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app_vue/node_modules/eslint/lib/rules/id-match.js

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+/**
+ * @fileoverview Rule to flag non-matching identifiers
+ * @author Matthieu Larcher
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "require identifiers to match a specified regular expression",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/id-match"
+        },
+
+        schema: [
+            {
+                type: "string"
+            },
+            {
+                type: "object",
+                properties: {
+                    properties: {
+                        type: "boolean",
+                        default: false
+                    },
+                    onlyDeclarations: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoreDestructuring: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            notMatch: "Identifier '{{name}}' does not match the pattern '{{pattern}}'."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Options
+        //--------------------------------------------------------------------------
+        const pattern = context.options[0] || "^.+$",
+            regexp = new RegExp(pattern, "u");
+
+        const options = context.options[1] || {},
+            properties = !!options.properties,
+            onlyDeclarations = !!options.onlyDeclarations,
+            ignoreDestructuring = !!options.ignoreDestructuring;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
+        const reported = new Map();
+        const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
+        const DECLARATION_TYPES = new Set(["FunctionDeclaration", "VariableDeclarator"]);
+        const IMPORT_TYPES = new Set(["ImportSpecifier", "ImportNamespaceSpecifier", "ImportDefaultSpecifier"]);
+
+        /**
+         * 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);
+        }
+
+        /**
+         * Checks if a parent of a node is an ObjectPattern.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} if the node is inside an ObjectPattern
+         * @private
+         */
+        function isInsideObjectPattern(node) {
+            let { parent } = node;
+
+            while (parent) {
+                if (parent.type === "ObjectPattern") {
+                    return true;
+                }
+
+                parent = parent.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * 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 (!onlyDeclarations || DECLARATION_TYPES.has(effectiveParent.type)) &&
+                !ALLOWED_PARENT_TYPES.has(effectiveParent.type) && isInvalid(name);
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            if (!reported.has(node)) {
+                context.report({
+                    node,
+                    messageId: "notMatch",
+                    data: {
+                        name: node.name,
+                        pattern
+                    }
+                });
+                reported.set(node, true);
+            }
+        }
+
+        return {
+
+            Identifier(node) {
+                const name = node.name,
+                    parent = node.parent,
+                    effectiveParent = (parent.type === "MemberExpression") ? parent.parent : parent;
+
+                if (parent.type === "MemberExpression") {
+
+                    if (!properties) {
+                        return;
+                    }
+
+                    // Always check object names
+                    if (parent.object.type === "Identifier" &&
+                        parent.object.name === name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                    // Report AssignmentExpressions left side's assigned variable id
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                        effectiveParent.left.type === "MemberExpression" &&
+                        effectiveParent.left.property.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") {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+                    }
+
+                /*
+                 * Properties have their own rules, and
+                 * AssignmentPattern nodes can be treated like Properties:
+                 * e.g.: const { no_camelcased = false } = bar;
+                 */
+                } else if (parent.type === "Property" || parent.type === "AssignmentPattern") {
+
+                    if (parent.parent && parent.parent.type === "ObjectPattern") {
+                        if (parent.shorthand && parent.value.left && isInvalid(name)) {
+
+                            report(node);
+                        }
+
+                        const assignmentKeyEqualsValue = parent.key.name === parent.value.name;
+
+                        // prevent checking righthand side of destructured object
+                        if (!assignmentKeyEqualsValue && parent.key === node) {
+                            return;
+                        }
+
+                        const valueIsInvalid = parent.value.name && isInvalid(name);
+
+                        // ignore destructuring if the option is set, unless a new identifier is created
+                        if (valueIsInvalid && !(assignmentKeyEqualsValue && ignoreDestructuring)) {
+                            report(node);
+                        }
+                    }
+
+                    // never check properties or always ignore destructuring
+                    if (!properties || (ignoreDestructuring && isInsideObjectPattern(node))) {
+                        return;
+                    }
+
+                    // don't check right hand side of AssignmentExpression to prevent duplicate warnings
+                    if (parent.right !== node && shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+
+                // Check if it's an import specifier
+                } else if (IMPORT_TYPES.has(parent.type)) {
+
+                    // Report only if the local imported identifier is invalid
+                    if (parent.local && parent.local.name === node.name && isInvalid(name)) {
+                        report(node);
+                    }
+
+                // Report anything that is invalid that isn't a CallExpression
+                } else if (shouldReport(effectiveParent, name)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};