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node_modules/eslint/lib/rules/id-match.js
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/**
* @fileoverview Rule to flag non-matching identifiers
* @author Matthieu Larcher
* @copyright 2015 Matthieu Larcher. All rights reserved.
* See LICENSE in root directory for full license.
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
//--------------------------------------------------------------------------
// Helpers
//--------------------------------------------------------------------------
var pattern = context.options[0] || "^.+$",
regexp = new RegExp(pattern);
var options = context.options[1] || {},
properties = options.properties;
// cast to boolean and default to false
properties = !!properties;
/**
* Checks if a string matches the provided pattern
* @param {String} name The string to check.
* @returns {boolean} if the string is a match
* @private
*/
function isInvalid(name) {
return !regexp.test(name);
}
/**
* Verifies if we should report an error or not based on the effective
* parent node and the identifier name.
* @param {ASTNode} effectiveParent The effective parent node of the node to be reported
* @param {String} name The identifier name of the identifier node
* @returns {boolean} whether an error should be reported or not
*/
function shouldReport(effectiveParent, name) {
return effectiveParent.type !== "CallExpression"
&& effectiveParent.type !== "NewExpression" &&
isInvalid(name);
}
/**
* Reports an AST node as a rule violation.
* @param {ASTNode} node The node to report.
* @returns {void}
* @private
*/
function report(node) {
context.report(node, "Identifier '{{name}}' does not match the pattern '{{pattern}}'.", {
name: node.name,
pattern: pattern
});
}
return {
"Identifier": function(node) {
var name = node.name,
effectiveParent = (node.parent.type === "MemberExpression") ? node.parent.parent : node.parent;
// MemberExpressions get special rules
if (node.parent.type === "MemberExpression") {
// return early if properties is false
if (!properties) {
return;
}
// Always check object names
if (node.parent.object.type === "Identifier" &&
node.parent.object.name === node.name) {
if (isInvalid(name)) {
report(node);
}
// Report AssignmentExpressions only if they are the left side of the assignment
} else if (effectiveParent.type === "AssignmentExpression" &&
(effectiveParent.right.type !== "MemberExpression" ||
effectiveParent.left.type === "MemberExpression" &&
effectiveParent.left.property.name === node.name)) {
if (isInvalid(name)) {
report(node);
}
}
// Properties have their own rules
} else if (node.parent.type === "Property") {
// return early if properties is false
if (!properties) {
return;
}
if (shouldReport(effectiveParent, name)) {
report(node);
}
// Report anything that is a match and not a CallExpression
} else if (shouldReport(effectiveParent, name)) {
report(node);
}
}
};
};
module.exports.schema = [
{
"type": "string"
},
{
"type": "object",
"properties": {
"properties": {
"type": "boolean"
}
}
}
];
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