This is a technique I first came across in the code for lcc, as described in David R. Hanson's book "A Retargetable C Compiler: Design and Implementation". htt

This is a technique I first came across in the code for lcc, as described in David R. Hanson's book "A Retargetable C Compiler: Design and Implementation". https://sites.google.com/site/lccretargetablecompiler/ https://sites.google.com/site/lccretargetablecompiler/ The code in that book feels pretty dated in a lot of places, but this was a neat trick. Every piece of information related to a token is defined in one place: https://github.com/drh/lcc/blob/master/src/token.h https://github.com/drh/lcc/blob/master/src/token.h Then here's how it's used: https://github.com/drh/lcc/blob/master/src/expr.c#L8 https://github.com/drh/lcc/blob/master/src/expr.c#L8 https://github.com/drh/lcc/blob/master/src/output.c#L107 https://github.com/drh/lcc/blob/master/src/output.c#L107