fontoxpath/src/selectors/dataTypes/createAtomicValue.js

A minimalistic XPath 3.1 engine in JavaScript

import builtinDataTypesByName from './builtins/builtinDataTypesByName';

/**
* @param    {*}  value
* @param    {./ETypeNames}  type
* @returns  {?./AtomicValue<*>}
*/
export default function createAtomicValue (value, type) {
	if (!builtinDataTypesByName[type]) {
		return null;
	}

	// if (type === 'xs:boolean' || type === 'xs:string' || type === 'xs:untypedAtomic' || type === 'xs:integer') {
	// 	let cache = valueCacheByValueByType[type];

	// 	if (!cache) {
	// 		cache = valueCacheByValueByType[type] = Object.create(null);
	// 	}
	// 	let existingValue = cache[value];
	// 	if (!existingValue) {
	// 		existingValue = { type: type, value: value };
	// 	}
	// 	return existingValue;
	// }
	return {
		type: type,
		value: value
	};
}

export const trueBoolean = createAtomicValue(true, 'xs:boolean');
export const falseBoolean = createAtomicValue(false, 'xs:boolean');