digiaonline /
graphql-php
| Total Complexity | 87 |
| Total Lines | 618 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 0 | Features | 0 |
Complex classes like ValuesResolver often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ValuesResolver, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 41 | class ValuesResolver |
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| 42 | { |
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| 43 | /** |
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| 44 | * Prepares an object map of argument values given a list of argument |
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| 45 | * definitions and list of argument AST nodes. |
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| 46 | * |
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| 47 | * @see https://facebook.github.io/graphql/October2016/#CoerceArgumentValues() |
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| 48 | * |
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| 49 | * @param Field|Directive $definition |
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| 50 | * @param ArgumentsAwareInterface $node |
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| 51 | * @param array $variableValues |
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| 52 | * @return array |
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| 53 | * @throws ExecutionException |
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| 54 | * @throws InvalidTypeException |
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| 55 | * @throws InvariantException |
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| 56 | */ |
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| 57 | public function coerceArgumentValues($definition, ArgumentsAwareInterface $node, array $variableValues = []): array |
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| 58 | { |
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| 59 | $coercedValues = []; |
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| 60 | $argumentDefinitions = $definition->getArguments(); |
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| 61 | $argumentNodes = $node->getArguments(); |
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| 62 | |||
| 63 | if (empty($argumentDefinitions)) { |
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| 64 | return $coercedValues; |
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| 65 | } |
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| 66 | |||
| 67 | /** @var ArgumentNode[] $argumentNodeMap */ |
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| 68 | $argumentNodeMap = keyMap($argumentNodes, function (ArgumentNode $value) { |
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| 69 | return $value->getNameValue(); |
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| 70 | }); |
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| 71 | |||
| 72 | foreach ($argumentDefinitions as $argumentDefinition) { |
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| 73 | $argumentName = $argumentDefinition->getName(); |
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| 74 | $argumentType = $argumentDefinition->getType(); |
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| 75 | $argumentNode = $argumentNodeMap[$argumentName] ?? null; |
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| 76 | $defaultValue = $argumentDefinition->getDefaultValue(); |
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| 77 | $argumentValue = null !== $argumentNode ? $argumentNode->getValue() : null; |
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| 78 | |||
| 79 | if (null !== $argumentNode && $argumentValue instanceof VariableNode) { |
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| 80 | $variableName = $argumentValue->getNameValue(); |
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| 81 | $hasValue = !empty($variableValues) && \array_key_exists($variableName, $variableValues); |
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| 82 | $isNull = $hasValue && null === $variableValues[$variableName]; |
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| 83 | } else { |
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| 84 | $hasValue = null !== $argumentNode; |
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| 85 | $isNull = $hasValue && $argumentValue instanceof NullValueNode; |
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| 86 | } |
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| 87 | |||
| 88 | if (!$hasValue && null !== $defaultValue) { |
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| 89 | // If no argument was provided where the definition has a default value, |
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| 90 | // use the default value. |
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| 91 | $coercedValues[$argumentName] = $defaultValue; |
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| 92 | } elseif ((!$hasValue || $isNull) && $argumentType instanceof NonNullType) { |
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| 93 | // If no argument or a null value was provided to an argument with a |
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| 94 | // non-null type (required), produce a field error. |
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| 95 | if ($isNull) { |
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| 96 | throw new ExecutionException( |
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| 97 | \sprintf( |
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| 98 | 'Argument "%s" of non-null type "%s" must not be null.', |
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| 99 | $argumentName, |
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| 100 | $argumentType |
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| 101 | ), |
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| 102 | [$argumentValue] |
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| 103 | ); |
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| 104 | } elseif (null !== $argumentNode && $argumentValue instanceof VariableNode) { |
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| 105 | $variableName = $argumentValue->getNameValue(); |
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| 106 | throw new ExecutionException( |
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| 107 | \sprintf( |
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| 108 | 'Argument "%s" of required type "%s" was provided the variable "$%s" ' |
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| 109 | . 'which was not provided a runtime value.', |
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| 110 | $argumentName, |
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| 111 | $argumentType, |
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| 112 | $variableName |
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| 113 | ), |
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| 114 | [$argumentValue] |
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| 115 | ); |
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| 116 | } else { |
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| 117 | throw new ExecutionException( |
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| 118 | \sprintf( |
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| 119 | 'Argument "%s" of required type "%s" was not provided.', |
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| 120 | $argumentName, |
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| 121 | $argumentType |
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| 122 | ), |
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| 123 | [$node] |
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| 124 | ); |
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| 125 | } |
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| 126 | } elseif ($hasValue) { |
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| 127 | if ($argumentValue instanceof NullValueNode) { |
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| 128 | // If the explicit value `null` was provided, an entry in the coerced |
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| 129 | // values must exist as the value `null`. |
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| 130 | $coercedValues[$argumentName] = null; |
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| 131 | } elseif ($argumentValue instanceof VariableNode) { |
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| 132 | $variableName = $argumentValue->getNameValue(); |
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| 133 | invariant(!empty($variableValues), 'Must exist for hasValue to be true.'); |
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| 134 | // Note: This does no further checking that this variable is correct. |
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| 135 | // This assumes that this query has been validated and the variable |
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| 136 | // usage here is of the correct type. |
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| 137 | $coercedValues[$argumentName] = $variableValues[$variableName]; |
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| 138 | } else { |
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| 139 | $valueNode = $argumentNode->getValue(); |
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| 140 | try { |
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| 141 | // Value nodes that cannot be resolved should be treated as invalid values |
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| 142 | // because there is no undefined value in PHP so that we throw an exception |
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| 143 | $coercedValue = ValueASTConverter::convert($valueNode, $argumentType, $variableValues); |
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| 144 | } catch (\Exception $ex) { |
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| 145 | // Note: ValuesOfCorrectType validation should catch this before |
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| 146 | // execution. This is a runtime check to ensure execution does not |
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| 147 | // continue with an invalid argument value. |
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| 148 | throw new ExecutionException( |
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| 149 | \sprintf( |
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| 150 | 'Argument "%s" has invalid value %s.', |
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| 151 | $argumentName, |
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| 152 | (string)$argumentValue |
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| 153 | ), |
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| 154 | [$argumentValue], |
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| 155 | null, |
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| 156 | null, |
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| 157 | null, |
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| 158 | null, |
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| 159 | $ex |
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| 160 | ); |
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| 161 | } |
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| 162 | $coercedValues[$argumentName] = $coercedValue; |
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| 163 | } |
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| 164 | } |
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| 165 | } |
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| 166 | |||
| 167 | return $coercedValues; |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * Prepares an object map of argument values given a directive definition |
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| 172 | * and a AST node which may contain directives. Optionally also accepts a map |
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| 173 | * of variable values. |
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| 174 | * |
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| 175 | * If the directive does not exist on the node, returns null. |
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| 176 | * |
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| 177 | * @param Directive $directive |
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| 178 | * @param mixed $node |
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| 179 | * @param array $variableValues |
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| 180 | * @return array|null |
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| 181 | * @throws ExecutionException |
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| 182 | * @throws InvalidTypeException |
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| 183 | * @throws InvariantException |
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| 184 | */ |
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| 185 | public function coerceDirectiveValues( |
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| 200 | } |
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| 201 | |||
| 202 | /** |
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| 203 | * Prepares an object map of variableValues of the correct type based on the |
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| 204 | * provided variable definitions and arbitrary input. If the input cannot be |
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| 205 | * parsed to match the variable definitions, a GraphQLError will be thrown. |
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| 206 | * |
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| 207 | * @param Schema $schema |
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| 208 | * @param array|VariableDefinitionNode[] $variableDefinitionNodes |
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| 209 | * @param array $inputs |
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| 210 | * @return CoercedValue |
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| 211 | * @throws GraphQLException |
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| 212 | * @throws InvariantException |
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| 213 | * @throws ConversionException |
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| 214 | */ |
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| 215 | public function coerceVariableValues( |
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| 301 | } |
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| 302 | |||
| 303 | |||
| 304 | /** |
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| 305 | * @param TypeInterface|null $type |
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| 306 | * @return bool |
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| 307 | */ |
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| 308 | protected function isInputType( |
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| 309 | ?TypeInterface $type |
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| 310 | ) { |
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| 311 | return ($type instanceof ScalarType) || |
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| 312 | ($type instanceof EnumType) || |
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| 313 | ($type instanceof InputObjectType) || |
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| 314 | (($type instanceof WrappingTypeInterface) && $this->isInputType($type->getOfType())); |
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| 315 | } |
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| 316 | |||
| 317 | /** |
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| 318 | * Returns either a value which is valid for the provided type or a list of |
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| 319 | * encountered coercion errors. |
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| 320 | * |
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| 321 | * @param mixed|array $value |
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| 322 | * @param mixed $type |
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| 323 | * @param NodeInterface $blameNode |
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| 324 | * @param Path|null $path |
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| 325 | * @return CoercedValue |
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| 326 | * @throws GraphQLException |
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| 327 | * @throws InvariantException |
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| 328 | */ |
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| 329 | private function coerceValue( |
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| 330 | $value, |
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| 331 | $type, |
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| 332 | $blameNode, |
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| 333 | ?Path $path = null |
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| 334 | ): CoercedValue { |
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| 335 | if ($type instanceof NonNullType) { |
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| 336 | return $this->coerceValueForNonNullType($value, $type, $blameNode, $path); |
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| 337 | } |
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| 338 | |||
| 339 | if (null === $value) { |
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| 340 | return new CoercedValue(null); |
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| 341 | } |
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| 342 | |||
| 343 | if ($type instanceof ScalarType) { |
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| 344 | return $this->coerceValueForScalarType($value, $type, $blameNode, $path); |
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| 345 | } |
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| 346 | |||
| 347 | if ($type instanceof EnumType) { |
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| 348 | return $this->coerceValueForEnumType($value, $type, $blameNode, $path); |
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| 349 | } |
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| 350 | |||
| 351 | if ($type instanceof ListType) { |
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| 352 | return $this->coerceValueForListType($value, $type, $blameNode, $path); |
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| 353 | } |
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| 354 | |||
| 355 | if ($type instanceof InputObjectType) { |
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| 356 | return $this->coerceValueForInputObjectType($value, $type, $blameNode, $path); |
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| 357 | } |
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| 358 | |||
| 359 | throw new GraphQLException('Unexpected type.'); |
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| 360 | } |
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| 361 | |||
| 362 | /** |
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| 363 | * @param mixed $value |
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| 364 | * @param NonNullType $type |
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| 365 | * @param NodeInterface $blameNode |
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| 366 | * @param Path|null $path |
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| 367 | * @return CoercedValue |
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| 368 | * @throws GraphQLException |
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| 369 | * @throws InvariantException |
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| 370 | */ |
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| 371 | protected function coerceValueForNonNullType( |
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| 372 | $value, |
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| 373 | NonNullType $type, |
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| 374 | NodeInterface $blameNode, |
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| 375 | ?Path $path |
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| 376 | ): CoercedValue { |
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| 377 | if (null === $value) { |
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| 378 | return new CoercedValue(null, [ |
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| 379 | $this->buildCoerceException( |
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| 380 | sprintf('Expected non-nullable type %s not to be null', (string)$type), |
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| 381 | $blameNode, |
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| 382 | $path |
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| 383 | ) |
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| 384 | ]); |
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| 385 | } |
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| 386 | return $this->coerceValue($value, $type->getOfType(), $blameNode, $path); |
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| 387 | } |
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| 388 | |||
| 389 | /** |
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| 390 | * Scalars determine if a value is valid via parseValue(), which can |
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| 391 | * throw to indicate failure. If it throws, maintain a reference to |
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| 392 | * the original error. |
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| 393 | * |
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| 394 | * @param mixed $value |
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| 395 | * @param ScalarType $type |
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| 396 | * @param NodeInterface $blameNode |
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| 397 | * @param Path|null $path |
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| 398 | * @return CoercedValue |
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| 399 | */ |
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| 400 | protected function coerceValueForScalarType( |
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| 401 | $value, |
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| 402 | ScalarType $type, |
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| 403 | NodeInterface $blameNode, |
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| 404 | ?Path $path |
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| 405 | ): CoercedValue { |
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| 406 | try { |
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| 407 | $parseResult = $type->parseValue($value); |
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| 408 | if (null === $parseResult) { |
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| 409 | return new CoercedValue(null, [ |
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| 410 | new GraphQLException(sprintf('Expected type %s', (string)$type)) |
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| 411 | ]); |
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| 412 | } |
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| 413 | return new CoercedValue($parseResult); |
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| 414 | } catch (InvalidTypeException|CoercingException $ex) { |
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| 415 | return new CoercedValue(null, [ |
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| 416 | $this->buildCoerceException( |
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| 417 | sprintf('Expected type %s', (string)$type), |
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| 418 | $blameNode, |
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| 419 | $path, |
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| 420 | $ex->getMessage(), |
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| 421 | $ex |
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| 422 | ) |
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| 423 | ]); |
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| 424 | } |
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| 425 | } |
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| 426 | |||
| 427 | /** |
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| 428 | * @param mixed $value |
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| 429 | * @param EnumType $type |
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| 430 | * @param NodeInterface $blameNode |
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| 431 | * @param Path|null $path |
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| 432 | * @return CoercedValue |
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| 433 | * @throws InvariantException |
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| 434 | */ |
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| 435 | protected function coerceValueForEnumType( |
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| 436 | $value, |
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| 437 | EnumType $type, |
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| 438 | NodeInterface $blameNode, |
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| 439 | ?Path $path |
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| 440 | ): CoercedValue { |
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| 441 | if (\is_string($value) && null !== ($enumValue = $type->getValue($value))) { |
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| 442 | return new CoercedValue($enumValue); |
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| 443 | } |
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| 444 | |||
| 445 | $suggestions = suggestionList((string)$value, \array_map(function (EnumValue $enumValue) { |
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| 446 | return $enumValue->getName(); |
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| 447 | }, $type->getValues())); |
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| 448 | |||
| 449 | $didYouMean = (!empty($suggestions)) |
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| 450 | ? 'did you mean' . \implode(',', $suggestions) |
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| 451 | : null; |
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| 452 | |||
| 453 | return new CoercedValue(null, [ |
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| 454 | $this->buildCoerceException(\sprintf('Expected type %s', $type->getName()), $blameNode, $path, $didYouMean) |
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| 455 | ]); |
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| 456 | } |
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| 457 | |||
| 458 | /** |
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| 459 | * @param mixed $value |
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| 460 | * @param InputObjectType $type |
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| 461 | * @param NodeInterface $blameNode |
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| 462 | * @param Path|null $path |
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| 463 | * @return CoercedValue |
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| 464 | * @throws GraphQLException |
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| 465 | * @throws InvariantException |
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| 466 | */ |
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| 467 | protected function coerceValueForInputObjectType( |
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| 468 | $value, |
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| 469 | InputObjectType $type, |
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| 470 | NodeInterface $blameNode, |
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| 471 | ?Path $path |
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| 472 | ): CoercedValue { |
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| 473 | $errors = []; |
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| 474 | $coercedValues = []; |
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| 475 | $fields = $type->getFields(); |
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| 476 | |||
| 477 | // Ensure every defined field is valid. |
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| 478 | foreach ($fields as $field) { |
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| 479 | $fieldType = $field->getType(); |
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| 480 | |||
| 481 | if (!isset($value[$field->getName()])) { |
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| 482 | if (!empty($field->getDefaultValue())) { |
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| 483 | $coercedValue[$field->getName()] = $field->getDefaultValue(); |
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| 484 | } elseif ($fieldType instanceof NonNullType) { |
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| 485 | $errors[] = new GraphQLException( |
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| 486 | \sprintf( |
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| 487 | "Field %s of required type %s! was not provided.", |
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| 488 | $this->printPath(new Path($path, $field->getName())), |
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| 489 | (string)$fieldType->getOfType() |
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| 490 | ) |
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| 491 | ); |
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| 492 | } |
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| 493 | } else { |
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| 494 | $fieldValue = $value[$field->getName()]; |
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| 495 | $coercedValue = $this->coerceValue( |
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| 496 | $fieldValue, |
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| 497 | $fieldType, |
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| 498 | $blameNode, |
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| 499 | new Path($path, $field->getName()) |
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| 500 | ); |
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| 501 | |||
| 502 | if ($coercedValue->hasErrors()) { |
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| 503 | $errors = \array_merge($errors, $coercedValue->getErrors()); |
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| 504 | } elseif (empty($errors)) { |
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| 505 | $coercedValues[$field->getName()] = $coercedValue->getValue(); |
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| 506 | } |
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| 507 | } |
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| 508 | } |
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| 509 | |||
| 510 | // Ensure every provided field is defined. |
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| 511 | foreach ($value as $fieldName => $fieldValue) { |
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| 512 | if (!isset($fields[$fieldName])) { |
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| 513 | $suggestions = suggestionList($fieldName, \array_keys($fields)); |
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| 514 | $didYouMean = (!empty($suggestions)) |
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| 515 | ? 'did you mean' . \implode(',', $suggestions) |
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| 516 | : null; |
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| 517 | |||
| 518 | $errors[] = $this->buildCoerceException( |
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| 519 | \sprintf('Field "%s" is not defined by type %s', $fieldName, $type->getName()), |
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| 520 | $blameNode, |
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| 521 | $path, |
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| 522 | $didYouMean |
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| 523 | ); |
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| 524 | } |
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| 525 | } |
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| 526 | |||
| 527 | return new CoercedValue($coercedValues, $errors); |
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| 528 | } |
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| 529 | |||
| 530 | /** |
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| 531 | * @param mixed $value |
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| 532 | * @param ListType $type |
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| 533 | * @param NodeInterface $blameNode |
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| 534 | * @param Path|null $path |
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| 535 | * @return CoercedValue |
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| 536 | * @throws GraphQLException |
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| 537 | * @throws InvariantException |
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| 538 | */ |
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| 539 | protected function coerceValueForListType( |
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| 540 | $value, |
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| 541 | ListType $type, |
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| 542 | NodeInterface $blameNode, |
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| 543 | ?Path $path |
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| 544 | ): CoercedValue { |
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| 545 | $itemType = $type->getOfType(); |
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| 546 | |||
| 547 | if (\is_array($value) || $value instanceof \Traversable) { |
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| 548 | $errors = []; |
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| 549 | $coercedValues = []; |
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| 550 | foreach ($value as $index => $itemValue) { |
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| 551 | $coercedValue = $this->coerceValue($itemValue, $itemType, $blameNode, new Path($path, $index)); |
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| 552 | |||
| 553 | if ($coercedValue->hasErrors()) { |
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| 554 | $errors = \array_merge($errors, $coercedValue->getErrors()); |
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| 555 | } else { |
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| 556 | $coercedValues[] = $coercedValue->getValue(); |
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| 557 | } |
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| 558 | } |
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| 559 | |||
| 560 | return new CoercedValue($coercedValues, $errors); |
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| 561 | } |
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| 562 | |||
| 563 | // Lists accept a non-list value as a list of one. |
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| 564 | $coercedValue = $this->coerceValue($value, $itemType, $blameNode); |
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| 565 | |||
| 566 | return new CoercedValue([$coercedValue->getValue()], $coercedValue->getErrors()); |
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| 567 | } |
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| 568 | |||
| 569 | /** |
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| 570 | * @param string $message |
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| 571 | * @param NodeInterface $blameNode |
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| 572 | * @param Path|null $path |
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| 573 | * @param null|string $subMessage |
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| 574 | * @param GraphQLException|null $originalException |
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| 575 | * @return GraphQLException |
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| 576 | */ |
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| 577 | protected function buildCoerceException( |
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| 578 | string $message, |
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| 579 | NodeInterface $blameNode, |
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| 580 | ?Path $path, |
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| 581 | ?string $subMessage = null, |
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| 582 | ?GraphQLException $originalException = null |
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| 583 | ) { |
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| 584 | $stringPath = $this->printPath($path); |
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| 585 | |||
| 586 | return new CoercingException( |
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| 587 | $message . |
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| 588 | (($stringPath !== '') ? ' at ' . $stringPath : $stringPath) . |
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| 589 | (($subMessage !== null) ? '; ' . $subMessage : '.'), |
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| 590 | [$blameNode], |
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| 591 | null, |
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| 592 | null, |
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| 593 | // TODO: Change this to null |
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| 594 | [], |
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| 595 | null, |
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| 596 | $originalException |
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| 597 | ); |
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| 598 | } |
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| 599 | |||
| 600 | /** |
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| 601 | * @param Path|null $path |
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| 602 | * @return string |
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| 603 | */ |
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| 604 | protected function printPath( |
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| 619 | } |
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| 620 | |||
| 621 | /** |
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| 622 | * @param VariableNode $variableNode |
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| 623 | * @param TypeInterface $argumentType |
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| 624 | * @param string $argumentName |
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| 625 | * @param array $variableValues |
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| 626 | * @param mixed $defaultValue |
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| 627 | * @return mixed |
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| 628 | * @throws ExecutionException |
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| 629 | */ |
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| 630 | protected function coerceValueForVariableNode( |
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| 659 | ); |
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| 660 | } |
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| 661 | } |
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| 662 | } |
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| 663 |
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This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.