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Posted to commits@groovy.apache.org by em...@apache.org on 2022/04/16 21:55:54 UTC

[groovy] branch GROOVY_3_0_X updated: GROOVY-10583: do not print generics of type parameter

This is an automated email from the ASF dual-hosted git repository.

emilles pushed a commit to branch GROOVY_3_0_X
in repository https://gitbox.apache.org/repos/asf/groovy.git


The following commit(s) were added to refs/heads/GROOVY_3_0_X by this push:
     new 91e25f7f20 GROOVY-10583: do not print generics of type parameter
91e25f7f20 is described below

commit 91e25f7f2070aa3f0712d070c59d810c871b7477
Author: Eric Milles <er...@thomsonreuters.com>
AuthorDate: Sat Apr 16 16:46:04 2022 -0500

    GROOVY-10583: do not print generics of type parameter
    
    3_0_X backport
---
 .../java/org/codehaus/groovy/ast/GenericsType.java | 65 ++++++++--------------
 .../groovy/tools/stubgenerator/Groovy10583.groovy  | 48 ++++++++++++++++
 2 files changed, 72 insertions(+), 41 deletions(-)

diff --git a/src/main/java/org/codehaus/groovy/ast/GenericsType.java b/src/main/java/org/codehaus/groovy/ast/GenericsType.java
index cd3db14428..ccef754fb4 100644
--- a/src/main/java/org/codehaus/groovy/ast/GenericsType.java
+++ b/src/main/java/org/codehaus/groovy/ast/GenericsType.java
@@ -92,59 +92,42 @@ public class GenericsType extends ASTNode {
         return ret.toString();
     }
 
-    private static String nameOf(final ClassNode theType) {
-        StringBuilder ret = new StringBuilder();
-        if (theType.isArray()) {
-            ret.append(nameOf(theType.getComponentType()));
-            ret.append("[]");
-        } else {
-            ret.append(theType.getName());
+    private static String genericsBounds(final ClassNode theType, final Set<String> visited) {
+        StringBuilder ret = appendName(theType, new StringBuilder());
+        GenericsType[] genericsTypes = theType.getGenericsTypes();
+        if (genericsTypes != null && genericsTypes.length > 0
+                && !theType.isGenericsPlaceHolder()) { // GROOVY-10583
+            ret.append('<');
+            for (int i = 0, n = genericsTypes.length; i < n; i += 1) {
+                if (i != 0) ret.append(", ");
+                GenericsType type = genericsTypes[i];
+                if (type.isPlaceholder() && visited.contains(type.getName())) {
+                    ret.append(type.getName());
+                } else {
+                    ret.append(toString(type, visited));
+                }
+            }
+            ret.append('>');
         }
         return ret.toString();
     }
 
-    private static String genericsBounds(final ClassNode theType, final Set<String> visited) {
-        StringBuilder ret = new StringBuilder();
-
+    private static StringBuilder appendName(final ClassNode theType, final StringBuilder sb) {
         if (theType.isArray()) {
-            ret.append(nameOf(theType));
+            appendName(theType.getComponentType(), sb).append("[]");
         } else if (theType.getOuterClass() != null) {
             String parentClassNodeName = theType.getOuterClass().getName();
             if (Modifier.isStatic(theType.getModifiers()) || theType.isInterface()) {
-                ret.append(parentClassNodeName);
+                sb.append(parentClassNodeName);
             } else {
-                ret.append(genericsBounds(theType.getOuterClass(), new HashSet<>()));
+                sb.append(genericsBounds(theType.getOuterClass(), new HashSet<>()));
             }
-            ret.append('.');
-            ret.append(theType.getName(), parentClassNodeName.length() + 1, theType.getName().length());
+            sb.append('.');
+            sb.append(theType.getName(), parentClassNodeName.length() + 1, theType.getName().length());
         } else {
-            ret.append(theType.getName());
+            sb.append(theType.isGenericsPlaceHolder() ? theType.getUnresolvedName() : theType.getName());
         }
-
-        GenericsType[] genericsTypes = theType.getGenericsTypes();
-        if (genericsTypes == null || genericsTypes.length == 0) {
-            return ret.toString();
-        }
-
-        // TODO: instead of catching Object<T> here stop it from being placed into type in first place
-        if (genericsTypes.length == 1 && genericsTypes[0].isPlaceholder() && theType.getName().equals("java.lang.Object")) {
-            return genericsTypes[0].getName();
-        }
-
-        ret.append('<');
-        for (int i = 0, n = genericsTypes.length; i < n; i += 1) {
-            if (i != 0) ret.append(", ");
-
-            GenericsType type = genericsTypes[i];
-            if (type.isPlaceholder() && visited.contains(type.getName())) {
-                ret.append(type.getName());
-            } else {
-                ret.append(toString(type, visited));
-            }
-        }
-        ret.append('>');
-
-        return ret.toString();
+        return sb;
     }
 
     public String getName() {
diff --git a/src/test/org/codehaus/groovy/tools/stubgenerator/Groovy10583.groovy b/src/test/org/codehaus/groovy/tools/stubgenerator/Groovy10583.groovy
new file mode 100644
index 0000000000..f701a724d6
--- /dev/null
+++ b/src/test/org/codehaus/groovy/tools/stubgenerator/Groovy10583.groovy
@@ -0,0 +1,48 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package org.codehaus.groovy.tools.stubgenerator
+
+final class Groovy10583 extends StringSourcesStubTestCase {
+
+    @Override
+    Map<String, String> provideSources() {
+        [
+            'C.groovy': '''
+                class C {
+                    def <S extends CharSequence, N extends Number> List<N>
+                      m(Collection<? extends S> input, Class<N> outputType = Integer) {
+                    }
+                }
+            ''',
+            'Main.java': '''
+                public class Main {
+                    public static void main(String[] args) {
+                        new C();
+                    }
+                }
+            ''',
+        ]
+    }
+
+    @Override
+    void verifyStubs() {
+        String stub = stubJavaSourceFor('C')
+        assert stub.contains('Collection<? extends S> input') // not S<S extends java.lang.CharSequence>>
+    }
+}