lit-analyzer
Version:
CLI that type checks bindings in lit-html templates
62 lines (61 loc) • 1.99 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.grabWordInDirection = exports.getPositionContextInDocument = void 0;
/**
* Returns information about the position in a document.
* @param document
* @param offset
*/
function getPositionContextInDocument(document, offset) {
var text = document.virtualDocument.text;
var stopChar = /[/=<>\s"${}():]/;
var leftWord = grabWordInDirection({
direction: "left",
startOffset: offset,
stopChar: stopChar,
text: text
});
var rightWord = grabWordInDirection({
direction: "right",
startOffset: offset,
stopChar: stopChar,
text: text
});
var word = leftWord + rightWord;
var beforeWord = text[Math.max(0, offset - leftWord.length - 1)];
var afterWord = text[Math.min(text.length - 1, offset + rightWord.length)];
return {
offset: offset,
text: text,
word: word,
leftWord: leftWord,
rightWord: rightWord,
beforeWord: beforeWord,
afterWord: afterWord
};
}
exports.getPositionContextInDocument = getPositionContextInDocument;
/**
* Reads a word in a specific direction.
* Stops if "stopChar" is encountered.
* @param startPosition
* @param stopChar
* @param direction
* @param text
*/
function grabWordInDirection(_a) {
var startOffset = _a.startOffset, stopChar = _a.stopChar, direction = _a.direction, text = _a.text;
var dir = direction === "left" ? -1 : 1;
var curPosition = startOffset - (dir < 0 ? 1 : 0);
while (curPosition > 0 && curPosition < text.length) {
if (text[curPosition].match(stopChar))
break;
curPosition += dir;
if (curPosition > text.length || curPosition < 0)
return "";
}
var a = curPosition;
var b = startOffset;
return text.substring(Math.min(a, b) + (dir < 0 ? 1 : 0), Math.max(a, b));
}
exports.grabWordInDirection = grabWordInDirection;