The Java bridge can't always resolve imported VDM-SL types

[peterwvj]

Description

The Java bridge can't always resolve imported VDM-SL types.

Steps to Reproduce

1. Create a file A.vdmsl with the following content:

module G
exports all
definitions
types
T = int;
end G

module A
imports from G all
exports all
definitions
operations
op : () ==> G`T
op () == is not yet specified;
end A

module B
imports from A all
exports all
definitions
operations
op2 : () ==> int
op2 () == A`op();
end B

2. Create a Java implementation of the operation in A:

import org.overture.ast.analysis.AnalysisException;
import org.overture.interpreter.values.Value;
import org.overture.interpreter.values.ValueFactory;

public class A
{
	public static Value op() throws AnalysisException
	{
		return ValueFactory.mkInvariant("G", "T", ValueFactory.mkInt(5));
	}
}

3. Export this Java class as a JAR file, named lib.jar.

4. Execute B`op() in the following way:

java -cp Overture-2.6.0.jar:lib.jar org.overture.interpreter.VDMJ -vdmsl -default B -e 'B`op2()' A.vdmsl

Expected behavior:

Expected the model to terminate gracefully:

λ java -cp Overture-2.6.1-SNAPSHOT.jar:lib.jar org.overture.interpreter.VDMJ -vdmsl -default B -e 'B`op2()' A.vdmsl
Parsed 3 modules in 0.041 secs. No syntax errors
Type checked 3 modules in 0.055 secs. No type errors
Initialized 3 modules in 0.048 secs. 
5
Bye

Actual behavior:

The model crashes, complaining that the type G`T cannot be found:

λ java -cp Overture-2.6.1-SNAPSHOT.jar:lib.jar org.overture.interpreter.VDMJ -vdmsl -default B -e 'B`op2()' A.vdmsl
Parsed 3 modules in 0.047 secs. No syntax errors
Type checked 3 modules in 0.055 secs. No type errors
Initialized 3 modules in 0.047 secs. 
Failed in native method: Definition G`T not found
org.overture.interpreter.runtime.ValueException: Definition G`T not found

Execution: Internal 0059: Failed in native method: Definition G`T not found
org.overture.interpreter.runtime.ValueException: Definition G`T not found

Bye

Reproduces how often:

Every time.

Versions

Overture 2.6.0
OpenJDK Runtime Environment (build 1.8.0_151-8u151-b12-0ubuntu0.17.10.2-b12)
Linux, Ubuntu 17.10

Additional Information

I have a fix for this, I'll submit it as a pull request later for discussion.

[peterwvj]

Was fixed in #677