1138 lines
44 KiB
JavaScript
1138 lines
44 KiB
JavaScript
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/**
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* @fileoverview This option sets a specific tab width for your code
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*
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* This rule has been ported and modified from nodeca.
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* @author Vitaly Puzrin
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* @author Gyandeep Singh
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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 astUtils = require("../ast-utils");
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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/* istanbul ignore next: this rule has known coverage issues, but it's deprecated and shouldn't be updated in the future anyway. */
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module.exports = {
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meta: {
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docs: {
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description: "enforce consistent indentation",
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category: "Stylistic Issues",
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recommended: false,
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replacedBy: ["indent"]
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},
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deprecated: true,
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fixable: "whitespace",
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schema: [
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{
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oneOf: [
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{
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enum: ["tab"]
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},
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{
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type: "integer",
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minimum: 0
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}
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]
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},
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{
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type: "object",
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properties: {
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SwitchCase: {
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type: "integer",
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minimum: 0
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},
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VariableDeclarator: {
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oneOf: [
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{
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type: "integer",
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minimum: 0
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},
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{
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type: "object",
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properties: {
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var: {
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type: "integer",
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minimum: 0
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},
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let: {
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type: "integer",
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minimum: 0
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},
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const: {
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type: "integer",
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minimum: 0
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}
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}
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}
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]
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},
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outerIIFEBody: {
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type: "integer",
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minimum: 0
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},
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MemberExpression: {
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type: "integer",
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minimum: 0
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},
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FunctionDeclaration: {
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type: "object",
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properties: {
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parameters: {
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oneOf: [
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{
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type: "integer",
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minimum: 0
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},
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{
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enum: ["first"]
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}
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]
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},
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body: {
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type: "integer",
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minimum: 0
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}
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}
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},
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FunctionExpression: {
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type: "object",
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properties: {
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parameters: {
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oneOf: [
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{
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type: "integer",
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minimum: 0
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},
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{
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enum: ["first"]
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}
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]
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},
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body: {
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type: "integer",
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minimum: 0
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}
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}
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},
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CallExpression: {
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type: "object",
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properties: {
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parameters: {
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oneOf: [
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{
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type: "integer",
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minimum: 0
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},
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{
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enum: ["first"]
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}
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]
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}
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}
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},
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ArrayExpression: {
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oneOf: [
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{
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type: "integer",
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minimum: 0
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},
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{
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enum: ["first"]
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}
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]
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},
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ObjectExpression: {
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oneOf: [
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{
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type: "integer",
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minimum: 0
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},
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{
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enum: ["first"]
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}
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]
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}
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},
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additionalProperties: false
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}
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]
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},
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create(context) {
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const DEFAULT_VARIABLE_INDENT = 1;
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const DEFAULT_PARAMETER_INDENT = null; // For backwards compatibility, don't check parameter indentation unless specified in the config
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const DEFAULT_FUNCTION_BODY_INDENT = 1;
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let indentType = "space";
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let indentSize = 4;
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const options = {
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SwitchCase: 0,
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VariableDeclarator: {
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var: DEFAULT_VARIABLE_INDENT,
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let: DEFAULT_VARIABLE_INDENT,
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const: DEFAULT_VARIABLE_INDENT
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},
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outerIIFEBody: null,
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FunctionDeclaration: {
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parameters: DEFAULT_PARAMETER_INDENT,
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body: DEFAULT_FUNCTION_BODY_INDENT
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},
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FunctionExpression: {
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parameters: DEFAULT_PARAMETER_INDENT,
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body: DEFAULT_FUNCTION_BODY_INDENT
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},
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CallExpression: {
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arguments: DEFAULT_PARAMETER_INDENT
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},
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ArrayExpression: 1,
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ObjectExpression: 1
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};
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const sourceCode = context.getSourceCode();
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if (context.options.length) {
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if (context.options[0] === "tab") {
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indentSize = 1;
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indentType = "tab";
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} else /* istanbul ignore else : this will be caught by options validation */ if (typeof context.options[0] === "number") {
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indentSize = context.options[0];
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indentType = "space";
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}
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if (context.options[1]) {
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const opts = context.options[1];
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options.SwitchCase = opts.SwitchCase || 0;
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const variableDeclaratorRules = opts.VariableDeclarator;
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if (typeof variableDeclaratorRules === "number") {
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options.VariableDeclarator = {
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var: variableDeclaratorRules,
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let: variableDeclaratorRules,
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const: variableDeclaratorRules
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};
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} else if (typeof variableDeclaratorRules === "object") {
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Object.assign(options.VariableDeclarator, variableDeclaratorRules);
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}
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if (typeof opts.outerIIFEBody === "number") {
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options.outerIIFEBody = opts.outerIIFEBody;
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}
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if (typeof opts.MemberExpression === "number") {
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options.MemberExpression = opts.MemberExpression;
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}
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if (typeof opts.FunctionDeclaration === "object") {
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Object.assign(options.FunctionDeclaration, opts.FunctionDeclaration);
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}
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if (typeof opts.FunctionExpression === "object") {
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Object.assign(options.FunctionExpression, opts.FunctionExpression);
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}
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if (typeof opts.CallExpression === "object") {
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Object.assign(options.CallExpression, opts.CallExpression);
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}
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if (typeof opts.ArrayExpression === "number" || typeof opts.ArrayExpression === "string") {
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options.ArrayExpression = opts.ArrayExpression;
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}
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if (typeof opts.ObjectExpression === "number" || typeof opts.ObjectExpression === "string") {
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options.ObjectExpression = opts.ObjectExpression;
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}
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}
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}
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const caseIndentStore = {};
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/**
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* Creates an error message for a line, given the expected/actual indentation.
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* @param {int} expectedAmount The expected amount of indentation characters for this line
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* @param {int} actualSpaces The actual number of indentation spaces that were found on this line
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* @param {int} actualTabs The actual number of indentation tabs that were found on this line
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* @returns {string} An error message for this line
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*/
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function createErrorMessage(expectedAmount, actualSpaces, actualTabs) {
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const expectedStatement = `${expectedAmount} ${indentType}${expectedAmount === 1 ? "" : "s"}`; // e.g. "2 tabs"
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const foundSpacesWord = `space${actualSpaces === 1 ? "" : "s"}`; // e.g. "space"
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const foundTabsWord = `tab${actualTabs === 1 ? "" : "s"}`; // e.g. "tabs"
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let foundStatement;
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if (actualSpaces > 0 && actualTabs > 0) {
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foundStatement = `${actualSpaces} ${foundSpacesWord} and ${actualTabs} ${foundTabsWord}`; // e.g. "1 space and 2 tabs"
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} else if (actualSpaces > 0) {
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/*
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* Abbreviate the message if the expected indentation is also spaces.
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* e.g. 'Expected 4 spaces but found 2' rather than 'Expected 4 spaces but found 2 spaces'
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*/
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foundStatement = indentType === "space" ? actualSpaces : `${actualSpaces} ${foundSpacesWord}`;
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} else if (actualTabs > 0) {
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foundStatement = indentType === "tab" ? actualTabs : `${actualTabs} ${foundTabsWord}`;
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} else {
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foundStatement = "0";
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}
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return `Expected indentation of ${expectedStatement} but found ${foundStatement}.`;
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}
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/**
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* Reports a given indent violation
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* @param {ASTNode} node Node violating the indent rule
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* @param {int} needed Expected indentation character count
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* @param {int} gottenSpaces Indentation space count in the actual node/code
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* @param {int} gottenTabs Indentation tab count in the actual node/code
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* @param {Object=} loc Error line and column location
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* @param {boolean} isLastNodeCheck Is the error for last node check
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* @param {int} lastNodeCheckEndOffset Number of charecters to skip from the end
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* @returns {void}
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*/
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function report(node, needed, gottenSpaces, gottenTabs, loc, isLastNodeCheck) {
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if (gottenSpaces && gottenTabs) {
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// To avoid conflicts with `no-mixed-spaces-and-tabs`, don't report lines that have both spaces and tabs.
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return;
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}
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const desiredIndent = (indentType === "space" ? " " : "\t").repeat(needed);
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const textRange = isLastNodeCheck
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? [node.range[1] - node.loc.end.column, node.range[1] - node.loc.end.column + gottenSpaces + gottenTabs]
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: [node.range[0] - node.loc.start.column, node.range[0] - node.loc.start.column + gottenSpaces + gottenTabs];
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context.report({
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node,
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loc,
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message: createErrorMessage(needed, gottenSpaces, gottenTabs),
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fix: fixer => fixer.replaceTextRange(textRange, desiredIndent)
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});
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}
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/**
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* Get the actual indent of node
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* @param {ASTNode|Token} node Node to examine
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* @param {boolean} [byLastLine=false] get indent of node's last line
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* @returns {Object} The node's indent. Contains keys `space` and `tab`, representing the indent of each character. Also
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* contains keys `goodChar` and `badChar`, where `goodChar` is the amount of the user's desired indentation character, and
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* `badChar` is the amount of the other indentation character.
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*/
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function getNodeIndent(node, byLastLine) {
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const token = byLastLine ? sourceCode.getLastToken(node) : sourceCode.getFirstToken(node);
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const srcCharsBeforeNode = sourceCode.getText(token, token.loc.start.column).split("");
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const indentChars = srcCharsBeforeNode.slice(0, srcCharsBeforeNode.findIndex(char => char !== " " && char !== "\t"));
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const spaces = indentChars.filter(char => char === " ").length;
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const tabs = indentChars.filter(char => char === "\t").length;
|
||
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||
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return {
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||
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space: spaces,
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tab: tabs,
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goodChar: indentType === "space" ? spaces : tabs,
|
||
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badChar: indentType === "space" ? tabs : spaces
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||
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};
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
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* Checks node is the first in its own start line. By default it looks by start line.
|
||
|
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* @param {ASTNode} node The node to check
|
||
|
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* @param {boolean} [byEndLocation=false] Lookup based on start position or end
|
||
|
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* @returns {boolean} true if its the first in the its start line
|
||
|
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*/
|
||
|
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function isNodeFirstInLine(node, byEndLocation) {
|
||
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const firstToken = byEndLocation === true ? sourceCode.getLastToken(node, 1) : sourceCode.getTokenBefore(node),
|
||
|
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startLine = byEndLocation === true ? node.loc.end.line : node.loc.start.line,
|
||
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endLine = firstToken ? firstToken.loc.end.line : -1;
|
||
|
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|
||
|
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return startLine !== endLine;
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
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* Check indent for node
|
||
|
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* @param {ASTNode} node Node to check
|
||
|
|
* @param {int} neededIndent needed indent
|
||
|
|
* @param {boolean} [excludeCommas=false] skip comma on start of line
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkNodeIndent(node, neededIndent) {
|
||
|
|
const actualIndent = getNodeIndent(node, false);
|
||
|
|
|
||
|
|
if (
|
||
|
|
node.type !== "ArrayExpression" &&
|
||
|
|
node.type !== "ObjectExpression" &&
|
||
|
|
(actualIndent.goodChar !== neededIndent || actualIndent.badChar !== 0) &&
|
||
|
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isNodeFirstInLine(node)
|
||
|
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) {
|
||
|
|
report(node, neededIndent, actualIndent.space, actualIndent.tab);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.type === "IfStatement" && node.alternate) {
|
||
|
|
const elseToken = sourceCode.getTokenBefore(node.alternate);
|
||
|
|
|
||
|
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checkNodeIndent(elseToken, neededIndent);
|
||
|
|
|
||
|
|
if (!isNodeFirstInLine(node.alternate)) {
|
||
|
|
checkNodeIndent(node.alternate, neededIndent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.type === "TryStatement" && node.handler) {
|
||
|
|
const catchToken = sourceCode.getFirstToken(node.handler);
|
||
|
|
|
||
|
|
checkNodeIndent(catchToken, neededIndent);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.type === "TryStatement" && node.finalizer) {
|
||
|
|
const finallyToken = sourceCode.getTokenBefore(node.finalizer);
|
||
|
|
|
||
|
|
checkNodeIndent(finallyToken, neededIndent);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.type === "DoWhileStatement") {
|
||
|
|
const whileToken = sourceCode.getTokenAfter(node.body);
|
||
|
|
|
||
|
|
checkNodeIndent(whileToken, neededIndent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check indent for nodes list
|
||
|
|
* @param {ASTNode[]} nodes list of node objects
|
||
|
|
* @param {int} indent needed indent
|
||
|
|
* @param {boolean} [excludeCommas=false] skip comma on start of line
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkNodesIndent(nodes, indent) {
|
||
|
|
nodes.forEach(node => checkNodeIndent(node, indent));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check last node line indent this detects, that block closed correctly
|
||
|
|
* @param {ASTNode} node Node to examine
|
||
|
|
* @param {int} lastLineIndent needed indent
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkLastNodeLineIndent(node, lastLineIndent) {
|
||
|
|
const lastToken = sourceCode.getLastToken(node);
|
||
|
|
const endIndent = getNodeIndent(lastToken, true);
|
||
|
|
|
||
|
|
if ((endIndent.goodChar !== lastLineIndent || endIndent.badChar !== 0) && isNodeFirstInLine(node, true)) {
|
||
|
|
report(
|
||
|
|
node,
|
||
|
|
lastLineIndent,
|
||
|
|
endIndent.space,
|
||
|
|
endIndent.tab,
|
||
|
|
{ line: lastToken.loc.start.line, column: lastToken.loc.start.column },
|
||
|
|
true
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check last node line indent this detects, that block closed correctly
|
||
|
|
* This function for more complicated return statement case, where closing parenthesis may be followed by ';'
|
||
|
|
* @param {ASTNode} node Node to examine
|
||
|
|
* @param {int} firstLineIndent first line needed indent
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkLastReturnStatementLineIndent(node, firstLineIndent) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* in case if return statement ends with ');' we have traverse back to ')'
|
||
|
|
* otherwise we'll measure indent for ';' and replace ')'
|
||
|
|
*/
|
||
|
|
const lastToken = sourceCode.getLastToken(node, astUtils.isClosingParenToken);
|
||
|
|
const textBeforeClosingParenthesis = sourceCode.getText(lastToken, lastToken.loc.start.column).slice(0, -1);
|
||
|
|
|
||
|
|
if (textBeforeClosingParenthesis.trim()) {
|
||
|
|
|
||
|
|
// There are tokens before the closing paren, don't report this case
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const endIndent = getNodeIndent(lastToken, true);
|
||
|
|
|
||
|
|
if (endIndent.goodChar !== firstLineIndent) {
|
||
|
|
report(
|
||
|
|
node,
|
||
|
|
firstLineIndent,
|
||
|
|
endIndent.space,
|
||
|
|
endIndent.tab,
|
||
|
|
{ line: lastToken.loc.start.line, column: lastToken.loc.start.column },
|
||
|
|
true
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check first node line indent is correct
|
||
|
|
* @param {ASTNode} node Node to examine
|
||
|
|
* @param {int} firstLineIndent needed indent
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkFirstNodeLineIndent(node, firstLineIndent) {
|
||
|
|
const startIndent = getNodeIndent(node, false);
|
||
|
|
|
||
|
|
if ((startIndent.goodChar !== firstLineIndent || startIndent.badChar !== 0) && isNodeFirstInLine(node)) {
|
||
|
|
report(
|
||
|
|
node,
|
||
|
|
firstLineIndent,
|
||
|
|
startIndent.space,
|
||
|
|
startIndent.tab,
|
||
|
|
{ line: node.loc.start.line, column: node.loc.start.column }
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a parent node of given node based on a specified type
|
||
|
|
* if not present then return null
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @param {string} type type that is being looked for
|
||
|
|
* @param {string} stopAtList end points for the evaluating code
|
||
|
|
* @returns {ASTNode|void} if found then node otherwise null
|
||
|
|
*/
|
||
|
|
function getParentNodeByType(node, type, stopAtList) {
|
||
|
|
let parent = node.parent;
|
||
|
|
|
||
|
|
if (!stopAtList) {
|
||
|
|
stopAtList = ["Program"];
|
||
|
|
}
|
||
|
|
|
||
|
|
while (parent.type !== type && stopAtList.indexOf(parent.type) === -1 && parent.type !== "Program") {
|
||
|
|
parent = parent.parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
return parent.type === type ? parent : null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the VariableDeclarator based on the current node
|
||
|
|
* if not present then return null
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @returns {ASTNode|void} if found then node otherwise null
|
||
|
|
*/
|
||
|
|
function getVariableDeclaratorNode(node) {
|
||
|
|
return getParentNodeByType(node, "VariableDeclarator");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check to see if the node is part of the multi-line variable declaration.
|
||
|
|
* Also if its on the same line as the varNode
|
||
|
|
* @param {ASTNode} node node to check
|
||
|
|
* @param {ASTNode} varNode variable declaration node to check against
|
||
|
|
* @returns {boolean} True if all the above condition satisfy
|
||
|
|
*/
|
||
|
|
function isNodeInVarOnTop(node, varNode) {
|
||
|
|
return varNode &&
|
||
|
|
varNode.parent.loc.start.line === node.loc.start.line &&
|
||
|
|
varNode.parent.declarations.length > 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check to see if the argument before the callee node is multi-line and
|
||
|
|
* there should only be 1 argument before the callee node
|
||
|
|
* @param {ASTNode} node node to check
|
||
|
|
* @returns {boolean} True if arguments are multi-line
|
||
|
|
*/
|
||
|
|
function isArgBeforeCalleeNodeMultiline(node) {
|
||
|
|
const parent = node.parent;
|
||
|
|
|
||
|
|
if (parent.arguments.length >= 2 && parent.arguments[1] === node) {
|
||
|
|
return parent.arguments[0].loc.end.line > parent.arguments[0].loc.start.line;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check to see if the node is a file level IIFE
|
||
|
|
* @param {ASTNode} node The function node to check.
|
||
|
|
* @returns {boolean} True if the node is the outer IIFE
|
||
|
|
*/
|
||
|
|
function isOuterIIFE(node) {
|
||
|
|
const parent = node.parent;
|
||
|
|
let stmt = parent.parent;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Verify that the node is an IIEF
|
||
|
|
*/
|
||
|
|
if (
|
||
|
|
parent.type !== "CallExpression" ||
|
||
|
|
parent.callee !== node) {
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Navigate legal ancestors to determine whether this IIEF is outer
|
||
|
|
*/
|
||
|
|
while (
|
||
|
|
stmt.type === "UnaryExpression" && (
|
||
|
|
stmt.operator === "!" ||
|
||
|
|
stmt.operator === "~" ||
|
||
|
|
stmt.operator === "+" ||
|
||
|
|
stmt.operator === "-") ||
|
||
|
|
stmt.type === "AssignmentExpression" ||
|
||
|
|
stmt.type === "LogicalExpression" ||
|
||
|
|
stmt.type === "SequenceExpression" ||
|
||
|
|
stmt.type === "VariableDeclarator") {
|
||
|
|
|
||
|
|
stmt = stmt.parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ((
|
||
|
|
stmt.type === "ExpressionStatement" ||
|
||
|
|
stmt.type === "VariableDeclaration") &&
|
||
|
|
stmt.parent && stmt.parent.type === "Program"
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check indent for function block content
|
||
|
|
* @param {ASTNode} node A BlockStatement node that is inside of a function.
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkIndentInFunctionBlock(node) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Search first caller in chain.
|
||
|
|
* Ex.:
|
||
|
|
*
|
||
|
|
* Models <- Identifier
|
||
|
|
* .User
|
||
|
|
* .find()
|
||
|
|
* .exec(function() {
|
||
|
|
* // function body
|
||
|
|
* });
|
||
|
|
*
|
||
|
|
* Looks for 'Models'
|
||
|
|
*/
|
||
|
|
const calleeNode = node.parent; // FunctionExpression
|
||
|
|
let indent;
|
||
|
|
|
||
|
|
if (calleeNode.parent &&
|
||
|
|
(calleeNode.parent.type === "Property" ||
|
||
|
|
calleeNode.parent.type === "ArrayExpression")) {
|
||
|
|
|
||
|
|
// If function is part of array or object, comma can be put at left
|
||
|
|
indent = getNodeIndent(calleeNode, false).goodChar;
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// If function is standalone, simple calculate indent
|
||
|
|
indent = getNodeIndent(calleeNode).goodChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (calleeNode.parent.type === "CallExpression") {
|
||
|
|
const calleeParent = calleeNode.parent;
|
||
|
|
|
||
|
|
if (calleeNode.type !== "FunctionExpression" && calleeNode.type !== "ArrowFunctionExpression") {
|
||
|
|
if (calleeParent && calleeParent.loc.start.line < node.loc.start.line) {
|
||
|
|
indent = getNodeIndent(calleeParent).goodChar;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (isArgBeforeCalleeNodeMultiline(calleeNode) &&
|
||
|
|
calleeParent.callee.loc.start.line === calleeParent.callee.loc.end.line &&
|
||
|
|
!isNodeFirstInLine(calleeNode)) {
|
||
|
|
indent = getNodeIndent(calleeParent).goodChar;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* function body indent should be indent + indent size, unless this
|
||
|
|
* is a FunctionDeclaration, FunctionExpression, or outer IIFE and the corresponding options are enabled.
|
||
|
|
*/
|
||
|
|
let functionOffset = indentSize;
|
||
|
|
|
||
|
|
if (options.outerIIFEBody !== null && isOuterIIFE(calleeNode)) {
|
||
|
|
functionOffset = options.outerIIFEBody * indentSize;
|
||
|
|
} else if (calleeNode.type === "FunctionExpression") {
|
||
|
|
functionOffset = options.FunctionExpression.body * indentSize;
|
||
|
|
} else if (calleeNode.type === "FunctionDeclaration") {
|
||
|
|
functionOffset = options.FunctionDeclaration.body * indentSize;
|
||
|
|
}
|
||
|
|
indent += functionOffset;
|
||
|
|
|
||
|
|
// check if the node is inside a variable
|
||
|
|
const parentVarNode = getVariableDeclaratorNode(node);
|
||
|
|
|
||
|
|
if (parentVarNode && isNodeInVarOnTop(node, parentVarNode)) {
|
||
|
|
indent += indentSize * options.VariableDeclarator[parentVarNode.parent.kind];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.body.length > 0) {
|
||
|
|
checkNodesIndent(node.body, indent);
|
||
|
|
}
|
||
|
|
|
||
|
|
checkLastNodeLineIndent(node, indent - functionOffset);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the given node starts and ends on the same line
|
||
|
|
* @param {ASTNode} node The node to check
|
||
|
|
* @returns {boolean} Whether or not the block starts and ends on the same line.
|
||
|
|
*/
|
||
|
|
function isSingleLineNode(node) {
|
||
|
|
const lastToken = sourceCode.getLastToken(node),
|
||
|
|
startLine = node.loc.start.line,
|
||
|
|
endLine = lastToken.loc.end.line;
|
||
|
|
|
||
|
|
return startLine === endLine;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check to see if the first element inside an array is an object and on the same line as the node
|
||
|
|
* If the node is not an array then it will return false.
|
||
|
|
* @param {ASTNode} node node to check
|
||
|
|
* @returns {boolean} success/failure
|
||
|
|
*/
|
||
|
|
function isFirstArrayElementOnSameLine(node) {
|
||
|
|
if (node.type === "ArrayExpression" && node.elements[0]) {
|
||
|
|
return node.elements[0].loc.start.line === node.loc.start.line && node.elements[0].type === "ObjectExpression";
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check indent for array block content or object block content
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkIndentInArrayOrObjectBlock(node) {
|
||
|
|
|
||
|
|
// Skip inline
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
let elements = (node.type === "ArrayExpression") ? node.elements : node.properties;
|
||
|
|
|
||
|
|
// filter out empty elements example would be [ , 2] so remove first element as espree considers it as null
|
||
|
|
elements = elements.filter(elem => elem !== null);
|
||
|
|
|
||
|
|
let nodeIndent;
|
||
|
|
let elementsIndent;
|
||
|
|
const parentVarNode = getVariableDeclaratorNode(node);
|
||
|
|
|
||
|
|
// TODO - come up with a better strategy in future
|
||
|
|
if (isNodeFirstInLine(node)) {
|
||
|
|
const parent = node.parent;
|
||
|
|
|
||
|
|
nodeIndent = getNodeIndent(parent).goodChar;
|
||
|
|
if (!parentVarNode || parentVarNode.loc.start.line !== node.loc.start.line) {
|
||
|
|
if (parent.type !== "VariableDeclarator" || parentVarNode === parentVarNode.parent.declarations[0]) {
|
||
|
|
if (parent.type === "VariableDeclarator" && parentVarNode.loc.start.line === parent.loc.start.line) {
|
||
|
|
nodeIndent += (indentSize * options.VariableDeclarator[parentVarNode.parent.kind]);
|
||
|
|
} else if (parent.type === "ObjectExpression" || parent.type === "ArrayExpression") {
|
||
|
|
const parentElements = node.parent.type === "ObjectExpression" ? node.parent.properties : node.parent.elements;
|
||
|
|
|
||
|
|
if (parentElements[0] &&
|
||
|
|
parentElements[0].loc.start.line === parent.loc.start.line &&
|
||
|
|
parentElements[0].loc.end.line !== parent.loc.start.line) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* If the first element of the array spans multiple lines, don't increase the expected indentation of the rest.
|
||
|
|
* e.g. [{
|
||
|
|
* foo: 1
|
||
|
|
* },
|
||
|
|
* {
|
||
|
|
* bar: 1
|
||
|
|
* }]
|
||
|
|
* the second object is not indented.
|
||
|
|
*/
|
||
|
|
} else if (typeof options[parent.type] === "number") {
|
||
|
|
nodeIndent += options[parent.type] * indentSize;
|
||
|
|
} else {
|
||
|
|
nodeIndent = parentElements[0].loc.start.column;
|
||
|
|
}
|
||
|
|
} else if (parent.type === "CallExpression" || parent.type === "NewExpression") {
|
||
|
|
if (typeof options.CallExpression.arguments === "number") {
|
||
|
|
nodeIndent += options.CallExpression.arguments * indentSize;
|
||
|
|
} else if (options.CallExpression.arguments === "first") {
|
||
|
|
if (parent.arguments.indexOf(node) !== -1) {
|
||
|
|
nodeIndent = parent.arguments[0].loc.start.column;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
nodeIndent += indentSize;
|
||
|
|
}
|
||
|
|
} else if (parent.type === "LogicalExpression" || parent.type === "ArrowFunctionExpression") {
|
||
|
|
nodeIndent += indentSize;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else if (!parentVarNode && !isFirstArrayElementOnSameLine(parent) && parent.type !== "MemberExpression" && parent.type !== "ExpressionStatement" && parent.type !== "AssignmentExpression" && parent.type !== "Property") {
|
||
|
|
nodeIndent += indentSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
checkFirstNodeLineIndent(node, nodeIndent);
|
||
|
|
} else {
|
||
|
|
nodeIndent = getNodeIndent(node).goodChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options[node.type] === "first") {
|
||
|
|
elementsIndent = elements.length ? elements[0].loc.start.column : 0; // If there are no elements, elementsIndent doesn't matter.
|
||
|
|
} else {
|
||
|
|
elementsIndent = nodeIndent + indentSize * options[node.type];
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Check if the node is a multiple variable declaration; if so, then
|
||
|
|
* make sure indentation takes that into account.
|
||
|
|
*/
|
||
|
|
if (isNodeInVarOnTop(node, parentVarNode)) {
|
||
|
|
elementsIndent += indentSize * options.VariableDeclarator[parentVarNode.parent.kind];
|
||
|
|
}
|
||
|
|
|
||
|
|
checkNodesIndent(elements, elementsIndent);
|
||
|
|
|
||
|
|
if (elements.length > 0) {
|
||
|
|
|
||
|
|
// Skip last block line check if last item in same line
|
||
|
|
if (elements[elements.length - 1].loc.end.line === node.loc.end.line) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
checkLastNodeLineIndent(node, nodeIndent +
|
||
|
|
(isNodeInVarOnTop(node, parentVarNode) ? options.VariableDeclarator[parentVarNode.parent.kind] * indentSize : 0));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the node or node body is a BlockStatement or not
|
||
|
|
* @param {ASTNode} node node to test
|
||
|
|
* @returns {boolean} True if it or its body is a block statement
|
||
|
|
*/
|
||
|
|
function isNodeBodyBlock(node) {
|
||
|
|
return node.type === "BlockStatement" || node.type === "ClassBody" || (node.body && node.body.type === "BlockStatement") ||
|
||
|
|
(node.consequent && node.consequent.type === "BlockStatement");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check indentation for blocks
|
||
|
|
* @param {ASTNode} node node to check
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function blockIndentationCheck(node) {
|
||
|
|
|
||
|
|
// Skip inline blocks
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.parent && (
|
||
|
|
node.parent.type === "FunctionExpression" ||
|
||
|
|
node.parent.type === "FunctionDeclaration" ||
|
||
|
|
node.parent.type === "ArrowFunctionExpression")
|
||
|
|
) {
|
||
|
|
checkIndentInFunctionBlock(node);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
let indent;
|
||
|
|
let nodesToCheck = [];
|
||
|
|
|
||
|
|
/*
|
||
|
|
* For this statements we should check indent from statement beginning,
|
||
|
|
* not from the beginning of the block.
|
||
|
|
*/
|
||
|
|
const statementsWithProperties = [
|
||
|
|
"IfStatement", "WhileStatement", "ForStatement", "ForInStatement", "ForOfStatement", "DoWhileStatement", "ClassDeclaration", "TryStatement"
|
||
|
|
];
|
||
|
|
|
||
|
|
if (node.parent && statementsWithProperties.indexOf(node.parent.type) !== -1 && isNodeBodyBlock(node)) {
|
||
|
|
indent = getNodeIndent(node.parent).goodChar;
|
||
|
|
} else if (node.parent && node.parent.type === "CatchClause") {
|
||
|
|
indent = getNodeIndent(node.parent.parent).goodChar;
|
||
|
|
} else {
|
||
|
|
indent = getNodeIndent(node).goodChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.type === "IfStatement" && node.consequent.type !== "BlockStatement") {
|
||
|
|
nodesToCheck = [node.consequent];
|
||
|
|
} else if (Array.isArray(node.body)) {
|
||
|
|
nodesToCheck = node.body;
|
||
|
|
} else {
|
||
|
|
nodesToCheck = [node.body];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nodesToCheck.length > 0) {
|
||
|
|
checkNodesIndent(nodesToCheck, indent + indentSize);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (node.type === "BlockStatement") {
|
||
|
|
checkLastNodeLineIndent(node, indent);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filter out the elements which are on the same line of each other or the node.
|
||
|
|
* basically have only 1 elements from each line except the variable declaration line.
|
||
|
|
* @param {ASTNode} node Variable declaration node
|
||
|
|
* @returns {ASTNode[]} Filtered elements
|
||
|
|
*/
|
||
|
|
function filterOutSameLineVars(node) {
|
||
|
|
return node.declarations.reduce((finalCollection, elem) => {
|
||
|
|
const lastElem = finalCollection[finalCollection.length - 1];
|
||
|
|
|
||
|
|
if ((elem.loc.start.line !== node.loc.start.line && !lastElem) ||
|
||
|
|
(lastElem && lastElem.loc.start.line !== elem.loc.start.line)) {
|
||
|
|
finalCollection.push(elem);
|
||
|
|
}
|
||
|
|
|
||
|
|
return finalCollection;
|
||
|
|
}, []);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check indentation for variable declarations
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkIndentInVariableDeclarations(node) {
|
||
|
|
const elements = filterOutSameLineVars(node);
|
||
|
|
const nodeIndent = getNodeIndent(node).goodChar;
|
||
|
|
const lastElement = elements[elements.length - 1];
|
||
|
|
|
||
|
|
const elementsIndent = nodeIndent + indentSize * options.VariableDeclarator[node.kind];
|
||
|
|
|
||
|
|
checkNodesIndent(elements, elementsIndent);
|
||
|
|
|
||
|
|
// Only check the last line if there is any token after the last item
|
||
|
|
if (sourceCode.getLastToken(node).loc.end.line <= lastElement.loc.end.line) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const tokenBeforeLastElement = sourceCode.getTokenBefore(lastElement);
|
||
|
|
|
||
|
|
if (tokenBeforeLastElement.value === ",") {
|
||
|
|
|
||
|
|
// Special case for comma-first syntax where the semicolon is indented
|
||
|
|
checkLastNodeLineIndent(node, getNodeIndent(tokenBeforeLastElement).goodChar);
|
||
|
|
} else {
|
||
|
|
checkLastNodeLineIndent(node, elementsIndent - indentSize);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check and decide whether to check for indentation for blockless nodes
|
||
|
|
* Scenarios are for or while statements without braces around them
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function blockLessNodes(node) {
|
||
|
|
if (node.body.type !== "BlockStatement") {
|
||
|
|
blockIndentationCheck(node);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the expected indentation for the case statement
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @param {int} [switchIndent] indent for switch statement
|
||
|
|
* @returns {int} indent size
|
||
|
|
*/
|
||
|
|
function expectedCaseIndent(node, switchIndent) {
|
||
|
|
const switchNode = (node.type === "SwitchStatement") ? node : node.parent;
|
||
|
|
let caseIndent;
|
||
|
|
|
||
|
|
if (caseIndentStore[switchNode.loc.start.line]) {
|
||
|
|
return caseIndentStore[switchNode.loc.start.line];
|
||
|
|
}
|
||
|
|
if (typeof switchIndent === "undefined") {
|
||
|
|
switchIndent = getNodeIndent(switchNode).goodChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (switchNode.cases.length > 0 && options.SwitchCase === 0) {
|
||
|
|
caseIndent = switchIndent;
|
||
|
|
} else {
|
||
|
|
caseIndent = switchIndent + (indentSize * options.SwitchCase);
|
||
|
|
}
|
||
|
|
|
||
|
|
caseIndentStore[switchNode.loc.start.line] = caseIndent;
|
||
|
|
return caseIndent;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks wether a return statement is wrapped in ()
|
||
|
|
* @param {ASTNode} node node to examine
|
||
|
|
* @returns {boolean} the result
|
||
|
|
*/
|
||
|
|
function isWrappedInParenthesis(node) {
|
||
|
|
const regex = /^return\s*?\(\s*?\);*?/;
|
||
|
|
|
||
|
|
const statementWithoutArgument = sourceCode.getText(node).replace(
|
||
|
|
sourceCode.getText(node.argument), ""
|
||
|
|
);
|
||
|
|
|
||
|
|
return regex.test(statementWithoutArgument);
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
Program(node) {
|
||
|
|
if (node.body.length > 0) {
|
||
|
|
|
||
|
|
// Root nodes should have no indent
|
||
|
|
checkNodesIndent(node.body, getNodeIndent(node).goodChar);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
ClassBody: blockIndentationCheck,
|
||
|
|
|
||
|
|
BlockStatement: blockIndentationCheck,
|
||
|
|
|
||
|
|
WhileStatement: blockLessNodes,
|
||
|
|
|
||
|
|
ForStatement: blockLessNodes,
|
||
|
|
|
||
|
|
ForInStatement: blockLessNodes,
|
||
|
|
|
||
|
|
ForOfStatement: blockLessNodes,
|
||
|
|
|
||
|
|
DoWhileStatement: blockLessNodes,
|
||
|
|
|
||
|
|
IfStatement(node) {
|
||
|
|
if (node.consequent.type !== "BlockStatement" && node.consequent.loc.start.line > node.loc.start.line) {
|
||
|
|
blockIndentationCheck(node);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
VariableDeclaration(node) {
|
||
|
|
if (node.declarations[node.declarations.length - 1].loc.start.line > node.declarations[0].loc.start.line) {
|
||
|
|
checkIndentInVariableDeclarations(node);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
ObjectExpression(node) {
|
||
|
|
checkIndentInArrayOrObjectBlock(node);
|
||
|
|
},
|
||
|
|
|
||
|
|
ArrayExpression(node) {
|
||
|
|
checkIndentInArrayOrObjectBlock(node);
|
||
|
|
},
|
||
|
|
|
||
|
|
MemberExpression(node) {
|
||
|
|
|
||
|
|
if (typeof options.MemberExpression === "undefined") {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The typical layout of variable declarations and assignments
|
||
|
|
* alter the expectation of correct indentation. Skip them.
|
||
|
|
* TODO: Add appropriate configuration options for variable
|
||
|
|
* declarations and assignments.
|
||
|
|
*/
|
||
|
|
if (getParentNodeByType(node, "VariableDeclarator", ["FunctionExpression", "ArrowFunctionExpression"])) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (getParentNodeByType(node, "AssignmentExpression", ["FunctionExpression"])) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const propertyIndent = getNodeIndent(node).goodChar + indentSize * options.MemberExpression;
|
||
|
|
|
||
|
|
const checkNodes = [node.property];
|
||
|
|
|
||
|
|
const dot = sourceCode.getTokenBefore(node.property);
|
||
|
|
|
||
|
|
if (dot.type === "Punctuator" && dot.value === ".") {
|
||
|
|
checkNodes.push(dot);
|
||
|
|
}
|
||
|
|
|
||
|
|
checkNodesIndent(checkNodes, propertyIndent);
|
||
|
|
},
|
||
|
|
|
||
|
|
SwitchStatement(node) {
|
||
|
|
|
||
|
|
// Switch is not a 'BlockStatement'
|
||
|
|
const switchIndent = getNodeIndent(node).goodChar;
|
||
|
|
const caseIndent = expectedCaseIndent(node, switchIndent);
|
||
|
|
|
||
|
|
checkNodesIndent(node.cases, caseIndent);
|
||
|
|
|
||
|
|
|
||
|
|
checkLastNodeLineIndent(node, switchIndent);
|
||
|
|
},
|
||
|
|
|
||
|
|
SwitchCase(node) {
|
||
|
|
|
||
|
|
// Skip inline cases
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const caseIndent = expectedCaseIndent(node);
|
||
|
|
|
||
|
|
checkNodesIndent(node.consequent, caseIndent + indentSize);
|
||
|
|
},
|
||
|
|
|
||
|
|
FunctionDeclaration(node) {
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (options.FunctionDeclaration.parameters === "first" && node.params.length) {
|
||
|
|
checkNodesIndent(node.params.slice(1), node.params[0].loc.start.column);
|
||
|
|
} else if (options.FunctionDeclaration.parameters !== null) {
|
||
|
|
checkNodesIndent(node.params, getNodeIndent(node).goodChar + indentSize * options.FunctionDeclaration.parameters);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
FunctionExpression(node) {
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (options.FunctionExpression.parameters === "first" && node.params.length) {
|
||
|
|
checkNodesIndent(node.params.slice(1), node.params[0].loc.start.column);
|
||
|
|
} else if (options.FunctionExpression.parameters !== null) {
|
||
|
|
checkNodesIndent(node.params, getNodeIndent(node).goodChar + indentSize * options.FunctionExpression.parameters);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
ReturnStatement(node) {
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const firstLineIndent = getNodeIndent(node).goodChar;
|
||
|
|
|
||
|
|
// in case if return statement is wrapped in parenthesis
|
||
|
|
if (isWrappedInParenthesis(node)) {
|
||
|
|
checkLastReturnStatementLineIndent(node, firstLineIndent);
|
||
|
|
} else {
|
||
|
|
checkNodeIndent(node, firstLineIndent);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
CallExpression(node) {
|
||
|
|
if (isSingleLineNode(node)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (options.CallExpression.arguments === "first" && node.arguments.length) {
|
||
|
|
checkNodesIndent(node.arguments.slice(1), node.arguments[0].loc.start.column);
|
||
|
|
} else if (options.CallExpression.arguments !== null) {
|
||
|
|
checkNodesIndent(node.arguments, getNodeIndent(node).goodChar + indentSize * options.CallExpression.arguments);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
};
|