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Code Issues Packages 1 Wiki Activity

Change FileInfo to interface (#765)

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ztplz 2018-09-18 03:00:57 +08:00 • committed by Ryan Dahl
parent 850fca8fcb
commit 0260aaf8c2
1 changed files with 33 additions and 18 deletions
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51
js/stat.ts
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@ -8,10 +8,9 @@ import { assert } from "./util";
* A FileInfo describes a file and is returned by `stat`, `lstat`,
* `statSync`, `lstatSync`.
*/
// TODO FileInfo should be an interface not a class.
export class FileInfo {
private readonly _isFile: boolean;
private readonly _isSymlink: boolean;
export interface FileInfo {
readonly _isFile: boolean;
readonly _isSymlink: boolean;
/** The size of the file, in bytes. */
len: number;
/**
@ -38,13 +37,41 @@ export class FileInfo {
*/
mode: number | null;
/**
* Returns whether this is info for a regular file. This result is mutually
* exclusive to `FileInfo.isDirectory` and `FileInfo.isSymlink`.
*/
isFile(): boolean;
/**
* Returns whether this is info for a regular directory. This result is
* mutually exclusive to `FileInfo.isFile` and `FileInfo.isSymlink`.
*/
isDirectory(): boolean;
/**
* Returns whether this is info for a symlink. This result is
* mutually exclusive to `FileInfo.isFile` and `FileInfo.isDirectory`.
*/
isSymlink(): boolean;
}
class FileInfoImpl implements FileInfo {
readonly _isFile: boolean;
readonly _isSymlink: boolean;
len: number;
modified: number | null;
accessed: number | null;
created: number | null;
mode: number | null;
/* @internal */
constructor(private _msg: fbs.StatRes) {
const modified = this._msg.modified().toFloat64();
const accessed = this._msg.accessed().toFloat64();
const created = this._msg.created().toFloat64();
const mode = this._msg.mode(); // negative for invalid mode (Windows)
this._isFile = this._msg.isFile();
this._isSymlink = this._msg.isSymlink();
this.len = this._msg.len().toFloat64();
@ -55,26 +82,14 @@ export class FileInfo {
this.mode = mode >= 0 ? mode & 0o7777 : null;
}
/**
* Returns whether this is info for a regular file. This result is mutually
* exclusive to `FileInfo.isDirectory` and `FileInfo.isSymlink`.
*/
isFile() {
return this._isFile;
}
/**
* Returns whether this is info for a regular directory. This result is
* mutually exclusive to `FileInfo.isFile` and `FileInfo.isSymlink`.
*/
isDirectory() {
return !this._isFile && !this._isSymlink;
}
/**
* Returns whether this is info for a symlink. This result is
* mutually exclusive to `FileInfo.isFile` and `FileInfo.isDirectory`.
*/
isSymlink() {
return this._isSymlink;
}
@ -148,5 +163,5 @@ function res(baseRes: null | fbs.Base): FileInfo {
assert(fbs.Any.StatRes === baseRes!.msgType());
const res = new fbs.StatRes();
assert(baseRes!.msg(res) != null);
return new FileInfo(res);
return new FileInfoImpl(res);
}