+
+testcase {
+ input "abc ";
+ output "s:{a b c}";
+
+ s = s:: [a-z] [a-z] [a-z] " "*
+}
+
+testcase {
+
+ input "a+2";
+ output "Plus:{left:{Foo} right:{{2}}}";
+
+ s = Expr
+ Expr = [0-9]++
+ | Plus:: (left::Expra) "+" (right::Expr)
+ Expra = Foo:: ("a" | "b")
+
+}
+
+testcase {
+ input "aaaaa";
+ output "top:{a q:{{a a a}} a}";
+
+ s = top:: z (q::"a"*) z
+ z = a:: "a"
+}
+
+testcase {
+ input "if (x) if (y) z else q";
+ output "if:{ident:{{x}} else:{if:{ident:{{y}} then:{ident:{{z}}}} ident:{{q}}}}";
+
+ s = Expr
+ Expr = if:: "if" "(" Expr ")" IfBody /ws
+ | ident:: [a-z]++
+ IfBody = else:: Expr "else" Expr /ws
+ | then:: Expr &~ ((~[])* "else" !Expr /ws)
+ ws = [ ]**
+}
+
+
+testcase {
+ input "12111211";
+ output "ac:{{2 1 2 1}}";
+ //output "a:{{2 1 2 1}}";
+ //output "c:{{c:{1 1} c:{1 1}}}";
+
+ s = ab:: ab
+ | ac:: ac
+ | bc:: bc
+ //| a => "a"
+ //| b => "b"
+ //| c => "c"
+ ab = a & b
+ ac = a & c
+ bc = b & c
+ a = ("1" x)*
+ b = ("b":: x "2")*
+ c = ("c":: x "2" x "1")*
+ x = [123]
+}
+
+
+//testcase {
+// input "ab";
+//
+// s = a:"a" b:"b"
+//}
+