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resolve.ts
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resolve.ts
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import { isDiffObject } from './symbols';
import { getTypeFromRegistry } from './registry';
import {
Addition,
ComparableEntry,
ProsemirrorContentNode,
Removal,
ResolverContext,
Resolvable,
UnresolvedProsemirrorTextNode,
ResolveResult,
ProsemirrorDoc,
ProsemirrorTextNode,
ResolveAdditions,
ResolveRemovals,
Registry,
} from './types';
const resolveArray = <T extends Resolvable>(
array: ComparableEntry<Resolvable>[],
context: ResolverContext,
getResolvedIndex = resolved => resolved.length
) => {
const { resolve } = context;
const childAdditionsMap: Map<number, ResolveAdditions> = new Map();
const childRemovalsMap: Map<number, ResolveRemovals> = new Map();
const additionsMap: Map<number, T> = new Map();
const removalsMap: Map<'end' | number, T[]> = new Map();
let accumulatedRemovals: T[] = [];
const resolvedElements = [];
for (let element of array) {
const resolvedIndex = getResolvedIndex(resolvedElements);
let resolvedElement = null;
if (element[isDiffObject]) {
if ((element as Removal<T>).remove) {
accumulatedRemovals.push((element as Removal<T>).remove);
}
if ((element as Addition<T>).add) {
resolvedElement = (element as Addition<T>).add;
additionsMap.set(resolvedIndex, resolvedElement);
}
} else {
if (typeof element === 'string') {
resolvedElement = element;
} else {
const resolveResult = resolve(element);
resolvedElement = resolveResult.element;
if (resolveResult.removals) {
childRemovalsMap.set(resolvedIndex, resolveResult.removals);
}
if (resolveResult.additions) {
childAdditionsMap.set(
resolvedIndex,
resolveResult.additions
);
}
}
}
if (resolvedElement) {
removalsMap.set(resolvedIndex, accumulatedRemovals);
accumulatedRemovals = [];
resolvedElements.push(resolvedElement);
}
}
if (accumulatedRemovals.length) {
removalsMap.set('end', accumulatedRemovals);
}
return {
resolvedElements,
additions: {
map: additionsMap,
children: childAdditionsMap,
},
removals: {
map: removalsMap,
children: childRemovalsMap,
},
};
};
export const resolveText = (
textNode: UnresolvedProsemirrorTextNode,
context: ResolverContext
): ResolveResult<ProsemirrorTextNode> => {
const { additions, removals, resolvedElements } = resolveArray<string>(
textNode.text,
context,
elements => elements.map(x => x.length).reduce((a, b) => a + b, 0)
);
return {
element: {
...textNode,
text: resolvedElements.join(''),
},
additions: {
text: additions,
},
removals: {
text: removals,
},
};
};
export const resolveElementWithContent = (
element: ProsemirrorContentNode,
context: ResolverContext
): ResolveResult<ProsemirrorContentNode> => {
const { additions, removals, resolvedElements } = resolveArray<
ProsemirrorContentNode
>(element.content || [], context);
return {
element: {
...element,
// If element.content was null, don't pass in [] for resolvedElements
content: element.content && resolvedElements,
},
removals: {
content: removals,
},
additions: {
content: additions,
},
};
};
export const resolve = (diffResult: ProsemirrorDoc, registry: Registry) => {
const resolve = element => {
return getTypeFromRegistry(registry, element.type).render.resolve(
element,
{ resolve }
);
};
const result = resolve(diffResult);
return {
doc: result.element as ProsemirrorDoc,
additions: result.additions,
removals: result.removals,
};
};