Infinite loop in buildModel

[gchaperon]

Hi!
I am trying to process a file but the library gets stuck when trying to build the model.
The file that I am trying to process is this one

The code I am using is below:

import spoon.FluentLauncher;
import spoon.reflect.CtModel;

public class TestBuildModelStuck {
	public static void main(String[] args) {
		String path = "/path/to/myfile.java";
		CtModel model = new FluentLauncher().inputResource(path).buildModel();

	}
}

Using the debugger I managed to see that buildModel is stuck in an infinite loop here:

spoon/src/main/java/spoon/support/compiler/jdt/JDTTreeBuilderHelper.java

Line 513 in fecec81

while (off >= 0) {

off never goes below zero

The part of my file it gets stuck on is T.Entry<K, V>, found in line 508 of my file.

I am failing to see why this is happening. Is that syntax not allowed or invalid?

[slarse]

Hi @gchaperon,

That's perfectly valid Java. I haven't seen it written like that before, but T.Entry<K, V> erases just fine to Map.Entry, so there's no type problem.

I can also reproduce the bug. The problem is that JDT resolves T as a qualified type reference, but Spoon does not appear to handle the case where that's a type parameter reference. In other words, this is a bug!

[slarse]

Here's a minimal piece of code that reproduces the bug:

Launcher.parseClass("public class Main<T extends java.util.Map<String, String>> { T.Entry<String, String> entry; }");