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84 lines
3.0 KiB
Markdown
84 lines
3.0 KiB
Markdown
# parser
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This is a parser combinator library for C++. As a quick example of use, here
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is a complete program that parses one or more `double`s separated by commas,
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ignoring whitespace:
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```c++
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#include <boost/parser/parser.hpp>
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#include <iostream>
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#include <string>
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namespace bp = boost::parser;
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int main()
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{
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std::cout << "Enter a list of doubles, separated by commas. No pressure. ";
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std::string input;
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std::getline(std::cin, input);
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auto const result = bp::parse(
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input, bp::double_ >> *(',' >> bp::double_), bp::ws);
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if (result) {
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std::cout << "Great! It looks like you entered:\n";
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for (double x : *result) {
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std::cout << x << "\n";
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}
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} else {
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std::cout
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<< "Good job! Please proceed to the recovery annex for cake.\n";
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}
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}
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```
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This library is header-only, and has a default dependency on Boost.Hana. The
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Boost.Hana dependency can be eliminated, and `std::tuple` will be used instead
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of `boost::hana::tuple` throughout the library, if you `#define`
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`BOOST_PARSER_DISABLE_HANA_TUPLE`. To try out the lib without mseeing with
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dependencies, add its `include/` dir as an include path in your build and
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define `BOOST_PARSER_DISABLE_HANA_TUPLE` your build.
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Features:
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- Parsers that parse a variety of things.
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- Combining operations that make complex parsers out of simpler ones.
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- Multiple ways of getting data out of the parse, including via callbacks.
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- Sentinel- and range-friendly.
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- Very Unicode friendliness.
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- Excellent error reporting, via diagnostics like those produced by GCC and Clang.
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- Trace support for debugging your parsers.
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- Clever hacks to make compile time errors easier to deal with. (These are totally optional.)
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This library targets submission to Boost.
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Online docs: https://tzlaine.github.io/parser
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Master status:
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Develop status:
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[](LICENSE_1_0.txt)
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