Anonymous pairs are not matched because of unavailable variable replacement map

[mkshiblu]

In body mapper, we try to match anonymous classes appearing in a pair of statements based on the texts without the anonymous classes.

The text without anonymous for the following snippet will be let x = "

//v1
let x = function f() { };

//v2
let y = function f() { };

However, when we moved the anonymous matching logic at the top of the findReplacementWithExactMapping, to prevent passing it to SED, we do not do any replacements. Therefore the replacements passed to the argument of identicalAfterVariableAndTypeReplacements is empty.

identicalAfterVariableAndTypeReplacements(statementWithoutAnonymous1, statementWithoutAnonymous2, replacementInfo.getReplacements())

So even though the statements without Anonymus are identical with the replacement of variable x with y, the method does not return true and therefore it does not match the pairs.

[mkshiblu]

Looks like we can explore observations here.

• We can duplicate the code in findReplacementWithExactMatching up to variablesAndMethodInvocation replacement to run on the statement with anonymous
• We can create replacement info with the text of the statement without anonymous.
• We need to decide whether to exclude all or only the current pairs anonymous from the text. Perhaps better we could do a round-based match?
  For example:

let  x = m1(function a1(){}, function a2() {});

Here if we do round system text without anonymous would be

1. Round 1:

let x = m1(, function a2())  // a1 pairs removed

2. Round 2:

let x = m2(function a1(), )  // a2 pairs removed

3. Round 3:

let x = // all anonymous removed