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class · Ruby 3.1

RubyVM::InstructionSequence

< Object 14 instance methods 10 class methods

The InstructionSequence class represents a compiled sequence of instructions for the Virtual Machine used in MRI. Not all implementations of Ruby may implement this class, and for the implementations that implement it, the methods defined and behavior of the methods can change in any version.

With it, you can get a handle to the instructions that make up a method or a proc, compile strings of Ruby code down to VM instructions, and disassemble instruction sequences to strings for easy inspection. It is mostly useful if you want to learn how YARV works, but it also lets you control various settings for the Ruby iseq compiler.

You can find the source for the VM instructions in insns.def in the Ruby source.

The instruction sequence results will almost certainly change as Ruby changes, so example output in this documentation may be different from what you see.

Of course, this class is MRI specific.

Class methods 10

.compile .compile_file .compile_option .compile_option= .disasm .disassemble .load_from_binary .load_from_binary_extra_data .new .of

Instance methods 14

#absolute_path #base_label #disasm #disassemble #each_child #eval #first_lineno #inspect #label #path #script_lines #to_a #to_binary #trace_points