Fix for issue #286: type inferencing of inner class map constructor args

Author: eric-milles

base/org.eclipse.jdt.groovy.core/src/org/eclipse/jdt/groovy/search/TypeInferencingVisitorWithRequestor.java

@@ -1083,14 +1083,14 @@ public void visitConstructorCallExpression(ConstructorCallExpression node) {
         boolean shouldContinue = handleSimpleExpression(node);
         if (shouldContinue) {
             visitClassReference(node.getType());
-            if (node.getArguments() instanceof TupleExpression
-                    && ((TupleExpression) node.getArguments()).getExpressions().size() == 1) {
-                Expression arg = ((TupleExpression) node.getArguments()).getExpressions().get(0);
-                if (arg instanceof MapExpression) {
-                    // this is a constructor call that is instantiated by a map.
-                    // remember this, so that when visiting the map, we can
-                    // infer field names
-                    enclosingConstructorCall = node;
+            if (node.getArguments() instanceof TupleExpression) {
+                TupleExpression tuple = (TupleExpression) node.getArguments();
+                if (isNotEmpty(tuple.getExpressions())) {
+                    if ((tuple.getExpressions().size() == 1 && tuple.getExpressions().get(0) instanceof MapExpression) ||
+                            tuple.getExpression(tuple.getExpressions().size() - 1) instanceof NamedArgumentListExpression) {
+                        // remember this is a map ctor call, so that field names can be inferred when visiting the map
+                        enclosingConstructorCall = node;
+                    }
                 }
             }
             super.visitConstructorCallExpression(node);
@@ -1671,8 +1671,7 @@ public void visitTupleExpression(TupleExpression node) {
         boolean shouldContinue = handleSimpleExpression(node);
         if (shouldContinue && isNotEmpty(node.getExpressions())) {
             // prevent revisit of statically-compiled chained assignment nodes
-            if (node instanceof ArgumentListExpression ||
-                    node.getExpression(0) instanceof NamedArgumentListExpression) {
+            if (node instanceof ArgumentListExpression || node.getExpression(node.getExpressions().size() - 1) instanceof NamedArgumentListExpression) {
                 super.visitTupleExpression(node);
             }
         }

ide-test/org.codehaus.groovy.eclipse.tests/src/org/codehaus/groovy/eclipse/test/ui/SemanticHighlightingTests.groovy

@@ -742,6 +742,36 @@ final class SemanticHighlightingTests extends GroovyEclipseTestSuite {
             new HighlightedTypedPosition(contents.lastIndexOf('X'), 1, CTOR_CALL))
     }
 
+    @Test
+    void testInnerClassCtorCalls() {
+        String contents = '''\
+            class X {
+              class Y {
+                String foo
+                Integer bar
+              }
+              def baz() {
+                def y = new Y()
+                def why = new Y(foo: '1', bar: 2) // non-static inner class causes an AST variation
+              }
+            }
+            '''.stripIndent()
+
+        assertHighlighting(contents,
+            new HighlightedTypedPosition(contents.indexOf('foo'), 3, FIELD),
+            new HighlightedTypedPosition(contents.indexOf('bar'), 3, FIELD),
+            new HighlightedTypedPosition(contents.indexOf('baz'), 3, METHOD),
+            new HighlightedTypedPosition(contents.indexOf('y ='), 1, VARIABLE),
+            new HighlightedTypedPosition(contents.indexOf('Y()'), 1, CTOR_CALL),
+            new HighlightedTypedPosition(contents.indexOf('why'), 3, VARIABLE),
+            new HighlightedTypedPosition(contents.lastIndexOf('Y'), 1, CTOR_CALL),
+            new HighlightedTypedPosition(contents.lastIndexOf('foo'), 3, FIELD),
+            new HighlightedTypedPosition(contents.lastIndexOf('foo'), 3, MAP_KEY),
+            new HighlightedTypedPosition(contents.lastIndexOf('bar'), 3, FIELD),
+            new HighlightedTypedPosition(contents.lastIndexOf('bar'), 3, MAP_KEY),
+            new HighlightedTypedPosition(contents.lastIndexOf('2'), 1, NUMBER))
+    }
+
     @Test
     void testEnumDefs() {
         String contents = '''\