Blame view
node_modules/eslint/lib/rules/space-after-keywords.js
3.76 KB
c39994410
wip converting to...
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 |
/**
* @fileoverview Rule to enforce the number of spaces after certain keywords
* @author Nick Fisher
* @copyright 2014 Nick Fisher. All rights reserved.
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
// unless the first option is `"never"`, then a space is required
var requiresSpace = context.options[0] !== "never";
/**
* Check if the separation of two adjacent tokens meets the spacing rules, and report a problem if not.
*
* @param {ASTNode} node The node to which the potential problem belongs.
* @param {Token} left The first token.
* @param {Token} right The second token
* @returns {void}
*/
function checkTokens(node, left, right) {
if (right.type !== "Punctuator") {
return;
}
var hasSpace = left.range[1] < right.range[0],
value = left.value;
if (hasSpace !== requiresSpace) {
context.report({
node: node,
loc: left.loc.end,
message: "Keyword \"{{value}}\" must {{not}}be followed by whitespace.",
data: {
value: value,
not: requiresSpace ? "" : "not "
},
fix: function(fixer) {
if (requiresSpace) {
return fixer.insertTextAfter(left, " ");
} else {
return fixer.removeRange([left.range[1], right.range[0]]);
}
}
});
} else if (left.loc.end.line !== right.loc.start.line) {
context.report({
node: node,
loc: left.loc.end,
message: "Keyword \"{{value}}\" must not be followed by a newline.",
data: {
value: value
},
fix: function(fixer) {
var text = "";
if (requiresSpace) {
text = " ";
}
return fixer.replaceTextRange([left.range[1], right.range[0]], text);
}
});
}
}
/**
* Check if the given node (`if`, `for`, `while`, etc), has the correct spacing after it.
* @param {ASTNode} node The node to check.
* @returns {void}
*/
function check(node) {
var tokens = context.getFirstTokens(node, 2);
checkTokens(node, tokens[0], tokens[1]);
}
return {
"IfStatement": function(node) {
check(node);
// check the `else`
if (node.alternate && node.alternate.type !== "IfStatement") {
checkTokens(node.alternate, context.getTokenBefore(node.alternate), context.getFirstToken(node.alternate));
}
},
"ForStatement": check,
"ForOfStatement": check,
"ForInStatement": check,
"WhileStatement": check,
"DoWhileStatement": function(node) {
check(node);
// check the `while`
var whileTokens = context.getTokensAfter(node.body, 2);
checkTokens(node, whileTokens[0], whileTokens[1]);
},
"SwitchStatement": check,
"TryStatement": function(node) {
check(node);
// check the `finally`
if (node.finalizer) {
checkTokens(node.finalizer, context.getTokenBefore(node.finalizer), context.getFirstToken(node.finalizer));
}
},
"CatchClause": check,
"WithStatement": check
};
};
module.exports.schema = [
{
"enum": ["always", "never"]
}
];
|