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add comments to clarify code

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This commit is contained in:
meganrogge
2020-11-06 11:38:02 -08:00
parent 83f000df03
commit fc07b2f170
1 changed files with 16 additions and 16 deletions
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32
extensions/markdown-language-features/src/features/smartSelect.ts
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@@ -72,26 +72,26 @@ function getHeadersForPosition(toc: TocEntry[], position: vscode.Position): { he
};
}
function createHeaderRange(header: TocEntry, isClosestHeaderToPosition: boolean, onHeaderLine: boolean, parent?: vscode.SelectionRange, childStart?: vscode.Position): vscode.SelectionRange | undefined {
const contentRange = new vscode.Range(header.location.range.start.translate(1), header.location.range.end);
const headerPlusContentRange = header.location.range;
const partialContentRange = childStart && isClosestHeaderToPosition ? contentRange.with(undefined, childStart) : undefined;
if (onHeaderLine && isClosestHeaderToPosition && childStart) {
return new vscode.SelectionRange(header.location.range.with(undefined, childStart), new vscode.SelectionRange(header.location.range, parent));
function createHeaderRange(header: TocEntry, isClosestHeaderToPosition: boolean, onHeaderLine: boolean, parent?: vscode.SelectionRange, startOfChildRange?: vscode.Position): vscode.SelectionRange | undefined {
const range = header.location.range;
const contentRange = new vscode.Range(range.start.translate(1), range.end);
if (onHeaderLine && isClosestHeaderToPosition && startOfChildRange) {
// selection was made on this header line, so select header and its content until the start of its first child
// then all of its content
return new vscode.SelectionRange(range.with(undefined, startOfChildRange), new vscode.SelectionRange(range, parent));
} else if (onHeaderLine && isClosestHeaderToPosition) {
return new vscode.SelectionRange(header.location.range, parent);
} else if (parent && parent.range.contains(headerPlusContentRange)) {
if (partialContentRange) {
return new vscode.SelectionRange(partialContentRange, new vscode.SelectionRange(contentRange, (new vscode.SelectionRange(headerPlusContentRange, parent))));
} else {
return new vscode.SelectionRange(contentRange, new vscode.SelectionRange(headerPlusContentRange, parent));
}
} else if (partialContentRange) {
return new vscode.SelectionRange(partialContentRange, new vscode.SelectionRange(contentRange, (new vscode.SelectionRange(headerPlusContentRange))));
// selection was made on this header line and no children so expand to all of its content
return new vscode.SelectionRange(range, parent);
} else if (isClosestHeaderToPosition && startOfChildRange) {
// selection was made within content and has child so select content
// of this header then all content then header
return new vscode.SelectionRange(contentRange.with(undefined, startOfChildRange), new vscode.SelectionRange(contentRange, (new vscode.SelectionRange(range, parent))));
} else {
return new vscode.SelectionRange(contentRange, new vscode.SelectionRange(headerPlusContentRange));
// no children and not on this header line so select content then header
return new vscode.SelectionRange(contentRange, new vscode.SelectionRange(range, parent));
}
}
function getTokensForPosition(tokens: Token[], position: vscode.Position): Token[] {
const enclosingTokens = tokens.filter(token => token.map && (token.map[0] <= position.line && token.map[1] > position.line) && isBlockElement(token));
if (enclosingTokens.length === 0) {