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jslisp.js
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jslisp.js
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/****************************************************************************\
******************************************************************************
** **
** Copyright (c) 2011 by Andrea Griffini **
** **
** Permission is hereby granted, free of charge, to any person obtaining **
** a copy of this software and associated documentation files (the **
** "Software"), to deal in the Software without restriction, including **
** without limitation the rights to use, copy, modify, merge, publish, **
** distribute, sublicense, and/or sell copies of the Software, and to **
** permit persons to whom the Software is furnished to do so, subject to **
** the following conditions: **
** **
** The above copyright notice and this permission notice shall be **
** included in all copies or substantial portions of the Software. **
** **
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, **
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF **
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND **
** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE **
** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION **
** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION **
** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. **
** **
******************************************************************************
\****************************************************************************/
d$$$42_start_time$42_ = (new Date).getTime();
d$$$42_current_module$42_ = "";
d$$$42_modules$42_ = {"" : { "*module-aliases*": {},
"*symbol-aliases*": {},
"*exports*": {}}};
d$$$42_module_aliases$42_ = d$$$42_modules$42_[""]["*module-aliases*"];
d$$$42_symbol_aliases$42_ = d$$$42_modules$42_[""]["*symbol-aliases*"];
d$$$42_exports$42_ = d$$$42_modules$42_[""]["*exports*"];
d$$$42_outgoing_calls$42_ = {};
d$$$42_used_globals$42_ = {};
d$$$42_debug$42_ = false;
d$$$42_function_context$42_ = [];
d$$$42_function_type_info$42_ = [];
d$$$42_function_closure$42_ = [];
d$$$42_timeout$42_ = null;
d$$$42_code_timeout$42_ = 20000;
d$$node_js = false;
var watchdog = setInterval(function(){
d$$$42_timeout$42_ = (new Date).getTime() + d$$$42_code_timeout$42_;
}, 100);
var ck = 0;
function tock() {
if (d$$$42_timeout$42_ &&
!(++ck & 4095) &&
(new Date).getTime() > d$$$42_timeout$42_) {
throw "Execution timeout";
}
}
var glob;
if (typeof window === "undefined")
{
// node.js
var glob = global;
exports.eval = function (x)
{
return eval(f$$js_compile(f$$read(x)));
};
glob["f$$display"] = f$$display = function(x)
{
console.log(x);
};
glob["f$$warning"] = f$$warning = function(x)
{
console.error(x);
};
f$$display.outcalls = [];
f$$display.usedglobs = [];
d$$node_js = glob.d$$node_js = true;
glob["fnode$$require"] = fnode$$require = function(x) { return require(x); };
fnode$$require.outcalls = [];
fnode$$require.usedglobs = [];
}
else
{
glob = window;
}
function stringify(x)
{
return JSON.stringify(x).substr(0); // Opera bug
}
function JSLSymbol(name, interned)
{
this.name = name;
if (!interned) this.interned = interned;
}
JSLSymbol.prototype.interned = true;
JSLSymbol.prototype.toString = function () {
var ix = this.name.indexOf("$$");
var mod = f$$demangle("$$" + this.name.substr(0, ix)) + ":";
if (mod === ":" || mod === d$$$42_current_module$42_ + ":")
mod = "";
return mod + f$$demangle(this.name);
};
function Namespace()
{
this.vars = {};
this.props = {};
this.stack = [];
this.current_frame = 0;
this.get = function(name, nouse)
{
name = "!" + name;
var res = this.vars[name], fc, i;
if (res && !nouse) this.props[name].used = true;
if (res && (fc = this.props[name].fc) !== d$$$42_function_context$42_[i = d$$$42_function_context$42_.length-1]) {
this.props[name].captured = true;
while (i >= 0 && d$$$42_function_context$42_[i] !== fc) {
d$$$42_function_closure$42_[i--] = true;
}
}
return res;
}
this.add = function(name, value)
{
name = "!" + name;
this.stack.push([name, this.vars[name], this.props[name]]);
this.vars[name] = value;
this.props[name] = {fc: d$$$42_function_context$42_[d$$$42_function_context$42_.length-1]};
};
this.begin = function()
{
this.stack.push(false);
this.stack.push(["", this.vars[""], this.props[""]]);
this.props[""] = {};
this.current_frame += 1;
};
this.end = function(warn_unused)
{
if (this.stack.length === 0)
throw new String("Internal error: Stack underflow in Namespace.end()");
for (var x=this.stack.pop(); x; x=this.stack.pop())
{
if (warn_unused &&
x[0] !== "" &&
!this.props[""].ignorable &&
!this.props[x[0]].used &&
!this.props[x[0]].ignorable)
f$$warning("Local name " +
f$$demangle(x[0].substr(1)) +
" defined but not used");
this.vars[x[0]] = x[1];
this.props[x[0]] = x[2];
if (this.stack.length === 0)
throw new String("Internal error: Stack underflow in Namespace.end()");
}
};
return this;
}
var lisp_literals = [];
var lexvar = new Namespace();
var lexfunc = new Namespace();
var lexmacro = new Namespace();
var lexsmacro = new Namespace();
var specials = {};
glob["f$$mangle"] = f$$mangle = function(x)
{
var res = "";
for (var i=0; i<x.length; i++)
{
if (x[i] === '-')
{
res += '_';
}
else if ((x[i] >= 'a' && x[i] <= 'z') ||
(x[i] >= 'A' && x[i] <= 'Z'))
{
res += x[i];
}
else
{
res += ("$" + x.charCodeAt(i) + "_");
}
}
return "$$" + res;
};
f$$mangle.documentation = ("[[(mangle x)]]\n" +
"Returns the javascript version of a lisp symbol name [x] "+
"by quoting characters forbidden in javascript identifiers");
glob["f$$intern"] = f$$intern = function(name, module, lookup_only)
{
var x;
// Keywords END with a colon and are always in the global module
if (name[name.length-1] === ":")
module = "";
// Anything before the colon is the module name (global module being "").
if ((typeof module === "undefined") && (x = name.indexOf(":")) >= 0)
{
module = name.substr(0, x);
name = name.substr(x + 1);
}
// Imported symbols lookup
if ((typeof module === "undefined") && (x = d$$$42_symbol_aliases$42_["!"+name]))
return x;
// Check for a nicknamed module
var m = (typeof module === "undefined") ? d$$$42_current_module$42_ : (d$$$42_module_aliases$42_["!"+module]||module);
m = f$$mangle(m).substr(2);
var mangled = f$$mangle(name);
var mname = m + mangled;
x = glob["s" + mname];
if (x === undefined)
{
if ((typeof module === "undefined") && (x = glob["s" + mangled]))
return x;
if (lookup_only) return null;
x = glob["s" + mname] = new JSLSymbol(mname, true);
eval("s" + mname + " = glob['s" + mname + "']");
if (name[name.length-1] === ':')
{
glob["d" + mname] = x;
eval("d" + mname + " = glob['d" + mname + "']");
}
}
return x;
};
f$$intern.documentation = ("[[(intern name &optional module lookup-only)]]\n" +
"Create and returns an interned symbol with the specified [name] into " +
"[module] or just returns that symbol if it has been already interned. " +
"If the name ends with a colon ':' character then the module is ignored " +
"interning the symbol in the global module instead and the symbol value " +
"cell is also bound to the symbol itself (keyword symbol). If no module " +
"parameter is specified and the symbol is listed in [*symbol-aliases*] " +
"then that value is returned, otherwise if it is not found in current " +
"module then before performing the interning operation the symbol is " +
"first looked up also in the global module. If [lookup-only] is true " +
"then no symbol creation is performed in any case and [null] is " +
"returned if no symbol can be found.");
f$$intern.arglist = [f$$intern("name"), f$$intern("&optional"), f$$intern("module"), f$$intern("lookup-only")];
f$$mangle.arglist = [f$$intern("x")];
f$$intern.usedglobs = f$$intern.outcalls = f$$mangle.usedglobs = f$$mangle.outcalls = [];
var constants = {};
constants[f$$intern('null').name] = 'null';
constants[f$$intern('true').name] = 'true';
constants[f$$intern('false').name] = 'false';
constants[f$$intern('undefined').name] = 'undefined';
constants[f$$intern('NaN').name] = 'NaN';
constants[f$$intern('infinity').name] = 'Infinity';
constants[f$$intern('-infinity').name] = '(-Infinity)';
f$$intern("js-code");
f$$intern("declare");
f$$intern("ignorable");
f$$intern("type");
f$$intern("return-type");
function defun(name, doc, f, arglist, usedglobs, outcalls)
{
var s = f$$intern(name);
glob["f" + s.name] = f;
eval("f" + s.name + " = glob['f" + s.name + "']");
f.documentation = doc;
f.arglist = arglist;
f.usedglobs = usedglobs;
f.outcalls = outcalls;
}
function defmacro(name, doc, f, arglist)
{
var s = f$$intern(name);
glob["m" + s.name] = f;
eval("m" + s.name + " = glob['m" + s.name + "'];");
f.documentation = doc;
f.arglist = arglist;
}
defun("demangle",
"[[(demangle x)]]\n" +
"Returns a lisp name [x] by decoding a javascript name produced by [(mangle ...)]",
function(x)
{
var i = x.indexOf("$$");
return x.substr(i+2)
.replace(/_/g,"-")
.replace(/(\$[0-9]+-)/g,
function(s)
{
return String.fromCharCode(parseInt(s.substr(1, s.length-2)));
});
},
[f$$intern("x")], [], []);
defun("symbol-module",
"[[(symbol-module x)]]\n" +
"Returns the module name of symbol [x] or [undefined] if the symbol is uninterned.",
function(x)
{
if (x.interned)
return f$$demangle("$$" + x.name.substr(0, x.name.indexOf("$$")));
return undefined;
},
[s$$x],[],["$$demangle"]);
defun("module-symbol",
"[[(module-symbol x &optional module)]]\n"+
"Returns a symbol with same name as symbol [x] after interning it " +
"in the specified [module] or in current module if no module is " +
"specified. If the symbol [x] is already interned in [module] then " +
"simply returns it. As side effect an eventually defined alias for the " +
"symbol in [module] will be removed.",
function(x, module)
{
if (typeof module === "undefined") module = d$$$42_current_module$42_;
var name = f$$demangle(x.name);
var s = f$$intern(name, module);
delete d$$$42_modules$42_[module]["*symbol-aliases*"]["!" + name];
return s;
},
[s$$x, f$$intern("&optional"), f$$intern("module")],[],["$$intern","$$demangle"]);
defun("documentation",
"[[(documentation x)]]\n" +
"Returns the documentation string for function [x].",
function(x)
{
return x.documentation;
},
[s$$x]);
defun("set-documentation",
"[[(set-documentation x doc)]]\n" +
"Sets the documentation string for function [x] to [doc].",
function(x, doc)
{
x.documentation = doc;
},
[s$$x, f$$intern("doc")]);
defun("arglist",
"[[(arglist x)]]\n" +
"Returns the argument list for function [x].",
function(x)
{
return x.arglist || null;
},
[s$$x]);
defun("set-arglist",
"[[(set-arglist x arglist)]]\n" +
"Sets the argument list for function [x] to [arglist].",
function(x, arglist)
{
x.arglist = arglist;
},
[s$$x, f$$intern("arglist")]);
defmacro("arglist",
"[[(arglist x)]]\n" +
"Returns the argument list for function [x].",
function(x)
{
return [s$$js_code, "(" + f$$js_compile(x) + ".arglist)"];
},
[s$$x]);
defmacro("set-arglist",
"[[(set-arglist x arglist)]]\n" +
"Sets the argument list for function [x] to [arglist].",
function(x, arglist)
{
return [s$$js_code, "(" + f$$js_compile(x) +
".arglist=" +
f$$js_compile(arglist) + ")"];
},
[s$$x, f$$intern("arglist")]);
defun("number?", "[[(number? x)]]\nReturns true if and only if [x] is a number (including [NaN])",
function(x) { return (typeof x) === "number"; }, [s$$x], [], []);
defun("string?", "[[(string? x)]]\nReturns true if and only if [x] is a string",
function(x) { return (typeof x) === "string"; }, [s$$x], [], []);
defun("list?", "[[(list? x)]]\nReturns true if and only if [x] is a list",
function(x) { return (x && x.constructor === Array) ? true : false; }, [s$$x], [], []);
defun("symbol?", "[[(symbol? x)]]\nReturns true if and only if [x] is a symbol",
function(x) { return (x && x.constructor === JSLSymbol) ? true : false; }, [s$$x], [], []);
defun("js-eval",
"[[(js-eval x)]]\n" +
"Javascript evaluation of a string at runtime.",
function(x) { return eval(x); }, [s$$x], [], []);
defun("symbol-function",
"[[(symbol-function x)]]\n" +
"Returns the function cell of a symbol [x] or [undefined] if that function is not present. " +
"Lookup doesn't consider lexical function definitions (e.g. [(labels ...)]).",
function(x) { return x.interned ? glob["f" + x.name] : x.f; }, [s$$x], [], []);
defun("set-symbol-function",
"[[(set-symbol-function x f)]]\n" +
"Sets the function cell of a symbol [x] to the specified function [f]. It doesn't affect "+
"lexical function definitions (e.g. [(lables ...)]).",
function(x, y) { return x.interned ? (glob["f" + x.name] = y) : (x.f = y); }, [s$$x, f$$intern("f")], [], []);
defun("symbol-value",
"[[(symbol-value x)]]\n" +
"Returns the current value cell of a symbol [x] or [undefined] if that symbol has no value. " +
"Lookup doesn't consider lexical symbols.",
function(x) { return x.interned ? glob["d" + x.name] : x.d; }, [s$$x], [], []);
defun("set-symbol-value",
"[[(set-symbol-value x y)]]\n" +
"Sets the current value cell of a symbol [x] to [y]. It doesn't affect lexical bindings.",
function(x, y) { return x.interned ? (glob["d" + x.name] = y) : (x.d = y); }, [s$$x, f$$intern("y")], [], []);
defun("symbol-macro",
"[[(symbol-macro x)]]\n" +
"Returns the current macro expander function cell of a symbol [x] or [undefined] if that " +
"symbol has no macro expander function set. Lookup doesn't consider lexical macros.",
function(x) { return x.interned ? glob["m" + x.name] : x.m; }, [s$$x]);
defun("set-symbol-macro",
"[[(set-symbol-macro x f)]]\n" +
"Sets the macro expander function cell of a symbol [x] to [y]. It doesn't affect lexical macros.",
function(x, f) { return x.interned ? (glob["m" + x.name] = f) : (x.m = f); }, [s$$x, s$$f]);
defun("symbol-name",
"[[(symbol-name x)]]\n" +
"Returns the lisp symbol name of a symbol [x] as a string object.",
function(x) { return f$$demangle(x.name); }, [s$$x], [], ["$$demangle"]);
defun("symbol-full-name",
"[[(symbol-name x)]]\n" +
"Returns the qualified lisp symbol name of a symbol [x] as a string object.",
function(x) {
var ix = x.name.indexOf("$$");
var mod = f$$demangle("$$" + x.name.substr(0, ix)) + ":";
if (mod === ":") mod = "";
return mod + f$$demangle(x.name);
}, [s$$x], [], ["$$demangle"]);
defmacro("define-symbol-macro",
"[[(define-symbol-macro x y)]]\n" +
"Sets the global symbol-macro expansion of unevaluated symbol [x] to be the unevaluated form [y].",
function(x, y)
{
var i = lisp_literals.indexOf(y);
if (i === -1)
{
i = lisp_literals.length;
lisp_literals.push(y);
}
d$$$42_used_globals$42_["q#"+i] = true;
return [s$$js_code, "s" + x.name + ".symbol_macro=lisp_literals[" + i + "]"];
},
[f$$intern("x"), f$$intern("y")]);
defmacro("if",
"[[(if condition then-part &optional else-part)]]\n" +
"Conditional evaluation form. Evaluates either [then-part] only or [else-part] only (not both) "+
"depending on whether or not the evaluation of [condition] returned a true value.",
function(condition, then_part, else_part)
{
return [s$$js_code, ("(" +
f$$js_compile(condition) +
"?" +
f$$js_compile(then_part) +
":" +
f$$js_compile(else_part) +
")")];
},
[f$$intern("condition"), f$$intern("then-part"), f$$intern("&optional"), f$$intern("else-part")]);
defmacro("defvar",
"[[(defvar variable &optional value)]]\n" +
"Sets the value cell of [variable] only if is not already defined, and also marks the " +
"symbol as 'special' so that future value bindings on this symbol will always be dynamic " +
"and not lexical.",
function(name, value)
{
var v = f$$module_symbol(name).name;
specials[v] = "d" + v;
return [s$$js_code, "(d" + v + " = ((glob['d" + v + "']!=undefined)?d" + v + ":" + f$$js_compile(value) + "))"];
},
[f$$intern("variable"), f$$intern("&optional"), f$$intern("value")]);
function implprogn(x)
{
var res = "(";
var sep = "";
for (var i=0; i<x.length; i++)
{
var y = f$$js_compile(x[i]);
if (y !== "null") {
res += sep + y;
sep = ",";
}
}
res += ")";
if (res === "()") res = "(null)";
return res;
}
defmacro("progn",
"[[(progn &rest body)]]\n" +
"Evaluates all the forms of [body] in sequence, returning as value the value of the last one.",
function()
{
return [s$$js_code, implprogn(Array.prototype.slice.call(arguments))];
},
[f$$intern("&rest"), f$$intern("body")]);
defmacro("let",
"[[(let ((x1 v1)(x2 v2) ... (xn vn)) &rest body)]]\n" +
"Evaluates all the forms of [body] by first establishing lexical/dynamic bindings " +
"for the variables [x1=v1], [x2=v2] ... [xn=vn]. The evaluation of the forms [v1]...[vn] " +
"does /NOT/ consider the bindings that will be established by [(let ...)].",
function(bindings)
{
var body = Array.prototype.slice.call(arguments, 1);
if (bindings.length == 0)
return [f$$intern("progn")].concat(body);
lexvar.begin();
lexsmacro.begin();
var osmacro = [];
var spe = [];
var res = "((function(";
for (var i=0; i<bindings.length; i++)
{
if (bindings[i].length != 2 ||
!f$$symbol$63_(bindings[i][0]))
throw new String("Invalid 'let' binding " + f$$str_value(bindings[i]));
if (i > 0) res += ",";
var name = bindings[i][0].name;
if (specials[name])
{
res += "sd" + name;
spe.push(name);
}
else
{
lexvar.add(name, "d" + lexvar.current_frame + "_" + name);
res += "d" + lexvar.current_frame + "_" + name;
}
lexsmacro.add(name, undefined);
if (bindings[i][0].symbol_macro)
{
osmacro.push([bindings[i][0], bindings[i][0].symbol_macro]);
bindings[i][0].symbol_macro = undefined;
}
}
res += "){";
var cbody = implprogn(body);
// Check if we can avoid creating a nested function
// scope because all bindings are local and are not
// captured in the body. In such a case the bindings
// are just function-level locals of the closest
// function scope (this works because the *compiled*
// name of a lexical is already unique).
var canlift = d$$$42_function_context$42_.length > 0;
for (var i=0; canlift && i<bindings.length; i++)
{
var name = bindings[i][0].name;
var vp;
if (specials[name] || !(vp = lexvar.props["!"+name]) || vp.captured)
canlift = false;
}
if (canlift) {
// This LET form can be simplified to a sequence
// of assignments to locals followed by the body
// and there's no need of a nested scope.
var cfc = d$$$42_function_context$42_[d$$$42_function_context$42_.length-1];
var lnames = [];
for (var i=0; i<bindings.length; i++)
{
var cname = lexvar.get(bindings[i][0].name, true);
lnames.push(cname);
cfc.push(cname);
}
lexsmacro.end();
lexvar.end(true);
for (var i=0; i<osmacro.length; i++)
osmacro[i][0].symbol_macro = osmacro[i][1];
res = "(";
for (var i=0; i<lnames.length; i++)
{
if (i > 0) res += ",";
res += lnames[i] + "=(" + f$$js_compile(bindings[i][1]) + ")";
}
if (lnames.length > 0) res += ",";
res += cbody + ")";
}
else
{
// A full nested scope is necessary
if (spe.length)
{
for (var i=0; i<spe.length; i++)
{
res += "var osd" + spe[i] + "=d" + spe[i] + ";";
res += "d" + spe[i] + "=sd" + spe[i] + ";";
}
res += "var res=";
res += cbody;
res += ";";
for (var i=0; i<spe.length; i++)
{
res += "d" + spe[i] + "=osd" + spe[i] + ";";
}
res += "return res;})(";
}
else
{
res += "return " + cbody + "})(";
}
lexsmacro.end();
lexvar.end(true);
for (var i=0; i<osmacro.length; i++)
osmacro[i][0].symbol_macro = osmacro[i][1];
for (var i=0; i<bindings.length; i++)
{
if (i > 0) res += ",";
res += f$$js_compile(bindings[i][1]);
}
res += "))";
}
return [s$$js_code, res];
},
[f$$intern("bindings"), f$$intern("&rest"), f$$intern("body")]);
defmacro("lambda",
"[[(lambda (arg-1 ... arg-n) &rest body)]]\n" +
"Returns a function object that when called will lexically/dynamically bind " +
"parameters to [arg1], [arg2], ... [arg-n] and that will evaluate all forms " +
"in [body] in sequence returning the last evaluated form value as result",
function(args)
{
// Poor version of &optional to help bootstrapping (no support for
// default values; just removes the keyword from the arg list)
var iopt = args.indexOf(s$$$38_optional);
if (iopt >= 0) args = args.slice(0,iopt).concat(args.slice(1+iopt));
// Create a function context so LET bindings that are not
// captured can be lifted to simple local variables (for
// unknown reasons recent Android implementations have a
// very low limit for nested functions). A function
// context is simply a list of extra local variables to
// declare
d$$$42_function_context$42_.push([]);
// Type declarations for this function. Types can be
// optionally declared for arguments and/or return value
// to help finding type errors at compile time. TODO:
// Add deduction logic for simple cases when return type
// is not declared.
d$$$42_function_type_info$42_.push({});
// True if the function is indeed a closure
d$$$42_function_closure$42_.push(false);
var current_outgoing_calls = d$$$42_outgoing_calls$42_;
d$$$42_outgoing_calls$42_ = {};
var current_used_globals = d$$$42_used_globals$42_;
d$$$42_used_globals$42_ = {};
var body = Array.prototype.slice.call(arguments, 1);
lexvar.begin();
lexsmacro.begin();
try
{
var osmacro = [];
var spe = [];
var res = "(function(";
var rest = null;
var nargs = 0;
for (var i=0; i<args.length; i++)
{
var v = args[i].name;
if (v === "$$$38_rest")
{
rest = args[i+1].name;
if (!specials[rest])
lexvar.add(rest, "d"+ rest);
lexsmacro.add(rest, undefined);
}
else if (!rest)
{
if (i > 0) res += ",";
if (specials[v])
{
res += "sd" + v;
spe.push(v);
}
else
{
res += "d" + v;
lexvar.add(v, "d" + v);
}
nargs++;
lexsmacro.add(v, undefined);
if (args[i].symbol_macro)
{
osmacro.push([args[i], args[i].symbol_macro]);
args[i].symbol_macro = undefined;
}
}
}
res += "){";
for (var i=0; i<spe.length; i++)
{
res += "var osd" + spe[i] + "=d" + spe[i] + ";";
res += "d" + spe[i] + "=sd" + spe[i] + ";";
}
if (rest)
{
if (specials[rest])
{
spe.push(rest);
res += "var osd" + rest + "=d" + rest + ";";
}
else
{
res += "var ";
}
res += "d" + rest + "=Array.prototype.slice.call(arguments,"+nargs+");";
}
var cbody = "";
if (spe.length === 0)
{
cbody += "return " + implprogn(body) + ";})";
}
else
{
cbody += "var res=";
cbody += implprogn(body);
cbody += ";"
for (var i=0; i<spe.length; i++)
{
cbody += "d" + spe[i] + "=osd" + spe[i] + ";";
}
cbody += "return res;})";
}
// We compiled the body so now we can check if any
// lifted LET binding should be declared as
// function-level local
var lb = d$$$42_function_context$42_.pop();
if (lb.length) {
res += "var " + lb.join(", ") + ";";
}
res += cbody;
var ocnames = "";
var ugnames = "";
for (var k in d$$$42_outgoing_calls$42_)
{
ocnames += "," + stringify(k);
current_outgoing_calls[k] = true;
}
for (var k in d$$$42_used_globals$42_)
{
ugnames += "," + stringify(k);
current_used_globals[k] = true;
}
var li = lisp_literals.length;
lisp_literals[li] = args;
lisp_literals[li+1] = d$$$42_function_type_info$42_.pop();
var cl = d$$$42_function_closure$42_.pop();
// Copy parameter type declarations to fti for compile-time checking
for (var i=0; i<args.length; i++) {
var v = args[i];
if (f$$symbol$63_(v)) {
var p = lexvar.props["!"+v.name];
if (p && p.type) {
lisp_literals[li+1][v.name] = p.type;
}
}
}
res = ("((function(){" +
"var f =" +
res +
";" +
"f.usedglobs=[" +
ugnames.substr(1) +
"];f.outcalls=[" +
ocnames.substr(1) +
"];f.arglist=lisp_literals[" + li +
"];f.fti=lisp_literals[" + (li+1) +
"];f.closure=" + cl + ";return f;})())");
return [s$$js_code, res];
}
finally
{
lexvar.end(true);
lexsmacro.end();
for (var i=0; i<osmacro.length; i++)
osmacro[i][0].symbol_macro = osmacro[i][1];
d$$$42_outgoing_calls$42_ = current_outgoing_calls;
d$$$42_used_globals$42_ = current_used_globals;
}
},
[f$$intern("args"), f$$intern("&rest"), f$$intern("body")]);
defun("logcount",
"[[(logcount x)]]\n" +
"Returns the number of bits set to 1 in the binary representation of the integer number [x].",
function(x)
{
var n = 0;
while (x)
{
x &= x-1;
n++;
}
return n;
},
[s$$x],[],[]);
defun("list",
"[[(list &rest args)]]\n" +
"Returns the list containing the value of the expressions in [args].",
function()
{
return Array.prototype.slice.call(arguments);
},
[f$$intern("&rest"), f$$intern("args")],[],[]);
defun("funcall",
"[[(funcall f &rest args)]]\n" +
"Calls the function object [f] passing specified values as parameters.",
function()
{
return arguments[0].apply(glob, Array.prototype.slice.call(arguments, 1));
},
[f$$intern("f"), f$$intern("&rest"), f$$intern("args")],[],[]);
defmacro("labels",
"[[(labels ((func1 (x1 x2 ... xn) f1 f2 .. fn)...) &rest body)]]\n" +
"Excutes the forms in [body] by first establishing a lexical binding for the " +
"function names [func1], [func2] ... [funcn]. When compiling the body forms any "+
"macros defined outside the [(labels ...)] form with names [func1], [func2], "+
"... [funcn] will be ignored.",
function(bindings)
{
var body = Array.prototype.slice.call(arguments, 1);
// First hide all macros and lexical macros named as defined functions
// and also adds immediately the functions to the lexical functions list
lexfunc.begin();
lexmacro.begin();
try
{
var hmacros = [];
for (var i=0; i<bindings.length; i++)
{
var v = bindings[i][0].name;
lexmacro.add(v, undefined);
if (glob["m" + v])
{
hmacros.push([v, glob["m" + v]]);
glob["m" + v] = undefined;
}
lexfunc.add(v, {arglist:bindings[i][1]});
}
// Compile function definitions
var res = "((function(){";
for (var i=0; i<bindings.length; i++)
{
var v = bindings[i][0].name;
res += "var f" + v + "=" +
f$$js_compile([f$$intern("lambda")].concat(bindings[i].slice(1))) + ";";
}
res += "return ";
res += implprogn(body);
res += ";})())";
}
finally
{
lexfunc.end();
lexmacro.end();
// Restore hidden global macros
for (var i=0; i<hmacros.length; i++)
glob["m" + hmacros[i][0]] = hmacros[i][1];
}
return [s$$js_code, res];
},
[f$$intern("bindings"), f$$intern("&rest"), f$$intern("body")]);
defmacro("setq",
"[[(setq name value)]]\n" +
"Sets the current value of variable [name]. When [name] is not a symbol or is " +
"currently globally or lexically bound to a symbol macro [setq] is transformed " +
"in a corresponding [(setf ...)] form.",
function(name, value)
{
if (f$$symbol$63_(name) &&
!name.symbol_macro &&
!lexsmacro.get(name.name))
{
return [s$$js_code, "(d" + name.name + "=" + f$$js_compile(value) + ")"];
}
else
{
return [f$$intern("setf"), name, value];
}
},
[f$$intern("name"), f$$intern("value")]);
defmacro("quote",
"[[(quote x)]]\n" +
"Returns the unevaluated form [x] as result.",
function(x)
{
if (f$$symbol$63_(x) && x.interned)
{
d$$$42_used_globals$42_["s#" + x.name] = true;
return [s$$js_code, "s" + x.name];
}
if (f$$number$63_(x) || f$$string$63_(x))
return [s$$js_code, stringify(x)];
var i = lisp_literals.indexOf(x);
if (i === -1)
{
i = lisp_literals.length;
lisp_literals.push(x);
}
d$$$42_used_globals$42_["q#"+i] = true;
return [s$$js_code, "lisp_literals[" + i + "]"];
},
[s$$x]);
defun("eval",
"[[(eval x)]]\n" +
"Evaluates the expression [x] without considering lexical bindings.",
function(x)
{
var jscode = f$$js_compile(x);
return eval(jscode);
},
[s$$x],[],["$$js_compile"]);
defun("macroexpand-1",
"[[(macroexpand-1 x)]]\n" +
"Expands the macro call or symbol in [x] or returns [x] unaltered if " +
"it's neither a macro invocation nor a macro symbol. Lexical macro bindings are NOT considered.",
function(x)
{
if (f$$symbol$63_(x) && x.symbol_macro)
x = x.symbol_macro;
else if (f$$list$63_(x) && f$$symbol$63_(x[0]) && glob["m" + x[0].name])
x = glob["m" + x[0].name].apply(glob, x.slice(1));
return x;
},
[s$$x]);
defun("macroexpand",
"[[(macroexpand x)]]\n" +
"Repeats macro expansion process of [macroexpand-1] on [x] until no more expansions are possible.",
function(x)
{
for (;;)
{
if (f$$symbol$63_(x) && x.symbol_macro)
x = x.symbol_macro;
else if (f$$list$63_(x) && f$$symbol$63_(x[0]) && glob["m" + x[0].name])
x = glob["m" + x[0].name].apply(glob, x.slice(1));
else break;
}
return x;
},
[s$$x]);