diff options
Diffstat (limited to 'tools/lint/eslint/eslint-plugin-spidermonkey-js')
5 files changed, 720 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-spidermonkey-js/LICENSE b/tools/lint/eslint/eslint-plugin-spidermonkey-js/LICENSE new file mode 100644 index 0000000000..e87a115e46 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-spidermonkey-js/LICENSE @@ -0,0 +1,363 @@ +Mozilla Public License, version 2.0 + +1. Definitions + +1.1. "Contributor" + + means each individual or legal entity that creates, contributes to the + creation of, or owns Covered Software. + +1.2. "Contributor Version" + + means the combination of the Contributions of others (if any) used by a + Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + + means Source Code Form to which the initial Contributor has attached the + notice in Exhibit A, the Executable Form of such Source Code Form, and + Modifications of such Source Code Form, in each case including portions + thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + a. that the initial Contributor has attached the notice described in + Exhibit B to the Covered Software; or + + b. that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the terms of + a Secondary License. + +1.6. "Executable Form" + + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + + means a work that combines Covered Software with other material, in a + separate file or files, that is not Covered Software. + +1.8. "License" + + means this document. + +1.9. "Licensable" + + means having the right to grant, to the maximum extent possible, whether + at the time of the initial grant or subsequently, any and all of the + rights conveyed by this License. + +1.10. "Modifications" + + means any of the following: + + a. any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered Software; or + + b. any new file in Source Code Form that contains any Covered Software. + +1.11. "Patent Claims" of a Contributor + + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the License, + by the making, using, selling, offering for sale, having made, import, + or transfer of either its Contributions or its Contributor Version. + +1.12. "Secondary License" + + means either the GNU General Public License, Version 2.0, the GNU Lesser + General Public License, Version 2.1, the GNU Affero General Public + License, Version 3.0, or any later versions of those licenses. + +1.13. "Source Code Form" + + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that controls, is + controlled by, or is under common control with You. For purposes of this + definition, "control" means (a) the power, direct or indirect, to cause + the direction or management of such entity, whether by contract or + otherwise, or (b) ownership of more than fifty percent (50%) of the + outstanding shares or beneficial ownership of such entity. + + +2. License Grants and Conditions + +2.1. Grants + + Each Contributor hereby grants You a world-wide, royalty-free, + non-exclusive license: + + a. under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + + b. under Patent Claims of such Contributor to make, use, sell, offer for + sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + + The licenses granted in Section 2.1 with respect to any Contribution + become effective for each Contribution on the date the Contributor first + distributes such Contribution. + +2.3. Limitations on Grant Scope + + The licenses granted in this Section 2 are the only rights granted under + this License. No additional rights or licenses will be implied from the + distribution or licensing of Covered Software under this License. + Notwithstanding Section 2.1(b) above, no patent license is granted by a + Contributor: + + a. for any code that a Contributor has removed from Covered Software; or + + b. for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + + c. under Patent Claims infringed by Covered Software in the absence of + its Contributions. + + This License does not grant any rights in the trademarks, service marks, + or logos of any Contributor (except as may be necessary to comply with + the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + + No Contributor makes additional grants as a result of Your choice to + distribute the Covered Software under a subsequent version of this + License (see Section 10.2) or under the terms of a Secondary License (if + permitted under the terms of Section 3.3). + +2.5. Representation + + Each Contributor represents that the Contributor believes its + Contributions are its original creation(s) or it has sufficient rights to + grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + + This License is not intended to limit any rights You have under + applicable copyright doctrines of fair use, fair dealing, or other + equivalents. + +2.7. Conditions + + Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in + Section 2.1. + + +3. Responsibilities + +3.1. Distribution of Source Form + + All distribution of Covered Software in Source Code Form, including any + Modifications that You create or to which You contribute, must be under + the terms of this License. You must inform recipients that the Source + Code Form of the Covered Software is governed by the terms of this + License, and how they can obtain a copy of this License. You may not + attempt to alter or restrict the recipients' rights in the Source Code + Form. + +3.2. Distribution of Executable Form + + If You distribute Covered Software in Executable Form then: + + a. such Covered Software must also be made available in Source Code Form, + as described in Section 3.1, and You must inform recipients of the + Executable Form how they can obtain a copy of such Source Code Form by + reasonable means in a timely manner, at a charge no more than the cost + of distribution to the recipient; and + + b. You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter the + recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + + You may create and distribute a Larger Work under terms of Your choice, + provided that You also comply with the requirements of this License for + the Covered Software. If the Larger Work is a combination of Covered + Software with a work governed by one or more Secondary Licenses, and the + Covered Software is not Incompatible With Secondary Licenses, this + License permits You to additionally distribute such Covered Software + under the terms of such Secondary License(s), so that the recipient of + the Larger Work may, at their option, further distribute the Covered + Software under the terms of either this License or such Secondary + License(s). + +3.4. Notices + + You may not remove or alter the substance of any license notices + (including copyright notices, patent notices, disclaimers of warranty, or + limitations of liability) contained within the Source Code Form of the + Covered Software, except that You may alter any license notices to the + extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + + You may choose to offer, and to charge a fee for, warranty, support, + indemnity or liability obligations to one or more recipients of Covered + Software. However, You may do so only on Your own behalf, and not on + behalf of any Contributor. You must make it absolutely clear that any + such warranty, support, indemnity, or liability obligation is offered by + You alone, and You hereby agree to indemnify every Contributor for any + liability incurred by such Contributor as a result of warranty, support, + indemnity or liability terms You offer. You may include additional + disclaimers of warranty and limitations of liability specific to any + jurisdiction. + +4. Inability to Comply Due to Statute or Regulation + + If it is impossible for You to comply with any of the terms of this License + with respect to some or all of the Covered Software due to statute, + judicial order, or regulation then You must: (a) comply with the terms of + this License to the maximum extent possible; and (b) describe the + limitations and the code they affect. Such description must be placed in a + text file included with all distributions of the Covered Software under + this License. Except to the extent prohibited by statute or regulation, + such description must be sufficiently detailed for a recipient of ordinary + skill to be able to understand it. + +5. Termination + +5.1. The rights granted under this License will terminate automatically if You + fail to comply with any of its terms. However, if You become compliant, + then the rights granted under this License from a particular Contributor + are reinstated (a) provisionally, unless and until such Contributor + explicitly and finally terminates Your grants, and (b) on an ongoing + basis, if such Contributor fails to notify You of the non-compliance by + some reasonable means prior to 60 days after You have come back into + compliance. Moreover, Your grants from a particular Contributor are + reinstated on an ongoing basis if such Contributor notifies You of the + non-compliance by some reasonable means, this is the first time You have + received notice of non-compliance with this License from such + Contributor, and You become compliant prior to 30 days after Your receipt + of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent + infringement claim (excluding declaratory judgment actions, + counter-claims, and cross-claims) alleging that a Contributor Version + directly or indirectly infringes any patent, then the rights granted to + You by any and all Contributors for the Covered Software under Section + 2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user + license agreements (excluding distributors and resellers) which have been + validly granted by You or Your distributors under this License prior to + termination shall survive termination. + +6. Disclaimer of Warranty + + Covered Software is provided under this License on an "as is" basis, + without warranty of any kind, either expressed, implied, or statutory, + including, without limitation, warranties that the Covered Software is free + of defects, merchantable, fit for a particular purpose or non-infringing. + The entire risk as to the quality and performance of the Covered Software + is with You. Should any Covered Software prove defective in any respect, + You (not any Contributor) assume the cost of any necessary servicing, + repair, or correction. This disclaimer of warranty constitutes an essential + part of this License. No use of any Covered Software is authorized under + this License except under this disclaimer. + +7. Limitation of Liability + + Under no circumstances and under no legal theory, whether tort (including + negligence), contract, or otherwise, shall any Contributor, or anyone who + distributes Covered Software as permitted above, be liable to You for any + direct, indirect, special, incidental, or consequential damages of any + character including, without limitation, damages for lost profits, loss of + goodwill, work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses, even if such party shall have been + informed of the possibility of such damages. This limitation of liability + shall not apply to liability for death or personal injury resulting from + such party's negligence to the extent applicable law prohibits such + limitation. Some jurisdictions do not allow the exclusion or limitation of + incidental or consequential damages, so this exclusion and limitation may + not apply to You. + +8. Litigation + + Any litigation relating to this License may be brought only in the courts + of a jurisdiction where the defendant maintains its principal place of + business and such litigation shall be governed by laws of that + jurisdiction, without reference to its conflict-of-law provisions. Nothing + in this Section shall prevent a party's ability to bring cross-claims or + counter-claims. + +9. Miscellaneous + + This License represents the complete agreement concerning the subject + matter hereof. If any provision of this License is held to be + unenforceable, such provision shall be reformed only to the extent + necessary to make it enforceable. Any law or regulation which provides that + the language of a contract shall be construed against the drafter shall not + be used to construe this License against a Contributor. + + +10. Versions of the License + +10.1. New Versions + + Mozilla Foundation is the license steward. Except as provided in Section + 10.3, no one other than the license steward has the right to modify or + publish new versions of this License. Each version will be given a + distinguishing version number. + +10.2. Effect of New Versions + + You may distribute the Covered Software under the terms of the version + of the License under which You originally received the Covered Software, + or under the terms of any subsequent version published by the license + steward. + +10.3. Modified Versions + + If you create software not governed by this License, and you want to + create a new license for such software, you may create and use a + modified version of this License if you rename the license and remove + any references to the name of the license steward (except to note that + such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary + Licenses If You choose to distribute Source Code Form that is + Incompatible With Secondary Licenses under the terms of this version of + the License, the notice described in Exhibit B of this License must be + attached. + +Exhibit A - Source Code Form License Notice + + This Source Code Form is subject to the + terms of the Mozilla Public License, v. + 2.0. If a copy of the MPL was not + distributed with this file, You can + obtain one at + http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular file, +then You may include the notice in a location (such as a LICENSE file in a +relevant directory) where a recipient would be likely to look for such a +notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice + + This Source Code Form is "Incompatible + With Secondary Licenses", as defined by + the Mozilla Public License, v. 2.0. + diff --git a/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/environments/self-hosted.js b/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/environments/self-hosted.js new file mode 100644 index 0000000000..37ae42bfa3 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/environments/self-hosted.js @@ -0,0 +1,180 @@ +/** + * @fileoverview Add environment defaults to SpiderMonkey's self-hosted JS. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +const path = require("path"); +const fs = require("fs"); + +let gRootDir = null; + +// Copied from `tools/lint/eslint/eslint-plugin-mozilla/lib/helpers.js`. +function getRootDir() { + if (!gRootDir) { + function searchUpForIgnore(dirName, filename) { + let parsed = path.parse(dirName); + while (parsed.root !== dirName) { + if (fs.existsSync(path.join(dirName, filename))) { + return dirName; + } + // Move up a level + dirName = parsed.dir; + parsed = path.parse(dirName); + } + return null; + } + + let possibleRoot = searchUpForIgnore( + path.dirname(module.filename), + ".eslintignore" + ); + if (!possibleRoot) { + possibleRoot = searchUpForIgnore(path.resolve(), ".eslintignore"); + } + if (!possibleRoot) { + possibleRoot = searchUpForIgnore(path.resolve(), "package.json"); + } + if (!possibleRoot) { + // We've couldn't find a root from the module or CWD, so lets just go + // for the CWD. We really don't want to throw if possible, as that + // tends to give confusing results when used with ESLint. + possibleRoot = process.cwd(); + } + + gRootDir = possibleRoot; + } + + return gRootDir; +} + +function tryReadFile(filePath) { + let absPath = path.join(getRootDir(), filePath); + if (!fs.existsSync(absPath)) { + // Safely handle the case when the file wasn't found, because throwing + // errors can lead to confusing result when used with ESLint. + return ""; + } + return fs.readFileSync(absPath, "utf-8"); +} + +// Search for top-level declarations, #defines, and #includes. +function addGlobalsFrom(dirName, fileName, globals) { + let filePath = path.join(dirName, fileName); + + // Definitions are separated by line. + let lines = tryReadFile(filePath).split("\n"); + + // We don't have to fully parse the source code, because it's formatted + // through "prettier", which means we know the exact code structure. + // + // |class| is disallowed in self-hosted code, so we don't have to handle it. + for (let line of lines) { + if ( + line.startsWith("function") || + line.startsWith("function*") || + line.startsWith("async function") || + line.startsWith("async function*") + ) { + let m = line.match(/^(?:async )?function(?:\*)?\s+([\w\$]+)\s*\(/); + if (m) { + globals[m[1]] = "readonly"; + } + } else if ( + line.startsWith("var") || + line.startsWith("let") || + line.startsWith("const") + ) { + let m = line.match(/^(?:var|let|const)\s+([\w\$]+)\s*[;=]/); + if (m) { + globals[m[1]] = "readonly"; + } + } else if (line.startsWith("#define")) { + let m = line.match(/^#define (\w+)/); + if (m) { + globals[m[1]] = "readonly"; + } + } else if (line.startsWith("#include")) { + let m = line.match(/^#include \"([\w\.]+)\"$/); + if (m) { + // Also process definitions from includes. + addGlobalsFrom(dirName, m[1], globals); + } + } + } +} + +function selfHostingDefines(dirName = "js/src/builtin/") { + let absDir = path.join(getRootDir(), dirName); + if (!fs.existsSync(absDir)) { + // See |tryReadFile| for why we avoid to throw any errors. + return {}; + } + + // Search sub-directories and js-files within |dirName|. + let dirs = []; + let jsFiles = []; + for (let name of fs.readdirSync(absDir)) { + let stat = fs.statSync(path.join(absDir, name)); + if (stat.isDirectory()) { + dirs.push(name); + } else if (stat.isFile() && name.endsWith(".js")) { + jsFiles.push(name); + } + } + + let globals = Object.create(null); + + // Process each js-file. + for (let jsFile of jsFiles) { + addGlobalsFrom(dirName, jsFile, globals); + } + + // Recursively traverse all sub-directories. + for (let dir of dirs) { + globals = { ...globals, ...selfHostingDefines(path.join(dirName, dir)) }; + } + + return globals; +} + +function selfHostingFunctions() { + // Definitions can be spread across multiple lines and may have extra + // whitespace, so we simply remove all whitespace and match over the complete + // file. + let content = tryReadFile("js/src/vm/SelfHosting.cpp").replace(/\s+/g, ""); + + let globals = Object.create(null); + for (let m of content.matchAll(/(?:JS_FN|JS_INLINABLE_FN)\("(\w+)"/g)) { + globals[m[1]] = "readonly"; + } + return globals; +} + +function errorNumbers() { + // Definitions are separated by line. + let lines = tryReadFile("js/public/friend/ErrorNumbers.msg").split("\n"); + + let globals = Object.create(null); + for (let line of lines) { + let m = line.match(/^MSG_DEF\((\w+),/); + if (m) { + globals[m[1]] = "readonly"; + } + } + return globals; +} + +const globals = { + ...selfHostingDefines(), + ...selfHostingFunctions(), + ...errorNumbers(), +}; + +module.exports = { + globals, +}; diff --git a/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/index.js b/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/index.js new file mode 100644 index 0000000000..d9d40af8c6 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/index.js @@ -0,0 +1,20 @@ +/** + * @fileoverview A processor to help parse the spidermonkey js code. + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +// ------------------------------------------------------------------------------ +// Plugin Definition +// ------------------------------------------------------------------------------ +module.exports = { + processors: { + processor: require("../lib/processors/self-hosted"), + }, + environments: { + environment: require("../lib/environments/self-hosted"), + }, +}; diff --git a/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/processors/self-hosted.js b/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/processors/self-hosted.js new file mode 100644 index 0000000000..02201a329b --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-spidermonkey-js/lib/processors/self-hosted.js @@ -0,0 +1,129 @@ +/** + * @fileoverview Remove macros from SpiderMonkey's self-hosted JS. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +"use strict"; + +const path = require("path"); +const fs = require("fs"); + +const selfHostedRegex = /js\/src\/builtin\/.*?\.js$/; +const macroRegex = + /\s*\#(if|ifdef|else|elif|endif|include|define|undef|error).*/; + +function isSelfHostedFile(filename) { + if (path.win32) { + filename = filename.split(path.sep).join("/"); + } + return selfHostedRegex.test(filename); +} + +function tryReadFile(filePath) { + if (!path.isAbsolute(filePath)) { + return ""; + } + if (!fs.existsSync(filePath)) { + // Safely handle the case when the file wasn't found, because throwing + // errors can lead to confusing result when used with ESLint. + return ""; + } + return fs.readFileSync(filePath, "utf-8"); +} + +// Adjust the range of fixes to match the original source code. +function createFix(lines, message) { + let { line, column, fix } = message; + + // Line and column are 1-based. Make sure we got a valid input. + if (line <= 0 || column <= 0) { + return null; + } + + // Reject to create a fix when the line is out of range for some reason. + if (line > lines.length) { + return null; + } + + // Find the absolute start position of the line in the original file. + let startOfLine = 0; + for (let i = 0; i < line - 1; ++i) { + // Add the length of the line, including its line separator. + startOfLine += lines[i].length + "\n".length; + } + + // Add the 1-based column to the start of line to get the start position. + let start = startOfLine + (column - 1); + + // Add the fix range to get the end position. + let end = start + (fix.range[1] - fix.range[0]); + + // And finally return the new fix object. + return { text: fix.text, range: [start, end] }; +} + +module.exports = { + preprocess(text, filename) { + if (!isSelfHostedFile(filename)) { + return [text]; + } + + let lines = text.split(/\n/); + for (let i = 0; i < lines.length; i++) { + if (!macroRegex.test(lines[i])) { + // No macro here, nothing to do. + continue; + } + + for (; i < lines.length; i++) { + // The macro isn't correctly indented, so we need to instruct + // prettier to ignore them. + lines[i] = "// prettier-ignore -- " + lines[i]; + + // If the line ends with a backslash (\), the next line + // is also part of part of the macro. + if (!lines[i].endsWith("\\")) { + break; + } + } + } + + return [lines.join("\n")]; + }, + + postprocess(messages, filename) { + // Don't attempt to create fixes for any non-selfhosted files. + if (!isSelfHostedFile(filename)) { + return [].concat(...messages); + } + + let lines = null; + + let result = []; + for (let message of messages.flat()) { + if (message.fix) { + if (lines === null) { + lines = tryReadFile(filename).split(/\n/); + } + + let fix = createFix(lines, message); + if (fix) { + message.fix = fix; + } else { + // We couldn't create a fix, so we better remove the passed in fix, + // because its range points to the preprocessor output, but the post- + // processor must translate it into a range of the original source. + delete message.fix; + } + } + + result.push(message); + } + return result; + }, + + supportsAutofix: true, +}; diff --git a/tools/lint/eslint/eslint-plugin-spidermonkey-js/package.json b/tools/lint/eslint/eslint-plugin-spidermonkey-js/package.json new file mode 100644 index 0000000000..7d96b5b1c4 --- /dev/null +++ b/tools/lint/eslint/eslint-plugin-spidermonkey-js/package.json @@ -0,0 +1,28 @@ +{ + "name": "eslint-plugin-spidermonkey-js", + "version": "0.1.1", + "description": "A collection of rules that help enforce JavaScript coding standard in the Mozilla SpiderMonkey project.", + "keywords": [ + "eslint", + "eslintplugin", + "eslint-plugin", + "mozilla", + "spidermonkey" + ], + "bugs": { + "url": "https://bugzilla.mozilla.org/enter_bug.cgi?product=Testing&component=Lint" + }, + "homepage": "http://firefox-source-docs.mozilla.org/tools/lint/linters/eslint-plugin-spidermonkey-js.html", + "repository": { + "type": "hg", + "url": "https://hg.mozilla.org/mozilla-central/" + }, + "author": "Mozilla", + "main": "lib/index.js", + "dependencies": {}, + "devDependencies": {}, + "engines": { + "node": ">=6.9.1" + }, + "license": "MPL-2.0" +} |