13
votes
Accepted
Why does Forth's flexibility make a grammar inappropriate for it?
A "normal" word is pretty much just a subroutine.
...but you can write a user-defined defining word, which change how the compiler works. For example, a definition normally starts with a colon (":") ...
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7
votes
Why does Forth's flexibility make a grammar inappropriate for it?
In Forth, you can run code at compile time.
In particular, you can run code that consumes words from the input. For example, you could write a C compiler in Forth, and then call it at compile-time, ...
3
votes
Why does Forth's flexibility make a grammar inappropriate for it?
A typical approach involving use of a BNF style grammar implies creation of some sort of tokenizer → parser → generator chain where grammar will be used by parser to form Abstract Syntax Tree from ...
- 136
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