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class method

RubyVM::InstructionSequence.of

of(p1)

static VALUE
iseqw_s_of(VALUE klass, VALUE body)
{
    const rb_iseq_t *iseq = NULL;

    if (rb_obj_is_proc(body)) {
        iseq = vm_proc_iseq(body);

        if (!rb_obj_is_iseq((VALUE)iseq)) {
            iseq = NULL;
        }
    }
    else if (rb_obj_is_method(body)) {
        iseq = rb_method_iseq(body);
    }
    else if (rb_typeddata_is_instance_of(body, &iseqw_data_type)) {
        return body;
    }

    return iseq ? iseqw_new(iseq) : Qnil;
}

Returns the instruction sequence containing the given proc or method.

For example, using irb:

# a proc
> p = proc { num = 1 + 2 }
> RubyVM::InstructionSequence.of(p)
> #=> <RubyVM::InstructionSequence:block in irb_binding@(irb)>

# for a method
> def foo(bar); puts bar; end
> RubyVM::InstructionSequence.of(method(:foo))
> #=> <RubyVM::InstructionSequence:foo@(irb)>

Using ::compile_file:

# /tmp/iseq_of.rb
def hello
  puts "hello, world"
end

$a_global_proc = proc { str = 'a' + 'b' }

# in irb
> require '/tmp/iseq_of.rb'

# first the method hello
> RubyVM::InstructionSequence.of(method(:hello))
> #=> #<RubyVM::InstructionSequence:0x007fb73d7cb1d0>

# then the global proc
> RubyVM::InstructionSequence.of($a_global_proc)
> #=> #<RubyVM::InstructionSequence:0x007fb73d7caf78>

See also .new #absolute_path .load_from_binary_extra_data #base_label also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

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