GROOVY-10229

Author: eric-milles

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

@@ -6346,4 +6346,33 @@ public void testCompileStatic10197() {
             runConformTest(sources, "1");
         }
     }
+
+    @Test
+    public void testCompileStatic10229() {
+        //@formatter:off
+        String[] sources = {
+            "Main.groovy",
+            "@groovy.transform.CompileStatic\n" +
+            "class C {\n" +
+            "  Map<String,?> a() {\n" +
+            "  }\n" +
+            "  Map<String,List<?>> b() {\n" +
+            "    def c = { ->\n" +
+            "      [\n" +
+            "        a(), a()\n" +
+            "      ]\n" +
+            "    }\n" +
+            "    c()\n" +
+            "    null\n" +
+            "  }\n" +
+            "}\n" +
+            "print new C().b()\n",
+        };
+        //@formatter:on
+
+        runConformTest(sources, "null");
+
+        checkDisassemblyFor("C$_b_closure1.class",
+            "  // Signature: ()Ljava/util/List<Ljava/util/Map<Ljava/lang/String;+Ljava/lang/Object;>;>;\n"); // not L?;
+    }
 }

base/org.codehaus.groovy25/src/org/codehaus/groovy/ast/tools/WideningCategories.java

@@ -266,8 +266,13 @@ private static ClassNode parameterizeLowestUpperBound(final ClassNode lub, final
         }
         GenericsType[] lubgt = new GenericsType[agt.length];
         for (int i = 0; i < agt.length; i++) {
+            /* GRECLIPSE edit -- GROOVY-10229
             ClassNode t1 = agt[i].getType();
             ClassNode t2 = bgt[i].getType();
+            */
+            ClassNode t1 = upperBound(agt[i]);
+            ClassNode t2 = upperBound(bgt[i]);
+            // GRECLIPSE end
             ClassNode basicType;
             /* GRECLIPSE edit -- GROOVY-8111
             if (areEqualWithGenerics(t1, a) && areEqualWithGenerics(t2,b)) {
@@ -279,7 +284,7 @@ private static ClassNode parameterizeLowestUpperBound(final ClassNode lub, final
             } else {
                  basicType = lowestUpperBound(t1, t2);
             }
-            if (t1.equals(t2)) {
+            if (t1.equals(t2)/*GRECLIPSE add*/&& !agt[i].isWildcard()/**/) {
                 lubgt[i] = new GenericsType(basicType);
             } else {
                 lubgt[i] = GenericsUtils.buildWildcardType(basicType);
@@ -290,6 +295,16 @@ private static ClassNode parameterizeLowestUpperBound(final ClassNode lub, final
         return plain;
     }
 
+    // GRECLIPSE add
+    private static ClassNode upperBound(final GenericsType gt) {
+        if (gt.isWildcard()) {
+            ClassNode[] ub = gt.getUpperBounds();
+            return ub != null ? ub[0] : OBJECT_TYPE;
+        }
+        return gt.getType();
+    }
+    // GRECLIPSE end
+
     private static ClassNode findGenericsTypeHolderForClass(ClassNode source, ClassNode type) {
         if (isPrimitiveType(source)) source = getWrapper(source);
         if (source.equals(type)) return source;

base/org.codehaus.groovy30/src/org/codehaus/groovy/ast/tools/WideningCategories.java

@@ -264,16 +264,21 @@ private static ClassNode parameterizeLowestUpperBound(final ClassNode lub, final
         }
         GenericsType[] lubgt = new GenericsType[agt.length];
         for (int i = 0; i < agt.length; i++) {
+            /* GRECLIPSE edit -- GROOVY-10229
             ClassNode t1 = agt[i].getType();
             ClassNode t2 = bgt[i].getType();
+            */
+            ClassNode t1 = upperBound(agt[i]);
+            ClassNode t2 = upperBound(bgt[i]);
+            // GRECLIPSE end
             ClassNode basicType;
             if (areEqualWithGenerics(t1, isPrimitiveType(a)?getWrapper(a):a) && areEqualWithGenerics(t2, isPrimitiveType(b)?getWrapper(b):b)) {
                 // we are facing a self referencing type !
                 basicType = fallback;
             } else {
                  basicType = lowestUpperBound(t1, t2);
             }
-            if (t1.equals(t2)) {
+            if (t1.equals(t2)/*GRECLIPSE add*/&& !agt[i].isWildcard()/**/) {
                 lubgt[i] = new GenericsType(basicType);
             } else {
                 lubgt[i] = GenericsUtils.buildWildcardType(basicType);
@@ -284,6 +289,16 @@ private static ClassNode parameterizeLowestUpperBound(final ClassNode lub, final
         return plain;
     }
 
+    // GRECLIPSE add
+    private static ClassNode upperBound(final GenericsType gt) {
+        if (gt.isWildcard()) {
+            ClassNode[] ub = gt.getUpperBounds();
+            return ub != null ? ub[0] : OBJECT_TYPE;
+        }
+        return gt.getType();
+    }
+    // GRECLIPSE end
+
     private static ClassNode findGenericsTypeHolderForClass(ClassNode source, ClassNode type) {
         if (isPrimitiveType(source)) source = getWrapper(source);
         if (source.equals(type)) return source;

base/org.codehaus.groovy40/.checkstyle

@@ -35,6 +35,7 @@
         <file-match-pattern match-pattern="groovy/ast/expr/RangeExpression.java" include-pattern="false" />
         <file-match-pattern match-pattern="groovy/ast/expr/(Static)?MethodCallExpression.java" include-pattern="false" />
         <file-match-pattern match-pattern="groovy/ast/tools/(Expression|Generics)Utils.java" include-pattern="false" />
+        <file-match-pattern match-pattern="groovy/ast/tools/WideningCategories.java" include-pattern="false" />
         <file-match-pattern match-pattern="groovy/classgen/(Annotation|Enum|VariableScope)Visitor.java" include-pattern="false" />
         <file-match-pattern match-pattern="groovy/classgen/(Extended)?Verifier.java" include-pattern="false" />
         <file-match-pattern match-pattern="groovy/classgen/asm/sc/StaticInvocationWriter.java" include-pattern="false" />