81 lines
2.8 KiB
JavaScript
81 lines
2.8 KiB
JavaScript
import { GraphQLError } from '../../error/GraphQLError';
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import { isObjectType, isInterfaceType, isInputObjectType } from '../../type/definition';
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export function duplicateFieldDefinitionNameMessage(typeName, fieldName) {
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return "Field \"".concat(typeName, ".").concat(fieldName, "\" can only be defined once.");
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}
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export function existedFieldDefinitionNameMessage(typeName, fieldName) {
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return "Field \"".concat(typeName, ".").concat(fieldName, "\" already exists in the schema. It cannot also be defined in this type extension.");
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}
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/**
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* Unique field definition names
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*
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* A GraphQL complex type is only valid if all its fields are uniquely named.
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*/
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export function UniqueFieldDefinitionNames(context) {
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var schema = context.getSchema();
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var existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
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var knownFieldNames = Object.create(null);
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return {
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InputObjectTypeDefinition: checkFieldUniqueness,
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InputObjectTypeExtension: checkFieldUniqueness,
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InterfaceTypeDefinition: checkFieldUniqueness,
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InterfaceTypeExtension: checkFieldUniqueness,
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ObjectTypeDefinition: checkFieldUniqueness,
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ObjectTypeExtension: checkFieldUniqueness
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};
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function checkFieldUniqueness(node) {
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var typeName = node.name.value;
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if (!knownFieldNames[typeName]) {
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knownFieldNames[typeName] = Object.create(null);
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}
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if (node.fields) {
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var fieldNames = knownFieldNames[typeName];
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var _iteratorNormalCompletion = true;
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var _didIteratorError = false;
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var _iteratorError = undefined;
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try {
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for (var _iterator = node.fields[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
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var fieldDef = _step.value;
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var fieldName = fieldDef.name.value;
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if (hasField(existingTypeMap[typeName], fieldName)) {
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context.reportError(new GraphQLError(existedFieldDefinitionNameMessage(typeName, fieldName), fieldDef.name));
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} else if (fieldNames[fieldName]) {
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context.reportError(new GraphQLError(duplicateFieldDefinitionNameMessage(typeName, fieldName), [fieldNames[fieldName], fieldDef.name]));
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} else {
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fieldNames[fieldName] = fieldDef.name;
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}
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}
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} catch (err) {
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_didIteratorError = true;
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_iteratorError = err;
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} finally {
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try {
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if (!_iteratorNormalCompletion && _iterator.return != null) {
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_iterator.return();
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}
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} finally {
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if (_didIteratorError) {
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throw _iteratorError;
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}
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}
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}
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}
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return false;
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}
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}
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function hasField(type, fieldName) {
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if (isObjectType(type) || isInterfaceType(type) || isInputObjectType(type)) {
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return type.getFields()[fieldName];
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}
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return false;
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}
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