Fixes SecureRandom code generation issue

Signed-off-by: Rakshit Krishnappa Ravi <rakshitkrishnapparavi@gmail.com>

Author: rakshitkr

plugins/de.cognicrypt.codegenerator/src/main/java/de/cognicrypt/codegenerator/generator/CodeGenCrySLRule.java

@@ -27,15 +27,15 @@ public class CodeGenCrySLRule extends CrySLRule {
 	private static final long serialVersionUID = -7488186084564628280L;
 	private List<CrySLMethod> requiredMethods;
 	private List<CodeGenCrySLObject> requiredPars;
-	private CrySLObject requiredRetObj;
+	private CodeGenCrySLObject requiredRetObj;
 
-	public CodeGenCrySLRule(String _className, List<Entry<String, String>> defObjects, List<CrySLForbiddenMethod> _forbiddenMethods, StateMachineGraph _usagePattern, List<ISLConstraint> _constraints, List<CrySLPredicate> _predicates, List<CodeGenCrySLObject> pars, CrySLObject reqRet) {
+	public CodeGenCrySLRule(String _className, List<Entry<String, String>> defObjects, List<CrySLForbiddenMethod> _forbiddenMethods, StateMachineGraph _usagePattern, List<ISLConstraint> _constraints, List<CrySLPredicate> _predicates, List<CodeGenCrySLObject> pars, CodeGenCrySLObject reqRet) {
 		super(_className, defObjects, _forbiddenMethods, _usagePattern, _constraints, _predicates);
 		requiredPars = pars;
 		requiredRetObj = reqRet;
 	}
 
-	public CodeGenCrySLRule(CrySLRule rule, List<CodeGenCrySLObject> pars, CrySLObject reqRet) {
+	public CodeGenCrySLRule(CrySLRule rule, List<CodeGenCrySLObject> pars, CodeGenCrySLObject reqRet) {
 		this(rule.getClassName(), rule.getObjects(), rule.getForbiddenMethods(), rule.getUsagePattern(), rule.getConstraints(), rule.getPredicates(), pars, reqRet);
 	}
 
@@ -58,7 +58,7 @@ public List<CodeGenCrySLObject> getRequiredPars() {
 		return requiredPars;
 	}
 
-	public CrySLObject getRequiredRetObj() {
+	public CodeGenCrySLObject getRequiredRetObj() {
 		return requiredRetObj;
 	}
 

plugins/de.cognicrypt.codegenerator/src/main/java/de/cognicrypt/codegenerator/generator/CrySLBasedCodeGenerator.java

@@ -260,9 +260,10 @@ public boolean generateCodeTemplates(Configuration chosenConfig, String pathToFo
 					}
 					if (toBeEnsuredPred == null) {
 						for (CrySLPredicate reqPred : rule.getPredicates()) {
-							CrySLObject a = ((CodeGenCrySLRule) rule).getRequiredRetObj();
+							CodeGenCrySLObject a = rule.getRequiredRetObj();
 							if (reqPred.getParameters().size() > 0) {
-								boolean baseMatch = Utils.isSubType(((CrySLObject) reqPred.getParameters().get(0)).getJavaType(), a.getJavaType());
+								boolean baseMatch = Utils.isSubType(((CrySLObject) reqPred.getParameters().get(0)).getJavaType(), a.getJavaType()) 
+									&& reqPred.getParameters().get(0).getName().equals(a.getCrySLVariable());
 								if (!baseMatch) {
 									continue;
 								}
@@ -743,7 +744,7 @@ else if (methodName.equals(lastInvokedMethod) && returnValueType.equals(voidStri
 					}
 					// Not the last invoked method and return type is not equal to "void".
 					else if (!methodName.equals(lastInvokedMethod) && !returnValueType.equals(voidString)) {
-						methodInvocation = returnValueType + " = " + instanceName + "." + currentInvokedMethod;
+						methodInvocation = retObjInTemplate.getName() + " = " + instanceName + "." + currentInvokedMethod;
 						generated = true;
 					}
 				}
@@ -1226,7 +1227,7 @@ public GeneratorClass setUpTemplateClass(String pathToTemplateFile) {
 		final ASTVisitor astVisitor = new ASTVisitor(true) {
 
 			GeneratorMethod curMethod = null;
-			CrySLObject retObj = null;
+			CodeGenCrySLObject retObj = null;
 			List<CodeGenCrySLObject> pars = new ArrayList<>();
 			Map<SimpleName, CrySLObject> preCGVars = new HashMap<SimpleName, CrySLObject>();
 			Map<SimpleName, CrySLObject> postCGVars = new HashMap<SimpleName, CrySLObject>();
@@ -1249,7 +1250,7 @@ public boolean visit(MethodInvocation node) {
 						if (efqn.equals(varfqn)) {
 							CrySLObject crySLObject = preCGVars.get(var);
 							if(pars.isEmpty()) {
-								retObj = crySLObject;
+								retObj = new CodeGenCrySLObject(crySLObject, (String) ((StringLiteral) arguments.get(1)).resolveConstantExpressionValue());
 							}
 							pars.add(new CodeGenCrySLObject(crySLObject, (String) ((StringLiteral) arguments.get(1)).resolveConstantExpressionValue()));
 							break;