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Implement basic `equal?' implementation

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* module/language/js-il/runtime.js (equal?): Remove primitive.
  Implement as builtin procedure. This version Only handles pairs.
This commit is contained in:
Ian Price 2017-08-14 16:26:39 +01:00
parent 024bd93b0d
commit 3f9bc2dbb0
1 changed files with 18 additions and 2 deletions
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20
module/language/js-il/runtime.js
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@ -496,8 +496,6 @@ scheme.primitives["eqv?"] = function(x, y) {
return coerce_bool(x === y);
};
scheme.primitives["equal?"] = not_implemented_yet;
// Fluids
scheme.Fluid = function (x) {
this.value = x;
@ -761,6 +759,24 @@ def_guile0("append", function (self, cont, l1, l2) {
return cont(l);
});
function scm_equal(x,y) {
if (x instanceof scheme.Pair) {
if (y instanceof scheme.Pair) {
return (scm_equal(x.car,y.car) && scm_equal(x.cdr,y.cdr));
} else {
return false;
}
} else if (y instanceof scheme.Pair) {
return false;
} else {
return (x === y);
}
}
def_guile0("equal?", function (self, cont, x, y) {
return cont(coerce_bool(scm_equal(x,y)));
});
def_guile0("memq", function (self, cont, val, args) {
return cont(scheme.FALSE);
});