3 function pv (x) { return x==undefined? nil: x; }
7 r['multiple-value'] = true;
8 for (var i=0; i<arguments.length; i++)
13 function forcemv (x) {
14 return typeof x == 'object' && 'multiple-value' in x? x: mv(x);
17 // NOTE: Define VALUES to be MV for toplevel forms. It is because
18 // `eval' compiles the forms and execute the Javascript code at
19 // toplevel with `js-eval', so it is necessary to return multiple
20 // values from the eval function.
23 function checkArgsAtLeast(args, n){
24 if (args.length < n) throw 'too few arguments';
27 function checkArgsAtMost(args, n){
28 if (args.length > n) throw 'too many arguments';
31 function checkArgs(args, n){
32 checkArgsAtLeast(args, n);
33 checkArgsAtMost(args, n);
36 // Improper list constructor (like LIST*)
38 if (arguments.length == 1)
41 var i = arguments.length-1;
42 var r = arguments[i--];
44 r = {car: arguments[i], cdr: r};