1 files changed, 170 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/max-statements.js b/tools/node_modules/eslint/lib/rules/max-statements.js
new file mode 100644
index 0000000000..f98aa3a21d
--- /dev/null
+++ b/tools/node_modules/eslint/lib/rules/max-statements.js
@@ -0,0 +1,170 @@
+/**
+ * @fileoverview A rule to set the maximum number of statements in a function.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const lodash = require("lodash");
+
+const astUtils = require("../ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "enforce a maximum number of statements allowed in function blocks",
+            category: "Stylistic Issues",
+            recommended: false
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    ignoreTopLevelFunctions: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [],
+            option = context.options[0],
+            ignoreTopLevelFunctions = context.options[1] && context.options[1].ignoreTopLevelFunctions || false,
+            topLevelFunctions = [];
+        let maxStatements = 10;
+
+        if (typeof option === "object" && option.hasOwnProperty("maximum") && typeof option.maximum === "number") {
+            maxStatements = option.maximum;
+        }
+        if (typeof option === "object" && option.hasOwnProperty("max") && typeof option.max === "number") {
+            maxStatements = option.max;
+        }
+        if (typeof option === "number") {
+            maxStatements = option;
+        }
+
+        /**
+         * Reports a node if it has too many statements
+         * @param {ASTNode} node node to evaluate
+         * @param {int} count Number of statements in node
+         * @param {int} max Maximum number of statements allowed
+         * @returns {void}
+         * @private
+         */
+        function reportIfTooManyStatements(node, count, max) {
+            if (count > max) {
+                const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(node));
+
+                context.report({
+                    node,
+                    message: "{{name}} has too many statements ({{count}}). Maximum allowed is {{max}}.",
+                    data: { name, count, max }
+                });
+            }
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push(0);
+        }
+
+        /**
+         * Evaluate the node at the end of function
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function endFunction(node) {
+            const count = functionStack.pop();
+
+            if (ignoreTopLevelFunctions && functionStack.length === 0) {
+                topLevelFunctions.push({ node, count });
+            } else {
+                reportIfTooManyStatements(node, count, maxStatements);
+            }
+        }
+
+        /**
+         * Increment the count of the functions
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function countStatements(node) {
+            functionStack[functionStack.length - 1] += node.body.length;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+
+            BlockStatement: countStatements,
+
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+
+            "Program:exit"() {
+                if (topLevelFunctions.length === 1) {
+                    return;
+                }
+
+                topLevelFunctions.forEach(element => {
+                    const count = element.count;
+                    const node = element.node;
+
+                    reportIfTooManyStatements(node, count, maxStatements);
+                });
+            }
+        };
+
+    }
+};