)` — reserve this new label's
                // slot in `label_locations`. The original port wrongly pushed a
                // bogus Label into `pending_labels`, leaving `label_locations`
                // short (out-of-bounds in `set_label`) and corrupting fixups.
                self.label_locations.push(!0u32);
            }

            self.pending_labels.push(Label {
                id: label.id,
                location: self.get_code_size(),
            });
            self.place_imm_32(0);
        } else {
            self.place_imm_32((label.location.wrapping_sub(4 + self.get_code_size())) as i32);
        }
    }
}