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node_modules.graphql.execution.values.js Maven / Gradle / Ivy

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
/**
 *  Copyright (c) 2015, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 */

exports.getVariableValues = getVariableValues;
exports.getArgumentValues = getArgumentValues;
exports.getDirectiveValues = getDirectiveValues;

var _iterall = require('iterall');

var _error = require('../error');

var _find = require('../jsutils/find');

var _find2 = _interopRequireDefault(_find);

var _invariant = require('../jsutils/invariant');

var _invariant2 = _interopRequireDefault(_invariant);

var _isNullish = require('../jsutils/isNullish');

var _isNullish2 = _interopRequireDefault(_isNullish);

var _isInvalid = require('../jsutils/isInvalid');

var _isInvalid2 = _interopRequireDefault(_isInvalid);

var _keyMap = require('../jsutils/keyMap');

var _keyMap2 = _interopRequireDefault(_keyMap);

var _typeFromAST = require('../utilities/typeFromAST');

var _valueFromAST = require('../utilities/valueFromAST');

var _isValidJSValue = require('../utilities/isValidJSValue');

var _isValidLiteralValue = require('../utilities/isValidLiteralValue');

var _kinds = require('../language/kinds');

var Kind = _interopRequireWildcard(_kinds);

var _printer = require('../language/printer');

var _definition = require('../type/definition');

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

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

/**
 * Prepares an object map of variableValues of the correct type based on the
 * provided variable definitions and arbitrary input. If the input cannot be
 * parsed to match the variable definitions, a GraphQLError will be thrown.
 */
function getVariableValues(schema, varDefNodes, inputs) {
  var coercedValues = Object.create(null);
  for (var i = 0; i < varDefNodes.length; i++) {
    var varDefNode = varDefNodes[i];
    var varName = varDefNode.variable.name.value;
    var varType = (0, _typeFromAST.typeFromAST)(schema, varDefNode.type);
    if (!(0, _definition.isInputType)(varType)) {
      throw new _error.GraphQLError('Variable "$' + varName + '" expected value of type ' + ('"' + (0, _printer.print)(varDefNode.type) + '" which cannot be used as an input type.'), [varDefNode.type]);
    }

    var value = inputs[varName];
    if ((0, _isInvalid2.default)(value)) {
      var defaultValue = varDefNode.defaultValue;
      if (defaultValue) {
        coercedValues[varName] = (0, _valueFromAST.valueFromAST)(defaultValue, varType);
      }
      if (varType instanceof _definition.GraphQLNonNull) {
        throw new _error.GraphQLError('Variable "$' + varName + '" of required type ' + ('"' + String(varType) + '" was not provided.'), [varDefNode]);
      }
    } else {
      var errors = (0, _isValidJSValue.isValidJSValue)(value, varType);
      if (errors.length) {
        var message = errors ? '\n' + errors.join('\n') : '';
        throw new _error.GraphQLError('Variable "$' + varName + '" got invalid value ' + (JSON.stringify(value) + '.' + message), [varDefNode]);
      }

      var coercedValue = coerceValue(varType, value);
      !!(0, _isInvalid2.default)(coercedValue) ? (0, _invariant2.default)(0, 'Should have reported error.') : void 0;
      coercedValues[varName] = coercedValue;
    }
  }
  return coercedValues;
}

/**
 * Prepares an object map of argument values given a list of argument
 * definitions and list of argument AST nodes.
 */
function getArgumentValues(def, node, variableValues) {
  var argDefs = def.args;
  var argNodes = node.arguments;
  if (!argDefs || !argNodes) {
    return {};
  }
  var coercedValues = Object.create(null);
  var argNodeMap = (0, _keyMap2.default)(argNodes, function (arg) {
    return arg.name.value;
  });
  for (var i = 0; i < argDefs.length; i++) {
    var argDef = argDefs[i];
    var name = argDef.name;
    var argType = argDef.type;
    var argumentNode = argNodeMap[name];
    var defaultValue = argDef.defaultValue;
    if (!argumentNode) {
      if (!(0, _isInvalid2.default)(defaultValue)) {
        coercedValues[name] = defaultValue;
      } else if (argType instanceof _definition.GraphQLNonNull) {
        throw new _error.GraphQLError('Argument "' + name + '" of required type ' + ('"' + String(argType) + '" was not provided.'), [node]);
      }
    } else if (argumentNode.value.kind === Kind.VARIABLE) {
      var variableName = argumentNode.value.name.value;
      if (variableValues && !(0, _isInvalid2.default)(variableValues[variableName])) {
        // Note: this does not check that this variable value is correct.
        // This assumes that this query has been validated and the variable
        // usage here is of the correct type.
        coercedValues[name] = variableValues[variableName];
      } else if (!(0, _isInvalid2.default)(defaultValue)) {
        coercedValues[name] = defaultValue;
      } else if (argType instanceof _definition.GraphQLNonNull) {
        throw new _error.GraphQLError('Argument "' + name + '" of required type "' + String(argType) + '" was ' + ('provided the variable "$' + variableName + '" which was not provided ') + 'a runtime value.', [argumentNode.value]);
      }
    } else {
      var valueNode = argumentNode.value;
      var coercedValue = (0, _valueFromAST.valueFromAST)(valueNode, argType, variableValues);
      if ((0, _isInvalid2.default)(coercedValue)) {
        var errors = (0, _isValidLiteralValue.isValidLiteralValue)(argType, valueNode);
        var message = errors ? '\n' + errors.join('\n') : '';
        throw new _error.GraphQLError('Argument "' + name + '" got invalid value ' + (0, _printer.print)(valueNode) + '.' + message, [argumentNode.value]);
      }
      coercedValues[name] = coercedValue;
    }
  }
  return coercedValues;
}

/**
 * Prepares an object map of argument values given a directive definition
 * and a AST node which may contain directives. Optionally also accepts a map
 * of variable values.
 *
 * If the directive does not exist on the node, returns undefined.
 */
function getDirectiveValues(directiveDef, node, variableValues) {
  var directiveNode = node.directives && (0, _find2.default)(node.directives, function (directive) {
    return directive.name.value === directiveDef.name;
  });

  if (directiveNode) {
    return getArgumentValues(directiveDef, directiveNode, variableValues);
  }
}

/**
 * Given a type and any value, return a runtime value coerced to match the type.
 */
function coerceValue(type, value) {
  // Ensure flow knows that we treat function params as const.
  var _value = value;

  if ((0, _isInvalid2.default)(_value)) {
    return; // Intentionally return no value.
  }

  if (type instanceof _definition.GraphQLNonNull) {
    if (_value === null) {
      return; // Intentionally return no value.
    }
    return coerceValue(type.ofType, _value);
  }

  if (_value === null) {
    // Intentionally return the value null.
    return null;
  }

  if (type instanceof _definition.GraphQLList) {
    var itemType = type.ofType;
    if ((0, _iterall.isCollection)(_value)) {
      var coercedValues = [];
      var valueIter = (0, _iterall.createIterator)(_value);
      if (!valueIter) {
        return; // Intentionally return no value.
      }
      var step = void 0;
      while (!(step = valueIter.next()).done) {
        var itemValue = coerceValue(itemType, step.value);
        if ((0, _isInvalid2.default)(itemValue)) {
          return; // Intentionally return no value.
        }
        coercedValues.push(itemValue);
      }
      return coercedValues;
    }
    var coercedValue = coerceValue(itemType, _value);
    if ((0, _isInvalid2.default)(coercedValue)) {
      return; // Intentionally return no value.
    }
    return [coerceValue(itemType, _value)];
  }

  if (type instanceof _definition.GraphQLInputObjectType) {
    if ((typeof _value === 'undefined' ? 'undefined' : _typeof(_value)) !== 'object') {
      return; // Intentionally return no value.
    }
    var coercedObj = Object.create(null);
    var fields = type.getFields();
    var fieldNames = Object.keys(fields);
    for (var i = 0; i < fieldNames.length; i++) {
      var fieldName = fieldNames[i];
      var field = fields[fieldName];
      if ((0, _isInvalid2.default)(_value[fieldName])) {
        if (!(0, _isInvalid2.default)(field.defaultValue)) {
          coercedObj[fieldName] = field.defaultValue;
        } else if (field.type instanceof _definition.GraphQLNonNull) {
          return; // Intentionally return no value.
        }
        continue;
      }
      var fieldValue = coerceValue(field.type, _value[fieldName]);
      if ((0, _isInvalid2.default)(fieldValue)) {
        return; // Intentionally return no value.
      }
      coercedObj[fieldName] = fieldValue;
    }
    return coercedObj;
  }

  !(type instanceof _definition.GraphQLScalarType || type instanceof _definition.GraphQLEnumType) ? (0, _invariant2.default)(0, 'Must be input type') : void 0;

  var parsed = type.parseValue(_value);
  if ((0, _isNullish2.default)(parsed)) {
    // null or invalid values represent a failure to parse correctly,
    // in which case no value is returned.
    return;
  }

  return parsed;
}