Example of creating macros for non-Lisp languages.

This is a nonsensical example, not meant for production, but meant for illustrating the technique.

The main grammar is only 5 lines long. The semantic code, which is used alongside the grammar is only 4 lines long.

Usage

make

Expected Output

make rm -rf hamburger hamburger.dSYM 0d/odin/das2json/das2json hamburger.drawio 0d/odin/das2json/das2json libsrc/transpile.drawio odin build . -debug -o:none ld: warning: ignoring duplicate libraries: '-lSystem' ./hamburger main hamburger.drawio libsrc/transpile.drawio

probe .main.? A◦4: ⌜a b c⎨ kitchen.order("hamburger"); ⎬d e f⌝ len=45

probe .main.? B◦3: ⌜a b c kitchen.order("hamburger"); d e f⌝ len=39

a b c kitchen.order("hamburger"); d e f

The actual output is the last 3 lines. The other stuff, prefixed by "probe" has been included to show the generated intermediate code. See the source code by opening hamburger.drawio (the source is written in a DPL - Diagrammatic Programming Language). Supporting code, written for this example in Odin, can be found in main.odin, 0d/* and libsrc/*. You don't need to understand 0d/* and librsrc/* unless you want to further dig into details (this would be like looking at the source code for a compiler).