throws for all unsuccessful abstraction operaions

alib2cli/src/ast/common/CastHelper.h

@@ -15,13 +15,17 @@ public:
 		bool normalize;
 		std::shared_ptr < abstraction::OperationAbstraction > res = abstraction::Registry::getCastAbstraction ( type, param->getReturnType ( ), normalize );
-		res->attachInput ( param, 0 );
-		res->eval ( );
+		if ( ! res->attachInput ( param, 0 ) )
+			throw exception::CommonException ( "Can't connect param at 0 of cast to " + type + " with result of type " + param->getReturnType ( ) + "." );
+		if ( ! res->eval ( ) )
+			throw exception::CommonException ( "Eval of cast to " + type + " failed." );
 		if ( normalize ) {
 			std::shared_ptr < abstraction::OperationAbstraction > normalized = abstraction::Registry::getNormalizeAbstraction ( res->getReturnType ( ) );
-			normalized->attachInput ( res, 0 );
-			normalized->eval ( );
+			if ( ! normalized->attachInput ( res, 0 ) )
+				throw exception::CommonException ( "Can't connect param at 0 of normalize of cast to " + type + " with result of type " + res->getReturnType ( ) + "." );
+			if ( ! normalized->eval ( ) )
+				throw exception::CommonException ( "Eval of normalize of cast to " + type + " failed." );
 			res = normalized;
 		}

alib2cli/src/ast/statements/ResultFileStatement.h

@@ -14,8 +14,10 @@ public:
 	virtual std::shared_ptr < abstraction::OperationAbstraction > translateAndEval ( const std::shared_ptr < abstraction::OperationAbstraction > & prev, Environment & environment ) const override {
 		std::shared_ptr < abstraction::OperationAbstraction > res = abstraction::Registry::getXmlFileWriterAbstraction ( prev->getReturnType ( ), m_file->eval ( environment ) );
-		res->attachInput ( prev, 0 );
-		res->eval ( );
+		if ( ! res->attachInput ( prev, 0 ) )
+			throw exception::CommonException ( "Can't connect param at 0 of result file statement with result of type " + prev->getReturnType ( ) + "." );
+		if ( ! res->eval ( ) )
+			throw exception::CommonException ( "Eval of result file statement failed." );
 		return res;
 	}

alib2cli/src/ast/statements/ResultPrintStatement.h

@@ -12,8 +12,10 @@ public:
 	virtual std::shared_ptr < abstraction::OperationAbstraction > translateAndEval ( const std::shared_ptr < abstraction::OperationAbstraction > & prev, Environment & ) const override {
 		std::shared_ptr < abstraction::OperationAbstraction > res = abstraction::Registry::getValuePrinterAbstraction ( prev->getReturnType ( ) );
-		res->attachInput ( prev, 0 );
-		res->eval ( );
+		if ( ! res->attachInput ( prev, 0 ) )
+			throw exception::CommonException ( "Can't connect param at 0 of result print statement with result of type " + prev->getReturnType ( ) + "." );
+		if ( ! res->eval ( ) )
+			throw exception::CommonException ( "Eval of result print statement failed." );
 		return res;
 	}

alib2cli/src/ast/statements/SingleStatement.cpp

@@ -53,16 +53,20 @@ std::shared_ptr < abstraction::OperationAbstraction > SingleStatement::translate
 	if ( downcast ) {
 		std::shared_ptr < abstraction::OperationAbstraction > downcaster = abstraction::Registry::getDowncastAbstraction ( algo->getRuntimeReturnType ( ), algo->getReturnType ( ) );
-		downcaster->attachInput ( algo, 0 );
-		downcaster->eval ( );
+		if ( ! downcaster->attachInput ( algo, 0 ) )
+			throw exception::CommonException ( "Can't connect param at 0 of downcast of algorithm " + name + " with result of type " + algo->getReturnType ( ) + "." );
+		if ( ! downcaster->eval ( ) )
+			throw exception::CommonException ( "Eval of downcast of algorithm " + name + " failed." );
 		algo = downcaster;
 	}
 	if ( normalize ) {
 		std::shared_ptr < abstraction::OperationAbstraction > normalized = abstraction::Registry::getNormalizeAbstraction ( algo->getReturnType ( ) );
-		normalized->attachInput ( algo, 0 );
-		normalized->eval ( );
+		if ( ! normalized->attachInput ( algo, 0 ) )
+			throw exception::CommonException ( "Can't connect param at 0 of normalize of algorithm " + name + " with result of type " + algo->getReturnType ( ) + "." );
+		if ( ! normalized->eval ( ) )
+			throw exception::CommonException ( "Eval of normalize of algorithm " + name + " failed." );
 		algo = normalized;
 	}