noConsecutiveBlankLinesRule.js
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"use strict";
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Lint = require("../lint");
var Rule = (function (_super) {
__extends(Rule, _super);
function Rule() {
_super.apply(this, arguments);
}
Rule.prototype.apply = function (sourceFile) {
return this.applyWithWalker(new NoConsecutiveBlankLinesWalker(sourceFile, this.getOptions()));
};
Rule.metadata = {
ruleName: "no-consecutive-blank-lines",
description: "Disallows more than one blank line in a row.",
rationale: "Helps maintain a readable style in your codebase.",
optionsDescription: "Not configurable.",
options: {},
optionExamples: ["true"],
type: "style",
};
Rule.FAILURE_STRING = "Consecutive blank lines are forbidden";
return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
var NoConsecutiveBlankLinesWalker = (function (_super) {
__extends(NoConsecutiveBlankLinesWalker, _super);
function NoConsecutiveBlankLinesWalker() {
_super.apply(this, arguments);
}
NoConsecutiveBlankLinesWalker.prototype.visitSourceFile = function (node) {
var _this = this;
_super.prototype.visitSourceFile.call(this, node);
var sourceFileText = node.getFullText();
var soureFileLines = sourceFileText.split(/\n/);
var blankLineIndexes = [];
soureFileLines.forEach(function (txt, i) {
if (txt.trim() === "") {
blankLineIndexes.push(i);
}
});
var sequences = [];
var lastVal = -2;
for (var _i = 0, blankLineIndexes_1 = blankLineIndexes; _i < blankLineIndexes_1.length; _i++) {
var line = blankLineIndexes_1[_i];
line > lastVal + 1 ? sequences.push([line]) : sequences[sequences.length - 1].push(line);
lastVal = line;
}
sequences
.filter(function (arr) { return arr.length > 1; }).map(function (arr) { return arr[0]; })
.forEach(function (startLineNum) {
var startCharPos = node.getPositionOfLineAndCharacter(startLineNum + 1, 0);
_this.addFailure(_this.createFailure(startCharPos, 1, Rule.FAILURE_STRING));
});
};
return NoConsecutiveBlankLinesWalker;
}(Lint.SkippableTokenAwareRuleWalker));