use std::cell::RefCell;
use std::sync::Arc;

use crate::asm::parse::{ParserContext, ParserState};
use crate::module::CrsnExtension;
use crate::runtime::program::Program;

pub mod data;
pub mod error;
pub mod instr;
pub mod parse;
pub mod patches;

/// Parse a program from string and assemble a low level instruction sequence from it.
pub fn assemble(source: &str, parsers: Arc<Vec<Box<dyn CrsnExtension>>>) -> Result<Arc<Program>, error::CrsnError> {
    let pcx = ParserContext {
        parsers: &parsers,
        state: RefCell::new(ParserState {
            reg_aliases: Default::default(),
            reg_alias_stack: vec![],
            constants: Default::default(),
        }),
    };

    let ops = parse::parse(source, &pcx)?;

    Ok(Program::new(ops, parsers)?)
}