Earlier I wrote about configuring JavaCC in Android Studio / IntelliJ. Since I'm migrating from JavaCC to antlr4, I'll show how to integrate antlr4 to IntellJ.
It's actually less work than configuring JavaCC. All you have to do is to add 2 lines:
plugins {
// ...
id "antlr"
id "antlr"
}
// ...
dependencies {
antlr "org.antlr:antlr4:4.6"
// ...
dependencies {
antlr "org.antlr:antlr4:4.6"
// ...
}
One might ask why switching from one LL(*) parser generator to another LL(*)? There are many reasons, I'll comment on this later. One note: antlr4 is not exactly LL(*), it is ALL(*), where A stands for Adaptive. This difference by itself is a big improvement over JavaCC, where Adaptive part requires careful management by hand.
