• AST Sample for C++ Source

AST Sample for C++ Source

Create dot output from query and db, and then get a rendered graph in SVG.

  # 
  export PATH=$HOME/local/vmsync/codeql250:"$PATH"

  # Build db
  cd ~/w/codeql-cpp/src/
  codeql database create -j8 -v --language=cpp --command="clang example.cpp" -s . example.db

  # Edit printast.ql in editor to select function

  # Create dot graph 
  cd ~/w/codeql-cpp/queries/
  codeql database analyze                         \
         ~/w/codeql-cpp/src/example.db/           \
         ~/w/codeql-cpp/queries/printast.ql       \
         -j8 -v --ram=16000                       \
         --format=dot                             \
         --output=printast.dot

  # Query produced .dot file
  cd ~/w/codeql-cpp/
  ls queries/printast.dot/cpp/print-ast.dot

  # Query produced .bqrs file
  ls src/example.db/results/ast-queries-cpp/printast.bqrs 

  # Generate SVG
  cd ~/w/codeql-cpp/queries/printast.dot/cpp
  dot -Tsvg < ./print-ast.dot > ./print-ast.svg
  open -a safari ./print-ast.svg