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110 lines
4 KiB
JavaScript
110 lines
4 KiB
JavaScript
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/**
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* @fileoverview Tools for obtaining SourceCode objects.
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* @author Ian VanSchooten
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const { CLIEngine } = require("../cli-engine");
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/*
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* This is used for:
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*
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* 1. Enumerate target file because we have not expose such a API on `CLIEngine`
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* (https://github.com/eslint/eslint/issues/11222).
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* 2. Create `SourceCode` instances. Because we don't have any function which
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* instantiate `SourceCode` so it needs to take the created `SourceCode`
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* instance out after linting.
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*
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* TODO1: Expose the API that enumerates target files.
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* TODO2: Extract the creation logic of `SourceCode` from `Linter` class.
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*/
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const { getCLIEngineInternalSlots } = require("../cli-engine/cli-engine"); // eslint-disable-line node/no-restricted-require
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const debug = require("debug")("eslint:source-code-utils");
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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/**
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* Get the SourceCode object for a single file
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* @param {string} filename The fully resolved filename to get SourceCode from.
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* @param {Object} engine A CLIEngine.
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* @returns {Array} Array of the SourceCode object representing the file
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* and fatal error message.
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*/
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function getSourceCodeOfFile(filename, engine) {
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debug("getting sourceCode of", filename);
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const results = engine.executeOnFiles([filename]);
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if (results && results.results[0] && results.results[0].messages[0] && results.results[0].messages[0].fatal) {
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const msg = results.results[0].messages[0];
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throw new Error(`(${filename}:${msg.line}:${msg.column}) ${msg.message}`);
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}
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// TODO: extract the logic that creates source code objects to `SourceCode#parse(text, options)` or something like.
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const { linter } = getCLIEngineInternalSlots(engine);
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const sourceCode = linter.getSourceCode();
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return sourceCode;
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}
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//------------------------------------------------------------------------------
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// Public Interface
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//------------------------------------------------------------------------------
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/**
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* This callback is used to measure execution status in a progress bar
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* @callback progressCallback
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* @param {number} The total number of times the callback will be called.
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*/
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/**
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* Gets the SourceCode of a single file, or set of files.
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* @param {string[]|string} patterns A filename, directory name, or glob, or an array of them
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* @param {Object} options A CLIEngine options object. If not provided, the default cli options will be used.
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* @param {progressCallback} callback Callback for reporting execution status
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* @returns {Object} The SourceCode of all processed files.
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*/
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function getSourceCodeOfFiles(patterns, options, callback) {
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const sourceCodes = {};
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const globPatternsList = typeof patterns === "string" ? [patterns] : patterns;
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const engine = new CLIEngine({ ...options, rules: {} });
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// TODO: make file iteration as a public API and use it.
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const { fileEnumerator } = getCLIEngineInternalSlots(engine);
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const filenames =
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Array.from(fileEnumerator.iterateFiles(globPatternsList))
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.filter(entry => !entry.ignored)
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.map(entry => entry.filePath);
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if (filenames.length === 0) {
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debug(`Did not find any files matching pattern(s): ${globPatternsList}`);
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}
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filenames.forEach(filename => {
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const sourceCode = getSourceCodeOfFile(filename, engine);
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if (sourceCode) {
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debug("got sourceCode of", filename);
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sourceCodes[filename] = sourceCode;
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}
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if (callback) {
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callback(filenames.length); // eslint-disable-line node/callback-return
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}
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});
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return sourceCodes;
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}
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module.exports = {
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getSourceCodeOfFiles
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};
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