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review: fix LocalVariableScopeFunction - CtFor, CtTryWithResource, Local class, shadow variables, ... #1154

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merged 5 commits into from
Feb 9, 2017
Merged

review: fix LocalVariableScopeFunction - CtFor, CtTryWithResource, Local class, shadow variables, ... #1154

merged 5 commits into from
Feb 9, 2017

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pvojtechovsky
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See how ParentFunction #1153 is used in fixed LocalVariableScopeFunction.

This PR will be compilable after #1153 is merged.

I will add tests too, but after #1141 is finished, because there will be conflicts in test class.

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This PR improves implementation of LocalVariableScopeFunction. It now correctly handles CtFor, CtTryWithResource. Tests actually fails because of issue #1159. They will pass after this issue is fixed.

I have extracted the tests from QueryTest to VariableReferencesTest, because QueryTest was too complicated and did not covered LocalVariables well. I plan (in another PR) to move remaining stuff from QueryTest to FieldReferenceTest, which needs different structure of test model. And then I will delete QueryTest.

Please have a look at ways how variable declarations are used in AllLocalVars and let me know if I have forgot some case.

@pvojtechovsky pvojtechovsky changed the title WiP: fix LocalVariableScopeFunction - loops, tryWithResource review: fix LocalVariableScopeFunction - CtFor, CtTryWithResource Feb 1, 2017
@pvojtechovsky pvojtechovsky force-pushed the fixLocalVariableScopeFunction branch 3 times, most recently from d3964d2 to 07bf832 Compare February 4, 2017 19:45
@pvojtechovsky pvojtechovsky changed the title review: fix LocalVariableScopeFunction - CtFor, CtTryWithResource WiP: fix LocalVariableScopeFunction - CtFor, CtTryWithResource Feb 6, 2017
@pvojtechovsky pvojtechovsky force-pushed the fixLocalVariableScopeFunction branch 2 times, most recently from 1139a97 to cebeff0 Compare February 6, 2017 21:28
@pvojtechovsky
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Here are more things. I am trying it all together, because it shares tests. It would need addition effort to implement separate tests of these fixes/features

  1. feature SiblingsFunction - visits prev/next/all siblings of input element. Is used to resolve local variable references and declarations
  2. fix of bug: CtLocalVariableReference#getDeclaration is not correct #1170, by new function LocalVariableReferencePossibleDeclarationFunction and its usage in CtLocalVariableReference#getDeclaration ... the name of this function is wild. Do you have better one?
  3. new implementation of LocalVariableReferenceFunction and LocalVariableScopeFunction
  4. much better, readable and extensible tests

This PR is not compilable because it needs #1164

@pvojtechovsky pvojtechovsky changed the title WiP: fix LocalVariableScopeFunction - CtFor, CtTryWithResource review: fix LocalVariableScopeFunction - CtFor, CtTryWithResource, Local class, shadow variables, ... Feb 6, 2017
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Travis is ill?

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I have renamed LocalVariableReferencePossibleDeclarationFunction to VariableReferencePossibleDeclarationFunction, because this function can be used now to search for declarations or conflicts of all CtVariable instances. It is possible to switch off visiting of fields, because they are not needed in algorithm, which looks for conflicts with local variable.

@surli surli mentioned this pull request Feb 7, 2017
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@pvojtechovsky pvojtechovsky mentioned this pull request Feb 7, 2017
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Revapi Analysis results

Old API: fr.inria.gforge.spoon:spoon-core:jar:5.6.0-20170207.133111-28

New API: fr.inria.gforge.spoon:spoon-core:jar:5.6.0-SNAPSHOT

Detected changes: 0.

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What this pull_request-INRIA-spoon-master-docker problem means?

@pvojtechovsky pvojtechovsky mentioned this pull request Feb 7, 2017
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monperrus
monperrus reviewed Feb 8, 2017
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src/main/java/spoon/reflect/visitor/filter/VariableReferencePossibleDeclarationFunction.java Outdated
* }
* </pre>
*/
public class VariableReferencePossibleDeclarationFunction implements CtConsumableFunction<CtElement> {
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rename to PotentialVariableDeclarationFunction?

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Sounds good. Thanks!

monperrus
monperrus reviewed Feb 8, 2017
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src/test/java/spoon/test/query_function/AllLocalVars.java Outdated
import java.util.function.Consumer;

/*
* The values of the fields must be a sequence starting from 1
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What's the purpose of this class? I don't really get it from the name and doc, and the "new AllLocalVars()" alone later seems strange.

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It is the class which is used to build spoon model, which is then used for searching for variable declarations and then back their variable definitions. It belongs to package ...testclass...

new AllLocalVars(), runs all the code of this class and checks that all assertions are correct - that all variable references really refers the expected variable declaration - that test model input is valid.

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OK. Basically, you check the behavior of Java itself.

What about putting it as a real test class itself "JavaBehaviorTest" and annotate all methods with @Test? Together with a good Javadoc/warning, comment it should be maintainable.

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OK. Basically, you check the behavior of Java itself.

I check that all the numbers which are later used in VariableReferencesTest are assigned well, following java behavior.

"JavaBehaviorTest", annotate methods with @test

ok, sounds good.

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monperrus commented Feb 8, 2017 via email

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Revapi Analysis results

Old API: fr.inria.gforge.spoon:spoon-core:jar:5.6.0-20170207.234605-29

New API: fr.inria.gforge.spoon:spoon-core:jar:5.6.0-SNAPSHOT

Detected changes: 0.

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Revapi Analysis results

Old API: fr.inria.gforge.spoon:spoon-core:jar:5.6.0-20170209.143117-32

New API: fr.inria.gforge.spoon:spoon-core:jar:5.6.0-SNAPSHOT

Detected changes: 0.

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ready for merge?

@pvojtechovsky
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yes, I am done with that

@monperrus monperrus merged commit 05592e5 into INRIA:master Feb 9, 2017
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thanks!

@pvojtechovsky pvojtechovsky deleted the fixLocalVariableScopeFunction branch February 11, 2017 12:13
@tdurieux tdurieux mentioned this pull request Mar 15, 2017
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