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prep for https://github.com/microsoft/vscode/issues/91427

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This commit is contained in:
Johannes Rieken
2020-03-04 12:32:10 +01:00
parent 3c2423086c
commit 79ecb2a249
1 changed files with 67 additions and 69 deletions
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src/vs/workbench/contrib/snippets/browser/snippetCompletionProvider.ts
+67 -69
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@@ -66,92 +66,90 @@ export class SnippetCompletionProvider implements CompletionItemProvider {
//
}
provideCompletionItems(model: ITextModel, position: Position, context: CompletionContext): Promise<CompletionList> | undefined {
async provideCompletionItems(model: ITextModel, position: Position, context: CompletionContext): Promise<CompletionList> {
if (position.column >= SnippetCompletionProvider._maxPrefix) {
return undefined;
return { suggestions: [] };
}
if (context.triggerKind === CompletionTriggerKind.TriggerCharacter && context.triggerCharacter === ' ') {
// no snippets when suggestions have been triggered by space
return undefined;
return { suggestions: [] };
}
const languageId = this._getLanguageIdAtPosition(model, position);
return this._snippets.getSnippets(languageId).then(snippets => {
const snippets = await this._snippets.getSnippets(languageId);
let suggestions: SnippetCompletion[];
let pos = { lineNumber: position.lineNumber, column: 1 };
let lineOffsets: number[] = [];
const lineContent = model.getLineContent(position.lineNumber);
const linePrefixLow = lineContent.substr(0, position.column - 1).toLowerCase();
let endsInWhitespace = linePrefixLow.match(/\s$/);
let pos = { lineNumber: position.lineNumber, column: 1 };
let lineOffsets: number[] = [];
const lineContent = model.getLineContent(position.lineNumber);
const linePrefixLow = lineContent.substr(0, position.column - 1).toLowerCase();
const endsInWhitespace = linePrefixLow.match(/\s$/);
while (pos.column < position.column) {
let word = model.getWordAtPosition(pos);
if (word) {
// at a word
lineOffsets.push(word.startColumn - 1);
pos.column = word.endColumn + 1;
if (word.endColumn - 1 < linePrefixLow.length && !/\s/.test(linePrefixLow[word.endColumn - 1])) {
lineOffsets.push(word.endColumn - 1);
}
}
else if (!/\s/.test(linePrefixLow[pos.column - 1])) {
// at a none-whitespace character
lineOffsets.push(pos.column - 1);
pos.column += 1;
}
else {
// always advance!
pos.column += 1;
while (pos.column < position.column) {
let word = model.getWordAtPosition(pos);
if (word) {
// at a word
lineOffsets.push(word.startColumn - 1);
pos.column = word.endColumn + 1;
if (word.endColumn < position.column && !/\s/.test(linePrefixLow[word.endColumn - 1])) {
lineOffsets.push(word.endColumn - 1);
}
}
const lineSuffixLow = lineContent.substr(position.column - 1).toLowerCase();
let availableSnippets = new Set<Snippet>();
snippets.forEach(availableSnippets.add, availableSnippets);
suggestions = [];
for (let start of lineOffsets) {
availableSnippets.forEach(snippet => {
if (isPatternInWord(linePrefixLow, start, linePrefixLow.length, snippet.prefixLow, 0, snippet.prefixLow.length)) {
const snippetPrefixSubstr = snippet.prefixLow.substr(linePrefixLow.length - start);
const endColumn = startsWith(lineSuffixLow, snippetPrefixSubstr) ? position.column + snippetPrefixSubstr.length : position.column;
const replace = Range.fromPositions(position.delta(0, -(linePrefixLow.length - start)), { lineNumber: position.lineNumber, column: endColumn });
const insert = replace.setEndPosition(position.lineNumber, position.column);
suggestions.push(new SnippetCompletion(snippet, { replace, insert }));
availableSnippets.delete(snippet);
}
});
else if (!/\s/.test(linePrefixLow[pos.column - 1])) {
// at a none-whitespace character
lineOffsets.push(pos.column - 1);
pos.column += 1;
}
if (endsInWhitespace || lineOffsets.length === 0) {
// add remaing snippets when the current prefix ends in whitespace or when no
// interesting positions have been found
availableSnippets.forEach(snippet => {
let insert = Range.fromPositions(position);
let replace = startsWith(lineSuffixLow, snippet.prefixLow) ? insert.setEndPosition(position.lineNumber, position.column + snippet.prefixLow.length) : insert;
else {
// always advance!
pos.column += 1;
}
}
const lineSuffixLow = lineContent.substr(position.column - 1).toLowerCase();
const availableSnippets = new Set<Snippet>(snippets);
const suggestions: SnippetCompletion[] = [];
for (let start of lineOffsets) {
availableSnippets.forEach(snippet => {
if (isPatternInWord(linePrefixLow, start, linePrefixLow.length, snippet.prefixLow, 0, snippet.prefixLow.length)) {
const snippetPrefixSubstr = snippet.prefixLow.substr(linePrefixLow.length - start);
const endColumn = startsWith(lineSuffixLow, snippetPrefixSubstr) ? position.column + snippetPrefixSubstr.length : position.column;
const replace = Range.fromPositions(position.delta(0, -(linePrefixLow.length - start)), { lineNumber: position.lineNumber, column: endColumn });
const insert = replace.setEndPosition(position.lineNumber, position.column);
suggestions.push(new SnippetCompletion(snippet, { replace, insert }));
});
}
// dismbiguate suggestions with same labels
suggestions.sort(SnippetCompletion.compareByLabel);
for (let i = 0; i < suggestions.length; i++) {
let item = suggestions[i];
let to = i + 1;
for (; to < suggestions.length && item.label === suggestions[to].label; to++) {
suggestions[to].label.name = localize('snippetSuggest.longLabel', "{0}, {1}", suggestions[to].label.name, suggestions[to].snippet.name);
availableSnippets.delete(snippet);
}
if (to > i + 1) {
suggestions[i].label.name = localize('snippetSuggest.longLabel', "{0}, {1}", suggestions[i].label.name, suggestions[i].snippet.name);
i = to;
}
}
});
}
if (endsInWhitespace || lineOffsets.length === 0) {
// add remaing snippets when the current prefix ends in whitespace or when no
// interesting positions have been found
availableSnippets.forEach(snippet => {
let insert = Range.fromPositions(position);
let replace = startsWith(lineSuffixLow, snippet.prefixLow) ? insert.setEndPosition(position.lineNumber, position.column + snippet.prefixLow.length) : insert;
suggestions.push(new SnippetCompletion(snippet, { replace, insert }));
});
}
return { suggestions };
});
// dismbiguate suggestions with same labels
suggestions.sort(SnippetCompletion.compareByLabel);
for (let i = 0; i < suggestions.length; i++) {
let item = suggestions[i];
let to = i + 1;
for (; to < suggestions.length && item.label === suggestions[to].label; to++) {
suggestions[to].label.name = localize('snippetSuggest.longLabel', "{0}, {1}", suggestions[to].label.name, suggestions[to].snippet.name);
}
if (to > i + 1) {
suggestions[i].label.name = localize('snippetSuggest.longLabel', "{0}, {1}", suggestions[i].label.name, suggestions[i].snippet.name);
i = to;
}
}
return { suggestions };
}
resolveCompletionItem(_model: ITextModel, _position: Position, item: CompletionItem): CompletionItem {