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README.md

SEXPTRAN

A Fortran 2008 library for reading, manipulating and writing S-expressions.

  • Represents S-expressions as a tree structure
  • Handles comments, quoted strings and escaped characters
  • Compatible with the OCaml Sexplib library
  • Written in modern Fortran style
  • Overloaded functions for concise construction of S-expressions (within Fortran bounds)
  • Conversion functions for logical, integer, allocatable character, singlea and double precision reals, integer and real arrays
  • Accessor function for record names
  • Reference-counted cells prevent memory leaks
  • Self-contained with no dependencies
  • Detailed syntax error reporting

Usage

See test_sexptran.f90 and simplest_example.f90 for two usage examples.

Requirements

A good Fortran compiler and CMake.

Compilation and installation

mkdir build
cd build
cmake ..
make
sudo make install

For gfortran:

cmake .. -DCMAKE_Fortran_COMPILER=/usr/bin/gfotran-7

NOTE: gfortran 6 produces spurious warnings such as:

Warning: Only array FINAL procedures declared for derived type ‘out_channel’ defined at (1), suggest also scalar one [-Wsurprising]

For Intel (tested with ifort 18):

cmake .. -DCMAKE_Fortran_COMPILER=/opt/intel/bin/ifort

For PGI:

cmake .. -DCMAKE_Fortran_COMPILER=/opt/pgi/linux86-64/2017/bin/pgf90

NOTE: SEXPTRAN doesn't work with PGI compiler 17.4. The "select type" construct seems to be broken, the dynamic type of objects is lost.

Limitations

  • Multi-line comments not implemented yet
  • No cycle detection
  • Output to formatted units not supported

License

Placed under the MIT license.

Author

Oğuz Berke Antoine DURAK berke.durak@gmail.com

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Fortran library for reading and writing S-expressions

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