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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your // option. This file may not be copied, modified, or distributed // except according to those terms. use std::fmt; use address::Address; /// An assembly instruction, bytecode operation, VM operation, etc. /// /// This trait will be implemented for a variety of backends and /// provides the general means by which the rest of the code in this /// library can be re-used. pub trait Instruction: fmt::Debug { /// The address of this `Instruction`. fn address(&self) -> Address; /// Does this instruction terminate a `BasicBlock`? fn is_block_terminator(&self) -> bool { self.is_call() || self.is_local_jump() || self.is_return() } /// Does this instruction represent a call? fn is_call(&self) -> bool; /// Does this instruction represent a local jump? fn is_local_jump(&self) -> bool; /// Does this instruction represent a function return? fn is_return(&self) -> bool; }