// ================================================================= // Check for duplicate identifier. // ================================================================= CClassMemberASTNode* CClassASTNode::FindClassMethod(CSemanter* semanter, std::string identifier, std::vector<CDataType*> arguments, bool explicit_arguments, CASTNode* ignoreNode, CASTNode* referenceNode) { // Make sure this class is semanted. if (!Semanted) { Semant(semanter); } // Find all possible methods with the name. std::vector<CClassMemberASTNode*> nodes; CClassASTNode* scope = this; while (scope != NULL) { if (scope->Body != NULL) { for (auto iter = scope->Body->Children.begin(); iter != scope->Body->Children.end(); iter++) { CClassMemberASTNode* member = dynamic_cast<CClassMemberASTNode*>(*iter); if (member != NULL && member->MemberType == MemberType::Method && member->Identifier == identifier && member != ignoreNode && arguments.size() <= member->Arguments.size()) { // Has one of the other members overridcen this method already? bool alreadyExists = false; for (auto iter2 = nodes.begin(); iter2 != nodes.end(); iter2++) { CClassMemberASTNode* member2 = *iter2; if (member->Identifier == member2->Identifier && member->Arguments.size() == member2->Arguments.size() && member->IsVirtual == true && member2->IsOverride == true) { bool argsSame = true; for (unsigned int i = 0; i < member->Arguments.size(); i++) { CVariableStatementASTNode* arg = member->Arguments.at(i); CVariableStatementASTNode* arg2 = member2->Arguments.at(i); if (!arg->Type->IsEqualTo(semanter, arg2->Type)) { argsSame = false; break; } } if (argsSame == true) { alreadyExists = true; break; } } } if (alreadyExists == false) { member->Semant(semanter); nodes.push_back(member); } } } } scope = scope->SuperClass; } // Try and find amatch! CClassMemberASTNode* match = NULL; bool isExactMatch = false; std::string errorMessage = ""; // Look for valid nodes. for (auto iter = nodes.begin(); iter != nodes.end(); iter++) { CClassMemberASTNode* member = *iter; bool exact = true; bool possible = true; for (unsigned int i = 0; i < member->Arguments.size(); i++) { CVariableStatementASTNode* arg = member->Arguments.at(i); if (arguments.size() > member->Arguments.size()) { continue; } if (i < arguments.size()) { if (arguments.at(i)->IsEqualTo(semanter, arg->Type)) { continue; } exact = false; if (!explicit_arguments && CCastExpressionASTNode::IsValidCast(semanter, arguments.at(i), arg->Type, false))// arguments.at(i)->CanCastTo(semanter, arg->Type)) { continue; } } else if (arg->AssignmentExpression != NULL) { exact = false; if (!explicit_arguments) { continue; } } possible = false; break; } if (!possible) { continue; } if (exact == true) { if (isExactMatch == true) { semanter->GetContext()->FatalError(CStringHelper::FormatString("Found ambiguous reference to method of class '%s'. Reference could mean either '%s' or '%s'.", Identifier.c_str(), match->ToString().c_str(), member->ToString().c_str()), referenceNode == NULL ? Token : referenceNode->Token); } else { errorMessage = ""; match = member; isExactMatch = true; } } else { if (!isExactMatch) { if (match != NULL) { errorMessage = CStringHelper::FormatString("Found ambiguous reference to method of class '%s'. Reference could mean either '%s' or '%s'.", Identifier.c_str(), match->ToString().c_str(), member->ToString().c_str()); } else { match = member; } } } } // Return? if (!isExactMatch) { if (errorMessage != "") { semanter->GetContext()->FatalError(errorMessage, referenceNode == NULL ? Token : referenceNode->Token); } if (explicit_arguments == true) { return NULL; } } // No match available? :S if (match == NULL) { return NULL; } // Return matched class. return match; }