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Java backend generates invalid package name #212

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andreasabel opened this issue Nov 7, 2017 · 2 comments
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Java backend generates invalid package name #212

andreasabel opened this issue Nov 7, 2017 · 2 comments
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@andreasabel
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Java
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2.8.4

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@andreasabel
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If my input is my-grammar.cf, bnfc will create java code with package name my-grammar which is not legal.
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what would be the right name for the package? mygrammar or my_grammar? or just forbid the generation of the java code at all?

@andreasabel andreasabel added this to the 2.9 milestone Nov 4, 2018
@andreasabel andreasabel modified the milestones: 2.9, 2.8.4 Jan 4, 2020
@andreasabel andreasabel self-assigned this Jan 4, 2020
@andreasabel
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Following https://docs.oracle.com/javase/tutorial/java/package/namingpkgs.html it seems that snake_case is the convention.

@andreasabel andreasabel mentioned this issue Jul 26, 2023
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andreasabel added a commit that referenced this issue Jul 26, 2023
@andreasabel
Fix #455: Java/ANTLR: Capital name for Lexer and Parser
b4d755c 
Triggered by `example/C.cf`.

ANTLR/Java does not deal well with a parser name `cParser` because with Java 20 `cParserListerner` becomes an unbound symbol.
The lower case `c` is due to the package name sanitization introduced in:
- #212

So this problem exists since 2.8.4, but many only surfaced with recent Java versions that are more strict with case.

A solution is to use a capitial CamelCase for the prefix of `Parser` and `Lexer`, but keep the snake_case for the package name.
andreasabel added a commit that referenced this issue Jul 26, 2023
@andreasabel
Fix #455: Java/ANTLR: Capital name for Lexer and Parser
dbd24b0 
Triggered by `example/C.cf`.

ANTLR/Java does not deal well with a parser name `cParser` because with Java 20 `cParserListerner` becomes an unbound symbol.
The lower case `c` is due to the package name sanitization introduced in:
- #212

So this problem exists since 2.8.4, but many only surfaced with recent Java versions that are more strict with case.

A solution is to use a capitial CamelCase for the prefix of `Parser` and `Lexer`, but keep the snake_case for the package name.
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