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annotate DEPENDENCIES/generic/include/boost/spirit/home/qi/nonterminal/simple_trace.hpp @ 133:4acb5d8d80b6 tip

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Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents 2665513ce2d3
children
rev   line source
Chris@16 1 /*=============================================================================
Chris@16 2 Copyright (c) 2001-2011 Joel de Guzman
Chris@16 3 Copyright (c) 2001-2011 Hartmut Kaiser
Chris@16 4
Chris@16 5 Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16 6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16 7 ==============================================================================*/
Chris@16 8 #if !defined(BOOST_SPIRIT_SIMPLE_TRACE_DECEMBER_06_2008_1102AM)
Chris@16 9 #define BOOST_SPIRIT_SIMPLE_TRACE_DECEMBER_06_2008_1102AM
Chris@16 10
Chris@16 11 #if defined(_MSC_VER)
Chris@16 12 #pragma once
Chris@16 13 #endif
Chris@16 14
Chris@16 15 #include <boost/spirit/home/support/unused.hpp>
Chris@16 16 #include <boost/spirit/home/qi/nonterminal/debug_handler_state.hpp>
Chris@16 17 #include <boost/fusion/include/out.hpp>
Chris@16 18 #include <iostream>
Chris@16 19 #include <boost/mpl/if.hpp>
Chris@16 20 #include <boost/mpl/and.hpp>
Chris@16 21 #include <boost/type_traits/is_convertible.hpp>
Chris@16 22 #include <boost/spirit/home/support/attributes.hpp>
Chris@16 23
Chris@16 24 // The stream to use for debug output
Chris@16 25 #if !defined(BOOST_SPIRIT_DEBUG_OUT)
Chris@16 26 #define BOOST_SPIRIT_DEBUG_OUT std::cerr
Chris@16 27 #endif
Chris@16 28
Chris@16 29 // number of tokens to print while debugging
Chris@16 30 #if !defined(BOOST_SPIRIT_DEBUG_PRINT_SOME)
Chris@16 31 #define BOOST_SPIRIT_DEBUG_PRINT_SOME 20
Chris@16 32 #endif
Chris@16 33
Chris@16 34 // number of spaces to indent
Chris@16 35 #if !defined(BOOST_SPIRIT_DEBUG_INDENT)
Chris@16 36 #define BOOST_SPIRIT_DEBUG_INDENT 2
Chris@16 37 #endif
Chris@16 38
Chris@16 39 namespace boost { namespace spirit { namespace qi
Chris@16 40 {
Chris@16 41 namespace detail
Chris@16 42 {
Chris@16 43 template<typename Char>
Chris@16 44 inline void token_printer(std::ostream& o, Char c)
Chris@16 45 {
Chris@16 46 // allow to customize the token printer routine
Chris@16 47 spirit::traits::print_token(o, c);
Chris@16 48 }
Chris@16 49 }
Chris@16 50
Chris@16 51 struct simple_trace
Chris@16 52 {
Chris@16 53 int& get_indent() const
Chris@16 54 {
Chris@16 55 static int indent = 0;
Chris@16 56 return indent;
Chris@16 57 }
Chris@16 58
Chris@16 59 void print_indent(int n) const
Chris@16 60 {
Chris@16 61 n *= BOOST_SPIRIT_DEBUG_INDENT;
Chris@16 62 for (int i = 0; i != n; ++i)
Chris@16 63 BOOST_SPIRIT_DEBUG_OUT << ' ';
Chris@16 64 }
Chris@16 65
Chris@16 66 template <typename Iterator>
Chris@16 67 void print_some(
Chris@16 68 char const* tag
Chris@16 69 , int /*indent*/
Chris@16 70 , Iterator first, Iterator const& last) const
Chris@16 71 {
Chris@16 72 print_indent(get_indent());
Chris@16 73 BOOST_SPIRIT_DEBUG_OUT << '<' << tag << '>';
Chris@16 74 int const n = BOOST_SPIRIT_DEBUG_PRINT_SOME;
Chris@16 75 for (int i = 0; first != last && i != n && *first; ++i, ++first)
Chris@16 76 detail::token_printer(BOOST_SPIRIT_DEBUG_OUT, *first);
Chris@16 77 BOOST_SPIRIT_DEBUG_OUT << "</" << tag << '>' << std::endl;
Chris@16 78
Chris@16 79 // $$$ FIXME convert invalid xml characters (e.g. '<') to valid
Chris@16 80 // character entities. $$$
Chris@16 81 }
Chris@16 82
Chris@16 83 template <typename Iterator, typename Context, typename State>
Chris@16 84 void operator()(
Chris@16 85 Iterator const& first
Chris@16 86 , Iterator const& last
Chris@16 87 , Context const& context
Chris@16 88 , State state
Chris@16 89 , std::string const& rule_name) const
Chris@16 90 {
Chris@16 91 switch (state)
Chris@16 92 {
Chris@16 93 case pre_parse:
Chris@16 94 print_indent(get_indent()++);
Chris@16 95 BOOST_SPIRIT_DEBUG_OUT
Chris@16 96 << '<' << rule_name << '>'
Chris@16 97 << std::endl;
Chris@16 98 print_some("try", get_indent(), first, last);
Chris@16 99 break;
Chris@16 100 case successful_parse:
Chris@16 101 print_some("success", get_indent(), first, last);
Chris@16 102 print_indent(get_indent());
Chris@16 103 BOOST_SPIRIT_DEBUG_OUT
Chris@16 104 << "<attributes>";
Chris@16 105 traits::print_attribute(
Chris@16 106 BOOST_SPIRIT_DEBUG_OUT,
Chris@16 107 context.attributes
Chris@16 108 );
Chris@16 109 BOOST_SPIRIT_DEBUG_OUT
Chris@16 110 << "</attributes>";
Chris@16 111 if (!fusion::empty(context.locals))
Chris@16 112 BOOST_SPIRIT_DEBUG_OUT
Chris@16 113 << "<locals>"
Chris@16 114 << context.locals
Chris@16 115 << "</locals>";
Chris@16 116 BOOST_SPIRIT_DEBUG_OUT << std::endl;
Chris@16 117 print_indent(--get_indent());
Chris@16 118 BOOST_SPIRIT_DEBUG_OUT
Chris@16 119 << "</" << rule_name << '>'
Chris@16 120 << std::endl;
Chris@16 121 break;
Chris@16 122 case failed_parse:
Chris@16 123 print_indent(get_indent());
Chris@16 124 BOOST_SPIRIT_DEBUG_OUT << "<fail/>" << std::endl;
Chris@16 125 print_indent(--get_indent());
Chris@16 126 BOOST_SPIRIT_DEBUG_OUT
Chris@16 127 << "</" << rule_name << '>'
Chris@16 128 << std::endl;
Chris@16 129 break;
Chris@16 130 }
Chris@16 131 }
Chris@16 132 };
Chris@16 133 }}}
Chris@16 134
Chris@16 135 #endif