inspector-repl / Inspector
Licence: other
A drop-anywhere C++ REPL
Stars: ✭ 767
Programming Languages
cpp17
186 projects
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Inspector - A drop-anywhere C++ REPL
Allows to inject a fully-functional C++17 REPL into running, compiled programs that can access your program state and offers features like code-completion and syntax highlighting.
The API is similar to tools like Pry in Ruby or Pdb in Python:
Example program:
// save as main.cpp
#include <iostream>
#include <string>
int main(int argc, char** argv) {
int a = 1;
std::string b = "hello world";
#include INSPECTOR
std::cout << "second break." << std::endl;
#include INSPECTOR
}
$ ./inspector prebuild main.cpp
$ clang++ $(./inspector print-cflags) main.cpp -o main
$ ./inspector repl
$ ./main
Presentation slides on Inspector
10 min video presentation on Inspector
Build
Requirements
- a c++ compiler (gcc or clang++)
- libcling (see installation instructions below)
- jsoncpp
- python3
- python-prompt-toolkit (for python3)
- python-setuptools (for python3)
- pkg-config
Build Cling
Note that for some linux distributions the cling project also provide pre-build binaries.
git clone http://root.cern.ch/git/llvm.git src
cd src
git checkout cling-patches
cd tools
git clone http://root.cern.ch/git/cling.git
git clone http://root.cern.ch/git/clang.git
cd clang
git checkout cling-patches
cd ../..
mkdir build inst
cd build
cmake -DCMAKE_INSTALL_PREFIX=../inst ..
cmake --build .
cmake --build . --target install
Build Inspector
git clone [email protected]:inspector-repl/inspector.git
cd inspector
mkdir build
cd build
cmake -DCMAKE_PREFIX_PATH="../inst" ..
cmake --build .
Usage
# bring python bindings
# (requires clang 5/trunk for python3 support, the clang branch from cling is new enough)
# and libclang into path
export PYTHONPATH=$(readlink -f <llvm-root>/src/tools/clang/bindings/python/)
export LD_LIBRARY_PATH=$(readlink -f <llvm-repo>/inst/lib)
cd build
./inspector prebuild ../test/test.cpp
gcc -o test-proc $(./inspector print-cflags) ../test/test.cpp
# start repl cli
./inspector repl
# let program connect to repl
./test-proc
TODO
- [ ] buildsystem integration:
- [ ] cmake
- [ ] autotools
- [ ] make
- [ ] meson
- [ ] include type declaration into the repl
- [ ] search for '#include INSPECTOR' before parsing (speed)
- [ ] use verbose mode of compiler to get additional include paths for cling / libclang parsing
- [ ] multiprocessing scanning
- [ ] GDB/LLDB plugin: link/preload libinspector.so and invoke inspector with debug information from gdb/lldb.
- Support for more languages:
- [ ] C
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