Function parse_argument_names

include/boost/compute/function.hpp:252–289

given a string containing the arguments declaration for a function like: "(int a, const float b)", returns a vector containing the name of each argument (e.g. ["a", "b"]).

// like: "(int a, const float b)", returns a vector containing the name
// of each argument (e.g. ["a", "b"]).
inline std::vector<std::string> parse_argument_names(const char *arguments)
{
    BOOST_ASSERT_MSG(
        arguments[0] == '(' && arguments[std::strlen(arguments)-1] == ')',
        "Arguments should start and end with parentheses"
    );

    std::vector<std::string> args;

    size_t last_space = 0;
    size_t skip_comma = 0;
    for(size_t i = 1; i < std::strlen(arguments) - 2; i++){
        const char c = arguments[i];

        if(c == ' '){
            last_space = i;
        }
        else if(c == ',' && !skip_comma){
            std::string name(
                arguments + last_space + 1, i - last_space - 1
            );
            args.push_back(name);
        }
        else if(c == '<'){
            skip_comma++;
        }
        else if(c == '>'){
            skip_comma--;
        }
    }

    std::string last_argument(
        arguments + last_space + 1, std::strlen(arguments) - last_space - 2
    );
    args.push_back(last_argument);

    return args;
}

struct signature_argument_inserter
{