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174 lines
7.6 KiB
174 lines
7.6 KiB
/**
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* @fileoverview Enforce newlines between operands of ternary expressions
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* @author Kai Cataldo
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* @deprecated in ESLint v8.53.0
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*/
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"use strict";
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const astUtils = require("./utils/ast-utils");
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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/** @type {import('../shared/types').Rule} */
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module.exports = {
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meta: {
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deprecated: true,
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replacedBy: [],
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type: "layout",
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docs: {
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description: "Enforce newlines between operands of ternary expressions",
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recommended: false,
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url: "https://eslint.org/docs/latest/rules/multiline-ternary"
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},
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schema: [
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{
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enum: ["always", "always-multiline", "never"]
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}
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],
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messages: {
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expectedTestCons: "Expected newline between test and consequent of ternary expression.",
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expectedConsAlt: "Expected newline between consequent and alternate of ternary expression.",
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unexpectedTestCons: "Unexpected newline between test and consequent of ternary expression.",
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unexpectedConsAlt: "Unexpected newline between consequent and alternate of ternary expression."
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},
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fixable: "whitespace"
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},
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create(context) {
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const sourceCode = context.sourceCode;
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const option = context.options[0];
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const multiline = option !== "never";
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const allowSingleLine = option === "always-multiline";
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//--------------------------------------------------------------------------
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// Public
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//--------------------------------------------------------------------------
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return {
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ConditionalExpression(node) {
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const questionToken = sourceCode.getTokenAfter(node.test, astUtils.isNotClosingParenToken);
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const colonToken = sourceCode.getTokenAfter(node.consequent, astUtils.isNotClosingParenToken);
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const firstTokenOfTest = sourceCode.getFirstToken(node);
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const lastTokenOfTest = sourceCode.getTokenBefore(questionToken);
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const firstTokenOfConsequent = sourceCode.getTokenAfter(questionToken);
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const lastTokenOfConsequent = sourceCode.getTokenBefore(colonToken);
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const firstTokenOfAlternate = sourceCode.getTokenAfter(colonToken);
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const areTestAndConsequentOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfTest, firstTokenOfConsequent);
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const areConsequentAndAlternateOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfConsequent, firstTokenOfAlternate);
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const hasComments = !!sourceCode.getCommentsInside(node).length;
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if (!multiline) {
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if (!areTestAndConsequentOnSameLine) {
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context.report({
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node: node.test,
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loc: {
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start: firstTokenOfTest.loc.start,
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end: lastTokenOfTest.loc.end
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},
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messageId: "unexpectedTestCons",
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fix(fixer) {
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if (hasComments) {
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return null;
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}
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const fixers = [];
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const areTestAndQuestionOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfTest, questionToken);
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const areQuestionAndConsOnSameLine = astUtils.isTokenOnSameLine(questionToken, firstTokenOfConsequent);
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if (!areTestAndQuestionOnSameLine) {
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fixers.push(fixer.removeRange([lastTokenOfTest.range[1], questionToken.range[0]]));
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}
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if (!areQuestionAndConsOnSameLine) {
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fixers.push(fixer.removeRange([questionToken.range[1], firstTokenOfConsequent.range[0]]));
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}
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return fixers;
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}
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});
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}
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if (!areConsequentAndAlternateOnSameLine) {
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context.report({
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node: node.consequent,
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loc: {
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start: firstTokenOfConsequent.loc.start,
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end: lastTokenOfConsequent.loc.end
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},
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messageId: "unexpectedConsAlt",
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fix(fixer) {
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if (hasComments) {
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return null;
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}
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const fixers = [];
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const areConsAndColonOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfConsequent, colonToken);
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const areColonAndAltOnSameLine = astUtils.isTokenOnSameLine(colonToken, firstTokenOfAlternate);
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if (!areConsAndColonOnSameLine) {
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fixers.push(fixer.removeRange([lastTokenOfConsequent.range[1], colonToken.range[0]]));
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}
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if (!areColonAndAltOnSameLine) {
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fixers.push(fixer.removeRange([colonToken.range[1], firstTokenOfAlternate.range[0]]));
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}
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return fixers;
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}
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});
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}
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} else {
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if (allowSingleLine && node.loc.start.line === node.loc.end.line) {
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return;
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}
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if (areTestAndConsequentOnSameLine) {
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context.report({
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node: node.test,
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loc: {
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start: firstTokenOfTest.loc.start,
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end: lastTokenOfTest.loc.end
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},
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messageId: "expectedTestCons",
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fix: fixer => (hasComments ? null : (
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fixer.replaceTextRange(
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[
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lastTokenOfTest.range[1],
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questionToken.range[0]
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],
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"\n"
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)
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))
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});
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}
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if (areConsequentAndAlternateOnSameLine) {
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context.report({
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node: node.consequent,
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loc: {
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start: firstTokenOfConsequent.loc.start,
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end: lastTokenOfConsequent.loc.end
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},
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messageId: "expectedConsAlt",
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fix: (fixer => (hasComments ? null : (
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fixer.replaceTextRange(
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[
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lastTokenOfConsequent.range[1],
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colonToken.range[0]
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],
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"\n"
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)
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)))
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});
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}
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}
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}
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};
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}
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};
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