xo-alloc/xo-tokenizer/docs/examples.rst

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.. _examples:
.. toctree
:maxdepth: 2
Examples
========
See ``xo-tokenizer/examples/tokenrepl`` for (slighly elaborated) version of code below
.. code-block:: cpp
:linenos:
#include "xo/tokenizer/tokenizer.hpp"
int
main() {
using namespace xo::scm;
using namespace std;
using tokenizer_type = tokenizer<char>;
using span_type = tokenizer_type::span_type;
tokenizer_type tkz;
string input_str;
while (getline(cin, input_str)) {
// we want tokenizer to see newline, it's syntax
input_str.push_back('\n');
span_type input(input_str.begin(), input_str.end());
// input may contain multiple tokens
while (!input.empty()) {
auto [tk, nread] = tkz.scan(input);
if (tk.is_valid()) {
cout << tk;
}
input = input.after_prefix(nread);
}
}
auto tk = tkz.notify_eof();
if (tk.is_valid()) {
cout << tk;
}
}