92 lines
2.7 KiB
Plaintext
92 lines
2.7 KiB
Plaintext
'use strict';
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var utils = require('../utils.js');
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require('eslint-visitor-keys');
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require('espree');
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require('estraverse');
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var yieldStarSpacing = utils.createRule({
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name: "yield-star-spacing",
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package: "js",
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meta: {
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type: "layout",
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docs: {
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description: "Require or disallow spacing around the `*` in `yield*` expressions"
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},
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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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type: "string",
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enum: ["before", "after", "both", "neither"]
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},
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{
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type: "object",
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properties: {
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before: { type: "boolean" },
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after: { type: "boolean" }
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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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],
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messages: {
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missingBefore: "Missing space before *.",
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missingAfter: "Missing space after *.",
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unexpectedBefore: "Unexpected space before *.",
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unexpectedAfter: "Unexpected space after *."
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}
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},
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create(context) {
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const sourceCode = context.sourceCode;
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const mode = function(option = "after") {
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if (typeof option === "string") {
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return {
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before: { before: true, after: false },
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after: { before: false, after: true },
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both: { before: true, after: true },
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neither: { before: false, after: false }
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}[option];
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}
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return option;
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}(context.options[0]);
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function checkSpacing(side, leftToken, rightToken) {
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if (sourceCode.isSpaceBetweenTokens(leftToken, rightToken) !== mode[side]) {
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const after = leftToken.value === "*";
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const spaceRequired = mode[side];
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const node = after ? leftToken : rightToken;
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const messageId = spaceRequired ? side === "before" ? "missingBefore" : "missingAfter" : side === "before" ? "unexpectedBefore" : "unexpectedAfter";
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context.report({
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node,
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messageId,
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fix(fixer) {
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if (spaceRequired) {
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if (after)
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return fixer.insertTextAfter(node, " ");
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return fixer.insertTextBefore(node, " ");
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}
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return fixer.removeRange([leftToken.range[1], rightToken.range[0]]);
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}
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});
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}
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}
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function checkExpression(node) {
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if (!("delegate" in node && node.delegate))
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return;
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const tokens = sourceCode.getFirstTokens(node, 3);
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const yieldToken = tokens[0];
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const starToken = tokens[1];
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const nextToken = tokens[2];
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checkSpacing("before", yieldToken, starToken);
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checkSpacing("after", starToken, nextToken);
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}
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return {
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YieldExpression: checkExpression
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};
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}
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});
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module.exports = yieldStarSpacing;
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