Function oomir_to_jvm_bytecode

src/lower2.rs:35–263

Converts an OOMIR module into JVM class files Returns a HashMap where the key is the JVM class name (with '/') and the value is the bytecode

(
    module: &oomir::Module,
    _tcx: TyCtxt, // Keep tcx in signature if needed later, but unused now
)

};

mod constant_pool;
mod consts;
mod helpers;
mod jvm;
mod jvm_gen;
mod large_methods;
mod optimise2;
mod stackmaps;
mod translator;

pub const F128_CLASS: &str = "org/rustlang/runtime/F128";
pub const I128_CLASS: &str = "org/rustlang/runtime/I128";
pub const U128_CLASS: &str = "org/rustlang/runtime/U128";

static OUTPUT_DIRECTORY_COUNTER: AtomicUsize = AtomicUsize::new(0);

#[derive(Default)]
pub(crate) struct EmittedClassRegistry {
    variants: Mutex<HashMap<String, Vec<Arc<EmittedClassVariant>>>>,
}

struct EmittedClassVariant {
    hash: u64,
    len: usize,
    state: Mutex<EmittedClassState>,
    ready: Condvar,
}

enum EmittedClassState {
    Pending,
    Ready(Arc<[u8]>),
}

fn bytecode_hash(bytecode: &[u8]) -> u64 {
    bytecode.iter().fold(0xcbf29ce484222325u64, |hash, byte| {
        (hash ^ u64::from(*byte)).wrapping_mul(0x100000001b3)
    })
}

fn factory_return_instruction(ty: &oomir::Type) -> Instruction {
    match ty {
        oomir::Type::I8
        | oomir::Type::U8
        | oomir::Type::I16
        | oomir::Type::U16
        | oomir::Type::F16
        | oomir::Type::I32
        | oomir::Type::U32
        | oomir::Type::Boolean
        | oomir::Type::Char => Instruction::Ireturn,
        oomir::Type::I64 | oomir::Type::U64 => Instruction::Lreturn,
        oomir::Type::F32 => Instruction::Freturn,
        oomir::Type::F64 => Instruction::Dreturn,
        oomir::Type::Str
        | oomir::Type::Class(_)
        | oomir::Type::Array(_)
        | oomir::Type::Slice(_)
        | oomir::Type::Reference(_)