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Defining the classes of an AST can be cumbersone due to the high amount of nodes and redundant code. Dynamic classes in JS can make this process much easier.
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A blog about parsing and in-depth explanations of whatever I'm learning at the moment
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The error recovery PoC works, but it's both underperforming and has a big flaw: It doesn't work with repetitions- Published on
Autocompletion has a fatal flaw. If there is a syntax error somewhere before the cursor, the machine will fail and never reach it, even if it has more than enough context to guess the next tokens.
But what if we could define recovery rules? A way for it to reset when it fails and keep going.- Published on
At first glance, rules might seem like a odd and complex mechanism, specially since they allow recursion. But once looked in detail, it's just like any other type of transition, with a few quirks.- Published on
The autocompleter works by traversing the ATN, which is ANTLR4's state machine. To do so, we begin by focusing on the three most common types of transitions: Epsilon, Atomic and Set.