'use strict';

var _ExportMap = require('../ExportMap');

var _ExportMap2 = _interopRequireDefault(_ExportMap);

var _importDeclaration = require('../importDeclaration');

var _importDeclaration2 = _interopRequireDefault(_importDeclaration);

var _declaredScope = require('eslint-module-utils/declaredScope');

var _declaredScope2 = _interopRequireDefault(_declaredScope);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

module.exports = {
  meta: {
    schema: [{
      'type': 'object',
      'properties': {
        'allowComputed': {
          'description': 'If `false`, will report computed (and thus, un-lintable) references ' + 'to namespace members.',
          'type': 'boolean',
          'default': false
        }
      },
      'additionalProperties': false
    }]
  },

  create: function namespaceRule(context) {

    // read options
    var _ref = context.options[0] || {},
        _ref$allowComputed = _ref.allowComputed;

    const allowComputed = _ref$allowComputed === undefined ? false : _ref$allowComputed;


    const namespaces = new Map();

    function makeMessage(last, namepath) {
      return `'${last.name}' not found in` + (namepath.length > 1 ? ' deeply ' : ' ') + `imported namespace '${namepath.join('.')}'.`;
    }

    return {

      // pick up all imports at body entry time, to properly respect hoisting
      'Program': function (_ref2) {
        let body = _ref2.body;

        function processBodyStatement(declaration) {
          if (declaration.type !== 'ImportDeclaration') return;

          if (declaration.specifiers.length === 0) return;

          const imports = _ExportMap2.default.get(declaration.source.value, context);
          if (imports == null) return null;

          if (imports.errors.length) {
            imports.reportErrors(context, declaration);
            return;
          }

          for (let specifier of declaration.specifiers) {
            switch (specifier.type) {
              case 'ImportNamespaceSpecifier':
                if (!imports.size) {
                  context.report(specifier, `No exported names found in module '${declaration.source.value}'.`);
                }
                namespaces.set(specifier.local.name, imports);
                break;
              case 'ImportDefaultSpecifier':
              case 'ImportSpecifier':
                {
                  const meta = imports.get(
                  // default to 'default' for default http://i.imgur.com/nj6qAWy.jpg
                  specifier.imported ? specifier.imported.name : 'default');
                  if (!meta || !meta.namespace) break;
                  namespaces.set(specifier.local.name, meta.namespace);
                  break;
                }
            }
          }
        }
        body.forEach(processBodyStatement);
      },

      // same as above, but does not add names to local map
      'ExportNamespaceSpecifier': function (namespace) {
        var declaration = (0, _importDeclaration2.default)(context);

        var imports = _ExportMap2.default.get(declaration.source.value, context);
        if (imports == null) return null;

        if (imports.errors.length) {
          imports.reportErrors(context, declaration);
          return;
        }

        if (!imports.size) {
          context.report(namespace, `No exported names found in module '${declaration.source.value}'.`);
        }
      },

      // todo: check for possible redefinition

      'MemberExpression': function (dereference) {
        if (dereference.object.type !== 'Identifier') return;
        if (!namespaces.has(dereference.object.name)) return;

        if (dereference.parent.type === 'AssignmentExpression' && dereference.parent.left === dereference) {
          context.report(dereference.parent, `Assignment to member of namespace '${dereference.object.name}'.`);
        }

        // go deep
        var namespace = namespaces.get(dereference.object.name);
        var namepath = [dereference.object.name];
        // while property is namespace and parent is member expression, keep validating
        while (namespace instanceof _ExportMap2.default && dereference.type === 'MemberExpression') {

          if (dereference.computed) {
            if (!allowComputed) {
              context.report(dereference.property, 'Unable to validate computed reference to imported namespace \'' + dereference.object.name + '\'.');
            }
            return;
          }

          if (!namespace.has(dereference.property.name)) {
            context.report(dereference.property, makeMessage(dereference.property, namepath));
            break;
          }

          const exported = namespace.get(dereference.property.name);
          if (exported == null) return;

          // stash and pop
          namepath.push(dereference.property.name);
          namespace = exported.namespace;
          dereference = dereference.parent;
        }
      },

      'VariableDeclarator': function (_ref3) {
        let id = _ref3.id,
            init = _ref3.init;

        if (init == null) return;
        if (init.type !== 'Identifier') return;
        if (!namespaces.has(init.name)) return;

        // check for redefinition in intermediate scopes
        if ((0, _declaredScope2.default)(context, init.name) !== 'module') return;

        // DFS traverse child namespaces
        function testKey(pattern, namespace) {
          let path = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [init.name];

          if (!(namespace instanceof _ExportMap2.default)) return;

          if (pattern.type !== 'ObjectPattern') return;

          for (let property of pattern.properties) {

            if (property.key.type !== 'Identifier') {
              context.report({
                node: property,
                message: 'Only destructure top-level names.'
              });
              continue;
            }

            if (!namespace.has(property.key.name)) {
              context.report({
                node: property,
                message: makeMessage(property.key, path)
              });
              continue;
            }

            path.push(property.key.name);
            testKey(property.value, namespace.get(property.key.name).namespace, path);
            path.pop();
          }
        }

        testKey(id, namespaces.get(init.name));
      }
    };
  }
};
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Exports from '../ExportMap'\nimport importDeclaration from '../importDeclaration'\nimport declaredScope from 'eslint-module-utils/declaredScope'\n\nmodule.exports = {\n  meta: {\n    schema: [\n      {\n        'type': 'object',\n        'properties': {\n          'allowComputed': {\n            'description':\n              'If `false`, will report computed (and thus, un-lintable) references ' +\n              'to namespace members.',\n            'type': 'boolean',\n            'default': false,\n          },\n        },\n        'additionalProperties': false,\n      },\n    ],\n  },\n\n  create: function namespaceRule(context) {\n\n    // read options\n    const {\n      allowComputed = false,\n    } = context.options[0] || {}\n\n    const namespaces = new Map()\n\n    function makeMessage(last, namepath) {\n       return `'${last.name}' not found in` +\n              (namepath.length > 1 ? ' deeply ' : ' ') +\n              `imported namespace '${namepath.join('.')}'.`\n    }\n\n    return {\n\n      // pick up all imports at body entry time, to properly respect hoisting\n      'Program': function ({ body }) {\n        function processBodyStatement(declaration) {\n          if (declaration.type !== 'ImportDeclaration') return\n\n          if (declaration.specifiers.length === 0) return\n\n          const imports = Exports.get(declaration.source.value, context)\n          if (imports == null) return null\n\n          if (imports.errors.length) {\n            imports.reportErrors(context, declaration)\n            return\n          }\n\n          for (let specifier of declaration.specifiers) {\n            switch (specifier.type) {\n              case 'ImportNamespaceSpecifier':\n                if (!imports.size) {\n                  context.report(specifier,\n                    `No exported names found in module '${declaration.source.value}'.`)\n                }\n                namespaces.set(specifier.local.name, imports)\n                break\n              case 'ImportDefaultSpecifier':\n              case 'ImportSpecifier': {\n                const meta = imports.get(\n                  // default to 'default' for default http://i.imgur.com/nj6qAWy.jpg\n                  specifier.imported ? specifier.imported.name : 'default')\n                if (!meta || !meta.namespace) break\n                namespaces.set(specifier.local.name, meta.namespace)\n                break\n              }\n            }\n          }\n        }\n        body.forEach(processBodyStatement)\n      },\n\n      // same as above, but does not add names to local map\n      'ExportNamespaceSpecifier': function (namespace) {\n        var declaration = importDeclaration(context)\n\n        var imports = Exports.get(declaration.source.value, context)\n        if (imports == null) return null\n\n        if (imports.errors.length) {\n          imports.reportErrors(context, declaration)\n          return\n        }\n\n        if (!imports.size) {\n          context.report(namespace,\n            `No exported names found in module '${declaration.source.value}'.`)\n        }\n      },\n\n      // todo: check for possible redefinition\n\n      'MemberExpression': function (dereference) {\n        if (dereference.object.type !== 'Identifier') return\n        if (!namespaces.has(dereference.object.name)) return\n\n        if (dereference.parent.type === 'AssignmentExpression' &&\n            dereference.parent.left === dereference) {\n            context.report(dereference.parent,\n                `Assignment to member of namespace '${dereference.object.name}'.`)\n        }\n\n        // go deep\n        var namespace = namespaces.get(dereference.object.name)\n        var namepath = [dereference.object.name]\n        // while property is namespace and parent is member expression, keep validating\n        while (namespace instanceof Exports &&\n               dereference.type === 'MemberExpression') {\n\n          if (dereference.computed) {\n            if (!allowComputed) {\n              context.report(dereference.property,\n                'Unable to validate computed reference to imported namespace \\'' +\n                dereference.object.name + '\\'.')\n            }\n            return\n          }\n\n          if (!namespace.has(dereference.property.name)) {\n            context.report(\n              dereference.property,\n              makeMessage(dereference.property, namepath))\n            break\n          }\n\n          const exported = namespace.get(dereference.property.name)\n          if (exported == null) return\n\n          // stash and pop\n          namepath.push(dereference.property.name)\n          namespace = exported.namespace\n          dereference = dereference.parent\n        }\n\n      },\n\n      'VariableDeclarator': function ({ id, init }) {\n        if (init == null) return\n        if (init.type !== 'Identifier') return\n        if (!namespaces.has(init.name)) return\n\n        // check for redefinition in intermediate scopes\n        if (declaredScope(context, init.name) !== 'module') return\n\n        // DFS traverse child namespaces\n        function testKey(pattern, namespace, path = [init.name]) {\n          if (!(namespace instanceof Exports)) return\n\n          if (pattern.type !== 'ObjectPattern') return\n\n          for (let property of pattern.properties) {\n\n            if (property.key.type !== 'Identifier') {\n              context.report({\n                node: property,\n                message: 'Only destructure top-level names.',\n              })\n              continue\n            }\n\n            if (!namespace.has(property.key.name)) {\n              context.report({\n                node: property,\n                message: makeMessage(property.key, path),\n              })\n              continue\n            }\n\n            path.push(property.key.name)\n            testKey(property.value, namespace.get(property.key.name).namespace, path)\n            path.pop()\n          }\n        }\n\n        testKey(id, namespaces.get(init.name))\n      },\n    }\n  },\n}\n"]}