mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.7 KiB
83 lines
2.7 KiB
/**
|
|
* @fileoverview Rule to check the spacing around the * in generator functions.
|
|
* @author Jamund Ferguson
|
|
* @copyright 2015 Brandon Mills. All rights reserved.
|
|
* @copyright 2014 Jamund Ferguson. All rights reserved.
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = function(context) {
|
|
|
|
var mode = {
|
|
before: { before: true, after: false },
|
|
after: { before: false, after: true },
|
|
both: { before: true, after: true },
|
|
neither: { before: false, after: false }
|
|
}[context.options[0] || "before"];
|
|
|
|
/**
|
|
* Checks the spacing between two tokens before or after the star token.
|
|
* @param {string} side Either "before" or "after".
|
|
* @param {Token} leftToken `function` keyword token if side is "before", or
|
|
* star token if side is "after".
|
|
* @param {Token} rightToken Star token if side is "before", or identifier
|
|
* token if side is "after".
|
|
* @returns {void}
|
|
*/
|
|
function checkSpacing(side, leftToken, rightToken) {
|
|
if (!!(rightToken.range[0] - leftToken.range[1]) !== mode[side]) {
|
|
context.report(
|
|
leftToken.value === "*" ? leftToken : rightToken,
|
|
"{{type}} space {{side}} *.",
|
|
{
|
|
type: mode[side] ? "Missing" : "Unexpected",
|
|
side: side
|
|
}
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Enforces the spacing around the star if node is a generator function.
|
|
* @param {ASTNode} node A function expression or declaration node.
|
|
* @returns {void}
|
|
*/
|
|
function checkFunction(node) {
|
|
var isMethod, starToken, tokenBefore, tokenAfter;
|
|
|
|
if (!node.generator) {
|
|
return;
|
|
}
|
|
|
|
isMethod = !!context.getAncestors().pop().method;
|
|
|
|
if (isMethod) {
|
|
starToken = context.getTokenBefore(node, 1);
|
|
} else {
|
|
starToken = context.getFirstToken(node, 1);
|
|
}
|
|
|
|
// Only check before when preceded by `function` keyword
|
|
tokenBefore = context.getTokenBefore(starToken);
|
|
if (tokenBefore.value === "function") {
|
|
checkSpacing("before", tokenBefore, starToken);
|
|
}
|
|
|
|
// Only check after when followed by an identifier
|
|
tokenAfter = context.getTokenAfter(starToken);
|
|
if (tokenAfter.type === "Identifier") {
|
|
checkSpacing("after", starToken, tokenAfter);
|
|
}
|
|
}
|
|
|
|
return {
|
|
"FunctionDeclaration": checkFunction,
|
|
"FunctionExpression": checkFunction
|
|
};
|
|
|
|
};
|
|
|