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Merged
brettz9 merged 2 commits into from
Jan 13, 2020
Merged

- Fix: wrap: false returning inconsistent data types #111

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b31aae2
- Fix: wrap: false returning inconsistent data types
Dec 15, 2019
eb2e0f4
- Refactory fix for wrap:false to not incur performance cost
Dec 22, 2019
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- Refactory fix for wrap:false to not incur performance cost
  • Loading branch information
Cache Hamm committed Dec 22, 2019
commit eb2e0f42258aebcbfccc130ad5ce634a14019946
80 changes: 18 additions & 62 deletions dist/index-es.js
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Original file line number Diff line number Diff line change
Expand Up @@ -480,7 +480,7 @@ JSONPath.prototype.evaluate = function (expr, json, callback, otherTypeCallback)
return wrap ? [] : undefined;
}

if (!wrap && this.isSingularResult(result, exprList)) {
if (!wrap && result.length === 1 && !result[0].hasArrExpr) {
return this._getPreferredOutput(result[0]);
}

Expand Down Expand Up @@ -522,52 +522,6 @@ JSONPath.prototype._getPreferredOutput = function (ea) {
return JSONPath.toPointer(ea.path);
}
};
/**
* Detect filter expressions.
* @param {string}loc
* @returns {boolean}
*/


JSONPath.prototype.isFilterExpr = function (loc) {
return loc.indexOf('?(') === 0;
};
/**
* Detects operators in the expression list that require an array result.
* an array of results. If no such operator exists, the result
* will be treated as a singular value.
*
* For example, the following paths reference singular results:
* "store.book[0]" - specific book
* "store.bicycle.red" - single property of a single object
*
* Conversely, the following paths will always result in an array,
* because they can generate multiple results depending on the dataset:
* $.store.book[0][category,author] - category,author will return 2 values
* $..book - ".." will recurse through the store object
* $.store.book[1:2] - indicates a range within the array
* $.store.book[*] - wild card indicates multiple results
* $.store.book[?(@.isbn)] - filtering
*/

/**
* @param {PlainObject} result - json path result
* @param {array} exprList - array of json path expressions
* @returns {boolean}
*/


JSONPath.prototype.isSingularResult = function (result, exprList) {
var _this2 = this;

return result.length === 1 && !exprList.includes('*') && !exprList.includes('..') && exprList.every(function (loc) {
return !_this2.isFilterExpr(loc);
}) && exprList.every(function (loc) {
return !loc.includes(',');
}) && exprList.every(function (loc) {
return !loc.includes(':');
});
};

JSONPath.prototype._handleCallback = function (fullRetObj, callback, type) {
if (callback) {
Expand All @@ -587,11 +541,12 @@ JSONPath.prototype._handleCallback = function (fullRetObj, callback, type) {
* @param {string} parentPropName
* @param {JSONPathCallback} callback
* @param {boolean} literalPriority
* @param {boolean} hasArrExpr
* @returns {ReturnObject|ReturnObject[]}
*/


JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, callback, literalPriority) {
JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, callback, hasArrExpr, literalPriority) {
// No expr to follow? return path and value as the result of
// this trace branch
var retObj;
Expand All @@ -602,7 +557,8 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
path: path,
value: val,
parent: parent,
parentProperty: parentPropName
parentProperty: parentPropName,
hasArrExpr: hasArrExpr
};

this._handleCallback(retObj, callback, 'value');
Expand Down Expand Up @@ -636,24 +592,24 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c

if ((typeof loc !== 'string' || literalPriority) && val && hasOwnProp.call(val, loc)) {
// simple case--directly follow property
addRet(this._trace(x, val[loc], push(path, loc), val, loc, callback));
addRet(this._trace(x, val[loc], push(path, loc), val, loc, callback, hasArrExpr));
} else if (loc === '*') {
// all child properties
this._walk(loc, x, val, path, parent, parentPropName, callback, function (m, l, _x, v, p, par, pr, cb) {
addRet(that._trace(unshift(m, _x), v, p, par, pr, cb, true));
addRet(that._trace(unshift(m, _x), v, p, par, pr, cb, true, true));
});
} else if (loc === '..') {
// all descendent parent properties
// Check remaining expression with val's immediate children
addRet(this._trace(x, val, path, parent, parentPropName, callback));
addRet(this._trace(x, val, path, parent, parentPropName, callback, hasArrExpr));

this._walk(loc, x, val, path, parent, parentPropName, callback, function (m, l, _x, v, p, par, pr, cb) {
// We don't join m and x here because we only want parents,
// not scalar values
if (_typeof(v[m]) === 'object') {
// Keep going with recursive descent on val's
// object children
addRet(that._trace(unshift(l, _x), v[m], push(p, m), v, m, cb));
addRet(that._trace(unshift(l, _x), v[m], push(p, m), v, m, cb, true));
}
}); // The parent sel computation is handled in the frame above using the
// ancestor object of val
Expand All @@ -680,19 +636,19 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
return retObj;
} else if (loc === '$') {
// root only
addRet(this._trace(x, val, path, null, null, callback));
addRet(this._trace(x, val, path, null, null, callback, hasArrExpr));
} else if (/^(\x2D?[0-9]*):(\x2D?[0-9]*):?([0-9]*)$/.test(loc)) {
// [start:end:step] Python slice syntax
addRet(this._slice(loc, x, val, path, parent, parentPropName, callback));
} else if (this.isFilterExpr(loc)) {
} else if (loc.indexOf('?(') === 0) {
// [?(expr)] (filtering)
if (this.currPreventEval) {
throw new Error('Eval [?(expr)] prevented in JSONPath expression.');
}

this._walk(loc, x, val, path, parent, parentPropName, callback, function (m, l, _x, v, p, par, pr, cb) {
if (that._eval(l.replace(/^\?\(((?:[\0-\t\x0B\f\x0E-\u2027\u202A-\uD7FF\uE000-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])*?)\)$/, '$1'), v[m], m, p, par, pr)) {
addRet(that._trace(unshift(m, _x), v, p, par, pr, cb));
addRet(that._trace(unshift(m, _x), v, p, par, pr, cb, true));
}
});
} else if (loc[0] === '(') {
Expand All @@ -704,7 +660,7 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
// parent of the property to which this expression will resolve


addRet(this._trace(unshift(this._eval(loc, val, path[path.length - 1], path.slice(0, -1), parent, parentPropName), x), val, path, parent, parentPropName, callback));
addRet(this._trace(unshift(this._eval(loc, val, path[path.length - 1], path.slice(0, -1), parent, parentPropName), x), val, path, parent, parentPropName, callback, hasArrExpr));
} else if (loc[0] === '@') {
// value type: @boolean(), etc.
var addType = false;
Expand Down Expand Up @@ -796,7 +752,7 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c

} else if (loc[0] === '`' && val && hasOwnProp.call(val, loc.slice(1))) {
var locProp = loc.slice(1);
addRet(this._trace(x, val[locProp], push(path, locProp), val, locProp, callback, true));
addRet(this._trace(x, val[locProp], push(path, locProp), val, locProp, callback, hasArrExpr, true));
} else if (loc.includes(',')) {
// [name1,name2,...]
var parts = loc.split(',');
Expand All @@ -807,7 +763,7 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
try {
for (var _iterator = parts[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
var part = _step.value;
addRet(this._trace(unshift(part, x), val, path, parent, parentPropName, callback));
addRet(this._trace(unshift(part, x), val, path, parent, parentPropName, callback, true));
} // simple case--directly follow property

} catch (err) {
Expand All @@ -825,7 +781,7 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
}
}
} else if (!literalPriority && val && hasOwnProp.call(val, loc)) {
addRet(this._trace(x, val[loc], push(path, loc), val, loc, callback, true));
addRet(this._trace(x, val[loc], push(path, loc), val, loc, callback, hasArrExpr, true));
} // We check the resulting values for parent selections. For parent
// selections we discard the value object and continue the trace with the
// current val object
Expand All @@ -836,7 +792,7 @@ JSONPath.prototype._trace = function (expr, val, path, parent, parentPropName, c
var rett = ret[t];

if (rett.isParentSelector) {
var tmp = that._trace(rett.expr, val, rett.path, parent, parentPropName, callback);
var tmp = that._trace(rett.expr, val, rett.path, parent, parentPropName, callback, hasArrExpr);

if (Array.isArray(tmp)) {
ret[t] = tmp[0];
Expand Down Expand Up @@ -887,7 +843,7 @@ JSONPath.prototype._slice = function (loc, expr, val, path, parent, parentPropNa
var ret = [];

for (var i = start; i < end; i += step) {
var tmp = this._trace(unshift(i, expr), val, path, parent, parentPropName, callback);
var tmp = this._trace(unshift(i, expr), val, path, parent, parentPropName, callback, true);

if (Array.isArray(tmp)) {
// This was causing excessive stack size in Node (with or
Expand Down
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