Function _isValid

third_party/inputmask/inputmask.js:1302–1348

(position, c, strict)

                maskPos = isRTL ? pos.end : pos.begin;
            }
            function _isValid(position, c, strict) {
                var rslt = false;
                $.each(getTests(position), function(ndx, tst) {
                    var test = tst.match;
                    getBuffer(true);
                    rslt = test.fn != null ? test.fn.test(c, getMaskSet(), position, strict, opts, isSelection(pos)) : (c === test.def || c === opts.skipOptionalPartCharacter) && test.def !== "" ? {
                        c: getPlaceholder(position, test, true) || test.def,
                        pos: position
                    } : false;
                    if (rslt !== false) {
                        var elem = rslt.c !== undefined ? rslt.c : c, validatedPos = position;
                        elem = elem === opts.skipOptionalPartCharacter && test.fn === null ? getPlaceholder(position, test, true) || test.def : elem;
                        if (rslt.remove !== undefined) {
                            if (!$.isArray(rslt.remove)) rslt.remove = [ rslt.remove ];
                            $.each(rslt.remove.sort(function(a, b) {
                                return b - a;
                            }), function(ndx, lmnt) {
                                revalidateMask({
                                    begin: lmnt,
                                    end: lmnt + 1
                                });
                            });
                        }
                        if (rslt.insert !== undefined) {
                            if (!$.isArray(rslt.insert)) rslt.insert = [ rslt.insert ];
                            $.each(rslt.insert.sort(function(a, b) {
                                return a - b;
                            }), function(ndx, lmnt) {
                                isValid(lmnt.pos, lmnt.c, true, fromSetValid);
                            });
                        }
                        if (rslt !== true && rslt.pos !== undefined && rslt.pos !== position) {
                            validatedPos = rslt.pos;
                        }
                        if (rslt !== true && rslt.pos === undefined && rslt.c === undefined) {
                            return false;
                        }
                        if (!revalidateMask(pos, $.extend({}, tst, {
                            input: casing(elem, test, validatedPos)
                        }), fromSetValid, validatedPos)) {
                            rslt = false;
                        }
                        return false;
                    }
                });
                return rslt;
            }
            var result = true, positionsClone = $.extend(true, {}, getMaskSet().validPositions);
            if ($.isFunction(opts.preValidation) && !strict && fromSetValid !== true && validateOnly !== true) {
                result = opts.preValidation(getBuffer(), maskPos, c, isSelection(pos), opts, getMaskSet());