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import { URI } from 'vscode-uri';
import { Position, Range } from 'vscode-languageserver';
import { Node } from 'vscode-html-languageservice';
/** Normalizes a document URI */
export function normalizeUri(uri: string): string {
return URI.parse(uri).toString();
}
/** Turns a URL into a normalized FS Path */
export function urlToPath(stringUrl: string): string | null {
const url = URI.parse(stringUrl);
if (url.scheme !== 'file') {
return null;
}
return url.fsPath.replace(/\\/g, '/');
}
/** Converts a path to a URL */
export function pathToUrl(path: string) {
return URI.file(path).toString();
}
/**
*
* The language service is case insensitive, and would provide
* hover info for Svelte components like `Option` which have
* the same name like a html tag.
*/
export function isPossibleComponent(node: Node): boolean {
return !!node.tag?.[0].match(/[A-Z]/);
}
/**
*
* The language service is case insensitive, and would provide
* hover info for Svelte components like `Option` which have
* the same name like a html tag.
*/
export function isPossibleClientComponent(node: Node): boolean {
return isPossibleComponent(node) && (node.tag?.indexOf(':') ?? -1) > -1;
}
/** Flattens an array */
export function flatten<T>(arr: T[][]): T[] {
return arr.reduce((all, item) => [...all, ...item], []);
}
/** Clamps a number between min and max */
export function clamp(num: number, min: number, max: number): number {
return Math.max(min, Math.min(max, num));
}
export function isNotNullOrUndefined<T>(val: T | undefined | null): val is T {
return val !== undefined && val !== null;
}
/** Checks if a position is inside range */
export function isInRange(positionToTest: Position, range: Range): boolean {
return isBeforeOrEqualToPosition(range.end, positionToTest) && isBeforeOrEqualToPosition(positionToTest, range.start);
}
/** */
export function isBeforeOrEqualToPosition(position: Position, positionToTest: Position): boolean {
return positionToTest.line < position.line || (positionToTest.line === position.line && positionToTest.character <= position.character);
}
/**
* Debounces a function but cancels previous invocation only if
* a second function determines it should.
*
* @param fn The function with it's argument
* @param determineIfSame The function which determines if the previous invocation should be canceld or not
* @param miliseconds Number of miliseconds to debounce
*/
export function debounceSameArg<T>(fn: (arg: T) => void, shouldCancelPrevious: (newArg: T, prevArg?: T) => boolean, miliseconds: number): (arg: T) => void {
let timeout: any;
let prevArg: T | undefined;
return (arg: T) => {
if (shouldCancelPrevious(arg, prevArg)) {
clearTimeout(timeout);
}
prevArg = arg;
timeout = setTimeout(() => {
fn(arg);
prevArg = undefined;
}, miliseconds);
};
}
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