stylelint/dist/rules/number-leading-zero/index.js

A mighty, modern CSS linter.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.messages = exports.ruleName = undefined;

exports.default = function (expectation) {
  return function (root, result) {
    var validOptions = (0, _utils.validateOptions)(result, ruleName, {
      actual: expectation,
      possible: ["always", "never"]
    });
    if (!validOptions) {
      return;
    }

    root.walkAtRules(function (atRule) {
      if (atRule.name.toLowerCase() === "import") {
        return;
      }

      check(atRule, atRule.params, _utils.atRuleParamIndex);
    });

    root.walkDecls(function (decl) {
      return check(decl, decl.value, _utils.declarationValueIndex);
    });

    function check(node, value, getIndex) {
      // Get out quickly if there are no periods
      if (value.indexOf(".") === -1) {
        return;
      }

      (0, _postcssValueParser2.default)(value).walk(function (valueNode) {
        // Ignore `url` function
        if (valueNode.type === "function" && valueNode.value.toLowerCase() === "url") {
          return false;
        }

        // Ignore strings, comments, etc
        if (valueNode.type !== "word") {
          return;
        }

        // Check leading zero
        if (expectation === "always") {
          var match = /(?:\D|^)(\.\d+)/.exec(valueNode.value);

          if (match === null) {
            return;
          }

          // The regexp above consists of 2 capturing groups (or capturing parentheses).
          // We need the index of the second group. This makes sanse when we have "-.5" as an input
          // for regex. And we need the index of ".5".
          var capturingGroupIndex = match[0].length - match[1].length;
          complain(messages.expected, node, getIndex(node) + valueNode.sourceIndex + match.index + capturingGroupIndex);
        }

        if (expectation === "never") {
          var _match = /(?:\D|^)(0+\.\d+)/.exec(valueNode.value);

          if (_match === null) {
            return;
          }

          var _capturingGroupIndex = _match[0].length - _match[1].length;
          complain(messages.rejected, node, getIndex(node) + valueNode.sourceIndex + _match.index + _capturingGroupIndex);
        }
      });
    }

    function complain(message, node, index) {
      (0, _utils.report)({
        result: result,
        ruleName: ruleName,
        message: message,
        node: node,
        index: index
      });
    }
  };
};

var _utils = require("../../utils");

var _postcssValueParser = require("postcss-value-parser");

var _postcssValueParser2 = _interopRequireDefault(_postcssValueParser);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var ruleName = exports.ruleName = "number-leading-zero";

var messages = exports.messages = (0, _utils.ruleMessages)(ruleName, {
  expected: "Expected a leading zero",
  rejected: "Unexpected leading zero"
});