100 lines
2.9 KiB
TypeScript
100 lines
2.9 KiB
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {FormatConfig} from '../config';
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// A callback to determine if the formatter run found a failure in formatting.
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export type CallbackFunc = (file: string, code: number, stdout: string, stderr: string) => boolean;
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// The actions a formatter can take.
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export type FormatterAction = 'check'|'format';
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// The metadata needed for running one of the `FormatterAction`s on a file.
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interface FormatterActionMetadata {
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commandFlags: string;
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callback: CallbackFunc;
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}
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/**
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* The base class for formatters to run against provided files.
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*/
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export abstract class Formatter {
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/**
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* The name of the formatter, this is used for identification in logging and for enabling and
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* configuring the formatter in the config.
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*/
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abstract name: string;
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/** The full path file location of the formatter binary. */
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abstract binaryFilePath: string;
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/** Metadata for each `FormatterAction` available to the formatter. */
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abstract actions: {
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// An action performing a check of format without making any changes.
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check: FormatterActionMetadata;
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// An action to format files in place.
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format: FormatterActionMetadata;
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};
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/** The default matchers for the formatter for filtering files to be formatted. */
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abstract defaultFileMatcher: string[];
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constructor(private config: FormatConfig) {}
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/**
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* Retrieve the command to execute the provided action, including both the binary
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* and command line flags.
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*/
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commandFor(action: FormatterAction) {
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switch (action) {
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case 'check':
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return `${this.binaryFilePath} ${this.actions.check.commandFlags}`;
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case 'format':
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return `${this.binaryFilePath} ${this.actions.format.commandFlags}`;
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default:
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throw Error('Unknown action type');
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}
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}
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/**
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* Retrieve the callback for the provided action to determine if an action
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* failed in formatting.
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*/
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callbackFor(action: FormatterAction) {
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switch (action) {
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case 'check':
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return this.actions.check.callback;
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case 'format':
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return this.actions.format.callback;
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default:
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throw Error('Unknown action type');
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}
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}
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/** Whether the formatter is enabled in the provided config. */
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isEnabled() {
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return !!this.config[this.name];
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}
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/** Retrieve the active file matcher for the formatter. */
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getFileMatcher() {
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return this.getFileMatcherFromConfig() || this.defaultFileMatcher;
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}
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/**
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* Retrieves the file matcher from the config provided to the constructor if provided.
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*/
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private getFileMatcherFromConfig(): string[]|undefined {
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const formatterConfig = this.config[this.name];
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if (typeof formatterConfig === 'boolean') {
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return undefined;
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}
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return formatterConfig.matchers;
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}
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}
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