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This is a header-only C++ libary for Simple Regex Language.

Currently under development.

You only need to include the library directory and use C++ 14 standard to compile. The namespace used isspre::.

The library uses C++ 11 features heavily, and usesmake_unique from C++ 14. You could use latest Visual Studio, org++-4.9 or later, orclang++-3.8 or later. The project usescmake as the builing system.

// test.cpp#include<string>#include<iostream>#include<spre/spre.hpp>intmain(){    std::string src ="literally\"something\"";    spre::SRLsrl(src);    std::cout << srl.get_pattern() << std::endl;return0;}

$ tree..|-- test.cpp`-- include`-- spre|-- ast.hpp|-- ...        ...$ g++ -I./include -std=c++14 test.cpp$ ./test(?:something)

MIT.

• TheBuilder is yet to be implemented.
• The error reports are implemented as outputing tostderr.

First of all, it's designed to be a header-only library. Thus everything are written in the header files (.hpp). Ideally users only need to#include <spre/spre.hpp>.

The library is written as a light-weight compiler-like thing, although SRL is a DSL and does not have control flow (as a subset of Regex) thus could not be considered turing-complete. As a result, this library has lexer and parser and code generator. This library has specific lexer instead of usingyacc. The code is written following the tutorials fromllvm and@frozengene.

The structure:

token.hpp|  Vdictionary.hpp         ast.hpp  |                       |    V                       Vlexer.hpp  ---------> parser.hpp --------> generator.hpp(get tokens)  (get (vector of) asts) (get the compiled regex string)|                                             V                                          spre.hpp                                        (`SRL` and `Builder`)