46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
/* Core of picomath: generates an instance */
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import poortf from './poortf.js'
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export default function picomathInstance (instName, config) {
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/* Since we have to do it all the time, when we call a picomath instance
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* as a function, it takes a name and 0 or more implementations add adds
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* them to its poortf property named name, returning that property value.
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*/
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function fn (name, imps, author, data) {
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if (name in fn) {
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fn[name].addImps(imps, author, data)
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} else {
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fn[name] = poortf(name, imps, author, data)
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}
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/* For PoC, just assume only reason to provide author info
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* is to be invalidated when config changes
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*/
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if (author) {
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if (!fn.configUsers.has(author)) {
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fn.configUsers.set(author, new Set())
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}
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fn.configUsers.get(author).add(name)
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}
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return fn[name]
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}
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Object.defineProperty(fn, 'name', {value: instName})
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// There is an issue below of possible collision between the following
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// property names and operation names. Since it would not be too hard to
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// solve, we won't worry about it in this PoC.
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fn.config = config || { resolveComplex: false } // primitive default for POC
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fn.configUsers = new Map()
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fn.reconfigure = config => {
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for (const [author, names] of fn.configUsers.entries()) {
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for (const name of names) {
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fn[name].invalidate(author)
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}
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}
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fn.config = config
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}
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return fn
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}
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