Hello everybody!
Last week end I found this post (
https://dlang.org/blog/2017/08/01/a-dub-case-study-compiling-dmd-as-a-library/ ) on the Blog and thought to myself awesome.
So I built the library and everything went smooth. Thanks for the
effort of all the involved people who made that possible!
I've had a look at the 2 examples, too, the avg. function lines (
https://github.com/dlang/dmd/blob/master/src/examples/avg.d ) and
the import (
https://github.com/dlang/dmd/blob/master/src/examples/impvisitor.d ) ones and for a start I decided to make a program that prints the outline of a module.
Turns out I don't really understand how to access the data in the
AST.
For everything there's a visitor method and overriding a few of
them to print return statements and some such works as advertised.
However, I have no idea where I am in the tree when any of those
methods are called.
Like for example in
FunctionLengthVisitor(AST).visitFuncBody(AST.FuncDeclaration fd).
I have a function declaration object which tells me everything
about what's inside the function, but how do I know what or where
this function belongs to, where can I get that information ? I
don't see anything about UDAs either, nor the doc comment.
I understand when visitor.getAvgLen is called with the parsed
module, the accept function calls a visitor overload for each
member.
But this sounds to me like I'd have to do a lot of book keeping
in my visitor to keep track of things which are already present
in the AST.
Any insight to this would be much appreciated :)
