digiaonline /
graphql-php
| Total Complexity | 82 |
| Total Lines | 572 |
| Duplicated Lines | 0 % |
| Changes | 2 | ||
| 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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| 36 | class ValuesResolver |
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| 37 | { |
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| 38 | /** |
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| 39 | * Prepares an object map of argument values given a list of argument |
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| 40 | * definitions and list of argument AST nodes. |
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| 41 | * |
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| 42 | * @see https://facebook.github.io/graphql/October2016/#CoerceArgumentValues() |
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| 43 | * |
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| 44 | * @param Field|Directive $definition |
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| 45 | * @param ArgumentsAwareInterface $node |
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| 46 | * @param array $variableValues |
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| 47 | * @return array |
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| 48 | * @throws ExecutionException |
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| 49 | * @throws InvariantException |
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| 50 | */ |
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| 51 | public static function coerceArgumentValues( |
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| 52 | $definition, |
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| 53 | ArgumentsAwareInterface $node, |
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| 54 | array $variableValues = [] |
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| 55 | ): array { |
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| 56 | $coercedValues = []; |
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| 57 | $argumentDefinitions = $definition->getArguments(); |
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| 58 | $argumentNodes = $node->getArguments(); |
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| 59 | |||
| 60 | if (empty($argumentDefinitions)) { |
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| 61 | return $coercedValues; |
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| 62 | } |
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| 63 | |||
| 64 | /** @var ArgumentNode[] $argumentNodeMap */ |
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| 65 | $argumentNodeMap = keyMap($argumentNodes, function (ArgumentNode $value) { |
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| 66 | return $value->getNameValue(); |
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| 67 | }); |
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| 68 | |||
| 69 | foreach ($argumentDefinitions as $argumentDefinition) { |
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| 70 | $argumentName = $argumentDefinition->getName(); |
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| 71 | $argumentType = $argumentDefinition->getType(); |
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| 72 | $argumentNode = $argumentNodeMap[$argumentName] ?? null; |
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| 73 | $defaultValue = $argumentDefinition->getDefaultValue(); |
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| 74 | $argumentValue = null !== $argumentNode ? $argumentNode->getValue() : null; |
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| 75 | |||
| 76 | if (null !== $argumentNode && $argumentValue instanceof VariableNode) { |
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| 77 | $variableName = $argumentValue->getNameValue(); |
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| 78 | $hasValue = !empty($variableValues) && \array_key_exists($variableName, $variableValues); |
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| 79 | $isNull = $hasValue && null === $variableValues[$variableName]; |
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| 80 | } else { |
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| 81 | $hasValue = null !== $argumentNode; |
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| 82 | $isNull = $hasValue && $argumentValue instanceof NullValueNode; |
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| 83 | } |
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| 84 | |||
| 85 | if (!$hasValue && null !== $defaultValue) { |
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| 86 | // If no argument was provided where the definition has a default value, |
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| 87 | // use the default value. |
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| 88 | $coercedValues[$argumentName] = $defaultValue; |
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| 89 | } elseif ((!$hasValue || $isNull) && $argumentType instanceof NonNullType) { |
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| 90 | // If no argument or a null value was provided to an argument with a |
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| 91 | // non-null type (required), produce a field error. |
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| 92 | if ($isNull) { |
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| 93 | throw new ExecutionException( |
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| 94 | \sprintf( |
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| 95 | 'Argument "%s" of non-null type "%s" must not be null.', |
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| 96 | $argumentName, |
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| 97 | $argumentType |
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| 98 | ), |
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| 99 | [$argumentValue] |
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| 100 | ); |
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| 101 | } elseif (null !== $argumentNode && $argumentValue instanceof VariableNode) { |
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| 102 | $variableName = $argumentValue->getNameValue(); |
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| 103 | throw new ExecutionException( |
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| 104 | \sprintf( |
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| 105 | 'Argument "%s" of required type "%s" was provided the variable "$%s" ' |
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| 106 | . 'which was not provided a runtime value.', |
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| 107 | $argumentName, |
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| 108 | $argumentType, |
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| 109 | $variableName |
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| 110 | ), |
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| 111 | [$argumentValue] |
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| 112 | ); |
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| 113 | } else { |
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| 114 | throw new ExecutionException( |
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| 115 | \sprintf( |
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| 116 | 'Argument "%s" of required type "%s" was not provided.', |
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| 117 | $argumentName, |
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| 118 | $argumentType |
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| 119 | ), |
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| 120 | [$node] |
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| 121 | ); |
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| 122 | } |
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| 123 | } elseif ($hasValue) { |
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| 124 | if ($argumentValue instanceof NullValueNode) { |
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| 125 | // If the explicit value `null` was provided, an entry in the coerced |
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| 126 | // values must exist as the value `null`. |
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| 127 | $coercedValues[$argumentName] = null; |
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| 128 | } elseif ($argumentValue instanceof VariableNode) { |
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| 129 | $variableName = $argumentValue->getNameValue(); |
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| 130 | invariant(!empty($variableValues), 'Must exist for hasValue to be true.'); |
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| 131 | // Note: This does no further checking that this variable is correct. |
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| 132 | // This assumes that this query has been validated and the variable |
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| 133 | // usage here is of the correct type. |
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| 134 | $coercedValues[$argumentName] = $variableValues[$variableName]; |
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| 135 | } else { |
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| 136 | $valueNode = $argumentNode->getValue(); |
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|
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| 137 | try { |
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| 138 | // Value nodes that cannot be resolved should be treated as invalid values |
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| 139 | // because there is no undefined value in PHP so that we throw an exception |
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| 140 | $coercedValue = ValueASTConverter::convert($valueNode, $argumentType, $variableValues); |
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| 141 | } catch (\Exception $ex) { |
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| 142 | // Note: ValuesOfCorrectType validation should catch this before |
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| 143 | // execution. This is a runtime check to ensure execution does not |
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| 144 | // continue with an invalid argument value. |
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| 145 | throw new ExecutionException( |
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| 146 | \sprintf( |
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| 147 | 'Argument "%s" has invalid value %s.', |
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| 148 | $argumentName, |
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| 149 | (string)$argumentValue |
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| 150 | ), |
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| 151 | [$argumentValue], |
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| 152 | null, |
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| 153 | null, |
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| 154 | null, |
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| 155 | null, |
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| 156 | $ex |
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| 157 | ); |
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| 158 | } |
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| 159 | $coercedValues[$argumentName] = $coercedValue; |
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| 160 | } |
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| 161 | } |
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| 162 | } |
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| 163 | |||
| 164 | return $coercedValues; |
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| 165 | } |
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| 166 | |||
| 167 | /** |
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| 168 | * Prepares an object map of argument values given a directive definition |
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| 169 | * and a AST node which may contain directives. Optionally also accepts a map |
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| 170 | * of variable values. |
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| 171 | * |
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| 172 | * If the directive does not exist on the node, returns null. |
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| 173 | * |
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| 174 | * @param Directive $directive |
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| 175 | * @param mixed $node |
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| 176 | * @param array $variableValues |
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| 177 | * @return array|null |
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| 178 | * @throws ExecutionException |
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| 179 | * @throws InvariantException |
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| 180 | */ |
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| 181 | public static function coerceDirectiveValues( |
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| 196 | } |
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| 197 | |||
| 198 | /** |
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| 199 | * Prepares an object map of variableValues of the correct type based on the |
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| 200 | * provided variable definitions and arbitrary input. If the input cannot be |
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| 201 | * parsed to match the variable definitions, a GraphQLError will be thrown. |
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| 202 | * |
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| 203 | * @param Schema $schema |
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| 204 | * @param array|VariableDefinitionNode[] $variableDefinitionNodes |
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| 205 | * @param array $inputs |
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| 206 | * @return CoercedValue |
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| 207 | * @throws GraphQLException |
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| 208 | * @throws InvariantException |
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| 209 | * @throws ConversionException |
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| 210 | */ |
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| 211 | public static function coerceVariableValues( |
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| 212 | Schema $schema, |
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| 213 | array $variableDefinitionNodes, |
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| 214 | array $inputs |
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| 215 | ): CoercedValue { |
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| 216 | $coercedValues = []; |
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| 217 | $errors = []; |
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| 218 | |||
| 219 | foreach ($variableDefinitionNodes as $variableDefinitionNode) { |
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| 220 | $variableName = $variableDefinitionNode->getVariable()->getNameValue(); |
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| 221 | $variableType = TypeASTConverter::convert($schema, $variableDefinitionNode->getType()); |
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| 222 | $variableTypeName = (string)$variableType; |
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| 223 | |||
| 224 | if ($variableTypeName === '') { |
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| 225 | $variableTypeName = (string)$variableDefinitionNode; |
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| 226 | } |
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| 227 | |||
| 228 | if (!static::isInputType($variableType)) { |
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| 229 | // Must use input types for variables. This should be caught during |
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| 230 | // validation, however is checked again here for safety. |
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| 231 | $errors[] = static::buildCoerceException( |
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| 232 | \sprintf( |
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| 233 | 'Variable "$%s" expected value of type "%s" which cannot be used as an input type', |
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| 234 | $variableName, |
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| 235 | $variableTypeName |
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| 236 | ), |
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| 237 | $variableDefinitionNode, |
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| 238 | null |
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| 239 | ); |
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| 240 | } else { |
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| 241 | $hasValue = \array_key_exists($variableName, $inputs); |
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| 242 | $value = $hasValue ? $inputs[$variableName] : null; |
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| 243 | if (!$hasValue && $variableDefinitionNode->hasDefaultValue()) { |
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| 244 | // If no value was provided to a variable with a default value, |
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| 245 | // use the default value. |
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| 246 | $coercedValues[$variableName] = ValueASTConverter::convert( |
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| 247 | $variableDefinitionNode->getDefaultValue(), |
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| 248 | $variableType |
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| 249 | ); |
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| 250 | } elseif ((!$hasValue || null === $value) && $variableType instanceof NonNullType) { |
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| 251 | // If no value or a nullish value was provided to a variable with a |
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| 252 | // non-null type (required), produce an error. |
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| 253 | $errors[] = static::buildCoerceException( |
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| 254 | \sprintf( |
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| 255 | $value |
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| 256 | ? 'Variable "$%s" of non-null type "%s" must not be null' |
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| 257 | : 'Variable "$%s" of required type "%s" was not provided', |
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| 258 | $variableName, |
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| 259 | $variableTypeName |
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| 260 | ), |
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| 261 | $variableDefinitionNode, |
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| 262 | null |
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| 263 | ); |
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| 264 | } elseif ($hasValue) { |
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| 265 | if (null === $value) { |
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| 266 | // If the explicit value `null` was provided, an entry in the coerced |
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| 267 | // values must exist as the value `null`. |
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| 268 | $coercedValues[$variableName] = null; |
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| 269 | } else { |
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| 270 | // Otherwise, a non-null value was provided, coerce it to the expected |
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| 271 | // type or report an error if coercion fails. |
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| 272 | $coercedValue = static::coerceValue($value, $variableType, $variableDefinitionNode); |
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| 273 | if ($coercedValue->hasErrors()) { |
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| 274 | $message = \sprintf( |
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| 275 | 'Variable "$%s" got invalid value %s', |
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| 276 | $variableName, |
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| 277 | jsonEncode($value) |
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| 278 | ); |
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| 279 | foreach ($coercedValue->getErrors() as $error) { |
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| 280 | $errors[] = static::buildCoerceException( |
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| 281 | $message, |
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| 282 | $variableDefinitionNode, |
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| 283 | null, |
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| 284 | $error->getMessage(), |
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| 285 | $error |
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| 286 | ); |
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| 287 | } |
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| 288 | } else { |
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| 289 | $coercedValues[$variableName] = $coercedValue->getValue(); |
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| 290 | } |
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| 291 | } |
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| 292 | } |
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| 293 | } |
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| 294 | } |
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| 295 | |||
| 296 | return new CoercedValue($coercedValues, $errors); |
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| 297 | } |
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| 298 | |||
| 299 | /** |
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| 300 | * @param TypeInterface|null $type |
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| 301 | * @return bool |
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| 302 | */ |
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| 303 | protected static function isInputType(?TypeInterface $type) |
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| 309 | } |
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| 310 | |||
| 311 | /** |
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| 312 | * Returns either a value which is valid for the provided type or a list of |
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| 313 | * encountered coercion errors. |
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| 314 | * |
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| 315 | * @param mixed|array $value |
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| 316 | * @param mixed $type |
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| 317 | * @param NodeInterface $blameNode |
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| 318 | * @param Path|null $path |
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| 319 | * @return CoercedValue |
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| 320 | * @throws GraphQLException |
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| 321 | * @throws InvariantException |
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| 322 | */ |
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| 323 | protected static function coerceValue($value, $type, $blameNode, ?Path $path = null): CoercedValue |
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| 324 | { |
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| 325 | if ($type instanceof NonNullType) { |
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| 326 | return static::coerceValueForNonNullType($value, $type, $blameNode, $path); |
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| 327 | } |
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| 328 | |||
| 329 | if (null === $value) { |
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| 330 | return new CoercedValue(null); |
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| 331 | } |
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| 332 | |||
| 333 | if ($type instanceof ScalarType) { |
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| 334 | return static::coerceValueForScalarType($value, $type, $blameNode, $path); |
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| 335 | } |
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| 336 | |||
| 337 | if ($type instanceof EnumType) { |
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| 338 | return static::coerceValueForEnumType($value, $type, $blameNode, $path); |
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| 339 | } |
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| 340 | |||
| 341 | if ($type instanceof ListType) { |
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| 342 | return static::coerceValueForListType($value, $type, $blameNode, $path); |
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| 343 | } |
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| 344 | |||
| 345 | if ($type instanceof InputObjectType) { |
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| 346 | return static::coerceValueForInputObjectType($value, $type, $blameNode, $path); |
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| 347 | } |
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| 348 | |||
| 349 | throw new GraphQLException('Unexpected type.'); |
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| 350 | } |
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| 351 | |||
| 352 | /** |
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| 353 | * @param mixed $value |
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| 354 | * @param NonNullType $type |
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| 355 | * @param NodeInterface $blameNode |
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| 356 | * @param Path|null $path |
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| 357 | * @return CoercedValue |
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| 358 | * @throws GraphQLException |
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| 359 | * @throws InvariantException |
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| 360 | */ |
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| 361 | protected static function coerceValueForNonNullType( |
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| 362 | $value, |
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| 363 | NonNullType $type, |
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| 364 | NodeInterface $blameNode, |
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| 365 | ?Path $path |
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| 366 | ): CoercedValue { |
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| 367 | if (null === $value) { |
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| 368 | return new CoercedValue(null, [ |
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| 369 | static::buildCoerceException( |
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| 370 | \sprintf('Expected non-nullable type %s not to be null', (string)$type), |
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| 371 | $blameNode, |
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| 372 | $path |
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| 373 | ) |
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| 374 | ]); |
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| 375 | } |
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| 376 | return static::coerceValue($value, $type->getOfType(), $blameNode, $path); |
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| 377 | } |
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| 378 | |||
| 379 | /** |
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| 380 | * Scalars determine if a value is valid via parseValue(), which can |
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| 381 | * throw to indicate failure. If it throws, maintain a reference to |
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| 382 | * the original error. |
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| 383 | * |
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| 384 | * @param mixed $value |
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| 385 | * @param ScalarType $type |
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| 386 | * @param NodeInterface $blameNode |
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| 387 | * @param Path|null $path |
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| 388 | * @return CoercedValue |
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| 389 | */ |
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| 390 | protected static function coerceValueForScalarType( |
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| 391 | $value, |
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| 392 | ScalarType $type, |
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| 393 | NodeInterface $blameNode, |
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| 394 | ?Path $path |
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| 395 | ): CoercedValue { |
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| 396 | try { |
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| 397 | $parseResult = $type->parseValue($value); |
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| 398 | if (null === $parseResult) { |
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| 399 | return new CoercedValue(null, [ |
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| 400 | new GraphQLException(\sprintf('Expected type %s', (string)$type)) |
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| 401 | ]); |
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| 402 | } |
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| 403 | return new CoercedValue($parseResult); |
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| 404 | } /** @noinspection PhpRedundantCatchClauseInspection */ catch (InvalidTypeException|CoercingException $ex) { |
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| 405 | return new CoercedValue(null, [ |
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| 406 | static::buildCoerceException( |
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| 407 | \sprintf('Expected type %s', (string)$type), |
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| 408 | $blameNode, |
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| 409 | $path, |
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| 410 | $ex->getMessage(), |
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| 411 | $ex |
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| 412 | ) |
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| 413 | ]); |
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| 414 | } |
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| 415 | } |
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| 416 | |||
| 417 | /** |
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| 418 | * @param mixed $value |
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| 419 | * @param EnumType $type |
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| 420 | * @param NodeInterface $blameNode |
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| 421 | * @param Path|null $path |
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| 422 | * @return CoercedValue |
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| 423 | * @throws InvariantException |
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| 424 | */ |
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| 425 | protected static function coerceValueForEnumType( |
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| 426 | $value, |
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| 427 | EnumType $type, |
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| 428 | NodeInterface $blameNode, |
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| 429 | ?Path $path |
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| 430 | ): CoercedValue { |
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| 431 | if (\is_string($value) && null !== ($enumValue = $type->getValue($value))) { |
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| 432 | return new CoercedValue($enumValue); |
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| 433 | } |
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| 434 | |||
| 435 | $suggestions = suggestionList((string)$value, \array_map(function (EnumValue $enumValue) { |
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| 436 | return $enumValue->getName(); |
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| 437 | }, $type->getValues())); |
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| 438 | |||
| 439 | $didYouMean = (!empty($suggestions)) |
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| 440 | ? 'did you mean' . \implode(',', $suggestions) |
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| 441 | : null; |
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| 442 | |||
| 443 | return new CoercedValue(null, [ |
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| 444 | static::buildCoerceException(\sprintf('Expected type %s', $type->getName()), $blameNode, $path, $didYouMean) |
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| 445 | ]); |
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| 446 | } |
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| 447 | |||
| 448 | /** |
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| 449 | * @param mixed $value |
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| 450 | * @param InputObjectType $type |
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| 451 | * @param NodeInterface $blameNode |
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| 452 | * @param Path|null $path |
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| 453 | * @return CoercedValue |
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| 454 | * @throws InvariantException |
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| 455 | * @throws GraphQLException |
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| 456 | */ |
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| 457 | protected static function coerceValueForInputObjectType( |
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| 458 | $value, |
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| 459 | InputObjectType $type, |
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| 460 | NodeInterface $blameNode, |
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| 461 | ?Path $path |
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| 462 | ): CoercedValue { |
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| 463 | $errors = []; |
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| 464 | $coercedValues = []; |
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| 465 | $fields = $type->getFields(); |
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| 466 | |||
| 467 | // Ensure every defined field is valid. |
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| 468 | foreach ($fields as $field) { |
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| 469 | $fieldType = $field->getType(); |
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| 470 | |||
| 471 | if (!isset($value[$field->getName()])) { |
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| 472 | if (!empty($field->getDefaultValue())) { |
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| 473 | $coercedValue[$field->getName()] = $field->getDefaultValue(); |
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| 474 | } elseif ($fieldType instanceof NonNullType) { |
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| 475 | $errors[] = new GraphQLException( |
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| 476 | \sprintf( |
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| 477 | "Field %s of required type %s! was not provided.", |
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| 478 | static::printPath(new Path($path, $field->getName())), |
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| 479 | (string)$fieldType->getOfType() |
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| 480 | ) |
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| 481 | ); |
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| 482 | } |
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| 483 | } else { |
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| 484 | $fieldValue = $value[$field->getName()]; |
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| 485 | $coercedValue = static::coerceValue( |
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| 486 | $fieldValue, |
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| 487 | $fieldType, |
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| 488 | $blameNode, |
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| 489 | new Path($path, $field->getName()) |
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| 490 | ); |
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| 491 | |||
| 492 | if ($coercedValue->hasErrors()) { |
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| 493 | $errors = \array_merge($errors, $coercedValue->getErrors()); |
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| 494 | } elseif (empty($errors)) { |
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| 495 | $coercedValues[$field->getName()] = $coercedValue->getValue(); |
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| 496 | } |
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| 497 | } |
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| 498 | } |
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| 499 | |||
| 500 | // Ensure every provided field is defined. |
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| 501 | foreach ($value as $fieldName => $fieldValue) { |
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| 502 | if (!isset($fields[$fieldName])) { |
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| 503 | $suggestions = suggestionList($fieldName, \array_keys($fields)); |
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| 504 | $didYouMean = (!empty($suggestions)) |
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| 505 | ? 'did you mean' . \implode(',', $suggestions) |
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| 506 | : null; |
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| 507 | |||
| 508 | $errors[] = static::buildCoerceException( |
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| 509 | \sprintf('Field "%s" is not defined by type %s', $fieldName, $type->getName()), |
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| 510 | $blameNode, |
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| 511 | $path, |
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| 512 | $didYouMean |
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| 513 | ); |
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| 514 | } |
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| 515 | } |
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| 516 | |||
| 517 | return new CoercedValue($coercedValues, $errors); |
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| 518 | } |
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| 519 | |||
| 520 | /** |
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| 521 | * @param mixed $value |
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| 522 | * @param ListType $type |
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| 523 | * @param NodeInterface $blameNode |
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| 524 | * @param Path|null $path |
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| 525 | * @return CoercedValue |
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| 526 | * @throws GraphQLException |
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| 527 | * @throws InvariantException |
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| 528 | */ |
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| 529 | protected static function coerceValueForListType( |
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| 530 | $value, |
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| 531 | ListType $type, |
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| 532 | NodeInterface $blameNode, |
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| 533 | ?Path $path |
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| 534 | ): CoercedValue { |
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| 535 | $itemType = $type->getOfType(); |
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| 536 | |||
| 537 | if (\is_array($value) || $value instanceof \Traversable) { |
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| 538 | $errors = []; |
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| 539 | $coercedValues = []; |
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| 540 | |||
| 541 | foreach ($value as $index => $itemValue) { |
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| 542 | $coercedValue = static::coerceValue($itemValue, $itemType, $blameNode, new Path($path, $index)); |
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| 543 | |||
| 544 | if ($coercedValue->hasErrors()) { |
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| 545 | $errors = \array_merge($errors, $coercedValue->getErrors()); |
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| 546 | } else { |
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| 547 | $coercedValues[] = $coercedValue->getValue(); |
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| 548 | } |
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| 549 | } |
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| 550 | |||
| 551 | return new CoercedValue($coercedValues, $errors); |
||
| 552 | } |
||
| 553 | |||
| 554 | // Lists accept a non-list value as a list of one. |
||
| 555 | $coercedValue = static::coerceValue($value, $itemType, $blameNode); |
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| 556 | |||
| 557 | return new CoercedValue([$coercedValue->getValue()], $coercedValue->getErrors()); |
||
| 558 | } |
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| 559 | |||
| 560 | /** |
||
| 561 | * @param string $message |
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| 562 | * @param NodeInterface $blameNode |
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| 563 | * @param Path|null $path |
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| 564 | * @param null|string $subMessage |
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| 565 | * @param GraphQLException|null $originalException |
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| 566 | * @return GraphQLException |
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| 567 | */ |
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| 568 | protected static function buildCoerceException( |
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| 587 | ); |
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| 588 | } |
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| 589 | |||
| 590 | /** |
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| 591 | * @param Path|null $path |
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| 592 | * @return string |
||
| 593 | */ |
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| 594 | protected static function printPath(?Path $path) |
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| 608 | } |
||
| 609 | } |
||
| 610 |
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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.