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factor documentlink extraction into separate function

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This commit is contained in:
Phil Marshall
2019-01-24 17:25:09 -06:00
parent b1de159292
commit 5fdc5c2675
1 changed files with 26 additions and 26 deletions
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52
extensions/markdown-language-features/src/features/documentLinkProvider.ts
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@@ -50,6 +50,25 @@ function matchAll(
return out;
}
function extractDocumentLink(
document: vscode.TextDocument,
base: string,
pre: number,
link: string,
matchIndex: number | undefined
): vscode.DocumentLink | undefined {
const offset = (matchIndex || 0) + pre;
const linkStart = document.positionAt(offset);
const linkEnd = document.positionAt(offset + link.length);
try {
return new vscode.DocumentLink(
new vscode.Range(linkStart, linkEnd),
normalizeLink(document, link, base));
} catch (e) {
return undefined;
}
}
export default class LinkProvider implements vscode.DocumentLinkProvider {
private readonly linkPattern = /(\[((!\[(.+)\]\()(.+)\)\]|[^\]]*\])\(\s*)((([^\s\(\)]|\(\S*?\))+))\s*(".*?")?\)/g;
private readonly referenceLinkPattern = /(\[([^\]]+)\]\[\s*?)([^\s\]]*?)\]/g;
@@ -73,34 +92,15 @@ export default class LinkProvider implements vscode.DocumentLinkProvider {
): vscode.DocumentLink[] {
const results: vscode.DocumentLink[] = [];
for (const match of matchAll(this.linkPattern, text)) {
const pre = match[1];
const link = match[6];
const offset = (match.index || 0) + pre.length;
const linkStart = document.positionAt(offset);
const linkEnd = document.positionAt(offset + link.length);
try {
results.push(new vscode.DocumentLink(
new vscode.Range(linkStart, linkEnd),
normalizeLink(document, link, base)));
} catch (e) {
// noop
const urlLink = extractDocumentLink(document, base, match[1].length, match[6], match.index);
if (urlLink) {
results.push(urlLink);
}
if (match[5]) {
const imagePre = match[3];
const imageLink = match[5];
const imageOffset = (match.index || 0) + imagePre.length + 1;
const imageLinkStart = document.positionAt(imageOffset);
const imageLinkEnd = document.positionAt(imageOffset + imageLink.length);
try {
results.push(new vscode.DocumentLink(
new vscode.Range(imageLinkStart, imageLinkEnd),
normalizeLink(document, imageLink, base)));
} catch (e) {
// noop
}
const imgLink = match[5] && extractDocumentLink(document, base, match[3].length + 1, match[5], match.index);
if (imgLink) {
results.push(imgLink);
}
}
return results;
}
@@ -173,4 +173,4 @@ export default class LinkProvider implements vscode.DocumentLinkProvider {
}
return out;
}
}
}