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marihachi 2021-03-27 16:54:04 +09:00
parent ae2296d6e1
commit 4fe75b1341
2 changed files with 18 additions and 26 deletions
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2
src/parser.pegjs
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@ -386,7 +386,7 @@ fnArg
// inline: text
text
= . { return createNode('text', { text: text() }); }
= .
//
// General

40
src/util.ts
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@ -30,46 +30,38 @@ export function groupContinuous<T>(arr: T[], predicate: (prev: T, current: T) =>
return dest;
}
export function mergeGroupedTrees(groupedTrees: MfmNode[][]): MfmNode[] {
return groupedTrees.reduce((acc, val) => acc.concat(val), ([] as MfmNode[]));
}
export function mergeText(trees: MfmNode[] | undefined, recursive?: boolean): MfmNode[] | undefined {
let dest: MfmNode[];
let groupes: MfmNode[][];
if (trees == null) {
return trees;
export function mergeGroupedTrees<T>(groupedTrees: T[][]): T[] {
return groupedTrees.reduce((acc, val) => acc.concat(val), ([] as T[]));
}
export function mergeText(trees: (MfmNode | string)[]): MfmNode[] {
// group trees
groupes = groupContinuous(trees, (prev, current) => prev.type == current.type);
const groupes = groupContinuous(trees, (prev, current) => {
if (typeof prev == 'string' || typeof current == 'string') {
return (typeof prev == 'string' && typeof current == 'string');
}
else {
return (prev.type == current.type);
}
});
// concatinate text
groupes = groupes.map((group) => {
if (group[0].type == 'text') {
const concatGroupes = groupes.map((group) => {
if (typeof group[0] == 'string') {
return [
createNode('text', {
text: group.map(i => (i as MfmText).props.text).join('')
text: (group as string[]).join('')
})
];
}
return group;
return (group as MfmNode[]);
});
// merge groups
dest = mergeGroupedTrees(groupes);
const dest = mergeGroupedTrees(concatGroupes);
if (recursive) {
return dest.map(tree => {
// apply recursively to children
return createNode(tree.type, tree.props, recursive ? mergeText(tree.children) : tree.children);
});
}
else {
return dest;
}
}
export function stringifyNode(node: MfmNode): string {
switch(node.type) {