94 lines
2.4 KiB
Markdown
94 lines
2.4 KiB
Markdown
# python bindings for Egad abstract syntax tree library (xo-expression)
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## Getting Started
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### Build + install `xo-cmake` dependency
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- [github/Rconybea/xo-cmake](https://github.com/Rconybea/xo-cmake)
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Installs a few cmake ingredients, along with a build assistant `xo-build` for XO projects such as this one.
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### Build + install other necessary XO dependencies
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```
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$ xo-build --clone --configure --build --install xo-indentlog
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$ xo-build --clone --configure --build --install xo-refnct
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$ xo-build --clone --configure --build --install xo-subsys
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$ xo-build --clone --configure --build --install xo-reflect
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$ xo-build --clone --configure --build --install xo-expression
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$ xo-build --clone --configure --build --install xo-jit
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$ xo-build --clone --configure --build --install xo-pyutil
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```
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### copy `xo-pyexpression` repository locally
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```
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$ xo-build --clone xo-pyexpression`
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```
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or equivalently
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```
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$ git clone git@github.com:Rconybea/xo-pyexpression.git
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```
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### build + install xo-pyexpression
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```
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$ xo-build --configure --build --install xo-pyexpression
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```
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or equivalently:
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```
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$ PREFIX=/usr/local # or preferred install location
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$ cmake -DCMAKE_INSTALL_PREFIX=$PREFIX -S xo-pyexpression -B xo-pyyexpression/.build
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$ cmake --build xo-pyexpression/.build -j
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$ cmake --install xo-pyexpression/.build
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```
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(also see .github/workflows/main.yml)
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## Examples
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Assumes `xo-pyexpression` installed to `~/local2/lib`,
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i.e. built with `PREFIX=~/local2`.
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```
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PYTHONPATH=~/locasl2/lib:$PYTHONPATH python
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>>> import xo_pyexpression
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>>> dir(xo_pyexpression)
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['Expression', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 'exprtype']
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```
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## Development
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### use from build tree
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Requires that supporting libraries (e.g. `xo_pyreflect`) appear in PYTHONPATH
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```
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$ cd xo-pyexpression/.build/src/pyexpression
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$ python
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>>> import xo_pyexpression
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```
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### build for unit test coverage
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```
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$ cd xo-pyexpression
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$ cmake -DCMAKE_BUILD_TYPE=coverage -DENABLE_TESTING=on -S . -B .build-ccov
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$ cmake --build .build-ccov -j
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```
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### LSP (language server) support
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LSP looks for compile commands in the root of the source tree;
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while Cmake creates them in the root of its build directory.
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```
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$ cd xo-pyexpression
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$ ln -s .build/compile_commands.json # supply compile commands to LSP
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```
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### display cmake variables
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- `-L` list variables
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- `-A` include 'advanced' variables
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- `-H` include help text
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```
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$ cd xo-pyexpression/.build
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$ cmake -LAH
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```
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