13 // output "s2:{s2:{s0 s0} x}";
14 // output "s2:{s0 x}";
24 output "1:{{a b} {c}}";
27 ids ::= id (" " ids &~ id ~[]*) => "1"
28 | id ( ids &~ id ~[]*) => "2"
36 output "2:{{a} 1:{{b} {c}}}";
37 output "1:{{a b} {c}}";
40 ids ::= id " " ids => "1"
73 output "ac:{{2 1 2 1}}";
74 //output "a:{{2 1 2 1}}";
75 //output "c:{{c:{1 1} c:{1 1}}}";
88 c ::= (x "2" x "1" => "c")*
94 output "bam:{a bam:{a bam:{a x:{x}}}}";
104 output "s2:{b0 a:{a:{epsilon}}}";
105 output "b:{a:{a:{epsilon}} epsilon}";
116 output "q:{a:{s1:{epsilon}}}";
120 x ::= () => "epsilon"
126 output "s1:{a2:{a2:{a0 b0} b0}}";
129 a ::= "a" a b => "a2"
137 output "s3:{s3:{epsilon a0 epsilon epsilon} epsilon epsilon epsilon}";
138 output "s3:{s3:{epsilon epsilon epsilon epsilon} a0 epsilon epsilon}";
139 output "s3:{s3:{epsilon epsilon a0 epsilon} epsilon epsilon epsilon}";
140 output "s3:{s3:{epsilon epsilon epsilon a0} epsilon epsilon epsilon}";
141 output "s3:{epsilon epsilon a0 a0}";
142 output "s3:{s3:{s3:{epsilon epsilon epsilon epsilon} epsilon epsilon epsilon} epsilon epsilon epsilon}";
143 output "s3:{s3:{epsilon epsilon epsilon epsilon} epsilon epsilon a0}";
144 output "s3:{s3:{epsilon epsilon epsilon epsilon} epsilon a0 epsilon}";
145 output "s3:{epsilon a0 epsilon a0}";
146 output "s3:{epsilon a0 a0 epsilon}";
148 s ::= "a" s a a a => "s3"
156 output "poo:{poo:{poox poox} poox}";
157 output "poo:{poox poo:{poox poox}}";
158 s ::= s s "a" => "poo"
164 output "s:{aa:{aa:{a b} b}}";
166 a ::= "a" a b => "aa"
173 output "sx:{b aa:{aa:{b b} b}}";
174 s ::= b d "a" "b" => "sx"
175 s ::= "a" d "a" d => "sy"
176 d ::= "a" a b => "aa"
177 a ::= "a" b b => "aa"
184 output "+:{{a} *:{{b} {c}}}";
196 output "plus:{stringify:{{a}} minus:{stringify:{{b}} times:{stringify:{{d}} stringify:{{c}}}}}";
197 output "times:{plus:{stringify:{{a}} minus:{stringify:{{b}} stringify:{{d}}}} stringify:{{c}}}";
198 output "plus:{stringify:{{a}} times:{minus:{stringify:{{b}} stringify:{{d}}} stringify:{{c}}}}";
199 output "times:{minus:{plus:{stringify:{{a}} stringify:{{b}}} stringify:{{d}}} stringify:{{c}}}";
200 output "minus:{plus:{stringify:{{a}} stringify:{{b}}} times:{stringify:{{d}} stringify:{{c}}}}";
203 s ::= l "=" q => "assign"
206 | l "=" q => "assign"
211 id ::= idl++ => "stringify"
217 output "times:{stringify:{{a}} times:{stringify:{{b}} stringify:{{c}}}}";
220 s ::= l "=" r => "assign"
223 | l "=" r => "assign"
225 | (r) "*" r => "times"
228 id ::= idl++ => "stringify"
234 output "plus:{stringify:{{a}} times:{stringify:{{b}} stringify:{{c}}}}";
237 s ::= l "=" r => "assign"
240 | l "=" r => "assign"
245 id ::= idl++ => "stringify"
251 output "{q:{{a a}} q:{{b b}}}";
275 // output "smt:{while:{>:{{x} {0}} while:{>:{{y} {0}} sbb:{{f o o} {b a r}}}}}";
276 // output "smt:{while:{>:{{x} {0}} sbb:{while:{>:{{y} {0}} {f o o}} {b a r}}}}";
279 //outdent !::= " " outdent " "
283 //s ::= any "\n\n" ww statement ww "\n\n" any => smt
288 //block ::= "\n" indent blockBody
289 // &~ "\n" outdent ~[\ ] ~[]*
291 //blockBody ::= statement
292 // > statement blockBody /ws => "sbb"
295 // | ^"while" expr block /ws
299 // | expr ^">" expr /ws
302 //call ::= expr "()" /ws
306 //ident ::= [a-z]++ &~ keyword
307 //keyword ::= "if" | "then" | "else" | "while"
309 //w ::= " " | "\n" | "\r"