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"use strict";
/**
* @license
* Copyright 2013 Palantir Technologies, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var tsutils_1 = require("tsutils");
var ts = require("typescript");
var Lint = require("../index");
var defaultOptions = fillOptions("ignore");
function fillOptions(value) {
return {
arrays: value,
exports: value,
functions: value,
imports: value,
objects: value,
typeLiterals: value,
};
}
function normalizeOptions(options) {
return { multiline: normalize(options.multiline), singleline: normalize(options.singleline) };
function normalize(value) {
return typeof value === "string" ? fillOptions(value) : tslib_1.__assign({}, defaultOptions, value);
}
}
/* tslint:disable:object-literal-sort-keys */
var metadataOptionShape = {
anyOf: [
{
type: "string",
enum: ["always", "never"],
},
{
type: "object",
properties: fillOptions({
type: "string",
enum: ["always", "never", "ignore"],
}),
},
],
};
/* tslint:enable:object-literal-sort-keys */
var Rule = (function (_super) {
tslib_1.__extends(Rule, _super);
function Rule() {
return _super !== null && _super.apply(this, arguments) || this;
}
Rule.prototype.apply = function (sourceFile) {
var options = normalizeOptions(this.ruleArguments[0]);
return this.applyWithWalker(new TrailingCommaWalker(sourceFile, this.ruleName, options));
};
Rule.prototype.isEnabled = function () {
return _super.prototype.isEnabled.call(this) && this.ruleArguments.length !== 0;
};
return Rule;
}(Lint.Rules.AbstractRule));
/* tslint:disable:object-literal-sort-keys */
Rule.metadata = {
ruleName: "trailing-comma",
description: (_a = ["\n Requires or disallows trailing commas in array and object literals, destructuring assignments, function typings,\n named imports and exports and function parameters."], _a.raw = ["\n Requires or disallows trailing commas in array and object literals, destructuring assignments, function typings,\n named imports and exports and function parameters."], Lint.Utils.dedent(_a)),
hasFix: true,
optionsDescription: (_b = ["\n One argument which is an object with the keys `multiline` and `singleline`.\n Both can be set to a string (`\"always\"` or `\"never\"`) or an object.\n\n The object can contain any of the following keys: `\"arrays\"`, `\"objects\"`, `\"functions\"`,\n `\"imports\"`, `\"exports\"`, and `\"typeLiterals\"`; each key can have one of the following\n values: `\"always\"`, `\"never\"`, and `\"ignore\"`. Any missing keys will default to `\"ignore\"`.\n\n * `\"multiline\"` checks multi-line object literals.\n * `\"singleline\"` checks single-line object literals.\n\n An array is considered \"multiline\" if its closing bracket is on a line\n after the last array element. The same general logic is followed for\n object literals, function typings, named import statements\n and function parameters."], _b.raw = ["\n One argument which is an object with the keys \\`multiline\\` and \\`singleline\\`.\n Both can be set to a string (\\`\"always\"\\` or \\`\"never\"\\`) or an object.\n\n The object can contain any of the following keys: \\`\"arrays\"\\`, \\`\"objects\"\\`, \\`\"functions\"\\`,\n \\`\"imports\"\\`, \\`\"exports\"\\`, and \\`\"typeLiterals\"\\`; each key can have one of the following\n values: \\`\"always\"\\`, \\`\"never\"\\`, and \\`\"ignore\"\\`. Any missing keys will default to \\`\"ignore\"\\`.\n\n * \\`\"multiline\"\\` checks multi-line object literals.\n * \\`\"singleline\"\\` checks single-line object literals.\n\n An array is considered \"multiline\" if its closing bracket is on a line\n after the last array element. The same general logic is followed for\n object literals, function typings, named import statements\n and function parameters."], Lint.Utils.dedent(_b)),
options: {
type: "object",
properties: {
multiline: metadataOptionShape,
singleline: metadataOptionShape,
},
additionalProperties: false,
},
optionExamples: [
[true, { multiline: "always", singleline: "never" }],
[
true,
{
multiline: {
objects: "always",
arrays: "always",
functions: "never",
typeLiterals: "ignore",
},
},
],
],
type: "maintainability",
typescriptOnly: false,
};
/* tslint:enable:object-literal-sort-keys */
Rule.FAILURE_STRING_NEVER = "Unnecessary trailing comma";
Rule.FAILURE_STRING_ALWAYS = "Missing trailing comma";
exports.Rule = Rule;
var TrailingCommaWalker = (function (_super) {
tslib_1.__extends(TrailingCommaWalker, _super);
function TrailingCommaWalker() {
return _super !== null && _super.apply(this, arguments) || this;
}
TrailingCommaWalker.prototype.walk = function (sourceFile) {
var _this = this;
var cb = function (node) {
switch (node.kind) {
case ts.SyntaxKind.ArrayLiteralExpression:
case ts.SyntaxKind.ArrayBindingPattern:
_this.checkList(node.elements, node.end, "arrays");
break;
case ts.SyntaxKind.ObjectBindingPattern:
_this.checkList(node.elements, node.end, "objects");
break;
case ts.SyntaxKind.NamedImports:
_this.checkList(node.elements, node.end, "imports");
break;
case ts.SyntaxKind.NamedExports:
_this.checkList(node.elements, node.end, "exports");
break;
case ts.SyntaxKind.ObjectLiteralExpression:
_this.checkList(node.properties, node.end, "objects");
break;
case ts.SyntaxKind.EnumDeclaration:
_this.checkList(node.members, node.end, "objects");
break;
case ts.SyntaxKind.NewExpression:
if (node.arguments === undefined) {
break;
}
// falls through
case ts.SyntaxKind.CallExpression:
_this.checkList(node.arguments, node.end, "functions");
break;
case ts.SyntaxKind.ArrowFunction:
case ts.SyntaxKind.Constructor:
case ts.SyntaxKind.FunctionDeclaration:
case ts.SyntaxKind.FunctionExpression:
case ts.SyntaxKind.MethodDeclaration:
case ts.SyntaxKind.SetAccessor:
case ts.SyntaxKind.MethodSignature:
case ts.SyntaxKind.ConstructSignature:
case ts.SyntaxKind.ConstructorType:
case ts.SyntaxKind.FunctionType:
case ts.SyntaxKind.CallSignature:
_this.checkListWithEndToken(node, node.parameters, ts.SyntaxKind.CloseParenToken, "functions");
break;
case ts.SyntaxKind.TypeLiteral:
_this.checkTypeLiteral(node);
break;
default:
}
return ts.forEachChild(node, cb);
};
return ts.forEachChild(sourceFile, cb);
};
TrailingCommaWalker.prototype.checkTypeLiteral = function (node) {
var members = node.members;
if (members.length === 0) {
return;
}
var sourceText = this.sourceFile.text;
for (var _i = 0, members_1 = members; _i < members_1.length; _i++) {
var member = members_1[_i];
// PropertySignature in TypeLiteral can end with semicolon or comma. If one ends with a semicolon don't check for trailing comma
if (sourceText[member.end - 1] === ";") {
return;
}
}
// The trailing comma is part of the last member and therefore not present as hasTrailingComma on the NodeArray
var hasTrailingComma = sourceText[members.end - 1] === ",";
return this.checkComma(hasTrailingComma, members, node.end, "typeLiterals");
};
TrailingCommaWalker.prototype.checkListWithEndToken = function (node, list, closeTokenKind, optionKey) {
if (list.length === 0) {
return;
}
var token = tsutils_1.getChildOfKind(node, closeTokenKind, this.sourceFile);
if (token !== undefined) {
return this.checkComma(list.hasTrailingComma === true, list, token.end, optionKey);
}
};
TrailingCommaWalker.prototype.checkList = function (list, closeElementPos, optionKey) {
if (list.length === 0) {
return;
}
return this.checkComma(list.hasTrailingComma === true, list, closeElementPos, optionKey);
};
/* Expects `list.length !== 0` */
TrailingCommaWalker.prototype.checkComma = function (hasTrailingComma, list, closeTokenPos, optionKey) {
var options = tsutils_1.isSameLine(this.sourceFile, list[list.length - 1].end, closeTokenPos)
? this.options.singleline
: this.options.multiline;
var option = options[optionKey];
if (option === "always" && !hasTrailingComma) {
this.addFailureAt(list.end, 0, Rule.FAILURE_STRING_ALWAYS, Lint.Replacement.appendText(list.end, ","));
}
else if (option === "never" && hasTrailingComma) {
this.addFailureAt(list.end - 1, 1, Rule.FAILURE_STRING_NEVER, Lint.Replacement.deleteText(list.end - 1, 1));
}
};
return TrailingCommaWalker;
}(Lint.AbstractWalker));
var _a, _b;
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