[cfe-dev] Merging AST from Multiple Translation Units

Alexey Kutumov alexey.kutumov at gmail.com
Tue Jun 16 21:30:15 PDT 2015


I suppose that ASTImporter does not handle all AST nodes (i know that it
cannot import `using` directives, it cannot import templates, also it
cannot import pragmas and so on). I think that it can import only simple
nodes (like structs, classes, functions).

I have branch (based on 3.6)
https://github.com/prograholic/clang/tree/odr-check. In this branch i'm
trying to implement import of all possible nodes. But my branch is highly

2015-06-17 6:41 GMT+06:00 Uri Mann <umann at symantec.com>:

> Hello everyone;
> I'm trying to create a tool which transforms source using a class derived
> from ASTFrontendAction. The tool need to transform one or more source files
> and then produce a final source file which can reference symbols from all
> of the processed source files. I tried to use ASTMergeAction class by
> saving the ASTUnit at the inside my class's EndSourceFileAction(). But when
> the files are merged, ASTImporter emits multiple errors "cannot import
> unsupported AST node xxx". Is this the right way to do it?
> Thanks in advance.
> -Uri
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> cfe-dev at cs.uiuc.edu
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