#!/opt/ulm/ballinrobe/bin/astl-ulmasm-free
sub descend(nestlevel, node) {
var result = "";
if (isoperator(node)) {
result = " " x nestlevel & "{ name: \"" & operator(node) & "\"";
if (len(node) > 0) {
result = result & ",\n" & " " x nestlevel & " children: [";
foreach operand in (node) {
result = result & "\n" & descend(nestlevel + 3, operand) & ",";
}
result = result & "\n" & " " x nestlevel & " ]\n";
}
result = result & " " x nestlevel & "}";
// result = result & " @" & location(node);
} else {
var val = tokenliteral(node);
var res;
if (res = val =~ m{"(.*)"}) {
val = "\\\"" & res[0] & "\\\"";
}
result = " " x nestlevel & "{ name: \"" & val & "\" }";
}
return result;
}
sub usage {
var msg = "Usage: " & cmdname & " infile ";
println(stderr, msg);
exit(1);
}
sub main(argv) {
var unit = root;
// process command line
var units = [];
while (len(argv) > 0) {
var input_file = pop(argv);
// parse input file
var input = open(input_file);
if (!input) {
println(stderr, input_file, ": cannot open for reading"); exit(1);
}
var res = parse(input);
if (type(res) == "string") {
println(stderr, res); exit(1);
}
push(units, res);
}
if (len(units) == 1) {
root = units[0];
} else {
root = join(units);
}
println("const treeData =\n" & descend(4, root) & ";");
}