use crsn::asm::data::literal::Value;
use crsn::asm::error::CrsnError;
use crsn::asm::instr::op::OpKind;
use crsn::asm::parse::arg_parser::TokenParser;
use crsn::module::{CrsnExtension, ParseRes};
use crsn::runtime::fault::Fault;
use crsn::runtime::run_thread::{RunState, ThreadInfo};

mod defs;
mod parse;
mod exec;

#[derive(Debug, Clone)]
pub struct StackOps;

impl StackOps {
    pub fn new() -> Box<dyn CrsnExtension> {
        Box::new(Self)
    }
}

impl CrsnExtension for StackOps {
    fn name(&self) -> &'static str {
        "stacks"
    }

    fn parse_op<'a>(&self, keyword: &str, args: TokenParser<'a>) -> Result<ParseRes<'a, OpKind>, CrsnError> {
        parse::parse(keyword, args)
    }

    fn drop_obj(&self, _ti: &ThreadInfo, state: &mut RunState, handle: Value) -> Result<Option<()>, Fault> {
        exec::drop_obj(state, handle)
    }
}