token cr = /\n/;
token eq = /=/;
token space = /[ \t]+/;
token recipiename = /@[a-zA-Z0-9\.\-]+/;
token actionname = /(build|version|depends)/;
token actionvalue = /"[a-zA-Z0-9 \-_]+"/;

rule document = recipe cr document | recipe | cr;
rule recipe = recipiename cr myrules;
rule myrules = myrule cr myrules | cr;
rule myrule = actionname eq actionvalue;