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This commit is contained in:
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 // inline: text
text text
= . { return createNode('text', { text: text() }); } = .
// //
// General // 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; return dest;
} }
export function mergeGroupedTrees(groupedTrees: MfmNode[][]): MfmNode[] { export function mergeGroupedTrees<T>(groupedTrees: T[][]): T[] {
return groupedTrees.reduce((acc, val) => acc.concat(val), ([] as MfmNode[])); return groupedTrees.reduce((acc, val) => acc.concat(val), ([] as T[]));
}
export function mergeText(trees: MfmNode[] | undefined, recursive?: boolean): MfmNode[] | undefined {
let dest: MfmNode[];
let groupes: MfmNode[][];
if (trees == null) {
return trees;
} }
export function mergeText(trees: (MfmNode | string)[]): MfmNode[] {
// group trees // 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 // concatinate text
groupes = groupes.map((group) => { const concatGroupes = groupes.map((group) => {
if (group[0].type == 'text') { if (typeof group[0] == 'string') {
return [ return [
createNode('text', { 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 // 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; return dest;
} }
}
export function stringifyNode(node: MfmNode): string { export function stringifyNode(node: MfmNode): string {
switch(node.type) { switch(node.type) {