forked from Fediversity/Fediversity
54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
const ALIAS = Symbol.for('yaml.alias');
|
||
|
|
const DOC = Symbol.for('yaml.document');
|
||
|
|
const MAP = Symbol.for('yaml.map');
|
||
|
|
const PAIR = Symbol.for('yaml.pair');
|
||
|
|
const SCALAR = Symbol.for('yaml.scalar');
|
||
|
|
const SEQ = Symbol.for('yaml.seq');
|
||
|
|
const NODE_TYPE = Symbol.for('yaml.node.type');
|
||
|
|
const isAlias = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === ALIAS;
|
||
|
|
const isDocument = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === DOC;
|
||
|
|
const isMap = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === MAP;
|
||
|
|
const isPair = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === PAIR;
|
||
|
|
const isScalar = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === SCALAR;
|
||
|
|
const isSeq = (node) => !!node && typeof node === 'object' && node[NODE_TYPE] === SEQ;
|
||
|
|
function isCollection(node) {
|
||
|
|
if (node && typeof node === 'object')
|
||
|
|
switch (node[NODE_TYPE]) {
|
||
|
|
case MAP:
|
||
|
|
case SEQ:
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
function isNode(node) {
|
||
|
|
if (node && typeof node === 'object')
|
||
|
|
switch (node[NODE_TYPE]) {
|
||
|
|
case ALIAS:
|
||
|
|
case MAP:
|
||
|
|
case SCALAR:
|
||
|
|
case SEQ:
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
const hasAnchor = (node) => (isScalar(node) || isCollection(node)) && !!node.anchor;
|
||
|
|
|
||
|
|
exports.ALIAS = ALIAS;
|
||
|
|
exports.DOC = DOC;
|
||
|
|
exports.MAP = MAP;
|
||
|
|
exports.NODE_TYPE = NODE_TYPE;
|
||
|
|
exports.PAIR = PAIR;
|
||
|
|
exports.SCALAR = SCALAR;
|
||
|
|
exports.SEQ = SEQ;
|
||
|
|
exports.hasAnchor = hasAnchor;
|
||
|
|
exports.isAlias = isAlias;
|
||
|
|
exports.isCollection = isCollection;
|
||
|
|
exports.isDocument = isDocument;
|
||
|
|
exports.isMap = isMap;
|
||
|
|
exports.isNode = isNode;
|
||
|
|
exports.isPair = isPair;
|
||
|
|
exports.isScalar = isScalar;
|
||
|
|
exports.isSeq = isSeq;
|