-// This file is prepended to the result of compile ecmalisp.lisp, and
-// contain runtime code that ecmalisp assumes to exist.
+// This file is prepended to the result of compile jscl.lisp, and
+// contain runtime code that jscl assumes to exist.
var window = this;
var nil;
-function globalEval (x) {
- return eval.call (window, x);
-}
+var lisp = {};
+
+globalEval = eval; // Just an indirect eval
function pv (x) { return x==undefined? nil: x; }
var values = mv;
function checkArgsAtLeast(args, n){
- if (args.length < n) throw 'too few arguments';
+ if (args < n) throw 'too few arguments';
}
function checkArgsAtMost(args, n){
- if (args.length > n) throw 'too many arguments';
+ if (args > n) throw 'too many arguments';
}
function checkArgs(args, n){
return r;
}
}
+
+// Return a new Array of strings, each either length-1, or length-2 (a UTF-16 surrogate pair).
+function codepoints(string) {
+ return string.split(/(?![\udc00-\udfff])/);
+}
+
+// Create and return a lisp string for the Javascript string STRING.
+function make_lisp_string (string){
+ var array = codepoints(string);
+ array.stringp = 1
+ return array;
+}
+
+function char_to_codepoint(ch) {
+ if (ch.length == 1) {
+ return ch.charCodeAt(0);
+ } else {
+ var xh = ch.charCodeAt(0) - 0xD800;
+ var xl = ch.charCodeAt(1) - 0xDC00;
+ return 0x10000 + (xh << 10) + (xl);
+ }
+}
+
+function char_from_codepoint(x) {
+ if (x <= 0xFFFF) {
+ return String.fromCharCode(x);
+ } else {
+ x -= 0x10000;
+ var xh = x >> 10;
+ var xl = x & 0x3FF;
+ return String.fromCharCode(0xD800 + xh) + String.fromCharCode(0xDC00 + xl);
+ }
+}
+
+// if a char (JS string) has the same number of codepoints after .toUpperCase(), return that, else the original.
+function safe_char_upcase(x) {
+ var xu = x.toUpperCase();
+ if (codepoints(xu).length == 1) {
+ return xu;
+ } else {
+ return x;
+ }
+}
+function safe_char_downcase(x) {
+ var xl = x.toLowerCase();
+ if (codepoints(xl).length == 1) {
+ return xl;
+ } else {
+ return x;
+ }
+}
+
+function xstring(x){ return x.join(''); }
+
+
+function Symbol(name, package_name){
+ this.name = name;
+ if (package_name)
+ this['package'] = package_name;
+}
+
+function lisp_to_js (x) {
+ if (typeof x == 'object' && 'length' in x && x.stringp == 1)
+ return xstring(x);
+ else if (typeof x == 'function'){
+ // Trampoline calling the Lisp function
+ return (function(){
+ var args = Array.prototype.slice.call(arguments);
+ for (var i in args)
+ args[i] = js_to_lisp(args[i]);
+ return lisp_to_js(x.apply(this, [pv, arguments.length].concat(args)));
+ });
+ }
+ else return x;
+}
+
+function js_to_lisp (x) {
+ if (typeof x == 'string')
+ return make_lisp_string(x);
+ else if (typeof x == 'function'){
+ // Trampoline calling the JS function
+ return (function(values, nargs){
+ var args = Array.prototype.slice.call(arguments, 2);
+ for (var i in args)
+ args[i] = lisp_to_js(args[i]);
+ return values(js_to_lisp(x.apply(this, args)));
+ });
+ } else return x;
+}