| 1235 | } |
| 1236 | |
| 1237 | const SignatureTemplate* ExpressionFuzzer::chooseRandomSignatureTemplate( |
| 1238 | const TypePtr& returnType, |
| 1239 | const std::string& typeName, |
| 1240 | const std::string& functionName) { |
| 1241 | std::vector<const SignatureTemplate*> eligible; |
| 1242 | if (expressionToTemplatedSignature_.find(functionName) == |
| 1243 | expressionToTemplatedSignature_.end()) { |
| 1244 | return nullptr; |
| 1245 | } |
| 1246 | auto it = expressionToTemplatedSignature_[functionName].find(typeName); |
| 1247 | if (it == expressionToTemplatedSignature_[functionName].end()) { |
| 1248 | return nullptr; |
| 1249 | } |
| 1250 | // Only function signatures whose return type can match returnType are |
| 1251 | // eligible. There may be ineligible signatures in signaturesMap_ because |
| 1252 | // the map keys only differentiate the top-level type names. |
| 1253 | auto& signatureTemplates = it->second; |
| 1254 | for (auto signatureTemplate : signatureTemplates) { |
| 1255 | exec::ReverseSignatureBinder binder{ |
| 1256 | *signatureTemplate->signature, returnType}; |
| 1257 | if (binder.tryBind()) { |
| 1258 | eligible.push_back(signatureTemplate); |
| 1259 | } |
| 1260 | } |
| 1261 | if (eligible.empty()) { |
| 1262 | return nullptr; |
| 1263 | } |
| 1264 | |
| 1265 | auto idx = rand32(0, eligible.size() - 1); |
| 1266 | return eligible[idx]; |
| 1267 | } |
| 1268 | |
| 1269 | const SignatureTemplate* ExpressionFuzzer::findSignatureTemplate( |
| 1270 | const std::vector<TypePtr>& argTypes, |