--- /dev/null
+"use strict";
+
+const declarationValueIndex = require("../../utils/declarationValueIndex");
+const isStandardSyntaxDeclaration = require("../../utils/isStandardSyntaxDeclaration");
+const report = require("../../utils/report");
+const ruleMessages = require("../../utils/ruleMessages");
+const validateOptions = require("../../utils/validateOptions");
+const whitespaceChecker = require("../../utils/whitespaceChecker");
+
+const ruleName = "declaration-colon-newline-after";
+
+const messages = ruleMessages(ruleName, {
+ expectedAfter: () => 'Expected newline after ":"',
+ expectedAfterMultiLine: () =>
+ 'Expected newline after ":" with a multi-line declaration'
+});
+
+const rule = function(expectation) {
+ const checker = whitespaceChecker("newline", expectation, messages);
+ return (root, result) => {
+ const validOptions = validateOptions(result, ruleName, {
+ actual: expectation,
+ possible: ["always", "always-multi-line"]
+ });
+ if (!validOptions) {
+ return;
+ }
+
+ root.walkDecls(decl => {
+ if (!isStandardSyntaxDeclaration(decl)) {
+ return;
+ }
+
+ // Get the raw prop, and only the prop
+ const endOfPropIndex =
+ declarationValueIndex(decl) + (decl.raws.between || "").length - 1;
+
+ // The extra characters tacked onto the end ensure that there is a character to check
+ // after the colon. Otherwise, with `background:pink` the character after the
+ const propPlusColon = decl.toString().slice(0, endOfPropIndex) + "xxx";
+
+ for (let i = 0, l = propPlusColon.length; i < l; i++) {
+ if (propPlusColon[i] !== ":") {
+ continue;
+ }
+ const indexToCheck =
+ propPlusColon.substr(propPlusColon[i], 3) === "/*"
+ ? propPlusColon.indexOf("*/", i) + 1
+ : i;
+
+ checker.afterOneOnly({
+ source: propPlusColon,
+ index: indexToCheck,
+ lineCheckStr: decl.value,
+ err: m => {
+ report({
+ message: m,
+ node: decl,
+ index: indexToCheck,
+ result,
+ ruleName
+ });
+ }
+ });
+ }
+ });
+ };
+};
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+module.exports = rule;