ceph/src/boost/libs/spirit/example/x3/rexpr/rexpr_full/test/parse_rexpr_test.cpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2015 Joel de Guzman
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 =============================================================================*/
   7 #include <iostream>
   8 #include <iterator>
   9 #include <algorithm>
  10 #include <sstream>
  11
  12 #include "../rexpr/ast.hpp"
  13 #include "../rexpr/rexpr.hpp"
  14 #include "../rexpr/error_handler.hpp"
  15 #include "../rexpr/config.hpp"
  16 #include "../rexpr/printer.hpp"
  17
  18 #include "testing.hpp"
  19
  20 namespace fs = boost::filesystem;
  21 namespace testing = boost::spirit::x3::testing;
  22
  23 auto parse = [](std::string const& source, fs::path input_path)-> std::string
  24 {
  25     std::stringstream out;
  26
  27     using rexpr::parser::iterator_type;
  28     iterator_type iter(source.begin());
  29     iterator_type const end(source.end());
  30
  31     // Our AST
  32     rexpr::ast::rexpr ast;
  33
  34     // Our error handler
  35     using boost::spirit::x3::with;
  36     using rexpr::parser::error_handler_type;
  37     using rexpr::parser::error_handler_tag;
  38     error_handler_type error_handler(iter, end, out, input_path.string()); // Our error handler
  39
  40     // Our parser
  41     auto const parser =
  42         // we pass our error handler to the parser so we can access
  43         // it later on in our on_error and on_sucess handlers
  44         with<error_handler_tag>(std::ref(error_handler))
  45         [
  46             rexpr::rexpr()
  47         ];
  48
  49     // Go forth and parse!
  50     using boost::spirit::x3::ascii::space;
  51     bool success = phrase_parse(iter, end, parser, space, ast);
  52
  53     if (success)
  54     {
  55         if (iter != end)
  56             error_handler(iter, "Error! Expecting end of input here: ");
  57         else
  58             rexpr::ast::rexpr_printer{out}(ast);
  59     }
  60
  61     return out.str();
  62 };
  63
  64 int num_files_tested = 0;
  65 int num_tests_failed = 0;
  66 auto compare = [](fs::path input_path, fs::path expect_path)
  67 {
  68    if (!testing::compare(input_path, expect_path, parse))
  69        ++num_tests_failed;
  70    ++num_files_tested;
  71 };
  72
  73 int main(int argc, char* argv[])
  74 {
  75     if (argc < 2)
  76     {
  77        std::cout << "usage: " << fs::path(argv[0]).filename() << " path/to/test/files" << std::endl;
  78        return -1;
  79     }
  80
  81     std::cout << "===================================================================================================" << std::endl;
  82     std::cout << "Testing: " << fs::absolute(fs::path(argv[1])) << std::endl;
  83     int r = testing::for_each_file(fs::path(argv[1]), compare);
  84     if (r == 0)
  85         std::cout << num_files_tested << " files tested." << std::endl;
  86     std::cout << "===================================================================================================" << std::endl;
  87     return num_tests_failed;
  88 }