How do I define a compile-time *only* classpath in Gradle?

There has been a lot of discussion regarding this topic, mainly here, but not clear conclusion. You are on the right track: currently the best solution is to declare your own provided configuration, that will included compile-only dependencies and add to to your compile classpath: configurations{ provided } dependencies{ //Add libraries like lombok, findbugs etc … Read more

What are the advantages of just-in-time compilation versus ahead-of-time compilation?

Greater portability: The deliverable (byte-code) stays portable At the same time, more platform-specific: Because the JIT-compilation takes place on the same system that the code runs, it can be very, very fine-tuned for that particular system. If you do ahead-of-time compilation (and still want to ship the same package to everyone), you have to compromise. … Read more

What is the difference between a token and a lexeme?

Using “Compilers Principles, Techniques, & Tools, 2nd Ed.” (WorldCat) by Aho, Lam, Sethi and Ullman, AKA the Purple Dragon Book, Lexeme pg. 111 A lexeme is a sequence of characters in the source program that matches the pattern for a token and is identified by the lexical analyzer as an instance of that token. Token … Read more

How can a compiler compile itself?

The first edition of a compiler can’t be machine-generated from a programming language specific to it; your confusion is understandable. A later version of the compiler with more language features (with source rewritten in the first version of the new language) could be built by the first compiler. That version could then compile the next … Read more

What does a just-in-time (JIT) compiler do?

A JIT compiler runs after the program has started and compiles the code (usually bytecode or some kind of VM instructions) on the fly (or just-in-time, as it’s called) into a form that’s usually faster, typically the host CPU’s native instruction set. A JIT has access to dynamic runtime information whereas a standard compiler doesn’t … Read more

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