Exclude unused transitive dependencies

[cesarsotovalero]

Spoon depends direclty on org.eclipse.jdt.core. However, the dependencies org.eclipse.core.resources, org.eclipse.core.runtime, org.eclipse.core.filesystem, and org.eclipse.text are not used by Spoon and can be excluded safely.

These transitive dependencies with compile scope introduce bloat in the Spoon library as we can see in the current dependency tree:

+- org.eclipse.jdt:org.eclipse.jdt.core:jar:3.16.0:compile
|  +- org.eclipse.platform:org.eclipse.core.resources:jar:3.13.500:compile
|  |  +- org.eclipse.platform:org.eclipse.core.expressions:jar:3.6.500:compile
|  |  |  \- (org.eclipse.platform:org.eclipse.core.runtime:jar:3.16.0:compile - omitted for duplicate)
|  |  +- (org.eclipse.platform:org.eclipse.core.filesystem:jar:1.7.500:compile - omitted for duplicate)
|  |  \- (org.eclipse.platform:org.eclipse.core.runtime:jar:3.16.0:compile - omitted for duplicate)
|  +- org.eclipse.platform:org.eclipse.core.runtime:jar:3.16.0:compile
|  |  +- org.eclipse.platform:org.eclipse.osgi:jar:3.15.0:compile
|  |  +- org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile
|  |  +- org.eclipse.platform:org.eclipse.core.jobs:jar:3.10.500:compile
|  |  |  \- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|  |  +- org.eclipse.platform:org.eclipse.equinox.registry:jar:3.8.500:compile
|  |  |  \- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|  |  +- org.eclipse.platform:org.eclipse.equinox.preferences:jar:3.7.500:compile
|  |  |  \- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|  |  +- org.eclipse.platform:org.eclipse.core.contenttype:jar:3.7.400:compile
|  |  |  +- (org.eclipse.platform:org.eclipse.equinox.preferences:jar:3.7.500:compile - omitted for duplicate)
|  |  |  +- (org.eclipse.platform:org.eclipse.equinox.registry:jar:3.8.500:compile - omitted for duplicate)
|  |  |  \- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|  |  \- org.eclipse.platform:org.eclipse.equinox.app:jar:1.4.300:compile
|  |     +- (org.eclipse.platform:org.eclipse.equinox.registry:jar:3.8.500:compile - omitted for duplicate)
|  |     \- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|  +- org.eclipse.platform:org.eclipse.core.filesystem:jar:1.7.500:compile**
|  |  +- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|  |  +- (org.eclipse.platform:org.eclipse.equinox.registry:jar:3.8.500:compile - omitted for duplicate)
|  |  \- (org.eclipse.platform:org.eclipse.osgi:jar:3.15.0:compile - omitted for duplicate)
|  \- org.eclipse.platform:org.eclipse.text:jar:3.9.0:compile
|     +- org.eclipse.platform:org.eclipse.core.commands:jar:3.9.500:compile
|     |  \- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|     +- (org.eclipse.platform:org.eclipse.equinox.common:jar:3.10.500:compile - omitted for duplicate)
|     +- (org.eclipse.platform:org.eclipse.equinox.preferences:jar:3.7.500:compile - omitted for duplicate)
|     \- (org.eclipse.platform:org.eclipse.core.runtime:jar:3.16.0:compile - omitted for duplicate)

The transitive dependency com.infradna.tool:bridge-method-annotation of com.mysema.querydsl:querydsl-core can also be excluded because it is not used.

[monperrus]

Thanks a lot for the proposal. How much does this decrease the size of the with-dependencies jar file? (absolute and relative)

[cesarsotovalero]

The reduction of the Spoon jar-with-dependencies, in terms of size and number of classes, is significant:

jar-with-dependencies	Size (MB)	#Classes
Before	16.2	7425
After	12.7	5593
Reduction (%)	27.6%	24.7%

[nharrand]

LGTM!

[nharrand]

Thanks a lot for the contribution!