GROOVY-10326

Author: eric-milles

base-test/org.eclipse.jdt.groovy.core.tests.compiler/src/org/eclipse/jdt/groovy/core/tests/xform/TypeCheckedTests.java

@@ -4206,4 +4206,26 @@ public void testTypeChecked10325() {
 
         runConformTest(sources, "[foo:baz!]");
     }
+
+    @Test
+    public void testTypeChecked10326() {
+        //@formatter:off
+        String[] sources = {
+            "Main.groovy",
+            "@groovy.transform.TypeChecked\n" +
+            "@SuppressWarnings('rawtypes')\n" +
+            "void test(Map map) {\n" +
+            "  map*.key = null\n" +
+            "}\n",
+        };
+        //@formatter:on
+
+        runNegativeTest(sources,
+            "----------\n" +
+            "1. ERROR in Main.groovy (at line 4)\n" +
+            "\tmap*.key = null\n" +
+            "\t^^^^^^^^" + (isParrotParser() ? "" : "^") + "\n" +
+            "Groovy:[Static type checking] - Cannot set read-only property: key\n" +
+            "----------\n");
+    }
 }

base/org.codehaus.groovy25/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java

@@ -2095,12 +2095,20 @@ private ClassNode getTypeForMapPropertyExpression(ClassNode testClass, ClassNode
         // GRECLIPSE end
         // 0 is the key, 1 is the value
         GenericsType[] types = intf.getGenericsTypes();
+        /* GRECLIPSE edit -- GROOVY-10326
         if (types == null || types.length != 2) return OBJECT_TYPE;
-
+        */
+        if (types == null || types.length != 2) types = new GenericsType[] {
+            OBJECT_TYPE.asGenericsType(), OBJECT_TYPE.asGenericsType()
+        };
+        // GRECLIPSE end
         if (pexp.isSpreadSafe()) {
             // map*.property syntax
             // only "key" and "value" are allowed
             if ("key".equals(pexp.getPropertyAsString())) {
+                // GRECLIPSE add -- GROOVY-10326
+                pexp.putNodeMetaData(StaticTypesMarker.READONLY_PROPERTY, Boolean.TRUE);
+                // GRECLIPSE end
                 ClassNode listKey = LIST_TYPE.getPlainNodeReference();
                 listKey.setGenericsTypes(new GenericsType[]{types[0]});
                 return listKey;

base/org.codehaus.groovy30/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java

@@ -1969,15 +1969,20 @@ private ClassNode getTypeForMapPropertyExpression(final ClassNode testClass, fin
         if (isOrImplements(testClass, MAP_TYPE)) {
             ClassNode mapType = testClass.equals(MAP_TYPE) ? testClass
                     : GenericsUtils.parameterizeType(testClass, MAP_TYPE);
-            GenericsType[] gts = mapType.getGenericsTypes();//<K,V>
-            if (gts == null || gts.length != 2) return OBJECT_TYPE;
+            GenericsType[] gts = mapType.getGenericsTypes();//<K,V> params
+            if (gts == null || gts.length != 2) gts = new GenericsType[] {
+                OBJECT_TYPE.asGenericsType(), OBJECT_TYPE.asGenericsType()
+            };
 
             if (!pexp.isSpreadSafe()) {
                 return getCombinedBoundType(gts[1]);
             } else {
                 // map*.property syntax acts on Entry
                 switch (pexp.getPropertyAsString()) {
                 case "key":
+                    // GRECLIPSE add -- GROOVY-10326
+                    pexp.putNodeMetaData(READONLY_PROPERTY, Boolean.TRUE);
+                    // GRECLIPSE end
                     ClassNode keyList = LIST_TYPE.getPlainNodeReference();
                     keyList.setGenericsTypes(new GenericsType[]{gts[0]});
                     return keyList;

base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java

@@ -1779,15 +1779,18 @@ private ClassNode getTypeForMapPropertyExpression(final ClassNode testClass, fin
         if (isOrImplements(testClass, MAP_TYPE)) {
             ClassNode mapType = testClass.equals(MAP_TYPE) ? testClass
                     : GenericsUtils.parameterizeType(testClass, MAP_TYPE);
-            GenericsType[] gts = mapType.getGenericsTypes();//<K,V>
-            if (gts == null || gts.length != 2) return OBJECT_TYPE;
+            GenericsType[] gts = mapType.getGenericsTypes();//<K,V> params
+            if (gts == null || gts.length != 2) gts = new GenericsType[] {
+                OBJECT_TYPE.asGenericsType(), OBJECT_TYPE.asGenericsType()
+            };
 
             if (!pexp.isSpreadSafe()) {
                 return getCombinedBoundType(gts[1]);
             } else {
                 // map*.property syntax acts on Entry
                 switch (pexp.getPropertyAsString()) {
                 case "key":
+                    pexp.putNodeMetaData(READONLY_PROPERTY,Boolean.TRUE); // GROOVY-10326
                     return makeClassSafe0(LIST_TYPE, gts[0]);
                 case "value":
                     GenericsType v = gts[1];