The questions when i try to translate java class to antlr3 grammer file.

The context Link:https://github.com/antlr/antlr4/issues/3652

```
Env: antlr 3.5
Run commond: java -jar antlr-3.5-complete.jar TarsParser.g
```

I have tralated the lexer file successfully.: https://github.com/walkertest/TarsJava/blob/feature/antlrfind/tools/tars-maven-plugin/src/main/resources/antlr/TarsLexer.g

The parser file was almost found back:https://github.com/walkertest/TarsJava/blob/feature/antlrfind/tools/tars-maven-plugin/src/main/resources/antlr/TafParser.g

The remaining questions are:
First:
const_initializer func was different like this.

Second:
The Follow bitset define index was a little differant like this.

Third:
The order of some valiables which defined in func was differant.

Start with the linked issue #3652 and reproduce the reported command, `java -jar antlr-3.5-complete.jar TarsParser.g`. Compare the generated output with `TarsLexer.g` and `TafParser.g`, focusing on `const_initializer`, the Follow bitset indexes, and local variable ordering. Done means explaining whether these differences are expected or identifying a reproducible ANTLR 3.5 generation problem.

Written by the indexing model from the issue text.