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A Java to iOS Objective-C translation tool and runtime.

Home Page: http://j2objc.org

License: Apache License 2.0

Makefile 1.06% Java 93.18% Objective-C 3.00% C 1.42% C++ 0.63% Objective-C++ 0.41% Shell 0.04% Python 0.05% Awk 0.01% HTML 0.21%

j2objc's People

Contributors

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j2objc's Issues

ByteTest hangs [moved]

This is Issue 5 moved from a Google Code project.
Added on 2012-09-05T22:54:38.000Z by [email protected].
Please review that bug for more context and additional comments, but update this bug.
Closed (Fixed).

Original labels: Type-Defect, Priority-Medium

Add Mockito support [moved]

This is Issue 17 moved from a Google Code project.
Added on 2012-09-05T23:07:46.000Z by [email protected].
Please review that bug for more context and additional comments, but update this bug.
Closed (Fixed).

Original labels: Type-Task, Priority-Medium, Testability

Labeled break statements translating to goto statements

It appears that labeled break statements are not being translated correctly. The translator is converting java's break label; to objective-c goto label;, but the semantics of each are different. Java's break label jumps to the next statement after label (http://docs.oracle.com/javase/tutorial/java/nutsandbolts/branch.html), whereas goto jumps to the label.

Here's a code sample demonstrating the problem:

public class Breaks {
  public static void main(String[] args) {
    int counter = 0;

    label: {
      while (counter++ < 10) {
        if (counter >= 5) {
          break label;
        }
      }
    }

    System.out.println("Counter: " + counter);
  }
}

Converted into objective-c (snippet):

+ (void)mainWithNSStringArray:(IOSObjectArray *)args {
  int counter = 0;
  label: {
    while (counter++ < 10) {
      if (counter >= 5) {
        goto label;
      }
    }
  }
  [((JavaIoPrintStream *) nil_chk([JavaLangSystem out])) printlnWithNSString:[NSString stringWithFormat:@"Counter: %d", counter]];
}

Outputs
Java: Counter: 5
Objective-c: Counter: 11

I noticed this whilst running code generated by jflex, converted to objective c.

Possible solution: a second label, "label_end", could be generated in objective c after the label's statement, and a break label could be converted to goto label_end? Related code here:

j2objc/translator/src/main/java/com/google/devtools/j2objc/gen/StatementGenerator.java

Line 460 in 5fc4426

// Objective-C doesn't have a labeled break, so use a goto.

Support JUnit test suites [moved]

This is Issue 7 moved from a Google Code project.
Added on 2012-09-05T22:57:18.000Z by [email protected].
Please review that bug for more context and additional comments, but update this bug.
Closed (Fixed).

Original labels: Type-Defect, Priority-Medium, Testability

Add java.util.EventObject [moved]

This is Issue 51 moved from a Google Code project.
Added on 2012-09-27T14:23:16.000Z by [email protected].
Please review that bug for more context and additional comments, but update this bug.
Closed (Verified).

Original labels: Type-Enhancement, Priority-Medium

Guice support [moved]

This is Issue 15 moved from a Google Code project.
Added on 2012-09-05T23:04:14.000Z by [email protected].
Please review that bug for more context and additional comments, but update this bug.

Original labels: Type-Enhancement, Priority-Medium

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