Total Complexity | 87 |
Total Lines | 628 |
Duplicated Lines | 0 % |
Changes | 3 | ||
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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186 | Directive $directive, |
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187 | $node, |
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188 | array $variableValues = [] |
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189 | ): ?array { |
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190 | $directiveNode = $node->hasDirectives() |
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191 | ? find($node->getDirectives(), function (NameAwareInterface $value) use ($directive) { |
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192 | return $value->getNameValue() === $directive->getName(); |
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193 | }) : null; |
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194 | |||
195 | if (null !== $directiveNode) { |
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196 | return $this->coerceArgumentValues($directive, $directiveNode, $variableValues); |
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197 | } |
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198 | |||
199 | return null; |
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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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216 | Schema $schema, |
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217 | array $variableDefinitionNodes, |
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218 | array $inputs |
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219 | ): CoercedValue { |
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220 | $coercedValues = []; |
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221 | $errors = []; |
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222 | |||
223 | foreach ($variableDefinitionNodes as $variableDefinitionNode) { |
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224 | $variableName = $variableDefinitionNode->getVariable()->getNameValue(); |
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225 | $variableType = TypeASTConverter::convert($schema, $variableDefinitionNode->getType()); |
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226 | $variableTypeName = (string)$variableType; |
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227 | |||
228 | if ($variableTypeName === '') { |
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229 | $variableTypeName = (string)$variableDefinitionNode; |
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230 | } |
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231 | |||
232 | if (!$this->isInputType($variableType)) { |
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233 | // Must use input types for variables. This should be caught during |
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234 | // validation, however is checked again here for safety. |
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235 | $errors[] = $this->buildCoerceException( |
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236 | \sprintf( |
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237 | 'Variable "$%s" expected value of type "%s" which cannot be used as an input type', |
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238 | $variableName, |
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239 | $variableTypeName |
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240 | ), |
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241 | $variableDefinitionNode, |
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242 | null |
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243 | ); |
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244 | } else { |
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245 | $hasValue = \array_key_exists($variableName, $inputs); |
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246 | $value = $hasValue ? $inputs[$variableName] : null; |
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247 | if (!$hasValue && $variableDefinitionNode->hasDefaultValue()) { |
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248 | // If no value was provided to a variable with a default value, |
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249 | // use the default value. |
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250 | $coercedValues[$variableName] = ValueASTConverter::convert( |
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251 | $variableDefinitionNode->getDefaultValue(), |
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252 | $variableType |
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253 | ); |
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254 | } elseif ((!$hasValue || null === $value) && $variableType instanceof NonNullType) { |
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255 | // If no value or a nullish value was provided to a variable with a |
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256 | // non-null type (required), produce an error. |
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257 | $errors[] = $this->buildCoerceException( |
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258 | \sprintf( |
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259 | $value |
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260 | ? 'Variable "$%s" of non-null type "%s" must not be null' |
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261 | : 'Variable "$%s" of required type "%s" was not provided', |
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262 | $variableName, |
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263 | $variableTypeName |
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264 | ), |
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265 | $variableDefinitionNode, |
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266 | null |
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267 | ); |
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268 | } elseif ($hasValue) { |
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269 | if (null === $value) { |
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270 | // If the explicit value `null` was provided, an entry in the coerced |
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271 | // values must exist as the value `null`. |
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272 | $coercedValues[$variableName] = null; |
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273 | } else { |
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274 | // Otherwise, a non-null value was provided, coerce it to the expected |
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275 | // type or report an error if coercion fails. |
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276 | $coercedValue = $this->coerceValue($value, $variableType, $variableDefinitionNode); |
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277 | if ($coercedValue->hasErrors()) { |
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278 | $message = \sprintf( |
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279 | 'Variable "$%s" got invalid value %s', |
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280 | $variableName, |
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281 | jsonEncode($value) |
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282 | ); |
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283 | foreach ($coercedValue->getErrors() as $error) { |
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284 | $errors[] = $this->buildCoerceException( |
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285 | $message, |
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286 | $variableDefinitionNode, |
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287 | null, |
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288 | $error->getMessage(), |
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289 | $error |
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290 | ); |
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291 | } |
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292 | } else { |
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293 | $coercedValues[$variableName] = $coercedValue->getValue(); |
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294 | } |
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295 | } |
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296 | } |
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297 | } |
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298 | } |
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299 | |||
300 | return new CoercedValue($coercedValues, $errors); |
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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 |
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309 | function isInputType( |
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310 | ?TypeInterface $type |
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311 | ) { |
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312 | return ($type instanceof ScalarType) || |
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313 | ($type instanceof EnumType) || |
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314 | ($type instanceof InputObjectType) || |
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315 | (($type instanceof WrappingTypeInterface) && $this->isInputType($type->getOfType())); |
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316 | } |
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317 | |||
318 | /** |
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319 | * Returns either a value which is valid for the provided type or a list of |
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320 | * encountered coercion errors. |
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321 | * |
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322 | * @param mixed|array $value |
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323 | * @param mixed $type |
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324 | * @param NodeInterface $blameNode |
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325 | * @param Path|null $path |
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326 | * @return CoercedValue |
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327 | * @throws GraphQLException |
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328 | * @throws InvariantException |
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329 | */ |
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330 | private |
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331 | function coerceValue( |
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332 | $value, |
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333 | $type, |
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334 | $blameNode, |
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335 | ?Path $path = null |
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336 | ): CoercedValue { |
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337 | if ($type instanceof NonNullType) { |
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338 | return $this->coerceValueForNonNullType($value, $type, $blameNode, $path); |
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339 | } |
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340 | |||
341 | if (null === $value) { |
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342 | return new CoercedValue(null); |
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343 | } |
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344 | |||
345 | if ($type instanceof ScalarType) { |
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346 | return $this->coerceValueForScalarType($value, $type, $blameNode, $path); |
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347 | } |
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348 | |||
349 | if ($type instanceof EnumType) { |
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350 | return $this->coerceValueForEnumType($value, $type, $blameNode, $path); |
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351 | } |
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352 | |||
353 | if ($type instanceof ListType) { |
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354 | return $this->coerceValueForListType($value, $type, $blameNode, $path); |
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355 | } |
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356 | |||
357 | if ($type instanceof InputObjectType) { |
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358 | return $this->coerceValueForInputObjectType($value, $type, $blameNode, $path); |
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359 | } |
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360 | |||
361 | throw new GraphQLException('Unexpected type.'); |
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362 | } |
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363 | |||
364 | /** |
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365 | * @param mixed $value |
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366 | * @param NonNullType $type |
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367 | * @param NodeInterface $blameNode |
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368 | * @param Path|null $path |
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369 | * @return CoercedValue |
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370 | * @throws GraphQLException |
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371 | * @throws InvariantException |
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372 | */ |
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373 | protected |
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374 | function coerceValueForNonNullType( |
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375 | $value, |
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376 | NonNullType $type, |
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377 | NodeInterface $blameNode, |
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378 | ?Path $path |
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379 | ): CoercedValue { |
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380 | if (null === $value) { |
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381 | return new CoercedValue(null, [ |
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382 | $this->buildCoerceException( |
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383 | sprintf('Expected non-nullable type %s not to be null', (string)$type), |
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384 | $blameNode, |
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385 | $path |
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386 | ) |
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387 | ]); |
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388 | } |
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389 | return $this->coerceValue($value, $type->getOfType(), $blameNode, $path); |
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390 | } |
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391 | |||
392 | /** |
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393 | * Scalars determine if a value is valid via parseValue(), which can |
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394 | * throw to indicate failure. If it throws, maintain a reference to |
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395 | * the original error. |
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396 | * |
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397 | * @param mixed $value |
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398 | * @param ScalarType $type |
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399 | * @param NodeInterface $blameNode |
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400 | * @param Path|null $path |
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401 | * @return CoercedValue |
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402 | */ |
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403 | protected |
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404 | function coerceValueForScalarType( |
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405 | $value, |
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406 | ScalarType $type, |
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407 | NodeInterface $blameNode, |
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408 | ?Path $path |
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409 | ): CoercedValue { |
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410 | try { |
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411 | $parseResult = $type->parseValue($value); |
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412 | if (null === $parseResult) { |
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413 | return new CoercedValue(null, [ |
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414 | new GraphQLException(sprintf('Expected type %s', (string)$type)) |
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415 | ]); |
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416 | } |
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417 | return new CoercedValue($parseResult); |
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418 | } catch (InvalidTypeException|CoercingException $ex) { |
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419 | return new CoercedValue(null, [ |
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420 | $this->buildCoerceException( |
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421 | sprintf('Expected type %s', (string)$type), |
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422 | $blameNode, |
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423 | $path, |
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424 | $ex->getMessage(), |
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425 | $ex |
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426 | ) |
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427 | ]); |
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428 | } |
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429 | } |
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430 | |||
431 | /** |
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432 | * @param mixed $value |
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433 | * @param EnumType $type |
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434 | * @param NodeInterface $blameNode |
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435 | * @param Path|null $path |
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436 | * @return CoercedValue |
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437 | * @throws InvariantException |
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438 | */ |
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439 | protected |
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440 | function coerceValueForEnumType( |
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441 | $value, |
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442 | EnumType $type, |
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443 | NodeInterface $blameNode, |
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444 | ?Path $path |
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445 | ): CoercedValue { |
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446 | if (\is_string($value) && null !== ($enumValue = $type->getValue($value))) { |
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447 | return new CoercedValue($enumValue); |
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448 | } |
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449 | |||
450 | $suggestions = suggestionList((string)$value, \array_map(function (EnumValue $enumValue) { |
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451 | return $enumValue->getName(); |
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452 | }, $type->getValues())); |
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453 | |||
454 | $didYouMean = (!empty($suggestions)) |
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455 | ? 'did you mean' . \implode(',', $suggestions) |
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456 | : null; |
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457 | |||
458 | return new CoercedValue(null, [ |
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459 | $this->buildCoerceException(\sprintf('Expected type %s', $type->getName()), $blameNode, $path, $didYouMean) |
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460 | ]); |
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461 | } |
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462 | |||
463 | /** |
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464 | * @param mixed $value |
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465 | * @param InputObjectType $type |
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466 | * @param NodeInterface $blameNode |
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467 | * @param Path|null $path |
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468 | * @return CoercedValue |
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469 | * @throws GraphQLException |
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470 | * @throws InvariantException |
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471 | */ |
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472 | protected |
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473 | function coerceValueForInputObjectType( |
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474 | $value, |
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475 | InputObjectType $type, |
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476 | NodeInterface $blameNode, |
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477 | ?Path $path |
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478 | ): CoercedValue { |
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479 | $errors = []; |
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480 | $coercedValues = []; |
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481 | $fields = $type->getFields(); |
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482 | |||
483 | // Ensure every defined field is valid. |
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484 | foreach ($fields as $field) { |
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485 | $fieldType = $field->getType(); |
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486 | |||
487 | if (!isset($value[$field->getName()])) { |
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488 | if (!empty($field->getDefaultValue())) { |
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489 | $coercedValue[$field->getName()] = $field->getDefaultValue(); |
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490 | } elseif ($fieldType instanceof NonNullType) { |
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491 | $errors[] = new GraphQLException( |
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492 | \sprintf( |
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493 | "Field %s of required type %s! was not provided.", |
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494 | $this->printPath(new Path($path, $field->getName())), |
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495 | (string)$fieldType->getOfType() |
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496 | ) |
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497 | ); |
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498 | } |
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499 | } else { |
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500 | $fieldValue = $value[$field->getName()]; |
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501 | $coercedValue = $this->coerceValue( |
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502 | $fieldValue, |
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503 | $fieldType, |
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504 | $blameNode, |
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505 | new Path($path, $field->getName()) |
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506 | ); |
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507 | |||
508 | if ($coercedValue->hasErrors()) { |
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509 | $errors = \array_merge($errors, $coercedValue->getErrors()); |
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510 | } elseif (empty($errors)) { |
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511 | $coercedValues[$field->getName()] = $coercedValue->getValue(); |
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512 | } |
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513 | } |
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514 | } |
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515 | |||
516 | // Ensure every provided field is defined. |
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517 | foreach ($value as $fieldName => $fieldValue) { |
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518 | if (!isset($fields[$fieldName])) { |
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519 | $suggestions = suggestionList($fieldName, \array_keys($fields)); |
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520 | $didYouMean = (!empty($suggestions)) |
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521 | ? 'did you mean' . \implode(',', $suggestions) |
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522 | : null; |
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523 | |||
524 | $errors[] = $this->buildCoerceException( |
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525 | \sprintf('Field "%s" is not defined by type %s', $fieldName, $type->getName()), |
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526 | $blameNode, |
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527 | $path, |
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528 | $didYouMean |
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529 | ); |
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530 | } |
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531 | } |
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532 | |||
533 | return new CoercedValue($coercedValues, $errors); |
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534 | } |
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535 | |||
536 | /** |
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537 | * @param mixed $value |
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538 | * @param ListType $type |
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539 | * @param NodeInterface $blameNode |
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540 | * @param Path|null $path |
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541 | * @return CoercedValue |
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542 | * @throws GraphQLException |
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543 | * @throws InvariantException |
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544 | */ |
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545 | protected |
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546 | function coerceValueForListType( |
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547 | $value, |
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548 | ListType $type, |
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549 | NodeInterface $blameNode, |
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550 | ?Path $path |
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551 | ): CoercedValue { |
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552 | $itemType = $type->getOfType(); |
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553 | |||
554 | if (\is_array($value) || $value instanceof \Traversable) { |
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555 | $errors = []; |
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556 | $coercedValues = []; |
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557 | foreach ($value as $index => $itemValue) { |
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558 | $coercedValue = $this->coerceValue($itemValue, $itemType, $blameNode, new Path($path, $index)); |
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559 | |||
560 | if ($coercedValue->hasErrors()) { |
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561 | $errors = \array_merge($errors, $coercedValue->getErrors()); |
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562 | } else { |
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563 | $coercedValues[] = $coercedValue->getValue(); |
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564 | } |
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565 | } |
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566 | |||
567 | return new CoercedValue($coercedValues, $errors); |
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568 | } |
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569 | |||
570 | // Lists accept a non-list value as a list of one. |
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571 | $coercedValue = $this->coerceValue($value, $itemType, $blameNode); |
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572 | |||
573 | return new CoercedValue([$coercedValue->getValue()], $coercedValue->getErrors()); |
||
574 | } |
||
575 | |||
576 | /** |
||
577 | * @param string $message |
||
578 | * @param NodeInterface $blameNode |
||
579 | * @param Path|null $path |
||
580 | * @param null|string $subMessage |
||
581 | * @param GraphQLException|null $originalException |
||
582 | * @return GraphQLException |
||
583 | */ |
||
584 | protected |
||
585 | function buildCoerceException( |
||
586 | string $message, |
||
587 | NodeInterface $blameNode, |
||
588 | ?Path $path, |
||
589 | ?string $subMessage = null, |
||
590 | ?GraphQLException $originalException = null |
||
591 | ) { |
||
592 | $stringPath = $this->printPath($path); |
||
593 | |||
594 | return new CoercingException( |
||
595 | $message . |
||
596 | (($stringPath !== '') ? ' at ' . $stringPath : $stringPath) . |
||
597 | (($subMessage !== null) ? '; ' . $subMessage : '.'), |
||
598 | [$blameNode], |
||
599 | null, |
||
600 | null, |
||
601 | // TODO: Change this to null |
||
602 | [], |
||
603 | null, |
||
604 | $originalException |
||
605 | ); |
||
606 | } |
||
607 | |||
608 | /** |
||
609 | * @param Path|null $path |
||
610 | * @return string |
||
611 | */ |
||
612 | protected |
||
628 | } |
||
629 | |||
630 | /** |
||
631 | * @param VariableNode $variableNode |
||
632 | * @param TypeInterface $argumentType |
||
633 | * @param string $argumentName |
||
634 | * @param array $variableValues |
||
635 | * @param mixed $defaultValue |
||
636 | * @return mixed |
||
637 | * @throws ExecutionException |
||
638 | */ |
||
639 | protected |
||
669 | ); |
||
670 | } |
||
671 | } |
||
672 | } |
||
673 |
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.