Review fixes after automatic code analysis

compiler/backend/src/org/jetbrains/kotlin/codegen/ExpressionCodegen.java

@@ -534,6 +534,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
         }
 
         JetExpression loopRange = forExpression.getLoopRange();
+        assert loopRange != null;
         JetType loopRangeType = bindingContext.getType(loopRange);
         assert loopRangeType != null;
         Type asmLoopRangeType = asmType(loopRangeType);
@@ -3531,7 +3532,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
     @Override
     public StackValue visitArrayAccessExpression(@NotNull JetArrayAccessExpression expression, StackValue receiver) {
         JetExpression array = expression.getArrayExpression();
-        JetType type = bindingContext.getType(array);
+        JetType type = array != null ? bindingContext.getType(array) : null;
         Type arrayType = expressionType(array);
         List<JetExpression> indices = expression.getIndexExpressions();
         FunctionDescriptor operationDescriptor = (FunctionDescriptor) bindingContext.get(REFERENCE_TARGET, expression);

compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java

@@ -1266,7 +1266,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
                     result.addField((JetDelegatorByExpressionSpecifier) specifier, propertyDescriptor);
                 }
                 else {
-                    JetType expressionType = bindingContext.getType(expression);
+                    JetType expressionType = expression != null ? bindingContext.getType(expression) : null;
                     Type asmType =
                             expressionType != null ? typeMapper.mapType(expressionType) : typeMapper.mapType(getSuperClass(specifier));
                     result.addField((JetDelegatorByExpressionSpecifier) specifier, asmType, "$delegate_" + n);

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyCodegen.java

@@ -283,6 +283,7 @@ public class PropertyCodegen {
     }
 
     private void generatePropertyDelegateAccess(JetProperty p, PropertyDescriptor propertyDescriptor) {
+        assert p.getDelegateExpression() != null: "Property must have a delegate expression here";
         JetType delegateType = bindingContext.getType(p.getDelegateExpression());
         if (delegateType == null) {
             // If delegate expression is unresolved reference

compiler/backend/src/org/jetbrains/kotlin/codegen/binding/CodegenAnnotatingVisitor.java

@@ -515,6 +515,7 @@ class CodegenAnnotatingVisitor extends JetVisitorVoid {
 
         int fieldNumber = mappings.size();
 
+        assert expression.getSubjectExpression() != null : "subject expression should be not null in a valid when by enums";
         JetType type = bindingContext.getType(expression.getSubjectExpression());
         assert type != null : "should not be null in a valid when by enums";
         ClassDescriptor classDescriptor = (ClassDescriptor) type.getConstructor().getDeclarationDescriptor();

compiler/backend/src/org/jetbrains/kotlin/codegen/when/SwitchCodegen.java

@@ -130,6 +130,7 @@ abstract public class SwitchCodegen {
     }
 
     protected void generateNullCheckIfNeeded() {
+        assert expression.getSubjectExpression() != null : "subject expression can't be null";
         JetType subjectJetType = bindingContext.getType(expression.getSubjectExpression());
 
         assert subjectJetType != null : "subject type can't be null (i.e. void)";