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Clang-ast-viewer

Introduction

This program allows you to visualize an AST as it is generated by Clang when analyzing some source code.

Clang does a pretty decent work of displaying a static AST in text mode, but the goal of this program is to make it easier to navigate this AST. Currently, it provides three major benefits:

  • When you move the cursor in the source code, the corresponding AST node is highlighted
  • When you select a node in the AST, the corresponding source code is selected, allowing you to better understand the purpose of this node.
  • When you select the node corresponding to a function, you can display the CFG of this function.

Screenshot

Future work

This product is really in its early development stages. Future direction could include:

  • Automatically generating some PCH file to improve parsing time
  • Dynamic update of the AST (instead of clicking refresh)
  • Filtering the AST to remove nodes that come from #included files.
  • Add more information to the nodes (value, type information, resolved symbol for functions...), in the property grid.
  • Simplify the build system (now, some paths have to be changed in the CMakeLists.txt file)

Feel free to help us with the implementation of those, of of other ideas.

Version histoy

  • Increase stability
  • Disable the AST tree when it's no longer in sync with the source code
  • Add CFG display

License

This product is provided under LGPL. See the LICENCE file for more information.