Added field for thrown exceptions to callable info. Added check for illegal state exception

to type resolution for expressions.

Signed-off-by: Saurabh Sinha <sinha108@gmail.com>

Author: Saurabh Sinha

src/main/java/com/ibm/northstar/SymbolTable.java

@@ -3,13 +3,15 @@
 import com.github.javaparser.ParseResult;
 import com.github.javaparser.Problem;
 import com.github.javaparser.ast.CompilationUnit;
+import com.github.javaparser.ast.NodeList;
 import com.github.javaparser.ast.body.*;
 import com.github.javaparser.ast.expr.Expression;
 import com.github.javaparser.ast.expr.FieldAccessExpr;
 import com.github.javaparser.ast.expr.MethodCallExpr;
 import com.github.javaparser.ast.expr.NameExpr;
 import com.github.javaparser.ast.nodeTypes.NodeWithName;
 import com.github.javaparser.ast.stmt.BlockStmt;
+import com.github.javaparser.ast.type.ReferenceType;
 import com.github.javaparser.ast.type.Type;
 import com.github.javaparser.resolution.UnsolvedSymbolException;
 import com.github.javaparser.resolution.types.ResolvedType;
@@ -222,7 +224,6 @@ private static EnumConstant processEnumConstantDeclaration(EnumConstantDeclarati
         return enumConstant;
     }
 
-
     /**
      * Process parameter declarations on callables.
      *
@@ -260,6 +261,13 @@ private static Pair<String, Callable> processCallableDeclaration(CallableDeclara
         // add method or constructor modifiers
         callableNode.setModifiers((List<String>) callableDecl.getModifiers().stream().map(mod -> mod.toString().strip()).collect(Collectors.toList()));
 
+        // add exceptions declared in "throws" clause
+        callableNode.setThrownExceptions(
+            ((NodeList<ReferenceType>)callableDecl.getThrownExceptions())
+            .stream()
+            .map(SymbolTable::resolveType)
+            .collect(Collectors.toList()));
+
         // add the complete declaration string, including modifiers, throws, and
         // parameter names
         callableNode.setDeclaration(callableDecl.getDeclarationAsString(true, true, true).strip());
@@ -427,8 +435,8 @@ private static String resolveExpression(Expression expression) {
             if (resolvedType.isReferenceType() || resolvedType.isUnionType()) {
                 return resolvedType.describe();
             }
-        } catch (UnsolvedSymbolException use) {
-            Log.warn("Could not resolve expression: "+expression+"\n"+use.getMessage());
+        } catch (UnsolvedSymbolException | IllegalStateException exception) {
+            Log.warn("Could not resolve expression: "+expression+"\n"+exception.getMessage());
         }
         return "";
     }

src/main/java/com/ibm/northstar/entities/Callable.java

@@ -9,6 +9,7 @@ public class Callable {
     private String comment;
     private List<String> annotations;
     private List<String> modifiers;
+    private List<String> thrownExceptions;
     private String declaration;
     private List<ParameterInCallable> parameters;
     private String code;