Function create_default_constructor

src/lower2/jvm_gen.rs:70–107

Creates a default constructor ` ()V` that just calls `super()`.

(
    // pub(super) or pub(crate)
    cp: &mut InternedConstantPool,
    super_class_index: u16,
)

    max_locals: u16,
    code: Vec<Instruction>,
    descriptor: &str,
    is_static: bool,
    this_class_name: Option<&str>,
    method_name: &str,
) -> jvm::Result<Attribute> {
    let initial_locals = stackmaps::initial_locals_for_descriptor(
        descriptor,
        is_static,
        this_class_name,
        method_name == "<init>",
    )?;
    code_attribute_with_stack_maps(cp, max_stack, max_locals, code, initial_locals, method_name)
}

/// Creates a default constructor `<init>()V` that just calls `super()`.
pub(super) fn create_default_constructor(
    // pub(super) or pub(crate)
    cp: &mut InternedConstantPool,
    super_class_index: u16,
) -> jvm::Result<jvm::Method> {
    let init_name_index = cp.add_utf8("<init>")?;
    let init_desc_index = cp.add_utf8("()V")?;

    // Add reference to super.<init>()V
    let super_init_ref_index = cp.add_method_ref(super_class_index, "<init>", "()V")?;

    let instructions = vec![
        Instruction::Aload_0,
        Instruction::Invokespecial(super_init_ref_index),
        Instruction::Return,
    ];

    let max_stack = 1;
    let max_locals = 1;

    let code_attribute = code_attribute_for_descriptor(
        cp,
        max_stack,
        max_locals,
        instructions,
        "()V",