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StreamApiMigration: support Java10 toUnmodifiableList/Set (part of IDEA-187213)

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This commit is contained in:
Tagir Valeev
2018-03-13 11:21:22 +07:00
parent a9711af801
commit b2d5f75a92
8 changed files with 287 additions and 9 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/fuseStreamOperations/afterUnmodifiableJava10.java
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// "Fix all 'Subsequent steps can be fused into Stream API chain' problems in file" "true"
import java.util.*;
import java.util.stream.*;
public class Test {
List<String> testFuse(String[] list) {
return Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toUnmodifiableList());
}
Set<String> testFuse2(String[] list) {
return Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toUnmodifiableSet());
}
}
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/fuseStreamOperations/beforeUnmodifiableJava10.java
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// "Fix all 'Subsequent steps can be fused into Stream API chain' problems in file" "true"
import java.util.*;
import java.util.stream.*;
public class Test {
List<String> testFuse(String[] list) {
List<String> result = Arrays.stream(list).filter(s -> !s.isEmpty()).co<caret>llect(Collectors.toCollection(LinkedList::new));
return Collections.unmodifiableList(result);
}
Set<String> testFuse2(String[] list) {
return Collections.unmodifiableSet(Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toSet()));
}
}
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/java10/afterUnmodifiable.java
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// "Fix all 'Loop can be collapsed with Stream API' problems in file" "true"
import java.util.*;
import java.util.stream.Collectors;
// Java 8 language level used: no toUnmodifiable suggestions
class Test {
List<String> test(String[] list) {
List<String> result = Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toCollection(LinkedList::new));
return Collections.unmodifiableList(result);
}
Collection<String> test2(String[] list) {
Set<String> result = Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toSet());
return Collections.unmodifiableCollection(result);
}
List<String> test3(String[] array) {
List<String> list = Arrays.stream(array).filter(s -> !s.isEmpty()).distinct().collect(Collectors.toList());
return Collections.unmodifiableList(list);
}
Set<String> test4(String[] array) {
Set<String> result = Arrays.stream(array).filter(s -> !s.isEmpty()).collect(Collectors.toCollection(TreeSet::new));
return Collections.unmodifiableSet(result);
}
}
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/java10/afterUnmodifiableJava10.java
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// "Fix all 'Loop can be collapsed with Stream API' problems in file" "true"
import java.util.*;
import java.util.stream.Collectors;
class Test {
List<String> test(String[] list) {
return Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toUnmodifiableList());
}
Collection<String> test2(String[] list) {
return Arrays.stream(list).filter(s -> !s.isEmpty()).collect(Collectors.toUnmodifiableSet());
}
List<String> test3(String[] array) {
return Arrays.stream(array).filter(s -> !s.isEmpty()).distinct().collect(Collectors.toUnmodifiableList());
}
Set<String> test4(String[] array) {
Set<String> result = Arrays.stream(array).filter(s -> !s.isEmpty()).collect(Collectors.toCollection(TreeSet::new));
// toUnmodifiableSet will not preserve order; not suggested here
return Collections.unmodifiableSet(result);
}
}
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/java10/beforeUnmodifiable.java
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// "Fix all 'Loop can be collapsed with Stream API' problems in file" "true"
import java.util.*;
// Java 8 language level used: no toUnmodifiable suggestions
class Test {
List<String> test(String[] list) {
List<String> result = new LinkedList<>();
f<caret>or (int i = 0; i < list.length; i++) {
String s = list[i];
if (!s.isEmpty()) {
result.add(s);
}
}
return Collections.unmodifiableList(result);
}
Collection<String> test2(String[] list) {
Set<String> result = new HashSet<>();
for (int i = 0; i < list.length; i++) {
String s = list[i];
if (!s.isEmpty()) {
result.add(s);
}
}
return Collections.unmodifiableCollection(result);
}
List<String> test3(String[] array) {
Set<String> result = new HashSet<>();
for (int i = 0; i < array.length; i++) {
String s = array[i];
if (!s.isEmpty()) {
result.add(s);
}
}
List<String> list = new ArrayList<>(result);
return Collections.unmodifiableList(list);
}
Set<String> test4(String[] array) {
Set<String> result = new TreeSet<>();
for (int i = 0; i < array.length; i++) {
String s = array[i];
if (!s.isEmpty()) {
result.add(s);
}
}
return Collections.unmodifiableSet(result);
}
}
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/java10/beforeUnmodifiableJava10.java
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// "Fix all 'Loop can be collapsed with Stream API' problems in file" "true"
import java.util.*;
class Test {
List<String> test(String[] list) {
List<String> result = new LinkedList<>();
f<caret>or (int i = 0; i < list.length; i++) {
String s = list[i];
if (!s.isEmpty()) {
result.add(s);
}
}
return Collections.unmodifiableList(result);
}
Collection<String> test2(String[] list) {
Set<String> result = new HashSet<>();
for (int i = 0; i < list.length; i++) {
String s = list[i];
if (!s.isEmpty()) {
result.add(s);
}
}
return Collections.unmodifiableCollection(result);
}
List<String> test3(String[] array) {
Set<String> result = new HashSet<>();
for (int i = 0; i < array.length; i++) {
String s = array[i];
if (!s.isEmpty()) {
result.add(s);
}
}
List<String> list = new ArrayList<>(result);
return Collections.unmodifiableList(list);
}
Set<String> test4(String[] array) {
Set<String> result = new TreeSet<>();
for (int i = 0; i < array.length; i++) {
String s = array[i];
if (!s.isEmpty()) {
result.add(s);
}
}
// toUnmodifiableSet will not preserve order; not suggested here
return Collections.unmodifiableSet(result);
}
}