52 lines
1.9 KiB
JavaScript
52 lines
1.9 KiB
JavaScript
import { GraphQLError } from '../../error/GraphQLError';
|
|
import { isEnumType } from '../../type/definition';
|
|
export function duplicateEnumValueNameMessage(typeName, valueName) {
|
|
return "Enum value \"".concat(typeName, ".").concat(valueName, "\" can only be defined once.");
|
|
}
|
|
export function existedEnumValueNameMessage(typeName, valueName) {
|
|
return "Enum value \"".concat(typeName, ".").concat(valueName, "\" already exists in the schema. It cannot also be defined in this type extension.");
|
|
}
|
|
/**
|
|
* Unique enum value names
|
|
*
|
|
* A GraphQL enum type is only valid if all its values are uniquely named.
|
|
*/
|
|
|
|
export function UniqueEnumValueNames(context) {
|
|
var schema = context.getSchema();
|
|
var existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
|
|
var knownValueNames = Object.create(null);
|
|
return {
|
|
EnumTypeDefinition: checkValueUniqueness,
|
|
EnumTypeExtension: checkValueUniqueness
|
|
};
|
|
|
|
function checkValueUniqueness(node) {
|
|
var typeName = node.name.value;
|
|
|
|
if (!knownValueNames[typeName]) {
|
|
knownValueNames[typeName] = Object.create(null);
|
|
}
|
|
|
|
if (node.values) {
|
|
var valueNames = knownValueNames[typeName];
|
|
|
|
for (var _i2 = 0, _node$values2 = node.values; _i2 < _node$values2.length; _i2++) {
|
|
var valueDef = _node$values2[_i2];
|
|
var valueName = valueDef.name.value;
|
|
var existingType = existingTypeMap[typeName];
|
|
|
|
if (isEnumType(existingType) && existingType.getValue(valueName)) {
|
|
context.reportError(new GraphQLError(existedEnumValueNameMessage(typeName, valueName), valueDef.name));
|
|
} else if (valueNames[valueName]) {
|
|
context.reportError(new GraphQLError(duplicateEnumValueNameMessage(typeName, valueName), [valueNames[valueName], valueDef.name]));
|
|
} else {
|
|
valueNames[valueName] = valueDef.name;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|