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Implement struct built-ins.

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* module/language/js-il/runtime.js
  (struct?): New primitive.
  (<applicable-struct-vtable>, record-type-vtable,
  set-struct-vtable-name!, make-struct): Implement built-ins.
This commit is contained in:
Ian Price 2017-08-02 22:44:27 +01:00
parent 2273eb4d06
commit ebe9d00153
1 changed files with 28 additions and 0 deletions
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28
module/language/js-il/runtime.js
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@ -443,6 +443,10 @@ scheme.Struct = function (vtable, nfields) {
return this; return this;
}; };
scheme.primitives["struct?"] = function (obj) {
return coerce_bool(obj instanceof scheme.Struct);
};
scheme.primitives["allocate-struct/immediate"] = function (vtable, nfields) { scheme.primitives["allocate-struct/immediate"] = function (vtable, nfields) {
return new scheme.Struct(vtable, nfields); return new scheme.Struct(vtable, nfields);
}; };
@ -908,3 +912,27 @@ def_guile0("struct-vtable?", function (self, cont, obj) {
var bool = coerce_bool(obj instanceof scheme.Struct && obj.is_vtable); var bool = coerce_bool(obj instanceof scheme.Struct && obj.is_vtable);
return cont(bool); return cont(bool);
}); });
var applicable_vtable = scm_make_struct(scm_standard_vtable, [new scheme.Symbol(vtable_base_layout.s)]);
applicable_vtable.children_applicable_vtables = true;
def_guile_val("<applicable-struct-vtable>", applicable_vtable);
def_guile_val("record-type-vtable", scm_standard_vtable); // FIXME:
def_guile0("set-struct-vtable-name!", function (self, cont, val, args) {
// FIXME:
return cont(scheme.FALSE);
});
def_guile0("make-struct", function (self, cont, vtable, tailsize) {
if (tailsize === 0) {
// make-struct/no-tail
var args = Array.prototype.slice.call(arguments, 4);
return cont(scm_make_struct(vtable, args));
} else {
console.log("make-struct with tail", arguments);
not_implemented_yet();
}
});