I want to dispute the 'modern' claim. I don't know my dates well enough. But is there anything in here that isn't at least 50 years old? The high-level is to

I want to dispute the 'modern' claim. I don't know my dates well enough. But is there anything in here that isn't at least 50 years old? The high-level is tokenize->parse->ast_transform->codegen. The low-level looks like `char = input[++current];`