@wener/miniquery
Version:
SQL Where like **safe** filter expression for ORM.
221 lines (220 loc) • 8.52 kB
JavaScript
function _array_like_to_array(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
return arr2;
}
function _array_without_holes(arr) {
if (Array.isArray(arr)) return _array_like_to_array(arr);
}
function _iterable_to_array(iter) {
if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}
function _non_iterable_spread() {
throw new TypeError("Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _to_consumable_array(arr) {
return _array_without_holes(arr) || _iterable_to_array(arr) || _unsupported_iterable_to_array(arr) || _non_iterable_spread();
}
function _unsupported_iterable_to_array(o, minLen) {
if (!o) return;
if (typeof o === "string") return _array_like_to_array(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(n);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _array_like_to_array(o, minLen);
}
function get(data, ref) {
var current = data;
var _iteratorNormalCompletion = true, _didIteratorError = false, _iteratorError = undefined;
try {
for(var _iterator = ref[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true){
var key = _step.value;
switch(current){
case null:
case undefined:
return current;
}
if (Object.hasOwn(current, key)) {
current = current[key];
} else {
return undefined;
}
}
} catch (err) {
_didIteratorError = true;
_iteratorError = err;
} finally{
try {
if (!_iteratorNormalCompletion && _iterator.return != null) {
_iterator.return();
}
} finally{
if (_didIteratorError) {
throw _iteratorError;
}
}
}
return current;
}
export function resolveQuery(ast) {
var _ref = arguments.length > 1 && arguments[1] !== void 0 ? arguments[1] : {}, _ref_context = _ref.context, context = _ref_context === void 0 ? {} : _ref_context, _ref_resolveRef = _ref.resolveRef, resolveRef = _ref_resolveRef === void 0 ? function(param) {
var path = param.path;
var val = get(context, path);
if (typeof val === 'function') {
return null;
}
return val;
} : _ref_resolveRef, _ref_resolveFunc = _ref.resolveFunc, resolveFunc = _ref_resolveFunc === void 0 ? function(param) {
var name = param.name, args = param.args, resolve = param.resolve;
var val = get(context, [
name
]);
if (typeof val === 'function') {
return val.apply(void 0, _to_consumable_array(args.map(function(e) {
return resolve(e);
})));
}
throw new Error('Function "'.concat(name, '" not found in context'));
} : _ref_resolveFunc;
var _eval = function(e) {
return resolveQuery(e, {
context: context,
resolveRef: resolveRef,
resolveFunc: resolveFunc
});
};
switch(ast.type){
case 'literal':
return ast.value;
case 'ref':
return resolveRef({
path: ast.value
});
case 'func':
return resolveFunc({
name: ast.name,
args: ast.args,
resolve: _eval
});
case 'list':
return ast.items.map(function(e) {
return _eval(e);
});
case 'unary':
{
var v = _eval(ast.expr);
switch(ast.op){
case 'NOT':
case '!':
return !v;
case '+':
return +v;
case '-':
return -v;
default:
throw new Error("Unsupported unary op: ".concat(ast.op));
}
}
case 'binary':
{
var l = _eval(ast.left);
var r = _eval(ast.right);
if (l === null || l === undefined || r === null || r === undefined) {
return null;
}
switch(ast.op){
case '+':
return l + r;
case '-':
return l - r;
case '*':
return l * r;
case '/':
return l / r;
case '%':
return l % r;
default:
throw new Error("Unsupported binary op: ".concat(ast.op));
}
}
case 'logic':
{
if (ast.op === 'AND') return ast.exprs.every(function(e) {
return _eval(e);
});
if (ast.op === 'OR') return ast.exprs.some(function(e) {
return _eval(e);
});
throw new Error("Unsupported logic op: ".concat(ast.op));
}
case 'case':
{
var v1 = ast.condition ? _eval(ast.condition) : true;
var _iteratorNormalCompletion = true, _didIteratorError = false, _iteratorError = undefined;
try {
for(var _iterator = ast.cases[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true){
var _step_value = _step.value, w = _step_value.when, t = _step_value.then;
if (_eval(w) === v1) {
return _eval(t);
}
}
} catch (err) {
_didIteratorError = true;
_iteratorError = err;
} finally{
try {
if (!_iteratorNormalCompletion && _iterator.return != null) {
_iterator.return();
}
} finally{
if (_didIteratorError) {
throw _iteratorError;
}
}
}
if (ast.else) {
return _eval(ast.else);
}
return null;
}
case 'compare':
{
var l1 = _eval(ast.left);
var r1 = Array.isArray(ast.right) ? ast.right.map(function(e) {
return _eval(e);
}) : _eval(ast.right);
switch(ast.op){
case '=':
case '==':
return l1 === r1;
case '!=':
case '<>':
return l1 !== r1;
case '>':
return l1 > r1;
case '>=':
return l1 >= r1;
case '<':
return l1 < r1;
case '<=':
return l1 <= r1;
case 'IN':
return Array.isArray(r1) && r1.includes(l1);
case 'NOT IN':
return Array.isArray(r1) && !r1.includes(l1);
case 'BETWEEN':
return Array.isArray(r1) && l1 >= r1[0] && l1 <= r1[1];
case 'NOT BETWEEN':
return Array.isArray(r1) && (l1 < r1[0] || l1 > r1[1]);
case 'IS':
return l1 === r1;
case 'IS NOT':
return l1 !== r1;
default:
throw new Error("Unsupported compare op: ".concat(ast.op));
}
}
default:
throw new Error("Unknown AST node type: ".concat(ast.type));
}
}