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Posted to notifications@groovy.apache.org by armsargis <gi...@git.apache.org> on 2017/05/21 19:38:49 UTC
[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
GitHub user armsargis opened a pull request:
https://github.com/apache/groovy/pull/546
GROOVY-7654: Iterable as List and Iterable.asList() have different semantics
Introduce DefaultGroovyMethods.asType(Iterable, Class) to handle correctly 'asType' to iterables
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/armsargis/groovy GROOVY-7654
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/groovy/pull/546.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #546
----
commit faabd7bd65ef9437add8ce451f84a09066e0b448
Author: Sargis Harutyunyan <sa...@webbfontaine.com>
Date: 2017-05-21T19:35:16Z
GROOVY-7654: Introduce DefaultGroovyMethods.asType(Iterable, Class) to
handle correctly 'asType' to iterables
----
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[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
Posted by blackdrag <gi...@git.apache.org>.
Github user blackdrag commented on a diff in the pull request:
https://github.com/apache/groovy/pull/546#discussion_r117640763
--- Diff: src/test/org/codehaus/groovy/runtime/DefaultGroovyMethodsTest.groovy ---
@@ -236,7 +236,28 @@ public class DefaultGroovyMethodsTest extends GroovyTestCase {
assertEquals(3, list.get(2));
}
+ // GROOVY-7654
+ public void testIterableAsList() {
+ def list = [1, 2, 3]
+ def iterable = new IterableWrapper(delegate: list)
+
+ def iterableAsList = iterable.asList()
+ def iterableAsType = iterable as List
+
+ assertEquals(iterableAsList, iterableAsType)
+ assertEquals(1, iterableAsList[0])
+ assertEquals(1, iterableAsType[0])
+ }
+
private static class MyList extends ArrayList {
public MyList() {}
}
+
+ private static class IterableWrapper implements Iterable {
+ Iterable delegate
+
+ Iterator iterator() {
+ delegate.iterator()
+ }
+ }
}
--- End diff --
I am missing a test
def iterableAsIterable = iterable as Iterable
assert iterable.AsIterable.is(iterable)
def iterableAsIterableWrapper = iterable as IterableWrapper
assert iterable.AsIterable.is(iterable)
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[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
Posted by armsargis <gi...@git.apache.org>.
Github user armsargis commented on a diff in the pull request:
https://github.com/apache/groovy/pull/546#discussion_r117642093
--- Diff: src/test/org/codehaus/groovy/runtime/DefaultGroovyMethodsTest.groovy ---
@@ -236,7 +236,28 @@ public class DefaultGroovyMethodsTest extends GroovyTestCase {
assertEquals(3, list.get(2));
}
+ // GROOVY-7654
+ public void testIterableAsList() {
+ def list = [1, 2, 3]
+ def iterable = new IterableWrapper(delegate: list)
+
+ def iterableAsList = iterable.asList()
+ def iterableAsType = iterable as List
+
+ assertEquals(iterableAsList, iterableAsType)
+ assertEquals(1, iterableAsList[0])
+ assertEquals(1, iterableAsType[0])
+ }
+
private static class MyList extends ArrayList {
public MyList() {}
}
+
+ private static class IterableWrapper implements Iterable {
+ Iterable delegate
+
+ Iterator iterator() {
+ delegate.iterator()
+ }
+ }
}
--- End diff --
Actually, test I got from jira issue and meaning I think is to create concrete implementation of Iterable which is not extending from collection. And for concrete implementation we need return some iterator.
Also I thinking to change code like:
```
public static <T> T asType(Iterable iterable, Class<T> clazz) {
if (Collections.class.isAssignableFrom(clazz)) {
return asType((Collection) toList(iterable), clazz);
}
return asType((Object) toList(iterable), clazz);
}
```
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[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
Posted by armsargis <gi...@git.apache.org>.
Github user armsargis commented on a diff in the pull request:
https://github.com/apache/groovy/pull/546#discussion_r117642241
--- Diff: src/test/org/codehaus/groovy/runtime/DefaultGroovyMethodsTest.groovy ---
@@ -236,7 +236,28 @@ public class DefaultGroovyMethodsTest extends GroovyTestCase {
assertEquals(3, list.get(2));
}
+ // GROOVY-7654
+ public void testIterableAsList() {
+ def list = [1, 2, 3]
+ def iterable = new IterableWrapper(delegate: list)
+
+ def iterableAsList = iterable.asList()
+ def iterableAsType = iterable as List
+
+ assertEquals(iterableAsList, iterableAsType)
+ assertEquals(1, iterableAsList[0])
+ assertEquals(1, iterableAsType[0])
+ }
+
private static class MyList extends ArrayList {
public MyList() {}
}
+
+ private static class IterableWrapper implements Iterable {
+ Iterable delegate
+
+ Iterator iterator() {
+ delegate.iterator()
+ }
+ }
}
--- End diff --
I will add missing test cases
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[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
Posted by blackdrag <gi...@git.apache.org>.
Github user blackdrag commented on a diff in the pull request:
https://github.com/apache/groovy/pull/546#discussion_r117645462
--- Diff: src/test/org/codehaus/groovy/runtime/DefaultGroovyMethodsTest.groovy ---
@@ -236,7 +236,28 @@ public class DefaultGroovyMethodsTest extends GroovyTestCase {
assertEquals(3, list.get(2));
}
+ // GROOVY-7654
+ public void testIterableAsList() {
+ def list = [1, 2, 3]
+ def iterable = new IterableWrapper(delegate: list)
+
+ def iterableAsList = iterable.asList()
+ def iterableAsType = iterable as List
+
+ assertEquals(iterableAsList, iterableAsType)
+ assertEquals(1, iterableAsList[0])
+ assertEquals(1, iterableAsType[0])
+ }
+
private static class MyList extends ArrayList {
public MyList() {}
}
+
+ private static class IterableWrapper implements Iterable {
+ Iterable delegate
+
+ Iterator iterator() {
+ delegate.iterator()
+ }
+ }
}
--- End diff --
interesting choice to use Collection.class.isAssignableFrom(clazz). But sure, why not... +1
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[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
Posted by blackdrag <gi...@git.apache.org>.
Github user blackdrag commented on a diff in the pull request:
https://github.com/apache/groovy/pull/546#discussion_r117645390
--- Diff: src/test/org/codehaus/groovy/runtime/DefaultGroovyMethodsTest.groovy ---
@@ -236,7 +236,28 @@ public class DefaultGroovyMethodsTest extends GroovyTestCase {
assertEquals(3, list.get(2));
}
+ // GROOVY-7654
+ public void testIterableAsList() {
+ def list = [1, 2, 3]
+ def iterable = new IterableWrapper(delegate: list)
+
+ def iterableAsList = iterable.asList()
+ def iterableAsType = iterable as List
+
+ assertEquals(iterableAsList, iterableAsType)
+ assertEquals(1, iterableAsList[0])
+ assertEquals(1, iterableAsType[0])
+ }
+
private static class MyList extends ArrayList {
public MyList() {}
}
+
+ private static class IterableWrapper implements Iterable {
+ Iterable delegate
+
+ Iterator iterator() {
+ delegate.iterator()
+ }
+ }
}
--- End diff --
If the iterable is an instance of Collection, then why isn´t the Collection taking method called directly?
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[GitHub] groovy pull request #546: GROOVY-7654: Iterable as List and Iterable.asList(...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/groovy/pull/546
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