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49 lines
1.3 KiB
49 lines
1.3 KiB
/**
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* @fileoverview Rule to flag octal escape sequences in string literals.
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* @author Ian Christian Myers
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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docs: {
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description: "disallow octal escape sequences in string literals",
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category: "Best Practices",
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recommended: false
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},
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schema: []
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},
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create: function(context) {
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return {
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Literal: function(node) {
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if (typeof node.value !== "string") {
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return;
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}
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var match = node.raw.match(/^([^\\]|\\[^0-7])*\\([0-3][0-7]{1,2}|[4-7][0-7]|[0-7])/),
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octalDigit;
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if (match) {
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octalDigit = match[2];
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// \0 is actually not considered an octal
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if (match[2] !== "0" || typeof match[3] !== "undefined") {
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context.report(node, "Don't use octal: '\\{{octalDigit}}'. Use '\\u....' instead.",
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{ octalDigit: octalDigit });
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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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