ANTLR - Embedding Java code, evaluate before or after?

Posted by wvd on Stack Overflow See other posts from Stack Overflow or by wvd
Published on 2010-05-01T11:47:23Z Indexed on 2010/05/01 11:57 UTC
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Filed under:

antlr

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java

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dynamic

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parse

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grammar

Hello all,

I'm writing a simple scripting language on top of Java/JVM, where you can also embed Java code using the {} brackets. The problem is, how do I parse this in the grammar? I have two options:

1] Allow everything to be in it, such as: [a-z|a-Z|0-9|_|$], and go on

2] Get an extra java grammar and use that grammar to parse that small code (is it actually possible and efficient?)

Since option 2] is basically a double-check since when evaluating java code it's also being checked. Now my last question is -- is way that can dynamically execute java code also with objects which have been created at runtime?

Thanks,

William van Doorn

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