Hi, in various places on the mailing list and in the docs there is mention of 'syntax extensions' or 'compiled syntax extensions' - some method of extending the syntax of Rust which is compiled into the compiler, rather than using macros. Are there any docs for these? Or is there any code which is a good example to try to follow? (I looked through the libsyntax/ext directory which seems to be the right place, but I couldn't tell what was implementation of the feature and what was an example).
What I am actually looking for is a mechanism a bit like Clang ASTFrontendActions - be able to instrument compilation for tools, rather than to add new syntax. Syntax extensions sound like they might work - is that right? Thanks, Nick
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