91 lines
3.8 KiB
JavaScript
91 lines
3.8 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const utils_1 = require("../utils");
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const mention_1 = require("../utils/mention");
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const regexp_ast_1 = require("../utils/regexp-ast");
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exports.default = (0, utils_1.createRule)("prefer-question-quantifier", {
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meta: {
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docs: {
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description: "enforce using `?` quantifier",
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category: "Stylistic Issues",
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recommended: true,
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},
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fixable: "code",
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schema: [],
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messages: {
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unexpected: "Unexpected quantifier '{{expr}}'. Use '?' instead.",
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unexpectedGroup: "Unexpected group {{expr}}. Use '{{instead}}' instead.",
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},
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type: "suggestion",
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},
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create(context) {
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function createVisitor({ node, getRegexpLocation, fixReplaceQuant, fixReplaceNode, }) {
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return {
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onQuantifierEnter(qNode) {
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if (qNode.min === 0 && qNode.max === 1) {
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const [startOffset, endOffset] = (0, regexp_ast_1.getQuantifierOffsets)(qNode);
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const text = qNode.raw.slice(startOffset, endOffset);
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if (text !== "?") {
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context.report({
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node,
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loc: getRegexpLocation(qNode, [
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startOffset,
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endOffset,
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]),
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messageId: "unexpected",
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data: {
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expr: text,
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},
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fix: fixReplaceQuant(qNode, "?"),
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});
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}
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}
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},
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onGroupEnter(gNode) {
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const lastAlt = gNode.alternatives[gNode.alternatives.length - 1];
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if (!lastAlt.elements.length) {
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const alternatives = gNode.alternatives.slice(0, -1);
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while (alternatives.length > 0) {
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if (!alternatives[alternatives.length - 1].elements
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.length) {
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alternatives.pop();
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continue;
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}
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break;
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}
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if (!alternatives.length) {
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return;
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}
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let reportNode = gNode;
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const instead = `(?:${alternatives
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.map((ne) => ne.raw)
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.join("|")})?`;
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if (gNode.parent.type === "Quantifier") {
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if (gNode.parent.greedy &&
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gNode.parent.min === 0 &&
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gNode.parent.max === 1) {
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reportNode = gNode.parent;
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}
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else {
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return;
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}
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}
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context.report({
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node,
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loc: getRegexpLocation(reportNode),
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messageId: "unexpectedGroup",
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data: {
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expr: (0, mention_1.mention)(reportNode),
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instead,
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},
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fix: fixReplaceNode(reportNode, instead),
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});
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}
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},
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};
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}
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return (0, utils_1.defineRegexpVisitor)(context, {
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createVisitor,
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});
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},
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});
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