feat: Add opcode enumerating helpers using macros #346
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Previously, we have to manually maintain the opcodes so the list of opcode definitions is in sync with the array of
INSTRUCTION_OPCODE_NAMES
, which is a tedious step. In addition, it is also quite easier to forget one opcode or two in the implementations somewhere. This change leverages some purposely designed macros to grant us a way to enumerate all the macros, providing accessing code for each of them individually. This way we can define opcodes in one place and make sure every enumeration contains all the opcodes correctly.Note that using macros does have the drawbacks of making code less clearer to read. We are also providing a one-line command to generate the underlying Rust code. What's more one can also refer to Rust docs to see all the defined opcodes